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LIBRARY 


^NSSACfft;^^^ 


1895 


ELEMENTS 


OF 


SURVEYING, 


NAVIGATION; 

WITH  A  DESCRIPTION  OF  THE  INSTRIFMENTS  AND 
THE  NECESSARY  TABLES. 


BY    CHARf.ES    DAVIES,  LL.D. 

AOTUOROF  ARITHMETIC,  ELEMENTARY  ALGEBRA,  ELEMENTARY  GEOMETRY,  PRACTICAL 
GEOMETRY,    ELEMENTS   OF    SURVEYING,    ELEMENTS   OF   DESCRIPTIVB 
GEOMETRY,    SHADES    SHADOWS   AND    PERSPECTIVE,   ANA- 
LYTICAL  GEOMETRY,    DIFFERENTIAL  AND 
INTEGRAL   CALCULUS. 


REVISED    EDITION 


NEW   YORK: 

PUBLISHED   BY   A.   S.   BARNES  &.  CO. 
No.   51    JOHN    STREET. 

1847. 


DAVIES' 

COURSE  OF  MATHEMATICS. 


DAVIES'  FIRST  LESSONS  IN  ARITHMETIC— For  Beginners. 

DAVIES'  ARITHMETIC— Designed  for  the  use  of  Academies  and  Schools. 

KEY  TO  DAVIES'  ARITHMETIC. 

DAVIES'  UNIVERSITY  ARITHMETIC— Embracing  the  Science  of  Num- 
bers and  their  numerous  Applications. 

KEY  TO  DAVIES'  UNIVERSITY  ARITHMETIC. 

DAVIES'  ELEMENTARY  ALGEBRA— Being  an  introduction  to  the  Sci- 
ence, and  forming  a  connecting  luik  between  Arithmetic  and  Algebra. 

KEY  TO  DAVIES'  ELEMENTARY  ALGEBRA. 

DAVIES'  ELEMENTARY  GEOMETRY.— This  work  embraces  the  ele- 
mentaiy  principles  of  Geometiy.  The  reasoning  is  plain  and  concise,  but  at  the 
same  time  strictly  rigorous. 

DAVIES'  ELEMENTS  OF  DRAWING  AND  MENSURATION  —  Ap- 
plied to  the  Mechanic  Arts. 

DAVIES'  BOURDON'S  ALGEBRA— Including  Sturm's  Theorem— Being 
an  abridgment  of  the  Work  of  M.  Bourdon,  with  the  addition  of  practical  examples. 

DAVIES'  LEGENDRE'S  GEOMETRY  and  TRIGONOMETRY— Being 

an  abridgment  of  the  work  of  M.  Legendre,  with  the  addition  of  a  Treatise  on  Men- 
suration OF  Planes  and  Solids,  and  a  Table  of  Logarithms  and  Logarithmic 
Sines. 

DAVIES'  SURVEYING— With  a  description  and  plates  of  the  Theodolite, 
Compass,  Plane-Table.  and  Level;  also,  Maps  of  the  Topographical  Signs 
adopted  by  the  Engineer  Department — an  explanation  of  the  method  of  sui-veying 
the  Public  Lands,  and  an  Elementary  Treatise  on  Navigation. 

DAVIES'  ANALYTICAL  GEOMETRY  —  Embracing  the  Equations  of 
THE  Point  and  Straight  Line — of  the  Conic  Sections — of  the  Line  and  Plane 
IN  Space  ;  also,  the  discussion  of  the  General  Equation  of  the  second  degree,  and 
of  Surfaces  of  the  second  order. 

DAVIES'  DESCRIPTIVE  GEOMETRY— With  its  application  to  Spher- 
ical Projections. 

DAVIES'  SHADOWS  and  LINEAR  PERSPECTIVE. 

DAVIES'  DIFFERENTIAL  and  INTEGRAL  CALCULUS. 


Entered,  according  to  Act  of  Congress,  in  the  year  1835,  by  Charles  Davies,  in  the  Clerk's 
Office  of  the  District  Court  of  the  United  States,  in  and  for  the  Southern  District  of 
New  York. 


28652 


PREFACE 


The  Elements  of  Surveying-,  published  by  the  author  in 
1830,  was  designed  especially  as  a  text-book  for  the  Military 
Academy,  and  in  its  preparation  little  regard  was  had  to  the 
supposed  wants  of  other  Institutions. 

It  was  not  the  aim  of  the  author  to  make  it  so  elementary 
as  to  admit  of  its  introduction  into  academies  and  schools,  and 
he  did  not,  therefore,  anticipate  for  it  an  extensive  circulation. 

It  has  been  received,  however,  with  more  favor  than  was 
anticipated,  and  this  circumstance  has  induced  the  author  to 
re-write  the  entire  work.  In  doing  so,  he  has  endeavored  to 
make  it  both  plain  and  practical. 

It  has  been  the  intention  to  begin  with  the  very  elements 
of  the  subject,  and  to  combine  those  elements  in  the  simplest 
manner,  so  as  to  render  the  higher  branches  of  plane-survey- 
ing comparatively  easy. 

All  the  instruments  needed  for  plotting  have  been  carefully 
described ;  and  the  uses  of  those  required  for  the  measurement 
of  angles  are  fully  explained. 

The  conventional  signs  adopted  by  the  Topographical  Beau- 
reau,  and  which  are  now  used  by  the  United  States  Engineers 
in  all  their  charts  and  maps,  are  given  in  plates  5  and  6. 

Should  these  signs  be  generally  adopted  in  the  country,  it 
would  give  entire  uniformity  to  all  maps  and  delineations  of 
ground,  and  would  establish  a  kind  of  language  by  which 
all  the  peculiarities  of  soil  and  surface  could  be  accurately 
represented. 

An  account  is  also  given  of  the  manner  of  surveying  the 
public  lands;  and  although  the  method  is  simple,  it  has, 
nevertheless,  been  productive  of  great  results,  by  defining, 
with  mathematical  precision,  the  boundaries  of  lands  in  the 
new  States,  and  thus  settling  their  titles  on  an  indisputable 
basis. 


MITI      i    EHPA 


4  PREFACE. 

The  method  was  originated  by  Col.  Jared  Mansfield,  whose 
great  acquirements  in  science  introduced  him  to  the  notice 
of  President  Jefferson,  by  whom  he  was  appointed  surveyor- 
general  of  the  North-Western  Territory. 

May  it  be  permitted  to  one  of  his  pupils,  and  a  graduate  of 
the  Military  Academy,  further  to  add,  that  at  the  organization 
of  the  institution  in  1812,  he  was  appointed  Professor  of  Nat- 
ural and  Experimental  Philosophy.  This  situation  he  filled 
for  sixteen  years,  when  he  withdrew  from  the  academy  to 
spend  the  evening  of  his  life  in  retirement  and  study.  His 
pupils,  who  had  listened  to  his  instructions  with  delight,  who 
honored  his  learning  and  wisdom,  and  had  been  brought  near 
to  him  by  his  kind  and  simple  manners,  have  placed  his  por- 
trait in  the  public  library,  that  the  institution  might  possess 
an  enduring  memorial  of  one  of  its  brightest  ornaments  and 
distinguished  benefactors. 

At  the  solicitation  of  several  distinguished  teachers  here  is 
added,  in  the  present  edition,  an  article  on  Plane  Sailing,  most 
of  which  has  been  taken,  by  permission  of  the  author,  from  an 
excellent  work  on  Trigonometry  and  its  applications  by  Pro- 
^*~^or  Charles  Hackley. 

Hartford, 

March,  1841. 


CONTENTS. 


INTRODUCTION 


CHAPTER  L 

Of  Logarithms, 
Table  of  Logarithms, 



Page. 
9 

Multiplication  by  Logarithms, 
Division  by  Logarithms, 
Arithmetical  Complement, 

14 
15 
16 

CHAPTER  H. 

Geometrical  Definitions, 17 

CHAPTER  in. 

Description  of  Instruments, 21 

Of  the  Dividers, "      .         .22 

Ruler  and  Triangle, 22 

Scale  of  Equal  Parts,        .         .         .         .     • 23 

Diagonal  Scale  of  Equal  Parts, 24 

Scale  of  Chords        :         : 25 

Semicircular  Protractor,    :         .         .         .         . 26 

Sectoral  Scale  of  Equal  Parts, 27 

Gunter's  Scale, 28 

Solution  of  Problems, 29 

CHAPTER  IV. 

Plane  Trigonometry,        ..........  34 

Table  of  Logarithmic  Sines, 37 

Solution  of  Right  Angled  Triangles, .49 


ELEMENTS    OF    SURVEYING 


CHAPTER  L 
Definitions  and  Introductory  Remarks, 


51 


CHAPTER  II. 

Of  the  Measurement  and  Calculation  of  Lines  and  Angles,  ....  53 

To  Measure  a  Horizontal  Line, 54 

Of  the  Theodolite, 55 

Heights  and  Distances,      ....  .....  66 

Of  Measurements  with  the  Tape  or  Chain,  ,         .         .         .         .  74 

Surveying  Cross, 76 


CONTENTS. 


CHAPTER   III 


Of  the  Content  of  Ground, 

Of  Laying  Out  and  Dividing  Land, 


Page. 
79 
89 


CHAPTER  IV. 

Surveying  with  the  Compass, 91 

Of  the  Compass, 92 

Field  Notes 96 

Traverse  Table, 98 

Of  Balancing  the  Work, 100 

Of  the  Double  Meridian  Distances  of  the  Courses, 102 

Of  the  Area, 104 

First  Method  of  Plotting, 107 

Second  Method  of  Plotting, 107 

Method  of  Finding  the  Content  of  Land  by  Means  of  the  Table  of  Natural 

Sines, 120 

Method  of  Surveying  the  Public  Lands,      .         .       • 126 

Variation  of  the  Needle, 127 

Of  the  Plain  Table, .  133 

CHAPTER  V. 

Of  Levelling, 137 

Of  the  Level 140 

Of  the  Level  Staves, 143 

CHAPTER   VI. 

Of  the  Contour  of  Ground, 148 


CHAPTER  VI. 

Of  Surveying  Harbours, .159 

To  fix  the  Principal  Points,       .       # 159 

Manner  of  Using  the  Compass, 163 

Of  the  Circular  Protractor,        .........  165 

First  Method  of  Plotting, 166 

Second  Method  of  Plotting, 167 

Surveying  a  Harbour  for  the  Purpose  of  Determining  the  Depth  of  Water,  &c.,  168 


CHAPTER  VII. 


Of  Navigation, 
Of  Plane  Sailing,     . 
Of  Traverse  Sailing, 
Parallel  Sailing, 
Middle  Latitude  Sailing, 
Mercator's  Sailing,  . 
Mercator's  Chart,    . 


171 
174 
176 
179 
181 
184 
187 


INTRODUCTION. 


CHAPTER   I. 

Of  Logarithms. 

1.  The  nature  and  properties  of  the  logarithms  in  common 
use,  will  be  readily  vuiderstood,  by  considering  attentively  the 
different  powers  of  the  nmiiber  lo.     They  are, 

10''  =  i 
10'  =  10 
10*  =  100 
10^=1000 
10^  =  10000 
10^  =  100000 

&c.  &c. 
It  is  plain,  that  the  indices  or  exponents  0,  l,  2,  3,  4,  5,  &c. 
form  an  arithmetical  series  of  which  the  common  difference  is 
1 ;  and  that  the  numbers  1,  10,  100,  1000,  10000,  1 00000,  &c. 
form  a  geometrical  series  of  which  the  common  ratio  is  10, 
The  number  1 0,  is  called  the  base  of  the  system  of  logarithms ; 
and  the  indices,  0,  1,  2,  3,  4,  5,  &c.,  are  the  logarithms  of  the 
numbers  which  are  produced  by  raising  10  to  the  powers  de- 
noted by  those  indices. 

2.  Let  a  denote  the  base  of  the  system  of  logarithms,  m  any 
exponent,  and  M  the  corresponding  number :  we  shall  then 
have,  a'^=M 

in  which  m  is  the  logarithm  of  M. 

If  we  take  a  second  exponent  n,  and  let  JST  denote  the  cor- 
responding number,  we  shall  have, 

in  which  n  is  the  logarithm  of  JV. 

If  now,  we  multiply  .the  first  of  these  equations  by  the 
second,  member  by  member,  we  have 


8  INTRODUCTION. 

but  since  a  is  the  base  of  the  system,  m+n  is  the  log-arithm 
Mx»N*;  hence, 

The  sum  of  the  loganthms  of  any  two  numbers  is  equal  to  the 
logarithm  of  their  product. 

Therefore,  the  addition  of  logarithms  corresponds  to  the  mul- 
tiplication of  their  numbers, 

3.  If  we  divide  the  equations  by  each  other,  member  by 
member,  we  have, 

but  since  a  is  the  base  of  the  system,  m—n  is  the  logarithm 
of  —     hence : 

jsr 

If  one  number  be  divided  by  another,  the  logarithm  of  the  quo- 
dent  will  be  equal  to  the  logarithm  of  the  dividend  diminished  by 
that  of  the  divisor. 

Therefore,  the  subtraction  of  logarithms  corresponds  to  the  di- 
vision of  their  numbers. 

4.  Let  us  examine  further  the  equations 

10^  =  10 
10«  =  100 

io'=iooo 
&c.      &c. 
It  is  plain  that  the  logarithm  of  1  is  0,  and  that  the  loga- 
rithms of  all  the  numbers  between  1  and  10,  are  greater  than 
0  and  less  than  1.     They  are  generally  expressed  by  decimal 
fractions :  thus, 

log  2=0.301030. 

The  logarithms  of  all  numbers  greater  than   10  and  less 
than  100,  are  greater  than  1  and  less  than  2,  and  are  gen- 
erally expressed  by  1  and  a  decimal  fraction  :  thus, 
log  50  =  1.698970. 

The  logarithms  of  numbers  greater  than  100  and  less  than 
1000,  are  greater  than  2  and  less  than  3,  and  are  generally 
expressed  by  uniting  2  Avith  a  decimal  fraction  ;  thus, 
log  126=2.100371. 

The  part  of  the  logarithm  which  stands  on  the  left  of  the 
decimal  point,  is  called  the  cluiracterislic  of  the  logarithm. 


OF    LOGARITHMS.  9 

The  characteristic  is  always  one  less  than  the  places  of  integer 
figures  in  the  number  whose  logarithm  is  taken. 

Thus,  ill  the  first  case,  for  numbers  between  i  and  10, 
there  is  but  one  place  of  figures,  and  the  characteristic  is  0. 
For  numbers  between  10  and  100,  there  are  two  places  of 
figures,  and  the  characteristic  is  1  ;  and  similarly  for  other 
numbers. 

TABLE    OF    LOGARITHMS. 

5.  A  table  of  logarithms,  is  a  table  in  which  are  written 
the  logarithms  of  all  numbers  between  1  and  some  other  given 
number.  The  logarithms  of  all  numbers  between  l  and 
10,000  are  written  in  the  annexed  table. 

6.  The  first  column  on  the  left  of  each  page  of  the  table, 
IS  the  column  of  numbers,  and  is  designated  by  the  letter  JV; 
the  logarithms  of  these  numbers  are  placed  directly  opposite 
them,  and  on  the  same  horizontal  line. 

To  find,  from  the  table,  the  logarithm  of  any  number. 

7.  If  the  number  is  less  than  100,  look  on  the  first  page  of 
the  table,  along  the  column  of  numbers  under  JV,  until  the 
number  is  found :  the  number  directly  opposite,  in  the  column 
designated  log,  is  the  logarithm  sought.     Thus, 

log  9=0.954243. 

When  the  number  is  greater  than  100,  and  less  than  10,000. 

8.  Since  the  characteristic  of  every  logarithm  is  less  by 
unity  than  the  places  of  integer  figures  in  its  corresponding 
number  (Art.  4),  its  value  is  known  by  a  simple  inspection 
of  the  number  whose  logarithm  is  sought.  Hence,  it  has  not 
been  deemed  necessary  to  write  the  characteristics  in  the  table. 

To  obtain  the  decimal  part  of  the  logarithm,  find,  in  the 
column  of  numbers,  the  first  three  figures  of  the  given  number. 
Then,  pass  across  the  page,  along  a  horizontal  line,  into  the 
columns  marked  0,  1,  2,  3,  4,  5,  &c.,  until  you  come  to  the 
column  which  is  designated  by  the  fourth  figure  of  the  given 
number:  at  this  place  there  are  four  figures  of  the  required 
logarithm.  To  the  four  figures  so  found,  two  figures  taken 
from  the  column  marked  0,  are  to  be  prefixed.  If  the  four 
figures  thus  found,  stand  opposite  to  a  row  of  six  figures  in  the 
column  marked  0,  the  two  figures  from  this  column,  which 
are  to  be  prefixed,  are  the  first  two  on  the  left  hand :  but  if 


10  INTRODUCTION. 

the  four  figures  found  are  opposite  a  line  of  only  four  figures, 
you  are  then  to  ascend  the  column  till  you  come  to  tlie  line 
of  six  figures ;  the  two  figures,  at  the  left  hand,  are  to  be 
prefixed,  and  then  the  decimal  part  of  the  logarithm  is  ob- 
tained ;  to  which  prefix  the  characteristic,  and  you  have  the 
entire  logarithm  sought.     For  example, 

log  1122  =  3.049993 

log  8979===3. 953228 
In  several  of  the  columns,  designated  0,  1,2,  3,  4,  &c.,  small 
dots  are  found.  When  the  logarithm  falls  at  such  places, 
a  cipher  must  be  written  for  each  of  the  dots,  and  the  two 
figures,  from  the  column  0,  which  are  to  be  prefixed,  are  then 
found  in  the  horizontal  line  directly  below. 

Thus,      ....    'log  2188  =  3.340047 
the  two  dots  being  changed  into  two  ciphers,  and  the  34  to 
be  taken  from  the  column  0,  is  found  in  the  horizontal  line 
directly  below. 

The  two  figures  from  the  column  0,  must  also  be  taken  from 
the  horizontal  line  below,  if  any  dots  shall  have  been  passed 
over,  in  passing  along  the  horizontal  line :  thus, 

log  3098  =  3.491081 
the  49  from  the  column  0,  being  taken  from  the  line  310. 

When  the   number  exceeds   10,000,  or  is  expressed  by  Jive  or 
more  figures. 

9.  Consider  all  the  figures,  after  the  fourth  from  the  left 
hand,  as  ciphers.  Find  from  the  table  the  logarithm  of  the 
first  four  figures,  and  to  it  prefix  a  characteristic  less  by  unity 
than  all  the  places  of  figures  in  the  given  number.  Take 
from  the  last  column  on  the  right  of  the  page,  marked  D,  the 
number  on  the  same  horizontal  line  with  the  logarithm,  and 
multiply  this  number  by  the  figures  that  have  been  considered 
as  ciphers  :  then  cut  oflf  from  the  right  hand  as  many  places 
for  decimals  as  there  are  figures  in  the  multiplier,  and  add  the 
product  so  obtained  to  the  first  logarithm,  and  the  sum  will  be 
the  logarithm  sought. 

Let  it  be  required,  for  example,  to  find  the  logarithm  of 
672887. 

log  672800  =  5.827886 
the  characteristic  being  5,  since  there  are  six  places  of  figures. 
The  corresponding  number,  in  the   column  J9  is   65,  which 


OF    LOGARITHMS.  Jl 

being  multiplied  by  87,  the  figures  regarded  as  ciphers,  gives 
for  a  product  5655  ;  then  pointing  off  two  decimal  places,  we 
obtain  56.55  for  the  number  to  be  added. 

Hence        .       .       log  672800  =  5.827880 
Adding         ....  +56.55 

gives  .  log  672887=5.827943. 

In  adding  the  proportional  number,  we  omit  the  decimal 
part ;  but  when  the  decimal  part  exceeds  5  tenths,  as  in  the 
case  above,  its  value  is  nearer  unity  than  0  ;  in  which  case, 
we  augment  by  one,  the  figure  on  the  left  of  the  decimal 
point. 

10.  This  method  of  findmg  the  logarithms  of  numbers 
which  exceed  four  places  of  figures,  does  not  give  the  exact 
logarithm  ;  for,  it  supposes  that  the  logarithms  are  propor- 
tional to  their  corresponding  numbers,  which  is  not  rigorously 
true. 

To  explain  the  reason  of  the  above  method,  let  us  take  the 
logarithm  of  672900,  a  number  greater  than  672800  by  100. 
We  then  have, 

log  672900  =  5.827951 
log  672800  =  5.827886 
Difference  of  numbers  100  6 5  =difrerence  of  loga- 

rithms. 
Then,  100   :   65   ::   87   :   56.55 

In  this  proportion  the  first  term  100  is  the  difference  be- 
tween two  numbers,  one  of  which  is  greater  and  the  other 
less  than  the  given  number;  and  the  second  term  65  is  the 
difference  of  their  logarithms,  or  tabular  difference. 

The  third  term  87  is  the  difference  betAveen  the  given  num- 
ber and  the  less  number  672800;  and  hence  the  fourth  term 
56.55  is  the  difference  of  their  logarithms.  This  difference 
therefore,  added  to  the  logarithm  of  the  less  nimiber,  will  give 
that  of  the  greater,  nearly. 

Had  there  been  three  figures  of  the  given  number  treated 
as  ciphers,  the  first  term  would  have  been  1000  ;  had  there 
been  four,  it  would  have  been  10000,  &c.  Therefore,  the 
reason  of  the  rule,  for  the  use  of  the  column  of  differences,  is 
manifest. 

To  find  the  logarithm  of  a  decimal  number. 

11.  If  the   given  number  is  composed  of  a  Avhole  number 


GMT       U^^^'"-^ 


12  iNtnODUCTIOW. 

and  a  decimal,  such  as  36.78,  it  may  be  put  under  the  form 
»_e_7_8.  But  since  a  fraction  is  equal  to  the  quotient  obtained 
by  dividing  the  numerator  by  the  denominator,  its  logarithm 
will  be  equal  to  the  logarithm  of  the  numerator  minus  the 
logarithm  of  the  denominator.     Therefore, 

log  3_6_7_«3=log  3678  — log  100  =  3.565612  —  2  =  1.565612 
from  which  we  see,  that  a  mixed  number  may  be  treated 
as  though  it  were  entire,  except  in  fixing  the  value  of  the 
characteristic,  which  is  always  one  less  than  the  number  of  the 
integer  figures. 

12.  The  logarithm  of  a  decimal  fraction  is  also  readily 
found.     For, 

log  0.8=log  j\=\og  8  — l  =  -l+log  8.     But, 
log  8=0.903090 
which  is  positive  and  less  than  1.     Therefore, 

log  0.8  =  -l+0. 903090  =  — 1.903090 
in  which,  however,  the  minus  sign  belongs  only  to  the  charade^ 
ristic.     Hence  it  appears,  that  the  logarithm  of  tenths  is  the 
same  as  the  logarithm  of  the  corresponding  whole  number, 
excepting,  that  the  characteristic  instead  of  being  0,  is— 1. 

If  the  fraction  were  of  the  form  0.06  it  might  be  written  yVo  J 
taking  the  logarithms,  we  have, 

log  -0/-=log  06— 2  =  -2+log  06  =  — 2.778151 
in  which  the  minus  sign,  as  before,  belongs  only  to  the  char- 
acteristic. If  the  decimal  were  0.006  its  logarithm  would  be 
the  same  as  before,  excepting  the  characteristic,  which  would 
be  —  3.  It  is,  indeed,  evident,  that  the  negative  characteristic 
will  always  be  one  greater  than  the  number  of  ciphers  be- 
tween the  decimal  point  and  the  first  significant  figure. 
Therefore,  the  logarithm  of  a  decimal  fraction  is  found,  by 
considering  it  as  a  whole  number,  and  then  prefixing  to  the  deci- 
mal part  of  its  logarithm  a  negative  characteristic  greater  by 
unity  than  the  number  of  ciphers  between  the  decimal  point  ana 
Ihe  first  significant  figure. 

That  we  may  not,  for  a  moment,  suppose  the  negative  sign 
to  belong  to  the  whole  logarithm,  when  in  fact  it  belongs  only 
to  the  characteristic,  we  place  the  sign  above  the  characte- 
ristic,  thus, 

log  0  8=1.903090,  and  log  0.00=2.778151. 


OP 

LOGARITHMS. 

EXAMPLES 

• 

log  2756       . 

is 

.       3.440270 

log  3270 

is 

.       3.514548 

log  287.965 

is 

.       2.459340 

log  1.004      . 

is 

.       0.001734 

log  0.002      . 

is 

.       3.301030 

log  0.000678 

is 

.       4.831230 

13 


To  find  in  the  table,  the  number  answering  to  a  given  logarithm. 

13.  Search  in  the  columns  of  logarithms  for  the  decimal 
part  of  the  given  logarithm,  and  if  it  can  be  exactly  found, 
set  down  the  corresponding  number.  Then,  if  the  character- 
istic of  the  given  logarithm  is  positive,  point  off  from  the  left 
of  the  number  found,  one  more  place  for  whole  numbers  than 
there  are  units  in  the  characteristic  of  the  given  logarithm, 
and  treat  the  figures  to  the  right  as  decimals. 

If  the  characteristic  of  the  given  logarithm  is  0,  there  will 
be  one  place  of  whole  numbers  ;  if  it  is  — 1,  the  number  will 
be  entirely  decimal;  if  it  is— 2,  there  will  be  one  cipher 
between  the  decimal  point  and  the  first  significant  figure  ; 
if  it  is  —  3,  there  will  be  two,  &c 

The  number  whose  logarithm  is  1.492481,  is  found  at  page 
5,  and  is  31.08. 

But  when  the  decimal  part  of  the  logarithm  cannot  be 
exactly  found  in  the  table,  take  the  number  answering  to  the 
nearest  less  logarithm;  take  also  from  the  table  the  corres- 
ponding difference  in  the  column  D,  Then,  subtract  this 
less  logarithm  from  the  given  logarithm,  and  having  annexed 
any  number  of  ciphers  to  the  remainder,  divide  it  by  the  dif- 
ference taken  from  the  column  2?,  and  annex  the  quotient  to 
the  number  answering  to  the  less  logarithm  :  this  gives  the 
required  number,  nearly.  This  rule,  like  that  for  finding 
the  logarithm  of  a  number  when  the  places  of  figures  ex- 
ceed four,  supposes  the  numbers  to  be  proportional  to  their 
corresponding  logarithms. 

1.  Find  the  number  answering  to  the  logarithm  1.532708. 
Given  logarithm  is         .         .  1.532708 

Next  less  tabular  logarithm  is  1.532627 

Their  difference  is  .  .  81 


14  INTRODUCTION. 

The  number  corresponding  to  the  tabular  logarithm  is  34.09 
And  the  tabular  difference  is         .         •         .         .         128  : 

and,  128)81.00(63 

The  63  being   annexed  to  the  tabular  number  34.09  gives 

34.0963  for  the  number  answering  to  the  logarithm  1.532708. 

2.  Required  the  number  answering  to  the  logarithm 
3.233568. 

The  given  logarithm  is  .  .         3.233568 

Next  less  tabular  logarithm  of  1712  is      3.233504 
Their  difference  is         ...         .  64 

Tabular  difference         .      253)64.00(25 
Hence  the  number  sought,  is  1712.25,  marking  four  places 
for  integers  since  the  characteristic  is  3. 

MULTIPLICATION  BY  LOGARITHMS. 

14.  When  it  is  required  to  multiply  numbers  by  means  of 
their  logarithms,  we  first  find  from  the  table  the  logarithms 
of  the  numbers  to  be  multiplied ;  we  next  add  these  loga- 
rithms together,  and  their  sum  is  the  logarithm  of  the  pro- 
duct of  the  numbers  (Art.  2). 

The  term  sum  is  to  be  understood  in  its  algebraic  sense ; 
therefore,  if  any  of  the  logarithms  have  negative  charac- 
teristics, the  difference  between  their  sum  and  that  of  the 
positive  characteristics,  is  to  be  taken,  and  the  sign  of  the 
greater  prefixed. 

EXAMPLES. 

1.  Multiply  23.14  by  5.062. 

log   23.14  =  1.364363 
log   5.062=0.704322. 
Product  117.1347    .    .   .    .    2.068685 

2.  Multiply  3.902,   597.16  and  0.0314728  together. 

log  3.902  =  0.591287 

log  597.16=2.776091 

log  0.0314728  =  2.497936 

Product  73.3354   ....      1.865314 

Here  the  2  cancels  the +  2,  and  the  1  carried  from  the 
decimal  part  is  set  down. 


OF    LOGARITHMS.  15 

3.  Multiply  3.586,  S.1046,  0.8372,  and  0.029  4,  together. 

log      3.586=0.554610 
log   2.1046  =  0.323170 
log   0.8372  =  1.922829 
log   0.0294  =  2.468347 
Product      0.1857615      .      .       1.268956. 
In  this  example  the  2,  carried  from  the  decimal  part,  can- 
cels 2,  and  there  remains  T  to  be  set  down. 

DIVISION  OF  NUMBERS  BY  LOGARITHMS. 

15.  When  it  is  required  to  divide  numbers  by  means  of 
their  logarithms,  we  have  only  to  recollect,  that  the  subtrac- 
tion of  logarithms  corresponds  to  the  division  of  their  num- 
bers (Art.  3).  Hence,  if  we  find  the  logarithm  of  the  divi- 
dend, and  from  it  subtract  the  logarithm  of  the  divisor,  the 
remainder  will  be  the  logarithm  of  the  quotient. 

This  additional  caution  may  be  added.  The  difference  of 
the  logarithms,  as  here  used,  means  the  algebraic  difference ; 
so  that,  if  the  logarithm  of  the  divisor  have  a  negative 
characteristic  its  sign  must  be  changed  to  positive,  after 
diminishing  it  by  the  unit,  if  any,  carried  in  the  subtraction 
from  the  decimal  part  of  the  logarithm.  Or,  if  the  charac- 
teristic of  the  logarithm  of  the  dividend  is  negative,  it  must 
be  treated  as  a  negative  number. 

EXAMPLES. 

1.  To  divide  24163  by  4567. 

log   24163=4.383151 

log      4567  =  3.659631 

Quotient      5.29078  .  .  0.723520. 

2.  To  divide  .0631*4  by  .007241 

log      0.06314=2.800305 
log   0.007241=3.859799 
Quotient   .        .        8.7198      .         .         0.940506 
Here,  1  carried  from  the  decimal  part  to  the  3  changes  it  to 
2,  which  being  taken  from  §,  leaves  0  for  the  characteristic. 

3.  To  divide  37.149  by  523.76 

log  37.149  =  1.569947 

log  523.76=2.719133 

Quotient      .       0.07092T4        .       2.8508l~4 


I(?  INTRODUCTION. 

4.  To  divide  0.7438  by  12.9476 

log     0  7438  =  1.871456 

log  12.9476  =  1.112189 
Quotient  0.057447  .  .  2.759267 
Here,  the  l  taken  from  f,  gives  2  for  a  result,  as  set  down. 

ARITHMETICAL    COMPLEMENT. 

16.  The  Arithmetical  complement  of  a  logarithm  is  the  num- 
ber which  remains  after  subtracting  this  logarithm  from  10. 
Thus  .  .  10—9.274687  =  0.725313. 

Hence,  0.725313  is  the  arithmetical  complement 

of  9.274687. 

17  We  will  now  show  that,  the  difference  between  two  logo- 
rithms  is  truly  found,  by  adding  to  the  first  logarithm  tfie  arith- 
metkal  complement  of  the  logarithm  to  be  subtracted^  and  then 
diminishing  the  sum  by  10. 

Let    a=the  first  logarithm 

b=the  logarithm  to  be  subtracted 
and  c  =  io  — 6=the  arithmetical  complement  of  b, 

P^ow  the  difference  between  the  two  logarithms  will  be 
expressed  by    a—b. 

But,  from  the  equation  c  =  lO  —  b,  we  have 
c~10  =  — 6 
hence,  if  we  place  for— 6  its  value,  we  shall  have 

a— b=a-\-c— 10 
which  agrees  with  the  enunciation. 

When  we  wish  the  arithmetical  complement  of  a  logarithm, 
we  may  write  it  directly  from  the  table,  by  subtracting  the  left 
hand  figure  from  9,  then  proceeding  to  the  rights  subtract  each 
figure  from  9  till  we  reach  the  last  significant  figure,  which  must 
be  taken  from  10  :  this  will  be  the  same  as  taking  the  logarithm 
from  10. 

EXAMPLES. 

I.  From  3.274107    take    2.104729. 
By  common  method.  By  arith.  comp, 

3.274107  3.274107 

2.104729         its  ar.  comp.  7.895271 

Diff.      1.169378  Sum  1.169378  after 

subtracting  10« 


DEFIMTlONb. 


17 


Hence,  to   perform  division   by   means   of  the   arithmetical 
complement  we  have  the  follov^ring 


RULE. 


To  the  logarithm  of  the  dividend  add  the  arithmetical  comple- 
ment of  the  logarithm  of  the  divisor:  the  sum,  after  subtracting 
10,  will  be  the  logarithm  of  the  quotient 


EXAMPLES. 


1.  Divide  327.5  by  22.07. 
log   327.5 
log  22.07     ar.  comp. 

Quotient     .     .     14.839     .     . 


2.515211 
8.656198 

1.171409 


1.871456 

8.887811 

2.759267 


2.  Divide   0.7438  by  12.9476. 

log  0.7438 

log  12.9476      ar.  comp. 

Quotient     .     .     0.057447      .      . 

In    this    example,    the    sum    of    the    characteristics    is    8, 
from  which,  taking  lo,  the  remainder  is  2. 

3.  Divide  37.149  by  523.76. 

log  37.149  .  .  1.569947 

log  523.76        ar.  comp.  7.2808G7 

Quotient      .      .      0.0709273         .      .      .      2.850814 


CHAPTER  H. 

Definitions. 

1.  Geometry  is  the  science  which  has  for  its  object  the 
measurement  of  extension. 

Extension  has  three  dimensions,  length,  breadth,  height, 
or  thickness. 

2.  A  line  is  length  without  breadth,  or  thickness. 

The  extremities  of  a  line  are  called  points :  a  point,  there- 
fore, has  neither  length,  breadth,  nor  thickness,  but  position 
oiily. 

2 


18 


INTRODUCTION. 


3.  A  straight  line  is  the  shortest  distance  from  one  point  to 
another. 

4.  Every  line  which  is  not  straight,  or  composed  of  straight 
lines,  is  a  curved  line. 

Thus,  AB  is  a  straight  line ;  ACDB  is 
a  broken  line,  or  one  composed  of  straight    A. 
lines ;  and  AEB  is  a  curved  line. 

The  Avord  line,  when  used  alone,  will  designate  a  straight 
line  ;  and  the  word  curve,  a  curved  line. 

5.  A  surface  is  that  which  has  length  and  breadth,  without 
height  or  thickness. 

6.  A  plane  is  a  surface,  in  which,  if  two  points  be  assumed 
at  pleasure,  and  connected  by  a  straight  line,  that  line  will  lie 
wholly  in  the  surface. 

7.  Every  surface,  which  is  not  a  plane  surface,  or  composed 
of  plane  surfaces,  is  a  curved  surface. 

8.  A  solid  or  body  is  that  which  has  length,  breadth,  and 
thickness;  and  therefore  combines  the  three  dimensions  of 
extension. 

9.  When  two  straight  hnes,  AB,AC, 
meet  each  other,  their  inclination  or  open- 
ing is  called  an  angle,  which  is  greater  or 
less  as  the  lines  are  more  or  less  inclined 
or  opened.  The  point  of  intersection  A  is 
the  vertex  of  the  angle,  and  the  lines  AB, 
AC,  are  its  sides. 

The  angle  is  sometimes  designed  simply  by  the  letter  at 
the  vertex  A;  sometimes  by  the  three  letters  BAG,  or  CAB, 
the  letter  at  the  vertex  being  always  placed  in  the  middle. 

Angles,  like  all  other  quantities,  are  susceptible  of  addition, 
subtraction,  multiplication,  and  division. 

Thus  tlie  angle  DCE  is  the  sum 
of  the  two  angles  DCB,  BCE  ;  and 
the  angle  DCB  is  the  difference  of  the     a 
two  angles  DCE,  BCE. 


DEFINITIONS. 


n 


-!• 


10  When  a  straight  line  AB  meets 
another  straight  line  CD,  so  as  to  make 
the  adjacent  angles  BAG,  BAD,  equal  to 
each  other,  each  of  these  angles  is  called  a 
right  angle;  and  the  line  AB  is  said  to  be 
perpendicular  to  CD. 

11.  Every  angle  BAC,  less  than 
a  right  angle,  is  an  acute  angle;  and 
every  angle  DEF,  greater  than  a 
right  angle,  is  an  obtuse  angle. 

12.  Two   lines   are  said   to    be  parallel, 
when  being  situated  in  the  same  plane,  they 
cannot  meet,  how  far  soever,  either   way,     — 
both  of  them  be  produced 

13.  A  plane  figure  is  a  plane  terminated  on 
all  sides  by  lines,  either  straight  or  curved. 

If  the  lines  are  straight,  the  space  they  en- 
close is  called  a  rectilineal  figure,  or  polygon,  and 
the  lines  themselves,  taken  together,  form  the 
contour,  or  perimeter  of  the  polygon. 

14.  The  polygon  of  three  sides,  the  simplest  of  all,  is  called 
a  triangle;  that  of  four  sides,  a  quadrilateral ;  that  of  five, 
n pentagon ;  that  of  six,  a  hexagon ;  that  of  seven,  a  heptagon; 
that  of  eight,  an  octagon;  that  of  nine  a  nonagon ;  that  of 
ten,  a  decagon ;  that  of  twelve,  a  dodecagon. 


15.  An  equilateral  triangle  is  one  which  has  its  three  sides 
equal ;  an  isosceles  triangle,  one  which  has  two  of  its  sides 
equal;  a  scalene  triangle,  one  which  has  its  three  sides  unequal. 

16.  A  right-angled  triangle  is  one  which 
has  a  right  angle.  The  side  opposite  the 
right  angle  is  called  the  hypothenuse.  Thus, 
in  the  triangle  ABC,  right-angled  at  A, 
the  side  BC  is  the  hypothenuse. 


20  INTRODUCTION. 

17.   Among  the  quadrilaterals,  we  distinguish  : 

The    square,  which    has   its  sides  equal,  and 
its  angles  right  angles. 

The  rectangle,  which  has  its  angles  right 
angles,  without  having  its  sides  equal. 


The  parallelogram,  or  rhomboid,  which 
has  its  opposite  sides  parallel. 


The  rhombus,  or  lozenge,  which  has  its  sides  equal, 
o^ithout  having  its  angles  right  angles. 


And  lastly,  the  trapezoid,  only  two  of  whose 
sides  are  parallel. 


18.  A  diagonal  is  a  line  which  joins  the 
vertices  of  two  angles  not  adjacent  to  each 
other.  Thus,  AF,  AE,  AD,  AC,  are  diagonals. 


19.  An  axiom  is  a  self-evident  proposition. 

20.  A  theorem  is  a  truth,  which  becomes  evident  by  means 
of  a  train  of  reasoning  called  a  demonstration. 

21.  A  problem  is  a  question  proposed,  which  requires 
a  solution. 

22.  A  lemma  is  a  subsidiary  truth,  employed  for  the  de- 
monstration of  a  theorem,  or  the  solution  of  a  problem. 

23.  The  common  name,  proposition,  is  applied  indifferently, 
to  theorems,  problems,  and  lemmas. 

24.  A  corollary  is  an  obvious  consequence,  deduced  from 
one  or  several  propositions. 

25.  A  scholium  is  a  remark  on  one  or  several  preceding 
propositions,  which  tends  to  point  out  their  connexion,  their 
use,  their  restriction,  or  their  extension. 

26.  A  hypothesis  is  a  supposition,  made  either  in  the  eniin- 
ciation  of  a  proposition,  or  in  the  course  of  a  demonstration. 


DESCRIPTION     OF    INSTRUMENTS.  21 

Axioms. 

I.  Things  which  are  equal  to  the  same  thing,  are  equal 
to  each  other. 

2    If  equals  be  added  to  equals,  the  wholes  will  be  equal. 

3.  If  equals  be  taken  from  equals,  the  remainders  will  be 
equal. 

4.  If  equals  be   added   to  unequals,  the  wholes   will  be 
unequal. 

5.  If  equals  be  taken  from  unequals,  the  remainders  will 
be  unequal. 

6.  Things  which  are  double  of  the  same  thing,  are  equal 
to  each  other. 

7.  Things  which  are  halves  of  the  same  thing,  are  equal 
to  each  other. 

8.  The  whole  is  greater  than  any  of  its  parts. 

9.  The  whole  is  equal  to  the  sum  of  all  its  parts. 

10.  All  right  angles  are  equal  to  each  other. 

II.  From  one  point  to  another,  only  one  straight  line  can 
be  drawn. 

12.  Through  the  same  point,  only  one  straight  line  can 
be  drawn  which  shall  be  parallel  to  a  given  line. 

13.  Magnitudes,  whict  being  applied  to  each  other,  coin- 
cide throughout  their  whole  extent,  are  equal. 


CHAPTER  III. 

Description  of  the  Instruments  used  for  Delineating  or  Drawing 
Lines  and  Angles  on  paper.     Construction  of  Problems. 

18.  Drawings,  or  delineations  on  paper,  are  the  copies  of 
things  which  they  are  intended  to  represent. 

In  order  that  these  copies  may  be  exact,  their  different  parts 
must  bear  the  same  proportion  to  each  other  that  exists 
between  the  corresponding  parts  of  the  things  themselves. 

To  enable  us  to  delineate  lines  and  angles  correctly,  upon 
paper,  certain  instruments  are  necessary  ;  these  we  will  now 
describe. 


22 


INTRODUCTION. 


DIVIDERS. 


19.  The  dividers  is  the  most  simple  and  useful  of  the  in- 
struments used  for  drawing.  It  consists  of  two  legs  6a,  be, 
which  may  be  easily  turned  around  a  joint  at  b. 

One  of  the  principal  uses  of  this  instrument  is  to  lay  off  on 
a  line,  a  distance  equal  to  a  given  line. 

For  example,  to  lay  off  on  CD  a  dis-    ^  ^ 

tance  equal  to  AB.  '  "* 

For  this  purpose,  place  the  forefinger    C ^      n 

on  the  joint  of  the  dividers,  and  set  one 

foot  at  A :  then  extend,  with  the  thumb  and  other  fingers, 
the  other  leg  of  the  dividers,  until  its  foot  reaches  the  point 
B.  Then  raise  the  dividers,  place  one  foot  at  C,  and  mark 
with  the  other  the  distance  CE  :  this  will  evidently  be 
equal  to  AB. 


RULER    AND     TRIANGLE. 


20.  A  Ruler  of  a  convenient  size,  is  about  twenty  inches 
in  length,  two  inches  wide,  and  a  fifth  of  an  inch  in  thick- 
ness. It  should  be  made  of  a  hard  material,  perfectly  straight 
and  smooth. 

The  hypothenuse  of  the  right-angled  triangle,  which  is 
used  in  connexion  with  it,  should  be  about  ten  inches  in 


DESCRIPTION    OF    INSTRUMENTS.  23 

length,  and  it  is  most  convenient  to  have  one  of  the  sides 
considerably  longer  than  the  other.  We  can  solve,  with  the 
ruler  and  triangle,  the  two  following  problems. 

I.   To  draw  through  a  given  point  a  line  which  shall  be  parallel 
to  a  given  line. 

Let  C  be  the  given  point,  and  AB  the 
given  line.  1 

Place  the  hypothenuse  of  the  triangle     ^  ^ 

against  the  edge  of  the  ruler,  and  then  "" 

place  the  ruler  and  triangle  on  the  paper,  so  that  one  of  the 
sides  of  the  triangle  shall  coincide  exactly  with  AB :  the 
triangle  being  below  the  line. 

Then  placing  the  thumb  and  fingers  of  the  left  hand  firmly 
on  the  ruler,  slide  the  triangle  with  the  other  hand  along  the 
ruler  until  the  side  which  coincided  with  AB  reaches  the 
point  C  Leaving  the  thumb  of  the  left  hand  an  the  ruler, 
extend  the  fingers  upon  the  triangle  and  hold  it  firmly,  and 
with  the  right  hand,  mark  with  a  pen  or  pencil,  a  line  through 
C:  this  line  will  be  parallel  to  AB. 

n.   To  draw  through  a  given  point  a  line  which  shall  be  per- 
pendicular to  a  given  line. 

Let  AB  be  the  given  line,  and  D  the  ip 

given  point. 

Place  the  hypothenuse  of  the  triangle  . 
against  the  edge  of  the  ruler,  as  before. 
Then  place  the  ruler  and  triangle  so  that  one  of  the  sides  of 
the  triangle  shall  coincide  exactly  with  the  line  AB.  Then 
slide  the  triangle  along  the  ruler  until  the  other  side  reaches 
the  point  D:  draw  through  D  a  right  line,  and  it  will  be  per« 
pendicular  to  AB. 

SCALE    OF    EQUAL    PARTS. 

, ; I  .7  .g  ..t.A.g  .a  .7 .8  jfip 

I  '  I    I    I    1    I    {    I    I    I    I   I- 

21.  A  scale  of  equal  parts  is  formed  by  dividing  a  line  of  a 
given  length  into  equal  portions. 

If,  for  example,  the  line  ab  of  a  given  length,  say  one  inch,  be 
divided  into  any  number  of  equal  parts,  as  10,  the  scale  thus 
formed,  is  called  a  scale  of  ten  parts  to  the  inch.     The  line 


24 


rNTRODUCTION. 


I     1  -z  ..1.A.5  .a  .7  .a  .970 


a6,  which  is  divided,  is  called  the  i*m^  o/i/ie  scale.  This  unit 
is  laid  off  several  times  on  the  left  of  the  divided  line,  ani 
the  points  marked,  1,  2,  3,  &c. 

The  unit  of  scales  of  equal  parts,  is,  in  general,  either  an 
mch,  or  an  exact  part  of  an  inch.  If,  for  example,  ab  the 
unit  of  the  scale,  were  half  an  inch,  the  scale  would  be  one 
of  10  parts  to  half  an  inch,  or  of  20  parts  to  the  inch. 

If  it  were  required  to  take  from  the  scale  a  line  equal  to 
two  inches  and  six-tenths,  place  one  foot  of  the  dividers  at  2 
on  the  left,  and  extend  the  other  to  .6,  which  marks  the  sixth 
of  the  small  divisions :  the  dividers  will  then  embrace  the 
required  distance. 

DIAGONAL    SCALE    OF    EQUAL    PARTS. 


r/^ 


i     /     f     /     /     /     /     1     1 

oa 

1  /   M   /  1   M   / 

08 

ll  1  1191  n  I 

07 

1  li  u  n  i  I 

06 

n  I  I  1  I  ll  I 

05 

I      icj  1  1  n 

04 

I      ////// 

03 

i      III    I  I 

02 

n    n  1    I  I 

0.1 

n    n    I  i  i 

a  .1  .3.3.4.5.6.7.8  .9    b 


22.  This  scale  is  thus  constructed.  Take  ah  for  the  unit 
of  the  scale,  which  may  be  one  inch,  i,  i  or  |  of  an  inch, 
in  length.  On  ah  describe  the  square  ahcd.  Divide  the  sides 
ah  and  dc  each  into  ten  equal  parts.  Draw  aj  and  the  other 
nine  parallels  as  in  the  figure. 

Produce  ha  to  the  left,  and  lay  off  the  unit  of  the  scale  any 
convenient  number  of  times,  and  mark  the  point  1,  2,  3,  &c. 
Then,  divide  the  line  ad  into  ten  equal  parts,  and  through  the 
points  of  division  draw  parallels  to  ah  as  in  the  figure. 

Now,  the  small  divisions  of  the  line  ah  are  each  one-tenth 
(.1)  of  ah;  they  are  therefore  .1  of  ad.,  or  .1  of  ««•  or  gh. 

If  we  consider  the  triangle  adj.,  the  base  df  is  one-tenth 
of  ad  the  unit  of  the  scale.  Since  the  distance  from  a  to  the 
first  horizontal  line  above  a6,  is  one  tenth  of  the  distance  arf, 
11  follows  that  the  distance  measured  on  that  Ime  between  ad 


DESCRIPTION    OF    INSTRUMENTS. 


26 


And  af  is  one-tenth  of  dj  :  but  since  one-tenth  of  a  tenth  is  a 
hundredth,  it  follows  that  this  distance  is  one  hundredth  (.01) 
of  the  unit  of  the  scale.  A  like  distance  measured  on  the 
second  line  will  be  two  hundredths  (.02)  of  the  unit  of  the 
scale  ;  on  the  third,  .03  ;  on  the  fourth,  .04,  &c. 

If  it  were  required  to  take,  in  tlie  dividers,  the  unit  of  the 
scale,  and  any  number  of  tenths,  place  one  foot  of  the  dividers 
at  1,  and  extend  the  other  to  that  figure  betv/een  a  and  h 
which  designates  the  tenths.  If  two  or  more  units,  are  re- 
quired, the  dividers  must  be  placed  on  a  point  of  division 
farther  to  the  left. 

When  units,  tenths,  and  hundredths,  are  required,  place  one 
foot  of  the  dividers  where  the  vertical  hue  through  the  point 
which  designates  the  units,  intersects  the  line  which  desig- 
nates the  hundredths  :  then,  extend  the  dividers  to  that  Hne 
between  ad  and  be  which  designates  the  tenths  :  the  dis- 
tance so  determined  will  be  the  one  required. 

For  example,  to  take  off  the  distance  2.34,  we  place  one 
foot  of  the  dividers  at  /,  and  extend  the  other  to  e  ;  and  to 
take  off  the  distance  2.58,  we  place  one  fool  of  the  dividers 
at  p  and  extend  the  other  to  q. 

Remark  I.  If  a  line  is  so  long  that  the  whole  of  it  can- 
not be  taken  from  the  scale,  it  must  be  divided,  and  the  parts 
of  it  taken  from  the  scale  in  succession. 

Remark  II.  If  a  line  be  given  upon  the  paper,  its  length  can 
be  found  by  taking  it  ia  the  dividers  and  applying  it  to  the  scale. 

SCALE    OF    CHORDS, 


D^? 


S\0   S\0     fiO 


23.  If,  with  any  radius,  as  AC,  we  describe  the  quadrant 
CD,  and  then  divide  it  into  90  equal  parts,  each  part  is  called 
9  '\egree 


26  INTRODUCTION. 

Through  C,  and  each  point  of  division,  let  a  chord  be 
drawn,  and  let  the  lengths  of  these  chords  be  accurately  laid 
off  on  a  scale  :  3uch  a  scale  is  called  a  scale  of  chords.  In 
the  figure,  the  chords  are  drawn  for  every  ten  degrees. 

The  scale  of  chords  being  once  constructed,  the  radius  of 
the  circle  from  which  the  chords  were  obtained,  is  known  ; 
for,  the  chord  marked  60  is  always  equal  to  the  radius  of  the 
circle.  A  scale  of  chords  is  generally  laid  down  on  the  scales 
which  belong  to  cases  of  mathematical  instruinents,  and  is 
marked  ciio. 

To  lay  off,  at  a  given  point  of  a  line,  with  the  scale  of  chords, 
an  angle  equal  to  a  given  angle. 

Let  AB  be  the  line,  and  Jl  the  given 
point. 

Take  from  the  scale  the  chord  of  6  0  de-  ^^ 

grees,  and  with  this  radius  and  the  point     ^^^2_^ \ 

.^  as  a  centre,  describe  the  arc  BC.    Then  -^  ^ 

take  from  the  scale  the  chord  of  the  given  angle,  say  30 
degrees,  and  with  this  line  as  a  radius,  and  5  as  a  centre, 
describe  an  arc  cutting  BC  in  C.  Through  Jl  and  C  draw 
the  line  AC,  and  BAC  will  be  the  required  angle. 


Cx- 


SEMICIRCULAR    PROTRACTOR. 


24.  This  instrument  is  used  to  lay  down,  or  protract  angles. 
It  may  also  be  used  to  measure  angles  included  between  lines 
already  drawn  upon  paper. 


DESCRIPTION     OF    INSTRUMENTS. 


27 


It  consists  of  a  brass  semicircle  ABC  divided  to  half  de- 
grees. The  degrees  are  numbered  from  0  to  180,  both  ways  ; 
that  is,  from  A  to  B  and  from  B  to  A.  The  divisions,  in  the 
figure,  are  only  made  to  degrees.  There  is  a  small  notch  at 
the  middle  of  the  diameter  AB,  which  indicates  the  centre  of 
the  protractor. 

To  lay  off  an  angle  with  a  Protractor. 

Place  the  diameter  AB  on  the  line,  so  that  the  centre  shall 
fall  on  the  angular  point.  Then  count  the  degrees  contained 
in  the  given  angle  from  A  towards  B,  or  from  B  towards  A 
and  mark  the  extremity  of  the  arc  with  a  pin.  Remove  the 
protractor,  and  draw  a  line  through  the  point  so  marked  and 
the  angular  point :  this  line  will  make  with  the  given  line  the 
required  angle. 

SECTORAL    SCALE    OP    EQUAL    PARTS. 


25.  The  sector  is  an  instrument  generally  made  of  ivory  or 
brass.  It  consists  of  two  arms,  or  sides,  which  open  by  turn- 
ing round  a  joint  at  their  common  extremity. 

There  are  several  scales  laid  down  on  the  sector :  those, 
however,  which  are  chiefly  used  in  drawing  lines  and  angles, 
are,  the  scale  of  chords  already  described,  and  the  scale  of 
equal  parts  now  to  be  explained. 

On  each  arm  of  the  sector,  there  is  a  diagonal  line  that 
passes  through  the  point  about  which  the  arms  turn:  these 
diagonal  lines  are  divided  into  equal  parts. 

On  the  sectors  which  belong  to  the  cases  of  English  in- 
struments, the  diagonal  lines  are  designated  by  the  letter  Z», 
and  numbered  from  the  centre  of  the  sector,  1,  2,  3,  4,  5,  6,  7, 
8,  9,  10,  to  the  two  extremities.     On  the  sectors  which  belong 


28  INTRODUCTION. 

to  cases  of  French  instruments,  they  are  desi^ated,  "  Les 
parties  egales,"  and  numbered,  10,  20,  30,  40,  &c.  to  200. 
On  the  English  sectors  there  are  20  equal  divisions  between 
either  two  of  the  hues  nurnbered  1,  2,  3,  &c.,  so  that,  there  are 
200  equal  parts  on  the  scale. 

The  advantage  of  the  sectoral  scale  of  equal  parts,  is  this — 
When  it  is  proposed  to  draw  a  line  upon  paper,  on  such  a 
scale  that  any  number  of  parts  of  the  line,  40  for  example, 
shall  be  represented  by  one  inch  on  the  paper,  or  by  any  part 
of  an  inch,  take  the  inch,  or  part  of  the  inch  from  the  scale 
of  inches  on  the  sector:  then,  placing  one  foot  of  the  dividers 
at  40  on  one  arm  of  the  sector,  open  the  sector  until  the  other 
foot  reaches  to  the  corresponding  number  on  the  other  arm  : 
then  lay  the  sector  on  the  table  without  varying  the  angle. 

Now,  if  we  regard  the  lines  on  the  sector  as  the  sides  of  a 
triangle,  of  which  the  line  40  measured  across,  is  the  base,  it 
is  plain,  that  if  any  other  line  be  likewise  measured  across  the 
angle  of  the  sector,  the  bases  of  the  triangles,  so  formed,  will 
be  proportional  to  their  sides.  Therefore,  if  we  extend  the 
dividers  from  50  to  50,  this  distance  will  represent  a  line  of  50, 
to  tbe  given  scale :   and  similarly  for  other  lines. 

Let  it  now  be  required  to  lay  down  a  line  of  sixty-seven  feet, 
to  a  scale  of  twenty  feet  to  the  inch. 

Take  one  inch  from  the  scale  of  inches  :  then  place  one 
foot  of  the  dividers  at  the  twentieth  division,  and  open  the 
sector  until  the  dividers  will  just  reach  the  twentieth  division 
on  the  other  arm :  the  sector  is  then  set  to  the  proper  angle  ; 
after  which  the  required  distance  to  be  laid  down  on  the  paper, 
is  found,  by  extending  the  dividers  from  the  sixty-seventh 
division  on  one  arm,  to  the  sixty-seventh  division  on  the 
other. 

GUNTERS'    SCALE. 

26.  This  is  a  scale  of  two  feet  in  length,  on  the  faces  of 
which  a  variety  of  scales  are  marked.  The  face  on  which  the 
divisions  of  inches  are  made,  contains,  however,  all  the  scales 
necessary  for  laying  down  lines  and  angles.  These  are,  the 
scale  of  equal  parts,  the  diagonal  scale  of  equal  parts,  and  the 
scale  of  chords,  all  of  which  have  been  described. 


SOLUTION  OF  PROBLEMS*  29 

SOLUTION  OF  PROBLEMS  REQUIRING  THE  USE  OF  THE  IN- 
STRUMENTS THAT  HAVE  BEEN  DESCRIBED. 

PROBLEM  I. 

*Bt  a  given  point  in  a  given  straight  line,  to  erect  a  perpendicu- 
lar  to  the  line, 

27.  Let  .^  be  the  given  point,  and  BC  the  given  line. 

From  A  lay  off  any  two  distances  AB 
and  AC  equal  to  each  other.    Then,  from  \a^ 

the  points  B  and  C,  as  centres,  with  a 
radius  greater  than  BA,  describe  tw^o 
arcs    intersecting    each     other    in    D :       ^  '^ 

draw  AD,  and  it  will  be  the  perpendicular  required. 

PROBLEM    II. 

From  a  given  point  without  a  straight  line,  to  let  fall  a  perpen^ 
dicular  on  the  line. 

23.  Let  A  be  the  given  point  and  BD 
the  given  line. 

From  the  point  .^  as  a  centre,  with  a 
radius  sufficiently  great,  describe  an  arc 
cutting  the  line  BD  in  tlie  two  points  B 
and  D :  then  mark  a  point  E,  equally 
distant  from  the  points  B  and  D,  and 
draw  AE  :  AE  will  be  the  perpendicular  required. 

PROBLEM  III. 

At  a  point,  in  a  given  line,  to  make  an  angle  equal  to  a  given 

angle, 
29.  Let  A  be  the  given  point,  AE 
the  given  line,  and  IKL  the  given 


D 


From  the  vertex  K,  as  a  centre,     K  I    J 


w^ith  any  radius,  describe  the  arc  IL,  terminating  in  the  two 
sides  of  the  angle.  From  the  point  A  us  a  centre,  with  a  dis- 
tance AE  equal  to  KI,  describe  the  arc  ED ;  then  take  the 
chord  LI,  with  which,  from  the  point  £J  as  a  centre,  describe 
an  arc  cutting  the  indefinite  arc  DE,  in  D;  draw  AD,  and 
the  angle  EAD  will  be  equal  to  the  given  angle  K. 


nf 

E^ 

\ 

,,' 

-'•"A 

i 

,■'''' 

I 

30  INTRODUCTION. 

PROBLEM     IV. 

To  divide  a  given  angle,  or  a  given  arc,  into  two  equal  parts, 

30.  Let  C  be  the  given  angle,  and  ^EB 
the  arc  which  measures  it. 

From  the  points  A  and  B  as  centres,  de-  A\^ 
scribe  with  the  same  radius  two  arcs  cutting 
each  other  in  D :  through  D  and  the  centre 
C  draw  CD:  the  angle  ^CE  will  be  equal 
to  the  angle  ECB,  and  the  arc  AE  to  the  arc  EB. 

PROBLEM    V. 

Through  a  given  point  to  draw  a  parallel  to  a  given  line, 

31.  Let  A  be  the  given  point,  and 
BC  the  given  line. 

From  .^  as  a  centre,  with  a  radius 
greater  than  the  shortest  distance  from 
e^  to  BC,  describe  the  indefinite  arc  ED  :  from  the  point  E  as 
a  centre,  with  the  same  radius,  describe  the  arc  AF ;  make 
ED=AF,  and  draw  JID :  then  will  AD  be  the  parallel 
required. 

PROBLEM    VI. 

Tim  angles  of  a  triangle  being  given,  to  find  the  third. 

32  Draw  the  indefinite  line 
DEF.  At  the  point  E,  make 
the  angle  DEC  equal  to  one  of 
the  given  angles,  and  the  angle    "^  W 

CEH  equal  to  the  other :  the  remaining  angle  HEF  will  be 
the  third  angle  required. 

PROBLEM    VII. 

To  lay  down,  on  paper,  a  line  of  a  given  length,  so  that  any 
number  of  its  parts  shall  correspond  to  the  unit  of  the  scale. 

33.  Suppose  that  the  given  line  were  75  feet  in  length,  and 
it  were  required  to  draw  it  on  paper,  on  a  scale  of  25  feet  to 
the  inch. 


SOLUTION    OF    PROBLEMS.  31 

The  length  of  the  hne  75  feet,  being  divided  by  25,  will  -give 
3,  the  number  of  inches  which  will  represent  the  line  on 
paper 

Therefore,  draw  the  indefinite  line  .S.B,  on  which  lay  of!  a 


distance  AC  equal  to  3  inches:  AC  will  represent  the  given 
line  of  75  feet  draw^n  to  the  required  scale. 

Remark  I.  This  problem  explains  the  manner  of  laying 
dow^n  a  line  upon  paper,  in  such  a  manner  that  a  given  num- 
ber of  parts  shall  correspond  to  the  unit  of  the  scale,  whether 
that  unit  be  an  inch  or  any  part  of  an  inch. 

When  the  length  of  the  line  to  be  laid  down  is  given,  and  it 
has  been  determined  how  many  parts  of  it  are  to  be  repre- 
sented on  the  paper  by  a  distance  equal  to  the  unit  of  the 
scale,  we  find  the  length  which  is  to  be  taken  frv  ^vi  the  scale 
by  the  following 

RULE. 

Divide  the  length  of  the  line  by  the  number  of  parts  which  is  to 
be  represented  by  the  unit  of  the  scale  :  the  quotient  will  show  the 
number  of  parts  which  is  to  be  taken  from  the  scale. 

EXAMPLES. 

1.  If  a  line  of  640  feet  in  length  is  to  be  laid  down  on 
paper,  on  a  scale  of  40  feet  to  the  inch  ;  what  length  must 
be  taken  from  the  scale  ? 

40)640(16  inches. 

2.  If  a  line  of  357  feet  is  to  be  laid  down  on  a  scale  of  6S 
feet  to  the  unit  of  the  scale,  (which  we  will  suppose  half  an 
inch),  how  many  parts  are  to  be  taken? 


Ans.  \  ^•^^'  P^'^f'  ^' 
I  2.62  5  inches. 


Remark  II.  When  the  length  of  a  hne  is  given  on  the 
paper,  and  it  is  required  to  find  the  true  length  of  the  line 
which  it  represents,  take  the  line  in  the  dividers  and  apply  it 
to  the  scale,  and  note  the  number  of  units,  and  parts  of  an 


32 


INTRODUCTION. 


unit  to  which  it  is  equal.  Then  multiply  this  number  by  the 
mmiber  of  parts  which  the  imit  of  the  scale  represents,  and 
the  product  will  be  the  length  of  the  line. 

For  example,  suppose  the  length  of  a  line  drawn  on  the 
paper  was  found  to  be  3. 50  inches,  the  scale  being  40  feet  to 
the  inch  :   then, 

3.56  X  40=142  feet,  the  length  of  the  line. 


PROBLEM    VIII. 


Having  given  two   sides  and  the  included  angle  of  a  triangle,  to 


describe  the  triangle. 


34.  Let  the  line  ji5  =  150  feet,  and 
C=  120  feet,  be  the  given  sides  ;  and 
^  =  30  degrees,  the  given  angle:  to 
describe  the  triangle  on  a  scale  of  200 
feet  to  the  inch. 

Draw  the  indefinite  line  DG,  and 
Jit  the  point  D,  make  the  angle  GDH  equal  to  30  degrees; 
then  lay  off  DGf  equal  to  150,  equal  to  three  quarters  of  an 
inch,  and  D// equal  to  120,  equal  to  six  tenths  of  an  inch, 
and  draw  Gil:  DG/f  will  be  the  required  triangle. 


PROBLEM    IX. 


Tlie    three    sides    of   a    triangle    being   given,  to   describe    the 
triangle, 

35.  Let  ^,  B  and  C,  be  the  sides. 
Draw  DE  equal  to  the  side  A,  From 
the  point  J9  as  a  centre,  with  a  radius 
equal  to  the  second  side  B,  describe  an 
arc  :  from  ^  as  a  centre,  with  a  radius 
equal  to  the  third  side  C,  describe 
another  arc  intersecting  the  former  in 

F ;    draw  DF  and    EF,    and    DEF   will  be    the    triangle 
required. 


AV 


SOLUTION  OP  PROBLEMS.  33 


PROBLEM  X. 

Having  given  two  sides  of  a  triangle  and  an  angle  opposite  one 
of  them,  to  describe  the  triangle. 

36.  Let  A  and  B    be  the    given 

sides,  and   C  the  given  angle  which       ^"^ 

we  will  suppose  is  opposite  the  side 


B.     Draw  the  indefinite  line  DF  and 

make  the  angle  FDH  equal  to  the 

angle   C:  take  DH=A,   from    the 

point  H,  as  a  centre,  with  a  radius  equal  to  the  other  given 

side  B,  describe  an  arc  cutting  DF  m  F;  draw  HF:  then 

will  DHF  be  the  required  triangle. 

If   the   angle  C  is  acute,  and    ^'  '    ^^^^ 

the  side  5  less  than  A.  then  the    ^'  ' 

E 
arc  described  from  the  centre  F  ^^^^-^^^'^ 

with  the  radius  FF  —  B  will  cut  ^.^^y^      ^v 

the  side  BF  in  two  points,  F  and    -O         jyC  /QT 

Gy  lying  on  the  same  side  of  D  :  ''" -  ' 

hence  there  will  be  two  triangles,  DEF,  and  DEG,  either  of 

which  will  satisfy  all  the  conditions  of  the  problem. 


PROBLEM    XI. 

The  adjacent  sides   of  a  parallelogram,  with  the   angle  which 
they  contain,  being  given,  to  describe  the  parallelogram. 

37.  Let  Jl  and  B  be  the  given  sides,         /?y -^G 

and  C  the  given  angle.  /  r  * 

Draw  the  line  1)^=.^;  at  the  point  j^L IE 

D,  make   the  angle  EDF=  C ;  take  A\ 1     / 

DF=B  :  describe  two  arcs,  the  one  ^'  ' 


from  F,  as  a  centre,  with  a  radius  FG=DE,  the  other  from  E, 
as  a  centre,  with  a  radius  EG=DF ;  through  the  point  G, 
where  these  arcs  intersect  each  other,  draw  FG,  EG;  DEGF 
will  be  the  parallelogram  required. 


34  INTRODUCTION. 

PROBLEM  XII. 

To  find  the  centre  of  a  given  circle  or  arc. 

38.  Take  three  points,  A,  B,  C,  any- 
where in  the  circumference,  or  in  the 
arc  :  draw  AB,  BC ;  bisect  these  two 
lines  by  the  perpendiculars,  DE,  FG : 
the  point  O  where  these  perpendiculars 
meet  will  be  the  centre  sought. 

The  same  construction  serves  for 
making  a  circumference  pass  through 
three  given  points  Jl,  B,  C,  and  also  for  yff^ 

describing  a  circumference,  about  a  given  triangle. 


CHAPTER  III. 

Plane  Trigonometry* 

39.  In  every  plane  triangle  there  are  six  parts  :  three  sides 
and  three  angles.  These  parts  are  so  related  to  each  other, 
that  if  a  certain  number  of  them  are  known  or  given,  the  re- 
maining ones  can  be  determined. 

40.  Plane  Trigonometry  explains  the  methods  of  finding,  by 
calculation,  the  unknown  parts  of  a  triangle  when  a  sufficient 
number  of  the  six  parts  is  given^ 

It  has  already  been  shown,  in  the  problems,  that  triangles 
may  be  constructed  when  three  parts  are  known.  But  these 
constructions,  which  are  called  graphic  methods,  though  per- 
fectly correct  in  theory,  would  give  only  a  moderate  approxi- 
mation in  practice,  on  account  of  the  imperfection  of  the  in 
struments  required  in  constructing  them. 

Trigonometrical  methods,  on  the  contrary,  being  inde- 
pendent of  mechanical  operations,  give  solutions  with  the 
utmost  accuracy. 

41.  For  the  purposes  of  trigonometrical  calculations,  the  cir- 
cumference of  the  circle  is  divided  into  360  equal  parts,  called 
degrees;  each  degree  into  60  equal  parts,  called  minutes; 
and  each  minute  into  6  0  equal  parts,  called  seconds. 


PLANE    TRIGONOMETRY. 


35 


As  the  circumference  of  a  circle  may  be  regarded  as  a  pro- 
per measure  of  angles,  having  their  vertices  at  the  centre,  the 
four  right  angles  which  can  be  formed  about  the  same  point, 
are  measured  by  360  degrees  ;  two  right  angles  by  180  de 
grees,  one  right  angle  by  90  degrees,  and  an  angle  less 
than  a  right  angle,  by  an  arc  less  than  90  degrees. 

Degrees,  minutes,  and  seconds,  are  usually  designated  by 
the  respective  characters,  °  '  ".  Thus,  16"  12'  15"  is  read, 
16  degrees,  12  minutes,  and  15  seconds. 

42.  The  complement  of  an  arc  is  -^ 
what  remains  after  subtracting  the 
arc  from  90°.  Thus,  the  arc  EB  is 
the  complement  of  AB.  The  sum  of 
an  arc  and  its  complement  is  equal 
to  90°. 

43.  The   supplement   of  an   arc   is 
what  remains  after  subtracting  the 
arc  from  180°.    Thus,  Gl^  is  the  sup-  q 
plement  of  the  arc  AEF.     The  sum  of  an  arc  and  its  sup- 
plement is  equal  to  180°. 

44.  The  sine  of  an  arc  is  the  perpendicular  let  fall  from  one 
extremity  of  the  arc  on  the  diameter  which  passes  through 
the  other  extremity.     Thus,  BD  is  the  sine  of  the  arc  t^B. 

45.  The  cosine  of  an  arc  is  the  part  of  the  diameter  inter- 
cepted between  the  foot  of  ths  sine  and  centre.  Thus,  OD  is 
the  cosine  of  the  arc  AB. 

46.  The  tangent  of  an  arc  is  the  line  which  touches  it  at 
one  extremity,  and  is  limited  by  a  line  drawn  through  the 
other  extremity  and  the  centre  of  the  circle.  Thus,  AC  is  the 
tangent  of  the  arc  AB. 

47.  The  secant  of  an  arc  is  the  line  drawn  from  the  centre 
of  the  circle  through  one  extremity  of  the  arc,  and  limited  by 
the  tangent  passing  through  the  other  extremity.  Thus,  OC 
is  the  secant  of  the  arc  AB. 

48.  The  four  lines,  BD,  OD,  AC,  OC,  depend  for  their 
values  on  the  arc  AB  and  the  radius  OA  ;  they  are  thus 
designated : 


sin  AB 
cos  JIB 

ianAB 
sec  AB 


for 
for 
for 
for 


INTRODUCTION. 

BD 

OD 

AC 

OC. 


49.  If  ABE  be  equal  to  a  quad- 
rant, or  90°,  then  EB  Avill  be  the 
complement  of  AB.  Let  the  lines 
ET  and  IB  be  drawn  perpendicular 
to  OE.     Then, 

ET,  the  tangent  of  EB,  is  called  the  cotangent  of  AB; 

IB,  the  sine  of  EB,  is  equal  to  the  cosine  of  AB ; 

OT,   the  secant  of    EB,   is  called  the  cosecant  of  AB, 

In  general,  if  A  is  any  arc  or  angle,  we  have, 

cos  A=s\n  {900  — A) 

cot  .^=tan  (900  —  ^) 

cosec*^=sec  (900  — ^3) 

50.  If  we  take  an  arc  ABEF,  greater  than  90°,  its  sine 
will  be  FH ;  OH  will  be  its  cosine  ;  ^Q  its  tangent,  and  0(2 
its  secant.  But  FH  is  the  sine  of  the  arc  GF,  which  is  the 
supplement  of  AF,  and  OH  is  its  cosine  :  hence,  the  sine  of 
an  arc  is  equal  to  the  sine  of  its  supplement ;  and  the  cosine  of 
an  arc  is  equal  to  the  cosine  of  its  supplement."^ 

Furthermore,  AQ^  is  the  tangent  of  the  arc  AF,  and  OQ,  is 
its  secant :  GL  is  the  tangent,  and  OL  the  secant,  of  the  sup- 
plemental  arc  GF.  But  since  AQ  is  equal  to  GL,  and  OQ,  to 
OL,  it  follows  that,  the  tangent  of  an  arc  is  equal  to  the  tan- 
gent of  its  supplement ;  and  the  secant  of  an  arc  is  equal  to  the 
secant  of  its  supplement.^ 

Let  us  suppose,  that  in  a  circle  of  a  given  radius,  th.e  lengths 
of  the  sine,  cosine,  tangent,  and  cotangent,  have  been  calcu- 
lated for  every  minute  or  second  of  the  quadrant,  and  arranged 
in  a  table ;  such  a  table  is  called  a  table  of  sines  and  tangents. 
If  the  radius  of  the  circle  is  1,  the  table  is  called  a  table  of 
natural  sines.     A  table  of  natural  sines,  therefore,  sliows  the 


+  These  relations    are   between   the  vdues  of  the  trigonometrical   lines;   the 
algebraic  signs,  wliich  they  have  in  the  different  quadrants,  are  not  considered. 


PLANE     TRIGONOiMETRY. 


37 


values  of   the  sines,  cosines,  tangents  and  cotangents  of  all 
the  arcs  of  a  quadrant,  divided  to  minutes  or  seconds. 

If  the  sines,  cosines,  tangents  and  secants  are  known  for 
arcs  less  than  90°,  those  for  arcs  which  are  greater  can  be 
found  from  them.  For  if  an  arc  is  less  than  90°,  its  supple- 
ment will  be  greater  than  90°,  and  the  values  of  these  lines 
are  the  same  for  an  arc  and  its  supplement.  Thus,  if  we  know 
the  sine  of  20°,  we  also  know  the  sine  of  its  supplement  160°; 
for  the  two  are  equal  to  each  other. 

TABLE    OF    LOGARITHMIC    SINES. 

51.  In  this  table  are  arranged  the  logarithms  of  the  nu- 
merical values  of  the  sines,  cosines,  tangents  and  cotan- 
gents of  all  the  arcs  of  a  quadrant,  calculated  to  a  radius 
of  10,000,000,000.  The  logarithm  of  this  radius  is  10.  In 
the  first  and  last  horizontal  lines  of  each  page,  are  written  the 
degrees  whose  sines,  cosines,  &c.  are  expressed  on  the  page. 
The  vertical  columns  on  the  left  and  right,  are  columns  of 
minutes. 

CASE    I. 

To  Jind,  in  the  table,  the  logarithmic  sine,  cosine,  tangent,  or 
cotangent  of  any  given  arc  or  angle. 

52.  If  the  angle  is  less  than  45°,  look  for  the  degrees  in  the 
first  horizontal  line  of  the  different  pages  :  then  descend  along 
the  column  of  minutes,  on  the  left  of  the  page,  till  you  reach 
the  number  showing  the  minutes :  then  pass  along  the  hori- 
zontal line  till  you  come  into  the  column  designated,  sine, 
cosine,  tangent,  or  cotangent,  as  the  case  may  be  :  the  number 
so  indicated  is  the  logarithm  sought.  Thus,  on  page  37,  for 
19"  55'  we  find, 

sin  19°  55'  .  .  9.532312 

cos  19°  55'  .  .  9.973215 

tan  19°  55'  .  .  9.559097 

cot  19°  55'  .  .         10.440903 

53.  If  the  angle  is  greater  than  45°,  search  for  the  degrees 
along  the  bottom  line  of  the  different  pages  :  then,  ascend 
along  the  column  of  mmutes  on  the  right  hand  side  of  the 
page,  till  you  reach  the  number  expressing  the  minutes  :  then 
pass  along  the  horizontal  hne  into  the  columns  designated 


S8  INTRODUCTION. 

tang,  cot,  sine,  or  cosine,  as  the  case  may  be  ;  the  number  so 
pointed  out  is  the  logarithm  required. 

54.  The  column  designated  sine,  at  the  top  of  the  page,  is 
designated  cosine  at  the  bottom ;  the  one  designated  tang,  by 
cotang,  and  the  one  designated  cotang,  by  tang. 

The  angle  found  by  taking  the  degrees  at  the  top  of  the 
page  and  the  minutes  from  the  first  vertical  column  on  the 
left,  is  the  complement  of  the  angle  found  by  taking  the  cor- 
responding degrees  at  the  bottom  of  the  page,  and  the  minutes 
traced  up  in  the  right  hand  column  to  the  same  horizontal 
line.  Therefore,  sine,  at  the  top  of  the  page,  should  correspond 
with  cosine,  at  the  bottom ;  cosine  with  sine,  tang  with  cotang, 
and  cotang  with  tang,  as  in  the  tables  (Art.  49). 

If  the  angle  is  greater  than  90°,  we  have  only  to  subtract  it 
from  180°,  and  take  the  sine,  cosine,  tangent  or  cotangent  of 
the  remainder. 

The  column  of  the  table  next  to  the  column  of  sines,  and 
on  the  right  of  it,  is  designated  by  the  letter  D,  This  column 
is  calculated  in  the  following  manner. 

Opening  the  table  at  any  page,  as  42,  the  sine  of  24°  is 
found  to  be  9.609313  ;  that  of  24°  01',  9.609597:  their  dif- 
ference is  284  ;  this  being  divided  by  60,  the  number  of  seconds 
in  a  minute,  gives  4.73,  which  is  entered  in  the  column  Z^, 
omitting  the  decimal  point. 

Now,  supposing  the  increase  of  the  logarithmic  sine  to  be 
proportional  to  the  increase  of  the  arc,  and  it  is  nearly  so  for 
60",  it  follows,  that  473  (the  last  two  places  being  regarded  as 
decimals),  is  the  increase  of  the  sine  for  l".  Similarly,  if  the 
arc  were  24°  20'  the  increase  of  the  sine  for  l",  would  be  465, 
the  last  two  places  being  decimals 

The  same  remarks  are  equally  applicable  in  respect  of  the 
column  D,  after  tlie  column  cosine,  and  of  the  column  D,  be- 
tween the  tangents  and  cotangents.  The  column  D,  between 
the  columns  tangents  and  cotangents,  answers  to  both  of  these 
columns. 

Now,  if  it  were  required  to  find  the  logarithmic  sine  of  an 
arc  expressed  in  degrees,  minutes,  and  seconds,  we  have  only 
to  find  the  degrees  and  minutes  as  before  ;  then,  multiply  the 
corresponding  tabular  number  by  the  seconds,  cut  off  two 
places  to  the  right  hand  for  decimals,  and  then  add  the  pro- 
duct to  the  number  first  found,  for  the  sine  of  the  given  arc. 


PLANE    TRIGONOMETRY.  39 

Thus,  if  we  wish  the  sine  of  40°  26'  28". 

The  sine  40°  26'  ....  9.811952 

Tabular  difference     .247 

Number  of  seconds    .28  .         . 

Product     .     .     69  16  to  be  added  69.16 

Gives  for  the  sine  of  40«  36'  28"  9.812021. 

The  decimal  figures  at  the  right  are  generally  omitted 
in  the  last  result  ;  but  when  they  exceed  five-tenths,  the 
figure  on  the  left  of  the  decimal  point  is  increased  by  i ;  this 
gives  the  result  to  the  nearest  unit. 

The  tangent  of  an  arc,  in  which  there  are  seconds,  is  found 
in  a  manner  entirely  similar.  In  regard  to  the  cosine  and 
cotangent,  it  must  be  remembered,  that  they  increase  while 
the  arcs  decrease,  and  decrease  as  the  arcs  are  increased  ;  con- 
sequently, the  proportional  numbers  found  for  the  seconds, 
must  be  subtracted,  not  added. 

EXAMPLLS. 

1.  To  find  the  cosine  of  3°  40'  40" 

The  cosine  of  3°  40'  .         .  9.999110 

Tabular  difference     .13 

Number  of  seconds  40  .  . 

Product  .  5.20  to  be  subtracted  5.20 

Gives  for  the  cosine  of  3°  40'  40"       .       .       9.999105 

2.  Find  the  tangent  of  37°  28'  31" 


3.  Find  the  cotangent  of  87"  57'  59" 


Alls.  9.884592. 
Ans.  8.550356. 


CASE    II. 


To  find  the  degrees,  minutes   and   seconds,   answering    to  any 
given  logarithmic  sine,  cosine,  tangent  or  cotangent. 

56.  Search  in  the  table,  and  in  the  proper  column,  until  the 
number  is  found  :  the  degrees  will  be  shown  either  at  the  top 
or  bottom  of  the  page,  and  the  minutes  in  the  side  columns, 
either  at  the  left  or  right. 

But,  if  the  number  cannot  be  exactly  found  in  the  table, 
take  from  the  table  the  degrees  and  minutes  answering  to  the 
nearest  less  logarithm,  the  logarithm  itself,  and  also  the  cor- 
responding tabular  difference.     Subtract  the  logarithm  taken 


40 


INTRODUCTION. 


from  the  table  from  the  given  logarithm,  annex  two  ciphers  to 
the  remainder,  and  then  divide  "the  remainder  by  the  tabular 
difference :  the  quotient  will  be  seconds,  and  is  to  be  connected 
with  the  degrees  and  minutes  before  found ;  to  be  added  for 
the  sine  and  tangent,  and  subtracted  for  the  cosine  and 
cotangent. 


EXAMPLES. 


1.  Find  the  arc  answering  to  the  sine 
Sine  49"  20',  next  less  in  the  table 
Tabular  difference 


9.880054 
9.879963 


181)9100(50" 

Hence,  the  arc  49°  20'  50"  corresponds  to  the   given  sine 
9.880054. 

2.  Find  the  arc  whose  cotangent  is     .  10.008688 
cot  44°  26',  next  less  in  the  table  .     .  10.008591 

Tabular  difference     .     .  421)9700(23" 

Hence,  44°  26'  — 23"  =  44°  25'  37"  is  the  arc  answering  to 
the  given  cotangent   10.008688. 

3.  Find  the  arc  answering  to  tangent  9.979110 

Ans.  43°  37'  21" 

4.  Find  the  arc  answering  to  cosine  9.944599 

Ans.  28°  19'  45". 
We  shall  now  demonstrate  the  principal  theorems  of  Plane 
Trigonometry. 


THEOREM    I. 

The  sides  of  a  plane  triangle  are  'proportional  to  Vie  sines  of 
their  opposite  angles. 

67.  Let  ABC  be  a  triangle  ;  then  will 
CB  :   CA  ::  sin  A  :  sin  B. 

For,  with  .^  as  a  centre,    and   AD 
equal  to  the  less  side  BC,  as  a  radius, 
describe  the  arc   DI :  and  with   B    as 
a    centre   and    the    equal    radius    BC,      . 
describe  the  arc  CL :  now  DE  is  the 
sine  of  the  angle  A,  and  CF   is  the  sine  of  B,  to  the  same 
radius  AD  or  BC.     But  by  similar  triangles, 
AD  :  DE  ::  AC  :   CR 


El  L 


PLANE    TRIGONOMETRY.  41 

But  AD  being  equal  to  BC,  we  have 

BC  :  s'mA::  AC  :  sm  B,  or 
BC    :  AC     ::smA    :  sin  J5. 
By  comparing  the  sides  AB,  AC,  in  a  similar  manner,  we 
should  find,  AB  :  AC  ::  sin  C  :  sin  B, 

THEOREM    II. 

In  any  triangle,  the  sum  of  the  two  sides  containing  either 
angle,  is  to  their  difference,  as  the  tangent  of  half  the  sum  of 
the  two  other  angles,    to    the   tangent  of  half  their  difference, 

58.  Let   ACB  be  a  triangle  :  then  will 

AB-]-AC:    AB-AC:   :  tan  i(C+^)    :   tan  i(C-jB). 

With  ,^  as  a  centre,  and  a  radius 
AC  the  less  of  the  two  given  sides,     ,\" 
let    the   semicircle    IFCE    be  de-    <  \ 
scribed,  meeting  AB  in  /,  and  BA   \ 
produced,   in  E.     Then,   BE  will    \ 
be   the  sum  of  the  sides,   and  Bl         ^.  pr-rr 

their  difference.    Draw  C/ and  .^7^. 

Since  CAE  is  an  outward  angle  of  the  triangle  ACB,  it  is 
equal  to  the  sum  of  the  inward  angles  C  and  B  (Bk.  I,  Prop. 
XXV,  Cor.  6).  But  the  angle  CIE  being  at  the  circumfe- 
rence, is  half  the  angle  CAE  at  the  centre  (Bk.  Ill,  Prop. 
XVIII)  ;  that  is,  half  the  sum  of  the  angles  C  and  B,  or 
equal  to  i(C+J5). 

The  angle  AFC=ACB,  is  also  equal  to  ABC+BAF ; 
therefore,  BAF=ACB-ABC. 

But,  ICF={{BAF)=\{ACB-ABC),  or  \{C-B). 

With  /  and  C  as  centres,  and  the  common  radius  IC,  let 
the  arcs  CD  and  IG  be  described,  and  draw  the  lines  CE  and 
IH  perpendicular  to  IC.  The  perpendicular  CE  will  pass 
through  E,  the  extremity  of  the  diameter  IE,  since  the  right 
angle  ICE  must  be  inscribed  in  a  semicircle. 

But  CE  is  the  tangent  of  CIE  =  \{C+B)  ;  and  IH  \s  the 
tangent  of  ICB  =  \{C--B),  to  the  common  radius  CI. 

But  since  the  lines  CE  and  IH  are  parallel,  the  triangles 
BHI  and   BCE   are  similar,  and  give  the  proportion, 

BE  :  BI  ::   CE  :  IH,  or 
by  placing  for  BE  and  BI,  CE  and  IH,  their  values,  we  have 

AB+AC  :  AB-AC  :  :  tan  i(C+B)  •  tan  1{C-B). 


42  INTRODUCTION. 

THEOREM    III. 

In  any  plane  triangle,  if  a  line  he  drawn  from  the  vertical 
angle  perpendicular  to  the  base,  dividing  it  into  two  segments : 
then,  the  whole  base,  or  sum  of  the  segments,  is  to  the  sum  of  the 
other  two  sides,  as  the  difference  of  those  sides  to  the  difference 
of  the  segments. 

59.  Let  BAC  be  a  triangle,  and  AD  perpendicular  to  the 
base  ;  then  will 

BC:  CA+AB::  CA-AB :  CD-^DB 

For,  AB'=BD'+AD^ 

(Bk.  IV,  Prop.  XI)  ; 
and  AC^=DC^+AD^ 

by    subtraction     AC^^AB^=CD^— 
BD\ 

But  since  the  difference  of  the  squares  ^ 
of  two  lines  is  equal  to  the  rectangle 

contained  by  their  sum  and  difference  (Bk.  IV,  Prop   X),  we 
have, 

AC^--AB'  =  (AC+AB).  (AC-AB) 
and  CD'-DB^  =  {CD+DB).  (CD-DB) 

therefore,  {CD+DB).{CD-DB)  =  (AC+AB).{AC^AB) 
hence,       CD+DB  :  AC+AB  :  :  AC-AB  :   CD-DB. 

THEOREM    IV. 

In  any  right-angled  plane  triangle,  radius  is  to  the  tangent 
of  either  of  the  acute  angles,  as  the  side  adjacent  to  the  side 
opposite. 

60.  Let  CAB  be  the  proposed  triangle, 
and  denote  the  radius  by  R  :  then  will 

R.  i^nC  :  AC  :  AB. 
For,  with  any  radius  as  CD  describe 
the  arc  DH,  and  draw  the  tangent  jDCr.     ^  D  ^ 

From  the  similar  triangles  CDG  and  CAB  we  shall  have, 
CD  :  DG::  CA:  AB;  hence,  * 

R  :  tan  C  :  :   CA  :  AB. 
By  describing  an  arc  with  5  as  a  centre,  we  could  show  in 
the  same  manner  that, 

R  :  idiu  B  ::  AB  :  AC. 


PLANE    TRIGONOMETRY.  4S 

THEOREM    V. 

In  every  right-angled  plane  triangle,  radius  is  to  the  cosine  oj 
either  of  the  acute  angles,  as  the  hypothenuse  to  the  side  adjacent. 

61.  Let   ABC  be   a   triangle,    right 
angled  at  B  then  will 

R  :  cos  A  :  AC  :  AB. 
For,  from  the  point  .^  as  a  centre,  and 
any  radius  as  AD,  describe  the  arc  DF,  ^^ 

which  will  measure  the  angle  A,  and  draw  jDiJ  perpendicular 
io  AB  :  then  will  AE  be  the  cosine  of  A. 

The  triangles  ADE  and  ACB,  being  similar,  we  have 
AD  :  AE  :  :  AC  :  AB  :  thatis, 
jR  :  cos  ^  ; :  AC:  AB. 

62.  Remark.  The  relations  between  the  sides  and  angles 
of  plane  triangles,  demonstrated  in  these  five  theorems,  are  suf- 
ficient to  solve  all  the  cases  of  Plane  Trigonometry.  Of  the 
six  parts  which  make  up  a  plane  triangle,  at  least  three  must 
be  given,  and  one  of  these  a  side,  before  the  others  can  be  de- 
termined. 

If  the  three  angles  are  given,  it  is  plain,  that  an  indefi- 
nite number  of  similar  triangles  may  be  constructed,  the 
angles  of  which  shall  be  respectively  equal  to  the  angles 
that  are  given,  and  therefore,  the  sides  could  not  be  de- 
termined. 

Assuming,  with  this  restriction,  any  three  parts  of  a  triangle 
as  given,  one  of  the  four  following  cases  will  always  be  pre- 
sented. 

I.  When  two  angles  and  a  side  are  given. 

II.  When  two  sides  and  an  opposite  angle  are  given. 

III.  When  two  sides  and  the  included  angle  are  given. 

IV.  When  the  three  sides  are  given. 

CASE    I. 

When  two  angles  and  a  side  are  given. 

63.  Add  the  given  angles  together  and  subtract  their  sum 
from  180  degrees.  The  remaining  parts  of  the  triangle  can 
then  be  found  by  Theorem  I. 


44 


INTRODUCTION, 


EXAMPLES. 


1.  In 

are   given 


a  plane  triangle  ABC,  there 
the  angle  .^  =  58°  07',  the 
angle  ^=22°  37',  and  the  side  AB  = 
408  yards.     Required  the  other  parts. 


INSTRUMENTALLY. 

Draw  an  indefinite  straight  line  AB,  and  from  the  scale  of 
equal  parts  lay  off  AB  equal  to  408.  Then  at  A  lay  off  an 
angle  equal  to  58°  07',  and  at  B  an  angle  equal  to  22"  37',  and 
draw  the  lines  AC  and  BC  :  then  will  ABC  be  the  triangle 
required. 

The  angle  C  may  be  measured  either  with  the  protractor  or 
the  scale  of  chords  (Arts.  23  and  24),  and  will  be  found  equal 
to  99°  16'.  The  sides  AC  and  BC  may  be  measured  by  re- 
ferring them  to  the  scale  of  equal  parts  (Art.  22).  We  shall 
find  .^0  =  158.9  and  BC=S5l  yards. 


BY 

LOGARITHMS. 

To  the  angle 

.   ^-58°  07' 

Add  the  angle    . 

.  B  =  22»37' 

Their  sum 

.       =80°  44' 

taken  from  . 

180°  00' 

leaves  C 

99°  16'  which, 

exceeding  90* 

we  use  its  supplement 

80°  44'. 

To  find  the  side  BC. 

As  sin  C  .     99°  16' 

ar.  comp.     . 

0.005705 

:  sin     A  ,     580  07' 

.          •         •         • 

.    9.928972 

:  :     AB  .        408 

. 

.    2.610660 

:        BC  .    351.024 

(after  rejecting  1 0) 

.   .    2.545337 

Remark.  The  logarithm  of  the  fourth  term  of  a  proportion 
IS  obtained  by  adding  the  logarithm  of  the  second  term  to  that 
of  the  third,  and  subtracting  from  their  sum  the  logarithm  of 
the  first  term.  But  to  subtract  the  first  term  is  the  same  as 
to  add  its  arithmetical  complement  and  reject  1 0  from  the  sinn 
(Art.  17)  :  hence,  the  arithmetical  complement  of  the  first 
term  added  to  the  logarithms  of  the  second  and  third  terms, 
will  give  the  logarithm  of  the  fourth  term. 


PLANE    TRIGONOMETRY.  46 


To  find  side  AC, 

As  sin  C 
:    sin  B 
:  :     ^B 

990  16' 
22°  37' 
408 
158.976 

ar.  comp.    . 

.      0.005705 
.       9.58496S 
.       2.610660 

:        AC 

.        2.201333 

2.  In  a  triangle  ABC,  there  are  given  .^  =  38°  25', 
B  =  bl^  42',  and  .^5  =  400  :  required  the  remaining  parts. 
Ans.    C  =  83»  53',  ^C  =  249.974,  .^C  =  340.04. 

CASE    II. 

When  two  sides  and  an  opposite  angle  are  given 

64.  In  a  plane  triangle  ABC,  there  c 

are  given   .^C=216,    CJ5=117, 
angle   .^=22°  37',   to   find   the 
parts. 

INSTRUMENTALLY. 

Draw  an  indefinite  right  line  ABB' :  from  any  point  as 
A,  draw  AC  making  BAC  =  22^  37',  and  make  ^C=216. 
With  C  as  a  centre,  and  a  radius  equal  to  117,  the  other  given 
side,  describe  the  arc  B'B;  draw  B'C  and  BC:  then  will 
either  of  the  triangles  ABC  or  AB'C,  Sinswev  all  the  condi- 
tions of  the  question. 


BY    LOGARITHMS. 

To  find  the  angle  B. 

As  BC 

.      117         .     ar.  comp. 

.      7.931814 

:    AC 

.     216         ...         . 

.       2.334454 

:  :  sin  .^ 

.      22°  37'    .... 

.       9.584968 

:    sin  B' 

45°  13' 55",  or  ABC  134°  46' 05" 

9.851236 

The  ambiguity  in  this,  and  similar  examples,  arises  in  conse- 
quence of  the  first  proportion  being  true  for  either  of  the  angles 
ABC,  or  AB'C,  which  are  supplements  of  each  other,  and 
therefore  have  the  same  sine  (Art.  43).  As  long  as  the  two  tri- 
angles exist,  the  ambiguity  will  continue.  But  if  the  side  CB, 
opposite  the  given  angle,  is  greater  than  AC,  the  arc  BB'  will 
cut  the  line  ABB',  on  the  same  side  of  the  point  A,  in  but  one 


46  INTRODUCTION. 

point,  and  then  there  will  be  only  one  triangle  answering  the 
conditions. 

If  the  side  CB  is  equal  to  the  perpendicular  Cd,  the 
arc  BB'  will  be  tangent  to  ABB',  and  in  this  case  also  there  will 
be  but  one  triangle.  When  CB  is  less  than  the  perpendicular 
Cd,  the  arc  BB'  will  not  intersect  the  base  ABB',  and  in  that 
case,  no  triangle  can  be  formed,  or  it  will  be  impossible  to  fuU 
fil  the  conditions  of  the  problem. 

2.  Given  two  sides  of  a  triangle  50  and  40  respectively,  and 
the  angle  opposite  the  latter  equal  to  32" :  required  the  remain- 
ing parts  of  the  triangle. 

Ans,  If  the  angle  opposite  the  side  50  is  acute,  it  is  equal 
to  41028' 59";  the  third  angle  is  then  equal  to  1060  31'01", 
and  the  third  side  to  72.368.  If  the  angle  opposite  the  side 
50  is  obtuse,  it  is  equal  to  138°  31' 01",  the  third  angle  to 
9"  28'  59",  and  the  remaining  side  to  12.436. 

CASE    III. 

When  the  two  sides  and  their  included  angle  are  given. 

65.  Let  ABC  be  a  triangle  ;  AB,  j^ 

EC,  the  given  sides,  and  B  the  given 
angle. 

Since  B  is  known,  we  can  find  the 
sum  of  the  two  other  angles  :  for 

A+C=180'--B    and 
i{A+C)  =1(180' -B) 
We  next  find  half  the  difference  of  the  angles  A  and  C  by 
Theorem  II.     Viz. 

BC+BA  :  BC-BA  : :  tan  i{A+C)  :  tan  K«^-Q- 
in  which  we  consider  BC  greater  than  BA,  and  therefore  A 
is  greater  than  C ;  since  the  greater  angle  must  be  opposite 
the  greater  side. 

Having  found  half  the  difference  of  A  and  C,  by  adding  il 
to  the  half  sum  \{A-{-C),  we  obtain  the  greater  angle,  and  by 
subtractmg  it  from  half  the  sum,  we  obtain  the  less.     That  is 
^{A-{-  C)+\{A  -  C)  =A,  and 


PLANE    TRIGONOMETRY.  47 

Having  found  the  angles  A  and  C,  the  third  side  AC  may 
be  found  by  the  proportion. 

sin.^:  sinJ5  ::  BC:  AC. 

EXAMPLES. 

1.  In  the  triangle  .^^C,let  ^C=540,  .^5=450,  and  the 
included  angle  ^  =  80° :  required  the  remaining  parts. 

INSTRUMENTALLY. 

Draw  an  indefinite  right  line  BC  and  from  any  point, 
as  B,  lay  off  a  distance  5C  =  540.  At  B  make  the  angle 
CB A  =  80°:  draw  BA  and  make  the  distance  BA  =  ^50; 
draw  AC ;  then  will  ABC  be  the  required  triangle. 

BY    LOGARITHMS. 

J9C+ 5.^  =  540+450=990;    and   BC-BA  =  5i0-450=Q0. 
.y3+C=180°— S  =  180°— 80°=100°,  and  therefore, 
i(.^+C)  =1(100°)  =500 

To  find  ^(A-C), 
As  BC+BA     .     990        .     ar.  comp.       .       7.004365 

BC-BA         .90  .  .  .  .         1.954243 

:tani(.^+C)   .    50°        .  .         .         .      10.076187 

tanl(.^— C)   .      6M1'    .  .  .  .         9.034795 

Hence,  50°+6°  ll'  =  56*  11'=.^?;  and  50»-6»  ll'=430  49'  =  C. 

To  find  the  third  side  AC. 

As  sin  C      .     43°  49'       .       ar.  comp.         .  0.159672 

sin  J5      .      80° 9.993351 

:        AB  .450 2.653213 

AC  .      640.082         ....  2.806236 

2.  Given  two  sides  of  a  plane  triangle,  1686  and  960,  and 
their  included  angle  128°  04' :  required  the  other  parts. 

Ans.  Angles,  33° 34' 39";   18'»2l'21";  side  2400. 

CASE    IV. 

Having  given  the  three  sides  of  a  plane  triangle,  to  find  the 

angles. 

66.  Let  fall  a  perpendicular  from  the  angle  opposite  the 


48 


INTRODUCTION. 


greater  side,  dividing  the  given  triangle  into  two  right-angled 
triangles  :  then  find  the  difference  of  the  segments  of  the 
base  by  Theorem  III.  Half  this  difference  being  added  to 
half  the  base,  gives  the  greater  segment;  and,  being  sub- 
tracted from  half  the  base,  gives  the  less  segment.  Then, 
since,  the  greater  segment  belongs  to  the  right-angled  triangle 
having  the  greatest  hypothenuse,  we  have  the  sides  and  right 
angle  of  two  right-angled  triangles,  to  find  the  acute  an- 
gles. 

EXAMPLES. 


1.  The  sides  of  a  plane  trian- 
gle being  given;  viz.  BC  =  40^  AC 
=  34  and  AB=25 :  required  the 
angles. 


INSTRUMENTALLY. 


With  the  three  given  lines  as  sides  construct  a  triangle  as 
m  Problem  IX.  Then  measure  the  angles  of  the  triangle, 
either  with  the  protractor  or  scale  of  chords. 


BY    LOGARITHMS. 


As  BC:  dC+AB::  AC-AB:  CD-ED 

That  is,   40     :       59      : :      9     :      5l2i^=:i3.275 


40 


Then,         iHllMl!.=26.6375  =  CD 
2 


And 


40-13.275 


=  13.3625=52). 


In  the  triangle  DAC,  to  find  the  angle  DAC. 

As       AC  .  34      .         .       ar.  comp.     .  8.468521 

:         DC   .  26.6375        ....  1.425493 

::  sinD     .  90° lo.oooooo 

•   sin  D.^C  51°  34'  40"            .           .           .  9.894014 


PLANE    TRIGONOMETRY. 


49 


In  the  triangle  BAD,  to  find  the  angle  BAD. 
As        AB  .     .  25  .     .     ar.  comp.     .     .     .     8.602060 

BD    .       .    13.3625 1.125887 

:      sin  Z)  .      .   90<^ 10,000000 

sin  BAD    .       .    32^  18'  35" 9.727947 

Hence  900-l}^C  =  90°— 51°  34'  40"  =  380  25' 20"=C 
and        90^-BAD'=90^-Z2''  18'  35"^57°  41' 25"  =  5 
and  BAD-\-DAC  =  bl''  34'  40"+320  jg'  35"^83°  53'  15"=cy3. 

2.  In  a  triangle,  in  which  the  sides  are  4,  5  and  6,  what 
are  the  angles.  1 

Ans.   41°  24' 35";    55^46' 16";   and  820  49' 09"'. 

SOLUTION    OF    RIGHT-ANGLED    TRIANGLES. 

67.  The  unknown  parts  of  a  right-angled  triangle  may  be 
found  by  either  of  the  four  last  cases  :  or,  if  two  of  the  sides 
are  given,  by  means  of  the  property  that  the  square  of  the 
hypothenuse  is  equal  to  the  sum  of  the  squares  of  the  other 
t  vvo  sides.     Or  the  parts  may  be  found  by  Theorem  V. 

EXAMPLES. 

1.   In  a  right-angled  triangle  BAC, 
there  are  given  the  hypothenuse  BC 
=  250,  and    the   base   .^C=240  :    re-    C-^ 
quired  the  other  parts. 

To  find  the  angle  B. 

As     BC   .     .  250     .     .       ar.  comp.     .     .       7.602060 

AC    .      .    240 2.380211 

:   sin  ^   .     .  900 10.000000 

sin  B    .      .    73°  44'  23" 9.982271 

But  C  =  90«  — 5  =  900  — 73°  44'  23"  =  16°  15'  37"  : 

Or  C  might  be  found  from  the  proportion. 
As     CB   .     .  250     .     .     ar.  comp.      .     .       7.602060 

AC    .   .  240        2.380211 

R 10.000000 

cos  C  .   .  16"  15'  37" 9.982271 

4 


50 


INTRODUCTION. 

B 

fl.-^^"'^^           I 

A 

To  find  side  AB  by  Theorem  IV. 

4s  sin  A 

90**         ar.  comp. 

0.000000 

:  tan  C 

.       16°  15' 37" 

9.464889 

::    AC 

.240             .                        .           . 

2.380211 

:       AB 

70.0003 

• 

1.845100 

2.  In  a  right-angled  triangle  BAG,  there  are  given  AC- 
384,  and  J5=53''  08' :  required  the  remaining  parts. 

Ans.  AB  =  28'7,96;  50  =  479.979;   C  =  36«  52'. 


ELEMENTS    OF    SURVEYING. 


CHAPTER  1. 

Definitions  and  Introductory  Remarks, 

68.  Surveying,  in  its  most  extensive  signification,  com- 
prises all  the  operations  necessary  .for  finding, 

1st.  The  area  or  content  of  any  portion  of  the  surface  of 
the  earth  ; 

2d.  The  lengths  and  directions  of  the  bounding  lines; 
and 

3d.  The  accurate  delineation  of  the  whole  on  paper. 

69.  The  earth  being  spherical,  its  surface  is  curved,  and 
every  line  traced  on  its  surface  is  also  curved. 

If  large  portions  of  the  surface  are  to  be  measured,  such 
as  states  and  territories,  the  curvature  must  be  taken  into 
account ;  and  very  material  errors  will  arise  if  it  be  neglected. 
When  the  curvature  is  considered,  the  method  of  measure- 
ment and  computation  is  called  Geodesic  Surveying. 

The  radius  of  the  earth,  however,  being  large,  the  curva- 
ture of  its  surface  is  small,  and  when  the  measurement  is 
limited  to  small  portions  of  the  surface,  the  error  becomes 
insensible,  if  we  consider  the  surface  a  plane.  This  method 
of  measurement  and  computation,  is  called  Plane  Surveying, 
and  is  the  only  kind  that  will  be  treated  of  in  these  Elements. 

70.  If  at  any  point  of  the  surface  of  the  earth,  a  plane  be 
drawn  perpendicular  to  the  radius  passing  through  this  point, 
such  plane  is  tangent  to  the  surface,  and  is  called  a  horizontal 
plane.  All  planes  parallel  to  such  a  plane,  are  also  called 
horizontal  planes. 

71.  A  plane  which  is  perpendicular  to  a  horizontal  plane 
is  called  a  vertical  plane. 


52  ELEMENTS    OF    SURVEYING. 

72.  All  lines  of  a  horizontal  plane,  and  all  lines  which  are 
parallel  to  it,   are   called  horizontal  lines. 

73.  Lines  which  are  perpendicular  to  a  horizontal  plane, 
are  called  vertical  lines ;  and  all  lines  which  are  inclined  to  it, 
are  called  oblique  lines. 

Thus,   *^B   and   DC  are    hori-    j)^ _^^ 

zontal  lines  ;  BC  and  JID  are  ver- 
tical lines  ;  and  AC  and  BD  are 
oblique  lines. 

74.  The  horizontal  distance  be-  -,,«^^^^^=^^ 
tween  two  points,  is  the  horizontal  line  intercepted  between 
the  two  vertical  lines  passing  through  those  points.  Thus, 
DC  or  AB  is  the  horizontal  distance  between  the  two  points 
A  and   C,  or  the  points  B  and  D. 

75.  A  horizontal  angle  is  one  whose  sides  are  horizontal ;  its 
plane  is  also  horizontal. 

A  horizontal  angle  may  also  be  defined  to  be,  the  angle 
included  between  two  vertical  planes  passing  through  the  angular 
point,  and  the  two  objects  which  subtend  the  angle. 

76.  A  vertical  angle  is  one,  the  plane  of  whose  sides  is 
vertical. 

77.  An  angle  of  elevation,  is  a  vertical  angle  having  one  of 
its  sides  horizontal,  and  the  inclined  side  above  the  horizontal 
side. 

Thus,  in  the  last  figure,  BAC  is  the  angle  of  elevation 
from  A  to  C 

78.  An  angle  of  depression,  is  a  vertical  angle  having  one 
of  its  sides  horizontal,  and  the  inclined  side  under  the  hori- 
zontal side.  Thus,  DCA  is  the  angle  of  depression  from 
C  to  A. 

79.  An  oblique  angle  is  one,  the  plane  of  whose  sides  is 
oblique  t6  the  horizontal  plane. 

80.  All  lines,  which  can  be  the  object  of  measurement, 
must  belong  to  one  of  the  classes  above  named,  viz. : 

1st.  Horizontal  lines : 

2d.  Vertical  lines : 

3d.  Oblique  lines. 

All  the  angles  may  also  be  divided  into  three  classes,  viz. : 

1st.  Horizontal  angles : 


MEASUREMENT    OF    LINES. 


'?d.  Vertical   angles ;  which   may  be    again   divided  into 
angles  of  elevation  and  angles  of  depression  :  and 
3d.  Oblique  angles. 


CHAPTER  II. 

Of  the  measurement  and  calculation  of  Lanes  and  Angles. 

81.  It  has  been  shown  (Art.  62),  that  at  least  one  side  and 
two  of  the  other  parts  of  a  plane  triangle  must  be  given  or 
known,  before  the  remaining  parts  can  be  found  by  calculation. 

When,  therefore,  distances  are  to  be  found,  by  trigonomet- 
rical calculations,  two  things  are  necessary. 

1st.  To  measure  certain  lines  on  the  ground;  and  also,  as 
many  angles  as  may  be  necessary  to  render  at  least  three 
parts  of  every  triangle  known  :  and 

2d.  To  calculate,  by  trigonometry,  the  other  sides  and 
angles  that  may  be  required.  Our  attention,  then,  is  di- 
rected, 

1st.  To  the  measurement  of  lines  ; 

2d.  To  the  measurement  of  angles  ;  and 

3d.  To  the  calculations  for  the  unknown  and  required 
parts. 

82.  Any  tape,  rod,  or  chain,  on  which  equal  parts  are 
marked,  may  be  used  as  a  measure  ;  and  one  of  the  equal 
parts  into  which  the  measure  is  divided,  is  called  the  unit  of 
the  measure.  The  unit  of  a  measure  may  be  a  foot,  a  yard, 
a  rod,  or  any  other  ascertained  distance. 

83.  The  measure  in  general  use,  is  a  chain  of  four  rods  or 
sixty-six  feet  in  length  ;  it  is  called  Gunter's  chain,  from  the 
name  of  the  inventor.  This  chain  is  composed  of  100  links. 
Every  tenth  link  from  either  end,  is  marked  by  a  small 
attached  brass  plate,  which  is  notched,  to  designate  its  num- 
ber from  the  end.  The  division  of  the  chain  into  lOo  equal 
parts,  is  a  very  convenient  one,  since  the  divisions  or  links, 
are  decimals  of  the  whole  chain,  and  in  the  calculations  may 
be  treated  as  such. 


54  ELEMENTS    OF    SURVEYING. 

TABLE. 

1   chain  =  4  rods  =  66  feet  =  792  inches=  100  links 
Hence,  l    link   is  equal    to    7.92  inches. 
80   chains  =  320  rods  =  l  mile. 
40   chains  =  I  mile. 
20   chains  =  i  mile. 

84.  Besides  the  chain,  there  are  wanted  for  measuring,  ten 
marking  pins,  which  should  be  of  iron,  about  ten  inches  in 
length  and  an  eighth  of  an  inch  in  thickness.  These  pins 
should  be  strung  upon  an  iron  ring,  and  this  ring  should  be 
attached  to  a  belt,  to  be  passed  over  the  right  shoulder, 
suspending  the  pins  at  the  left  side.  Two  staves  are  also 
required.  They  should  be  about  six  feet  in  length,  and  have 
a  spike  in  the  lower  end  to  aid  in  holding  them  firmly,  and  a 
horizontal  strip  of  iron  to  prevent  the  chain  from  slipping  off; 
these  staves  are  to  be  passed  through  the  rings  at  the  ends  of 
the  chain. 

TO    MEASURE    A    HORIZONTAL    LINE. 

85.  At  the  point  where  the  measurement  is  to  be  begun, 
place  in  a  vertical  position,  a  signal  staff,  having  a  small  flag 
attached  to  its  upper  extremity  ;  and  place  another  at  the 
point  where  the  measurement  is  to  be  terminated.  These  two 
points  are  generally  called  stations. 

Having  passed  the  staves  through  the  rings  of  the  chain, 
let  the  ten  marking  pins  and  one  end  of  the  chain  be  taken  by 
the  person  who  is  to  go  forward,  and  who  is  called  the  leader, 
and  let  him  plant  the  staff  as  nearly  as  possible  in  the  direc- 
tion of  the  stations.  Then,  taking  the  staflT  in  his  right  hand, 
let  him  stand  off  at  arm's  length,  so  that  the  person  at  the 
other  end  of  the  chain  can  align  it  exactly  with  the  stations  : 
when  the  alignment  is  made,  let  the  chain  be  stretched  and  a 
marking  pin  placed  ;  then  measvire  a  second  chain  in  the 
same  manner,  and  so  on,  until  all  the  marking  pins  shall  have 
been  placed.  When  the  marking  pins  are  exhausted,  a  note 
should  be  made,  that  ten  chains  have  been  measured  ;  alter 
which,  the  marking  pins  are  to  be  returned  to  the  leader,  and 
the  measurement  continued  as  before,  until  the  whole  distance 
is  passed  over 


OF    THE    THEODOLITE. 


55 


Great,  care  must  be  taken  to  keep  the  chain  horizontal,  and 
if  the  acclivity  or  decUvity  of  the  ground  be  too  great  to 
admit  of  measuring  a  whole  chain  at  a  time,  a  part  of  a 
chain  only  should  be  measured :  the  sum  of  all  the  horizon- 
tal lines  so  measured,  is  evidently  the  horizontal  distance 
between  the  stations. 

For  example,  in  measuring  the 
horizontal  distance  between  A 
and  C,  we  first  place  a  staff  at  Jl 
and  another  at  6,  in  the  direction 
towards  C.  Then  slide  up  the 
chain  on  the  staff  at  A  until  it 
becomes  horizontal,  and  note  the 
distance  ah.  Then  remove  the 
staves  and  place  them  at  h  and  d : 
make  the  chain  horizontal,  and  note  the  distance  cd.  Mea- 
sure in  the  same  manner  the  line  fC ;  and  the  sum  of  the 
horizontal  lines  ah,  cd  and  /C,  will  be  equal  to  AB,  the 
horizontal  distance  between  Jl  and  C. 

86.  We  come  now  to  the  measurement  of  angles,  and  for 
this  purpose  several  instruments  are  used.  The  one,  however, 
which  affords  the  most  accurate  results,  and  which  indeed  can 
alone  be  relied  on  for  nice  or  extensive  operations,  is  called  a 
Theodolite.  This  instrument  only  will  be  described  at  present ; 
others  will  be  subsequently  explained. 


OF    THE    THEODOLITE. 


PL  1.  The  theodolite  is  an  instrument  used  to  measure 
horizontal  and  vertical  angles.  It  is  usually  placed  on  a 
tripod  ABC,  which  enters  by  means  of  a  screw  the  lower 
horizontal  plate  DE,  and  becomes  firmly  attached  to  the  body 
of  the  instrument.  Through  the  horizontal  plate  DE,  four 
small  hollow  cylinders  are  inserted,  which  receive  four  screws 
with  milled  heads,  that  work  against  a  second  horizontal 
plate,  FG.  The  upper  side  of  the  plate  DE  terminates  in  a 
curved  surface,  which  encompasses  a  ball,  that  is  nearly  a 
semi-sphere,  with  the  plane  of  its  base  horizontal.  This  ball, 
which  is  hollow,  is  firmly  connected  with  the  smaller  base  of 
a  hollow  conic  frustrum,  that  passes  through  the  curved  part 


5G  ELEMENTS    OF    SURVEYING, 

of  the  plate  DE,  and  screws  firmly  into  the  curved  part  of  tVie 
second  horizontal  plate    FG. 

A  hollow  conic  spindle  passes  through  the  middle  of  the 
ball,  and  the  hollow  frustrum  with  which  it  is  connected.  To 
this  spindle,  a  third  horizontal  and  circular  plate  HI,  caUed 
the  limb  of  the  instrument,  is  permanently  attached.  Within 
this  spindle,  and  concentric  with  it,  there  is  a  second  spindle, 
called  the  inner,  or  solid  spindle,  To  this  latter,  is  united  a 
thin  circular  plate,  called  the  vernier  plate,  which  rests  on  the 
limb  of  the  instrument,  and  supports  the  upper  frame-work. 
The  two  spindles  terminate  at  the  base  of  the  spherical  ball, 
where  a  small  screw  enters  the  inner  one,  and  presses  a 
washer  against  the  other,  and  the  base  of  the  ball.  On  the 
upper  surface  of  the  plate  FG,  rests  a  clamp  which  goes  round 
the  outer  spindle,  and  which  being  compressed  by  the  clamp- 
screw  K,  is  made  fast  to  it.  This  clamp  is  thus  connected  with 
the  plate  FG.  A  small  cylinder  a,  is  fastened  to  the  plate  FG: 
through  this  cylinder  a  thumb-screw  L  passes,  and  works 
into  a  small  cylinder  b,  connected  with  the  clamp.  The 
cylinders  b  and  a,  admit  of  a  motion  round  their  axes,  to 
relieve  the  screw  L  of  the  pressure  which  would  otherwise  be 
occasioned  by  working  it. 

Directly  above  the  clamp,  is  the  lower  telescope  MJST 
This  telescope  is  connected  with  a  hollow  cylinder,  which  is 
worked  freely  round  the  outer  spindle,  by  the  thumb-screw  P 
having  a  pinion  working  into  a  concealed  cog-wheel,  that  is 
permanently  fastened  to  the  limb  of  the  instrument.  By 
means  of  a  clamp-screw  Q,  the  telescope  is  made  fast  to  the 
limb,  when  it  will  have  a  common  motion  with  the  limb  and 
outer  spindle. 

The  circular  edge  of  the  limb  is  chamfered,  and  is  generally 
made  of  silver,  and  on  this  circle  the  graduation  for  horizontal 
angles  is  made.  In  the  instrument  described,  the  circle  is  cut 
into  degrees  and  half  degrees  ;  the  degre\es  are  numbered  from 
0  to  360. 

On  the  circular  edge  of  the  vernier  plate,  is  a  small  space 
of  silver,  called  a  vernier ;  this  space  is  divided  into  30  equal 
parts,  and  numbered  from  the  line  marked  0  to  the  left. 

There  are  two  levels  attached  to  the  vernier  plate,  at  right 
angles  to  each  other,  by  small  adjusting  screws;  one  of  them 
is  seen  in  the  figure.     The  vernier  plate  turns  freely  around 


OF    THE    THEODOLITE.  57 

with  the  inner  spindle.  It  is  made  fast  to  the  limb  of  the 
instrument  by  the  damp-screw  S ;  after  which  the  smaller 
motions  are  made  by  the  tangent-screw    T. 

There  is  a  compass  on  the  vernier  plate,  that  is  concentric 
with  it,  the  use  of  which  will  be  explained  under  the  head 
compass. 

The  frame-work  which  supports  the  horizontal  axis  of  the 
vertical  semicircle  UV  and  the  upper  telescope,  with  its 
attached  level,  rests  on  the  vernier  plate,  to  which  it  is  made 
fast  by  three  adjusting  screws,  placed  at  the  angular  points  of 
an  equilateral  triangle.  The  vertical  semicircle  UV,  is  called 
the  vertical  limb ;  its  motions  are  governed  by  the  thumb-screw 
Z,  which  has  a  pinion,  that  works  with  the  teeth  of  the  ver- 
tical limb.  On  the  face  of  the  vertical  limb,  opposite  the 
thumb-screw  Z,  the  limb  is  divided  into  degrees  and  half 
degrees  :  the  degrees  are  numbered  both  ways  from  the  line 
marked  0.  There  is  a  small  plate  resting  against  the  gradu- 
ated face  of  the  vertical  limb,  called  the  vernier ;  it  is  divided 
into  30  equal  parts,  and  the  middle  line  is  designated  by  0. 

On  the  other  face  of  the  vertical  limb,  are  two  ranges  of 
divisions,  commencing  at  the  0  point,  and  extending  each  way 
45".  The  one  shows  the  vertical  distance  of  any  object  to 
which  the  upper  telescope  is  directed,  above  or  below  the 
place  of  the  instrument,  in  lOOth  parts  of  the  horizontal 
distance  :  the  other,  the  difference  between  the  hj'^pothenusal 
and  base  lines  :  the  hypothenuse  being  supposed  to  be  divided 
into  one  hundred  equal. parts:  therefore,  by  mere  inspection, 
we  can  ascertain  the  number  of  links,  which  must  be  sub- 
tracted from  every  chain  of  an  oblique  line,  to  reduce  it  to 
a  true  horizontal  distance. 

The  supports  of  the  upper  telescope  are  called  the  wyes, 
and  designated  Y^s.  Two  loops,  turning  on  hinges,  pass  over 
the  telescope,  and  are  made  fast  by  the  pins  c  and  d;  these 
loops  confine  the  telescope  in  the  Y^s.  By  withdrawing  the 
pins,  and  turning  the  loops  on  their  hinges,  the  telescope  may 
be  removed  for  the  purpose  of  being  reversed  in  position  ;  and 
in  both  situations,  the  telescope  can  be  revolved  in  the  F's 
about  its  axis. 

In  the  telescopes  attached  to  the  theodolite,  are  two  prin- 
cipal lenses,  one  a,t  each  end.     The  one  at  the  end  Avhere 


58  ELEMENTS    OF    SURVEYING. 

llic  eye  is  placed,  is  called  the  eyeglass,  the  other  the  object 
glass. 

In  order  that  the  axis  of  the  telescope  may  be  directed  to 
an  object  with  precision,  two  spider's  lines,  or  small  hairs,  are 
fixed  at  right  angles  to  each  other,  and  placed  within  the 
barrel  of  the  telescope,  and  at  the  focus  of  the  eyeglass. 
The  vertical  hair  is  moved  by  two  small  horizontal  screws, 
one  of  which,  /,  is  seen  in  the  figure  ;  and  the  horizontal 
hair,  by  two  vertical  screws,  g  and  h. 

Before  using  the  theodolite,  it  must  be  properly  adjusted. 
The  adjustment  consists  in  bringing  the  different  parts  to  their 
proper  places. 

The  line  of  collimation,  is  the  axis  of  the  telescope.  With 
this  axis,  the  line  drawn  through  the  centre  of  the  eyeglass, 
and  the  intersection  of  the  spider's  hues,  ought  to  coincide. 

First  adjustment.  The  first  adjustment  regards  the  line 
of  coUimation:  it  is,  to  fix  the  intersection  of  the  spider^s  lines  m 
the  axis  of  the  telescope. 

Having  screwed  the  tripod  to  the  instrument,  extend  the 
legs,  and  place  them  firmly.  Then  loosen  the  clamp-screw  *S 
of  the  vernier  plate,  and  direct  the  telescope  to  a  small,  well- 
defined,  and  distant  object.  By  means  of  a  small  pin  i,  on 
the  under  side  of  the  telescope,  slide  the  eyeglass  till  the 
spider's  lines  are  seen  distinctly  ;  then  with  the  thumb-screw 
X,  which  forces  out  and  draws  in,  the  object  glass,  adjust  this 
glass  to  its  proper  focus,  when  the  object,  as  well  as  the 
spider's  lines,  will  be  distinctly  seen:  after  which,  by  the 
tangent-screw  T  and  the  thumb-screw  Z,  bring  the  inter- 
section of  the  spider's  lines  exactly  upon  a  well-defined  point 
of  the  object. 

Having  done  this,  revolve  the  telescope  in  the  Y^s,  half  round, 
when  the  attached  level  mn,  will  come  to  the  upper  side. 
See,  in  this  position,  if  the  horizontal  hair  appears  above  oi 
below  the  point,  and  in  either  case,  loosen  one,  and  tighten 
the  other,  of  the  two  screws  that  work  the  horizontal  hair, 
till  the  horizontal  hair  has  been  carried  over  half  the  space 
between  its  last  position  and  the  observed  point.  Carry  the 
telescope  back  to  its  place ;  direct  again  the  intersection  of  the 
spider's  lines,  to  the  point,  and  repeat  the  operation  till  the 
horizontal  hair  neither  ascends  nor  descends,  while  the  tele- 


OF    THE    THEODOLITE.  59 

scope  is  revolved.     A  siHiilar  process  will  arrange  the  vertical 
hair,  and  the  line  of  colliniation  is  then  adjusted. 

Second  adjustment. — To  make  the  axis  of  the  attached 
level  of  the  upper  telescope,  parallel  to  the  line  of  collimation. 

Turn  the  vernier  plate,  till  the  telescope  comes  directly  over 
two  of  the  levelling  screws,  between  the  plates  DE  and  FG. 
Turn  these  screws  contrary  ways,  keeping  them  firm  against 
the  plate  FG,  till  the  bubble  of  the  level  mn,  stands  at  the 
middle  of  the  tube.  Then,  open  the  loops,  and  reverse  the 
telescope.  If  the  bubble  still  stands  in  the  middle  of  the 
tube,  the  axis  of  the  tube  is  horizontal ;  but  if  not,  it  is  in- 
clined, the  bubble  being  at  the  elevated  end.  In  that  case, 
by  means  of  the  small  vertical  screws  m  and  n,  at  the  ends 
of  the  level,  raise  the  depressed  end,  or  depress  the  elevated 
one,  half  the  inclination  ;  and  then,  with  the  levelling  screws, 
bring  the  level  into  a  horizontal  position.  Reverse  the  tele- 
scope in  the  F's,  and  make  the  same  correction  again  ;  and  so 
on,  until  the  bubble  stands  in  the  middle  of  the  tube,  in  both 
positions  of  the  telescope  :  the  axis  of  the  level  is  then  hori- 
zontal. Let  the  telescope  be  now  revolved  in  the  Y^s.  If  the 
bubble  continue  in  the  middle  of  the  tube,  the  axis  of  the 
level  is  not  only  horizontal,  but  also  parallel  to  rh  •  tine  of 
collimation.  If,  however,  the  bubble  recede  from  its  centre, 
the  axis  of  the  level  is  inclined  to  the  line  of  collimation,  and 
must  be  made  parallel  to  it  by  means  of  two  small  screws, 
(one  of  which  is  seen  at  p,)  which  work  horizontally.  By 
loosening  one  of  them,  and  tightening  the  other,  the  level  is 
soon  brought  parallel  to  the  line  of  collimation,  and  tiien,  if  the 
telescope  be  revolved  in  the  F'5,  the  bubble  will  continue  in 
the  middle  of  the  tube. 

It  is  difficult  to  make  the  first  part  of  this'  adjustment,  while 
the  axis  of  the  level  is  considerably  inclined  to  the  liiic  of 
collimation  ;  for,  if  the  level  were  truly  horizontal  in  one 
position  of  the  telescope,  when  the  telescope  is  reversed,  the 
bubble  would  not  stand  in  the  middle  of  the  tube,  except 
in  one  position  of  the  level.  This  suggests  the  necessity  of 
making  the  first  part  of  the  adjustment  with  tolerable  accu- 
racy; then,  having  made  the  second  with  care,  let  the  first 
be  again  examined,  and  proceed  thus  till  the  adjustment  is 
completed 


60  ELEMENTS    OF    SURVEYING. 

Third  adjustment. — To  make  the  limb  of  the  instrument 
horizontal,  or,  to  make  the  common  axis  of  the  limb  and  vernier 
plate  truly  vertical. 

This  adjustment  is  effected,  partly  by  the  levelling  screws, 
and  partly  by  the  thumb-screw  Z.  Turn  the  vernier  plate, 
until  the  upper  telescope  comes  directly  over  two  of  the  level- 
ling screws,  then  turn  them  contrary  ways,  till  the  upper  tel- 
escope is  horizontal ;  after  which,  turn  the  vernier  plate  180°, 
and  if  the  bubble  of  the  level  remains  in  the  middle  of  the 
tube,  one  line  of  the  limb  is  horizontal.  But  if  the  bubble 
recede  from  the  centre  of  the  level,  raise  the  lower,  or  depress 
the  upper  end,  one-half  by  the  levelling  screws,  the  other  by 
the  thumb-screw  Z,  till  it  is  brought  into  a  horizontal  posi- 
tion. Turn  the  vernier  plate  again  180°,  and  if  the  level 
be  not  then  horizontal,  make  it  so,  by  dividing  the  error  as 
before,  and  repeat  the  operation  until  the  line  of  the  limb 
is  truly  horizontal.  Then  turn  the  vernier  plate  90",  and 
level  as  before.  The  limb  ought  now  to  be  truly  horizontal ; 
but  lest  the  first  horizontal  line  may  have  been  changed,  in 
obtaining  the  second,  it  is  well  to  bring  the  telescope  and 
level  two  or  three  times  over  the  levelling  screws,  until  an 
entire  revolution  can  be  made  without  displacing  the  bubble 
from  the  middle  of  the  tube.  As  this  can  only  be  the  case 
when  tlie  level  revolves  around  a  vertical  line,  it  follows  that 
the  limb  will  then  be  horizontal,  and  the  axis  of  the  instru- 
ment vertical. 

This  adjustment  being  completed,  the  levels  of  the  vernier 
plate  are  readily  made  parallel  with  it,  by  means  of  the  small 
screws  at  their  extremities.  The  three  levels  being  then  hori- 
zontal, and  perpendicular  in  direction  to  the  axis  of  the  theo- 
dolite, the  bubbles  will  retain  the  middle  places  in  tlie  tubes, 
during  an  entire  revolution  of  the  vernier  plate,  or  of  the 
limb  and  vernier  plate  together. 

But  the  levels  of  the  vernier  plate  may  be  made  parallel 
with  the  limb,  and  the  limb  made  truly  horizontal,  without 
the  aid  of  the  upper  level. 

Let  the  upper  telescope  be  placed  directly  over  two  of  the 
levelling  screws.  One  of  the  levels  of  the  vernier  plate  will 
then  be  parallel  to  the  line  of  these  two  screws,  and  the  other 
level  will  be  at  right  angles  to  this  line,  or  parallel  to  the  line 
of  the  other  two  levelling  screws.     In  thi-s  situation,  let  the 


OF    THE    THEODOLITE.  61 

levels  be  made  horizontal,  by  means  of  the  levelling  screws. 
Then  turn  the  vernier  plate  180°,  and  if  they  both  continue 
horizontal,  the  limb  is  truly  level.  But  if  both,  or  either  of 
them,  be  changed  from  a  horizontal  position,  let  the  error 
be  divided  between  the  level  and  the  limb  ;  and  repeat  the 
operation  until  the  levels  will  continue  horizontal  during  au 
entire  revolution  :  the  limb  is  then  horizontal,  and  the  axis 
of  the  instrument  truly  vertical. 

Fourth  adjustment. — To  make  the  axis  of  the  vertical 
limb  truly  horizontal,  or  perpendicular  to  the  axis  of  the  instru- 
ment. 

Bring  the  intersection  of  the  spider's  lines  of  the  upper 
telescope  upon  a  plumb  line,  or  any  well-defined  vertical 
object,  and  move  the  telescope  with  the  thumb-screw  Z :  if 
the  intersection  of  the  spider's  lines  continue  on  the  vertical 
line,  the  axis  is  horizontal. 

Or,  the  adjustment  may  be  effected  thus:  Direct  the  inter- 
section of  the  spider's  lines  to  a  well-defined  point  that  is 
considerably  elevated :  then  turn  the  vertical  limb,  until  the 
axis  of  the  telescope  rests  on  some  other  well-defined  point, 
upon  or  near  the  ground :  reverse  the  telescope,  and  turn  the 
vernier  plate  180°;  now,  if  in  elevating  and  depressing  the 
telescope,  the  line  of  collimation  passes  through  the  two 
points  before  noted,  the  axis  is  horizontal.  If  it  be  found,  by 
either  of  the  above  methods,  that  the  axis  is  not  horizontal,  it 
must  be  made  so  by  the  screws  which  fasten  the  frame-work 
to  the  vernier  plate. 

There  are  two  important  lines  of  the  theodolite,  the  positions 
of  which  are  determined  with  great  care  by  the  maker,  and 
fixed  permanently.  First,  the  axis  of  the  instrument  is  placed 
exactly  at  right  angles  with  the  limb  and  vernier  plate  ;  and 
unless  it  have  this  position,  the  vernier  plate  will  not  revolve 
at  right  angles  to  the  axis,  as  explained  in  the  third  adjust- 
ment. Secondly,  the  line  of  collimation  of  the  upper  telescope, 
is  fixed  at  right  angles  to  the  horizontal  axis  of  the  vertical 
limb.  We  can  ascertain  whether  these  last  lines  are  truly  at 
right  angles,  by  directing  the  intersection  of  the  spider's  lines 
to  a  well-defined  point ;  then  removing  the  caps  which  con- 
fine the  horizontal  axis  in  its  supports,  and  reversing  the 
axis :  if  the  intersection  of  the  spider's  lines  can  be  made  to 


bZ  ELEMENTS    OF    SURVEYING. 

cover  exactly  the  same  point,  without  moving  the  vernier 
plate,  the  line  of  collimation  is  at  right  angles  to  the  axis. 

If  the  theodolite  be  so  constructed  that  either  of  the  Y^s 
admits  of  being  moved  laterally,  so  as  to  vary  the  angle  be- 
tween the  horizontal  axis  and  the  line  of  collimation,  these 
lines  may  be  adjusted  at  right  angles  to  each  other,  if  they 
have  not  been  so  placed  by  the  maker. 

The  lower  telescope  being  used  merely  as  a  guard,  requires 
no  adjustment,  although  it  is  better  to  make  the  axis,  about 
which  its  vertical  motions  are  performed,  horizontal,  or  per- 
pendicular to  the  axis  of  the  instrument ;  and  this  is  easily 
effected  by  means  of  the  two  small  screws  k  and  /,  which 
work  into  the  slide  A',  that  is  connected  with  the  horizontal 
axis. 

The  theodolite  being  properly  adjusted,  the  particular  uses 
of  its  several  parts,  and  the  manner  of  measuring  angles,  are 
now  to  be  explained. 

There  are  two  verniers  on  the  vernier  plate,  and  the  points 
of  them  marked  0,  are  at  the  opposite  extremities  of  a  diam- 
eter ;  which  diameter  is  the  intersection  of  a  vertical  plane 
passed  through  the  line  of  collimation,  with  the  vernier  plate. 
It  is  important  to  ascertain  the  exact  arc  intercepted  on  the 
limb,  between  its  0  point,  (this  being  the  point  from  which  the 
degrees  are  numbered),  and  this  diameter,  for  any  position 
which  it  may  assume.  The  limb  being  divided  to  half  degrees, 
if  we  had  only  the  line  marked  0  on  the  vernier,  to  guide 
us,  the  place  of  the  extremity  of  the  diameter  could  only  be 
ascertained  with  certainty  to  half  degrees,  as  there  would  be 
no  means  of  determining  its  exact  position,  when  it  falls 
between  the  lines  of  division  on  the  limb.  But  the  vernier 
affords  results  much  more  accurate.  As  most  instruments 
for  the  measurement  of  angles  have  verniers,  it  will  perhaps 
be  best  to  explain  their  use  generally. 

First. — Count  carefully  the  number  of  spaces  into  which 
the  vernier  is  divided  :  this  number  is  one  less  than  the  num- 
ber of  lines  which  limit  them. 

Secondly. — Turn  the  vernier  till  the  line  at  one  extremity 
coincides  with  a  line  of  the  graduated  limb,,  when  the  line 
at  the  other  extremity  will  also  coincide  with  a  line  of  the 
graduated  limb  ;  for  the  sum  of  the  spaces  on  the  vernier  ia 


OF    THE    THEODOLITE.  63 

always  exactly  equal  to  a  given  number  of  spaces  on  the 
limb ;  then  count  the  number  of  spaces  on  the  limb  which 
the  vernier  covers. 

Thirdly. — Examine  the  limb  of  the  instrument,  and  ascer 
tain  into  what  parts  of  a  degree  it  is  divided,  and  express  one 
of  those  equal  parts  in  minutes. 

Let  X  represent  the  value  of  one  of  the  equal  spaces  of  the 
vernier,  and  n  their  number;  then  nx  will  be  equal  to  the 
space  covered  by  the  vernier.  Let  a  represent  the  smallest 
equal  space  into  which  the  limb  is  divided,  and  m  the  number 
of  such  spaces  covered  by  the  vernier  ;  then  ma  will  be  equal 
to  the  space  on  the  limb  covered  by  the  vernier,  which  is  also 
equal  to  nx. 

The  equation  nx=ma  is  called  the  equation  of  the  instru- 
ment.    In  this  equation, 

ma 
x=—  ; 
n 

m,  a,  and  n,  being  known,  x  can  be  found,  as  also  the  differ- 
ence between  a  and  x,  which  we  shall  show  presently,  to  be 
the  smallest  certain  count  of  the  instrument. 

In  the  theodolite,  m  =  29,  a==30'  andn=30  hence  ; 

x  =  'l^^  =  20'; 
30 

and     a—x  =  30'  —  29'  =  l', 

the  excess  of  a  space  on  the  limb  over  a  space  on  the  vernier. 

Fig.  2.  Let  AB  be  a  portion  of  the  limb  of  the  instru- 
ment, and  CED  the  vernier  in  one  of  its  positions,  its  0 
point  coinciding  with  the  line  marked  10  on  the  limb.  Now, 
since  each  space  of  the  vernier  is  less  by  l'  than  each  space 
of  the  limb,  the  first  line  on  the  left  of  0,  will  be  l'  to  ihe 
right  of  the  first  line  on  the  left  of  the  1 0  on  the  limb  ;  and  if 
the  vernier  plate  be  moved  l'  towards  the  left,  these  lines  will 
coincide,  and  the  second  line  from  0  will  then  be  1'  to  the  right 
of  the  second  line  from  10 ;  if  the  vernier  be  moved  another 
minute,  these  last  lines  will  coincide.  The  vernier  would  then 
show   100  2'. 

If  the  vernier  plate  be  turned  still  farther,  till  the  thirrl, 
fourth,  fifth,  &c.  lines  coincide,  it  is  plain,  that  the  0  point  of 
the  vernier  will  have  passed  the  line  10  on  the  limb,  by  as 
many  minutes  as  there  are  lines  of  the  vernier  which  shall 
have   coincided  with  Imes  of  the  limb.     When  the  last  Ime 


64  ELEMENTS    OF    SURVEYING. 

of  the  vernier  coincides  with  a  line  of  the  limb,  the  vernier 
will  have  been  moved  30',  or  half  a  degree;  and  the  0  point 
will  at  the  same  time  coincide  with  a  line  of  the  limb,  and 
show  10°  30'. 

The  general  rule  for  reading  the  angle  for  any  position  of 
the  vernier  may  now  be  stated. 

When  the  0  line  of  the  vernier  coincides  with  a  line  of  the 
limb,  the  arc  is  easily  read  from  the  limb ;  but  when  it  falls 
between  two  lines,  note  the  degrees  and  half  degrees  up  to 
the  line  on  the  right ;  then  pass  along  the  vernier  till  a  line  is 
found  coinciding  with  a  line  of  the  limb  :  the  number  of  this 
line  from  the  0  point,  indicates  the  minutes  which  are  to  be 
added  to  the  degrees  and  half  degrees,  for  the  entire  angle. 

To  measure  a  horizontal  angle  with  the  theodolite. 

Place  the  axis  of  the  instrument  directly  over  the  point  at 
which  the  angle  is  to  be  measured.  This  is  effected  by  means 
of  a  plumb,  suspended  from  the  plate  which  forms  the  upper 
end  of  the  tripod. 

Having  made  the  limb  truly  level,  place  the  0  of  the  ver- 
nier at  0  or  3600  of  the  Umb,  and  fasten  the  clamp-screw  S 
of  the  vernier  plate.  Then,  facing  in  the  direction  between 
the  lines  which  subtend  the  angle  to  be  measured,  turn  the 
limb  with  the  outer  spindle,  until  the  telescope  points  to  the 
object  on  the  left,  very  nearly.  Clamp  the  limb  with  the 
ciamp-screw  K,  and  by  means  of  the  tangent  screws  L  and 
Z,  bring  the  intersection  of  the  spider's  lines  to  coincide 
exactly  with  the  object. 

Having  loosened  the  clamp-screw  Q  of  the  lower  telescope 
MJ^,  direct  it  with  the  thumb-screw  P  to  the  same  object  at 
which  the  upper  telescope  is  directed  ;  then  tighten  the  clamp- 
screw  Q.  This  being  done,  loosen  the  clamp-screw  /S  of  the 
vei  niei  plate,  and  direct  the  telescope  to  the  other  object :  the 
arc  imssed  over  by  the  0  point  of  the  vernier,  is  the  measure 
of  the  angle  sought. 

The  lower  telescope  having  been  made  fast  to  the  limb, 
will  indicate  any  change  of  its  position,  should  any  have  taken 
place  ;  and,  as  the  accuracy  of  the  measurements  depends  on 
the  fixedness  of  the  limb,  the  lower  telescope  ought  to  be 
often  examined,  and  if  its  position  has  been  altered,  the  limb 
must  be  brought  back  to  its  place  by  the  tangent-screw  L. 


OP    THE    THEODOLITE.  65 

It  is  not  necessary  to  place  the  0  point  of  the  vernier  at  the 
0  point  of  the  limb,  previously  to  commencing  the  measure- 
ment of  the  angle,  but  convenient  merely  ;  for,  whatever  be 
the  position  of  this  point  on  the  limb,  it  is  evident  that  the  arc 
which  it  passes  over  is  the  true  measure  of  the  horizontal 
angle.  If,  therefore,  its  place  be  carefully  noted  for  the  first 
direction,  and  also  for  the  second,  the  difference  of  these  two 
readings  will  be  the  true  angle,  unless  the  vernier  shall  have 
passed  the  0  point  of  the  limb,  in  which  case  the  greater  read- 
ing must  be  subtracted  from  360",  and  the  remainder  added 
to  the  less. 

To  measure  a  vertical  angle. 

In  Fig.  3,  AB  represents  a  view  of  the  vertical  limb  oppo- 
site the  thumb-screw  Z,  and  ED  is  the  vernier.  The  0 
point  of  this  vernier  is  at  tlie  middle  division  line,  and  fifteen 
spaces  lie  on  each  side  of  it.  The  relation  which  exists  be- 
tween the  spaces  on  the  limb  and  those  of  the  vernier,  is  the 
same  as  that  between  the  divisions  of  the  horizontal  limb  and 
its  vernier,  and  the  degrees  and  half  degrees  are  read  in  the 
same  manner  :  the  angles  of  elevation  being  read  from  the  0 
of  the  limb  towards  the  right,  and  those  of  depression  in  the 
contrary  direction.  For  the  minutes,  we  pass  along  the  ver- 
nier in  tlie  direction  in  which  the  degrees  are  counted,  and  if 
we  reach  the  extreme  line,  which  is  the  fifteenth,  without 
finding  a  coincidence,  we  must  then  pass  to  the  other  extre- 
mity of  the  vernier,  and  look  along  towards  the  0  point  till 
two  lines  are  found  to  coincide  :  the  number  of  the  line  on  the 
vernier  will  show  the  minutes.  The  lines  of  the  vernier  are 
numbered  both  ways  from  the  0  point,  and  marked  5,  10,  1 5, 
to  one  extremity,  and  correspondingly  from  the  other  extre 
mity  15,  20  and  25,  to  the  0  point  again.  The  upper  range 
shows  the  minutes  for  angles  of  elevation,  and  the  lower 
range  for  those  of  depression.  The  vernier  in  Fig.  3  stands 
at  2"  15'  of  depression.  Had  the  15th  line  at  the  left, 
passed  the  short  line  with  which  it  now  coincides,  we  should 
pass  to  the  line  15,  on  the  lower  range  to  the  right,  and  then 
count  towards  the  0  to  the  left. 

The  first  thing  to  be  done,  is  to  ascertain  the  point  of  the 
vertical  limb  at  which  the  0  point  of  the  vernier  stands,  when 
the  line  of  collimation  of  the  upper  telescope,  together  with 


66  ELEMENTS    OF    SURVEYING. 

its  attached  level,  is  truly  horizontal.  This  is  called  the  true 
0  of  the  limb. 

If  the  instrument  be  accurately  constructed,  and  the  parts 
have  not  been  disarranged,  this  point  is  the  0  point  of  the 
hmb.  This,  however,  is  easily  ascertained  by  turning  the  limb 
till  the  O's  correspond,  and  then  examining  if  the  upper  level 
be  truly  horizontal.  If  not,  direct  the  telescope  to  a  distant 
and  elevated  object,  and  read  the  degrees  on  the  vertical 
limb.  Turn  the  vernier  plate  180",  reverse  the  telescope, 
direct  it  a  second  time  to  the  same  point,  and  read  the  arc  on 
the  vertical  limb.  The  half  difference  of  these  two  readings, 
counted  from  the  0  point  of  the  limb,  in  the  direction  of  the 
greater  arc  read,  gives  the  true  0  point  of  the  vertical  limb  ; 
that  is,  the  point  at  which  the  0  of  the  vernier  stands  when 
the  line  of  collimation  is  horizontal. 

Suppose  for  example,  that  we  had  directed  the  telescope  to 
a  point  and  found  the  0  of  the  vernier  to  stand  at  10°  of  ele- 
vation. If  we  now  reverse  the  telescope,  it  ought  to  incline 
at  an  equal  angle  of  depression.  If  then  we  turn  the  whole 
180°,  and  then  raise  the  depressed  end  of  the  telescope  with 
the  thumb-screw  Z",  until  it  is  directed  to  the  same  point  as 
before,  the  0  ought  to  stand  at  10°.  If  it  shows  a  less  arc, 
the  true  0  is  between  the  0  of  the  limb  and  the  first  arc  read ; 
if  a  greater,  it  is  on  the  other  side,  and  the  difference  divided 
by  two  will  indicate  the  exact  0  point.  The  half  difference 
thus  found  is  called  the  correction.  When  the  true  o  falls 
between  the  marked  0  and  the  eyeglass,  the  correction  is  to 
be  subtracted  from  the  arc  read,  for  angles  of  elevation,  and 
added,  for  angles  of  depression ;  and  the  reverse  when  it  falls 
on  the  other  side.  The  eyeglass  is  supposed  to  be  over  the 
thumb-screw  Z,  as  in  the  plate. 

These  preparatory  steps  being  taken,  let  the  axis  of  the 
telescope  be  directed  to  any  point  either  above  or  below  the 
plane  of  the  limb,  and  read  the  arc  indicated  by  the  0  of  the 
vernier.  To  the  arc  so  read  apply  the  proper  correction,  if 
any,  and  the  result  will  be  the  true  angle  of  elevation  or  de- 
pression. 

87.  Having  explained  the  preliminary  principles,  it  only 
remains  to  apply  them  to  the  measurement  of  Heights  and 
Distances. 


HEIGHTS     AND    DISTANCES. 


67 


PROBLEM     I. 

To  determine  the  horizontal  distance  to  a  'point  which  is  inacces' 
sible  by  reason  of  an  intervening  river. 

88.  Let  C  be  the  point.  Measure 
along-  the  bank  of  the  river  a  hori- 
zontal base  line  t^B,  and  select  the 
stations  ^  and  B,  in  such  a  manner 
that  each  can  be  seen  from  the  other, 
and  the  point  C  from  both  of  them. 
Then  measure  the  horizontal  angles 
CAB  and   CBA. 

Let  us  suppose  that  we  have  found  .^5  =  600  yards,  CAB 
57035'  and  CjBcy2  =  640  5l'. 

The  angle  0=180°  -  (^+jB)  =  570  34'. 

To  find  the  distance  BC. 


As  sin  C 

.      57"  34'  .       ar.  comp. 

.    0.073649 

:     sin  A 

.      570  35'  . 

.    9.926431 

::        AB 

.      600         ...           . 

.     600.11  yards. 

.    2.778151 

:           BC 

.    2.778231 

% 

To  find  the  distance  AC. 

As  sin  C 

57°  34'      ar.  comp. 

.    0.073649 

:      sin  B 

64051'. 

.    9.956744 

::      AB 

600       ...         . 
643.94  yards 

PROBLEM    II. 

.    2.778151 

:        AC 

2.808544 

To  determine  the  altitude  of  an  inaccessible  object  above  a  giveu 
horizontal  plane. 


FIRST    METHOD. 

89.  Suppose  D  to  be  the  inacces- 
sible object,  and  BC  the  horizontal 
plane  from  which  the  altitude  is  to 
be  estimated  :  then,  if  we  suppose 
DC  to  be  a  vertical  line,  it  will  re- 
present the  required  distance. 


C3  ELEMENTS    OF    SURVEYING. 


Measure  any  horizontal  base  line,  as  B*B. ;  and  at  the  ex- 
tremities B  and  A,  measure  the  horizontal  angles  CBA  and 
CAB.     Measure  also,  the  angle  of  elevation  DBC. 

Then  in  the  triangle  CBA  there  will  be  known,  two  angles 
and  the  side  AB ;  the  side  BC  can  therefore  be  determined. 
Having  found  BC,  we  shall  have,  in  the  right-angled  triangle 
DBC,  the  base  BC  and  the  angle  at  the  base,  to  find  the 
perpendicular  DC,  which  measures  the  altitude  of  the  point 
D  above  the  horizontal  plane  BC. 

Let  us  suppose  that  we  have  found 

BA  =  1S0  yards,  the  horizontal  angle  CBA  =  ilo2i', 
the  horizontal  angle  CAB  —  de>°  28',  and  the  angle  of  elevation 
DBC=10<^43'. 

In  the  triangle   BAC,  to  find  the   horizontal  distance  BC 

The  angle  5C^  =  180°— (41°  24'+96°  28')  =42''08'  =  C. 


As  sin  C     .     .42°  08'       ar.  comp. 

. 

.    0.173369 

:      sin.^     .     .   960  28'    . 

• 

.    9.997228 

::         AB  .     .  ISO 

to 

.   2.892095 

:              BC  .      .    1155.29 

.    3.062G92 

In  the  right-angled  triangle  DBC, 

find  DC. 

As       R         .             .         ar.  comp.     . 

0.000000 

:  tan  DBC  .     .   10°  43'      . 

9.277043 

BC       .      .    1155.29    . 

3.062692 

:           DC       .      .   218.64       . 

2.339735 

Remark  I.  It  might,  at  first,  appear  that  the  solution  which 
we  have  given,  requires  that  the  points  B  and  A  should  be  in 
the  same  horizontal  plane,  but  it  is  entirely  independent  of 
such  a  supposition. 


HEIGHTS    AND    DISTANCES.  69 

For,  the  horizontal  distance,  which  is  represented  by  BA, 
is  the  same,  whether  the  station  Jl  is  on  the  same  level  with 
J5,  above  it,  or  below  it  (Art.  74).  The  horizontal  angles 
CAB  and  CBA  are  also  the  same,  so  long  as  the  point  C  is  in 
the  vertical  line  DC  (Art.  75).  Therefore,  if  the  horizontal  hne 
through  A  should  cut  the  vertical  line  DC,  at  any  point  as  E, 
above  or  below  C,  AB  would  still  be  the  horizontal  distance 
between  B  and  A,  and  .^JE  which  is  equal  to  AC,  would  be 
the  horizontal  distance  between  A  and  C. 

If  at  A,  we  measure  the  angle  of  elevation  of  the  point  D, 
we  shall  know  in  the  right  angled  DAE,  the  base  AE,  and 
the  angle  at  the  base  ;  from  which  the  perpendicular  DE  can 
be  determined. 

Let  us  suppose  that  we  had  measured  the  angle  of  elevation 
DAE,  and  found  it  equal  to  20°  15'. 

First:  In  the  triangle  BAC,  to  find  AC  or  its  equal  AE, 


As  sin  C     .     .     42°  08'         ar.  comp.     . 

.    0.173369 

:      sin  B     .     .     41°24' 

.    9.820406 

: :       AB    .     .       780             ... 

.    2.892095 

:          AC     .      .        768.9 

.    2.885870 

In  the  right-angled  triangle  DAE,  to 

find  DE, 

As      iJ      .     .        •          ar.  comp. 

.    0.000000 

:  tan  .^       .     .     20«  15' 

.    9.566932 

: :      AE    .     .     768.9 

.    2.885870 

:         DE    .     .     283.66 

.    2.452802 

Now,  since  DC  is  less  than  DE,  it  follows  that  the  station 
B  is  above  the  station  A.     That  is, 

JDE-i)C  =  283.66 -2 18.64=  65.02  =J5:C, 

which  expresses  the  vertical  distance  that  the  station  B  is 
above  the  station  A. 

Remark  II.  It  should  be  remembered,  that  the  vertical 
distance  which  is  obtained  by  the  calculation,  is  estimated  from 
a  horizontal  hne  passing  through  the  eye  at  the  time  of 
observation.  Hence,  the  height  of  the  instrument  is  to  be 
added,  in  order  to  obtain  the  true  result. 


70  ELEMENTS    OF    SURVEYING. 


SECOND    METHOD. 


90.  When  the  nature 
of  the  ground  will  ad- 
mit of  it,  measure  a  base 
line  AB  in  the  direction 
of   the  object    D.     To 

do  this,  it  will  be  well  to  A ^^^^w^^v^^^^^-jy - 

place  the  theodolite  at  Jl^  and  range  the  chain  staves  by  means 
of  the  upper  telescope.  Having  measured  the  base,  measure 
with  the  instrument  the  angles  of  elevation  at  A  and  B. 

Then,  since  the  outward  angle  DBC  is  equal  to  the  sum 
of  the  angles  A  and  ADB,  it  follows,  that  the  angle  ADB 
is  equal  to  the  difference  of  the  angles  of  elevation  at  A  and 
B.  Hence,  we  can  find  all  the  parts  of  the  triangle  ADB. 
Having  found  DB,  and  knowing  the  angle  DBC,  we  can  find 
the  altitude  DC. 

This  method  supposes  that  the  stations  .^  and  5  are  on 
the  same  horizontal  plane  ;  and  therefore  can  only  be  used 
when  the  line  AB  is  nearly  horizontal. 

Let  us  suppose  that  we  have  measured  the  base  line,  and 
the  two  angles  of  elevation,  and 

CAB  =  Q15  yards 
found  ?^  =  15°  36' 

(2)50  =  270  29'; 
required  the  altitude  DC. 

First:  ADB=DBC-A=2i'  29' -15'  36'  =  ii»  53'. 


In  tlie  triangle  ADB,  to  find  BD. 

As  sin  D 

11°  53'     .     ar.  comp. 

, 

0.686302 

:      sin  A 

.      15°  36'     . 

. 

9.429623 

:  :        AB 

975       .           . 
.       1273.3      . 

• 

2.989005 

:           DB 

3.104930 

In  the  triangle  DBC,  to  find 

DC. 

As      R 

ar.  comp. 

, 

0.000000 

:     sin  5 

27°  29'          .           .           . 

. 

9.664163 

::       DB 

.      1273.3 

. 

3.104930 

:        DC 

.       587.61 

. 

2.769093 

HEIGHTS    AND    DISTANCES.  71 

PROBLEM    III. 

To  determine  the  perpendicular  distance  of  an  object  below  a  given 
horizontal  plane, 

91.  Suppose  C  to  be  directly 
over  the  given  object,  and  A  the 
point  through  which  the  horizontal 
plane  is  supposed  to  pass. 

Measure  a  horizontal  base  line 
AB,  and  at  the  stations  A  and  B 
conceive  the  two  horizontal  lines        .    , 
.^C,  BC,  to  be  drawn.  The  oblique    ^'^  '  ^"^^4^ 

lines  from  A  and  B  to  the  object  will  be  the  hypothenuse? 
of  two  right-angled  triangles,  of  which  AC,  BC,  are  the 
bases.  The  perpendiculars  of  these  triangles  will  be  the 
distances  from  the  horizontal  lines  AC,  BC,  to  the  object. 
If  we  turn  the  triangles  about  their  bases  AC,  BC,  until 
they  become  horizontal,  the  object,  in  the  first  case,  will  fall 
at  C,  and  in  the  second  at  C". 

Measure  the  horizontal  angles   CAB,  CBA,  and  also  the 
angles  of  depression   C'AC,   C"BC. 

Let  us  suppose  that  we  have 

\AB  =  Q12  yards 

found <^  ABC  =  39'  20' 
CV3C  =  27°  49' 

C"BC  =  19'  10' 
First:   In  the  triangle  ABC,  the  horizontal  angle 
ACB  =  lS0'—{A+B)  =  l80'-lll'  49'=6S°  11'. 

To  find  the  horizontal  distance  AC. 

As  sin  C      .     68°  11'  .  ar.  comp.  .  0.032275 

sin  5     .      39°  20'  .  .            .  •  9.801973 

AB   .672  .  .             .  .  2.827369 

AC    .     458.79  .  .             .  .  2.661617 

To  find  the  horizontal  distance  BC. 
As  sin  C      .     68°  u'     .     ar.  comp.  .         0.032275 

9.979380 
2.827369 
2.839024 


sin  A 

72°  29' 

AB   . 

672 

BC    . 

690.28 

7t 


ELEMEiNTS    OF    SURVEYING. 


In  the  triangle   CJlC,  to  find  CC\ 


As 


R 

tan  C'^C 

AC 

CO 


ar.  comp 


.  27"  49' 
.  458.79 
.    242.06 


In  the  triangle  CBC'\  to  find  CC". 
ar.  comp. 


As         R  . 

. 

:     tan  C'BC 

.     19°  10' 

::         BC 

.     690.28 

:           CC" 

.    239.93 

0.000000 
9.722315 
2.061017 
2.383932 


0.000000 
9.541061 
2.839024 
2.380085 


Hence  also,  CC — CC"=:242. 06  — 239.93  =  2.13  yards; 
which  is  the  height  of  the  station  A  above  station  B. 

Remark.  In  measuring  a  base  line,  if  great  accuracy  is 
required,  the  theodolite  should  be  placed  at  one  extremity, 
and  the  telescope  directed  to  the  other,  and  the  alignment  of 
the  staves  made  by  means  of  the  intersection  of  the  spider's 
lines.  If  the  highest  degree  of  accuracy  is  necessary,  the 
base  line  should  be  measured  with  rods,  which  admit  of  being 
adjusted  to  a  horizontal  position  by  means  of  a  spirit  level. 

APPLICATIONS. 

1.  Wanting  to  know  the  distance  between  two  inaccessible 
objects,  which  lie  in  a  direct  line  from  the  bottom  of  a  tower 
of  120  feet  in  height,  the  angles  of  depression  are  measured, 
and  are  found  to  be,  of  the  nearest  57°,  of  the  most  remote 
2  5°  30' :  required  the  distance  between  them. 

Jlns.    17  3.656  feet. 


2.  In  order  to  find  the  distance  between 
two  trees  A  and  B,  which  could  not  be 
directly  measured  because  of  a  pool  which 
occupied  the  intermediate  space,  the  dis- 
tances of  a  third  point  C  from  each  of 
them  were  measured,  and  also  the  included 
angle  ACB :  it  was  found  that 


HEIGHTS    AND    DISTANCES. 


73 


CB  =  Q12  yards 
Cd  =  588  yards 


required  the  distance  AB. 


55°  40'; 


Ans.  592.967  yards. 


3.  Being  on  a  horizontal  plane,  and  wanting  to  ascertain 
the  height  of  a  tower,  standing  on  the  top  of  an  inaccessible 
hill,  there  were  measured,  the  angle  of  elevation  of  the  top 
of  the  hill  40°,  and  of  the  top  of  the  tower  51°;  then  mea- 
suring in  a  direct  line  180  feet  farther  from  the  hill,  the  angle 
of  elevation  of  the  top  of  the  tower  was  33°  45' ;  required  the 
height  of  the  tower.  ^^^^    g3_^g3  ^^^^^ 

4.  Wanting  to  know  the  horizon- 
tal distance  between  two  inaccessi- 
ble objects  E  and   W,  the  following  ^^r 
measurements  were  made, 

AB  =  5ZG  yards 
BAW=40'  16' 

viz.  {  WAE=5i'  40' 

.^^^=42°  22' 
EBW=1\'  07' 
required  the  distance   EW. 

5.  Wanting  to  know  the  hor- 
izontal distance  between  two 
inaccessible  objects  A  and  B,S^ 
and  not  finding  any  station  from 
which  both  of  them  could  be 
seen,  two  points  C  and  D,  were 
chosen,  at  a  distance  from  each 
other,  equal  to  200  yards  ;  from  the  former  of  these  points  A 
could  be  seen,  and  from  the  latter  Bf  and  at  each  of  the  points 
C  and  D  a  staff  was  set  up.  From  C  a  distance  CF  was 
measured,  not  in  the  direction  DC,  equal  to  2  00  yards,  and 
from  D  a  distance  DE  equal  to  200  yards,  and  the  following 
angles  taken, 

r^FC  =  83°  00'  J52)E  =  54°  30' 
viz.    <.4CZ)=.53°  30'   i?DC=156°25' 
(ACF-.^5^o  31'   BEn=88'  30' 

Ans,  .^^=345.467  yards. 


74 


ELEiMKxNTS    OF    SURVEYING. 


6.  From  a  station  P  there  can  be 
seen  three  objects  A,  B  and  C,  whose 
distances  from  each  other  are  known  : 
viz.  AB  =  SOO,  JlC  =  eoo,  and  BC 
==400  yards.  Now,  there  are  mea- 
sured the  liorizontal  angles 

.5PC  =  33o  45'  and  BPC=22°  30' : 
it  is  required  to  find  the  three  distances 
PA,  PC,  and  PB. 


r  P^  =  710.193  yards. 
Ans.    ^PC=  1042. 522 
r  P^  =  934.291 


OF    MEASUREMENTS    WITH    THE    TAPE    OR    CHAIN    ONLY. 

92.  It  often  happens  that  instrmnents  for  the  measurement 
of  angles  cannot  be  easily  obtained ;  we  must  then  rely 
entirely  on  the  tape  or  chain. 

We  now  propose  to  explain  the  best  methods  of  determining 
distances,  without  the  aid  of  instruments  for  the  measurement 
of  horizontal  or  vertical  angles. 

PROBLEM    I. 

To  trace,  on  the  ground,  the  direction  of  a  right  line,  that  shall  be 
perpendicular  at  a  given  point,  to  a  given  right  line. 


£> 


FIRST    METHOD. 

93.  Let  BC  be  the  given  right  line,  and 
A  the  given  point.  Measure  frj*m  A,  on 
the  line  BC,  two  equal  distances  AB,  AC, 
one  on  each  side  of  the  point  A.     Take  a  b  A  C 

portion  of  the  chain  or  tape,  greater  than  ^^B,  and  place  one 
extremity  at  B,  and  with  the  other  trace  the  arc  of  a  circle  on 
the  ground.  Then  remove  the  end  which  was  at  B,  to  C, 
and  trace  a  second  arc  intersecting  the  former  at  D.  The 
straight  line  drawn  through  D  and  A  will  be  perpendicular 
to  jBC  at  A. 


PRACTICAL    PROBLEMS. 


75 


f  SECOND    METHOD. 

94.  Having  made  AB=AC,  take 
any  portion  of  the  tape  or  chain,  con- 
siderably  greater  than   the  distance  _^ 
between  B  and  C.    Mark  the  middle 
point  of  it,  and  fasten  its  two  extremi- 
ties, the  one  at  B  and  the  other  at  JJ 
C,     Then,  taking  the  chain  by  the  middle  point,  stretch  it 
tightly  on  either  side  of  BC,  and  place  a  staff  at  D  or  £  : 
then  will  DJlE  be  the  perpendicular  required. 


f 


THIRD    METHOD. 

95.  Let  JIB  be  the  given  line,  and 
C  the  point  at  which  the  perpendicular 
is  to  be  drawn.  From  the  point  C 
measure  a  distance  CA  equal  to  8. 
With  C  as  a  centre,  and  a  radius  equal 
to  6,  describe  an  arc  on  either  side  of 
»^B  :  then,  with  .^  as  a  centre,  and  a 
radius  equal  to  1 0,  describe  a  second  arc 
intersecting  the  one  before  described  at  E:  then  draw  the 
line  EC,  and  it  will  be  perpendicular  to  AB  at   C, 


Ar 


k 


Remark.  Any  three  lines,  having  the  ratio  of  6,  8  and  10, 
form  a  right-angled  triangle,  of  which  the  side  corresponding 
to  10  is  the  hypothenuse 


FOURTH  METHOD. 


96.  Let  AD  be  the  given  right 
hne,  and  D  the  point  at  which 
the  perpendicular  is  to  be  drawn. 
Take  any  distance  on  the  tape  or 
chain,  and  place  one  extremity  at 
D,    and  fasten  the   other   at   some 

point  as   E,  between  the  two  lines  ***- --'" 

which  are  to  form  the  right  angle.  Place  a  staff  at  E. 
Then,  having  stationed  a  person  at  D,  remove  the  extremity 
of  the  chain  and  carry  it  round  until  it  ranges  on  the  line 
DA  at  A.     Place  a  staff  at  A :  then  remove  the  end  of  the 


76  ELEMENTS    OF    SURVEYING. 

chain  at  Jl^  and  carry  it  round  until  it  falls  on  the  line  AE 
at  F.  Then  place  a  staff  at  F,  and  JIDF  will  be  a  right 
angle,  being  an  angle  in  a  semi-circle. 

97.  There  is  a  very  siinple  instrument,  used  exclusively 
in  laying  off  right  angles  on  the  ground,  which  is  called  the 

SURVEYING    CROSS. 

PI.  2.  Fig.  1.  This  instrument  consists  of  two  bars,  JIB 
and  CD,  permanently  fixed  at  right  angles  to  each  other, 
and  firmly  attached  at  ^  to  a  pointed  staff,  Avhich  serves  as 
a  support.  Four  sights  are  screwed  firmly  to  the  bars,  by 
means  of  the  screws  a,  6,  c,  and  d. 

As  the  only  use  of  this  instrument  is  to  lay  off  right  angles, 
it  is  of  the  first  importance  that  the  lines  of  sight  be  truly 
at  right  angles.  To  ascertain  if  they  are  so,  let  the  bar  AB 
be  turned  until  its  sights  mark  some  distinct  object ;  then 
look  through  the  other  sights  and  place  a  staff  on  the  line 
which  they  indicate  :  let  the  cross  be  then  turned  until  the 
sights  of  the  bar  AB  come  to  the  same  line  :  if  the  other 
sights  are  directed  to  the  first  object,  the  lines  of  sight  are 
exactly  at  right  angles. 

The  sights  being  at  right  angles,  if  one  of  them  be  turned 
in  the  direction  of  a  given  line,  the  other  will  mark  the  direc- 
tion of  a  line  perpendicular  to  it,  at  the  point  where  the 
instrument  is  placed. 

PROBLEM    II. 

From  a  given  point  without  a  straight  line,  to  let  fall  a  perpen- 
dicular on  the  line. 

98.  Let  C  be  the  given  point, 
and  AB  the  given  line. 

From  C  measure  a  line,  as  CA, 

to  any  point  of  the  line  AB.  From        ^Ir-'"^       \ n 

A,  measure  on  AB  any  distance     ^  Jb'  D 

as  AF,  and  at  F  erect  FF  perpendicular  to  AB. 

Having  stationed  a  person  at  A,  measure  along  the  perpen- 
dicular FF  until  the  forward  staff  is  aligned  on  the  line  AC  : 
then  measure  the  distance  AE.  Now,  by  similar  triangles, 
we  have 

AE  :  AF  ::  AC  :  AD 


HEIGHTS    AND    DISTANCES.  77 

in  which  all  the  terms  are  known  except  AD,  which  may, 
therefore,  be  considered  as  foimd.  The  distance  AD  being 
laid  off  from  A,  the  pomt  D,  at  which  the  perpendicular 
CD  meets  AB,  becomes  known.  If  we  wish  the  length  of 
the  perpendicular,  we  use  the  proportion 

AE  :  EF  :  :  AC  :   CD, 
in  which   all  the  terms  are  known,  excepting  CD :  there- 
fore, CD  is  determined. 

PROBLEM    III. 

To  determine  the  horizontal  distance  from  a  given  point  to  an 
inaccessible  object. 

99.  Let  A  be  an  inaccessible  ob- 
ject, and  E  the  point  from  which  I 
the  distance  is  to  be  measured. 

At  E  lay  off  the  right  angle  AED,  --^^ 

and  measure  in  the  direction  ED,  U 

any  convenient  distance  to  D,  and      »        ^f-r 
place  a  staff  at  D.     Then  measure      ^..x"      ; 
from  E,  directly  towards  the  object    D  F  ■        ''' 

A,  a  distance  EB  of  a  convenient  length,  and  at  B  lay  off 
a  line  BC  perpendicular  to  EA.  Measure  along  the  line 
BC,  until  a  person  at  D  shall  range  the  forward  staff  on  the 
line  DA.  Now,  DF  is  known,  being  equal  to  the  difference 
between  the  two  measured  lines  DE  and  CB.  Hence,  by 
similar  triangles, 

DF  :  FC  :  :   DE  :  EA, 
in  which   proportion  all  the    terms    are    known,  except   the 
fourth,  which  may,  therefore,  be  regarded  as  found :  hence, 
EA  is  determined. 

SECOND     METHOD. 

100.  At  the  point  E  lay  off 
EB  perpendicular  to  the  line 
EA,  and  measure  along  it  any 
convenient  distance,  as  EB. 

At  B  lay  off  the  right  angle 
EBD,  and  measure  any  distance 
in  the  direction  BD.  Let  a  per- 
son at  D  align  a  staff  on  DA, 


78 


ELEMENTS    OF    SURVEYING. 


while  a  second  person  at  B  aligns  it  on  BE :  the   staff  will 
thus  be  fixed  at   C.     Then  measure  the  distance  BC. 
The  two  triangles  BCD  and  CAE  being  similar,  we  have, 

BC  :  BD  :  :   CE  :  EA, 

m  which  all  the  terms  are  known,  except  the  fourth,  which 
may,  therefore,  be  regarded  as  found. 


THIRD    METHOD. 

101.  Let  B  be  the  given  point, 
and  A  the  inaccessible  object,  it 
is  required  to  find  BA. 

Measure  any  horizontal  base 
line,  as  BC.  Then,  having  placed 
staves  at  B  and  C,  measure  any 
convenient  distances  BD  and  CE, 
such  that  the  points  D,  B  and  A, 
shall  be  in  the  same  right  line, 
as  also,  the  points  E,  C  and  A ; 
then  rrieasure  the  diagonal  lines  DC  and  EB. 

Now,  in  the  triangle  BEC,  the  three  sides  are  known, 
therefore,  the  angle  ECB  can  be  found.  In  the  triangle 
CDB,  the  three  sides  are  also  known,  therefore  the  angle 
CBD  can  be  determined.  These  angles  being  respectively 
subtracted  from  180°,  the  two  angles  ACB  and  ABC  be- 
come known ;  and  hence,  in  the  triangle  ABC,  we  have 
two  angles  and  the  included  side,  to  find  the  side  BA. 


PROBLEM     IV. 


To  find   the   altitude   of  an   object,   when   the   distance   to   the 
vertical  line  passing  through  the  top  of  it  is  known. 


102.  Let  CD  be  the  alti- 
tude required,  and  AC  the 
known  distance. 

From  A,  measure  on  the 


line   AC,   any  convenient    ^i  ,.'■ 


B 


distance  AB,  and  place  a 

staff  vertically  af,  B.     Then  placing  the  eye  at  A,  sight  to 


CONTENT    OF    GROUND.  79 

the  object  D,  and  let  the  point,  at  which  the  line  AD  cuts 
the  staff  BE,  be  marked.  Measure  the  distance  BE  on  the 
gtaff;   then  say, 

As     .     AB  :  BE  :  :  AC  :   CD, 
then,   CD  becomes  known. 

If  the  line  AC  cannot  be  measured,  on  account  of  inter- 
vening objects,  it  may  be  determined  by  calculation,  as  in 
the  last  problem,  and  then,  having  found  the  horizontal  dis- 
tance, the  vertical  line  is  readily  determined,  as  before. 


CHAPTER  III. 

Of  the  area  or  content  of  ground. — Of  laying  out  and 
dividing  land. 

103.  We  come  next  to  the  determination  of  the  area  or 
content  of  ground. 

The  surface  of  the  ground  being,  in  general,  broken  and 
uneven,  it  is  impossible,  without  great  trouble  and  expense, 
to  ascertain  its  exact  area  or  content.  To  avoid  this  incon- 
venience, it  has  been  agreed  to  refer  every  surface  to  a 
horizontal  plane  :  that  is,  to  regard  all  its  bounding  lines  as 
horizontal,  and  its  area  as  measured  by  that  portion  of  the 
horizontal   plane  which  the  boundary  lines  enclose. 

For  example,  if  ABCD  were  a 
piece  of  ground  having  an  uneven 
surface,  we  should  refer  the  whole  to 
a  horizontal  plane,  and  take  for  the 
measure  of  the  area  that  part  of  the 
plane  which  is  included  between  the 
bounding  lines  AB,  BC,  CD,  DA. 

In  estimating  land  in  this  manner,  the  sum  of  the  areas 
of  all  the  parts  into  which  a  tract  may  be  divided,  is  equal 
to  the  area  estimating  it  as  an  entire  piece  :  but  this  would 
not  be  the  case  if  the  areas  of  the  parts  had  reference  to 
the  actual  surface,  and  the  area  of  the  whole  were  calcu- 
lated from  its  bounding  lines. 


80 


ELEMENTS    OF    SURVEYING. 


104.  The  unit  of  a  quantity  is  one  of  the  equal  parts  of 
which  the  quantity  is  composed  {Arilh.  In.  VI).  Thus,  a 
Jine  of  three  feet  in  length  is  made  up  of'  three  single  feet, 
and  of  this  line,  1  foot  is  the  unit.  The  unit  of  a  line  may 
be  1  foot,  1  yard,  1  rod,  1  chain,  or  any  other  known  distance. 

If,  on  the  unit  of  length,  a  square  be  described,  it  will 
form  the   unit  for  computing  areas. 


1  foot. 


Thus,  is  1  square  foot, 


1  square  yard,  or  9  square  feet. 


1   yard=3  foet. 

I  square  chain,  or  16  square  rods.   . 


1  chain: 

=4  rn 

ds. 

Thus  it  is  seen  that  there  are  two  kinds  of  quantity  to  be 
considered,  viz.  lines,  and  areas  or  surfaces ;  and  each  kind 
has  its  own  unit  of  measure. 

When,  therefore,  the  linear  measures  of  ground  are  feet, 
yards,  rods,  or  chains,  the  superficial  measures  will  be  square 
feet,  square  yards,  square  rods,  or  square  chains  ;  and  the 
number  expressing  the  area  will  be  nothing  else  than  the 
number  of  times  which  the  unit  of  superficial  measure  is 
contained  in  the  land  measured. 

It  has  been  already  observed  (Art.  83),  that  Gunter's  chain 
of  four  rods  or  66  feet  in  length,  and  which  is  divided  into 
100  links,  is  the  chain  in  general  use  among  surveyors.  We 
shall,  therefore,  take  the  length  of  this  chain  for  the  unit 
of  linear  measure. 


CONTENT    OP    GROUND. 


81 


105.  An  acre  is  a  surface  equal  in  extent  to  10  square 
chains ;  that  is,  equal  to  a  rectangle  of  which  one  side  is 
ten  chains,  and  the  other  side  one   chain. 

One-quarter  of  an  acre,  is  called  a  rood. 

Since  the  chain  is  4  rods  in  length,  1  square  chain  con- 
tains 16  square  rods;  and  therefore,  an  acre,  which  is  10 
square  chains,  contains  160  square  rods,  ar  i  a  rood  contains 
40  square  rods.     The  square  rods  are  called  perches. 

106.  Land  is  generally  computed  in  acres,  roods,  and  perches, 
which  are  respectively  designated  by  the  letters  A.  R.  P. 

When  the  linear  dimensions  of  a  survey  are  chains  or  links, 
the  area  will  be  expressed  in  square  chains  or  square  links, 
and  it  is  necessary  to  form  a  rule  for  reducing  this  area  to 
acres,  roods,  and  perches.  For  this  purpose,  let  us  form  the 
following 

TABLE. 

1  square  chain  =  10000  square  links. 
1  acre  =  10  square  chains  =  100000  square  links. 

1  acre  =  4  roods  =  160  perches. 
1  square  mile  =  6400  square  chains  =  640  acres. 

Now,  when  the  linear  dimensions  are  links,  the  area  will 
be  expressed  in  square  links,  and  may  be  reduced  to  acres 
by  dividing  by  100000,  the  number  of  square  links  in  an 
acre :  that  is,  by  pointing  off  five  decimal  places  from  the 
right  hand. 

If  the  decimal  part  be  then  multiplied  by  4,  and  five  places 
of  decimals  pointed  off  from  the  right  hand,  the  figures  to 
the  left  will  express  the  roods. 

If  the  decimal  part  of  this  result  be  now  multiplied  by  40, 
and  five  places  for  decimals  pointed  off,  as  before,  the  figures 
to  the  left  will  express  the  perches. 

If  one  of  the  dimensions  be  in  links,  and  the  other  in 
chains,  the  chains  may  be  reduced  to  links  by  annexing  two 
ciphers :  or,  the  multiplication  may  be  made  without  annex- 
ing the  ciphers,  and  the  product  reduced  to  acres  and  deci- 
mals of  an  acre,  by  pointing  off  three  decimal  places  at  the 
right  hand. 

When  both  the  dimensions  are  in  chains,  the  product  is 
reduced  to  acres  by  dividing  by  10,  or  pointing  off  one  deci- 
mal place.  '  ^ 


82  ELEMENTS    OF    SURVEYING. 

From  v/hich  we  conclude  ;  that, 

1st.  If  links  be  multipUed  by  links^  the  product  is  reduced 
to  acres  by  pointing  off  five  decimal  places  from  the  right  hand. 

'2d.  If  chains  be  multiplied  by  links,  the  product  is  reduced 
to  acres  by  pointing  off  three  decimal  places  from  the  right  hand. 

3d.  If  chains  be  multiplied  by  chains,  the  product  is  reduced 
to  acres  by  pointing  off  one  decimal  place  from  the  right  hand. 

107.  Since  there  are  16.5  feet  in  a  rod,  a  square  rod  is 
equal  to      .       16.5  x  16.5=272.25  square  feet. 

If  the  last  number  Irr  multiphed  by  160,  we  shall  have 

272.25  X  160  =  43560  =the  square  feet  in  an  acre. 
Since  there  are  9  square  feet  in  a  square  yard,  if  the  las* 
iiumber  be  divided  by  9,  we  obtain 

4840=  the  number  of  square  yards  in  an  acre. 

PROBLEM    I. 

108.  To  find  the  area  of  a  square  or  rectangular  piece 
of  ground. 

Multiply  the  two  sides  together,  and  the  product  will  express 
the  area  (Geom.  Bk.  IV,  Prop.  IV). 

1.   To  find   the   area  of  the  rectangular      jy  f^ 

field  ABCD. 

Measure  the  two  sides  AB,  EC :  let  us 
suppose  that  we  have  found  AB  =  14  chains 
27  links,  and  5C=9  chains  75  links.    Then, 
JIB  =1^-21  links, 
BC=^  975  links, 
d35x  J5C=1391325  square  links, 
=  13.91325  acres. 
4 


3.65300  roods, 
40 


26.12000  perches. 

Ms.    izA  3R  26P. 

3.   What  is  the  area  of  a  square  field,  of  which  the  sides 
are  each  33  ch  sH 

Ans.    109.1    IR    29P. 


CONTENT    OF    GROUND.  83 

3.  What  is  the  content  of  a  rectangular  field,  of  which 
the  longest  side  is  49  ch  27  1,  and  the  shorter  38  ch  7  1? 

As.     187^    2R    llP. 

PROBLEM    II. 

109.  To  find  the  content  of  a  piece  of  land  in  the  form 
of  a  triangle. 

FIRST    METHOD. 

Measure  either  side  of  the  triangle 
as  BC,  and  from  the  opposite  angle 
A  let  fall  a  perpendicular  AD,  and 
measure  this  perpendicular  ;  then,  mul- 
tiply the  base  and  perpendicular  to- 
gether, and  divide  the  product  by  2, 
the  result  will  express  the  area  of  the  triangle.  Or,  the  area 
is  equal  to  the  base  multiplied  by  half  the  perpendicular,  or 
to  the  perpendicular  multiplied  by  half  the  base  (Georn.  Bk. 
IV,  Prop.  11). 

1.  What  is  the  content  of  a  triangle  whose  base  is  25  ch 
1  1,  and  perpendicular  1 8  ch  14  1? 

Ans.  22A   2R  29P. 

2.  What  is  the  content  of  a  triangle  whose  base  is  15.48 
chains,  and  altitude  9.67  chains  1 

Ans.  lA   \R   38P 

SECOND    METHOD. 

Measure  two  sides  and  their  included  angle.  Then,  add 
together  the  logarithms  of  the  two  sides  and  the  logarithmic 
sine  of  their  ificluded  angle  ;  from  iliis  sum  subtract  the  loga- 
rithm of  the  radius,  which  is  10,  and  the  remainder  will  he 
the  logarithm  of  double  the  area  of  the  triangle.  Find,  from 
the  table,  the  number  answering  to  this  logarithm,  and  divide 
it  by  2  ;  the  quotient  will  be  the  required  area  (Geom.  Mens. 
Prob.   II). 

1.  In  a  triangle  ABC,  suppose  that  we  have  found  AB  = 
57.65  ch,  w3C=125.81  ch,  and   the  included   angle    CAB  — 

57°  25' :  required  the  area. 


2.099715 
9.925626 

10 

3.786140 


84  ELEMENTS    OF    SURVEYING. 

Let  the  required  area  be  designated  by  Q  •  then 

(+\og  AB   57.65        .  .  1.760799 

+  log^C    125.81 
+  logsin^57«'25 
-log  R 
2Q      .  .  6111.4 

And     .      Q     .         .  3055.7  square  chains. 

Ans.  305.^  2R  ilP. 

Remark.  In  this  example,  the  links  are  treated  as  deci- 
mal parts  of  the  chain  ;  the  result,  therefore,  is  in  square 
chains  and  decimal  parts  of  a  square  chain. 

2.  What  is  the  area  of  a  triangle  whose  sides  are  30  and 
40  chains,  and  their  included  angle  28°  57'  1 

Ms.  29.^  OR  7P. 

THIRD    METHOD. 

Measure  the  three  sides  of  the  triangle.  Then,  add  them  to- 
gether and  take  half  their  sum.  From  this  half  sum  subtract 
each  side  separately.  Then,  multiply  the  half  sum  and  the  three 
remainders  together,  and  extract  the  square  root  of  the  product : 
the  result  icill  be  the  area  (Geom.  Mens.  Prob.  II). 

Or,  after  having  obtained  the  three  remainders,  add  together 
the  logarithm  of  the  half  sum  and  the  logarithms  of  the  respective 
remainders,  and  divide  their  sum  by  2  :  the  quotient  will  be  the 
logarithm  of  the  area. 

1.  Find  the  area  of  a  triangular  piece  of  ground  whose 
sides  are  20,  30,  and  40  chains. 


FIRST    METHOD. 

20 

45 

45 

f 

45 

30 

—  20 

-30 

-40 

40 

2  5  1st  rem. 

15 

2d 

rem. 

5 

___ 

— 

2)90 

45  = 

=half 

sum.     Then, 

5  3d  rem. 


45X25X  15x5  =  84375  :    and  V84375=290.4737=the  area. 

Ans.  29A  OR  8P. 

2.  What  is  the  area  of  a  triangle  whose  sides  are  2569, 
4900,  and  5035  links? 


CONTENT    OF    GROUND.  85 


SECOND  METHOD 

• 

2669 

6252          6252 

6252 

4900 

—  2569        —4900 

-5035 

5035 
)12504 

3683  1st  rem.  1352 

2d  rem.  1217  3d  rem. 

62  52  = 

:half  sum. 

Then, 

'log  6252 

J  log  3683 

\   log  1352 

log   1217 

3.796019 
3.566202 
3.130977 
3.085291 
2)13.578489 

Area  in 

square  links,  6155225 

PROBLEM  III. 

6.789244 
Ms.    61 A    2R   SP. 

LLl 


110.  To  find  the  area  of  a  piece  of  land  in  the  form  of 
a  trapezoid. 

Measure  the  two  parallel  sides,  and  also  the  perpendicular 
distance  between  them.  Add  the  two  parallel  sides  together, 
and  take  half  the  sum  ;  then  multiply  the  half  sum  by  the  per- 
pendicular, and  the  product  will  be  the  area  (Geom.  Bk.  IV. 
Prop.  VII). 

1.  What  is  the  area  of  a  trapezoid,  of 
which  the  parallel  sides  are  30  and  49 
chains,  and  the  perpendicular  distance  be- 
tween them  16  ch  60  1,  or  16.60  chains  1 

30  +  49=79  ;  dividing  by  2,  gives         .  39.5 

multiply  by 16.60 

gives  for  the  area  in  square  chains,      .        655.700 

Ans,   65A  2R    11  P. 

2.  Required  the  content,  when  the  parallel  sides  are  20 
And   32  ch,  and  the    perpendicular   distance    between  them 

^^'^^'  Ms.  GlA  2R   16P. 

PROBLEM    IV. 

111.  To  find  the  area  of  a  piece  of  land  in  the  form  of  a 
quadrilateral. 

Measure  the  four  sides  of  the  quadrilateral,  and  also  one 
of  the  diagonals:    the  quadrilateral  will  thus  be  divided  into 


86 


ELEMENTS    OF    SURVEYING. 


two  triangles,  in  both  of  which  all  the  sides  will  be  known. 
Then,  find  the  areas  of  the  triangles  separately,  and  their  sum 
will  be   the  area  of  the  quadrilateral. 

1.  Suppose  that  we  have  measured 
the  sides  and  diagonal  AC,  of  the 
quadrilateral  ABCD,  and  found 

.^J5  =  40.05  ch,     Ci>  =  29.87  ch, 

5C  =  26.27  ch,     AD  =  Z1.01  ch, 
and  AC =55  ch  : 

required  the  area  of  the  quadrilateral. 

Ans.   101 A   iR   15P. 

Remark.  Instead  of  measuring  the  four  sides  of  the 
quadrilateral,  we  may  let  fall  the  perpendiculars  Bb,  Dg, 
on  the  diagonal  AC.  The  area  of  the  triangle  may  then 
be  determined  by  measuring  these  perpendiculars  and  the 
diagonal  AC.  The  perpendiculars  are  1)^  =  18.95  ch,  and 
J56  =  17.92  ch. 

PROBLEM    V. 

112.  To  find  the  content  of  a  field  having  any  number 
of  sides. 

Measure  the  sides  of  the  field  and  also  the  diagonals  :  the 
three  sides  of  each  of  the  triangles  into  which  the  field  will  be 
thus  divided  will  then  be  known,  and  the  areas  of  the  triangles 
may  then  be  calculated  by  the  preceding  rules.  Or,  measure 
the  diagonals,  and  from  the  angular  points  of  the  field  draw 
perpendiculars  to  the  diagonals  and  measure  their  lengths  :  the 
base  and  perpendicular  of  each  of  the  triangles  will  then  be 
known. 

1.  Let  it  be  required  to  determine  the  content  of  the 
field   ABCDE,  having  five  sides. 

Let  us  suppose  that  we  have  mea- 
sured the  diagonals  and  perpendicu- 
lars, and  found 

^0  =  36.21  ch,     EC  =  39.11  ch, 

Bb  =  4.08  ch,  Dd  =  1.26  ch,  Aa  = 
4.19ch;    also  JE:a  =  4.00  ch,    E£/=  13.60  ch,    ^6=20.30ch; 
required  the  area  of  the  field. 


CONTENT    OP    GROUND.  87 

Area  of  triangle  ABC=  73.8684         square  chains 
area  of        "        Ci)E  =  141.9693  "  " 

area  of        "        J1CE=   81.7399  "  " 

area  of  ABCDE=291.511Q  "  " 

Ans,  29A  3R  12P 

PROBLEM     VI. 

113.     To  find  the  content  of  a  long  and  irregular  figure, 
bounded  on  one  side  by  a  straight  line. 

Suppose  the  ground,  of  which  the  content  is  required,  to  be 
of  tiie  form  ABEeda,  bounded  on  one  side  by  the  right  line 
AE,  and  on  the  other  by  the  curve  edca. 
At  A  and  E,  the  extremities  of  the 
right  line  AE,  erect  the   two  perpen- 
diculars Aa.  jEe,  and  on  each  of  them     :        i        '• J- 4. 

measure  the  breadth  of  the  land.   Then     ^     ^ 

divide  the  base  into  any  convenient  number  of  equal  parts 

and   measure    the   breadth   of  the   land    at   each    point   of 

division. 

Add  together  the  intermediate  breadths  and  half  the  sum  of 
the  two  extreme  ones  :  then  multiply  this  sum  by  one  of  the  equal 
parts  of  the  base  line,  and  the  product  will  be  the  required  area 
very  nearly  (Mens.  Prob.  VI). 

1.  The  breadths  of  an  irregular  figure,  at  five  equidis- 
tant places,  being  8.20  ch,  7.40  ch,  9.20  ch,  10.20  ch,  and 
8.60  chains,  and  the  whole  length  40  chains,  required  the 
area. 

8.20  4)^ 

8.60  10  one  of  the  equal  parts. 

2)16.80 

8.40     mean  of  the  extremes  35.20     sum 

7.40  10 

9.20  area    352.00  square  ch. 

10.20 


35.20  sura 

Ans.   S5A  2R. 

2.   The  length  of  an  irregular  piece  of  land  being  21  ch, 
and  the  breadths,  at  six   equidistant  points,  being   4.35  ch, 


88  ELEMENTS    OF    SURVEYING. 

5.15  ch,  3.55  ch,  4.12  ch,  5.02  ch,  and  6.10  chains  :   required 
the  area. 

Ms.    9J1  2R  3oP. 

Remark.  If  it  is  not  convenient  to  erect  the  perpendic- 
ulars at  equal  distances  from  each  other,  the  areas  of  the 
trapezoids,  into  which  the  whole  figure  is  divided,  must  be 
computed  separately  :   their  sum  will  be  the  required  area. 

PROBLEM    VII, 

114.  To  find  the  area  of  a  piece  of  ground  in  the  form 
of  a  circle. 

Measure  the  radius  AC:   then  multiply  the 

square  of  the  radius  by  3.1416   (Mens.  Prob.  /i[ ^- 

X). 

1.  To  find  the  area  of  a  circular  piece  of  land,  of  which 
the  diameter  is  25  ch. 

Ans.  49.^  OR  14P. 

PROBLEM    VIH. 

115.  To  find  the  content  of  a  piece  of  ground  in  the 
form  of  an  ellipsis. 

c 

Measure  the  semi-axes  AE,  CE.    Then 
multiply  them  together,  and  their  product     ^f     ^ 
by  3.1416. 

1.  To  find  the  area  of  an  elliptical  piece  of  ground,  of 
which  the  transverse  axis  is  16.08  ch,  and  the  conjugate 
axis  9.72  ch. 

Ms.   12.^   iR  4P. 

Remark  I.  The  following  is  the  manner  of  tracing  an 
eUipse  on  the  ground,  when  the  two  axes  are  know^n. 

From  C,  one  of  the  extremities  of  the  conjugate  axis 
as  a  centre,  and  AE  half  the  transverse  axis  as  a  radius, 
describe  the  arc  of  a  circle  cutting  AB  in  the  two  points 
F  and   G :   these  points   are  called  the  foci  of  the  ellipse. 


CONTENT    OF    GROUND.  89 

Then,  take  a  tape,  the  length  of  which  is  equal  to  AB, 
and  fasten  the  two  ends,  one  at  the  focus  jP,  the  other  at 
the  focus  G.  Place  a  pin  against  the  tape  and  move  it 
around,  keeping  the  tape  tightly  stretched :  the  extremity 
of  the  pin  will  trace  the  curve  of  the  ellipse. 

Remark  II.  In  determining  the  content  of  ground,  in 
the  examples  which  have  been  given,  the  linear  dimen- 
sions have  been  taken   in  chains   and  decimals  of  a  chain 

If  the  linear  dimensions  were  taken  in  terms  of  any  other 
unit,  they  may  be  readily  reduced  to  chains.  For,  a  chain 
is  equal  to  4  rods,  equal  to  22  yards,  equal  to  66  feet 
Hence, 

1st.  Rods  may  he  reduced  to  chains  and  the  decimal  of  a 
chain,  by  dividing  by  4. 

2d.  Yards  may  be  reduced  to  chains  and  the  decimal  of  a 
chain,  by  dividing  by  22. 

3d.  Feet  may  be  reduced  to  chains  and  the  decimal  of  a 
chain,  by  dividing  by  Q6. 

Remark  III.  If  it  is  thought  best  to  calculate  the  area, 
without  reducing  the  linear  dimensions  to  chains,  the  re- 
sult  can  be  reduced  to  acres. 

1st.  By  dividing  it  by  160  when  it  is  in  square  rods  (Art. 
107). 

2d.  By  dividing  it  by  4840  lohen  it  is  in  square  yards 
(Art.   107). 

2d.  By  dividing  it  by  43560  when  it  is  in  square  feet 
(Art.   107). 

OF    LAYING    OUT    AND    DIVIDING    LAND. 

116.  The  surveyor  is  often  required  to  lay  off  a  given 
quantity  of  land,  in  such  a  way  that  its  bounding  lines  shall 
form  a  particular  figure,  viz.,  a  square,  a  rectangle,  a  tri- 
angle, &c.  He  is  also  often  called  upon  to  divide  given 
pieces  of  land  into  parts  containing  given  areks,  or  bearing 
certain  relations  with  each  other. 

The  manner  of  making  such  divisions  must  always  de- 
pend on  a  judicious  application  of  the  principles  of  g:eom- 
etry  to  the  particular  case. 


90  ELEMENTS    OF    SURVEYING. 

If,  for  example,  it  were  required  to  lay  out  an  acre  of 
ground  in  a  square  form,  it  would  first  be  necessary  to 
find,  by  calculation,  the  side  of  such  a  square,  and  then  to 
trace,  on  the  ground,  four  equal  lines  at  right  angles  to  each 
other. 

PROBLEM    I. 

117.  To  lay  out  a  given  quantity  of  land  in  a  square  form. 

Reduce  the   given   area  to   square   chains ,   or  square  rods 
then  extract  the  square  root,  and  the  result  will  be  the  side  oj 
the  required  square.      This  square  being  described  on  the  groundy 
will  be  the  figure  required. 

1.  To  trace  a  square  which  shall  contain    15.^  oR  12P 
First,      .      15A  =  60  R=2i00  P 

Add        .         .         .  12  P;   hence, 

15*4  OR  12  P=2412  P;    the    square    root    of 
which  is  49.11. 

Therefore,  if  a  square  be  traced  on  the  ground,  of  which 
the  side  is  49.11  rods,  it  will  be  the  required  figure. 

2.  To  trace  a  square  which  shall  contain  176^  iR  24P. 
First,      .        176.^=1760     square  chains, 

1R=        2.5        "  " 

24  P=        1.5       "         "        ;  hence, 
176.^  iR  24P=1764      square    chains:     the    square 
root  of  which  is  42.     Hence,  if  a  square  be  traced  on  the 
ground,  of  which  the  side  is  42  ch,  it  will  be  the  required 
figure. 

PROBLEM    II. 

118.  To  lay  out  a  given  quantity  of  land  in  a  rectangular 
form,  having  one  of  its  sides  given. 

Divide  the  given  area,  reduced  to  square  chains  or  square 
rods,  by  the  given  side  of  the  required  rectangle,  and  the  quo- 
tient will  be  the  other  side.  Then  trace  the  rectangle  on  the 
ground. 

1.  To  lay  oflf  240  acres  in  a  rectangular  form,  one  of  the 
sides  being  given,  and  equal  to  80  rods. 

First,     240.^  =  2400  square  chains  =  38400  square  rods. 

Then,  80)38400(480  rods  ;  which  is  the  required  side 
of  the  rectangle. 


OF    THE    COMPASS.  91 

119.  A  great  number  of  similar  problems  might  be  pro- 
posed. The  solution  of  them  does  not,  however,  properly 
belong  to  surveying.  The  laying  out  of  the  ground,  and 
the  tracing  of  lines,  after  the  figure  and  area  have  been 
determined,  are  the  only  parts  which  appertain  to  a  practical 
treatise.  The  manner  of  tracing  lines  having  been  already 
explained,  it  seems  unnecessary  to  add  the  numerous  ex- 
amples often  given  under  this  head  of  the  subject. 


.     CHAPTER   IV. 

Of  the  Surveying  Compass. — Of  Surveying  with  the  Compass. — 
Of  the  Plane-Tahle. 

120.  Before  considering  the  principles  involved  in  the 
method  of  surveying  now  to  be  explained,  it  will  be  neces- 
sary to  describe  the  instrument  principally  used  in  the  field, 
and  which  is  called 

THE  CIRCUMFERENTER,  OR  SURVEYOR'S  COMPASS. 

PL  2,  Fig.  2.  This  instrument  consists  of  a  compass-box 
DCE,  a  magnetic  needle,  a  brass  plate  AB,  from  twelve 
to  fourteen  inches  long,  two  plain  sights,  AF  and  J5G,  one 
of  which  is  more  fully  shown  in  Fig.  3 ;  and  a  stand,  which 
is  sometimes  a  tripod,  and  sometimes  a  single  staff  pointed 
with  iron  at  the  lower  end,  so  that  it  may  be  placed  firmly 
in  the  ground. 

The  open  sights,  AF  and  BG,  are  placed  at  right  angles 
to  the  plate  AB,  and  fastened  to  it  firmly  by  the  screws 
a  and  6.  In  each  sight  there  is  a  large  and  small  aperture 
or  slit ;  the  larger  aperture  being  above  the  smaller  in  one 
of  the  sights,  and  below  it  in  the  other.  A  hair  or  thread 
of  silk  is  drawn  vertically  through  the  middle  of  the  large 
aperture,  as  shown  in  Fig.  3. 

The  compass-box  DCE  is  circular,  and  generally  about 
six  inches  in  diameter.  At  the  centre  is  a  small  pin,  on 
which  the  magnetic  needle  is  poised.     This  needle,  if  allowed 


92  ELEMENTS    OF    SURVEYING. 

to  turn  freely  around  the  point  of  support,  will  settle  to  a 
state  of  rest :  the  direction  which  it  then  indicates,  is  called 
the  magnetic  meridian. 

Jn  the  interior  of  the  compass-box,  there  is  a  graduated 
circle  divided  to  degrees,  and  sometimes  to  half  degrees  :  the 
degrees  are  numbered  from  the  extremities  of  the  diameter 
JS*S,  both  ways  to  90". 

The  length  of  the  magnetic  needle  is  a  little  less  than 
the  diameter  of  the  graduated  circle,  so  that  the  needle  can 
move  freely  around  its  centre,  within  the  circle,  and  its  posi- 
tions be  noted  on  the  graduated  arc. 

The  compass-box  is  turned  about  its  centre,  without  moving 
the  plate  AB,  by  means  of  the  milled  screw  L:  it  is  fast- 
ened to  the  plate  AB,  by  the  screw  P. 

In  using  the  compass,  it  is  important  to  ascertain  the 
exact  angle  which  may  be  included  between  the  magnetic 
meridian  and  the  direction  that  may  be  given  to  the  line 
drawn  through  the  eye  and  the  sights  AF  and  BG. 

To  effect  this,  a  small  arc  HI  is  described  on  the  bar 
ABi  having  its  centre  at  the  centre  of  the  compass-box. 
This  arc  is  divided  to  degrees,  and  sometimes  to  the  parts 
of  a  degree.  A  vernier  is  also  used,  which  is  permanently 
attached  to  the  compass-box. 

When  the  0  point  of  this  vernier  coincides  with  the  0 
point  of  the  graduated  arc  HI,  the  line  of  the  compass-box 
marked  J^'S,  has  the  same  horizontal  direction  as  the  line 
along  which  the  sights  are  directed. 

Now,  supposing  the  0  of  the  vernier  to  coincide  with  the 
0  of  the  arc  HI,  if  the  end  of  the  needle  does  not  stand 
at  one  of  the  lines  of  division  of  the  graduated  circle,  let 
the  whole  degrees  be  read.  Then,  turn  the  compass-box 
by  means  of  the  screw  L,  until  the  needle  points  exactly  to 
the  line  which  marked  the  whole  degrees:  the  space  passed 
over  by  the  0  of  the  vernier,  shows  the  minutes  that  are  to 
be  added. 

OP  SURVEYING  WITH  THE  COMPASS. 

121.  The  line  about  which  the  earth  revolves  is  called  its 
axis;  and  the  two  points  in  which  the  axis  meets  the  surface 
of  the  earth  are  called  the  poles. 


WITH    THE    COMPASS.  93 

122.  A  meridian  is  a  line  traced  on  the  surface  of  the 
earth,  which  would,  if  sufficiently  produced  in  both  direc- 
tions, pass  through  the  poles.  Hence,  all  the  meridian  lines 
intersect  each  other  at  the  two  poles. 

Tlie  poles,  however,  are  so  distant  from  each  other,  that 
no  sensible  error  will  arise  in  supposing  the  meridians  to  be 
parallel ;  and  since,  in  all  the  surveys  made  with  the  compass, 
the  surface  of  the  ground  is  regarded  as  a  horizontal  plane, 
the  n^pridians  are  represented  by  horizontal  and  parallel  lines. 

123.  When  the  compass  is  placed  on  its  stand,'  and  the 
needle  is  allowed  to  settle  to  a  state  of  rest,  the  direction  it 
assumes  has  been  named  the  magnetic  meridian.  Although 
this  line  is  different  from  the  true  meridian,  yet  in  the  sur 
veys  irade  with  the  compass,  Ave  shall  take  for  the  meridian 
that  line  which  is  determined  by  the  direction  of  the  mag- 
netic needle. 

124.  If  the  right  hand  be  turned  towards  the  point  where 
the  sun  rises,  the  direction  pointed  by  the  farthest  end  of  the 
needle  is  called  north;  the  direction  shown  by  the  nearest 
end  is  called  south,  and  the  line  thus  indicated  is  called  a 
north  and  south  line,  as  well  as  a  meridian. 

125.  A  line  perpendicular  to  the  meridian  is  called  an  east 
and  west  line  :  the  east  point  being  on  the  right  hand,  and 
the  west  on  the  left. 

126.  A  line  traced  or  measured  on  the  ground,  is  called  a 
course ;  and  the  angle  which  this  line  makes  with  the  meri- 
dian passing  through  the  point  of 
beginning,  is  called  the  hearing. 

Thus,  if  we  start  from  the  point 
A,  and  measure  in  the  direction 
AB,  the  line  AB  is  the  course, 
and  the  angle  J>CAB  is  the  bear- 
ing. 

s 

When  the  course,  like  AB,  falls  between  the  north  and 
east  points,  the  bearing  is  read,  north  46®  east,  and  is  writ- 
ten, N  46°  E 


94 


ELEMENTS    OF    SURVEYING. 


Wlien  the  course,  like  j2C,  falls  between  the  north  and 
west  points,  the  bearing  is  read,  north  30"  west,  and  is 
written,  N  30°  W. 

When  the  course,  like  SF, 
falls  between  the  south  and  east 
points,  the  bearing  is  read,  south 
70"  east,  and  is  written,  S  70°  E. 

When  the  course,  like  AD, 
falls  between  the  south  and  west 
points,  the  bearing  is  read,  south 
70°  west,  and  is  written,  S  70° 
W. 

A  course  which  runs  due  north,  or  due  south,  is  desig 
nated  by  the  letter  N  or  S  :   and  one  which  runs  due  east, 
or  due  west,  by  the  letter  E  or  W. 

127.  If,  after  having  passed  over  a  course,  the  bearing 
oe  taken  to  the  back  station,  this  bearing  is  called  the  back 
sight,  or  reverse  bearing. 

128.  The  perpendicular  distance  between  the  east  and  west 
lines,  drawn  through  the  extremities  of  a  course,  is  called  the 
northing  or  southing,  according  as  the  course  is  run  towards 
the  north  or  south.  This  distance  is  also  called  the  difference 
of  latitude,  or  simply  the  latitude,  because  it  shows  the  dis- 
tance which  one  of  the  points  is  north  or  south  of  the  other. 


Thus,  in  running  the  course  from  A 
to  B,  JIC  is  the  difference  of  latitude, 
north. 


c 


W- 


A 


H 


■y'F 


^E 


129.  The  perpendicular  distance  be- 
tween the  meridians  passing  through  the 
extremities  of  a  course,  is  called  the  de- 
parture  of  that  course,  and  is  east  or  west,  ^ 
according  as  the  course  lies  on  the  east  or  west  side  of  the 
meridian  passing  through  the  point  of  beginning. 

Thus,  in  running  the  course  AB,  CB  is  the  departure,  east. 

130.  It  will  be  found  convenient,  in  explaining  the  rules 
for  surveying  with  the  compass,  to  attribute  to  the  latitudes 
and  departures  the  algebraic  signs,  -\-  and  —  ;  which  are 
read  plus  and  minus. 

We  shall,   therefore,  consider   every  northing  as  affected 


WITH    THE    COMPASS. 


95 


with  the  sign  -f-j  ^^^  every  southing  as  affected  with  the 

sign   — .     We  shall  also  consider  every  easting  as  affected 

with  the  sign  +,  and  every  westing  as  affected  with  the 
sign  — . 

131.  The  meridian  distance  of  a  point  is  the  perpendicular 
let  fall  on  the  meridian,  from  which  the  distance  is  estimated. 
This  meridian  is  called  the  assumed  meridian.  Thus,  if  the 
distance  be  estimated  from  NS,  BC  will  be  the  meridian 
distance  of  the  point  B. 

132.  The  meridian  distance  of  a  Hue,  is  the  distance  of  the 
middle  point  of  that  line  from  an  assumed  meridian  :  and  is 
east  or  west,  according  as  this  point  lies  on  the  east  or  west 
side  of  the  assumed  meridian.  Thus,  FG  drawn  through 
the  middle  point  of  AB,  is  the  meridian  distance  of  the 
line  AB. 

The  sign  +  will  always  be  given  to  the  meridian  distance 
of  a  point  or  line,  when  it  lies  on  the  east  of  the  assumed 
meridian,  and  the  sign  — ,  when  it  lies  on  the  w^est. 

1 33.  When  a  piece  of  ground  is  to  be  surveyed,  we  begin 
at  some  prominent  corner  of  the  field,  and  go  entirely  around 
the  land,  measuring  the  lengths  of  the  bounding  lines  with 
the  chain,  and  taking  their  bearings  with  the  compass.  It 
is  not  material  whether  the  ground  be  kept  on  the  right  hand 
or  on  the  left,  and  all  the  rules  deduced  for  one  of  the  cases, 
are  equally  applicable  to  the  other.  To  preserve,  however, 
an  uniformity  in  the  language  of  the  rules,  we  shall  suppose 
the  land  to  be  always  kept  on  the  right  hand  of  the  sur- 
veyor. 


Let  ABCD  be  a  piece  of  ground 
to  be  surveyed,  A  the  point  w^here 
the  w^ork  is  to  be  begun,  and  NS  a 
meridian. 

On  a  sheet  of  paper,  rule  three 
columns,  as  in  next  page,  and  head 
them  stations,  bearings,  distances. 


96 


ELEMENTS    OF    SURVEYING. 


FIELD    NOTES. 


Stations. 

Bearings. 

Distances. 

1 

N    3ii°  W 

10. 

2 

N   62f   E 

9.25 

3 

S    36°      E 

7.60 

4 

S    451"    W 

10.40 

Place  the  compass  at  A  and  take 
the  bearing  to  B^  which  is  PAB : 
suppose  this  angle  has  been  found 
to  be  3li°.     The  bearing  from  A  to 
B  is    then   N  3li°  W.     Enter  this    B 
bearing  in  the   field  notes  opposite  xat 
station  1.     Then  measure  the  dis- 
tance from  A  to  B^  which  we  will 
suppose  to  be  10  ch,  and  insert  that 
distance   opposite  station   1,  in  the    H 
column  of  distances. 


We  next  take  the  bearing  from  B  to  C^  N  62 f°  E,  and  then 
measure  the  distance  J?C  =  9  ch  25  1,  both  of  which  we  insert 
in  the  notes  opposite  station  2. 

At  station  C  we  take  the  bearing  to  Z),  S  36°  E,  and  then 
measure  the  distance  CD  =  1  ch  60  1,  and  place  them  in  the 
notes  opposite  station  3. 

At  D  we  take  the  bearmg  to  .^,  S  451®  W,  and  then  mea- 
sure the  distance  DA  =  io  ch  40  1.  We  have  thus  made  all 
the  measurements  on  the  field  which  are  necessary  to  deter- 
mine the  content  of  the  ground. 

134.  Remark  I.  The  reverse  bearing,  or  back  sight,  from 
B  to  A,  is  the  angle  ABH ;  and  since  the  meridians  NS  and 
HG  are  parallel,  this  angle  is  equal  to  the  bearing  ^AB. 
The  reverse  bearing  is,  therefore,  S  31^°  E. 

The  reverse  bearing  from  C,  is  S  62i''  W:  that  is,  it  is  the 
angle  ICB=:GBC. 


WITH    THE    COMPASS.  97 

And  generally,  a  reverse  hearing,  or  hack  sight,  is  always 
equal  to  the  forward  hearing,  and  differs  from  it  in  hoth  of  the 
letters  by  which  it  is  designated. 

135.  Remark  II.  In  taking  the  bearings  with  the  com- 
pass, there  are  two  sources  of  error.  1st.  The  inaccuracy  of 
the  observations  :  2d.  Local  attractions,  or  the  derangement 
which  the  needle  experiences  when  brought  into  the  vicinity 
of  iron-ore  beds,  or  any  ferruginous  substances. 

To  guard  against  these  sources  of  error,  the  reverse  bearing 
should  be  taken  at  every  station  :  if  this  and  the  forward 
bearing  are  of  the  sartie  value,  the  work  is  probably  right ; 
but  if  they  differ  considerably,  they  should  both  be  taken 
again. 

136.  Remark  III.  In  passing  over  the  course  AB,  the 
northing  is  found  to  be  HB,  and  the  departure,  which  is  west, 
is  represented  by  AH.  Of  the  course  BC,  the  northing  is 
expressed  by  BG,  and  the  departure,  which  is  east,  by  GC. 
Of  the  course  CD,  the  southing  is  expressed  by  CI,  and  the 
departure,  which  is  east,  by  CF.  Of  the  course  DA,  the 
southing  is  expressed  by  KA,  and  the  departure,  which  is  west, 
by  DK.  It  is  seen  from  the  figure,  that  the  sum  of  the 
northings  is  equal  to  HB-{-BG  =  IIG ;  and  that  the  sum  of 
the  southings  is  equal  to  CI-\-KA  =  PA  =  HG  :  hence,  the  sum 
of  the  northings  is  equal  to  the  sum  of  the  southings. 

If  we  consider  the  departures,  it  is  apparent  that  the  sum 
of  the  eastings  is  equal  to  GC-\-CF=GF ;  and  that  the  sum 
of  the  westings  is  equal  to  AH-\-DK=  GF :  hence  also,  the 
sum  of  the  eastings  is  equal  to  the  sum  of  the  westings.  We 
therefore  conclude,  that  when  any  survey  is  correctly  made, 
the  sum  of  the  northings  will  he  equal  to  the  sum  of  the  southings, 
and  the  sum  of  the  eastings  to  the  sum  of  the  westings. 

It  would  indeed  appear  plain,  even  without  a  rigorous  de- 
monstration, that  after  having  gone  entirely  round  a  piece  of 
land,  the  distance  passed  over  in  the  direction  due  north,  must 
be  equal  to  that  passed  over  in  the  direction  due  south  ;  and 
the  distance  passed  over  in  the  direction  due  east,  equal  to 
that  passed  over  in  the  direction  due  west. 

Having  now  explained  the  necessary  operations  on  the 
field,  we  shall  proceed  to  show  the  manner  of  computing  the 
content  of  the  ground.     We  shall  first  explain 


c 

-f;;^ 

G 

r 

A 

\L 

98  ELEMENTS    OF    SURVEYING, 


THE    TRAVERSE    TABLE. 

137.  This  table  shows  the  difference  of  latitude,  and  the 
departure,  corresponding  to  any  bearing,  aftd  for  courses  less 
than  100. 

Let   JIB   denote   any   course,   NS    the  t^ 

meridian,  and  N.^jB  the  bearing  of  AB. 
Then  will  AC  h&  the  difference  of  lati- 
tude, and  BC  the  departure.  vAv: 

It  is  evident  that  the  course,  the  cKffer- 
ence  of  latitude,  and  the  departure,  are 
respectively,  the  hypothenuse,  tlie  base, 
and    the  perpendicular  of  a  right-angled  ^ 

triangle,  of  which  the  bearing  is  the  angle  at  the  base. 

If  there  he  two  hearings,  which  are  complements  of  each  other, 
or  of  which  the  sum  is  90°,  the  difference  of  latitude  correspond- 
ing to  the  one,  will  he  the  departure  of  the  other,  and  reciprocally. 
For,  if  BC  were  a  meridian,  CBA  which  is  the  complement 
of  CAB,  would  be  the  bearing  of  BA ;  CB  would  be  the 
difference  of  latitude,  and  CA  would  be  the  departure. 

In  the  traverse  table,  the  figures  at  the  top  and  bottom 
of  each  page,  show  the  bearings  to  degrees  and  parts  of  a 
degree  ;  and  the  columns  on  the  left  and  right,  the  distances 
to  which  the  latitudes  and  departures  correspond. 

If  the  bearing  is  less  than  45°,  the  angle  will  be  found  at 
tlie  top  of  the  page  ;  if  greater,  at  the  bottom.  Then,  if  the 
distance  is  less  than  50,  it  will  be  found  in  the  column  "dis- 
tance," on  the  left  hand  page  ;  if  greater  than  50,  in  the 
corresponding  column  of  the  right  hand  page.  The  table  is 
calculated  only  to  quarter  degrees,  for  the  bearings  cannot 
be  relied  on  to  smaller  parts  of  a  degree. 

The  latitudes  or  departures  of  courses  of  different  lengths, 
but  which  have  the  same  bearing,  will  be  proportional  to  the 
lengths  of  the  courses.  Thus,  in  the  last  figure,  the  lati- 
tudes AG,  AC,  or  the  departures  GF,  CB,  are  to  each  other 
as  the  courses  AF,  AB. 

Therefore,  when  the  distance  is  greater  than  100,  it  may 
be  divided  by  any  number  w^hich  will  give  an  exact  quo- 
tient, less  than  100:  then  the  latitude  and   departure  being 


WITH    THE    COMPASS.  90 

found  and  multiplied  by  the  divisor,  the  products  will  be  the 
latitude  and  departure  of  the  whole  course.  It  is  also  plain, 
that  the  latitude  or  departure  of  two  or  more  courses,  hav- 
ing the  same  bearing",  is  equal  to  the  sum  of  the  latitudes 
or  departures  of  the  courses  taken  separately. 

Hence,  if  we  have  any  number  greater  than  lOO,  as  614, 
we  have  only  to  regard  the  last  figure  as  a  cipher,  and  recol- 
lect that,  610-}-4  =  614  ;  and  also,  that  the  latitude  and  de- 
parture of  610,  are  ten  times  greater,  respectively,  than  the 
latitude  and  departure  of  61  :  that  is,  equal  to  the  latitude 
and  departure  of  61  multiplied  by  10,  or  with  the  decimal 
point  removed  one  place  to  the  right. 

I.  To  find  the  latitude  and  departure  for  the  bearing  29i", 
and  the  course  614. 


Latitude  for  610    .    .    530.90 
Latitude  for       4    ...    3.48 


Latitude  for  614    .    .    534.38 


Departure  for  610  .  .  300.40 
Departure  for  4  .  .  1.97 
Departure  for  614    .    .    302.37 


In  this  example,  the  latitude  and  departure  answering  to 
the  bearing  29|°,  and  to  the  distance  61,  are  first  taken  from 
the  table,  and  the  decimal  point  removed  one  place  to  the 
right :  this  gives  the  latitude  and  departure  for  the  distance 
610;  the  latitude  and  departure  answering  to  the  same  bear- 
ing and  the  distance  4,  are  then  taken  from  the  table  and 
added. 

2.  To  find  the  latitude  and  departure  for  the  bearing  62^*, 
and  the  course  7855  chains. 


Latitude  for  7800  .  3602.00 
Latitude  for  55  .  .  25.40 
Latitude  for  7855    .    3627.40 


Departure  for  7800  .  6919.00 
Departure  for  55  .  .  48.79 
Departure  for  7855    .    6967.79 


Remark.  When  the  distances  are  expressed  in  whole 
numbers  and  decimals,  the  manner  of  finding  the  latitudes 
and  departures  is  still  the  same,  except  in  pointing  oflf  the 
places  for  decimals  :  but  this  is  not  diflScult,  when  it  is  re- 
membered that  the  column  of  distances  in  the  table,  may  be 
regarded  as  decimals,  by  removing  the  decimal  point  to  the 
left  in  the  other  columns. 


100  ELEMENTS    OF    SURVEYING. 

3.   To  find  the  latitude  and  departure  for  the  bearing  47f  •', 
and  the  course  37.67. 
Latitude  for  37.00    .   .    24.88 
Latitude  for        57    .   .    .     38 


Latitude  for  37.57    .  .    2  5.26 


Departure  for  37.00    .   .    27.39 
Departure  for        57    .   .  42 

Departure  for  37.57    .   .    27.81 


Of  Balancing  the  work. 

138.  The  use  of  the  traverse  table  being  explained,  we 
can  proceed  to  compute  the  area  of  the  ground. 

The  field  notes  having  been  completed,  rule  a  new  table, 
as  below,  with  four  additional  columns,  two  for  latitude,  and 
two  for  departure. 

Then  find,  from  the  traverse  table,  the  latitude  and  de- 
parture  of  each  course,  and  enter  them  in  the  proper  columns 
opposite  the  station. 

Then  add  up  the  column  of  northings,  and  also  the  column 
of  southings  :  the  two  sums  should  be  equal  to  each  other. 
If  they  are  not,  subtract  the  less  from  the  greater,  and  the 
remainder  is  called  the  error  in  latitude.     This  error  takes  the 
name  of  that  column  which  is  the  least.     For  example,  if 
the  sum  of  the  northings  is  less  than  the  sum  of  the  south- 
ings, the  error  is  called,  error  in  northing  :  but  if  the  sum  of 
the  southings  is  less  than  the  sum  of  the  northings,  the  error 
is  called,  error  in  southing.     We  find  the  error  for  eacli  par- 
ticular course  by  the  following  proportion. 
As  the   sum  of  the  courses 
Is  to  the  error  of  latitude, 
So  is  each  particular  course 
To  its  correction. 

The  error  of  each  course,  thus  found,  may  be  entered  in 
a  separate  column;  after  which,  add  it  to  the  latitude  of  the 
course,  when  the  error  and  latitude  are  of  the  same  name,  but 
subtract  it,  when  they  are  of  different  names.  This  will  make 
the  sum  of  the  northings  equal  to  the  sum  of  the  southings, 
and  is  called  balancing  the  work.  The  northings  and  south- 
ings, thus  corrected,  are  entered  in  columns  on  the  right, 
under  the  head,  balanced.  Having  done  this,  balance  the 
eastings  and  westings  in  the  very  same  manner.  The  dif- 
ference between  their  sums,  is  called  the  error  in  departure. 


WITH    THE    COMPASS. 


101 


For  an  example,  we  will  resume  the  same  example  that 
has  already  been  considered. 




' 

Dislan- 

LATITUDE. 

DEPARTURE. 

BALANCED.                  ] 

1 

Bearings. 

N. 

S. 

E. 

+ 

W. 

Cor. 
Lau 

Cor. 
Dep. 

N. 
+ 

S. 

E. 
+ 

W. 

N3U0W 

10. 

8.53 

5.22 

+0.18 

+0.02 

8.71 

6.24 

2 

3 

N  62^0  E 

9.25 

4.23 

6.15 

7.29 

13.44 
12.76 

8.22 

7.41 

+0.17 

-0.01 

4.40 

8.21 

SSS^'E 

7.60 

4.47 

-0.14 

-00.1 

6.01 

4.46 

7.43 
12.67 

4 

S  45i«  W 

10.40 

-0.19 

+0.02 

7.10 

Sum  ol'  courses,  37.23 

12.76 

12.69 
12.63 

12.63 

13.11 

12.67 

Error  in  Northing,  . 

.     . 

0.68 

0.06    Error  in  Westing. 

As  37.25  :  0.68 
As  37.25  :  0.68 
As  37.25  :  0.68 
As   37.25  :  0.68 


10        :  0.18    error  in  lat.  of  1st  course. 

9.25  :  0.17    error  in  lat.  of  2d  course. 

7.60  :  0.14*  error  in  lat.  of  3d  course, 
10.40  :  0.19    error  in  lat.  of  4th  course. 


As  37.25  :  0.06  :  :  10        :  0.02*  error  in  dep.  of  1st  course. 

A.S  37.25  :  0.06  :  :     9.25  :  0.01     error  in  dep.  of  2d  course. 

A.S  37.25  :  0.06  :  :     7.60  :  O.Ol    error  in  dep.  of  3d  course. 

As  37.25  :  0.06  :  :  10.40  :  0.02    error  in  dep.  of  4th  course. 

139.  Remark  I.  In  finding  the  error  in  latitude  or  de- 
parture, for  a  particular  course,  the  last  figure  is  sometimes 
doubtful ;  in  which  case  it  is  best  to  mark  it,  as  in  the  third 
proportion  for  error  in  latitude,  and  the  first  for  error  in  depar- 
ture ;  and  then,  if  the  figures  taken  do  not  balance  the  work, 
let  each  be  increased  or  diminished  by  1. 

140.  Remark  II.  It  has  already  been  observed  (Art.  136), 
that  if  the  measurements  on  the  field  are  correctly  made,  the 
sums  of  the  northings  and  southings  will  be  equal  to  each 
other,  as  also  those  of  the  eastings  and  westings.  It  is  the 
opinion  of  some  surveyors,  that  when  the  error  in  latitude  or 
departure  exceeds  one  link  for  every  five  chains  of  the  courses, 
the  field  notes  ought  not  to  be  relied  on.  This,  perhaps,  is  a 
higher  degree  of  accuracy  than  can  be  attained.  The  error, 
however,  should  always  be  made  considerably  less  than  one 
link  to  a  chain. 


102  ELEMENTS  OF  SURVEYING. 

Of  the  double  meridian  distances  of  the  courses. 

141.  After  the  work  has  been  balanced,  the  next  thing 
to  be  done  is  to  calculate  the  double  meridian  distance  of 
each  course. 

For  this  purpose,  a  meridian  line  is  assumed,  lying  either 
wholly  without  the  land,  or  passing  through  any  point  within 
it.  It  is,  however,  most  convenient  to  take  that  meridian 
which  passes  through  the  most  easterly  or  westerly  station  of 
the  survey ;  and  these  two  stations  are  readily  determined  by 
inspecting  the  field  notes. 

Having  chosen  the  meridian,  let  the  station  through  which 
it  passes,  be  called  the  principal  station^  and  the  course  which 
begins  at  this  point,  the  first  course.  Care,  however,  must  be 
taken,  not  to  confound  this  with  the  course  which  begins  at  station 
1,  and  which  is  the  first  course  that  is  entered  in  the  field  notes. 

It  has  already  been  remarked  (Art.  132),  that  all  depar- 
tures in  the  direction  east,  are  considered  as  plus,  and  all 
departures  in  the  direction  west,  as  minus :  then,  through 
whatever  station  of  the  survey  the  assumed  meridian  be  taken, 
we  shall  have  for  the  calculation  of  the  double  meridian  dis- 
tances, the  following 

RULE. 

I.  The  double  meridian  distance  of  the  first  course  is  equal 
to  its  departure. 

II.  The  double  meridian  distance  of  the  next  course  is  equal 
to  the  double  meridian  distance  of  the  first  course,  plus  its  de- 
parture, plus  the  departure  of  the  second  course. 

III.  The  double  meridian  distance  of  the  third  course  is  equal 
to  the  double  meridian  distance  of  the  second,  plus  its  departure, 
plus  the  departure  of  the  third  course. 

IV.  ^nd,  the  double  meridian  distance  of  any  course  is  equal 
to  the  double  meridian  distance  of  the  preceding  course,  plus  its 
departure,  plus  the  departure  of  the  course  itself 

Remark.  It  should  be  recollected  that  plus  is  here  used 
in  its  algebraic  sense,  and  that  when  double  the  meridian 
distance  of  a  course  and  the  departure  which  is  to  be  added 
to  it,  are  of  different  names,  that  is,  one  east  and  the  other 
west,  they  will  have  contrary  algebraic  signs  ;  hence,  their 
algebraic  sum  will  be  expressed  by  their  difference,  with  the 
sign  of  the  greater  prefixed  to  it. 


WITH    THE    COMPASS. 


103 


Demonstration  of  the  Rule. 

Let  the  figure  JIB  CD,  which  we  i^ 
have  aheady  surveyed  with  the  com- 
pass, be  resumed.  By  inspecting 
the  field  notes,  it  will  be  seen  that 
B,  or  station  2,  is  the  most  westerly 
station.  Through  this  point  let  the 
assumed  meridian  NS  be  supposed 
to  pass.  Then,  B  will  be  the  princi- 
pal station,  and  BC  the  first  course. 
By  what  has  been  already  said,  every 
departure  towards  the  east  is  to  be 
considered  as  plus,  and  every  departure  towards  the  west,  as 
minus. 

Now,  since  p.  A:,   d  and  a,  are  the  middle  points  of  the 
courses  BC^  CD,  DA  and  AB,  we  have,  by  similar  triangles, 
2  qp=2  sx=sC =ihe  first  departure. 
2  Cr=2  hk  =  Cy  =  ih.e  second  departure. 
2fg=2  gA=Af=i[ie  third  departure. 
2  At=2  ab=  Ac  =ihe  fourth  departure. 
We  also  have, 

2  qp=sC=douh.  mer.  dis.  of  BC, 
2  qp+2  xC-{-2  Cr  =  2  A:n=doub.  mer.  dis.  of  CD.     ' 
2  kn-{-2  kh-2  gf=2  c?e=doub.  mer.  dis.  of  DA. 
2  de  —  2  gA  —  2  At =2  a6  =  doub.  mer.  dis.  of  AB. 
The  departure  of  the  courses  BC,  CD,  are  east,  and  there- 
fore positive  ;  while  the  departures  of  the  courses  DA,  AB, 
are  west,  and  consequently  negative. 

Since  the  course  of  reasoning  just  pursued  is  applicable  to 
all  figures,  we  may  regard  the  rule  as  demonstrated  for  every 
case  which  can  occur. 

Remark.  The  double  meridian  distance  of  the  last  course 
should  be  equal  to  the  departure  of  that  course.  A  verifi- 
cation of  the  work  is,  therefore,  obtained  by  comparing  this 
double  meridian  distance  with  the  departure  of  the  course. 

142.  To  apply  the  above  rule  to  the  particular  example 
already  considered,  rule  a  new  table,  as  below,  in  which  are 
entered  the  balanced  northings  and  southings,  and  the  bal- 
anced eastings  and  westings. 


104 


ELEMENTS    OF    SURVEYING. 


In  this  table  there  is  but  a  single  column  for  the  diflerence 
of  latitude,  and  a  single  column  for  the  departures.  The 
-|-  sign  shows  when  the  difference  of  latitude  is  north,  and 
the  —  sign,  when  it  is  south.  The  -j-  sign  also  shows  when 
the  departure  is  east,  and  the  —  sign,  when  it  is  west. 


Station*. 

Bearings. 

Distoncefc 

Dif.  Lat. 

Uep. 

D.  M.  D. 

1 

N3110W 

10. 

+8.71 

—5.24 

+  17.91 
Z7.43 
-5.24 

+5.24 

2* 

N  62|o  E 

9.25 

+4.40 

+8.21 

8.21 

1 

3 

S36°E 

7.60 

—6.01 

+4.46 

+8.21 
+8.21 

+4.46 

+20.88 

4 

S45ioW 

10.40 

—7.10 

—7.43 

3  7.43 

+17.91 

We  see,  from  inspecting  the  notes,  that  2  is  the  most 
westerly,  and  4  the  most  easterly  station.  Either  of  them 
may,  therefore,  be  taken  for  the  principal  station.  Let  us 
assume  2  for  the  principal  station,  and  distinguish  it  by  a 
star,  thus  *. 

Having  done  so,  we  enter  the  departure  8.21  in  the  column 
of  double  meridian  distances,  which  gives  the  double  meridian 
distance  of  the  first  course.  The  double  meridian  distances 
of  the  other  courses  are  calculated  according  to  the  rule ;  and 
as  the  last,  opposite  to  station  1,  is  equal  to  the  departure  of 
the  course,  the  work  is  known  to  be  right. 

Of  the  Area. 

143.  Having  calculated  the  double  meridian  distance  of 
each  course,  the  next  and  last  operation  for  finding  the  content 
of  the  ground,  is  explained  in  the  following 

RULE. 

I.  Multiply  the  double  meridian  distance  of  each  course  by 
its  northing  or  southing,  observing  that  like  signs  in  the  multi- 
plicand and  multiplier  give  plus  in  the  product,  and  that  unlike 
signs  give  minus  in  the  product. 

II.  Place  all  the  products  which  have  a  plus  sign  in  one 
column,  and  all  the  products  which  have  a  minus  sign  in  another. 

III.  *Bdd  up  each  of  the  columns  separately  and  take  their 
difference :  this  difference  will  be  double  the  area  of  the  land. 


WITH    THE    COMPASS. 


105 


Demonf^tration  of  the  Rule. 

N 

S 

Let  us  agaia  resume  the  example     ^ 


considering, 


B 


which  we   have    been 
and  write  the  difference  of  latitude    ^n 
and  the  double  meridian  distances  W 
of  the  courses,  in  the  following  table. 


stations. 

Dif.  of  Latitude. 

D.  M.  D. 

Area. 
+ 

Area. 

1 

~{-cB 

+25a 

2cAB 

2* 

-^Bs 

+  27P 

2BsC 

3 

-yD 

+  2n/i 

2ms  CD 

4 

-Df 

-f2ec/ 

2cmDJ 

It  is  now  evident,  that  cB  multiplied  by  2ba  =  cA,  wil 
give  double  the  area  of  the  triangle  cAB.  But  cB  and  ba 
are  both  plus  ;  hence,  the  product  will  be  plus,  and  must  be 
put  in  the  column  of  plus  areas.  Double  the  area  of  the 
triangle  BsC,  is  equal  to  Bs  multiplied  by  2qpf  which  pro- 
duct is  also  plus. 

The  area  of  the  trapezoid  msCD  is  equal  to  yD=ms  multi- 
plied by  nh  (Geom.  Bk.  IV,  Prop.  VII)  ;  hence,  double  the 
area  is  equal  to  yD  into  2nh.  But  since  yD  is  minus,  and 
2nh  plus,  it  follows  that  the  product  will  be  negative  ;  hence, 
it  must  be  placed  in  the  column  of  negative  areas. 

Double  the  area  of  the  trapezoid  cJlDm,  is  equal  to  Df=mc 
multiplied  by  2de  :  but,  since  Df  is  negative  and  2de  posi- 
tive, the  product  will  be  negative. 

It  is  now  evident  that  the  difference  between  the  two 
columns  is  equal  to  twice  the  content  of  the    figure  ABCD  * 


106 


ELEMENTS    OF    SURVEYING. 


and   as  the  same  may  "be  shown  for  any  figure  whatever, 
we  may  regard  the  rule  as  demonstrated  for  all  cases. 

We  will  now  make  the  calculations  in  numbers.     Having 
balanced  the  work,  we  can  place  it  in  the  following  table. 


1 
Sta. 

Bear. 

Dist. 

Dif.Lat. 

Dep. 

D.M.D. 

Area. 

+ 

Area. 

'       1 

N31i°W 

1 
10. 

+8.71 

-5.24 

+5.24 

45.6404 

1 

2* 

N  62f  E 

9.25 

+4.40 

+8.21 

+S.21 

36.1240 

3 

S  36"  E 

7.60 

—6.01 

+4.46 

+20.88 

125.4888 

4 

S45inV 

10.40 

—7.10 

—7.43 

+17.91 

127.1610 

81.7644  I    252.6498 
81.7644 


Area  in  square  chains, 
Dividing  by  10, 


d3rw.  8.^  2R   7P. 


2)170.8854 
85.4427 
8.54427 
4 


2.177( 


40 


7.08320 


Observing  in  the  field  notes  that  station  2  is  the  most 
westerly  point  of  the  land,  we  assume  the  meridian  which 
passes  through  this  point,  as  the  one  from  which  the  me- 
ridian distances  are  calculated.  We  mark  the  principal  sta- 
tion with  a  star. 

Opposite  station  2,  we  enter,  in  the  column  of  double  me- 
ridian distances,  headed  D.  M.  D.,  the  departure  of  the  course 
from  2  to  3,  which  is  the  double  meridian  distance  of  that 
course,  and  plus.  To  this  we  add  the  departure  of  the 
course,  and  also  the  departure  of  the  next  course  :  their  sum 
is  the  double  meridian  distance  of  the  course  from  3  to  4. 

To  the  last  sum  add  the  departure  opposite  station  3,  and 
the  minus  departure  opposite  station  4 :  their  algebraic  sum  is 
the  double  meridian  distance  from  4  to  1. 

To  the  last  sum  add  tne  last  departure,  which  is  minus, 
also  the  next  departure  which  is  likewise  minus  :  this  will 
give  the  double  meridian  distance  of  the  course  from  l  to  2, 
which  is  also  equal  to  its  departure. 

Then  forming  the  products,  adding  them  together,  taking 
their  difTerence,  and  dividing  it  by  2,  according  to  the  rule,  we 
obtain  the  content  of  the  ground. 


WITH    THE    COMPASS. 


107 


144.  It  only  remains  to  make  a 
plot  of  the  ground. 

For  this  purpose,  draw  any  line, 
as  NS,  to  represent  the  meridian 
passing  through  the  principal  sta- 
tion, on  which  take  any  point,  as 
Bt  to  represent  that  station. 


FIRST    METHOD    OF    PLOTTING. 


Having  fixed  upon  the  scale  on  which  the  plot  is  to  be 
made,  lay  off  from  B  on  the  meridian,  a  distance  Bs  equal  to 
the  difference  of  latitude  of  the  first  course,  and  at  s  erect  a 
perpendicular  to  the  meridian,  and  make  it  equal  to  the  de- 
parture of  the  first  course  :  then  draw  BC,  which  will  be  the 
first  course. 

Through  C  draw  a  meridian,  and  make  Cf  equal  to  the 
difference  of  latitude  of  the  second  course,  and  through  / 
draw  a  perpendicular  /D,  and  make  it  equal  to  the  depar- 
ture of  the  second  course :  draw  CD,  and  it  will  be  the 
second  course. 

Lay  down,  in  the  same  manner,  the  courses  DA  and  AB, 
and  the  entire  plot  will  be  completed. 

SECOND    METHOD    OF    PLOTTING. 

The  work  may  be  plotted  in  another  manner,  thus.  At 
the  principal  station  B,  lay  off  an  angle  equal  to  the  bearing 
from  B  to  C,  which  will  give  the  direction  of  BC.  Then, 
firom  the  scale  of  equal  parts,  make  BC  equal  to  the  first 
course :  this  will  give  the  station  C. 

Through  C  draw  a  meridian,  and  lay  off  an  angle  equal  to 
the  bearing  from  C  to  D,  and  then  lay  off  the  course  CD. 
Do  the  same  for  the  bearing  at  D  and  the  course  DA;  also, 
for  the  bearing  at  A  and  the  course  AB,  and  a  complete  plot 
of  the  ground  will  thus  be  obtained.  If  the  work  is  all  right, 
the  last  line  AB  will  exactly  close  the  figure.  This  plot  is 
made  on  a  scale  of  40  chains  to  an  inch. 


108 


ELEMENTS    OF    SURVEYING. 


2.  It  is  required  to  determine  the  content  and  plot  of  a  piece 
of  land,  of  which  the  following  are  the  field  notes,  viz. 


stations.          1           Bearing           |           DUtancea. 

1            1     N46i«W    1        20  ch. 

2           1     NSll^'E      1        13.80 

3           1           E            1       21.25 

4           1       S560E      1       27.60 

5            1      S  33iO  W     1        18.80 

6           1     N  741°  W    1       30.95 

CALCULATION. 


sta- 
tions 

Bearing.. 

Dist 

Dif. 

Lat. 

Dep. 

BALANCED. 

D.M.D. 

+ 

AREA. 
+ 

AREA. 

N 
+ 

S 

E 

4- 

W 

Lat 

Dep. 

1 

N461«W 

20  ch 

13.77 

14.51 

+13.88 

—14.56 

14.56 

202.0928 

2* 

N51|°  E 

13.80 

8.54 

10.84 

+8.61 

+10.81 

10.81 

93.0741 

3 

E 

21.25 

21.25 

+21.20 

42.82 

.... 

4 

S    56°  E 

27.60 

15.44 

22.88 

-15.29 

+22.82 

86.84 

1327.7836 

5 

S  33|0  W 

18.80 

15.72 

10.31 

—15.63 

- 10.36 

99.30 

1552.0590 

6 

N74i«W 

30.95 

8.27 

29.83 

+8.43 

-29.91 

59.03 

497.6229 

loTcoor*.. .  132.40130.68131.16.54.97154.65 
30.5854.65 


792.7898I2879.842S 
792.7898 


Error  in  Nerthing.  .  .     0.6810.32    Error  in  Weeting  2)2087.0528 

Ans.  104A  liJ  16P 1043.6264 


Plot  of  the  above  example. 


Remark.     Wlien  a  bearing  is  due  east  or  west,  the  error 
in  latitude  is  nothing,  and  the  course  must  be  subtracted  from 


WITH    THE    COMPASS. 


109 


the  sum  of  the  courses,  before  balancing  the  columns  of  lati- 
tude. In  the  last  example,  the  3d  bearing  is  due  east,  and 
the  first  term  of  the  several  proportions  for  error  in  latitude, 
was  132.40-21.25  =  111.15. 

In  like  manner,  if  a  bearing  is  due  north  or  south,  the  error 
in.  departure  is  nothing  ;  and  the  sum  of  the  courses  must  be 
diminished  by  this  course,  before  balancing  the  columns  of 
departure. 

3.  Required  the  content  and  plot  of  a  piece  of  land,  of 
which  the  following  are  the  field  notes. 


Stations 

Bearings. 

Distances. 

1 

S  34"  W 

3.95  ch. 

2 

s 

4.60 

3 

S  361° E 

8.14 

4 

N59i°E 

3.72 

5 

N25<'E 

6.24 

6 

N  16°  W 

3.50 

7 

NG5»W 

8.20 

Ms.    10^   OR  6P. 


4.  Required  the  content  and  plot  of  a  piece  of  land,  from 


the  following  field  notes. 


stations. 

Bearing. 

Distances. 

1 

S40°W 

70  rods 

2 

N45MV 

89 

3 

N  36»E 

125 

4 

N 

54 

5 

S  8i»E 

186 

6 

S  8MV 

137 

7 

W 

130 

Ms.    207^  ZR  33P- 


no 


ELEMENTS    OF    SURVEYING. 


6.  Required  the  content  and  plot  of  a  piece  of  land,  from 
the  following  field  notes. 


stations. 

Bearings. 

Distances. 

1 

S  40i»E 

31.80  ch. 

2 

N  54»E 

2.08 

3 

N  2910  E 

2.21 

4 

N  28|o  E 

35.35 

5 

N57°W 

21.10 

6 

S47«>W 

31.30               1 

dns.   92.^  3R  32P. 

6.  Required  the  area  of  a  survey  of  which  the  following 
are  the  field  notes. 


Stations. 

Bearings. 

Distances. 

2 

East. 

4.00  ch. 

3 

N9oE 

4.00 

4 

S690E 

5.56 

6 

S360E 

7.00 

6 

S420W 

4.00 

7 

S75oW 

10.00 

8 

N  39«  W 

7.50 

1 

N420E 

5.00 

If,  in  this  example,  we  assume  1  as  the  principal  station, 
the  double  meridian  distances  will  all  be  plus,  and  the  positive 
area  will  exceed  the  negative. 

In  balancing  we  shall  find  the  area  in  southing  to  be 
.28  ch.  and  in  westing  .22  ch.  The  area  is  ISA  OR  IIP. 
It  should  however  be  remarked,  that  in  all  the  examples  the 
answers  may  be  slightly  varied  by  distributing  the  corrections. 


WITH    THE    COMPASS. 


Ill 


7.  What  is  the  area  of  a  survey  of  which  the  following  are 
the  field  notes. 


Stations. 

Bearings. 

Distances. 

1 

N  75"  00^  E 

54.8  rods. 

2 

N  20"  30'  E 

41.2 

3 

East. 

64.8 

4 

S  33"  30^  W 

141.2 

5 

S  76°  00^  W 

64.0 

6 

North. 

36.0 

7 

S  84°  00^  W 

46.4 

8 

Nss'  15' W 

46.4 

9 

N36°45'E 

70.8 

10 

N  22°  30'  E 

56.0 

11 

S  76°  45'  E 

48.0 

12 

S  15°00' W 

43.4 

13 

S  16°45'W 

40.5 

In  this  survey  4  is  the  most  easterly  and  9  the  most  we^i- 
erly  station.  The  area  is  equal  to  110^  2R  23P.  It  may 
vary  a  little,  on  account  of  the  way  in  which  the  balancing  is 
done. 


112 


ELEMENTS    OF    SURVEYING. 


8.  What  is  the  content  of  a  piece  of  land  of  which  the  fol- 
lowing are  the  field  notes. 


Stations. 

Bearings. 

Distances. 

1 

S75»W 

13.70  ch. 

2 

S  201°  W 

10.30 

3 

West. 

16.20 

4 

N  331°  E 

35.30 

5 

N  76»  E 

16.00 

C 

South. 

9.00 

7 

N84°E 

11.60 

8 

S  53J»E 

11.60 

9 

S  36J°  W 

19.20 

10 

S22l«W 

14.00 

11 

N  76^  W 

12.00 

12 

N  15»E 

10.85 

13 

N  1GJ»E 

10.12 

In  lliis  survey  4  is  the  most  westerly  station  and  9  the  most 
easterly.  The  area  is  1 10.^2  2R  23P.  The  result  may,  iiow- 
ever,  as  in  the  other  examples,  be  slightly  varied  by  the 
balancing. 


WITH    THE    COMPASS. 


113 


0.  What  is  the  area  of  a  survey  of  which  the  following 
are  the  notes  1 


I        Stations. 

Bearings. 

Distances. 

1 

S  46^0  E 

80  rods. 

2 

S  5lf  W 

34.16 

3 

West. 

85 

4 

N  560  W 

110.40 

5 

N  3310  E 

75.20 

6 

S  7410  E 

123.80 

Jlns.   104.5  iR  16P. 


PROBLEM. 

To  determine  the  content  and  boundary  of  a  piece  of  land,  hi/ 
means  of  offsets  from  the  principal  lines. 

145.  An  offset  is  a  line  drawn  perpendicular  to  a  course, 
and  may  lie  either  on  the  right  or  left  of  it. 

146.  Let  ABODE  be  a  piece  of 
ground  to  be  surveyed.  Let  us  sup- 
pose it  to  be  bounded  on  the  west 
and  north  by  a  fence  and  road,  and 
on  the  east  and  south  by  a  creek  or 
river. 

Place  stations  at  the  principal 
points,  as  A,  B,  C,  D  and  E,  Take, 
with  the  compass,  the  bearings  from 
A  to  J5,  from  B  to  C,  from  C  to  D, 
from  D  to  E,  and  from  E  to  A ;  and 
measure  the  distances  AB,  BC,  CD, 
DE,  and  EA. 

At  convenient  points  of  the  course  AB,  as  a,  c  and  /,  make 
the  offsets  ab,  cd,  fg.  Then,  having  measured  these  lines, 
as  also  the  distances  Aa,  ac,  cf  and  fB,  enough  will  be 
known  to  determine  the  area  which  lies  without  the  station 

8 


114 


ELEMENTS    OF    SURVEYING. 


line  JIB.  The  points  6,  d,  and  g^  of  the  fence  which  runs 
from  A  to  B,  are  also  determined. 

Erect,  in  a  similar  manner,  offsets  to  the  other  courses, 
and  determine  the  areas  which  lie  without  the  station  lines. 
Tliese  several  areas  being  added  to  the  area  within  the  sta- 
tion lines,  will  give  the  entire  area  of  the  ground. 

If  the  offsets  fall  within  the  station  lines,  the  corresponding 
area  must  be  subtracted  from  the  area  which  is  bounded  by 
the  station  lines. 


PROBLEM. 

To  determine  the  bearing  and  distance  from  one  point  to  another^ 
when  the  points  are  so  situated  that  one  cannot  be  seen  from  the 
other. 


147.  Let  AB  be  a  meridian,  and 
*^  and  C  the  two  points.  From 
either  of  them,  as  A,  measure  a 
course  .^2,  of  a  convenient  length 
in  the  direction  towards  C,  and  take 
the  bearing  with  the  compass.  At 
2,  take  the  bearing  of  a  second 
course,  and  measure  the  distance 
to  3.  At  3,  take  a  third  bearing  and 
measure  to  4.  At  4,  take  the  bear- 
ing to  C,  and  measure  the  distance 
from  4  to  C. 

Then,  the  difference  between  the 
sum  of  the  northings  and  the  sum  of  the  southings  will  be 
represented  by  AB,  and  the  difference  between  the  sum  of 
the  eastings  and  the  sum  of  the  westings  by  BC.  The  base 
AB,  and  the  perpendicular  BC  of  the  right-angled  triangle 
ABC,  are  then  known.  The  angle  at  the  base,  BAC,  is  the 
bearing  from  A  to  C;  or  the  equal  alternate  angle  at  C  is 
the  bearing  from  C  to  A,  and  the  hypothenuse  AC  is  the 
distance. 

Having  measured  the  bearings  and  courses  on  the  field, 
form  a  table,  and  find  the  base  and  perpendicular  of  the  right- 
angled  triangle,  in  numbers. 


WITH    THE    COMPASS. 


115 


Remark.  Had  any  of  the  courses 
run  south,  AB  would  have  been 
equal  to  the  sum  of  the  northings, 
minus  the  sum  of  the  southings. 

To  find  the  angle  BAG,  or  the 
bearing  from  A  to  C. 

As  radius  :  tan  A  :  :  AB  :  jBC, 

ox  AB  \  BC  :  \  R  :  inn  A  X 

that  is, 


As  AB  87.77 
BC  35.29 

R 
tan  A  21054'  12". 


ar.  comp. 


SUUon. 

Bearings. 

Distances. 

1       - 

- 

- 

w.    1 

1 

N61MV 

40  ch. 

1     19.39 

1     34.98  1 

2 

N42''W 

41. 

1    30.47 

1    27.43 

3 

N  12«  E 

16.10 

1     15.75 

3.35     1 

4 

N47°E 

32.50 

1    22.16 

2.3.77     1 

AB==87.77 

27.12 

62.41 

27.12 


C£=35.29  ch. 
Cs  B 


8.056654 
1.547659 

10. 
9.604306 


To  find  the  distance  AC. 

As  sin  ^21054' 12"      ar.  comp.         .         0.428242 
R 10. 

BC   35.29  ....  1.547052 

AC    94.6  .  .  .  .  1.975894 

Hence,  the  bearing  and  distance  are  both  found. 

Of  supplying  omissions  in  the  field  notes. 

148.  The  last  problem  affords  an  easy  method  of  finding 
the  bearing  and  length  of  one  of  the  courses  of  a  survey, 
when  the  bearings  and  lengths  of  all  the  others  are  knowiL 
It  may  be  necessary  to  use  this  method  when  there  are  obsta- 
cles which  prevent  the  measuring  of  a  course,  or  when  the 


116 


ELEMENTS    OF    SURVEYING. 


bearing  cannot  be  taken.  Indeed,  any  two  omissions  may 
always  be  supplied  by  calculation.  It  is  far  better,  however, 
if  possible,  to  take  all  the  notes  on  the  field.  For,  when  any 
of  them  are  supplied  by  calculation,  there  are  no  test  by 
which  the  accuracy  of  the  work  can  be  ascertained,  and  all 
the  errors  of  the  notes  affect  also  the  parts  which  are  supplied. 
1.  In  a  survey  we  have  the  following  notes. 


i 

Stations. 

Bearings. 

Distances. 

1 

N3ii°W 

10  ch. 

2 

N  eafE 

9.25 

3 

Lost. 

Lost. 

4 

S45i''W 

10.40 

What  is  the  bearing  and  distance  from  station  3  to  4. 

^^- 1  Distance,    6.  98.  ch, 
2.   In  a  survey  we  have  the  following  notes  : 


Stations. 

Bearings. 

Distances. 

1 

S  40i»  E 

31.80  ch. 

2 

N  54°  E 

2.08 

3 

Lost. 

Lost. 

4 

N  28f°E 

35.35 

5 

N57°  W 

21.10 

I       " 

S  47°  W 

31.30 

1 

What  is  the  bearing  and  distance  from  3  to  4  ? 


.       CBearing.N340  4r  E. 
^^^'7  Distance,     2.19.  ch. 


WITH    THE     COMPASS.  117 


To  determine  the  angle  included  between  any  two  courses,  when 

N 


their  bearings  are  knoicn. 


149.  Let  NS  be  a  meridian 
passing  through  *^. 

Let  ^B,  AC,  AD  and  AH  be 
four  courses  running  from  A. 
We  readily  deduce  the  following 

RULES. 

c^C  is  N  260  W        ^      When  the  meridional  letters  arc 

AH  is  N  65"  W        >  alike,  and  those  of  departure  also 

CAH=39''  ^  alike,  the  difference  of  the  bearings 

will  be  the  angle  between  the  courses. 

AB  is  N  46*  E         ^      When  the  meridional  letters  are 

w3C  is  N  26°  W        >  alike,  and  those  of  departure  unhke, 

CAB  =  12^  ^  the  sum  of  the  bearings  will  be  the 

angle  between  the  courses. 

When  the  meridional  letters  are 

.^C  is  N  26°  W        J  unhke,  and  those  of  departure  alike, 

AD  is  S  66°  W        \  the  angle  between  the  courses  will  be 

CAD— 180'^  — Q2°  =  88°     5  equal  to  180°  minus  the  sum  of  the 

bearings. 

When  the  meridional  letters  are 

.y^C  is  N  26°  W        ^  unlike,  and  those  of  departure  also 

AF  is  S  66°  E         >  unlike,  the  angle  between  the  courses 

Cj2F=180°  — 40°=140o  ^  will  be  equal  to  the  difference  of  the 

bearings  taken  from  180°. 
Remark.  The  above  rules  are  determined,  under  the  sup- 
position that  the  two  courses  are  both  run  from  the  angular 
point.  Hence,  if  it  be  required  to  apply  the  rules  to  two 
courses  run  in  the  ordinary  way,  as  we  go  around  the  field, 
the  bearing  of  one  of  them  must  be  reversed  before  the  calcu- 
lation for  the  angle  is  made. 

1.  The  bearings  of  two  courses,  from  the  same  point,  are 
N  37°  E,  and  S  85°  W  :  what  is  the  angle  included  between 
them  ] 

Ans.   132\ 


118 


ELEMENTS    OF    SURVEYING. 


2.  The  bearings  of  two  adjacent  courses,  in  going  round  a 
piece  of  land,  are  N  39°  W,  and  S  48°  W  :  what  is  the  angle 
included  between  them  ] 

^ns.  87". 

3.  The  bearings  of  two  adjacent  courses,  in  going  round  a 
piece  of  land,  are  S  85°  W,  and  N  69°  W  :  what  is  the  angle 
included  between  them  1 

Ans.   154°. 

4.  The  bearings  of  two  adjacent  courses,  in  going  round  a 
piece  of  land,  are  N  55°  30^  E,  and  S  69°  20^  E  :  what  is  the 
angle  included  between  them  1 

Ms.    124°  50^ 

PROBLEM. 

To  run  a  line  from  a  given  point  in  the  boundary  of  a  piece 
of  land,  so  as  to  cut  off  on  either  side  of  it  a  given  portion 
of  the  field. 

150.  Make  a  complete  survey  of  the  field,  by  the  rules 
already  given.  Let  us  take,  as  an  example,  the  field  whose 
area  is  computed  at  page  106.  That  field  contains  I04w3 
ijR  16P,  and  the  following  is  a  plot  of  it. 

N 


Let  it  now  be  required  to  run  a  line  from  station  A,  jq 
such  a  manner  as  to  cut  off  on  the  left  any  part  of  the  field  ; 


say, 


26^  2R  ZIP. 


It  is  seen,  by  examining  the  field,  that  the  division  line 
will  probably  terminate  on  the  course  CD.  Therefore,  draw 
a  line  from  A  to  C,  which  we  will  call  the  first  closing  line. 

The  bearings  and  lengths  of  the  courses  JIB,  BC,  are 
always  known  ;  and  in  the  present  example  are  found  in  the 


WITH    THE    COMPASS.  119 

table  on  page  106  :  hence,  the  bearing  and  distance  from  C 
to  ./?,  can  be  calculated  by  the  last  problem  :  they  are  in  this 
example, 

Bear.  S  9°  28'  E  :    Course  22.8  ch. 

Having  calculated  the  bearing  and  length  of  the  closing 
line,  find,  by  the  general  method,  the  area  which  it  cuts  off: 
that  area,  in  the  present  case,  is 

13^   3R   SP. 

It  is  now  evident  that  the  division  line  must  fall  on  the 
right  of  the  closing  line  AC,  and  must  cut  off  an  area  ACH, 
equal  to  the  difference  between  that  already  cut  off,  and  the 
given  area  :  that  is,  an  area  equal 

26 A  2R  31 P  given  area. 
13^5  SR     3P  area  already  cut  off. 
to      .      .      .         12.^2    3R   28P. 

Since  the  bearing  of  the  next  course  CD,  and  the  bearing 
of  the  closing  line  AC  are  known,  the  angle  ACD  which 
they  form  with  each  other,  can  be  calculated,  and  is  in  this 
example  80°  32°.  Hence,  knowing  the  hypothenuse  AC,  and 
the  angle  ACG  at  the  base,  the  length  AG  of  the  perpen- 
dicular let  fall  on  the  course  CD,  can  be  found,  and  is 
22.49  chains. 

Since  the  area  of  a  triangle  is  equal  to  its  base  multiplied 
by  half  its  altitude,  it  follows,  that  the  base  is  equal  to  the 
area  divided  by  half  the  altitude.     Therefore,  if  the  area 

12 A  3R  28P 

be  reduced  to  square  chains,  and  divided  by  11.24^  chains, 
which  is  half  the  perpendicular  AG,  the  quotient,  which  is 
1 1.58  chains,  will  be  the  base  CH.  Hence,  if  we  lay  off  from 
C,  on  CD,  a  distance  CH,  equal  to  11.5  chains,  and  then  run 
the  line  AH,  it  will  cut  off  from  the  land  the  required  area. 

Remark  I.  If  the  part  cut  off  by  the  first  closing  line, 
should  exceed  the  given  area,  the  division  line  will  fall  on 
the  left  of  AC. 

Remark  II.  If  the  difference  between  the  given  area  and 
the  first  area  cut  off,  divided  by  half  the  perpendicular  AG, 
gives  a  quotient  larger  than  the  course   CD ;  then,  draw  a 


120  ELEMENTS    OP    SURVEYING. 

line  from  ^5  to  D,  and  consider  it  as  the  first  closing  line,  and 
let  fall  a  perpendicular  on  DE. 

Remark  III.  When  the  point  from  which  the  division 
line  is  to  be  drawn,  falls  between  the  extremities  of  a  course, 
dividing  the  course  into  two  parts,  consider  one  of  the  parts 
as  an  entire  course,  and  the  otlier  as  forming  a  new  course, 
having  the  same  bearing.  Tlie  manner  of  making  the  cal- 
culation will  then  be  the  same  as  before. 

Method  of  determining  the  area  of  a  Survey  by  means  of  the 
Table  of  J^atural  Sines  and  Cosines. 

If,  in  a  circle  of  which  the  radius  is  1,  we  calculate  the 
sine  and  cosine  for  every  minute  of  the  quadrant,  they  form 
what  is  called  a  Table  of  Natural  Sines  and  Cosines.  The 
natural  sine  is  the  perpendicular,  and  the  natural  cosine  the 
base  of  a  right  angled  triangle  of  which  the  hypothenuse, 
or  radius  of  the  circle,  is  1. 

Since  either  leg  of  a  right  angled  triangle  is  less  than  the 
hypothenuse,  it  follows  that  the  natural  sine  or  cosine  of  every 
arc  of  the  quadrant  is  less  than  1.  These  sines  and  cosines 
are  expressed  in  decimals  of  the  radius  1,  and  although  the 
decimal  point  is  not  written  in  the  table,  yet  it  must  always 
be  prefixed  to  the  number  before  using  it. 

Thus  in  page  67,  the  sine  of  5°  30'       is  .09585. 

The  cosine  of  5°  30'        „  .99540. 

Sine  of  40°  25'     (page    71)  „  .64834. 

Cosine  of  40°  25'  „  .76135. 

When  the  angle  exceeds  45°,  the  degrees  are  found  at  the 
bottom  of  the  page,  and  the  minutes  are  counted  upwards  in 
the  right  hand  column  of  the  page,  as  in  the  table  of  loga- 
rithmic sines. 

Thus,  sine  of  84°  20'     (page  64) 

The  cosine  of  84°  20' 

(page  65) 


Sine  of 

79°  37' 

Cosine  of 

79°  37' 

Sine  of 

69°  25' 

Cosine  of 

69°  25' 

Sine  of 

57°  59' 

Cosine  of 

57°  59' 

is 

.99511. 

j» 

- 

.09874. 

j> 

.98362. 

j> 

.18023. 

jj 

.93016. 

99 

.35157. 

» 

.84789. 

»> 

.53017 

WITH     THE     COMPASS. 


121 


If  the  Surveying  Compass  has  a  vernier  which  enables  you 
to  read  the  bearings  to  smaller  parts  of  a  degree  than  15', 
greater  accuracy  may  be  attained  by  using  the  table  of 
natural  sines,  instead  of  the  Traverse  Table,  for  computing 
the  area. 

We  shall  now  show  the  method  of  calculating  the  latitude 
and  departure  of  any  course,  from  the  table  of  natural  sines. 


Let  JID,  for  example  be  any  course, 
DAE  the  bearing,  and  AC=l  the 
radius  of  the  table  of  natural  sines. 


Having   formed    the    right    angled  ^        B 

triangles  ACB,  JlDE,  we  have   DAE  =  hesLnng, 
AE=di{.  of  latitude  and     jEZ)  =  departure, 

.^5  =  cosine  of  bearing         and     ^C= sine  of  bearing. 
From  similar  triangles,  we  have, 

AB     \\     AD     :     AE ;   that  is, 


AC 


1   :  cosine  of  bear.  :  :  course  :  dif.  of  lat.  ;  hence, 
dif.  of  latitude  =  course  X  cosine   of  bearing  ;  that  is  ; 
The  difference  of  latitude  is  equal  to  the  length  of  the  course 
multiplied  by  the  cosine  of  the  bearing. 
Again, 

AC  :   CB  ::  AD  :  DE;  that  is, 

1  :  sine  of  bearing  :  :  course  :  departure ;  hence, 
departure  =  course  x  sine  of  bearing,  that  is. 
The  departure  is  equal  to  the  length  of  the  course  multiplied  by 
the  sine  of  the  bearing. 

Ex.  1.  Find,  from  the   Table  of  natural  sines,  the  latitude 
and  departure  of  the  course  49  yards  and  bearing  35®  18' 
Natural  cosine  of         35"  18'  -         -         -        .81614 

Length  of  the  course  -  -         -         -  49 

Product,  which  is  the  dif.  of  latitude 


Natural  sine  of         35M8' 
Length  of  the  course 

Product,  which  is  the  departure 


39.99086. 

.57786 
49 

28.31514. 


122 


ELEMENTS     OF    SURVEYING. 


.41231 

69.41 
28.618437T 

.91104 
69.41 


2.  The  bearing  is  65°  39',  the   course  69.41  chains:  what 
is  the  latitude,  and  what  the  departure? 

Natural  cosine  of     65°  39' 

Length  of  the  course         -  -         - 

Product,  which  is  the  Dif.  of  Latitude 

Natural  sine  of     65°  39' 

Length  of  the  course 

Product,  which  is  the  Departure        -  63.2352864. 

3.  The  bearing  is  75°  47',  the  course  89.75  chains  :    what 
rs  the  latitude,  and  what  the  departure  ? 

Natural  cosine  of  75°  47'  -         -         -  .24559 

Length  of  course  -  .         -         -  89.76 

Product,  which  is  the  Dif.  of  Latitude  22.0417025. 

Natural  sine  of  75°  47'  -         -         -  I         .96937 

Length  of  course  -----  89.75 

Product,  which  is  the  Departure  -  87.0009575. 


4.  Find  the  area  of  a  piece  of  land  from  the  following 
notes. 


stations. 

Bearings. 

Distances. 

1 

N  45°  55'  W 

53  ch. 

2 

N  4°  50'  E 

74.40 

3 

N  89°  05' E 

125.50 

4 

S  1°  50'  W 

71.80 

5 

S7°40'E 

31.20 

6 

1        N89°25'W 

35.50 

7 

S  84°  35'  W 

40. 

8 

S  74°  35' W 

21. 

WITH    THE    COMPASS. 


123 


Calculating  the  latitude  and  departure  of  each  course  by 
the  rules  already  given,  we  have 


^ta. 

Bearings. 

Dist. 

Dif.  of  Latitude. 

Departure. 

Balanced.                       1 

N.      I 

S. 

E.       1      W. 

N. 

S. 

E. 

W. 

1 

N45«'55'V4^ 

53  ch. 

36.87210  j 

1  38.07149 

36.65908 

38.07149 

2 

N    4°50'E 

74.40 

74.135131 

6.26894 1 

73.72813 

6.26S94 

3 

N  89^^  05'  E 

125.50 

2.00800 1 

125.48368 

1.96126 

125.49228 

4 

S    1°50'W 

71.80 

1 

71.76338 

2.29688 

72.17110 

2.29688 

5 

S    7''40'E 

31.20 

j  30.92107 

4.16239 

31.12138 

4.16239 

N89"25'V^^ 

35.50 

0.36139| 

35.49822 

0.36139 

35.49822 

7 

S  84°  35'  W 

40. 

1     3.77600 

39.82120 

3.80352 

39.81260 

8 

S  74°  35'  V^ 

21. 

1    5.58264 

20.24442 

5.61385 

20.24442 

113.376621112.04309 
112.043091 

135.91501 

135.93221 
135.91501 

112.70986I112.709851135.923611135.923C1 

Error  in  Southing 
«alf  Error 


1.33353 
0.6667fi 


0.01720  Error  in  Easting. 
0.00860  Half  Error. 


Instead  of  balancing  by  the  method  explained  m  Art.  138, 
we  divide  each  error  by  two.  Now  if  we  subtract  half  the 
error  in  southing  from  the  column  of  northings  and  at  the 
same  time  add  it  to  the  column  of  southings,  these  two 
columns  will  exactly  balance.  In  like  manner,  if  we  subtract 
half  the  error  in  easting  from  the  column  of  westings  and  at 
the  same  time  add  it  to  the  column  of  eastings,  these  cohimns 
will  also  balance. 

The  errors  should  be  distributed  in  proportion  to  the  lengths 
of  the  courses,  but  this  may  be  done  with  sufficient  accuracy 
without  making  the  proportions.  If  any  of  the  courses  have 
been  run  over  rough  ground,  the  probability  is  that  the  errors 
belong  to  these  courses  and  they  should  be  distributed  among 
them. 

In  this  example  we  separate  the  half  error  in  southing  into 
the  three  parts  .40700,  .21302  and  .04674,  and  subtract  them 
respectively  from  the  northings  of  courses  2,  1  and  3,  and  then 
place  the  northings  in  the  balanced  columns.  For  the  south- 
ings, we  separate  the  error  into  the  four  parts  .40772,  .2  0031, 
.03121,  and  .02752,  and  add  them  respectively  to  the  south- 
ings of  the  courses  4,  5,  8  and  7.  We  then  enter  the  southings 
in  the  balanced  columns.  As  the  error  in  easting  is  so  small 
we  add  half  of  it  to  the  easting  of  course  3,  and  subtract  half 
from  the  westing  of  course  7. 


24 


ELEMENTS    OF    SURVEYING. 


Forming  a  new  table  and  entering  the  balanced  latitudes 
and  departures  with  their  proper  signs,  we  have, 


Sta. 

Beaoing. 

Dist. 

Lat. 

Dep. 

D.  M.  D. 

Area. 

+ 

Area. 

1 

N  45«  55'  W 

53  ch. 

+36.65908 

—  38.07149 

+  38.07149 

1395.66579 

2* 

N    4°50'E 

74.40 

+73.72813 

+    6.26894 

+    6.26894 

462.19722 

3 

N  89"  05'  E 

125.50 

+■  1.96126 

+125.49228 

+138.03016 

270.71303 

4 

S    PSO'W 

71.80 

—72.17110 

—    2.29688 

+261.22556 

18854.24214 

5 
6 

S    TMO'W 

31.20 

-31.12138 

+     4.16239 

+263.09107 

8187.75716 

N  89°  25'  W 

35.50 

+  0.36139 

—  35.49822 

+231.75524 

83.75402 

7 

S  84"  35'  W 

40. 

—  3.80352 

—  39.81260 

+156.44442 

595.03948 

8 

S  74°  35'  W 

21. 

—  5.61385 

—  20.24442 

+  96.38740 

541.10440 

An.  1298^2.  iR.  fiP. 

|2212.33006|28178. 14318 
1  2212.33006 

2)25965.81312 
12982.90656 

Having  entered  the  balanced  latitudes  and  departures  we 
seek  for  the  most  easterly  or  westerly  station.  We  see  at 
once  that  station  2  is  the  most  westerly. 

Assuming  this  for  the  principal  station  (see  Art.  14 1),  the 
double  meridian  distances  will  all  be  east,  and  consequently 
will  be  plus. 

We  then  enter  the  departure  of  course  2  in  the  column  of 
double  meridian  distances,  and  then  calculate  the  double 
meridian  distance  of  each  course,  according  to  the  rule  given 
in  Art.  141. 

Having  done  this  we  multiply  each  departure  by  the  double 
meridian  distance  of  its  course  and  place  the  product  in  the 
column  of  plus  or  minus  areas,  according  as  the  signs  of  the 
factors  are  like  or  unlike.  We  enter  but  five  decimal  places 
in  the  columns  of  areas.  This  will  give  the  result  with  suffi- 
cient accuracy.  We  then  add  up  the  columns  of  area,  take 
the  difference  of  the  two  sums,  divide  it  by  two  and  reduce 
the  quotient  to  acres,  roods  and  perches. 

We  thus  find  the  area  to  be  1298  acres,  1  rood  and  6  perches. 


WITH    THE    COMPASS. 


125 


Ex,  5.  Find    the    area   of  a  piece  of  land  of  whicli   the 
following  are  the  field  notes. 


stations. 

Bearings. 

Distances. 

1 

N52°36'W 

20  ch. 

2 

N  45°  39^  E 

13.80 

3 

N83°  54^  E 

21.25 

4 

S  62»  06'  E 

27.60 

5 

S27°09^W 

18.80 

6 

N  80°  36' W 

30.95 

In  this  example  station  2  is  the  most  westerly  and  station  5 
the  most  easterly  point  of  the  land. 

6.  Find  the  content  of  a  piece  of  land  from  the  following 
field  notes. 


stations. 

Bearings. 

Distances. 

1 

w. 

35.25  ch. 

2 

S88°15'W 

45.65 

3 

N       30'  W 

32.55 

4 

N88°45'E 

20.25 

5 

N    1°15'W 

25.40 

6 

N  88°  30' E 

60.00 

7 

S    1°  00'  E 

25.50 

8 

S     1°  45'  E 

33.10 

In  this  example  station  1  is  the  most  easterly  and  station  4 
the  most  westerly  point  of  the  land.  If  the  meridian  dis- 
tances of  the  courses  be  calculated  from  the  meridian  passing 
through  station  I  they  will  all  be  west :  if  from  the  meridian 
passing  through  4,  they  will  all  be  east. 


126 


ELEMENTS    OF    SURVEYING. 


Method  of  Surveying  the  Public  Lands. 

151.  Soon  after  the  organization  of  the  present  government, 
several  of  the  states  ceded  to  the  United  States  large  tracts  of 
wild  land,  and  these  together  with  the  lands  since  acquired 
by  treaty  and  purchase,  constitute  what  is  called  the  public 
lands  or  public  domain.  Previous  to  the  year  1802  these 
lands  were  parcelled  out  without  reference  to  any  general 
plan,  in  consequence  of  which  the  titles  often  conflicted  with 
each  other,  and  in  many  cases,  several  grants  covered  the 
same  premises. 

In  the  year  1802,  the  following  method  of  surveying  the 
public  lands,  was  adopted  by  Colonel  Jared  Mansfield,  then 
surveyor-general  of  the  North-Western  Territory. 

152.  The  country  to  be  surveyed  is  first  divided  by  par- 
allel meridians,  six  miles  distant  .from  each  other  ;  and  then 
again,  by  a  system  of  east  and  west  lines,  also  six  miles  from 
each  other.  The  whole  country  is  thus  divided  into  equal 
squares,  which  are  called  townships.  Hence,  each  township 
is  a  square,  six  miles  on  a  side,  and  contains  36  square  miles. 

The  townships  which  lie  along  the  same  meridian,  are 
called  a  range,  and  are  numbered,  to  distinguish  them  from 
each  other. 

Each  township  is  divided  into  equal  squares,  by  meridians 
one  mile  apart,  and  by  east  and  west  lines  at  the  same  dis- 
tance from  each  other.  Hence,  each  township  is  divided  into 
36  square  miles,  each  one  of  which  is  called  a  section.  The 
sections  of  a  township  are  numbered  from  1  to  36,  and  each 
contains  640  acres. 

Tlie  diagram  exhibits  the  36  sections  of  a  township. 


i ( 1 i 


WITH    THE    COMPASS.  127 

To  describe  a  section  accurately,  we  saj?^,  section  number 
5,  in  township  number  4,  in  range  3d,  west  of  a  known  me- 
ridian, the  one,  for  example,  drawn  through  the  mouth  of  the 
Great  Miami  river.  This  description  fixes  precisely  the  place 
of  the  section.  Go  to  the  3d  range  of  townships,  west  of  the 
known  meridian,  find  township  number  4  in  this  range,  and 
lastly,  section  number  5  of  that  township.  Tiie  corners  of 
the  sections  should  be  marked  by  permanent  corner-posts,  or 
by  lines  blazed  on  trees. 

The  sections  are  divided  into  half  sections,  quarter  sections, 
and  even  into  eighths  of  sections.  The  following  table  shows 
the  content  of  a  township,  and  its  subdivisions. 

1  township  =  36  sections  =  23040  acres. 

1  section  =  6 40  acres. 

I  section  =  320  acres. 

^  section  =  160  acres. 

■1  section  =   80  acres. 
The  principal  meridians,  and  the  principal  east  and  west 
hues,  have  been  established  by  astronomical  observation,  and 
the  lines  of  subdivision  run  with  the  compass.. 

VARIATION    OF    THE    NEEDLE. 

153.  The  line  indicated  by  the  magnetic  needle,  when 
allowed  to  move  freely  about  the  point  of  support,  and  settle 
to  a  state  of  rest,  has  been  called  the  magnetic  meridian. 
This,  in  general,  is  a  different  line  from  the  true  meridian, 
which  always  passes  through  the  poles  of  the  earth,  when 
sufliciently  produced  in  both  directions. 

154.  The  angle  which  the  magnetic  meridian  makes  with 
the  true  meridian,  at  any  place  on  the  surface  of  the  earth,  is 
called  the  variation  of  the  needle  at  that  place,  and  is  east  or 
west,  according  as  the  north  end  of  the  needle  lies  on  the 
east  or  west  side  of  the  true  meridian. 

155.  The  variation  is  diflerent  at  different  places,  and  even 
at  the  same  place  it  does  not  remain  constant  for  any  length 
of  time.  The  variation  is  ascertained  by  comparing  the  mag- 
netic, with  the  true  meridian. 

156.  The  best  practical  method  of  determining  the  true 
meridian  of  a  place,  is  by  observing  the  north  star.  If  this 
star  were  precisely  at  the  point  in  which  the  axis  of  the  earth, 


128 


ELEMENTS    OP    SURVEYING. 


produced,  pierces  the  heavens,  then,  the  interh^eclion  of  the 
vertical  plane  passing  through  it  and  the  place,  with  the  sur- 
face of  the  earth,  would  be  the  true  meridian.  But,  the  star 
being  at  a  distance  from  the  pole,  equal  to  1°  34'  nearly,  it 
performs  a  revolution  about  the  pole  in  a  circle,  the  polar  dis- 
tance of  which  is  1°  34' :  the  time  of  revolution  is  2  3  h.  and 
56  min. 

To  the  eye  of  an  observer,  this  star  is  continually  in  motion, 
and  is  due  north  but  twice  in  23  h.  56  min.  ;  and  is  then  said 
to  be  on  the  meridian.  Now,  when  it  departs  from  the  me« 
ridian,  it  apparently  moves  east  or  west,  for  5  h.  and  59  min., 
and  then  returns  to  the  meridian  again.  When  at  its  greatest 
distance  from  the  meridian,  east  or  west,  it  is  said  to  be  at  its 
greatest  eastern  or  western  elongation. 

The  following  tables  show  the  times  of  its  greatest  eastern 
and  western  elongations. 

Eastern  Elongations. 


Days 

April 

May 

June 

July 

August 

Sept 

H.  M. 

n.  M. 

H.  M. 

H.  M. 

H.  M. 

H.  M. 

1 

18  18 

16  26 

14  24 

12  20 

10  16 

8  20 

7 

17  56 

16  03 

14  00 

11  55 

9  53 

7  58 

13 

17  34 

15  40 

13  35 

11  31 

9  30 

7  36 

19 

17  12 

15  17 

13  10 

11  07 

9  08 

7  15 

25 

• 

16  49 

14  53 

12  45 

10  43 

8  45 

6  53 

Western  Elongations. 


Days 

Oct. 

Nov. 

Dec. 

Jan. 

Feb. 

March 

1 

H.  M. 

H.  M. 

H.  M. 

H.  M. 

H.  M. 

H.  M. 

1 

18  18 

16  22 

14  19 

12  02 

9   50 

8  01 

7 

17  56 

15  59 

13  53 

11  36 

9  26 

7  38 

13 

17  34 

15  35 

13  27 

11  10 

9  02 

7  16 

1  19 

17  12 

15  10 

13  00 

10  44 

8  39 

6  54 

'  25 

16  49 

14  45 

12  34 

10  18 

8  16 

6  33 

The  eastern  elongations  are  put  down  from  the  first  of 
April  to  the  first  of  October  ;  and  the  western,  from  the  first 
of  October  to  the  first  of  April ;  the  time  is  computed  from 
12  at  noon.  The  western  elongations  in  the  first  case,  and 
the  eastern  in  the  second,  occurring  in  the  daytime,  cannot 


VARIATION    OP    THE    NEEDLE. 


129 


be  used.  Some  of  those  put  down  are  also  invisible,  occur- 
ring- in  the  evening,  before  it  is  dark,  or  after  daylight  in  the 
morning.  In  such  case,  if  it  be  necessary  to  determine  the 
meridian  at  that  particular  season  of  the  year,  let  5  h.  and 
59  min.  be  added  to,  or  subtracted  from,  the  time  of  greatest 
eastern  or  western  elongation,  and  the  observation  be  made  at 
night,  when  the  star  is  on  the  meridian. 

The  following  table  exhibits  the  angle  which  the  meridian 
plane  makes  with  the  vertical  plane  passing  through  the  pole- 
star,  when  at  its  greatest  eastern  or  western  elongation  :  such 
angle  is  called  the  azimuth.  The  mean  angle  only  is  put 
down,  being  calculated  for  the  first  of  July  of  each  year 

AZIMUTH    TABLE. 


Years 

Lat.  32« 
Azimutli 

Lat.  34° 

Azimuth 

Lat.  36« 
Azimuth 

Lat.  3S» 
Azimuth 

Lat.  40O 
Azimuth 

Lat.  42« 
Azimuth 

Lat.  440  1 
Azimuth 

1836 

IO5O' 

1°  521' 

10  56' 

10  581' 

20     21' 

20 

6' 

20 

101' 

1837 

1°  501' 

lO  521' 

IO55I' 

10  581' 

20     2' 

20 

H' 

20 

10' 

1838 

1050' 

10  521' 

1055' 

10  58' 

20     11' 

20 

5' 

20 

91' 

1839 

10  491' 

IO52' 

IO54I' 

IO57I' 

20     1' 

2" 

H' 

2.« 

9' 

1840 

1»  49' 

1°511' 

1»54' 

1»571' 

2«     01' 

2° 

4' 

2° 

81' 

1841 

l°48l' 

1°51' 

l''53l' 

l''57l' 

2°     0' 

20 

31' 

20 

8' 

1842 

10  48' 

10  501' 

1053' 

IO56I' 

IO59I' 

20 

3' 

20 

H' 

1843 

IO47I' 

IO5O' 

lO  521' 

lO  56' 

IO59' 

2° 

21' 

2° 

7' 

1844 

lUl' 

l°49i' 

l'»52' 

l''55l' 

|l°58l' 

2° 

2' 

2" 

61' 

1845 

1"461' 

1»49' 

1°511' 

1»55' 

1»58' 

2° 

11'   2" 

6' 

;    1846 

1°46' 

l''48V 

1"  51' 

1°  541' 

1°  571' 

2° 

1'      2° 

H' 

The  use  of  the  above  tables,  in  finding  the  true  meridian, 
will  soon  appear. 

To  find  the  true  meridian  with  the  theodolite. 
157.  Take  a  board,  of  about  one  foot,  square,  paste  white 
paper  upon  it,  and  perforate  it  through  the  centre  ;   the  diam- 
eter of  the  hole  being  somewhat  larger  than  the  diameter  of 
tlie  telescope  of  the   theodolite.     Let  this  board  be  so  fixed 


130  ELEMENTS  OF  SURVEYING. 

to  a  vertical  staff,  as  to  slide  up  and  down  freely  :  aiivl  lot  a 
small  piece  of  board,  about  three  inches  square,  be  nailed  to 
the  lower  edge  of  it,  for  the  purpose  of  holding  a  candle. 

About  twenty-five  minutes  before  the  time  of  the  great esf 
eastern  or  western  elongation  of  the  pole-star,  as  shown  b\ 
the  tables  of  elongations,  let  the  theodolite  be  placed  at  a  con* 
venient  point  and  levelled.  Let  the  board  be  placed  about 
one  foot  in  front  of  the  theodolite,  a  lamp  or  candle  placed  on 
the  shelf  at  its  lower  edge  ;  and  let  the  board  be  slipped  up  or 
down,  until  the  pole-star  can  be  seen  through  the  hole.  The 
light  reflected  from  the  paper  will  show  the  cross  hairs  in  the 
telescope  of  the  theodolite. 

Then,  let  the  vertical  spider's  line  be  brought  exactly  upon 
the  pole-star,  and,  if  it  is  an  eastern  elongation  that  is  to  be 
observed,  and  the  star  has  not  yet  reached  the  most  easterly 
point,  it  will  move  from  the  line  towards  the  east,  and  the 
reverse  when  the  elongation  is  west. 

At  the  time  the  star  attains  its  greatest  elongation,  it  will 
appear  to  coincide  with  the  vertical  spider's  line  for  some  time, 
and  then  leave  it,  in  the  direction  contrary  to  its  fovmer 
motion. 

As  the  star  moves  towards  the  point  of  greatest  elongation, 
the  telescope  must  be  continually  directed  to  it,  by  means  of 
the  tangent-screw  of  the  vernier  plate ;  and  when  the  star 
has  attained  its  greatest  elongation,  great  care  should  be 
taken  that  the  instrument  be  not  afterwards  moved. 

Now,  if  it  be  not  convenient  to  leave  the  instrument  in  its 
place  until  daylight,  let  a  staff,  with  a  candle  or  small  lamp 
upon  its  upper  extremity,  be  arranged  at  thirty  or  forty  yards 
from  the  theodolite,  and  in  the  same  vertical  plane  with  the 
axis  of  the  telescope.  This  is  easily  effected,  by  revolving 
the  vertical  limb  about  its  horizontal  axis  without  moving 
the  vernier  plate,  and  aligning  the  staff  to  coincide  with  the 
vertical  hair.  Then  mark  the  point  directly  under  the  theodo- 
lite ;  the  line  passing  through  this  point  and  the  staff,  makes 
an  angle  with  the  true  meridian  equal  to  the  azimuth  of  the 
pole-star. 

From  the  table  of  azimuths,  take  the  azimuth  correspond- 
ing to  the  year  and  nearest  latitude.  If  the  observed  elonga- 
tion were  east,  the  true  meridian  lies  on  the  west  of  the  lirio 
which  has  been  found,  and  makes  with  it  an  angle  equal  to 


VARIATION    OF    THE    NEEDLE.  131 

die  azimuth.  If  the  elongation  were  west,  the  true  meridian 
lies  on  the  east  of  the  line  :  and,  in  either  case,  laying  off  the 
azimuth  angle  with  the  theodolite,  gives  the  true  meridian. 

To  find  the  true  meridian  with  the  compass. 

158.  1.  Drive  two  posts  firmly  into  the  ground,  in  a  line 
nearly  east  and  west ;  the  uppermost  ends,  Avhen  driven 
firml}',  heing  about  three  feet  above  the  surface,  and  the  posts 
about  four  feet  apart :  then  lay  a  plank,  or  piece  of  timber 
three  or  four  inches  in  width,  and  smooth  on  the  upper  side, 
upon  the  posts,  and  let  it  be  pinned  or  nailed,  to  hold  it  firmly. 

2.  Prepare  a  piece  of  board  four  or  five  inches  square,  and 
smooth  on  the  under  side.  Let  one  of  the  compass-sights  be 
placed  at  right  angles  to  the  upper  surface  of  the  board,  and 
let  a  nail  be  driven  through  the  board,  so  that  it  can  be  tacked 
to  the  timber  resting  on  the  posts. 

3.  At  about  twelve  feet  from  the  stakes,  and  in  the  direc- 
tion of  the  pole-star,  let  a  plumb  be  suspended  from  the  top 
of  an  inclined  stake  or  pole.  The  top  of  the  pole  should  be 
of  such  a  height  that  the  pole-star  will  appear  about  six 
inches  below  it ;  and  the  plumb  should  be  swung  in  a  vessel 
of  water  to  prevent  it  from  vibrating. 

This  being  done,  about  twenty  minutes  before  the  time  of 
elongation,  place  the  board,  to  which  the  compass-sight  is 
fastened,  on  the  horizontal  plank,  and  slide  it  east  or  west, 
until  the  aperture  of  the  compass-sight,  the  plumb  line,  and 
the  star,  are  brought  into  the  same  range.  Then  if  the  star 
depart  from  the  plumb-line,  move  the  compass-sight,  east 
or  west,  along  the  timber,  as  the  case  may  be,  until  the  star 
shall  attain  its  greatest  elongation,  when  it  will  continue 
behind  the  plumb-line  for  several  minutes  ;  and  will  then 
recede  from  it  in  the  direction  contrary  to  its  motion  before  it 
became  stationary.  Let  the  compass-sight  be  now  fastened 
to  the  horizontal  plank.  During  this  observation  it  will  be 
necessary  to  have  the  plumb-line  lighted  :  this  may  be  done 
by  an  assistant  holding  a  candle  near  it. 

Let  now  a  staff,  with  a  candle  or  lamp  upon  it,  be  placed 
at  a  distance  of  thirty  or  forty  yards  from  the  plumb-line,  and 
in  the  same  direction  with  it  and  the  compass-sight.  The 
line  so  determined,  makes,  with  the  true  meridian,  an  ojsi^le 


132  ELEMENTS    OP    SURVEYING. 

equal  to  the  azimuth  of  the  pole-star;  and,  from  this  line, 
the  variation  of  the  needle  is  readily  determined,  even  witliout 
tracing  the  true  meridian  on  the  ground. 

Place  the  compass  upon  this  line,  turn  the  sights  in  the 
direction  of  it,  and  note  the  angle  shown  by  the  needle. 
Now,  if  the  elongation,  at  the  time  of  observation,  were  west, 
and  the  north  end  of  the  needle  on  the  west  side  of  the  line, 
the  azimuth,  plus  the  angle  shown  by  the  needle,  is  tlie  true 
variation.  But  should  the  north  end  of  the  needle  be  found 
on  the  east  side  of  the  line,  the  elongation  being  west,  the 
difference  between  the  azimuth  and  the  angle  would  show  the 
variation  :  and  the  reverse  when  the  elongation  is  east. 

1.  Elongation  west,  azimuth 
North  end  of  the  needle  on  the  west,  angle 

Variation 

2.  Elongation  west,  azimuth 
North  end  of  the  needle  on  the  east,  angle 

Variation 

3.  Elongation  east,  azimuth 
North  end  of  the  needle  on  the  west,  angle 

Variation 

4,.  Elongation  east,  azimuth 
North  end  of  the  needle  on  the  east,  angle 

Variation 

Remark  I.  The  variation  at  West  Point,  in  September, 
1835,  was  6°  32'  west. 

Remark  II.  The  variation  of  the  needle  should  always 
be  noted  on  every  survey  made  Avith  the  compass,  and  then 
if  the  land  be  surveyed  at  a  future  time,  the  old  lines  can 
always  be  re-run. 

159.  It  has  been  found  by  observation,  that  heat  and  cold 
sensibly  affect  the  magnetic  needle,  and  that  the  same  needle 
will,  at  the  same  place,  indicate  different  lines  at  different 
hours  of  the  day. 

If  the  magnetic  meridian  be  observed  early  in  the  morning, 
and  again  at  different  hours  of  the  day,  it  will  be  found  that 
the  needle  will  continue  to  recede  from  the  meridian  as  the 
day  advances,  until  about  the  time  of  the  highest  tempera- 


20  04' 

40  06' 

6°  10' 

west. 

P  59' 

4»  50' 

2"  51' 

east* 

2"  05' 

8°  30' 

6"  25' 

west. 

1«  57' 

8»  40' 

10°  37' 

east. 

WITH    THE    PLAIN-TABLE.  133 

ture,  when  it  will  begin  to  return,  and  at  evening  will  make 
the  same  line  as  in  the  morning.  This  change  is  called  the 
diurnal  variation,  and  varies,  during  the  summer  season,  from 
one-fourth  to  one-fifth  of  a  degree. 

OF    THE    PLAIN-TABLE. 

160.  PL  3,  Fig.  1.  The  plain-table  consists  of  two  parts; 
a  rectangular  board  CDBA,  and  a  tripod  EHG,  to  which  it 
is  firmly  secured. 

Directly  under  the  rectangular  board  are  four  milled  screws 
which  pass  through  sockets  inserted  in  a  horizontal  brass 
plate  :  these  screws  are  worked  against  a  second  horizontal 
plate,  for  the  purpose  of  levelling  the  table  ;  the  table  having 
a  ball  and  socket  motion,  similar  to  the  limb  of  the  theodolite. 

For  the  purpose  of  levelling  the  table,  a  small  detached 
spirit-level  is  used.  This  level  being  placed  over  the  centre, 
and  also  over  two  of  the  levelling  screws,  the  screws  are  turned 
contrary  ways  until  the  level  is  horizontal  ;  after  which,  it  is 
placed  over  the  other  two  screws,  and  made  horizontal  in  the 
same  manner. 

Between  the  upper  horizontal  plate  and  the  table,  there  is 
a  clamp-screw,  similar  to  the  clamp-screw  of  the  theodolite, 
which  being  loosened,  the  table  can  be  turned  freely  about 
its  axis.  There  is,  also,  a  small  tangent-screw,  by  which  the 
smaller  motions  of  the  table  are  regulated,  after  the  clamp- 
screw  is  made  fast.  Neither  of  these  screws  can  be  seen  in 
the  figure. 

The  upper  side  of  the  table  is  bordered  by  four  brass  plates, 
about  one  inch  in  width,  and  the  centre  of  the  table  is  marked 
by  a  small  pin,  F.  About  this  centre,  and  tangent  to  the 
sides  of  the  table,  conceive  a  circle  to  be  described.  Suppose 
the  circumference  of  the  circle  to  be  divided  into  degrees  and 
parts  of  a  degree,  and  radii  to  be  drawn  through  the  centre 
and  the  points  of  division.  The  points  in  which  these  radii 
intersect  the  outer  edge  of  the  brass  border,  are  marked  by 
lines  on  the  brass  plates,  and  the  degrees  are  numbered  in  the 
direction  from  left  to  right,  from  the  point  L  to  the  point  /, 
180°,  and  from  the  point  /  to  the  point  L,  180°.  In  some 
plain-tables,  however,  they  are  numbered  from  0  to  360". 

There  are,  generally,  diagonal  scales  of  equal  parts  cut  on 


134  ELEMENTS  OF  SURVEYING. 

the  plates  DLC  and  AIB^  the  use  of  which  will  be  explained 
hereafter. 

Near  the  two  other  edges  of  the  table,  two  small  grooves 
are  made,  into  which  the  plates  of  brass  DB  and  CJi  are 
fitted,  and  these  plates  are  drawn  to  their  places  by  means  of 
milled  screws  which  pass  through  the  table  from  the  under 
side,  and  screw  firmly  into  the  plates.  The  heads  of  two  of 
the  screws,  Q  and  S,  are  seen  in  the  figure,  as  also  one  of  the 
plates  and  its  two  screws  in  Fig.  3.  The  object  of  these 
plates  is  to  confine  a  sheet  of  paper  on  the  table.  By  loosen- 
ing the  screws,  and  pressing  them  upwards,  the  plates  are 
raised  above  the  surface  of  the  table  ;  the  edges  of  the  paper 
can  then  be  placed  under  them  :  then,  by  turning  the  screws 
back  again,  the  plates  are  drawn  down  and  the  paper  held 
tightly.  Fig.  1  represents  the  table  with  the  paper  partly  put 
upon  it :  one  edge  of  the  paper  has  been  placed  under  the 
plate  DB,  and  the  screws  >S  and  Q,  tightened.  The  paper, 
before  being  put  on,  should  be  moistened,  in  order  to  expand 
it;  and  then,  after  it  has  been  dried,  it  will  fit  closely  to  the 
table. 

A  ruler,  JIB  (Fig.  2),  with  open  vertical  sights,  is  used 
with  the  plain-table.  This  ruler  has  a  fiducial  edge,  which 
is  in  the  same  vertical  plane  with  the  hairs  of  the  sights. 
A  ruler  with  a  telescope,  and  a  vertical  limb,  similar  to  the 
vertical  limb  of  the  theodolite,  is  sometimes  used  with  the 
plain-table.  A  compass,  also,  is  often  attached  to  the  table, 
to  show  the  bearings  of  the  lines. 

The  plain-table  is  used  for  two  distinct  objects. 

1st.  For  the  measurement  of  horizontal  angles. 

2dly.  For  the  determination  of  the  shorter  lines  of  a  sur- 
vey, both  in  extent  and  position. 

To  measure  a  horizontal  angle. 

161.  Place,  by  means  of  a  plumb,  the  centre  of  the  table 
directly  over  the  angular  point :  then  level  the  table  ;  after 
which,  place  the  fiducial  edge  of  the  ruler  against  the  small 
pin  at  the  centre  :  direct  the  sights  to  one  of  the  objects,  and 
note  the  degrees  on  the  brass  plate  ;  then  turn  the  ruler  and 
sights  to  the  other  object,  and  note  the  degrees  as  before. 
If  the  ruler  has  not  passed  over  the  0  point,  the  difference  of 
the  readings  is  the  angle  sought ;  but,  if  it  has,  the  larger 


WITH    THE    PLAIN-TABLE.  135 

taken  from   180*,  and  the  remainder  added  to  the  smaller, 
gives  the  required  angle. 

Of  the  determination  of  lines  in  extent  and  position. 

162.  Having  placed  a  paper  on  the  table,  examine  the  ob- 
jects and  lines  which  are  to  be  determined,  and  measure  a 
base  line  in  such  a  direction,  if  possible,  that  all  the  objects 
can  be  seen  from  its  extremities.  Then  place  the  plain-table 
with  its  centre,  nearly,  though  not  accurately,  over  one  ex- 
tremity of  the  base  ;  make  it  truly  horizontal,  and  turn  it 
until  the  larger  part  of  the  paper  lies  on  the  same  side  of  the 
base  with  the  objects. 

Then,  tighten  the  clamp-screw,  and  mark  with  a  pin  the 
point  of  the  paper  directly  over  the  station,  which  point  is  de- 
termined most  accurately  by  suspending  a  plumb  from  the 
lower  side  of  the  table.  Press  the  pin  /irmly  on  this  point, 
bring  the  fiducial  edge  of  the  ruler  against  it,  and  sight  to  the 
other  extremity  of  the  base  line,  and  mark  with  the  pin  or 
pencil,  the  direction  of  the  line  on  the  paper.  Sight  in  like 
manner  to  every  other  object,  and  draw  on  the  paper  the  cor- 
responding lines,  numbering  them  from  the  base  line,  1,  2,  3, 
4,  &c. 

Then,  with  a  pair  of  dividers,  take  from  the  scale  a  certain 
number  of  equal  parts  to  represent  the  base,  and  lay  off  the 
distance  on  the  base  line  from  the  place  of  the  pin.  Take 
up  the  table,  carry  it  to  the  other  extremity  of  the  base,  and 
place  the  point  of  the  paper  corresponding  to  that  extremity, 
directly  over  it.  Place  the  fiducial  edge  of  the  ruler  on  the 
base  line,  and  turn  the  table,  by  means  of  the  tangent-screw, 
until  the  sights  are  directed  to  the  first  station.  If,  however, 
in  bringing  the  table  to  this  position,  the  corresponding  point 
of  the  paper  has  been  moved  from  over  the  extremity  of  the 
base  line,  move  the  legs  of  the  tripod  until  it  is  brought  back 
to  its  place.  Let  the  table  be  then  levelled,  after  which, 
place  the  ruler  again  on  the  base  line,  and  bring  the  table  to 
its  proper  position  by  the  tangent-screw,  and  continue  the  ad- 
justment until  the  extremity  of  the  base  line  on  the  paper  is 
directly  over  the  station,  and  in  the  same  vertical  plane  with 
the  base  line  on  the  ground.  Then  direct  the  sights  to  all 
the  objects  sighted  to  from  the  other  station,  and  mark  the 
lines  1,  2,  3,  4,  &c.  from  the  base  line,  as  before.     The  inter- 


136 


ELEMENTS    OF    SURVEYING. 


sections  of  the  corresponding  lines  1,1,  2,2,  3,3,  4,4,  &c*, 
determine,  on  the  paper,  the  positions  of  the  several  objects; 
and  a  reference  of  these  lines  to  the  scale  of  equal  parts, 
determines  the  true  distances. 

1 63.  Let  it  be  required,  for  ex- 
ample, to  determine,  by  means 
of  the  plain-table,  the  relative 
position  of  several  houses. 

Measure  the  base  line  JiB, 
which  we  will  suppose  equal 
to  300  yards.  Place  the  plain- 
table  at  A,  and  sight  to  the 
corners  of  the  houses,  and  mark  the  lines  1,  2,  3,  4,  &c.  Then 
remove  the  table  to  B,  and  sight  to  the  same  corners  as 
before,  and  draw  the  lines  as  in  the  figure.  The  points  at 
which  they  intersect  the  corresponding  lines  before  drawn, 
determine  the  corners  of  the  houses.  The  front  lines  of  the 
houses  may  then  be  drawn  on  the  paper.  Draw  lines  at  riglil 
angles  to  the  front  lines,  and  on  them  lay  off  the  depths  of 
the  houses,  with  the  same  scale  as  that  used  for  the  base  line. 

To  find  the  length  of  any  line  drawn  on  the  paper,  as  the 
line  1,  drawn  through  A,  for  example,  place  the  dividers  at 
A  and  extend  them  to  the  other  extremity  of  the  line,  and 
then  apply  the  line  to  the  scale.  The  length  of  the  line  1  is 
equal  to  198  yards. 

164.  In  this  example,  we  de- 
termine from  the  base  line  CD, 
the  positions  of  the  points  B,  F, 
E,  and  H. 

Of  changing  the  Paper. 

165.  When  one  paper  is  filled,  and  there  is  yet  more  work 
to  be  done,  let  the  paper  be  removed,  and  a  second  paper  put 
on  the  table  ;  after  which,  the  table  may  be  used  as  before. 

Now,  in  order  that  the  two  papers  may  be  put  together  and 
form  one  entire  plan,  it  is  necessary  that  two  points  deter- 
mined on  the  first  paper,  be  also  determined  on  the  second  ; 
and  then,  by  placing  the  lines  joining  these  points  upon  each 
other,  all  the  lines  on  the  two  papers  will  have   the  same 


OF    LEVELLING.  137 

relative  position  as  the  corresponding  lines  on  the  ground  ; 
and  the  same  for  as  many  papers  as  it  may  be  necessary  to 
use.  If  -different  scales  are  used,  the  corresponding  points 
will  not  join,  and  then  the  work  must  be  reduced  to  the  same 
scale,  before  the  papers  can  be  put  together. 

In  the  first  example,  the  position  of  the  point  F  was  deter- 
mined, in  order  to  unite  the  first  paper  with  the  second. 

In  the  second  example,  we  sighted  from  C  and  D,  the 
extremities  of  the  base  line,  to  the  points  B  and  F;  we  thus 
determined  the  hue  BF  on  the  second  paper.  Placing  the 
line  BF  of  the  one  paper  on  BF  of  the  other,  we  have  the 
following  plan. 


In  this  plan,  all  the  points  and  lines  are  accurately  laid 
down.  Any  number  of  papers  may  be  joined  in  the  same 
manner. 

The  plain-table  is  used  to  great  advantage  when  only  a 
plot  of  the  ground  is  wanted.  It  ought  not  to  be  used  for 
the  determination  of  long  lines,  nor  can  it  be  relied  on  in 
determining  extended  areas. 


CHAPTER  V. 

Of  Levelling. 

166.  If  all  the  points  of  the  earth's  surface  were  equidistant 
from  the  centre,  it  would  be  perfectly  even,  and  present  to 
the  eye  an  unbroken  level. 

Intersected,  however,  as  it  is,  by  valleys  and  ridges  of 
mountains,  it  becomes  an  important  problem  to  ascertain  the 
difference  between  the  distances  of  given  points  from  the 
centre  of  the  earth ;   such  difference  is  called  the  difference 


138  ELEMENTS  OF  SURVEYING. 

of  level ;  and  a  line,  all  the  points  of  which  are  equally  dis- 
tant from  the  centre,  is  called  the  line  of  true  level* 

167.  One  point  is  said  to  be  above  another,  when  it  is 
farther  from  the  centre  of  the  earth  ;  and  below  it,  when  it  is 
nearer. 

168.  Let  C  (PL  4,  Fig.  1),  represent  the  centre  of  the 
earth.  A  a  point  of  its  surface,  and  JIEF  the  line  of  true 
level.  If,  at  the  point  Jl,  a  tangent  line  JlBD  be  drawn  to 
the  surface,  such  line  is  called  the  line  of  apparent  level. 

169.  Now,  if  an  instrument  were  placed  at  Ay  and  brought 
into  a  horizontal  position  so  as  to  indicate  a  horizontal  line, 
this  line  would  be  tangent  to  the  earth  at  A,  and  would  be 
the  line  ABD  of  apparent  level. 

170.  When,  therefore,  we  have  ascertained  the  direction  of 
a  tangent,  or  horizontal  line,  we  have  found  the  line  of  appa- 
rent level  only  ;  the  line  of  true  level  is  yet  to  be  determined. 

If  at  the  points  E  and  jP,  vertical  staves  be  placed,  the 
line  of  apparent  level  passing  through  A  will  cut  them  at 
B  and  D,  while  the  line  of  true  level  cuts  them  at  E  and  F. 
Therefore,  BE  and  DF  are,  respectively,  the  differences  be- 
tween the  apparent  levels  of  the  points  E  and  F,  as  deter- 
mined by  the  horizontal  line  passing  through  A^  and  the  true 
levels  of  those  points. 

But  AB'  =  BE  {BE+^EC),  and  AD^=DF  (DF+sFC) 
(Geom.  Bk.  IV,  Prop.  XXX).  In  the  common  operations  of 
levelling,  the  arcs  AE,  AF,  are  small ;  and  since  the  differ- 
ence between  small  arcs  and  their  tangents  is  very  incon- 
siderable, the  arcs  AE,  AF  may  be  substituted  for  the  tan- 
gents AB,  AD.  And  since  the  external  parts  of  the  secants 
BE  and  DF  are  very  small  in  comparison  with  the  diameter 
of  the  earth,  they  may  be  neglected  without  sensible  error  : 
the  expressions  above  will  then  become, 

AE'=BEx2EC,  and  AF^=DFx2FC, 

J.J.     AE^  .    j.j^    AF^ 

or,  BE= ;    and   DF= ; 

2EC  2FC 

and  since  the  diameter  of  the  earth  is  constant,  BE  and  DF 
are  proportional  to  AE^  and  AF^. 

*  The  spheroidal  form  of  the  earth  is  not  considered,  as  it  affects  the  results 
too  inconsiderably  to  be  regarded  in  the  common  operations  of  levelUng. 


OF    LEVELLING. 


139 


But  BE  and  DF  are  respectively  the  differences  between 
the  true  levels  of  the  points  E  and  F,  and  their  apparent 
levels,  as  determined  from  the  point  A  :  hence,  the  difference 
between  the  apparent  and  true  level  of  any  point,  is  equal  to 
the  square  of  the  distance  of  that  point  from  the  place  where  the 
apparent  level  was  made,  divided  by  the  diameter  of  the  earth; 
or,  the  diameter  being  constant,  the  rise  of  the  apparent  above 
the  true  level,  is  proportional  to  the  square  of  the  distance. 

171.  The  mean  diameter  of  the  earth  being  about  7919 
miles,   if  AE   be    taken   equal   to    1   mile,   then   the   excess 

ft  7^2  1 

BE=—T—    becomes  equal  to  =  8.001  inches. 

2dC  7919 

If  the  excess  FD,  for  any  other  distance  AF,  were  required, 

AE""  :  AF^  :  :  BE  :  FD ; 

and  by  similar  proportions  the  following  table  is  calculated. 

Table  showing  the  differences  in  inches  between  the  true  and  appa 
rent  level,  for  distances  between  1  and  100  chains. 


Chains. 

Inches. 

Cfains. 

Inches. 

Chains. 

Inles. 

1 
Chains. 

1 

Inches. 

1 

.001 

-26 

.845 

51 

3.255 

76 

7.221 

2 

.005 

27 

.911 

52 

3.380 

77 

7.412 

3 

.011 

28 

.981 

53 

3.511 

78 

7.605 

4 

.020 

29 

1.051 

54 

3.645 

79 

7.802 

5 

.031 

30 

1.125 

55 

3.781 

80 

8.001 

6 

.045 

31 

1.201 

56 

3.925 

81 

8.202 

7 

.061 

32 

1.280 

57 

4.061 

82 

8.406 

8 

.080 

33 

1.360 

58 

4.205 

83 

8.612 

9 

.101 

34 

1.446 

59 

4.351 

84 

8.832 

10 

.125 

35 

1.531 

60 

4.500 

85 

9.042 

11 

.151 

36 

1.620 

61 

4.654 

86 

9.246 

12 

.180 

37 

1.711 

62 

4.805 

87 

9.462 

13 

.211 

38 

1.805 

63 

4.968 

88 

9.681 

14 

.245 

39 

1.901 

64 

5.120 

89 

9.902 

15 

.281 

40 

2.003 

65 

5.281 

90 

10.126 

16 

.320 

41 

2.101 

66 

5.443 

91 

10.351 

17 

.361 

42 

2.208 

67 

5.612 

92 

10.587 

18 

.405 

43 

2.311 

68 

5.787 

93 

10.812 

19 

.451 

44 

2.420 

69 

5.955 

94 

11.046 

20 

.500 

45 

2.531 

70 

6.125 

95 

11.233 

21 

.552 

46 

2.646 

71 

6.302 

96 

11.521 

22 

.605 

47 

2.761 

72 

6.480 

97 

11.763  1 

23 

.661 

48 

2.880 

73 

6.662 

98 

12.017  1 

24 

.720 

49 

3.004 

74 

6.846 

99 

12.246 

25 

.781 

J2^ 

3.125  • 

75 

7.032 

100 

12.502 

140  ELEMENTS  OF  SURVEYING. 

We  cnnnot  proceed  farther  in  the  discussion  of  the  principles 
of  levelling,  until  we  have  described  the  instruments  which 
are  to  be  used,  and  explained  the  particular  objects  which 
they  are  to  answer. 

OF    THE    LEVEL. 

172.  The  level  is  an  instrument  used  to  determine  hori- 
zontal lines,  and  the  difference  of  level  of  any  points  on  the 
surface  of  the  earth. 

The  part  of  the  instrument  shown  in  PI.  4,  Fig.  2,  rests  on 
a  tripod  to  which  it  is  permanently  attached  at  Z.  IIH  is  a 
horizontal  brass  plate,  through  which  four  levelling  screws 
with  milled  heads  are  passed,  and  worked  against  a  second 
horizontal  plate  GG.  Two  of  these  screws,  K  and  /,  are 
seen  in  the  figure.  *S  is  a  clamp-screw,  which,  being  loosened, 
allows  the  upper  part  of  the  instrument  to  turn  freely  around 
its  axis.  Q  is  a  tangent-screw,  by  means  of  which  the  upper 
part  of  the  instrument  is  moved  gently,  after  the  clamp-screw 
S  has  been  made  fast.  EE  is  a  horizontal  bar,  perpendicular 
to  which  are  the  wyes,  designated  F's,that  support  the  tele- 
scope LB.  This  telescope  is  confined  in  the  F's  by  the  loops 
r,  r,  which  arc  fastened  by  the  pins  p  and  p.  The  object- 
glass  J5,  is  adjustedxto  its  focus  by  the  screw  X ;  the  eye- 
glass L  slides  out  and  hi  freely.  The  screws  /,  /,  Avork  the 
slide  which  carries  the  ^horizontal  hair  ;  and  two  horizontal 
screws,  only  one  of  which,  «,  is  seen,  work  the  slide  that 
carries  the  vertical  hair.  CD  is  an  attached  spirit  level.  The 
screw  JV  elevates  and  depresses  the  F,  nearest  the  eye-glass. 
In  some  instruments  this  Y  is  elevated  and  depressed,  by 
means  of  two  screws  at  M  and  R. 

Before  using  the  level,  it  must  be  adjusted.  The  adjustment 
consists  in  bringing  the  different  parts  to  their  proper  places. 

The  line  of  collimation  is  the  axis  of  the  telescope.  With 
this  axis,  the  Hne  drawn  through  the  centre  of  the  eye-glass, 
and  the  intersection  of  the  spider's  lines,  within  the  barrel  of 
the  telescope,  ought  to  coincide. 

First  adjustment.*  To  fix  the  intersection  of  the  spider's 
lines  in  the  axis  of  the  telescope. 

Having  screwed  the  tripod  to  the  instrument,  extend  the 

*  This,  and  some  of  the  following  adjustments,  are  so  similar  to  those  of  the 
theodolite,  that  they  would  not  be  repeated,  but  that  some  may  use  the  level  without 
wishing  to  study  a  more  complicated  instrument 


OF    LEVELLING.  141 

legs,  and  place  them  firmly.  Then  loosen  the  clamp-sciew  S, 
and  direct  the  telescope  to  a  small,  well-defined,,  and  distant 
object.  Then  slide  the  eye-glass  till  the  spider's  lines  are 
seen  distinctly  ;  after  which,  with  the  screw  X,  adjust  the 
object-glass  to  its  proper  focus,  when  the  object  and  the 
Fpider's  lines  will  be  distinctly  seen.  Note  now  the  precise 
point  covered  by  the  intersection  of  the  spider's  lines. 

Having  done  this,  revolve  the  telescope  in  the  F's,  half 
round,  when  the  attached  level  CD  will  come  to  the  upper 
side.  See  if,  in  this  position,  the  horizontal  hair  appears 
above  or  below  the  point,  and  in  either  case,  loosen  the  one, 
and  tighten, the  other,  of  the  two  screws  which  work  the  hori- 
zontal hair,  until  it  has  been  carried  over  half  the  space 
between  its  last  position  and  the  observed  point.  Carry  the 
telescope  back  to  its  place  ;  direct  again,  by  the  screws  at 
JH  and  R,  the  intersection  of  the  spider's  lines  to  the  point, 
and  repeat  the  operation,  till  the  horizontal  hair  neither 
ascends  nor  descends  while  the  telescope  is  revolved.  A 
similar  process  will  arrange  the  vertical  hair,  and  the  line 
of  collimation  is  then  adjusted. 

Second  adjustment.  To  make  the  axis  of  the  attached 
level  CD  parallel  to  the  line  of  collimation. 

Turn  the  screw  JV,  or  the  screws  M  and  R,  until  the  bub- 
ble of  the  level  DC  stands  at  the  middle  of  the  tube.  Then 
open  the  loops,  and  reverse  the  telescope.  If  the  bubble  still 
stands  at  the  middle  of  the  tube,  the  axis  of  the  level  is  hori- 
zontal ;  but  if  not,  it  is  inclined,  the  bubble  being  at  the  ele- 
vated end.  In  such  case,  raise  the  depressed,  or  depress  the 
elevated  end,  by  means  of  the  screw  h,  half  the  inclination  ; 
and  then  with  the  screw  JV,  bring  the  level  to  a  horizontal 
position.  Reverse  the  telescope  in  the  F's,  and  make  the 
same  correction  again  ;  and  proceed  thus,  until  the  bubble 
stands  in  the  middle  of  the  tube,  in  both  positions  of  the  tele- 
scope ;   the  axis  of  the  level  is  then  horizontal. 

Let  the  telescope  be  now  revolved  in  the  F's.  If  the  bub- 
ble continue  in  the  middle  of  the  tube,  the  axis  of  the  level 
is  not  only  horizontal,  but  also  parallel  to  the  line  of  collima- 
tion. If,  however,  the  bubble  recedes  from  the  centre,  the 
axis  of  the  level  is  inclined  to  the  line  of  collimation,  and 


142  ELEMENTS    OF    SURVEYING. 

must  be  made  parallel  to  it,  by  means  of  two  small  screws, 
which  work  horizontally  ;  one  of  these  screws  is  seen  at  q. 
By  loosening  one  of  them,  and  tightening  the  other,  the  level 
is  soon  brought  parallel  to  the  line  of  collimation  ;  and  then, 
if  the  telescope  be  revolved  in  the  F's,  the  bubble  will  con 
tinuc  at  the  middle  point  of  the  tube.  It  is,  however,  difficult 
to  make  the  first  part  of  this  adjustment,  while  the  axis  of 
the  level  is  considerably  inclined  to  the  line  of  collimation  : 
for,  allowing  the  level  to  be  truly  horizontal  in  one  position 
of  the  telescope,  after  it  is  reversed,  there  will  be  but  one  cor- 
responding position  in  which  the  bubble  will  stand  at  the 
middle  of  the  tube.  This  suggests  the  necessity  of  making 
the  first  part  of  the  adjustment  with  tolerable  accuracy  ;  then, 
having  made  the  second  with  care,  re-examine  the  first,  and 
proceed  thus  till  the  adjustment  is  completed. 

Third  adjustment.  To  make  the  level  CD  and  the  line  of 
collimation  perpendicular  to  the  axis  of  the  instrument,  or  parallel 
to  the  horizontal  bar  EE. 

Loosen  the  clamp-screw  S,  and  turn  the  bar  EE,  until  the 
level  DC  comes  directly  over  two  of  the  levelling  screws.  By 
means  of  these  screws,  make  the  level  CD  truly  horizontal. 
Then,  turn  the  level  quite  round  ;  if,  during  the  revolution, 
it  continue  horizontal,  it  must  be  at  right  angles  to  the  axis 
of  the  instrument  about  which  it  has  been  revolved.  But  if, 
after  the  revolution,  the  level  CD  be  not  horizontal,  rectify 
half  the  error  with  the  screw^s  at  M  and  jR,  and  half  with  the 
levelling  screws.  Then  place  the  bar  EE  over  the  other  two 
levelling  screws,  and  make  the  same  examinations  and  correc- 
tions as  before ;  and  proceed  thus,  until  the  level  can  be  turned 
entirely  around  without  displacing  the  bubble  at  the  centre. 
When  this  can  be  done,  it  is  obvious  that  the  level  DC  and 
the  line  of  coUimation,  are  at  right  angles  to  the  axis  of  the 
instrument  about  which  they  revolve  ;  and  since  the  axis  is 
carefully  adjusted  by  the  maker,  at  right  angles  to  the  bar 
EE,  it  follows,  that  the  line  of  collimation,  the  level  DC, 
and  the  bar  EE,  are  parallel  to  each  other. 

The  level  is  now  adjusted.  When  used,  however,  it  is 
best  to  re-examine  it  every  day  or  two,  as  the  work  will  be 
erroneous  unless  the  adjustments  are  accurate. 


OF    LEVELLING.  143 

Of  Levelling  Staves. 

173.  The  levelling  staves  are  used  to  determine  the  points 
at  which  a  given  horizontal  line  intersects  lines  that  are  per- 
pendicular to  the  surface  of  the  earth,  and  to  show  the  dis- 
tance of  such  points  of  intersection  from  the  ground. 

They  are  thus  constructed.  AB  (PL  4,  Fig.  3)  is  a  rec- 
tangular piece  of  wood,  in  the  middle  of  which  is  a  groove 
abed.  Into  this  groove  a  slide  Inst  enters,  and  is  moved  freely 
along  the  groove.  At  the  upper  end  of  the  slide  is  a  rectan- 
gular board  fhow,  called  a  vane,  six  inches,  in  the  direction 
hi.  The  vane  is  divided  into  four  equal  parts,  by  the  lines 
fg,  hi :  the  two  rectangles //i,  ig,  are  usually  painted  black, 
and  the  other  two,  if,  hg,  white  ;  so  that  the  lines /^  and  hi 
may  be  distinguished  with  great  accuracy.  The  slide  from 
fg  to  In,  is  of  the  same  length  with  the  body  of  the  staff 
AB  :  hence,  when  the  line  fg  coincides  with  be,  the  lower 
end  of  the  slide  In,  will  coincide  with  ad.  The  pins  p  and  q, 
which  work  in  grooves,  and  are  largest  at  the  ends  p  and  q, 
are  pressed  in  to  hold  the  slide  in  any  position  at  which  it 
may  be  placed.  The  length  of  the  staff  is  generally  six  feet, 
and  it  is  usually  divided  into  eighths  or  tenths  of  an  inch. 
The  slide  is  divided  in  the  same  way.  The  longer  lines  show 
the  feet,  the  shorter,  the  inches.  The  object  to  be  attained  by 
these  divisions,  is,  to  ascertain  the  distance  of  the  line  fg  from 
the  ground. 

When  the  line  fg  is  brought  to  the  top  of  the  staff,  to 
coincide  with  be,  the  lower  line  wio  of  the  vane,  coincides 
with  the  line  marked  6,  on  the  left  of  the  staff:  which  shows, 
the  staff  standing  upright,  that  the  line  fg  is  six  feet  above 
the  ground.  From  the  line  marked  6,  to  the  lower  end  of 
the  staff,  is,  indeed,  but  5  feet  9  inches  ;  but  the  line  fg  is 
three  inches  above  the  line  wio,  so  that  fg  is  six  feet  from  the 
ground. 

If,  from  the  last  position,  the  slide  be  run  up  until  the  line 
wio  coincides  with  the  division  marked  1,  on  the  left  of  the 
staff,  the  line  fg  will  be  six  feet  and  one  inch  from  the  ground : 
if,  till  it  coincides  with  6c,  it  will  be  six  feet  and  three  inches, 
the  inches  being  marked  on  the  staff.  If  the  slide  be  still  run 
up,  until  7  on  the  slide  coincides  with  be,  the  hne  fg  will  be 
seven  feet  from  the  ground.     In   the  j&gure,  the  line  fg  is 


144  ELEMENTS  OF  SURVEYING. 

seven  feet  from  the  bottom  of  the  staff.  The  count  above  6 
feet  3  inches  is  always  made  on  the  slide.  The  manner  of 
counting  off,  for  the  parts  of  an  inch,  is  too  plain  to  require 
particular  explanation. 

Having  run  down  the  slide  till  the  upper  line  h,  of  the 
vane,  coincides  with  be,  place  bB  on  the  ground,  and  the 
staff  vertical.  It  is  now  plain,  that  the  line  fg  is  three  inches 
above  the  ground.  These  three  inches  are  marked  on  the 
right  of  the  staff.  If  the  slide  be  run  up  till  the  lower  line  h 
coincides  with  1,  on  the  right  of  the  staff,  the  line  fg  will  be 
one  foot  from  the  ground,  and  similarly,  until  six  feet  be 
shown  at  the  other  end  of  the  staff. 

The  feet  are  marked  1,  2,  3,  &c.,  from  the  upper  end,  and 
are  reversed  in  the  present  position  of  the  staff;  but  are  up- 
right when  the  staff  is  placed  for  use.  In  the  last  position  of 
the  staff,  the  count  is  made  at  the  lower  line  of  the  vane. 

174.  There  is  a  method  of  testing  the  adjustments  of  the 
level,  which  ought  not  to  be  neglected,  since  all  the  results  de- 
pend on  the  accuracy  of  the  instrument.     The  method  is  this: 

Tlie  level  being  adjusted,  place  it  at  any  convenient  point, 
as  G  (Fig.  4).  At  equal  distances  of  about  100  yards,  on 
either  side,  and  in  the  same  line  with  the  level,  place  the 
levelling  staves  CE,  BF.  Make  the  level  horizontal  with 
the  levelling  screws.  Then,  turn  it  towards  either  staff,  as 
BF,  and  run  the  vane  up  or  down,  as  required,  until  the 
intersection  of  the  hairs  strikes  the  centre  :  then  make  the 
slide  fast,  and  note  carefully  the  neight  of  the  vane.  Turn 
the  level  half  round,  and  do  the  same  in  respect  of  the  staff 
CE.  Let  the  telescope  be  now  reversed  in  the  F's.  Sight 
again  to  the  staff  BF,  and  note  the  exact  height  of  the  vane. 
Let  the  telescope  be  now  turned  half  round,  and  the  same  be 
done  for  the  staff  CE.  If  the  two  heiglits  last  observed,  are 
equal  to  those  first  noted,  each  to  each,  the  line  of  collimation 
will  be  perpendicular  to  the  axis  of  the  instrument,  and  if  the 
bubble  has,  at  the  same  time,  preserved  its  place  at  the  middle 
point  of  the  tube,  the  instrument  is  truly  adjusted. 

For,  had  the  line  of  collimation  been  inclined  to  the  axis 
of  the  level,  it  would,  in  the  first  instance,  have  taken  the 
direction  JlF  or  £d  ;  and  when  turned  half  round,  it  would 
have  taken   the  direction  Ab  or  AE.     The  telescope  being 


OF    LEVELLING. 


145 


reversed  in  the  F's,  and  again  directed  to  the  staff  BF,  the 
line  of  colhmation  would  take  the  direction  Ad  or  AF,  and 
when  turned  to  the  staff  CE,  it  would  take  the  direction  AE 
or  Ab  :  and  the  two  distances  BF,  Bd,  or  Cb,  CE,  can  only 
be  equal  to  each  other  when  the  line  of  coUimation  falls  on 
the  horizontal  line  gf. 

175.  Having  described  the  instruments  used  in  levelling, 
we  will  explain  the  practical  operations  on  the  field. 

When  it  is  proposed  to  find  the  difference  of  level  of  anj 
two  objects,  or  stations,  all  levels  made  in  the  direction  of  the 
station  at  which  the  work  is  begun,  are,  for  the  sake  of  dis- 
tinction merely,  called  back-sights ;  and  levels  taken  in  the 
direction  of  the  other  station,  fore-sights. 

Before  going  on  the  field  with  the  level,  rule  three  columns, 
as  below,  and  head  them,  stations,  back-sights,  fore-sights. 


stations. 

Back-Sights. 

1 
Fore-Sights. 

1 

10 

3 

2 

11-6 

0 

r 

3 

6-8 

4-9 

4 

3-9 

8-3 

Sums  .  .  .  .   31-11 

16-00 

Dif.  of  level  ...  15-11 

10-0 

PROBLEM. 

176.  To  find  the  difference  of  level  between  any  two  points, 
as  A  and  G  (PI.  4,  Fig.  5). 

The  level  being  adjusted,  place  it  at  any  point  as  B,  as 
nearly  in  the  line  joining  A  and  G  as  may  be  convenient. 
Place  a  levelling  staff  at  A,  and  another  at  JV,  a  point  lying 
as  near  as  may  be  in  the  direction  of  G.  Make  the  level 
horizontal,  by  means  of  the  levelling  screws  ;  turn  the  tele- 
scope to  the  staff  at  A,  and  direct  the  person  at  the  staff  (o 
slide  up  the  vane  until  the  horizontal  line  ab  cuts  its  centre  ;. 
then  note  the  distance  Ab  (equal  to  10  feet  in  the  present 
example),  and  enter  it  in  the  column  of  back-sights,  opposite 
station  l.    Sight  also  to  the  staff  at  JV,  and  enter  the  distance 

10 


146  ELEMENTS  OF  SURVEYING. 

JVa,  equal  to  3  feet,  in  tlie  column  of  fore-sights,  opposite 
station  1. 

Take  up 'the  level,  and  place  it  at  some  other  convenient 
station,  as  C,  and  remove  the  staff  at  Jl,  to  M.  Having 
levelled  the  instrument,  sight  to  the  staff  at  JV,  and  enter  the 
distance  J^d,  1 1  feet  G  inches,  in  the  column  of  hack-sights, 
opposite  station  2  :  sight  also  to  the  staff  at  M,  and  enter  the 
distance  J\IJ^  equal  0,  in  the  column  of  fore-sights,  opposite 
station  2. 

Let  the  level  he  now  removed  to  any  other  station,  as  Z>, 
and  the  staff  at  A*,  to  some  other  point,  as  P.  Let  the  dis- 
tance J\Ig,  equal  to  6  feet  8  inches,  be  entered  in  the  column 
of  hack-sights,  opposite  station  3,  and  the  distance  PJi,  equal 
to  4  feet  9  inches,  in  the  column  of  fore-sights.  Let  the 
instrument  be  now  placed  at  E,  and  the  distance  Pm,  equal 
to  3  feet  9  inches,  and  Gn,  equal  to  8  feet  3  inches,  be  entered 
opposite  station  4,  in  their  proper  columns. 

By  adding  up  the  columns,  we  find,  that  the  sum  of  the 
l)ack-sights  is  equal  to  31  feet  11  inches,  and  the  sum  of  the 
fore-sights,  IC  feet;  the  difference,  15  feet  and  11  inches,  is 
the  difference  of  level  of  the  points  Jl  and  G. 

DEMONSTRATION. 

Let  the  back-sights  he  called  plus,  and  the  fore-sights, 
minus. 

Then,  having  let  fall  the  perpendiculars  J^F,  Mil,  PI,  and 
GL,  on  the  horizontal  line  AL,  it  remains  to  be  proved,  that 
the  difference  of  level, 

GL=^6  +  JV^+Jl%  +  P>n-JVa-0-/iP-na 

Now,  Jlb-\-.m-J^a=M-\-ad  =  Fd; 
Therefore,  GL  =  Fd+Mg-{- Pm --liP-nG. 
But  Fd-\.Mg  =  IIg,  and  -f  Pm-/iP= -/jm, 
Therefore,  GL  =  IIg-hm-nG  =  hI-{hm+nG)  =  GL. 

As  the  same  mj\y  be  shown  in  every  example,  we  conclude 
(hat,  the  difference  between  the  sum  of  the  fore-sights  and  the  sum 
of  the  back-sights  is,  in  all  cases,  equal  to  the  difference  of  level. 

It  is  also  evident  that^  when  the  sum  of  the  hack-sights 
exceeds  tlie  sum  of  the  fore-sights,  the  last  station  is  more 
elevated  than   the   first ;  and,  conversely,  if  the  sum  of  the 


OF    LEVELLING. 


147 


back-sights  is  less  than  the  sum  of  tlie  fore-sights,  the  second 
station  is  lower  than  the  first. 

177.  In  tliis  example,  we  have  not  regarded  the  difTerence 
between  the  true  and  apparent  level.  If  it  be  nece3sary  to 
ascertain  the  result  with  extreme  accuracy,  this  difTerence  must 
be  considered:  and  then,  the  horizontal  distances  between  the 
level,  at  each  of  its  positions,  and  the  staves,  must  be  mea- 
sured, and  the  apparent  levels  diminished  by  the  differences 
of  level ;  which  differences  can  be  found  from  the  table. 

The  following  is  such  an  Example. 


Stat. 

Bark-sfs. 

Disfanres. 

Fore-st. 

Distances.    \  Cor.  back-sights. 

Cor.  fore-sts. 

1 

9-8 

20  ch. 

1-0 

32  ch. 

9-7.500 

1-4.720 

2 

8-7 

25  ch. 

2-4 

28  ch. 

8-6.219 

2-3.019 

3 

5-2 

18  ch. 

3-1 

10  ch. 

5-1.595 

3-0.080 

4 

10-3 

29  ch. 

1-9 

87  ch. 

10-1.949 

0-11.538 

5 

11-0 

45  ch. 

2-5 

72  ch. 

10-9.409 

1-10.520 

44-2.732 

9-6.477 

In  this  example,  the  first  column  shows  the  stations  ;  the 
second,  the  back-sights  ;  the  third,  the  distances  from  the 
level  in  each  of  its  positions  to  the  bflck  staff;  the  fourth,  the 
fore-sights  ;  the  fifth,  the  distances  from  the  level  to  the 
forward  staff;  the  sixth  and  seventh,  are  the  columns  of  back 
and  fore  sights,  corrected  by  the  difference  of  level.  The  cor- 
rections are  thus  made  : — The  difference  of  level  in  the  table 
corresponding  to  20  chains,  is  5  tenths  of  an  inch,  which  be- 
ing subtracted  from  9  feet  8  inches,  leaves  9  feet  7.5  inches  for 
the  corrected  back-sight ;  this  is  entered  opposite  station  1  in 
the  sixth  column.  The  difference  of  level  corresponding,  to 
32  chains,  is  1.280  inches,  which  being  subtracted  from  the 
apparent  level,  1  foot  0  inches,  leaves  1  foot  4.720  inciies  for 
the  true  fore-sight  from  station  1.  The  other  corrections  are 
made  in  the  same  manner. 

The  sum  of  the  back-sights  being  44  feet  2.732  inr!ies, 
and  the  sum  of  the  fore-sights  9  feet  0.477  inches,  it  follows, 


148  ELEMENTS    OF    SURVEYING. 

that  the  difference,  34  feet  8.255  inches,  is  the  true  difference 
of  level. 

178.  In  finding  the  true  from  the  apparent  level,  we  have 
not  regarded  the  effect  caused  by  refraction  on  the  apparent 
elevation  of  objects,  as  well  because  the  refraction  is  different 
in  different  states  of  the  atmosphere,  as  because  the  correc 
tions  are  inconsiderable  in  themselves. 

179.  The  small  errors  that  would  arise  from  regarding  the 
apparent  as  the  true  level,  may  be  avoided  by  placing  the 
levelling  staves  at  equal  distances  from  the  level.  In  such  case, 
it  is  plain,  1st,  that  equal  corrections  must  be  made  in  the 
fore  and  back  sights  ;  and,  sdly,  that  when  the  fore  and  back 
sights  are  diminished  equally,  the  result,  which  is  always  the 
difference  of  their  sums,  will  not  be  affected. 

This  method  should  always  be  followed,  if  practicable,  as  it 
avoids  the  trouble  of  making  corrections  for  the  difference  of 
true  and  apparent  level. 

The  differences  between  the  true  and  apparent  level,  being 
very  inconsiderable  for  short  distances,  if  only  ordinary  accu- 
racy be  required,  it  will  be  unnecessary  to  make  measure- 
ments at  all.  Care,  however,  ought  to  be  taken,  in  placing 
the  levelling  staves,  to  have  them  as  nearly  at  equal  distances 
from  the  level  as  can  be  determined  by  the  eye  ;  and  if  the 
distances  are  unequal,  let  the  next  distances  also  be  made 
unequal ;  that  is,  if  the  back-sight  was  the  longest  in  the  first 
case,  let  it  be  made  proportionably  shorter  in  the  second,  and 
the  reverse. 


CHAPTER  VL 

Of  the  methods  of  showing  the  contour  and  accidents  of  ground. 

180.  Besides  the  surveys  that  are  made  to  determine  the 
area  of  land  and  the  relative  positions  of  objects,  it  is  fre- 
quently necessary  to  make  minute  and  careful  examinations 
for  the  purpose  of  ascertaining  the  form  and  accidents  of  the 
ground,  and   to  make   such  a  plan   as  will   distinguish  the 


CONTOUR    OF    GROUND.  149 

swelling  hill  from  the  sunken  valley,  and  the  course  of  the 
rivulet  from  the  unbroken  plain. 

181.  This  branch  of  surveying  is  called  Topography.  In 
surveys  made  with  a  view  to  the  location  of  extensive  w^orks, 
the  determination  of  the  slopes  and  irregularities  of  the  ground 
is  of  the  first  importance  :  indeed,  the  examinations  would 
otherwise  be  useless. 

182.  The  manner  of  ascertaining  these  irregularities  is,  to 
intersect  the  surface  of  the  ground  by  a  system  of  horizontal 
planes  at  equal  distances  from  each  other  ;  the  curves  deter- 
mined by  these  secant  planes,  being  lines  of  the  surface,  will 
indicate  its  form  at  the  places  of  section,  and,  as  the  curves 
are  more  or  less  numerous,  the  form  of  the  surface  will  be 
more  or  less  accuratelj?^  ascertained. 

If  such  a  system  of  curves  be  determined,  and  then  pro- 
jected or  let  fall  on  a  horizontal  plane,  it  is  obvious  that  the 
curves  on  such  plane  will  be  nearer  together  or  farther  apart, 
as  the  ascent  of  the  hill  is  steep  or  gentle. 

If,  therefore,  such  intersections  be  made,  and  the  curves  so 
determined  be  accurately  delineated  on  paper,  the  map  will 
present  such  a  representation  of  the  ground  as  will  show  its 
form,  its  inequalities,  and  its  striking  characteristics. 

183.  The  subject  divides  itself,  naturally,  into  two  parts. 
First,  To  make  the  necessary  examinations  and  measure- 
ments on  the  field. 

And,  2dly,  to  make  the  delineations  on  paper. 

For  the  former  of  these  objects,  the  theodolite  is  the  best 
instrument ;  the  common  level,  however,  will  answer  all  the 
purposes,  though  it  is  less  convenient. 

Before  going  on  the  field,  it  is  necessary  to  provide  a  num- 
ber of  wooden  stakes,  about  two  feet  in  length,  with  heads. 
These  stakes  are  used  to  designate  particular  points,  and  are 
to  be  driven  to  the  surface  of  the  ground.  A  nail  should 
then  be  driven  into  the  head  of  each  of  them,  to  mark  its 
centre. 

184.  We  shall,  perhaps,  be  best  understood,  by  giving  an 
example  or  two,  and  then  adding  such  general  remarks  as 
will  extend  the  particular  cases  to  all  others  that  can  occur. 

Let  A  (PI.  4,  Fig.  6),  be  the  summit  of  a  hill,  the  contour  of 


150  ELExMENTS    OF    SURVEYING. 

which  it  is  required  to  represent.  At  Jl^  let  a  stake  he  driven, 
and  let  the  axis  of  the  theodolite,  or  level,  he  placed  directly 
over  (he  nail  which  marks  its  centre.  From  ./?,  measure  any 
line  down  the  hill,  as  AB^  nsing  the  telescope  of  the  theodo- 
lite or  level  to  arrange  all  its  points  in  the  same  vertical  plane. 
Great  care  must  be  taken  to  keep  the  measuring  chain  hori- 
zontal, for  it  is  the  horizontal  distances  that  are  required.  At 
diflerent  points  of  this  line,  as  a,  h,  c,  d,  &c.,  let  stakes  be 
driven,  and  let  the  horizontal  distances  Jla,  ab,  be,  and  cd,  be 
carefully  measured.  In  placing  the  stakes,  reference  must 
be  had  to  the  abruptness  of  the  declivity,  and  the  accuracy 
with  which  the  surface  is  to  be  delineated  :  their  differences 
of  level  ought  not  to  exceed  once  and  a  half,  or  twice,  the 
distance  between  the  horizontal  planes  of  section. 

Having  placed  stakes,  and  measured  all  the  distances  along 
the  line  ^B,  run  another  line  down  the  hill,  as  JlC,  placing 
stakes  at  the  points  e,  /,  g,  and  //,  and  measuring  the  hori- 
zontal distances  *Me,  ef,  fg,  and  gh.  Run  also  the  line  *^D, 
placing  stakes  at  i,  /,  m,  and  «,  and  measuring  the  horizontal 
distances  Jli,  il,  hi,  and  mn. 

Each  line,  ^B,  AC,  AD,  running  down  the  hill  from  A^ 
may  be  regarded  as  the  intersection  of  the  hill  by  a  vertical 
plane  ;  and  these  secant  planes  an;  to  be  continued  over  all 
the  ground  which  is  to  be  surveyt'd.  If  the  work  is  done 
with  a  theodolite,  or  with  a  level  having  a  compass,  the  angles 
DAB  and  BAC,  contained  by  the  vertical  secant  planes,  can 
be  measured  ;  if  it  is  done  with  a  level,  having  no  needle,  let 
any  of  the  distances  ae,  bf,  ai,  bl,  «Sic.  be  measured  with  the 
chain,  and  there  will  then  be  known  the  three  sides  of  the 
triangles  Aae,  Abf,  Aai,  Abl,  Slc. 

Let  now,  the  difference  of  level  of  the  several  points  marked 
in  each  of  the  lines  AB,  AD,  AC,  be  determined. 

Tn  the  present  example  the  results  of  the  measurements 
and  levelling,  are — 

Line  AB. 
Distances.  Difference  of  Level. 

A  above  a  12  feet 


Aa  =  40  feet 
ab  =50   « 
be  =30    " 


a  above    6     8" 
b  above    c     9     " 


cd  =4G    "  c  above    d  11     *' 


CONTOUR    OP    GROUND. 


151 


Distances. 

•^e  =  28  feet 
cf  =45    ** 
fg=55    « 
gh  =49     " 


Distances. 
Ai=2  5  feet 
U    =55    " 
Im  =38    " 
nin  =48    " 

Angle  CAB  =  25% 


Line  AC. 

Difleience  of  Level 

A  above  ell  feet 
e    above  /    9     " 
/  above  ^12     " 
g  above  /i   14     " 

Line  AD. 

Difference  of  Level. 
A  above  i     9  feet 
i    above  Z  13    " 
Z    above  m    7    " 
m  above  fi  14    " 
Ande  DAB  =  30'. 


These  data  are  sufficient,  not  only  to  find  the  intersections 
of  horizontal  planes  with  the  surface  of  the  hill,  but  also  for 
delineating  such  curves  of  section  on  paper. 

Having  drawn  on  the  paper  the  line  AB,  lay  off  the  angle 
BAC  =  2  5%  and  the  angle  BAD  =  30°.  Then,  from  a  con- 
venient scale  of  equal  parts,  lay  off  the  distances  Aa,  ah,  be, 
cd,  Ae,  ef,  fg,  gh,  Ai,  il,  Im,  and  mn. 

Let  it  be  required  that  the  horizontal  planes  be  at  a  dis- 
tance of  eight  feet  from  each  other.  Since  A  is  the  highest 
point  of  the  hill,  and  the  difference  of  level  of  the  points  A 
and  a,  is  12  feet,  the  first  plane,  reckoning  downwards,  will 
intersect  the  line  traced  on  the  ground  from  A  to  B,  between 
A  and  a.  Regarding  the  descent  as  uniform,  which  we  may 
do  for  small  distances  without  sensible  error,  we  have  this 
proportion  ;  as  the  difference  of  level  of  the  points  A  and  a, 
is  to  the  horizontal  distance  Aa,  so  is  8  feet,  to  the  horizontal 
distance  from  A  to  where  the  first  horizontal  plane  will  cut 
the  line  from  A  to  B.  This  distance  being  thus  found,  and 
laid  off  from  A  to  o,  gives  o,  a  point  of  the  curve  in  which 
the  first  plane  intersects  the  ground.  The  points  at  which  it 
cuts  the  line  from  A  to  C,  and  the  line  from  A  to  D,  are  de- 
termined similarly,  and  three  points  in  the  first  curve  are  thus 
found. 

By  the  aid  of  the  sector,  the  graphic  operations  are  greatly 
facilitated.  Let  it  be  borne  in  mind,  that  the  descent  from  A 
to  a,  is  12  feet,  and  that  it   is  required,  upon  the  supposition 


152  ELEMENTS    OF    SURVEYING. 

of  the  descent  being  uniform,  to  find  that  part  of  the  distance 
corresponding  to  a  descent  of  8  feet.  Take  the  distance  from 
Ji  to  a,  in  the  dividers,  and  open  the  arms  of  the  sector  until 
the  dividers  will  reach  from  12  on  the  line  of  equal  parts,  on 
one  side,  to  12  on  the  line  of  equal  parts,  on  the  other.  Then, 
without  changing  the  angle,  extend  the  dividers  from  8  on 
one  side,  to  8  on  the  other ;  this  will  give  the  proportional 
distance  to  be  laid  off  from  Jl  to  o.  Or,  if  the  dividers  be 
extended  from  4  to  4,  the  proportional  distance  may  be  laid 
off  from  a  to  0. 

If  the  distances  to  be  taken  from  the  sector  fall  too  near 
the  joint,  let  multiples  of  them  be  used  ;  as  for  instance,  on 
the  French  sectors,  let  the  arms  be  extended  until  the  dividers 
reach  from  120  on  the  one,  to  120  on  the  other,  then  80  or 
40  will  be  the  proportional  numbers.  Other  multiples  may 
be  used,  though  it  is  generally  more  convenient  to  multiply 
by  10. 

The  second  plane  is  to  pass  8  feet  below  the  first,  that  is, 
16  feet  below  A,  or  4  feet  below  a,  a  being  12  feet  below  A. 
Take  the  distance  ah  in  the  dividers,  and  extend  the  sector, 
so  that  the  dividers  will  reach  from  8  to  (the  descent  from  a 
to  b  being  8  feet)  8,  or  from  80  to  80;  then,  the  distance  from 
4  to  4,  or  from  40  to  40,  being  laid  off  from  a  to  p,  gives  p,  a 
point  of  the  second  curve. 

The  difference  of  level  between  a  and  h  being  8  feet,  and 
the  difference  of  level  between  a  and  p  being  4  feet,  the  dif- 
ference of  level  between  p  and  h  must  also  be  4  feet :  hence, 
the  third  plane  will  pass  4  feet  below  6,  and  q,  determined  as 
above,  is  a  point  of  the  third  curve. 

The  difference  of  level  between  h  and  c  being  9  feet,  and 
consequently  between  q  and  c,  5  feet,  the  fourth  plane  will 
pass  3  feet  below  c,  and  r  is  a  point  of  the  fourth  curve. 

The  difference  of  level  between  c  and  d  being  11  feet,  the 
difference  of  level  between  r  and  </  is  8  feet ;  so  that  the  fifth 
plane  will  pass  through  c?,  which  is  consequently  a  point  of 
the  fifth  curve. 

The  points  at  which  the  horizontal  planes  cut  the  lines 
drawn  from  A  to  C,  and  from  A  to  D,  are  determined  in  a 
manner  entirely  similar.  Having  thus  made  as  many  diverg- 
ing sections  from  the  point  A  as  may  be  necessary,  and  found 
the  points  in  which    they  are  cut   by  horizontal   planes,  the 


CONTOUR    OF    GROUND.  153 

horizontal  curves  of  section  can  be  described  through  the 
several  corresponding  points.  These  curves  being  represented 
on  paper,  their  curvature  shows  the  form  of  the  surface  of  the 
hill  in  the  direction  of  a  horizontal  line  traced  around  it ;  and 
the  distances  between  them,  the  abruptness  or  gentleness  of 
the  declivity.  The  numbers  (8),  (16),  &c.  show  the  vertical 
distances  of  the  respective  planes  below  the  point  A. 

Having  drawn  the  horizontal  curves,  the  next  thing  to  be 
done  is  so  to  shade  the  drawing  that  it  may  represent  accu- 
rately the  surface  of  the  ground.  This  is  done  by  drawing  a 
system  of  small  broken  lines,  as  in  the  figure,  perpendicular 
in  direction  to  the  horizontal  curves  already  described.  In 
all  topographical  representations  of  undulating  ground,  the 
lines  of  shading  are  drawn  perpendicular  to  the  horizontal 
curves. 

,  185.  If  it  be  required  to  show  a  profile  of  the  ground,  let 
the  vertical  plane  passing  through  Jl  and  B  be  revolved  about 
its  intersection  with  a  horizontal  plane  passing  through  d. 
Erect  perpendiculars  at  r,  c,  q^  b,  p,  a,  o,  and  A,  to  the  line 
BA,  and  make  them  equal  to  the  respective  distances  of  these 
points  above  the  horizontal  plane  passing  through  d,  viz.  at  r, 
8  feet,  at  c,  11,  at  q,  16,  at  b,  20,  at  p,  24,  at  a,  28,  at  o,  32, 
and  at  A,  40  ;  and  through  the  extremities  of  the  perpen- 
diculars so  determined,  let  a  curve  be  traced  :  this  curve  will 
be  the  curve  of  the  hill  from  d  to  A. 


186.  This  method  of  finding  the  form  of  the  surface  of  a 
hill,  is  perhaps  the  best,  when  the  hill  slopes  gradually  from 
its  summit,  and  the  declivity  is  sufficiently  gentle  to  measure 
down  it.  If  the  surface  were  that  of  an  undulating  plain, 
the  following  method  is  preferable. 

Measure  a  horizontal  line,  as  AB  (PL  4,  Fig.  7),  running 
along  one  side  of  the  ground  to  be  surveyed.  At  the  ex- 
tremities A  and  B,  erect  the  perpendiculars  AD  and  BC,  and 
produce  them   until  all  the  land  to  be  surveyed  shall  be  in- 


154 


ELEMENTS    OF    SURVEYING. 


eluded  within  the  rectangle  ABCD.  On  the  line  JIB,  mea- 
sure the  horizontal  distances  JiE,  EF,  FG,  and  GB ;  and  on 
the  line  DC,  the  distances  !>//,  ///,  IL,  and  LC,  respeciivehj 
equal  to  the  distances  on  JIB:  that  is,  DH—JIE,  HI  -EF, 
&c.  The  distances  AE,  EF,  &c.  are  regulated  by  the  ine- 
qualities of  the  ground,  being  less  if  the  changes  in  the  sur- 
face are  considerable,  and  greater  if  the  changes  are  nearly 
uniform.  In  the  present  example,  they  are  100  feet  each, 
which,  upon  ordinary  ground,  would  render  the  work  tole- 
rably accurate. 

Let  stakes  be  driven  at  ./?,  E,  F,  G,  B,  C,  L,  /,  //,  and  D. 
Measme  now  the  line  »^D,  and  place  stakes  at  convenient 
distances,  as  a,  b,  c,  and  d  :  place  stakes  also  along  the  other 
lines  EH,  FI,  GL,  and  BC,  at  suitable  points,  and  measure 
the  respective  distances  Ef,  fg,  &c.  It  is  best  to  use  the  tel- 
escope of  the  theodolite  or  level,  in  order  to  run  the  lines 
and  place  the  stakes  truly.  In  placing  the  stakes,  it  should 
be  borne  in  mind,  that  the  dilTerence  of  level  of  either  two 
that  follow  each  other,  ought  not  to  be  very  great ;  and  also, 
that  they  ought  not  to  be  on  the  same  horizontal  plane. 

After  the  stakes  are  all  placed,  and  the  distances  measured, 
let  the  differences  of  level  of  all  the  points  so  designated  be 
found.  In  the  present  example,  the  results  of  the  measure- 
ments are — 


Fl 

Ft 

FL 

Ft 

PL 

Jla  =80 

AE=ioo 

EF=ioo 

FG  =  ioo 

GB--=ioo 

ab    =60 

Ef  =105 

Fi  =    74 

Gm=   96 

Bq  =    76 

be    =90 

fg   =    85 

ik    =115 

mn  =76 

qs     =    85 

cd    =55 

gk    =    71 

kl    =    60 

np   =   76 

St      =127 

dD=50 

hH=    74 

//     =    86 

pL  =   87 

tC    =    47 

Of  the  Levelling. 

Line  AD.      Line  EH.       Line  FI.      Line  GL.      Line  BC. 

Fl   .                             Ft 

Ft.    .                                 FL    .                                 Ft 

A  above  a   5 

E  below  A  3 

F  below  E  2 

G  below  F  1 

B  below  G  2 

a      "66 

E  above  /  9 

F above  i    3 

G  above  m  2 

B above  q    3 

b      «    c  7 

f      ''      g^ 

i      "     fc  5 

m     ''    n  1 

9       "     S    2 

C   below  d  2 

g       "hi 

/c      "     Z   2 

n      "    j9  2 

5         "is 

d  above  D  4 

h  below  //  3 

I   below  /  3 

p   below  L  4 

t  below  C  5 

The  heights  of  the  points  are  here  compared  with  each 
other,  two  and  two.  Before,  however,  we  can  conceive 
clearly  their  relative  heights,  we  must  assume  some  one  point. 


CONTOUR    OF    GROUND. 


155 


and  compare  all  the  others  with  it.    Let  the  point  A  be  taken. 


Tlie  height  of 

Ft 

Ft                                                    Pt                                                     PL 

A  above  a     5 

A  above  /  12 

A  above  fc  1 3 

A  above  p  ll 

A.     "      6  11 

A     " 

g-  15 

^       "       Z    15 

A     ''      L   1 

^       "       C    18 

A     « 

/i    16 

.5       «       /  12 

A     "      B  8 

A      "      d  16 

A     " 

//13 

A     ''     G   G 

A     "      9  11 

A     "      D20 

A     " 

F     5 

A     "      m    8 

.^       "        5    13 

A     ''      E   2 

c^        " 

i      8 

A     "     n    9 

A     «      t  16 

And  of  A  above  C,  1 1  feet. 

This  being  done,  a  mere  inspection  shows  us  the  highest 
and  lowest  points,  as  also  the  relative  heights  of  the  others, 
reckoning  upwards  or  downwards.  Let  them  be  now  written 
in  the  order  of  their  heights  above  the  lowest  point,  which  is 
D.  The  difference  of  level  between  A  and  D  being  20  feet, 
if  the  difference  of  level  of  each  of  the  points  below  A,  be 
taken  from  20  feet,  the  remainder  will  be  the  height  above 
D.     Arranging  them  in  their  order,  we  have 


c  above 

Ft. 

D    2 

H  above  D  7 

d     " 

D   4 

k 

*       D  7 

h     " 

D   4 

s 

'      Dl 

t      " 

D    4 

f 

'        7)8 

g.        u 

D    5 

I 

«      D% 

I      " 

D    5 

b 

"       D  9 

p  above  Z)    9 

B 

above  D 

12 

7      " 

D     9 

L 

(C 

D 

13 

C     « 

D     9 

G 

u 

D 

14 

n      " 

/)  11 

a 

cc 

D 

15 

i       " 

D  12 

F 

c< 

D 

15 

m     " 

D  12 

E 

a 

D 

17 

A  above  D,  20  feet. 

Let  the  surface  be  now  intersected  by  a  system  of  hori- 
zontal planes  at  3  feet  from  each  other, — the  first  plane  being 
3  feet  above  the  point  D.  The  point  h  being  9  feet  above  D, 
and  the  point  c,  2  feet,  the  first  plane  will  intersect  the  line 
AD  between  h  and  c  :  let  the  proportional  distance  be  found, 
as  in  ihe  last  example,  and  one  point  u,  of  the  first  cune, 
will  be  known.  The  point  //  being  7  feet  above  D,  the  plane 
will  cut  the  line  DC  between  //  and  J),  and  finding  the 
proportional  distance  as  before,  a  second  point,  v,  of  the  first 
curve,  is  determined.  Now,  in  drawing  this  curve,  it  will  be 
borne  in  mind,  that  the  point  h  is  but  4  feet  above  D,  and 
consequently  but  1  foot  above  the  first  curve,  so  that  the  curve 
muet  run  from  u  towards  h,  and  then  turn  around  to  the 
poini  V.  The  curve  is  maked  (3),  which  is  the  number  of 
feet   that  it  is  above  the  lowest  point,  and  similarly  for  the 


156  ELEMENTS  OP  SURVEYING. 

Other  curves  of  the  figure  ;  their  number  showmg  their  dis- 
tance in  feet  above  D.  Around  the  point  d,  there  is  a  small 
curve,  also  marked  (3).  By  inspecting  the  table,  it  will  be 
seen  that  cZ  is  4  feet  above  D,  and  that  the  ground  descends 
from  d  towards  D  and  c :  d  \s  therefore  a  small  knowl,  the 
top  of  which  is  cut  off  by  the  first  plane.  To  show  that  the 
ground  descends  from  d,  even  below  the  first  curve  (3),  a 
plane  is  passed  1  foot  below  the  first  plane,  or  2  feet  above 
D ;  the  curve  of  section  is  marked  (2). 

The  second  of  the  system  of  curves,  or  the  one  marked  (6), 
must  cut  the  line  JID  between  h  and  c,  the  line  EH  between 
/  and  g,  the  line  FI  between  k  and  /,  and  also  between  I 
and  /;  it  also  cuts  EH  again  between  h  and  H,  and  the  line 
DC  between  fZ"  and  D. 

The  third  curve,  or  the  one  passing  9  feet  above  D,  passes 
through  6,  cuts  the  line  EH  between  E  and  /,  the  line  Fl 
between  i  and  k;  thence  it  passes  to  p,  and  thence  to  the 
line  DC,  crossing  it  between  /  and  L.  There  is  also  another 
curve  determined  by  this  plane,  since  it  passes  through  the 
points  C  and  q,  leaving  the  points  t  and  s  below  it.  This 
curve  runs  from  C  to  p,  and  from  p  to  q,  as  drawn  in  the 
figure. 

The  fourth  curve,  marked  (12),  intersects  the  line  AD 
between  a  and  h,  EH  between  E  and  /,  FI  at  i,  GL  at  m, 
and  BC  at  B.  There  is  also  another  curve  lying  around 
the  point  L  :  for  the  plane  cuts  GL  between  p  and  L,  the 
line  DC  between  C  and  L,  and  again  between  /  and  L. 

The  fifth  curve,  marked  (15),  cuts  AD  at  a,  EH  between 
E  and  /,  and  AB  at  F.  The  sixth  curve,  marked  (18),  cuts 
AD  between  A  and  a,  and  AB  between  A  and  E.  The 
proportional  distances  in  all  these  cases  are  found  as  in  the 
first  example. 

In  looking  on  the  little  map  that  has  been  made,  it  is 
clearly  indicated  by  the  curves  and  shading,  that  the  ground 
slopes  from  A  to  c,  thence  rises  to  d,  and  then  slopes  to  D. 
It  also  slopes  from  A  along  the  line  AB ;  from  E  in  the 
directions  /  and  i,  from  F  in  the  directions  i  and  m,  from  G 
in  the  directions  m  and  J5,  and  from  B  in  the  direction  Bqs. 
The  ground  also  slopes  from  L  to  p,  thence  to  I  and  /i,  and 
along  to  curve  (2),  and  the  point  D  :  and  on  the  other  side 
10  t  and  s. 


CONTOUR    OF    GROUND.  157 

187.  Thus  far,  we  have  said  nothmg  of  a  plane  of  reference, 
which  is  any  horizontal  plane  to  which  the  levels  of  all  the  points 
are  referred.  In  the  first  example,  the  plane  of  reference  was 
assumed  through  the  point  A  (PI.  4,  Fig.  6),  and  tangent  to 
the  surface  of  the  hill :  in  the  second  example,  it  was  taken 
through  D,  the  lowest  point  of  the  work. 

188.  After  having  compared  all  the  levels  with  any  one 
point,  the  highest  and  the  lowest  points  are  at  once  discovered, 
and  the  plane  of  reference  may  be  assumed  through  either 
of  them.  As,  however,  in  comparing  the  heights  of  objects, 
the  mind  most  readily  refers  the  higher  to  the  lower,  it  is  con- 
sidered preferable  to  take  the  plane  of  reference  through  the 
lowest  point.  We  say,  for  example,  that  the  summit  of  a 
hill  is  200  feet  above  a  given  plain,  and  not  that  the  plain 
is  200  feet  below  the  summit  of  the  hill ;  so  we  say  that  a 
plain  is  at  a  given  distance  above  a  river,  and  not  that  the 
river  is  below  the  plain.  This  habit  of  the  mind  of  referring 
the  higher  to  the  lower  objects,  suggests  the  propriety  of 
taking  the  plane  of  reference  through  the  lowest  point,  where 
there  is  no  other  circumstance  to  influence  its  selection.  If, 
however,  there  are  fixed  and  permanent  objects,  to  which,  as 
points  of  comparison,  the  mind  readily  refers  all  others,  sucli 
as  the  court-house  or  church  of  a  village,  the  market-house 
of  a  town,  or  any  public  building  or  monument,  it  is  best  to 
assume  the  plane  of  reference  through  some  such  point ; 
for,  it  must  be  kept  in  mind,  that  the  ends  proposed  in  the 
construction  of  maps,  are,  to  present  an  accurate  view  of  the 
ground,  its  form,  its  accidents,  and  the  relative  position  of 
objects  upon  it. 

189.  When  the  plane  of  reference  is  so  chosen  that  the 
points  of  the  work  fall  on  different  sides  of  it,  all  the  refer- 
ences on  one  side  are  called  positive,  and  those  on  the  other, 
negative.  The  curves  having  a  negative  reference  are  dis- 
tinguished by  placing  the  minus  sign  before  the  number ; 
thus  —  (     ). 

190.  In  topographical  surveys,  great  care  should  be  taken 
to  leave  some  permanent  marks,  with  their  levels  written  on 
them  in  a  durable  manner.  For  example,  if  there  are  any 
rocks,  let  one  or  more  of  them  be  smoothed,  and  the  vertical 
distance  from  the  plane  of  reference  marked  thereon  :  or  let 


158  ELEMENTS  OF  SURVEYING. 

the  vertical  distance  of  a  point  on  some  prominent  building, 
be  ascertained  and  marked  permanenily  on  the  building. 
Such  points  shoukl  also  be  noted  on  the  maj),  so  lliat  a  pei^son, 
ahhough  unacquainted  with  the  ground,  could  by  means  of 
the  map,  go  upon  it,  and  trace  out  all  the  points,  t(  gether 
with  their  difTerences  of  level. 

191.  The  manner  of  sliading  the  map,  so  as  to  indicate 
\he  hills  and  slopes,  consists  in  drawing  the  lines  of  shading 
perpendicular  to  the  horizontal  curves,  as  already  explained. 

192.  In  making  topograpliical  surve^^s,  the  great  point  is, 
to  determine  the  curves  which  result  from  the  intersection 
of  llie  surface  by  iiorizontal  planes. 

Besides  the  methods  of  diverging  and  parallel  sections,  we 
may  assume  a  point  on  the  surface  of  a  hill,  place  the  level 
tliere,  and  run  a  line  of  level  round  the  hill,  measuring  the 
angles  at  every  turn  or  cliange  of  direction  :  such  a  line  wi'l 
be  a  horizontal  curve.  Then,  levelling  up  or  down  the  hill,  a 
distance  equal  to  the  vertical  distance  between  the  horizontal 
curves,  let  a  second  curve  be  traced;  and  shnilarly  for  as 
many  curves  as  may  be  necessary. 

This  method,  however,  is  not  as  good  as  the  methods  before 
explained. 

193.  Besides  representing  the  contour  of  the  ground,  it  is 
often  necessary  to  make  a  map  which  shall  indicate  the 
cultivated  field,  the  woodland,  the  marsh,  and  the  winding 
river.  For  this,  certain  characters,  or  conventional  signs, 
have  been  agreed  upon,  as  the  representatives  of  things,  and 
when  these  are  once  fixed  in  the  mind,  they  readily  suggest 
the  objects  for  v;hich  they  stand.  Those  which  are  given  in 
Plates  5  and  G,  have  been  ado[.ted  by  the  Engineer  Depart- 
ment, and  are  used  in  all  plans  .'vnd  maps  made  by  the  United 
States  Engineers. 

It  is  very  desirable  that  a  uniform  method  of  delineation 
should  be  adopted,  and  none  would  seem  to  be  of  higher  au- 
thority than  that  establisiied  by  the  Topographical  Beaureau. 
It  is,  therefore,  recommende(i^  that  the  convention;d  signs 
given  ill  Plates  5  and  C,  be  carefully  studied  and  closely  fol- 
lowed. 


OP  SURVEYING  HARBOURS.  159 

CHAPTER  VII. 

Of  Surveying  Harbours. 

194  There  are  two  objects  to  be  attained  m  the  survey 
of  a  harbour. 

1st.  To  survey  the  shore  along  higli  or  low  water  mark, 
to  trace  its  windings,  to  note  the  points  and  inlets,  and  to 
ascertain  and  fix  the  places  at  which  rivers  and  creeks  dis- 
charge tlieniselves.     And, 

2dly.  To  discover  tlie  channels,  their  direction,  depth,  and 
width  ;  the  position  of  shoals,  the  depth  of  water  upon  them, 
the  nature  of  the  bottom,  and  in  short,  whatever  may  contri- 
bute to  easy  and  safe  navigation. 

To  determine  the  principal  jwints  and  trace  the  shore. 

195.  Having  provided  a  boat  and  crew,  row  once  or  twice 
around  the  harbour,  mark  tiie  more  important  and  prominent 
points ;  at  which,  let  station-slaves  with  flags  upon  them  be 
erected. 

Then,  measure  a  base  line,  and  form  a  series  of  triangles, 
having  their  angles  at  the  stations  already  chosen.  Let  the 
angles  of  ihese  triangles  be  measured  with  the  tlieodolite, 
and  their  sides  calculated;  afler  whicli,  the  high  or  low  water 
mark  may  be  traced  along  the  shore  with  the  compass,  as 
hereafter  explained. 

Let  us  suppose  that  Plate  G  is  a  map  of  a  harbour  to  be  sur- 
veyed. 

We  see,  by  inspecting  it,  that  the  upper  end  of  the  lake  at 
t/?,  the  termination  of  the  harbour  at  2>,  tlie  rocks  at  C,  the 
point  at  D,  the  fisheries  at  iJ,  and  tlie  two  bays  at  F  and  G, 
are  all  prominent  points.  At  these  points,  therefore,  let  sta- 
tion-flags be  placed.  Then,  measure  the  distance  from  A  to 
B,  for  a  base  line,  and  let  the  work  be  begun  at  J2. 

Remove  the  stafTat  ,;-7,  and  place,  by  means  of  a  plumb-line, 
the  axis  of  the  theodolite  over  the  station.  Then,  having 
levelled  the  instrument,  bring  the  0  of  the  eyeglass  vernier  to 
coincide  with  the  0  of  the  linjl),  and  tighten  the  clamp-screw 
of  the  vernier  plate.     Loosen  the  lower  clanip-scrcw,  and  luru 


160  ELEMENTS    OP    SURVEYING. 

the  body  of  the  instrument  until  the  telescope  comes  nearly  on 
the  base  line  AB :  then  tighten  the  clamp-screw  K,  and  by 
means  of  the  lower  tangent-screw  L,  and  the  thumb-screw  Z, 
bring  the  intersection  of  the  spider's  lines  to  coincide  with 
the  bottom  of  the  staff  at  B.  Then,  direct  the  lower  tele- 
scope to  the  same  point,  without  moving  the  limb. 

Having  thus  placed  the  instrument,  examine  the  opposite 
vernier,  and  if  it  stands  exactly  at  180^,  enter  the  direction 
from  A  to  B^  00,  as  in  the  j5eld  notes  below. 

But  if  the  reading  of  the  opposite  vernier  exceeds  180^, 
enter  half  the  excess  for  the  direction.  If  the  reading  is  less 
than  180^,  take  half  of  what  it  falls  short,  from  360^,  and 
enter  the  remainder  for  the  direction  from  A  to  B. 

The  two  verniers  are  used  to  avoid  any  error  which  might 
arise  from  a  defective  graduation  of  the  limb,  or  from  an  im- 
perfect centring.  A  false  centring,  is  when  the  centre  of  the 
limb  or  vernier  plate  is  out  of  the  axis  of  the  instrument,  and 
w^hen  this  is  the  case,  it  is  a  fruitful  source  of  error. 

Both  verniers  should  be  read  at  every  observation,  and  a 
mean  between  the  readings  taken  for  the  true  direction. 

Having  thus  placed  the  instrument,  loosen  the  clamp-screw 
of  the  vernier  plate,  and  direct  the  telescope  to  station  E. 
Note  the  degrees,  and  take  a  mean  between  the  readings  of 
the  two  verniers  for  the  minutes,  and  enter  the  result  opposite 
direction  AE,  as  in  the  field  notes.  Do  the  same  for  the 
station  6r,  and  then  enter  in  a  column  to  the  right,  the  angle 
formed  by  the  lines  which  join  the  stations.  The  angle  will 
either  be  the  difference  of  the  readings,  or  the  difference  be- 
tween 360®  and  the  larger  reading,  plus  the  smaller  reading. 

Station  A, 


Direction  AB 

.     00 

Direction  AE 

.     730  25' 

BAE  =  13'^  2  5' 

\  Direction  AG      . 

.    138°  35' 

EAG  =  65'  10' 

Having  sighted  to  all  the  stations  which  can  be  seen  from 
A,  remove  the  instrument  and  replace  the  station  staff. 

Tal^e  the  theodolite  to  B,  the  otiier  extremity  of  the  base 
line.  It  is  now  required  to  place  the  instrument  in  such  a 
manner  that  the  horizontal  limb  shall  have  the  same  relative 
position  with  the  base  line  AB,  as  it  had  at  the  station  A 


OF    SURVEYING    HARBOURS.  161 

For  this  purpose,  after  having  levelled  the  instrurnetit,  add 
180^  to  the  direction  from  A  to  B,  and  place  the  0  of  the  eye- 
glass vernier  at  the  point  so  found.  Then  clamp  the  vernier 
plate,  after  which  direct  both  the  telescopes  to  station  A.  It 
is  now  plain  that  the  line  of  the  limb  drawn  through  0  and 
180''  will  coincide  with  the  base  line  JIB,  the  o  being  towards 
»4,  as  before  ;  hence  the  theodolite  is  like  placed. 

Having  clamped  the  limb,  loosen  the  clamp-screw  of  the 
vernier  plate,  and  sight  to  stations  E  and  C,  and  enter  the 
dhections  as  below. 

Station  B, 


Direction  BA     . 

.   1800  00' 

Direction  BE     , 

.   1390  40' 

ABE=iO^  20' 

Direction  BC     . 

.     570  12' 

EBC  =  82'  28' 

Having  sighted  to  all  the  stations  which  can  be  seen  from 
B,  replace  the  station-staff  and  remove  the  instrument  to 
station  C.  To  the  direction  BC  =  5l^  12'  add  180°,  and  the 
sum  is  237'^  12'.  Having  levelled  the  instrument,  place  the 
0  of  the  eyeglass  vernier  at  237®  12',  and  then  sight  to  station 
B.  The  limb  of  the  theodolite  will  then  have  the  same 
relative  position  as  at  the  stations  A  and  B,  Then  sight  to 
E  and  Z),  and  enter  the  directions  as  below. 

Station  C. 


Direction  CB  . 

.     237°  12' 

Direction  CE  . 

.       180°  27'   1 

BCE  =  5G'  45' 

Direction  CD  . 

.       150°  27'   1 

ECD  =  30^  00' 

Remove  the  instrument  to  E.  To  the  direction  C^=  180  27', 
add  180®,  and  the  sum  will  be  360°  27'.  Then  place  the  0  of 
the  vernier  at  27',  and  direct  the  telescope  to  C.  Or,  the 
theodohte  may  be  placed  at  E  by  adding  180°  to  the  direction 
AE,  as  taken  from  A,  or  to  the  direction  BE,  as  taken  from 
B,  and  then  directing  the  telescope  to  A  or  B. 

By  placing  the  instrument  in  a  similar  manner  at  every 
station,  the  line  of  the  limb  passing  through  0  and  180®,  con- 
tinues parallel  to  the  base  AB,  the  0  being  constantlv  in  the 
direction  towards  A.  The  instrument  is  thus  placed  at  all 
the  stations,  and  the  following  are  the  results  of  the  measure- 
ments of  the  angles. 

^  11 


162 


ELEMENTS    OF    SURVEYING. 


Station  E. 


Direction  EC   . 

.   .   0°  27' 

Direction  EB  . 

.  319°  40' 

CEB  =  iO^  47' 

Direction  EA  . 

.   253°  25' 

BEA  =  66'   15 

Direction  EG  . 

.    199"  15' 

J1EG  =  5A'   10' 

Direction  EF  . 

.    164°  10' 

GEF=35^  05' 

Direction  ED  . 

.      94°  10' 

FEI)=io^  00' 

Station  D, 


Direction  DC  . 

.    330"  27' 

Direction  DE  . 

.   274°  10' 

CDE  =  5Q^  17' 

Direction  DF  . 

.    2250  50' 

EDF=48^  20' 

Station  F, 


Direction  FD  . 

.  .  45°  50' 

Direction  FE  . 

.    344°  10' 

DFE=6i'  40' 

Direction  FG  . 

.   2470  10' 

EFG=9i'  00' 

Station  G. 


Direction    GF  .  . 

.  67°  10' 

Direction   GE  .  . 

.    19°  15' 

FGE  =  41'  55' 

Direction   GJl  .  . 

318°  35' 

EGA  =  6i^  40' 

The  measurements  which  have  been  made,  enable  us  to 
calculate  the  lengths  of  the  lines  joining  the  several  stations. 
For,  commencing  vi^ith  the  triangle  AEB,  we  know  all  the 
angles  and  the  base  line  AB ;  we  can,  therefore,  find  the 
sides  EB,  EA.  We  shall  then  know  one  side  and  all  the 
angles  of  the  triangle  CEB,  and  by  pursuing  the  calculation, 
the  sides  of  all  the  triangles  can  be  readily  found. 

Smce  the  third  angle  of  a  triangle  can  always  be  found 
when  two  of  the  angles  are  known,  it  may  seem  unnecessary 
lo  measure  all  the  angles.  But  when  the  three  angles  are 
measured  and  their  sum  found  equal  to  180°,  the  work  is 
proved  to  be  right,  and  this  verification  should  never  be 
omitted. 

[t  is  not  probable  that  the  sum  of  the  three  measured  an- 
gles will  be  exactly  equal  to  180°.  But  they  ought  not  to 
difTer  much  from  it.     If  each  of  them  be  measured  several 


OF    SURVEYING    HARBOURS.  t 

times,  and  a  mean  of  the  measurements  be  taken,  the  errors 
of  observation  and  of  the  instrument  will  be  much  dimhiished. 

196  The  method  of  determining  points  by  a  series  of  con- 
secutive triangles,  is  called  the  method  by  triangulation.  It 
may  be  extended  to  any  number  of  triangles,  and  if  the  three 
angles  of  every  triangle  be  measured,  and  the  work  carefully 
verified  at  each  step,  there  is  little  danger  of  error.  We  have 
applied  the  method  only  in  the  survey  of  a  harbour,  but  it 
may  be  used  with  equal  advantage  in  all  surveys  in  which 
long  lines  are  to  be  determined,  and  is,  indeed,  the  only  one 
that  can  be  relied  on,  where  great  accuracy  is  required. 

Of  the  Manner  of  using  the  Compass. 

197.  The  compass  is  often  used  in  connection  with  the 
theodolite,  and  although  a  rude  instrument,  may  yet  be  relied 
on  for  the  shorter  lines  and  smaller  parts  of  a  survey.  The 
following  is  the  manner  of  keeping  the  field  notes. 

Divide  a  paper  into  two  equal  parts,  by  two  parallel  lines 
near  to  each  other,  and  consider  each  part  as  a  separate  leal 
or  page.  Each  leaf  is  divided  into  three  spaces,  and  the 
middle  one  is  generally  smaller  than  either  of  the  others, 
which  are  equal. 

The  notes  begin  at  the  bottom  of  the  first  page,  and  run 
up  the  page  to  the  top.  They  then  commence  again  at  the 
bottom  of  the  next  page,  and  run  up  to  the  top  ;  thence  to 
the  bottom  of  the  third  page,  and  thus,  for  as  many  pages  as 
the  work  may  require. 

When  the  compass  is  used  in  the  way  we  are  about  to 
explain,  the  distances  to  objects  which  lie  on  the  rioht  or  left 
of  the  courses,  are  determined  by  means  of  offsets. 

The  beginning  of  every  course  is  designated  in  the  middle 
column  b}^  o,  and  the  bearing  is  entered  directly  above.  The 
other  figures  of  the  middle  column,  express  the  distances  from 
the  beginning  of  each  course  to  the  oflfsets,  and  those  in  the 
side  columns  indicate  the  lengths  of  the  oflfsets,  or  the  dis- 
tances  to  objects  on  the  right  or  left  of  fhe  compass  lines. 

The  stations,  at  which  the  compass  is  placed,  are  designated 
by  0  in  the  middle  column,  and  the  bearing  of  each  course  is 
entered  directlv  above. 


164 


ELEMENTS    OF    SURVEYING. 


To  explain  more  definitel}^  the  manner  of  using  the  com 
pass  on  the  field,  let  us  suppose  that  we   have   determined, 
with  the  theodolite,  the  prominent  parts  of  the  harbour.    Place 
the  compass  at  .^  (Plate  6),  and  take  the  bearing  of  the  line 
^E,  which  is  S  12°  W. 


Enter  this  bearing  at  A.  Then  measure  along  the  line 
AE  any  distance,  as  Aa  equal  to  130  yards,  and  make  an 
ofi'set  to  the  lake,  which  we  measure  and  find  to  be  50  yards. 
Enter  the  130  in  the  middle  column,  and  as  the  lake  lies  on 
the  right  (in  going  from  A  to  E),  we  insert  the  50  in  the 
right  hand  column. 

We  then  measure  along  the  line  AE  to  b,  350  yards  from 
A.  Here  we  make  a  second  oflTset  to  the  lake,  and  find  it  to 
be  equal  to  100  yards.  Having  entered  the  distances  in  the 
notes,  we  measure  to  q,  the  point  where  the  line  AE  crosses 
the  creek,  and  w^e  enter  the  distance  from  A,  Alb  yards. 

At  rf,  we  lay  off  an  offset  on  the  left,  to  the  pond,  70  yards  : 
at  e,  an  offset  to  the  mouth  of  the  creek,  150  yards  :  and  at 
E,  where  the  course  terminates,  an  offset  to  the  lake,  of  160 
yards.     The  entire  distance  from  .^  to  E  is  800  yards. 

At  E,  w^e  take  the  bearing  to  H,  which  is  N  50®  E.  Hav» 
ing  measured  along  this  line  to/,  315  yards,  we  make  an 
offset  to  the  pond,  on  the  left,  of  50  yards,  and  to  the  shore, 
on  the  right,  of  90  yards.     Having  entered  these  distances, 


OF  SURVEYING  HARBOURS.  165 

we  recommence  the  notes  at  315  below,  which  we  suppose  U) 
be  at  the  bottom  of  the  second  page.  Having  reached  H^ 
the  extremity  of  the  course,  we  enter  the  entire  distance  from 
jG,  680  yards.  We  next  take  the  bearing  to  /,  S  52*^  E.  Wc 
then  measure  the  distances  to  m,  n,  p,  and  /,  and  enter  them, 
together  with  the  offsets,  as  in  the  notes. 

198.  It  is  also  well  to  make,  in  the  columns  on  the  right 
and  left,  such  sketches  of  the  ground,  fields,  houses,  creeks 
and  rivers,  as  will  afford  the  means  of  making  an  accurate 
delineation  on  paper. 

199.  In  making  the  plan  of  the  harbour,  it  might  be  found 
convenient  to  use  the  plain-table  in  connexion  with  the  theod- 
olite and  compass.  For  example,  we  might  place  the  plain- 
table  at  G,  and  having  fixed  stations  at  the  principal  points 
of  the  sliore,  between  G  and  F,  we  would  sight  to  each  of 
them  :  then  remove  the  table  to  F,  and  do  the  same  for  that 
station  :  we  should  thus  determine  the  points  between  F  and 
G,  with  reference  to  the  line  GF, 

Of  Plotting, 

200.  The  lines  of  the  triangles  determined  with  the  theodo- 
lite, can  be  plotted  in  the  manner  already  explained.  It  would 
be  better,  however,  to  use  the  instrument  which  we  are  about 
to  describe,  and  which  is  called 

THE    CIRCULAR    PROTRACTOR. 

201.  This  instrument  consists  of  a  brass  circular  limb  (PI, 
2,  Fig.  4),  of  about  six  inches  in  diameter,  with  a  moveable 
index  AB,  having  a  vernier  at  one  extremity  A,  and  a  milled 
screw  at  the  other  extremity  B,  with  a  concealed  cog-wheel 
that  works  with  the  cogs  of  the  limb,  and  thus  moves  the 
index  JIB  about  the  centre  of  the  protractor.  At  the  centre 
of  the  protractor  is  a  small  circular  glass  plate,  on  which  two 
lines  are  cut  ;  the  point  of  their  intersection,  is  the  exact 
centre  of  the  instrument.  The  limb  is  generally  divided  to 
half  degrees  ;  the  degrees  are  numbered  from  0  to  360. 

At  the  0  point,  and  at  the  opposite  extremity  of  the  diameter 
passing  through  that  point,  are  small  lines  on  the  inner  edge 
of  the  limb;  the  two  extremities  of  the  diameter,  perpendicular 
to  this  latter,  are  also  designated  in  the  same  way. 


166  ELEMENTS  OF  SURVEYING. 

Two  angular  pieces  of  brass,  each  having  a  small  and 
sharp  steel  pin  at  its  extremity,  are  fastened  to  the  index, 
and  revolve  freely  around  the  lines  ab  and  cd.  The  small 
screws,  a,  b,  c,  and  d,  move  them  in  the  directions  of  the  lines 
abf  cd,  for  the  purpose  of  bringing  the  steel  pins  exactly  into 
the  line  which  passes  through  the  0  of  the  index  and  the 
centre  of  the  protractor. 

To  adjust  them  to  their  places,  place  the  centre  of  the  pro- 
tractor over  a  marked  point,  and  the  0  of  the  index  to  the  0 
of  the  limb.  Then  mark  the  place  of  the  index  by  the  pins  : 
after  which,  turn  the  index  180°,  and  see  if  the  pins  will  mark 
the  same  points  as  before.  If  they  do,  the  index  is  adjusted  ; 
if  they  do  not,  correct  the  error  with  the  screws  a,  b,  c,  and  d. 

To  lay  off  an  angle  with  the  Protractor. 

202.  Let  its  centre  be  placed  over  the  angular  point,  and 
the  diameter  passing  through  0  and  180°,  on  the  given  line. 
Turn  the  screw  that  works  the  index,  until  the  0  of  the  ver- 
nier coincides  with  the  division  corresponding  to  the  given 
angle  ;  then  let  the  angular  brass  pieces  be  turned  down  ; 
the  points  dotted  by  the  steel  pins  will  show  the  direction  of 
the  required  line. 

If  this  line  does  not  pass  through  the  angular  point,  the 
pins  are  out  of  place,  and  must  be  adjusted. 

First  Method  of  Plotting. 

203.  Suppose  it  were  required  to  make  the  plan  of  the 
harbour  on  a  scale  of  450  yards  to  an  inch. 

Divide  the  length  of  the  base  line  ^B,  which  we  will  sup- 
pose equal  to  1140  yards,  by  450,  and  the  quotient  2.53  will 
express  the  length  which  is  to  represent  the  base  line  on  the 
paper  (Art.  33). 

Draw  an  indefinite  line  ^B,  to  represent  the  base,  and 
having  chosen  any  point,  as  .^,  for  the  first  station,  lay  off 
2.53  inches  to  B.  The  other  extremity  of  the  base  line  will 
thus  be  determined. 

Then,  place  the  circular  protractor  at  A,  and  lay  off  the 
angle  BAE,  and  then  the  angle  EAG.  Next,  place  the 
protractor  at  B,  and  lay  off  the  angles  ABE  and  EBC. 
The  intersection  of   the   lines  AE  and  BE  will  determine 


OF  SURVEYING  HARBOURS.  167 

the  station  E.  Let  the  protractor  be  then  placed  at  this 
point,  and  all  the  angles  of  station  E,  laid  down. 

The  point  G,  where  EG  intersects  AG,  and  the  point  C, 
where  EC  intersects  BC,  will  then  be  found. 

By  placing  the  protractor  at  C  and  G,  we  can  determine 
the  points  D  and  F,  when  the  place,  on  the  paper,  of  all  the 
stations  will  be  known. 

To  vuiite  the  work  done  with  the  compass,  spread  the  com- 
pass-notes before  you,  and  draw  through  A  a  line  to  represent 
the  meridian.  This  line  makes  an  angle  of  12^  with  the 
course  JlE. 

Then,  lay  off  from  the  scale  the  distances  Aa,  Ab,  Aq,  Ac, 
Ad,  Ae,  and  at  the  several  points  erect  perpendiculars  to  AE. 
Lay  off  on  these  perpendiculars  the  lengths  of  the  offsets,  and 
the  curve  traced  through  the  points  so  determined,  will  be 
the  margin  of  the  lake. 

At  E,  draw  a  parallel  to  the  meridian  through  A,  and  lay 
down  the  course  EH,  which  makes  an  angle  of  50°  with  the 
meridian.  Then,  lay  down  the  several  distances  to  the  off- 
sets, and  draw  the  offsets  and  lay  off  their  lengths.  Do  the 
same  for  the  course  HI,  and  all  the  compass-work  will  be 
plotted. 

Had  there  been  work  done  with  the  plain-table,  it  could 
easily  be  united  to  that  done  with  the  theodolite. 

Second  Method  of  Plotting. 

204.  Place  the  centre  of  the  protractor  near  the  centre  of 
the  paper,  and  draw  a  line  through  the  points  0  and  180^. 
This  line  will  have  the  same  position  with  the  circular  pro- 
tractor that  the  base  line  AB  had  with  the  limb  of  the 
theodolite. 

Lay  off  then  from  the  0  point  an  arc  equal  to  the  direction 
from  A  to  E,  also  an  arc  equal  to  the  direction  AG,  and 
through  the  centre  point,  and  the  points  so  determined,  draw 
lines.  Lay  off  in  succession,  in  a  similar  manner,  the  direc- 
tions taken  at  all  the  stations  ;  and  through  the  centre  point, 
and  the  points  so  determined,  draw  lines,  and  designate  each 
by  the  letters  of  the  direction  to  which  it  corresponds. 

Now,  since  all  the  lines  drawn  on  the  paper  have  the  same 
position   with  the  circular  protractor,   as   the   corresponding 


168  ELEMENTS    OF      SURVEYING. 

lines  on  the  ground  have  with  the  limb  of  the  tlieodolite,  it 
follows  that  each  direction  will  be  parallel  to  its  corresponding 
line  upon  the  ground. 

Hence,  any  line  may  be  drawn  parallel  to  that  passing 
through  0  and  180°,  to  represent  the  base  line  AB.  Having 
drawn  such  a  line,  and  marked  a  point  for  the  station  Jl,  lay 
off  the  length  of  the  base,  and  the  extremity  will  be  the 
station  B. 

Through  A  and  B^  so  determined,  draw  parallels  respec- 
tively to  the  lines  corresponding  to  the  directions  JIE  and 
BE,  and  the  point  of  intersection  will  determine  station  E. 
Through  B  and  E  draw  parallels  to  the  lines  which  corre- 
spond to  the  directions  BC,  CE,  and  their  point  of  intersection 
will  determine  station  C.  Through  C  and  E  draw  lines 
parallel  to  the  lines  corresponding  to  the  directions  CE  and 
ED,  and  the  point  of  intersection  will  determine  D.  In  a 
similar  manner  we  may  determine  the  stations  F  and  G. 

Of  surveying  a  harbour  for  the  purpose  of  determining  the  depth 
of  loater,  <^c. 

205.  When  a  harbour  is  surveyed  for  the  second  object,  viz., 
for  the  purpose  of  ascertaining  the  channels,  their  depth  and 
width,  the  positions  of  shoals,  and  the  depth  of  water  thereon, 
other  means  must  be  used,  and  other  examinations  made  in 
addition  to  those  already  referred  to. 

Let  buoys  be  anchored  on  the  principal  shoals  and  along 
the  edges  of  the  channel,  and  using  any  of  the  lines  already 
determined  as  a  base,  let  the  angles  subtended  by  lines  drawn 
from  its  extremities,  to  the  buoys  respectively,  be  measured 
with  the  theodolite.  Then,  there  will  be  known  in  each 
triangle  the  base  and  angles  at  the  base,  from  which  the  dis- 
tances to  the  buoys  are  easily  found  ;  and  hence,  their  posi- 
tions become  known. 

Having  made  the  soundings,  and  ascertained  the  exact 
depth  of  the  water  at  each  of  the  buoys,  several  points  of  the 
harbour  are  established,  at  which  the  precise  depth  of  the  water 
is  known  ;  and  by  increasing  the  number  of  the  buoys,  the 
depth  of  the  water  can  be  found  at  as  many  points  as  may  be 
deemed  necessary. 

206.  If  a  person  with  a  theodolite,  or  with  any  other  in- 
strument adapted  to  the  measurement  of  horizontal  angles,  be 


OF  SURVEYING  HARBOURS.  169 

stationed  at  each  extremity  of  the  base  Hne,  it  will  not  be 
necessary  to  establish  buoys.  A  boat,  provided  with  an  an- 
chor, a  sounding  line,  and  a  signal  flag,  has  only  to  throw  iis 
anclior,  hoist  its  signal  flag,  and  make  the  sounding,  while 
the  persons  at  the  extremities  of  the  base  line  measure  the 
angles  ; — from  these  data,  the  precise  place  of  the  boat  can 
be  determined. 

207.  There  is  also  another  method  of  determining  the 
places  at  which  the  soundings  are  made,  that  admits  of  great 
despatch,  and  which,  if  the  observations  be  made  with  care, 
affords  results  sufficiently  accurate. 

Having  established,  trigonometrically,  three  points  which 
can  be  seen  from  all  parts  of  the  harbour,  and  having  provided 
a  sextant,  let  the  sounding  be  made  at  any  place  in  the  har- 
bour, and  at  the  same  time  the  three  angles  subtended  by  lines 
drawn  to  the  three  fixed  points,  measured  with  the  sextant. 

The  problem,  to  find  from  these  data  the  place  of  the  boat 
at  the  time  of  the  sounding,  is  the  same  as  example  6,  page  74. 

It  is  only  necessary  to  measure  two  of  the  angles,  but  it  is 
safest  to  measure  the  third  also,  as  it  affords  a  verification 
of  the  work. 

The  great  rapidity  with  which  angles  can  be  measured  with 
the  sextant,  by  one  skilled  in  its  use,  renders  this  a  most  ex- 
peditions method  of  sounding  and  surveying  a  harbour. 

The  sextant  is  not  described,  nor  are  its  uses  explained  in 
these  Elements,  because  its  construction  combines  many  phi- 
losophical principles,  with  which  the  surveyor  cannot  be  sup- 
posed conversant. 

208.  There  is  yet  another  method  of  finding  the  soundings, 
which,  although  not  as  accurate  as  those  already  explained, 
will,  nevertheless,  afford  results  approximating  nearly  to  the 
truth.  It  is  this  : — Let  a  boat  be  rowed  uniform.ly  across  the 
harbour,  from  one  extremity  to  the  other  of  any  of  the  lines 
determined  trigonometrically.  Let  soundings  be  made  con- 
tinually, and  let  the  precise  time  of  making  each  be  care- 
fully noted.  Then,  knowing  the  length  of  the  entire  line, 
the  tPme  spent  in  passing  over  it,  as  also  the  time  of  making 
each  of  the  soundings,  we  can  easily  find  the  points  of  the 
line  at  which  the  several  soundings  were  made  ;  and  hence, 
the  depth  of  water  at  those  points  becomes  known.     Sound- 


170  ELEMENTS    OF    SURVEYING. 

ings  may  thus  be  made  along  any  number  of  known  lines, 
and  a  comparison  of  the  depths  found  on  different  lines,  at  or 
near  their  points  of  intersection,  will  show  with  what  degree 
of  accuracy  the  work  has  been  done. 

209.  If  the  soundings  are  made  in  tide-waters,  the  time  of 
high  tide  must  be  carefully  noted,  as  also  the  precise  time 
of  making  the  sounding,  so  that  the  exact  depth  at  high  or 
low  water  may  be  known.  It  is  considered  preferable  to  re- 
duce the  soundings  to  high-water  mark,  and  the  number  of 
feet  which  the  tide  rises  and  falls  should  be  noted  on  the  map. 

210.  Having  plotted  the  work  done  with  the  theodolite,  as 
also  the  outline  of  the  harbour  traced  with  the  compass,  it  re- 
mains to  delineate  the  bottom  of  the  harbour ;  and  this  is  done 
by  means  of  horizontal  curves  (Chap.  VI),  which  have  already 
been  used  to  represent  broken  or  undulating  ground. 

Let  the  plane  of  reference  be  taken  through  high-water 
mark,  or  to  coincide  with  the  surface  of  the  water  at  high 
tide.  The  accuracy  with  which  the  bottom  of  the  harbour  is 
to  be  delineated,  will  guide  us  in  fixing  the  distance  between 
the  horizontal  planes  of  section. 

The  first  horizontal  plane  should  be  passed  at  a  distance 
below  the  shallowest  point  that  has  been  sounded,  equal  to 
the  number  of  feet  fixed  upon  for  the  distance  between  the 
planes  of  section  ;  and  the  curve,  in  which  it  intersects  the 
bottom  of  the  harbour  determined  as  in  Chapter  VI.  And 
similarly,  for  the  other  horizontal  planes  of  section. 

Having  thus  delineated  the  bottom  of  the  harbour,  and  noted 
on  the  map  the  distance  of  each  intersecting  plane  below  the 
plane  of  reference,  let  such  lines  be  drawn  as  will  indicate  the 
channels,  shoals,  sunken  rocks,  and  direction  of  the  current. 

In  the  example  given  in  plate  6,  soundings  have  been  made 
in  three  directions  from  the  sand-bar  in  the  harbour,  and  also 
from  the  rocky  shore  across  to  the  light-house. 


PRINCIPLES    OF    NAVIGATION.  171 

CHAPTER   VIII. 

Of  Navigation. 

1.  We  have  given,  in  the  preceeding  chapters  of  this  work, 
various  apphcations  of  Trigonometry.  We  propose,  in  the  fol- 
lowing chapter  to  explain  the  best  methods  of  determining  the 
place  of  a  ship  at  sea.  This  application  constitutes  the  science 
of  Navigation. 

There  are  two  methods  of  determining  the  place  of  a  ship  at 
sea. 

1st.  When  a  ship  departs  on  her  voyage,  if  we  note  her 
courses  and  the  distance  sailed,  we  may,  at  any  time,  by  means 
of  Plane  Trigonometry,  determine  her  place  very  nearly. 

2nd.  By  means  of  observations  on  the  heavenly  bodies  and 
the  aid  of  Spherical  Trigonometry,  we  may  determine  with  great 
accuracy,  the  exact  place  of  the  ship.  This  method  is  called 
Nautical  Astronomy. 

The  first  part  of  Navigation,  viz.  the  cases  which  can  be 
solved  without  the  aid  of  observations  on  the  heavenly  bodies, 
will  be  alone  treated  of  in  this  chapter. 

2.  The  earth  is  nearly  spherical.  For  the  purposes  of  Navi- 
gation it  may  be  considered  as  perfectly  so.  It  revolves  round 
one  of  its  diameters,  called  the  aocis,  in  about  twenty-four  hours. 

3.  The  great  circle,  whose  poles  are  the  extremities  of  the 
axis,  is  called  the  equator'.  The  poles  of  the  equator  are  called 
the  poles  of  the  earth — the  one  is  called  the  north  pole,  and  the 
other  the  south  pole. 

4.  Every  great  circle  which  passes  through  the  poles  cuts  the 
equator  at  right  angles,  and  is  called  a  ineindian  circle.  Every 
place  on  the  surface  of  the  earth  has  its  own  meridian ;  but  for 
the  purposes  of  Geography  and  Navigation,  all  these  meridians 
are  reckoned  from  a  particular  meridian,  which  is  called  \hQji7'st 
meridian.  The  English  have  fixed  on  the  meridian  of  Green- 
wich Observatory  for  the  first  meridian. 

5.  The  longitude  of  any  place  is  the  arc  of  the  equator  inter- 
cepted between  the  meridian  of  that  place  and  the  first  meridian, 
and  is  east  or  west,  according  as  the  place  hes  east  or  west  of 
the  first  meridian. 

6.  The  difference  of  longitude  of  two  places  is  the  arc  of  the 
equator  included  between  their  meridians ;  this  arc  is  equal  to 
the  difference  of  longitudes  when  they  are  of  the  same  name, 
and  to  their  sum,  when  they  are  of  different  names. 

7.  The  latitude  of  a  place  is  its  distance  from  the   equator 


172 


ELEMENTS    OF    SURVEYING. 


measured  on  the  meridian  of  the  place,  and  is  north  or  south  ac- 
cording as  the  place  lies  north  or  south  of  the  equator. 

8.  'I'he  small  circles  drawn  parallel  to  the  equator,  are  called 
parallels  of  latitude.  The  arc  of  any  meridian  intercepted  be- 
tween the  parallels  passing  through  any  two  places,  measures 
the  difference  of  latitude  of  those  places;  this  difference  is  found 
by  subtracting  their  latitudes  wdien  they  are  of  the  same  name, 
and  by  adding  them  when  they  are  of  different  names. 

9.  The  sensible  horizon  of  any  place  is  an  imaginary  plane, 
supposed  to  touch  the  earth  at  that  place,  and  to  be  extended  to 
the  heavens.  A  plane  passing  through  the  centre  of  the  earth, 
and  parallel  to  the  sensible  horizon,  is  called  the  rational  hori- 
zon. The  north  and  south  line,  is  the  intersection  of  the  plane 
of  the  meridian  circle  with  the  sensible  horizon,  and  the  line 
which  is  drawn  perpendicular  to  this,  is  called  the  east  and  west 
line. 

10.  The  course  of  a  ship,  at  any  point,  is  the  angle  which  her 
track  makes  with  the  meridian.  So  long  as  the  course  is  un- 
changed, the  ship  w^ould  sail  in  a  straight  line,  provided  the 
meridians  were  truly  parallel ;  but  as  the  meridians  bend  con- 
stantly toward  the  pole,  the  direction  of  her  path  is  continually 
changing,  and  she  moves  in  a  curve  called  the  i^humh  line.  The 
course  of  a  ship  is  indicated  by  the  mariner's  compass. 

11.  The  marine7'^s 
compass  consists  of  a 
circular  card,  whose 
circumference  is  di- 
vided into  thirty-two 
equal  parts  called 
pom^5;  each  point  be- 
ing subdivided  into 
four  equal  parts  call- 
ed quarter  points. 

To  the  under  side 
of  this  card  a  slender 
bar  of  magnetized 
steel,  called  a  needle, 
is  permanently  at- 
tached. The  direc- 
tion of  the  needle 
corresponds  to  the 
diameter  NS.  The 
diameter  EW,  at  right  angles  to  NS,  is  intended  to  indicate  the 
east  and  west  points.  The  points  of  the  compass  are  thus  read: 
beginning  at  the  north  pohit,  and  going  east,  we  say,  north  and 


PHINCIPLES    OF    NAVIGATION,  173 

by  eastj  north  north  east,  north  east  and  by  north,  north  east; 
and  so  on,  round  the  compass,  as  indicated  by  the  letters. 

The  card  being  permitted  to  turn  freely  on  the  pin,  on  which 
it  is  poised  as  a  centre,  the  line  NS  will  always  indicate  the 
true  magnetic  meridian,  but  this,  as  we  have  seen  it  Art.  153, 
page  127,  is  not  the  true  meridian,  and  hence,  the  variation  must 
always  be  allowed  for. 

On  the  interior  of  the  compass  box,  in  which  the  card  swings, 
are  two  marks,  a  and  b,  which  lie  in  a  line  passing  through  the 
centre  of  the  card,  and  the  compass  box  is  so  placed  that  this 
line  shall  be  parallel  to  the  keel  of  the  ship.  Consequently,  if  a 
be  placed  towards  the  bow  of  the  vessel,  the  point  which  it 
marks  on  the  card  will  show  the  compass  course,  for  the  line 
NS  is  always  north  and  south,  and  EW  east  and  west.  The 
course  is  generally  read  to  quarter  points,  and  as  a  quadrant  con- 
tains eight  points,  each  point  will  be  equal  to  60° --8=  11°  15'; 
and  a  quarter  point  ==11°  15' ^4  =  2°  48'  45".  The  table  oi 
Rhumbs,  after  the  Traverse  Table,  shows  the  degrees  of  each 
course  to  quarter  points. 

1 2.  A  ship's  rate  of  sailing  is  determined  by  means  of  an  in- 
struments, called  the  log,  and  an  attached  line  called  the  log  line. 
The  log  is  a  piece  of  wood  in  the  form  of  a  sector  of  a  circle, 
the  rim  of  which  is  loaded  with  lead,  so  that  when  it  is  heaved 
into  the  sea  it  assumes  a  vertical  position.  The  log  line  is  so 
attached  as  to  draw  the  log  square  against  the  water,  that  it  may 
not  be  drawn  along  after  the  ship  as  the  line  unwinds  from  the 
reel,  by  the  ship's  forward  motion. 

The  time  in  which  the  log  line  unwinds  from  the  reel,  is 
noted  by  a  sand-glass,  through  which  the  sand  passes  in  half  a 
minute;  that  is,  in  the  one  hundred  and  twentieth  part  of  an 
hour. 

For  convenience,  the  log  line  is  divided  into  equal  parts, 
marked  by  knots,  and  each  part  is  equal  to  the  one  hundred  and 
twentieth  part  of  a  nautical  or  geographical  mile.* 

Now,  since  half  a  minute  is  the  one  hundred  and  twentieth 
part  of  an  hour,  and  each  knot  measures  the  one  hundred  and 
twcnticlli  part  of  a  mile,  it  follows  that  the  number  of  knots 
reeled  off  while  the  half  minute  glass  runs  out,  will  indicate  how 
fast  the  ship  sails  per  hour. 


*  A  geogra):)hical  mile  is  one  minute,  or  one-sixtieth  of  a  degree,  measured  on  the 
equator.  Taking  the  diameter  at  7916  English  miles,  the  geographical  mile  will 
be  about  C079  feet ;  that  is,  about  oi.e-sixth  greater  than  the  English  mile,  which  is 
6280  feet. 


174 


ELEMENTS    OF    SURVEYING. 


Of  Plane  Sailing* 


13.  Let  the  diagram 
EPQ  represent  a  por- 
tion of  the  earth's  sur- 
face, P  the  pole,  and 
EQ  the  equator.  Let 
AB  be  any  rhumb  hne, 
or  track  described  by  a 
ship  in  saiUng  from  A 
to  B, 

Conceive  the  path  of 
the  ship  to  be  divided 
into  very  small  parts,  and  through  the  points  of  division  draw 
meridians,  and  also  the  parallels  of  latitude  b'b,  c'c,  d'd,  e'e,  and 
B'B:  a  series  of  triangles  will  thus  be  formed,  but  so  small  that 
each  may  be  considered  as  a  plane  triangle. 

In  these  triangles,  the  sum  of  the  bases 

Ab'  +  be  +  cd!  4-  de' + e/=  AB\ 

which  is  equal  to  the  diiference  of  latitude  between  the  points 
A  and  B.     Also, 

b'b-{-cc-\-d'd-\-eeA-fB'  =  BB\ 
which  is  equal  to  the  distance  that  the  ship  has  departed  from 
the  meridian  AB'P,  and  is  called  the  departure  in  sailing  from 
A  to  B. 

Therefore,  the  distance  sailed,  the 
difference  of  latitude  made,  and  the 
departure,  are  correctly  represented  by 
the  hypothenuse  and  sides  of  a  right 
angled  triangle,  of  which  the  angle  op- 
posite the  departure  is  the  course. 

When  any  two  of  the  four  things 
above  named  are  given,  the  other  two 
can  be  determined.  This  method  of 
determining  the  place  of  a  ship  reduces 
all  the  elements  to  the  parts  of  a  plane 
triangle,  and  hence  is  called  plane 
sailing. 


EXAMPLES. 


LA  ship  from  latitude  47°  30'  N.  has  sailed  S.  W.  by  S.  98 
miles.  What  latitude  is  she  in,  and  what  departure  has  she 
made? 


PRINCIPLES    OF    NAVIGATION. 


.75 


Let  C  be  the  place  sailed  from,  CB  the 
meridian,  and  BCA  the  course,  which  we 
find  from  the  table  of  rhumbs  to  be  equal  to 
33°  45';  then  AC  will  be  the  distance 
sailed,  equal  to  98  miles.  Also,  AB  will 
be  the  departure,  and  CB  the  difference  of 
latitude. 

Then  by  the  formulas  for  the  solution  of 
right  angled  triangles. 


As  radius 
AC         98 
:  COS.  C  33°  45' 
CB  81.48 

Latitude  left 


10.000000 
1.991226 
9.919846 


1.911072 


As  radius 
CA  98 

;  sin.  C  33°  45' 
AB  54.45 


10.000000 
1.991226 
9.744739 


1.735965 


47°  30'  N. 
Dif.  Iat.=:z81.48  miles==81.48  minutes^   1°  22'  S. 

In  latitude  46°  08'. 

Departure  54.45  miles. 

2.  A  ship  sails  24  hours  on  a  direct  course,  from  latitude 
38°  32'  N.  till  she  arrives  at  latitude  36°  56'  N.  The  course  is 
between  S.  and  E.  and  the  rate  5|  miles  an  hour.  Required 
the  course,  distance,  and  departure. 

Lat.  left   38°  32'  N.  24  x5|=r  132  miles = distance. 

In  lat.       36°  56' 

Diff.        1°  36'-96  miles. 


As  dist. 
:  radius 
:  :  diff.  lat. 


132 


96 


2.120574 

10.000000 

1.982271 


cos.  course  43°  20'     9.801697 


As  radius  10.000000 

dist.  132  2.120574 

:  sin.  course  43°  20'    9.836477 
dep. 


90.58       1.957051 


Hence,  the  course  is  S.  43°  20'  E.,  and  the  departure  90.58 
miles  east. 

3.  A  ship  sails  from  latitude  3°  52'  S.  to  latitude  4°  30'  N., 
the  course  being  N .  W.  by  W.  |-W  :  required  the  distance  and 
departure.  Arts.  Dist.  1065  miles  ;  dep.  938.9  miles  W. 

4.  Two  points  are  under  the  same  meridian,  one  in  latitude 
52°  30'  N.,  the  other  in  latitude  47°  10'  N.  A  ship  from  the 
southern  place  sails  due  east,  at  the  rate  of  9  miles  an  hour,  and 
two  days  after  meets  a  sloop  that  had  sailed  from  the  other :  re- 
quired the  sloops  direct  course,  and  distance  run. 

Arts.  Course  S.  53°  28'  E.;  dist.  537.6  miles. 

5.  If  a  ship  from  latitude  48°  27'  S.,  sail  S.  W.  by  W.  7 
miles  an  hour,  in  what  time  will  she  reach  the  parallel  of  50° 
south?  Ans.  23.914  hours. 


176 


ELEMENTS    OF    SURVEYING. 


Of  Traverse  Sailing, 

14.  When  a  ship,  in  going. from  one  place  to  another,  sails  on 
different  courses,  it  is  called  Traverse  Sailing.  The  determi- 
nation of  the  distance  and  course,  from  the  place  of  departure  to 
the  place  of  termination,  is  called  compounding  or  working  the 
traverse.  This  is  done  by  the  aid  of  the  "  Traverse  Table," 
which  has  already  been  explained,  and  the  method  is  in  all 
respects  similar  to  that  adopted  in  the  Prob.  of  Art.  147,  p.  115. 


EXAMPLES. 


1.  A  ship  from  Cape 
Clear,  in  lat.  51°  25'  N., 
sails,  1st,  S.  S.  E.  \  E.  16 
miles;  2nd,  E.  S.  E.  23 
miles  ;  3rd,  S.  W.  by  W.  \ 
W.  36  miles;  4th,  W.  f  N. 
12  miles  ;  5th,  S.  E-.  by  E. 
A  E.  41  miles:  required 
the  distance  run,  the  direct 
course,  and  the  latitude. 

We  first  form  the  table 
below,  in  which  w^e  enter 
the  courses,  from  the  table 
of  rhumbs,  omitting  the  sec- 
onds, and  then  enter  the  lat- 
itudes and  departures,  taken 
from  the  traverse  table,  to 
the  nearest  quarter  degree. 
Thus,  in  taking  the  latitude 
and  departure  for  25°  18' 
we  take  for  25i°.  The  dif- 
ference of  latitudes  gives  the 
line  A  G,  and  the  difference 
of  departures  the  line  GF. 


Traverse 

Table. 

Courses.                       [Dist's.  1 

Diff.  of  Latitude. 

Departure. 

No.l 

Angle. 

N. 

S. 

E. 

[     W. 

2 
3 
4 
5 

S.  S.  E.  i  E.    .  . 

E.  S.  E 

S.  W.  by  W.  i  W. 

w.  1  N. . . : . . 

S.  E.  by  E.  1  E. 

25°  18' 
67°  30' 
61°  52' 
8P33 
5<J°    3' 

16 
23 
36 
12 
41 

1.77 

14.47 

8.80 

17.04 

21.12 

6.83 
21.25 

35.14 

31.71 
11.87 

1.77 

61.43 
1.77 

63.22 
43.58 

43.58 

Diff. 

59.66 

19.64 

PRINCIPLES    OF    NAVIGATION.  177 

Latitude  left  51°  25'  N. 

Difference  of  latitude  59.66  miles  =   1°  00'  S. 


In  latitude  50°  25'  N. 

Then,  by  formulas  for  the  solution  of  right  angled  triangles, 


we 


have 


As  A  G,  diff.  lat.  59.66     1 .775683 
:  radius,  10.000000 

:  :  departure       19.64    1.293141 


tangt.  course  18°  13  9.517458 


As  sin.  course  18°  13'    9.495005 
:  departure  19.64     1.293141 

:  :  radius  10.000000 

:  distance  62.83   T.798136 


Therefore  the  direct  course  is  S.  18°  13'  E.,  and  the  distance 
62.83  miles. 

Of  Plotting, 

15.  There  is  yet  another  method  of  finding  the  direct  course 
and  distance,  much  practiced  by  seamen,  although  it  does  not 
afford  a  high  degree  of  accuracy.  It  is  a  method  by  plotting, 
which  requires  the  use  of  a  mariner's  scale  and  a  pair  of  dividers 

One  of  the  scales  marked  on  the  mariner's  scale,  is  a  scale  of 
chords,  commonly  called  a  scale  of  rhumbs,  being  divided  to  every 
quarter  point  of  the  compass ;  and  there  is  also  a  second  scale 
of  chords  divided  to  degrees.  Both  of  these  scales  are  con 
structed  in  reference  to  the  same  common  radius,  so  that  the 
chords  on  the  scale  of  rhumbs  correspond  to  those  on  the  scale  of 
marked  chords.  The  manner  of  using  the  scales  will  appear  in 
plotting  the  last  example. 

To  construct  this  traverse,  describe  a  circle  with  a  radius 
equal  to  the  chord  of  60°  and  draw  the  meridian  NS.  Then 
take  from  the  line  of  rhumbs  the  chord  of  the  first  course  2^ 
points,  and  apply  it  from  »S*  to  1,  to  the  right  of  A^^S*.  since  the 
course  is  southeasterly,  and  draw  >S'l  ;  take,  in  like  manner,  the 
chord  of  the  second  course,  6  points,  from  *S  to  2,  and  lay  it  off 
also  to  the  right  of  the  meridian  line.  Apply  the  chord  of  the 
third  course,  5|  points,  from  8  to  3,  to  the  left  of  the  meridian; 
the  fourth  course,  7}  points  from  N  to  4,  to  the  left  of  NS,  this 
course  being  northwesterly;  and,  lastly,  apply  the  chord  of  the 
fifth  course,  5|  points,  from  S  to  5,  to  the  right  of  NS,  and  join 
all  the  lines  as  in  the  figure. 

In  the  direction  .41,  lay  off  the  distance  ^17/— 16  miles  from 
a  scale  of  equal  parts,  and  through  the  extremity  H,  draw  HC 
parallel  to  A2,  and  lay  off  HC  —  2S  miles.  Draw  CD  parallel 
to  .43,  and  lay  off  CD  =  36  miles;  then  draw  DE  parallel  to  .44,- 
and  lay  off  12  miles;  and  lastly  draw  EF  parallel  to  A5,  and 
lay  off  41  miles,  and  F  will  be  the  place  of  the  ship.  Hence, 
we  conclude  that  AF  will  be  the  distance  made  good,  and  GAF 
will  be  the  course.  -.q 


ITS  ELEMENTS    OF    SURVEYING. 

Applying,  then,  tlie  distance  AF  to  the  scale  of  equal  parts, 
we  ftnd  it  equal  to  62|  miles ;  and  applying  the  chord  Sa  to  the 
scale  of  chords  we  find  the  course  GAF=l'^l°. 

2.  A  ship  sails  from  a  place  in  latitude  24°  32^  N.,  and  runs 
the  following  courses  and  distances,  viz.  1st,  S.  W.  by  W.  dist. 
45  miles  ;  2nd,  E.  S.  E.  dist.  50  miles;  3rd,  S.  W.  dist.  30  miles , 
4th,  S.  E.  by  E.  dist.  60  miles;  5th,  S.  W.  by  S.  j  W.  dist. 
63  miles  :  required  her  latitude,  and  the  direct  course  and  dis- 
tance from  the  place  left  to  the  place  arrived  at,  and  the  con- 
struction of  the  traverse. 

.        5  Lat.  22°  3'  N.,  course  S. 
^^^'  (  Dist.  149.2  miles. 

3.  A  ship  from  lat.  28°  32^  N.  has  run  the  following  courses, 
viz.  1st,  N.  W.  by  N.  20  miles;  2nd,  S.  W.  40  miles;  3rd,  N. 
E.  by  E.  60  miles;  4th,  S.  E.  55  miles;  5th,  W.  by  S.  41 
miles ;  6th,  E.  N.  E.  66  miles :  required  her  latitude,  the  dis- 
tance made  good,  and  the  direct  course,  also  the  construction  of 
the  traverse.  Ans.  Dist.  70.2  miles,  course  E. 

4.  A  ship  from  lat.  41°  12^  N.  sails  S.  W.  by  W.  21  miles; 
S.  W.  i  S.  31  miles;  W.  S.  W.  i  S.  16  miles;  S.  |  E.  18 
miles;  S.  W.  i  W.  14  miles;  then  W.  |  N.  30  miles:  required 
the  latitude,  the  direct  course,  and  the  distance. 

Lat.  40°  05',  course  S.  52*  49'  W. 


^^^-  '^  Dist.  111.7  miles. 

5.  A  ship  runs  the  following  courses,  viz. 

1st,  S.  E.  40  miles ;  2d,  N.  E.  28  miles ;  3d,  S.  W.  by  W. 
52  miles ;  4th,  N.  W.  by  W.  30  miles ;  5th,  S.  S.  E.  36  miles; 
6th,  S.  E.  by  E.  58  miles :  required  the  direct  course,  and  dis- 
tance made  good. 

J  Direct  course  S.  25°  59^  E.,  or  S.  S.  E.  k  E.,  nearly. 
'^^^'  i  Distance  95.87  miles. 

6.  A  ship  sails,  1st,  N.  W.  by  W.  i  W.  40  miles;  2nd,  N. 
W.  by  ^  N.,  41  miles;  3rd,  N.  by  E.  16.1  miles;  and  4th, 
N.  E.  i  E.  32.5  miles :  required  the  distance  made,  and  the 
direct  course. 

Ans.  Course  21°  54'  West  of  North.     Dist.  94.6  miles. 

These  examples  will,  perhaps,  suffice  to  illustrate  the  princ» 
pies  of  plane  sailing. 

The  longitude,  made  on  any  course,  cannot  be  determined  by 
these  methods,  for  this  being  the  arc  of  the  equator  intercepted 
between  two  meridians,  cannot  be  found  under  the  supposition 
that  the  meridians  are  parallel. 

The  most  simple  case  of  finding  the  difiference  of  longitude  is 
when  the  ship  sails  due  east  or  due  west :  this  is  called  Parallel 
Sailing. 


PRINCIPLES    OF    NAVIGATION. 


179 


Parallel   Sailinsc. 

16.  The  entire  theory  of  parallel  sailing  is  comprehended  in 
the  following  proposition,  viz. 

The  cosine  of  the  latitude  of  the  parallel,  is  to  the  distance 
rurif  as  radius  to  the  difference  of  longitude. 

Let  JQ/f  represent  the  equa- 
tor, and  FDN  any  parallel  of 
latitude :  then,  CI  will  be  the 
radius  of  the  equator,  and  EF 
the  radius  of  the  parallel. 

Suppose  FD  to  be  the  dis- 
tance sailed,  then  the  difference 
of  longitude  will  be  measured 
by  /Q,  the  arc  intercepted  on 
the  equator.  Then,  since  sim- 
ilar arcs  are  to  each  other  as 
their  radii  (Bk.  V.  Prop.  xi. 
Cor.),  we  have, 

EF    :     CI    ::     dist.  FD     :     diff.  long.  IQ. 

But  EF  is  the  sine  of  PF,  or  cosine  of  FI,  the  latitude,  and 
CI  is  the  radius  of  the  sphere  :  hence, 

COS.  lat.     :     R     :  :     distance     .     diff.  longitude. 

Corollary.  If  we  denote  by  D  the  distance  between  any  two 
meridians,  measured  on  the  parallel  whose  latitude  is  L ;  and 
by  D^  the  distance  between  the  same  meridians  measured  on  the 
parallel  whose  latitude  is  U,  the  arcs  will  be  similar,  and  W€ 
shall  have  (Bk.  V.  Prop.  xi.  Cor.), 

COS.  L     :     D     :  :     cos.  L'     :     D\ 
that  is,  COS.  L     :     cos.  L'     :  :     D     :     D'. 

Hence,  when  the  longitude  made  on  different  parallels  is  the 
same,  the  distances  sailed  are  proportional  to  the  cosines  of  the 
parallels  of  latitude. 

By  referring  to  Th.  V.  page  43,  we  see  that  in  any  right  an- 
gled triangle 

R     :     COS.  angle  at  base     :  :     hyp.     :     base, 
or         cos  E     :     R     ::     EG     :     EC; 

and  by  comparing  this  with  the  proportion, 

cos.  lat.     :     R     :  :     dist.     ■     diff.  long. 

We  see,  that  if  one  leg  of  a  right  angled  tri- 
angle represent  the  distance  run  on  any  paral- 
lel, and  the  adjacent  acute  angle  be  made  equal 


E 


180  ELEMENTS    OF    SURVEYING. 

to  the  degrees  of  latitude  of  that  parallel,  then  the  hypothenuse 
will  represent  the  difference  of  longitude.  It  follows  therefore, 
that  any  problem  in  parallel  sailing,  may  be  solved  as  a  simple 
case  of  plane  sailing.  For,  if  we  regard  the  latitude  as  the 
course,  the  distance  run  as  the  base,  the  difference  of  longitude 
will  be  the  hypothenuse  of  the  corresponding  right  angled 
triangle. 

EXAMPLES. 

1.  A  ship  from  latitude  53°  56^  N.,  longitude  10°  18^  E.,  has 
sailed  due  west,  236  miles  :  required  her  present  longitude. 

By  the  rule 

As  COS.  lat.     53°  56'     -         -         •         -  9.769913 

:  radius 10.000000 

:  :  distance    236            ...         -  2.372912 

:  diff.  long.     400.8        -  -         -       2.602999 

Long,  left      -        -         10°  18'  E. 

Diff.  long. =— degrees  =  6°  40'  W. 

Long,  in       -        -  3°  38'  E. 

2.  If  a  ship  sails  E.  126  miles,  from  the  North  Cape,  in  lat. 
71°  10'  N.,  and  then  due  N.,  till  she  reaches  lat.  73°  26'  N.; 
how  far  must  she  sail  W.  to  reach  the  meridian  of  the  North 
Cape? 

Here  the  ship  sails  on  two  parallels  of  latitude,  first  on  the 
parallel  of  ,71^  10',  and  then  on  the  parallel  of  73°  26',  and 
makes  the  same  difference  of  longitude  on  each  parallel. 
Hence,  by  the  corollary. 

As  cos.  lat.  71°  10'  arith  comp.  0.491044 
:  distance  126  -         -     2.100371 

:  :  cos.  lat.    73  26  -         -     9.455044 

:  distance       111.3  -         -     2.046459 

3.  A  ship  in  latitude  32°  N.  sails  due  E.  till  her  difference  of 
longitude  is  384  miles  :  required  the  distance  run. 

Ans.  325.6  miles. 

4.  If  two  ships  in  latitude  44°  30'  N.,  distant  from  each  other 
216  miles,  should  both  sail  directly  S.  till  their  distance  is  256 
miles,  what  latitude  would  they  arrive  at  ? 

Ans.  320  irN. 

5.  Two  ships  in  the  parallel  of  47°  54'  N.,  have  9°  35'  dif- 
ference of  longitude,  and  they  both  sail  directly  S.,  a  distance  of 
836  miles :  required  their  distance  from  each  other  at  the  parallel 
left,  and  at  that  reached.         j^^s.  385.5  miles,  and  479.9  miles. 


PRINCIPLES    OF    NAVIGATION.  181 

Middle  Latitude  Sailing. 

1 7.  Having  seen  how  the  longitude  which  a  ship  makes  when 
sailing  on  a  parallel  of  latitude  may  be  determined,  we  come 
now  to  examine  the  more  general  problem,  viz.  to  find  the  lon- 
gitude which  a  ship  makes  when  sailing  upon  any  oblique  rhumb. 

There  are  two  methods  of  solving  this  problem,  the  one  by 
what  is  called  middle  latitude  sailing,  and  the  other  by  Merca- 
tor^s  sailing.  The  first  of  these  methods  is  confined  in  its  ap- 
plication, and  is  moreover  somewhat  inaccurate  even  where 
applicable  ;  the  second  is  perfectly  general,  and  rigorously  true ; 
but  still  there  are  cases  in  which  it  is  advisable  to  employ  the 
method  of  middle  latitude  sailing,  in  preference  to  that  of  Mer- 
cator's  sailing.  It  is,  therefore,  proper  that  middle  latitude  sail- 
ing should  be  explained,  especially  since,  by  means  of  a  correc- 
tion to  be  hereafter  noticed,  the  usual  inaccuracy  of  this  method 
may  be  rectified. 

Middle  latitude  sail- 
ing proceeds  on  the 
supposition  that  the  de- 
parture or  sum  of  all 
the  meridional  distan- 
ces, h^h,  &c,  d^df  &c. 
from  O  to  T,  is  equal 
to  the  distance  M'M  of 
the  meridians  of  O  and 
T,  measured  on  the 
middle  parallel  of  lati- 
tude between  O  and  T. 

The  middle  latitude  is  half  the  sum  of  the  two  extreme  lati- 
tudes, if  they  are  both  of  the  same  name,  and  to  half  their  dif- 
ference if  they  are  of  contrary  names. 

This  supposition  becomes  very  inaccurate  when  the  course  is 
small,  and  the  distance  run  great ;  for  it  is  plain  that  the  middle 
latitude  distance  will  receive  a  much  greater  accession  than  the 
departure,  if  the  track  OT  cuts  the  successive  meridians  at  a 
very  small  angle. 

The  principal  approaches  nearer  to  accuracy  as  the  angle  O 
of  the  course  increases,  because  then  as  but  little  advance  is 
made  in  latitude,  the  several  component  departures  lie  more  in 
the  immediate  vicinity  of  the  middle  parallel  M'M.  But  still,  in 
very  high  latitudes,  a  small  advance  in  latitude  makes  a  con- 
siderable difference  in  meridional  distance ;  hence,  this  principle 
is  not  to  be  used  in  such  latitudes,  if  much  accuracy  is  required. 

By  means,  however,  of  a  small  table  of  corrections,  con- 
stnicted  by  Mr.  Workman,  the  imperfections  of  the  middle  lat- 


182 


ELEMENTS    OF    SURVEYING. 


itude  method  may  be  removed,  and  the  results  of  it  rendered  in 
all  cases  accurate.  This  table  w^e  have  given  at  the  end  of  this 
work. 

The  rules  for  middle  latitude  sailing  may  be  thus  deduced. 

We  have  seen,  in  the  first  case  of  plane  sail- 
ing, that  if  a  ship  sails  on  an  oblique  rhumb 
from  O  to  T,  that  the  hypothenuse  OT  will 
represent  the  distance ;  O  [P  the  difference  of 
latitude,  and  T'T,  the  departure.  Now,  by 
the  present  hypothesis,  the  departure  T'T  is 
equal  to  the  middle  parallel  of  latitude  between 
the  meridians  of  the  places  sailed  from  and  ar- 
rived at :  so  that  the  difference  of  longitude  of 
these  two  places  is  the  same  as  if  the  ship  had 
sailed  the  distance  T'T  on  the  middle  parallel 
of  latitude.  The  determination  of  the  differ- 
ence of  longitude  is,  therefore,  reduced  to  the  case  of  parallel 
sailing:  for,  T'-'T now  representing  the  distance  on  the  parallel, 
if  the  angle  T^TO"  be  made  equal  to  the  latitude  of  that  parallel, 
we  shall  have,  by  the  last  case,  the  difference  of  longitude  rep- 
resented by  the  hypothenuse  (yT.  We  therefore  have  the 
following  theorem : 

I.  In  the  triangle  C/TT      ^ 

COS.  a  TV     :     TT     ::     R     :     TO'; 
that  is, 

COS.  mid.  lat.     :     departure     :  :     R     :     diff.  longitude. 

II.  In  the  triangle  C/TO 

sin.  O'     :     OT     ::     sin  O     :     O'T ; 
that  is,  since  sin.  O^rcos.  CTT 

COS.  mid.  lat.     :     distance     :  :     sin.  course     :     diff.  longitude. 

III.  In  the  triangle  OTT^,  we  have 

R     :     tangent  O     :  :     OT     :     TT ; 
comparing  this  with  the  first  proportion,  and  observing  that  the 
extremes  of  this  are  the  means  of  that,  we  have 


O'T 


COS.  O'TT     :     tangt.  0; 


OT 
that  is, 

diff.  lat.     :     diff.  long.     :  :     cos.  mid.  lat.     :     tangt.  course. 

These  three  propositions  comprise  the  theory  of  middle  lati- 
tude sailing ;  and  when  to  the  middle  latitude  sailing,  the  proper 
correction,  taken  from  Mr.  Workman's  table,  is  applied,  these 
theorems  will  be  rendered  accurate. 

In  the  table  of  pages  93  and  94,  the  middle  latitude  is  to  be 
found  in  the  first  column  to  the  left.  Then,  along  in  the  hori- 
zontal line,  and  under  the  given  difference  of  latitude,  is  inserted 


PRINCIPLES    OF    NAVIGATION.  183 

the  proper  correction  to  be  added  to  the  middle  latitude  to  obtain 
the  latitude  in  which  the  meridian  distance  is  accurately  equal  to 
the  departure.  Thus,  if  the  middle  latitude  be  37°,  and  the  dif- 
ference of  latitude  18°,  the  correction  will  be  found  on  page  94, 
and  is  equal  to  0°  40^. 

EXAMPLES. 

1.  A  ship,  in  latitude  51°  18'  N.,  longitude  22°  6'  W.,  is 
Dound  to  a  place  in  the  S.  E.  quarter,  1024  miles  distant,  and 
in  lat.  37°  N. :  what  is  her  direct  course  and  distance,  as  also 
the  difference  of  longitude  between  the  two  places  ? 

T    *\         o^o    f\  AT*  (  Sum  of  latitudes     -     -     -  88°  18' 
Lat.  to      37__0  N.  S  jjy_  i^j_ 44°   9' 


Diff.  lat.     14M8  =858  miles. 


As  distance  1024 
radius  .... 
:  diff.  lat.  858  . 
COS.  course  33°  5^ 


3.010300 

10  000000 

2.933487 

9.923187 


Cos.  mid.  lat.  44°  9^  ar.  comp.  0.144167 
:  tang,  course  33'' 5  .  .  .  9.813899 
:  :  diff.  lat.  858  ...  .  2.933487 
:  diff  long.      779  ...     .     2.891552 


In  this  operation  the  middle  latitude  has  not  been  corrected, 
so  that  the  difference  of  longitude  here  determined  is  not  without 
error.  To  find  the  proper  correction,  look  for  the  given  middle 
latitude,  viz.  44°  9',  in  the  table  of  corrections,  the  nearest  to 
which  we  find  to  be  45° ;  against  this  and  under  14°  diff.  of  lat. 
we  find  27',  and  also  under  15°  we  find  31',  the  difference  be- 
tween the  two  being  4';  hence,  corresponding  to  14°  18'  the 
correction  will  be  about  28',  Hence,  the  corrected  middle  lati- 
tude is  44°  37',  therefore, 

Cos.  corrected  mid.  lat.  44°  37'  ar.  comp.  0.147629 
:  tangt.  course  33      5     -     -     -     l^-. 8 13899 

:  :  diff.  lat.  858     -     -     -     -     3.933487 

:  diff.  long.  785.3  -     -     -     -     2.895015 

therefore,  the  error  in  the  former  result  is  about  6  j  miles. 

2.  A  ship  sails  in  the  N.  W.  quarter,  248  miles,  till  her  de- 
parture is  135  miles,  and  her  difference  of  longitude  310  miles 
required  her  course,  the  latitude  left,  and  the  latitude  come  to. 

.        5  Course  N.  32°  59'  W  ; 
"^''•^-  I  Lat.  left  62°  27'  N. ;  lat.  in  65°  55'  N. 

3.  A  ship,  from  latitude  37°  N.,  longitude  9°  2'  W.,  having 
sailed  between  the  N.  and  W.,  1027  miles,  reckons  that  she  has 
made  564  miles  of  departure  :  what  was  her  direct  course,  and 
the  latitude  and  longitude  reached  ? 


.        5  Course  N.  33°  19'  W.,  or  N.  W.  nearly; 
^"'^-  }  Lat.  51°  18'  N. ;  long.  22°  8'  W 


184  ELEMENTS    OF    SURVEYING. 

4.  Required  the  course  and  distance  from  the  east  point  of 
St.  Michael's,  lat.  37°  48^  N.,  long.  25°  13^  W.,  to  the  Start 
Point,  lat.  50°  13^  N.,  long.  3°  S&  W. ;  the  middle  latitude  be- 
ing corrected  by  Workman's  tables. 

Ans.  Course  N.  57°  11'  E ;  dist.  1189  miles. 

Mercator's  Sailing. 

18.  It  has  already  been  observed,  that  when  a  ship  sails  on  an 
oblique  rhumb,  the  departure,  the  difference  of  latitude,  and  the 
distance  run,  are  truly  represented  by  the  sides  of  a  right  angled 
triangle. 

Thus,  if  a  ship  sails  from  A  to  i?,  the 
departure  B^B  w^ill  represent  the  sum  oi 
all  the  very  small  meridian  distances,  or 
elementary  departures,  b%  p'p,  &c. ;  the 
difference  of  latitude  AB^  vi^ill  represent, 
in  like  manner,  the  small  differences  of 
latitude  Ab'^  b'p',  &c ;  and  the  hypothe- 
nuse  AB,  will  express  the  sum  of  the 
distances  corresponding  to  these  several 
differences  of  latitude  and  departure. 
Each  of  these  elements  is  supposed  to 
be  taken  so  small,  as  to  form  on  the  sur- 
face of  the  sphere  a  series  of  triangles,  differing  insensibly  from 
plane  triangles. 

Let  Ab^b  represent  one  of  these  elementary  triangles  ;  b^b  will 
then  be  one  of  the  elements  of  departure ;  and  Ab'  the  corres- 
ponding difference  of  latitude.  Now,  as  b^b  is  a  small  arc  of  a 
parallel  of  latitude,  it  will  be  to  a  portion  of  the  equator  or  of  a 
meridian  containing  an  equal  number  of  degrees,  as  the  cosine 
of  its  latitude  is  to  radius  (Art.  16).  This  similar  portion  of 
the  equator,  or  of  the  meridian,  will  be  the  difference  of  longi- 
tude between  6^  and  b. 

Let  us  now  suppose  Ab  to  be  prolonged  until  the  perpendicular 
p^p  shall  become  equal  to  the  difference  of  longitude  between  b" 
and  b:  then, 
bb^  will  be  to  p^p,  as  the  cosine  of  the  latitude  of  b%  to  radius. 

But,  b'b     :    p'p     :  :     Ab'     :     Ap' : 

hence,    Ab'     :     Ap'     :  :     cos.  lat.  of  b'b     :     radius ; 

that  is,  if  the  latitude  be  so  increased  that  p'p  shall  become  the 
true  difference  of  longitude^  then, 

true  diff.  lat.      Ab'  :  increased  lat.      Ap'  :  :  cos.  lat.  :  radius. 

The  increased  latitude  Ap'  is  called  the  meridional  difference 
of  latitude.     Denoting,  therefore,  the  true  difference  of  latitude 


PRINCIPLES    OF    NAVIGATION.  185 

by  d^  the  increased  or  meridional  difference  of  latitude  by  D,  the 
latitude  of  h'h  by  Z,  and  the  radius  by  1,  which  is,  indeed,  the 
radius  of  the  tables  of  natural  sines,  and  we  shall  have 

d     '     D     :  :     cos.  I     :     1, 
which  gives 

D=d  secant  /,  since  L=sec.  l. 

COS.  / 

If  then,  we  know  the  latitude  I  of  the  beginning  of  a  course, 
and  the  true  difference  of  latitude  d  of  the  extremity  of  the 
course,  we  can  easily  find  the  meridional  latitude  D  correspond- 
ing to  that  course. 

Conceiving  each  elementary  distance  to  be  increased  in  this 
manner,  giving  the  meridional  differences  of  latitude  on  the  line 
AC^,  the  sum  of  all  the  corresponding  elements  will  be  the  entire 
meridional  departure  during  the  course. 

To  represent,  therefore,  the  difference  of  longitude  due  to  any 
departure,  as  B  B,  and  to  its  corresponding  difference  of  latitude 
AB^,  we  must  produce  AB' lill  AC  is  equal  to  the  meridional 
difference  of  latitude ;  the  perpendicular  C^C  will  then  be  the 
difference  of  longitude  actually  made  in  sailing  from  A  to  B. 

The  determination  of  AC  requires  the  determination  of  all  its 
elementary  parts.  If  d  be  taken  equal  to  V,  we  shall  have  from 
the  equation  above 

D=y  sec  I.  or  D  —  sec.  Z, 

it  being  understood  that  I  expresses  minutes  or  geographical  miles. 

From  ibis  equation,  the  value  of  D,  corresponding  to  every 
minute  of  /,  from  the  equator  to  the  pole,  may  be  calculated ; 
and  from  the  continued  addition  of  these  there  may  be  obtained, 
in  succession,  the  meridional  parts  corresponding  to  V,  2^,  3^,  4^ 
&c.  of  true  latitude,  and  when  registered  in  a  table,  they  form  a 
table  of  meridional  parts,  given  in  all  books  on  Navigation. 

The  following  may  serve  as  a  specimen  of  the  manner  in 
which  such  a  table  may  be  constructed,  and,  indeed,  of  the  man 
ner  in  which  the  first  table  of  meridional   parts  was   actually 
formed  by  Mr.  Wright,  the  proposer  of  this  valuable  method. 

Mer.  pts.  of  l^=:nat.  sec.  V. 

Mer.  pts.  of  2^=:nat.  sec.  T+nat.  sec.  2\ 

Mer.  pts.  of  3^==nat.  sec.  T  +  nat.  sec.  2^  +  nat.  sec.  3^ 

Mer.  pts.  of  4^=:nat.  sec.  T  +  nat.  sec.  2''+nat.  sec.  3^  +&c. 

Hence,  by  means  of  a  table  of  natural  secants  we  have 

Nat.  Sees.  Mer.  Pts. 

Mer.  pts.  of  V=  1.000000  =1.0000000 

Mer.  pts.  of  2^=1.0000000+1.0000000  =  2.0000002 
Mer.  pts.  of  3^=2.00000024-1.0000004  =  3.0000006 
Mer.  pts.  of  4"= 3.0000006+ 1.0000007=4.0000013    &c. 


186 


ELEMENTS    OF    SURVEYING. 


There  are  other  methods  of  construction,  but  this  is  the  most 
simple  and  obvious.  The  meridional  parts  thus  determined,  are 
all  expressed  in  geographical  miles,  because  in  the  general  ex- 
pression 

D=l'  sec.  I. 
r  is  a  geographical  mile. 

Having  thus  formed  the  table  of  meridional  parts,  if  we  enter 
it,  and  find  the  meridional  parts  corresponding  to  the  latitudes  of 
the  place  left  and  the  place  arrived  at,  their  difference  will  be 
the  meridional  difference  of  latitude,  or  the  line  AC^  in  the  dia 
gram.  The  difference  of  longitude  CC  may  then  be  found  by 
the  following  proportion. 

I.  As  radius  is  to  the  tangent  of  the  course,  so  is  the  meridional 
difference  of  latitude  to  the  difference  of  longitude. 

But  if  the  departure  be  given  instead  of  the  course,  then, 

II.  As  the  true  difference  of  latitude,  is  to  the  departure,  so  is  the 
meridional  difference  of  latitude  to  the  tangent  of  the  course. 

Other  proportions  may  also  be  deduced  from  the  diagram. 


EXAMPLES. 


As  an  example  of  Mercator's  or  rather  Wright's,  sailing,  let  us 
take  the  following: 

1.  Required  the  course  and  distance  from  the  east  point  of 
St.  Michael's  to  the  Start  point :  the  latitudes  being  37°  48'  N., 
and  50°  13'  N.,  and  the  longitudes  25°  13'  W.,  and  3°  38'  W. 

Start  Point,      lat.  50°  13'  N.         Mer.  pts.    3495 
St.  Michael's,  lat.  37°  48'  N. 


True  difference  of  lat.  12°  25' 
60 

Diff.  in  miles  745 


Mer.  pts.    2453 
Mer.  diff.   1042 

Diff.  oflongT~2l°  35' 
60 
Diff.  in  miles     1 295 


Now,  let  us  suppose  that  we  have  sailed 
from  Ato  B:  we  shall  then  know  A5' equal 
true  diff.  lat.  =  745  miles;  J. C^  =  merid- 
ional diff.  of  lat.=rl042;  and  C'C=  the 
difference  of  longitude  equal  to  1295 
miles.  It  is  required  to  find  the  course 
B^ABy  and  the  distance  AB. 


PRINCIPLES    OF    NAVIGATION.  187 

For  the  Course.  >  For  the  Distance. 


As  AC      1042     .     .       3.017868 

radius 10.000000 

;   C'C       1295     .     .       3.112270 


^  510  11'  E.      10.094402 


As  COS.  A.  51°  11'        9.797150 
:  AB'  745  .     .     2.872156 

:  :  radius  ....  10.000000 


AB  1189      .     3.075006 

2.  A  ship  sails  from  latitude  37°  N.  longitude  22°  56'  W.,  on 
the  course  N:  33°  19'  E:  till  she  arrives  at  51°  18'  N.:  required 
the  distance  sailed,  and  the  longitude  arrived  at. 

Ans.  Dis.  1027  miles;  long.  9°  45'  W. 


Mercator's  Chart. 


Mercator's  Chart  is  a  Map  constructed  for  the  use  of  Navi- 
gators. In  this  chart  all  the  meridians  are  represented  by  straight 
lines  drawn  parallel  to  each  other,  and  the  parallels  of  latitude 
are  also  represented  by  parallel  straight  lines  drav^^n  at  right 
angles  to  the  meridians. 

The  chart  may  be  thus  constructed.  Draw  on  the  lower  part 
of  the  paper  a  horizontal  line  to  represent  the  parallel  of  latitude 
which  is  to  bound  the  southern  portion  of  the  chart.  From  a 
scale  of  equal  parts,  corresponding  in  size  to  the  extent  of  the 
map  to  be  made,  lay  off,  on  this  line,  any  number  of  equal  dis- 
tances and  throiigh  the  points  draw  a  series  of  parallels  to  rep- 
resent the  meridians. 

Then  draw  a  line  on  the  side  of  the  map,  and  for  the  second 
parallel  of  latitude,  find  from  the  table  of  meridional  parts  the 
meridional  difference  of  latitude  corresponding  to  the  degrees 
between  the  first  and  second  parallel,  and  lay  off  this  distance 
for  the  interval  between  the  two  parallels.  Then  find  the  meri- 
dional difference  between  the  second  and  third,  and  lay  it  off  in 
the  same  way  for  the  third  parallel,  and  so  on,  for  the  fourth, 
fifth,  &c. 

A  place  whose  latitude  and  longitude  is  known,  may  be  laid 
down  in  the  same  manner;  for  it  will  always  be  determined  by 
the  intersection  of  the  meridian  and  parallel  of  latitude. 

If  the  chart  is  constructed  on  a  small  scale  the  divisions  on 
the  graduated  lines,  may  be  degrees  instead  of  minutes ;  and 
the  meridians  and  parallels  may  be  drawn  only  for  every  fifth 
or  tenth  degree. 

We  have  already  seen  (Art.  18.),  that  the  meridional  difference 
of  latitude  bears  a  constant  ratio  to  the  difference  of  longitude, 
so  long  as  the  course  remains  unchanged :  and  hence  we  see 
that  on  Mercator's  chart,  every  rhumb  will  be  represented  by  a 
straight  line. 


*®°  ELEMENTS    OF    SURVEYING. 

Line  of  Meridional  Parts  on  Gunter's  Scale. 

This  scale  corresponds  exactly  with  the  table  of  meridional 
parts,  excepting,  that  in  the  table  the  circle  is  divided  to  minutes, 
while  the  scale  is  divided  only  to  degrees.  A  scale  of  equal  parts 
is  placed  directly  beneath  the  scale  of  meridional  parts  ;  if  the 
former  corresponds  to  divisions  of  longitude,  the  latter  will  rep- 
resent those  of  latitude.  Hence,  a  chart  may  be  constructed 
trom  these  scales  by  using  the  scale  of  equal  parts  for  the  lines 
01  longitude,  and   the  scale  of  meridional  parts   for  those  of 


THE   END. 


A  TABLE 

OF 

LOGARITHMS    OF    NUMBERS 

FROM     1    TO     10,000. 


?L 

Log. 
0.000000 

N. 
26 

Log. 

N. 
51 

Lo?. 
1.707570 

N. 
76 

Lo?. 
1.880814 

1.414973 

2 

0.301030 

27 

1.431364 

52 

1.716003 

77 

1.886491 

3 

0.477121 

28 

1.447158 

53 

1.724276 

78 

1.892095 

4 

0.602060 

29 

1.462398 

54 

1.732394 

79 

1.897627 

5 

0.698970 

30 

1.477121 

55 

1.740363 

80 

1.903090 

6 

0.778151 

31 

1.491362 

56 

1.748188 

81 

1.908485 

7 

0.845098 

32 

1.505150 

57 

1.755875 

82 

1.913814 

8 

0.903090 

33 

1.518514 

58 

1.763428 

83 

1.919078 

9 

0.954243 

34 

1.531479 

59 

1.770852 

84 

1.924279 

10 

1.000000 

35 

1.544068 

60 

1.778151 

85 

1.929419 

li 

1.041393 

36 

1.556303 

61 

1.785330 

86 

1.934498 

12 

1.079181 

37 

1.568202 

62 

1.792392 

87 

1.939519 

13 

1.113943 

38 

1.579784 

63 

1.799341 

88 

1.944483 

14 

1.146128 

39 

1.691065 

64 

1.806180 

89 

1.949390 

15 

1.176091 

40 

1.602060 

65 

1.812913 

90 

i. 954243 

16 

1.204120 

41 

1.612784 

66 

1.819544 

91 

1.959041 

17 

1.230449 

42 

1.623249 

67 

1.826075 

92 

1.963788 

18 

1.255273 

43 

1.633468 

68 

1.832509 

93 

1.968483 

19 

1.278754 

44 

1.643453 

69 

1.838849 

94 

1.973128 

20 

1.301030 

45 

1.653213 

70 

1.845098 

95 

1.977724 

21 

1.322219 

46 

1.662758 

71 

1.851258 

96 

1.982271 

22 

1.342423 

47 

1.672098 

72 

1.857333 

97 

1.986772 

23 

1.361728 

48 

1.681241 

73 

1.863323 

98 

1.991226 

24 

1.380211 

49 

1.690196 

74 

1.869232 

99 

1.995635 

UL 

1.397940 

50 

1  1.698970 

75 

1.875061 

100 

2.000000 

N.  B.  In  the  following  table,  in  the  last  nine  columns  of 
each  page,  where  the  first  or  leading  figures  change  from  9's 
to  O's,  points  or  dots  are  introduced  instead  of  the  O's  through 
the  rest  of  the  line,  to  catch  the  eye,  and  to  indicate  that  from 
thence  the  annexed  first  two  figures  of  the  Logarithm  in  the 
second  column  stand  in  the  next  lower  line. 


A  Table  of  logarithms  from  1  to  10,000. 


N.  1   0   |x|2,u|4i5i6|7i8|9 

_D.  > 

100 

000000 

U434 

0868 

i30l 

1734  2166 

2598 

3029 

3461 

3S91 

"432" 

101 

4321 

4751 

5181 

.5609 

6038 

6466 

6894 

7321 

7748 

8174 

428 

102 

8600 

9026 

945  J 

9876 

.300 

.724 

1147 

1570 

1993 

2415 

424 

103 

012837 

3259 
7451 

3680 

4100 

4521 

4940 

5360 

5779 

6197 

6616 

419 

104 

7033 

7868 

8284 

8700 

9116 

9532 

9947 

.361 

.775 

416 

105 

021189 

1603 

2016 

2428 

2841 

3252 

3664 

4075 

4486 

4896 

412 

106 

5306 

5715 

6125 

6.533 

6942 

7350 

7757 

8164 

8571 

8978 

408 

107 

9384 

9789 

.195 

.600 

1004 

1408 

1812 

2216 

2619 

3021 

404 

108 

033424 

3826 

4227 

4628 

.5029 

5430 

5830 

6230 

6629 

7028 

400 

109 
110 

7426 

7825 

8223 
2182 

8620 
2576 

90171 9414 

9811 
3755 

.207 
4148 

.602 

.998 

396 
393 

041393 

1787 

2969 

3362 

4540' 

4932 

111 

5323 

5714 

6105 

6495 

6885 

7275 

7664 

8053 

8442 

8830 

389 

112 

9218 

9606 

9993 

.380 

.766 

1153 

1538 

1924 

2309 

2694 

386 

113 

053078 

3463 

3846 

4230 

4613 

4996 

,5378 

5760 

6142 

6524 

382 

114 

6905 

7286 

7666 

8046 

8426 

8805 

9185 

9563 

9942 

.320 

379 

115 

000698 

1075 

1452 

1829 

2206 

2582 

29.58 

3333 

3709 

4083 

376 

116 

4458 

4832 

5206 

5580 

5953 

6326 

6699 

7071 

7443 

7815 

372 

117 

8186 

8557 

8928 

9298 

9668 

...38 

.407 

.776 

1145 

1514 

369 

118 

071882 

2250 

2617 

2985 

3352 

3718 

4085 

4451 

4816 

5182 

366 

119 
120 

5547 

5912 
9543 

6276 
9904 

6640 
.266 

7004 
.626 

7368 
.987 

7731 
1347 

8094 
1707 

8457 

8819 

363 
360 

079181 

2067 

2426 

121 

082785 

3144 

3503 

3861 

4219 

4576 

4934 

5291 

5647 

6004 

357 

122 

6360 

6716 

7071 

7426 

7781 

8136 

8490 

8845 

9198 

9552 

355 

123 

9905 

.258 

.611 

.963 

1315 

1667 

2018 

2370 

2721 

3071 

351 

124 

093422 

3772 

4122 

4471 

4820 

5169 

.5518 

5866 

6215 

6562 

349 

125 

6910 

7257 

7604 

7951 

8298 

8644 

8990 

9335 

9681 

..26 

3^6 

126 

100371 

0715 

1059 

1403 

1747 

2091 

2434 

2777 

3119 

3462 

343 

127 

3804 

4146 

4487 

4828 

5169 

5510 

5851 

6191 

6.531 

6871 

340 

128 

7210 

7549 

7888 

8227 

8565 

8903 

9241 

9579 

9916 

.2.53 

338 

129 
130 

110590 

0926 
4277 

1263 
4611 

1.599 
4944 

1934 

5278 

2270 
5611 

2605 
5943 

2940 
6276 

3275 

3609 
6940 

335 
333 

113943 

6608 

131 

7271 

7603 

7934 

8265 

8595 

8926 

9256 

9586 

9915 

.245 

330 

132 

120574 

0903 

1231 

1.560 

1888 

2216 

2544 

2871 

3198 

3525 

328 

133 

3852 

4178 

4504 

4830 

5156 

.5481 

5806 

6131 

6456 

6781 

325 

134 

7105 

7429 

7753 

8076 

8399 

8722 

9045 

9368 

9690 

..12 

323 

135 

130334 

0655 

0977 

1298 

1619 

1939 

2260 

2580 

2900 

3219 

321 

136 

3539 

3858 

4177 

4-196 

4814 

5133 

5451 

5769 

6086 

6403 

318 

137 

6721 

7037 

7354 

7671 

7987 

8303 

8618 

8934 

9249 

9564 

315 

138 

9879 

.194 

.508 

.822 

1136 

1450 

1763 

2076 

2389 

2702 

314 

139 
140 

143015 

3327 
6438 

3639 
6748 

3951 

7058 

4263 

4574 
7676 

4885 
7985 

5196 

.5507 
8603 

.5818 
8911 

311 
309 

146128 

7367 

8294 

141 

9219 

9527 

9835 

.142 

.449 

.756 

1063 

1370 

1676 

1982 

307 

142 

152288 

2594 

2900 

3205 

3510 

3815 

4120 

4424 

4728 

5032 

305 

143 

5336 

5640 

5943 

6246 

6.549 

6852 

71.54 

7457 

7759 

8061 

303 

144 

8362 

8664 

8965 

9266 

9567 

9868 

.168 

.469 

.769 

1068 

301 

145 

161368 

1667 

1967 

2266 

2564 

2863 

3161 

3460 

3758 

4055 

299 

146 

4353 

4650 

4947 

5244 

5541 

5838 

6134 

6430 

6726 

7022 

297 

147 

7317 

7613 

7908 

8203 

8497 

8792 

9086 

9380 

9674 

9968 

295 

148 

170262 

0555 

0848 

1141 

1434 

1726 

2019 

2311 

2603 

2895 

293 

149 
150 

3186 

3478 
6381 

3769 
6670 

4060 
6959 

4351 

4641 

4932 

5222 
8113 

.5512 
8401 

5802 
8689 

291 

289 

176091 

7248 

7536 

7825 

151 

8977 

9264 

9552 

9839 

.126 

.413 

.699 

.985 

1272 

1,5,58 

287 

152 

181844 

2129 

2415 

2700 

2985 

3270 

3555 

.3839 

4123 

4407 

285 

153 

4691 

4975 

5259 

5542 

5825 

6108 

6391 

6674 

6956 

7239 

283 

154 

7521 

7803 

8084 

8366 

8647 

8928 

9209 

9490 

9771 

..51 

281 

155 

190332 

0612 

0892 

1171 

1451 

1730 

2010 

2289 

2567 

2846 

279 

156 

3125 

3403 

3681 

3959 

4237 

4514 

4792 

5069 

5346 

5623 

278 

157 

5899 

6176 

6453 

6729 

7005 

7281 

7556 

7832 

8107 

8382 

276 

153 

8657 

8932 

9206 

9481 

9755 

..29 

.303 

.577 

,850 

1124 

1274 

159 

201397 

1670 

1943 

2216 

2488 

2761 

3033 

3305 

3577 

33481272  1 

N.  1   0   |l|2|3|4|5|6|7|8|9|D.  1 

A 

FABLE  OF  LOGARrrllSi 

S  FROM  1  TO  10,000 

3 

N.  I   0   1  1   1  2  1  3  1  4  1  5  1  6  1  7  1  8  1  9  I  r».  1 

IfiO 

204120  43911 

4663 

4934 

5204 

5475 

5740 

0010 

6236 

0556 

271 

161 

6826 

7096 

7365 

7634 

7904 

8173 

8441 

8710 

8979 

9247 

269 

102 

9515 

9783 

..51 

.319 

.586 

.853 

1121 

1388 

1654 

1921 

20? 

163 

212188 

2454 

2720 

2986 

3252 

3518 

3783 

4049 

4314 

4579 

266 

104 

4844 

5109 

5373 

5638 

5902 

6166 

0430 

0694 

6957 

7221 

264 

165 

7484 

7747 

8010 

8273 

8536 

8798 

9000 

9323 

9585 

9840 

262 

166 

220108 

0370 

0631 

0892 

1153 

1414 

1075 

1936 

2196 

2450 

261 

107 

2716 

2976 

3236 

3496 

3755 

4015 

4274 

4533 

4792 

5051 

259 

168 

5309 

5568 

5826 

6084 

0342 

6600 

0858 

7115 

7372  7630 

258 

169 
170 

7887 

8144 
0704 

8400 
0960 

8657 
1215 

8913 
1470 

9170 

1724 

9420 
1979 

9682 
2234 

9938 

2488 

.193 

2742 

256 

254 

230449 

171 

2996 

3250 

3504 

3757 

4011 

4264 

4517 

4770 

6023 

5270 

253 

172 

5528 

5781 

6033 

6285 

6537 

6789 

7041 

7292 

75-14 

7795 

252 

173 

8046 

8297 

8548 

8799 

9049 

9299 

95.50 

9800 

..50 

.300 

250 

174 

240549 

0799 

1048 

1297 

1546 

1795 

2044 

2293 

2541 

2790 

249 

175 

3038 

3286 

3534 

3782 

4030 

4277 

4525 

4772 

.5019 

.5206 

248 

176 

5513 

5759 

6006 

6252 

6499 

6745 

0991 

7237 

7482 

7728 

246 

177 

7973 

8219 

8464 

8709 

8954 

9198 

9443 

9087 

9932 

.176 

245 

178 

250420 

0664 

0908 

1151 

1395 

1638 

1881 

2125 

2368 

2010 

243 

179 

180 

2853 

3096 
5514 

3338 i  3580 

3822 
6237 

4064 
0477 

4300 
0718 

4548 
0958 

4790 
7198 

5031 
7439 

242 

241 

255273 

5755 

.5996 

181 

7679 

7918 

8158 

8398 

8637 

8877 

9110 

9355 

9594 

9833 

239 

182 

260071 

0310 

0548 

0787 

1025 

1203 

1501 

1739 

1976 

2214 

238 

183 

2451 

2688 

2925 

3162 

3399 

3636 

3873 

4109 

4346 

4.582 

237 

184 

4818 

5054 

5290 

5525 

5761 

5996 

0232 

6467 

6702 

6937 

235 

185 

7172 

7406 

7641 

7875 

8110 

8344 

8578 

8812 

9040 

9279  2341 

186 

9513 

9746 

9980 

.213 

.446 

.679 

.912 

1144 

1377 

1609 

233 

187 

271842 

2074 

2306 

2538 

2770 

3001 

3233 

3464 

3090 

3927 

232 

188 

4158 

4389 

4620 

4850 

5081 

5311 

5542 

5772 

6002 

6232 

230 

189 
190 

6462 

6692 

8982 

6921 
92  if 

7151 
9439 

7380 
9667 

7009 
9895 

7838 
.123 

8007 
.351 

8290 
.578 

8525 
.806 

229 

228 

278754 

191 

281033 

1261 

1488 

1715 

1942 

2169 

2390 

2622 

2849 

3075 

227 

192 

3301 

3527 

3753 

3979 

4205 

4431 

4056 

4882 

5107 

5332 

226 

193 

5557 

5782 

6007 

6232 

6456 

6681 

6905 

7130 

7354 

7578 

225 

194 

7802 

8026 

8249 

8473 

8696 

8920 

9143 

9366 

958y 

9812 

223 

195 

290035 

0257 

0480 

0702 

0925 

1147 

1369 

1591 

1813 

2034 

222 

196 

2256 

2478 

269^ 

2920 

3141 

3303 

3584 

3804 

4025 

4246 

221 

197 

4466 

4687 

4907 

5127 

5347 

5507 

5787 

6007 

6226 

6446 

220 

198 

6065 

6884 

7104 

7323 

7542 

7701 

7979 

8198 

8416 

8635 

219 

199 
200 

8853 

9071 
1247 

9289 
1464 

9507 
1681 

9725 
1898 

9943 
2114 

.161 
2331 

.378 

2547 

.595 

2764 

.813 
2980 

218 
217 

301030 

201 

3196 

3412 

3628 

3844 

4059 

4275 

4491 

4706 

4921 

5136 

216 

202 

5351 

5566 

5781 

.5996 

6211 

0425 

6639 

6854 

7068 

7282 

215 

203 

7496 

7710 

7924 

8137 

8351 

8504 

8778 

8991 

9204 

9417 

213 

204 

9630 

9843 

..56 

.268 

.481 

.693 

.906 

1118 

1330 

1542 

212 

205 

311754 

1966 

2177 

2389 

2600 

2812 

3023 

3234 

3445 

3656 

211 

206 

3867 

4078 

4289 

4499 

4710 

4920 

5130 

5340 

5.551 

5760 

210 

207 

5970 

6180 

6390 

6599 

6809 

7018 

7227 

7430 

7646 

7854 

209 

208 

8063 

8272 

8481 

8689 

8898 

9100 

9314 

9522 

9730 

9938 

208 

209 
210 

320146 

0354 
2426 

0562 
2633 

0769 
2839 

0977 
3046 

1184 
.3252 

1391 
3458 

1598 
3005 

1805 
3871 

2012 
4077 

207 
206 

322219 

211 

4282 

4488 

4694 

4899 

5105 

5310 

5516 

5721 

5926 

6131 

205 

212 

6336 

6541 

6745 

6950 

7155 

7359 

7503 

7767 

7972 

8176 

204 

213 

8380 

8583 

8787 

8991 

9194 

9398 

9001 

9805 

...8 

.211 

203 

214 

330414 

0617 

0819 

1022 

1225 

1427 

1630 

1832 

2034 

2236 

202 

215 

2438 

2640 

2842 

3044 

3246 

3447 

3049 

3850 

4051 

4253 

202 

216 

4454 

4655 

4856 

5057 

5257 

5458 

5058 

5859 

0059 

6260 

201 

217 

6460 

06601 6860 

7060 

7260 

7459 

7059 

7858 

8058 

8257 

200 

218 

8456;  86561  885>5 

9054 

9253 

9451 

9650 

9849 

..47 

.246 

199 

219 

340444 

'  0642 

'0841 

1039 

1237 

'  1435 

1032 

1830 

2028 

2225 

198 

__L    I     2     I     3     I     4     I     5     I     6 


Dj 


A  TABLE  OF  LOGARITHMS  PROJl   1  TO   10,000. 


N.  1   0   1  1  f  2  1  3  1  4  1  5  1  6  1  7  1  8  1  9  i  D.  1 

220 

342423,  2620 

2817 

3014 

.3212 

3409 

3606  3802 

1  3999:41961  1971 

221 

4392 

4589 

4785 

4981 

5178 

5374 

5570 

15766 

5962 

'  6167 

196 

222 

6353 

16549 

6744 

6939 

7135 

7330 

7525 

7720 

7915 

8110 

195 

223 

8305 

:  8500 

8694 

8889 

9083 

9278 

9472 

1  9666 

9860 

...64 

194 

224 

350248 

04-12 

0636 

0829 

\   1023 

1216 

1410 

1  1603 

1796 

1989 

193 

225 

2183 

1  2375 

2568 

2761 

!  2954 

3147 

3339 

3532 

3724 

3916 

193 

226 

4108 

4301 

4493 

4685 

i4876 

5068 

5260 

;  .5452 

5643 

5834 

192 

227 

6026 

6217 

6408 

6599 

6790 

6981 

7172 

1  7363 

7554 

7744 

19] 

228 

7935 

8125 

8316 

8506 

8096 

8886 

9076 

9266 

9456 

9646 

190 

229 
230 

9835 

..25 

1917 

.215 
2105 

.404 
2294 

.593 

2482 

.783 
2671 

.972 
2859 

I  1161 
3048 

1350 
3236 

1539 
3424 

189 

188 

361728 

231 

3612 

3800 

3988 

4176 

4363 

4551 

4739 

4926 

5113 

5301 

188 

232 

5488 

5675 

5862 

6049 

6236 

6423 

6610 

6796 

6983 

7169 

187 

233 

7356 

7542 

7729 

7915 

8101 

8287 

8473 

8659 

8845 

9030 

186 

234 

9216 

9401 

9587 

9772 

9958 

.143 

.328 

.513 

.698 

.883 

185 

235 

371068 

1253 

1437 

1622 

1806 

1991 

2175 

2360 

2544 

2728 

184 

236 

2912 

3096 

3280 

3464 

3047 

3831 

4015 

4198 

4382 

45G5 

184 

237 

4748 

4932 

5115 

5293 

5481 

5664 

5846 

6029 

6212 

6394 

183 

238 

6577 

6759 

6942 

7124 

7306 

7488 

7670 

7852 

8034 

8216 

182 

239 
240 

8398 

8580 
0392 

8761 
0573 

8943 
0754 

9124 
0934 

9306 
1115 

9487 
1296 

9668 
1476 

9849 
1656 

..30 

1837 

181 
181 

380211 

241 

2017 

2197 

2377 

2557 

2737 

2917 

3097 

3277 

3456 

3636 

180 

242 

3815 

3995 

4174 

4353 

4533 

4712 

4891 

5070 

5249 

5428 

179 

243 

5606 

5785 

5964 

6142 

6321 

6499 

6677 

6856 

7034 

7212 

178 

244 

7390 

7568 

7746 

7923 

8101 

8279 

8456 

8634 

8811 

8989 

178 

245 

9166 

9343 

9520 

9698 

9875 

..51 

.228 

.405 

.582 

.759 

177 

246 

390935 

1112 

1288 

1464 

1641 

1817 

1993 

2160 

2345 

2.521 

176 

247 

2697 

2873 

3048 

3224 

3400 

3575 

3751 

3926 

4101 

4277 

176 

248 

4452 

4627 

4802 

4977 

5152 

5326 

6501 

5676 

5850 

6025 

175 

249 

6199 

6374 

6548 

6722 

6896 

7071 

7245 

7419 

7592 

7766 

174 

250 

397940 

8114 

8287 

8461 

8634 

8808 

8981 

91.54 

9328 

9501 

173 

251 

9674 

9847 

..20 

.192 

.365 

.538 

.711 

.883 

1056 

1228 

173 

252 

401401 

1573 

1745 

1917 

2089 

2261 

2433 

2605 

2777 

2949 

172 

253 

3121 

3292 

3464 

3635 

3807 

3978 

4149 

4320 

4492 

4663 

171 

254 

4834 

5005 

5176 

5346 

55.7 

5688 

5858 

6029 

6199 

6370 

171 

255 

6540 

6710 

6881 

7051 

7221 

7391 

7561 

7731 

7901 

8070 

170 

256 

8240 

8410 

8579 

8749 

8918 

9087 

9257 

9426 

9595 

9764 

169 

257 

9933 

.102 

.271 

.440 

.609 

.777 

.946 

1114 

1283 

1451 

169 

258 

411620 

1788 

1956 

2124 

2293 

2461 

2629 

2796 

2964 

3132 

168 

259 

3300 

3467 

3635 

3803 

3970 

4137 

4305 

4472 

4639 

4306 

167 

260 

414973 

5140 

5307 

5474 

5641 

6808 

5974 

6141 

6303 

6474 

167 

261 

6641 

6807 

6973 

7139 

7306 

7472 

7633 

7804 

7970 

81.35 

166 

262 

8301 

8467 

8633 

8798 

8964 

9129 

9295 

9460 

9625 

9791 

165 

263 

9956 

.121 

.286 

.451 

.616 

.781 

.945 

1110 

1275 

1439 

165 

264 

421604 

1788 

1933 

2097 

2261 

2426 

2590 

2754 

2918 

3082 

164 

265 

3246 

3410 

3574 

3737 

3901 

4065 

4228 

4392 

4555 

4718 

164 

266 

4882 

5045 

5208 

5371 

5534 

5697 

5860 

6023 

6186 

6349 

163 

267 

6511 

6674 

6S36 

6999 

716] 

7324 

7486 

7648 

7811 

7973 

162 

268 

8135 

8297 

8459 

8821 

8783 

8944 

9108 

9268 

9429 

9591 

162 

269 

9752 

9914 

..75 

.236 

.398 

.559 

.720 

.881 

1042 

1203 

161 

270 

431364 

1525 

1685 

1846 

2007 

2167 

2328 

2488 

2049 

2809 

161 

271 

2969 

3130 

3290 

3450 

3610 

3770 

3930 

4090 

4249 

4409 

160 

272 

4569 

4729 

4888 

5048 

5207 

5367 

5526 

5685. 

5344 

6004 

159 

273 

6163 

6322 

6481 

6640 

6798 

6957 

7116,7275' 

7433 

7592 

159 

274 

7751 

7909 

8067 

8226 

8384! 

8542 

8701  88591 

90  J  7 

9175 

158 

275 

9333 

94911 

9648 

9806 

99641 

.1221 

.279j  .4371 

..594 

.752 

158 

276 

440909 

lOfiO 

1224 

1381. 

1538' 

1695' 

18.52  2009! 

2106 

2323 

157 

277 

24S0 

?637 

2793 

2950 

3106; 

3263 

3119135761 

3732' 

3889 

157 

278 

4045 

4201 

43571 

4513 

4669  4825 

4981  51371 

5293 

5449 

156 

279 

6604 

5760  59151 

6071' 62261 6382  6537  6692  6848' 

7003  155  1 

N.  1   0   1  1   1  2  i  3  1  4  1  5  1  6  1  7  1  8  i  9  :  D.  1 

A  TABLE  OF  LOGARITHMS  FROM   1   TO   10,000. 


N. 

}   0   |l|2|3i4|5|6|7!8|9lD.  1 

tso" 

447158 

7313 

7468 

7623 

7778 

7933 

8088 

8242i  8397i  8552|  155  I 

281 

8706 

8861 

9015 

9170 

9324 

9478 

9633 

9787 

9941 ;  ..95 

154 

282 

450249 

0403 

0557 

0711 

0865 

1018 

1172 

1326 

1479 

1633 

154 

283 

1786 

1940 

2093 

2247 

2400 

2553 

2700 

2859 

3012 

3165 

153 

284 

3318 

3471 

3624 

3777 

3930 

4082 

4235 

4387 

4540 

4692 

153 

285 

4845 

4997 

5150 

5302 

5454 

5606 

5758 

5910 

6062 

6214 

152 

286 

6366 

6518 

6670 

6821 

6973 

7125 

7276 

7428 

7579 

7731 

152 

287 

7882 

8033 

8184 

8336 

8487 

8638 

8789 

8940 

9091 

9242 

151 

288 

9392 

9543 

9694 

9845 

9995 

.146 

.296 

.447 

.597 

.748 

151 

289 

460898 

1048 

1198 

1348 

1499 

1649 

1799 

1948 

2098 

2248 

150 

290 

462398 

2548 

2697 

2847 

2997 

3146 

3296 

3445 

3594 

3744 

150 

291 

3893 

4042 

4191 

4340 

4490 

4639 

4788 

4936 

5085 

5234 

149 

292 

5383 

5532 

5680 

5829 

5977 

6126 

6274 

6423 

6571 

6719 

149 

293 

6868 

7016 

7164 

7312 

7460 

7608 

7756 

7904 

8052 

8200 

148 

294 

8347 

8495 

8643 

8790 

8938 

9085 

9233 

9380 

9527 

9675 

148 

295 

9822 

9969 

.116 

.263 

.410 

.55/ 

.704 

.851 

.998 

1145 

147 

296 

471292 

1438 

1585 

1732 

1878 

2025 

2171 

2318 

2464 

2610 

146 

297 

2756 

2903 

3049 

3195 

3341 

3487 

3633 

3779 

3925 

4071 

146 

298 

4216 

4362 

4508 

4653 

4799 

4944 

5090 

5235 

5381 

5526 

146 

299 
300 

5671 

6816 

5962 
7411 

6107 
7555 

6252 
7700 

6397 

7844 

6542 
7989 

6687 
8133 

6832 

8278 

6976 

8422 

145 
145 

477121 

7266 

301 

8566 

8711 

8855 

8999 

9143 

9287 

9431 

9575 

9719 

9863 

144 

302 

480007 

0151 

0294 

0438 

0582 

0725 

0869 

1012 

1156 

1299 

144 

303 

1443 

1586 

1729 

1872 

2016 

2159 

2302 

2445 

2588 

2731 

143 

304 

2874 

3016 

3159 

3302 

3445 

3587 

3730 

3872 

4015 

4157 

143 

305 

4300 

4442 

4585 

4727 

4869 

5011 

5153 

5295 

5437 

5579 

■42 

306 

5721 

5863 

6005 

6147 

6289 

6430 

6572 

6714 

6855 

6997 

.42 

307 

7138 

7280 

7421 

7563 

7704 

7845 

7986 

8127 

8269 

8410 

141 

308 

8551 

8692 

8833 

8974 

9114 

9255 

9396 

9537 

9677 

9818 

141 

309 
310 

9958 
491362 

..99 
1502 

.239 
1642 

.380 

.520 
1922 

.661 
2062 

.801 
2201 

.941 
2341 

1081 
2481 

1222 
2621 

140 
140 

1782 

311 

2760 

2900 

3040 

3179 

3319 

3458 

3597 

3737 

.3876 

4015 

139 

312 

4155 

4294 

4433 

4572 

4711 

4850 

4989 

5128 

5267 

5406 

139 

313 

5544 

5683 

5822 

5960 

6099 

6238 

6376 

6515 

6653 

6791 

139 

314 

6930 

7068 

7206 

7344 

7483 

7621 

7759 

7897 

8035 

8173 

138 

315 

8311 

8448 

8586 

8724 

8862 

8999 

9137 

9275 

9412 

9550 

138 

316 

9687 

9824 

9962 

..99 

.236 

..3,4 

.511 

.648 

.785 

.922 

137 

317 

501059 

1196 

1333 

1470 

1607 

1744 

1880 

2017 

2154 

2291 

137 

318 

2427 

2564 

2700 

L»337 

2973 

3109 

3246 

3382 

3518 

3655 

1.36 

319 

3791 

3927 

4063 

4199 

4335 

4471 

4607 

4743 

4878 

5014 

136 

320 

505150 

5286 

5421 

5557 

5693 

5828 

5964 

6099 

6234 

6370 

136 

321 

6505 

6640 

6776 

6911 

7046 

7181 

7316 

7451 

7586 

7721 

135 

322 

7856 

7991 

8126 

8260 

8395 

8530 

8664 

8799 

8934 

9068 

135 

323 

9203 

9337 

9471 

9606 

9740 

9874 

...9 

.143 

.277 

.411 

134 

324 

510545 

0679 

0813 

0947 

1081 

1215 

1349 

1482 

1616 

1750 

134 

325 

1883 

2017 

2151 

2284 

2418 

2551 

2684 

2818 

2951 

3084 

133 

326 

3218 

3351 

3484 

3617 

3750 

3883 

4016 

4149 

4282 

4414 

133 

327 

4548 

4681 

4813 

4946 

5079 

5211 

5344 

5476 

5609 

5741 

133 

328 

5874 

6006 

6139 

6271 

6403 

6535 

6668 

6800 

6932 

7064 

13a 

329 

7196 

7328 

7460 

7592 

7724 

7855 

7987 

8119 

8251 

8382 

132 

330, 

■518514 

8646 

8777 

8909 

9040 

9171 

9303 

9434 

9566 

9697 

131 

331 

9828 

9959 

..90 

.221 

.353 

.484 

.615 

745 

.876 

1007 

131 

332 

521138 

1269 

1400 

1530 

1661 

1792 

1922 

2053 

2183 

2314 

131 

333 

2444 

2575 

2705 

2835 

2966 

3096 

3226 

3356 

3486 

3616 

130 

334 

3746 

3876 

4006 

4136 

4266 

4396 

4526 

4056 

4785 

4915 

130 

335 

5045 

5174 

5304 

5434 

5563 

5693 

5822 

5951 

6081 

6210 

129 

336 

6339 

6469 

6598 

6727 

6856 

6985 

7114 

7X'13 

7372 

7501 

129 

337 

7630 

7759 

7888 

8016 

'8145 

8274 

8402 

8531 

8660 

8788 

129 

338 

8917 

9045 

9174 

9302 

9430 

9559 

9687 

9315 

9943 

..72| 128 

339 

530200  0328 

0456 

05,94 

0712 

0840 

0968'  1096 

1223 

13511  128 

0 

1  ] 

1  2 

3 

4  i  5  1  6  1  7  I  8  1  9  1  V.   \ 

G 

A 

TABLE  OF  LGGARlTjrfMS  FKOM  1 

10  10,000 

. 

N-  1   0   1  1  1  2  1  3  1  4  1  5  1  6  1  7  1  8  1  9  1  1).  1 

340 

531479 

160/ 

1734 

1862 

1990 

2117 

2245 

2372 

2500 

2627 

128 

341 

2754 

2882 

3009 

3136 

3264 

3391 

.3518 

3645 

3772 

3899 

127 

342 

4026 

4153 

4280 

4407 

4534 

4661 

4787 

4914 

.5041 

5167 

127 

343 

5294 

5421 

5547 

5674 

5800 

5927 

60.53 

6180 

6306 

6432 

126 

344 

6558 

6685 

6811 

6937 

7063 

7189 

7315 

7441 

7567 

7693 

126 

346 

7819 

7945 

8071 

8197 

8322 

8448 

8574 

8699 

8825 

8951 

126 

346 

9076 

9202 

9327 

9452 

9578 

9703 

9829 

9954 

..79 

.204 

125 

34  V 

5'i0329 

0455 

0580 

0705 

0830 

0955 

1080 

1205 

1.3.30 

14.541  125 

348 

1579 

1704 

1829 

1953 

2078 

2203 

2327 

2452 

2576 

270l!  125 

349 

350 

2825 

2950 
4192 

3074 
4316 

3199 
4440 

3323 
4564 

3447 
4688 

3571 
4812 

3696 
4936 

3820 
5060 

394-4 
5183 

124 
124 

544068 

351 

5307 

5431 

5555 

5678 

5802 

5925 

6049 

6172 

6296 

6419 

124 

3o2 

6543 

6666 

6789 

6913 

7036 

7159 

7282 

7405 

7529 

76,52 

123 

3o3 

7775 

7898 

8021 

8144 

8267 

8389 

8512 

8635 

87.58 

8881 

123 

354 

9003 

9126 

9249 

9371 

9494 

9616 

9739 

9861 

9984 

.106 

123 

355 

550228 

0351 

0473 

0595 

0717 

0840 

0962 

1084 

1206 

1328 

122 

356 

1450 

1572 

1694 

1816 

1938 

2060 

2181 

2.303 

2425 

2.547 

122 

1  357 

2C68 

2790 

2911 

3033 

31.55 

3276 

3398 

.3519 

3640 

3762 

121 

■358 

3883 

4004 

4126 

4247 

4368 

4489 

4610 

4731 

4852 

4973 

121 

1  359 
360 

5094 

5215 
6423 

5336 
6544 

5457 
6664 

5578 
6785 

5699 
6905 

5820 

5940 

6061 
7267 

6182 
7.387 

121 
120 

556303 

7026 

7146 

361 

7507 

7627 

7748 

7868 

7988 

8108 

8228 

8.349 

8469 

8.589 

120 

362 

8709 

8829 

8948 

9068 

9188 

9308 

9428 

9548 

9667 

9787 

120 

363 

9907 

..26 

.146 

.265 

.385 

..504 

.624 

.743 

.863 

.982 

119 

364 

561101 

1221 

1340 

1459 

1578 

1698 

1817 

1936 

2055 

2174 

119 

365 

2293 

2412 

2531 

2650 

2769 

2887 

3006 

3125 

3244 

3362 

119 

m6 

3481 

3600 

3718 

3837 

3955 

4074 

4192 

4311 

4429 

4548 

119 

367 

4666 

4784 

4903 

5021 

51.39 

5257 

5376 

5494 

5612 

5730 

lis 

368 

5848 

5966 

6084 

6202 

6320 

6437 

6.555 

6673 

6791 

6909 

118 

369 

7026 

7144 

7262 

7379 

7497 

7614 

7732 

7849 

7967 

8084 

118 

370 

568202 

8319 

8436 

8554 

8671 

8788 

8905 

9023 

9140 

9257 

117 

371 

9374 

9491 

9608 

9725 

9842 

99.59 

..76 

.19.3 

.309 

.426 

117 

372 

570543 

0660 

0776 

0893 

1010 

1126 

1243 

13.59 

1476 

1.592 

117 

373 

1709 

1825 

1942 

2058 

2174 

2291 

2407 

2.523 

26.39 

2755 

116 

3V4 

2872 

2988 

3104 

3220 

3336 

3452 

3568 

3684 

3800 

.3915 

116 

375 

4031 

4147 

4263 

4379 

4494 

4610 

4726 

4841 

4957 

5072 

116 

376 

5188 

5303 

5419 

5534 

5650 

5765 

.5880 

5996 

6111 

6226 

115 

377 

6341 

6457 

6572 

6687 

6802 

6917 

7032 

7147 

7262 

7377 

115 

378 

7492 

7607 

7722 

7836 

7951 

8066 

8181 

8295 

8410 

8525 

115 

379 

380 

8639 

8754 
9898 

8868 
..12 

8983 
.126 

9097 
.241 

9212 
.35.5 

9326 
.469 

9441 

9555 

9669 
.811 

114 

114 

579784 

..583 

.697 

381 

580925 

1039 

1153 

1267 

1.381 

1495 

1608 

1722 

1836 

19,50 

114 

382 

2063 

2177 

2-291 

2404 

2518 

2631 

2745 

2858 

2972 

3085 

114 

383 

3199 

3312 

3426 

3539 

3652 

3765 

3879 

3992 

4105 

4218 

113 

384 

4331 

4444 

4557 

4670 

4783 

4896 

5009 

5122 

5235 

5348 

113 

385 

5461 

5574 

5686 

5799 

5912 

6024 

6137 

6250 

6362 

6475 

113 

386 

6587 

6700 

6812 

6925 

7037 

7149 

7262 

7374 

7486 

7599 

112 

387 

7711 

7823 

7935 

8047 

8160 

8272 

8384 

8496 

8608 

8720 

112 

.388 

8832 

8944 

9056 

9167 

9279 

9391 

9503 

9615 

9726 

9838 

112 

3^9 
390 

9950 

..61 
1176 

.173 
1287 

.284 
1399 

.396 
1510 

..507 
1021 

.619 
17,32 

.730 
1843 

.842 
1955 

.953 
2066 

112 
HI 

591065 

391 

2177 

2288 

2399 

2510 

2621 

2732 

2843 

29.54 

3064 

3175 

111 

392 

3286 

3397 

3508 

3618 

3729 

3840 

39.50 

4061 

4171 

4282 

111 

393 

4393 

4503 

4614 

4724 

4834 

4945 

5055 

5165 

5276 

5386 

110 

394 

5496 

5606 

5717 

5827 

5937 

6047 

6157 

626. 

6377 

6487 

110 

395 

6597 

6707 

6817 

6927 

7037 

7146 

7256 

7366 

7476 

7586 

110 

396 

7695 

7805 

7914 

8024 

8134 

8243 

8353 

8462 

8572 

8681 

110 

397 

8791 

8900 

9009 

9119 

9228 

9337 

9446 

95.56 

9665  ^774 

109 

398 

9883 

9992 

.101 

.210 

.319 

.428 

.537 

.646 

.7.551  864 

109 

399 

600973 

1082 

1191 

1299 

1408 

1517 

1625 

1734 

18431  19i>i  1091 

N.  1   0   1  1   1  2  1  3  i  4  1  5  i  6  1  7  1  8  i  9 

n 

A  TABLE  OF  LOGARITHMS  FROM  1  TO  10,000. 

7 

nr 

1   0   |i|2|3|4|5|6|7!8|9|d| 

:400 

1 602060 

2169 

2277 

2386 

2494 

2603 

2711 

2819 

2928 

3036'  108  1 

401 

1   3144 

3253 

3361 

3469 

3577 

3686 

3794 

3902 

4010 

4118 

108 

402 

4226 

4334 

4442 

4550 

4658 

4766 

4874 

4982 

5089 

6197 

108 

403 

5305 

5413 

5.521 

5628 

5736 

5844 

.5951 

6059 

6166 

6274 

108 

404 

6381 

6489 

6596 

6704 

6811 

6919 

7026 

7133 

7241 

7348 

107 

405 

7455 

7562 

7669 

7777 

r884 

7991 

8098 i  8205 

8312 

8419 

107 

406 

8526 

8633 

8740 

8847 

89.54 

906 1 

9167 

9274 

9381 

9488 

107 

407 

9594 

i  9701 

9808 

9914 

..21 

.128 

.2.34 

.341 

.447 

.,554 

107 

408 

610660 

0767 

0873 

0979 

1086 

1192 

1298 

1405 

1511 

1617 

106 

409 
410 

1723 

1829 
2890 

1936 
2996 

2042 
3102 

2148 
3207 

2254 
3313 

2360 
3419 

2466 
3525 

2572 
3630 

2678 
3736 

106 
106 

612784 

411 

3842 

3947 

1  4053 

4159 

4264 

4370 

4475 

4.581 

4686 

4792 

106 

412 

4897 

5003 

5108 

.5213 

5319 

5424 

5529 

5634 

5740 

5845 

105 

413 

5950 

6055 

6160 

6265 

6370 

6476 

6581 

6686 

6790 

6895 

105 

414 

7000 

7105 

7210 

7315 

7420 

7626 

7629 

7734 

7839 

7943 

105 

415 

8048 

8153 

8257 

8362 

8466 

8571 

8676 

8780 

8884 

8989 

105 

416 

9093 

9198 

9302 

9406 

9511 

9615 

9719 

9824 

9928 

..32 

104 

417 

620136 

0240 

0344 

0448 

0552 

0656 

0760 

0864 

0968 

1072 

101 

418 

1176 

1280 

1384 

1488 

1592 

1696 

1799 

1903 

2007 

2110 

104 

419 

420 

2214 
623249 

2318 
3353 

2421 
3456 

2525 
3559 

2628 
3663 

2732 
37'56 

2835 

29.39 
3973 

3042 
4076 

3146 
4179 

104 
.03 

3809 

421 

4282 

4385 

4488 

4591 

4695 

4798. 

4901 

5004 

6107 

.5210 

103 

422 

5312 

5415 

6518 

5621 

6724 

5827 

5929 

6032 

61.35 

6238 

103 

423 

6340 

6443 

6546 

664S 

6751 

68S3 

6956 

7058 

7161 

7263 

103 

424 

7366 

7468 

7571 

7673 

7775 

7378 

7980 

8082 

8185 

8287 

102 

425 

8389 

8491 

8593 

8695 

8797 

8900 

9002  9104 

9206 

9308 

102 

426 

9410 

9512 

9613 

9715 

9817 

9919 

..211  .123 

.224 

.326 

102 

427 

630428 

0530 

0631 

0733 

0836 

0936 

1038 

1139 

1241 

1342 

102 

428 

1444 

1545 

1647 

1748 

1849 

1951 

2052 

2163 

2255 

2350 

101 

429 

430 

2457 
633468 

2559 
^569 

2660 
3670 

2761 
3771 

2862 
3872 

2963 
3973 

3064 

3165 

4175 

3266 
4276 

3367 
4376 

101 
100 

4074 

431 

4477 

4578 

4679 

4779 

4880 

4981 

5081 

5182 

5283 

5383 

100 

132 

5484 

5584 

5685 

6785 

5886 

5986 

6087 

6187 

6287 

6388 

100 

433 

6488 

6588 

6688 

6789 

6889 

6989 

7089 

7189 

7290 

7390 

100 

434 

7490 

7590 

7690 

7790 

7890 

7990 

8090 

8190 

8290 

8389 

99 

435 

8489 

8589 

8689 

8789 

88S8 

8988 

9088 

9188 

9287 

9387 

99 

436 

9486 

9586 

9686 

9785 

9885 

9984 

..84 

.183 

.283 

.382 

99 

437 

640481 

0581 

0680 

07it) 

0879 

0978 

1077 

1177 

1276 

1375 

99 

438 

1474 

1573 

1672 

1771 

1871 

1970 

2069 

2168 

2267 

2366 

99 

439 
440 

2465 

2503 
3551 

2662 
3650 

2761 
3749 

2860 
3847 

2959 
3946 

3058 

3156 

4143 

3255 

4242 

3354 
4340 

99 
98 

643453 

4044 

441 

4439 

4537 

4636 

4734 

4832 

4931 

5029 

5127 

5226 

5324 

98 

442 

6422 

5521 

5619 

5717 

5815 

5913 

6011 

6110 

6208 

6306 

98 

443 

6404 

6502 

6600 

6698 

6796 

6894 

6992 

7089 

7187 

7285 

98 

444 

7383 

7481 

7579 

7676 

7774 

7872 

7969 

8067 

8165 

8262 

98 

445 

8360 

8458 

8.5.551 

86.53 

8750 

8848 

8945 

9043 

9140 

9237 

97 

446 

9335 

9452 

9530! 

9627 

9724 

9821 

9919 

..16 

.113 

.210 

97 

447 

650308 

0405 

0502! 

0599 

0696 

0793 

0890 

0987 

1084 

1181 

97 

448 

1278 

1375 

14721 

1569 

1666 

1762 

18.59 

1956 

2053 

2150 

97 

4:49 

450 

2246 

2343 
3309 

24401 

340.5 

2536 
3502 

2633 

2730 

2826 
3791 

2923 

3888 

3019 
3984 

3116 
4080 

97 
96 

653213 

3.5981  3695 

451 

4177 

4273 

4369' 

4465 

45621  4658 

4754 

4850 

4946 

5042 

96 

452 

5138 

5235 

.5331 

.5427 

.5.5231  5619 

5715 

5810 

5906 

6002:  96  I 

453 

6098 

6194 

6290 

6386 

64821  6577 

6673 

6769 

6864 

6960 

96 

454 

7050 

7152 

7247 

7343 

7438  7534 

7629 

7725 

7820 

7916 

96 

455 

8011 

8107 

8202 

8298 

8393 

8488 

8684 

8679 

8774 

8870 

95 

456 

8965 

9060 

91.55 

9250 

9346 

94-11 

9536 

9631 

9726 

9821 

95 

457 

9916 

..11 

.106 

.201 

.296 

..391 

.486 

..581 

.676 

.771 

95 

458 

660>!65 

0960 

1055 

1150 

1245 

1.339 

1434 

1529 

1623 

1718 

95 

459 

18131 

1907 

2002 

2096 

2191 

2286 

2380 

2475 

2569 

2663 

95 

XI 

<•   1  1  1  2  i  3  1  4  1  5  i  6  1  7  1  8  1-  9  1 

D. 

u 


A  TAHLE  OF  LOOARITIIMS  FROM    I    TO    10.000. 


N.  1   0   1  1  1  2  1  3  1  4  1  5  1  6  1  7  1  8  1  9  1  D.  i 

460 

6627581 2852 1 2947 1 

3041  3135,  3230, 

3324,  3418| 

3512  3607,  941 

461 

3701 

3795 

3889 

3983  4078 

4172 

4266 

4360 

4454 

4.548!  94 

162 

4642 

4736 

4S30 

4924  5018 

5112 

5206 

5299 

5393 

54871  94 

463 

5581 

5675 

5769! 

5862  5956 

6050 

6143 

6237 

6331 

6424 

94 

464 

6518 

6612 

67051 

6799  6892 

6986 

7079 

7173 

7266 

7360 

94 

465 

7453 

7546 

7640| 

7733  7826 

7920 

8013 

8106 

8199 

8293 

93 

406 

8386 

8479 

8572 

»665  87591 

8S52I 

8945 

9038 

9131 

9224  93 1 

467 

9317 

9410 

9503 

9596  9689 i 97821 

9875 

99671 

..60 

.1.53  931 

468 

670246 

0339 

0431 

0524  0617107101 

0802 

0895 

0988 

1080 

93 

469 

1173 

1265 

135S 

1451 

1543  1636 

1728 

1821 

1913 

2005 

93 

470 

672098 

2100 

2283 

2375 

2467  2560 

2852 

2744 

2836 

2929!  92 

471 

:.021 

3113 

3205; 

3297 

3390 

3482 

3574 

3666 

3758 

3850;  92 

472 

•1942 

4034 

4126 

4218 

4310 

4402 

4494 

4586 

4677 

4769  92 

473 

4861 

4953 

5045 

5137 

5228 

5320 

5412 

5503 

5595 

5687  92 

474 

5778 

5870 

5962 

6053 

0145 

6236 

6328 

6419 

6511 

6602!  92 

475 

6694 

6785 

6876 

6968 

7059 

7151 

7242 

7333 

7424 

7516  91 

476 

7607 

7698 

7789 

7881 

7972 

8063 

8154 

S245 

8336 

8427 

91 

477 

8518 

8609 

8700 

8791 

8882 

8973 

9064 

9155 

9246 

9337 

91 

478 

9428 

9519 

9610 

9700 

9791 

GS82 

9973 

..63 

.154 

.245 

91 

479 

480 

680336 

0426 
1332 

0517 
1422 

0607 
1513 

0698 
1603 

0789 
1693 

0879 

1784 

0970 

1874 

1060 
1964 

1151 
2055 

91 
90 

681241 

481 

2145 

223o 

2326 

2416 

2506 

2596 

2680 

2777 

2867 

2957 

90 

482 

3047 

3137 

3227 

3317 

3407 

3497 

3587 

3677 

3767 

3857 

90 

483 

3947 

4037 

4127 

4217 

4307 

4396 

4486 

4576 

4666 

4756 

90 

484 

4845 

4935 

5025 

5114 

5204 

5294 

5383 

5473 

5563 

5652 

90 

485 

5742 

5831 

5921 

6010 

6100 

6189 

6279 

6368 

6458 

6547 

89 

486 

6636 

6726 

6815 

6904 

6994 

7083 

7172 

7261 

7351 

7440 

89 

487 

7529 

7618 

7707 

7796 

7886 

7975 

8064 

8153 

8242 

8331 

su 

488 

8420 

8509 

8598 

8687 

8776 

8865 

8953 

9042 

9131 

9220 

89 

489 
490 

9309 
690196 

9398 
0285 

9486 
0373 

9575 
0462 

9664 
0550 

9753 
0639 

9841 

9930 

..19 
0905 

.107 
0993 

89 
89 

0728 

0816 

491 

1081 

1170 

1258 

1347 

1435 

1524 

1612 

1700 

1789 

1877 

88 

492 

1965 

2053 

2142 

2230 

2318 

2406 

2494 

2583 

2671 

2759 

88 

493 

2847 

2935 

3023 

3111 

3199 

3287 

3375 

3463 

3551 

3639 

88 

494 

3727 

3815 

3903 

3991 

4078 

4166 

4254 

4342 

4430 

4517 

88 

495 

4605 

4093 

4781 

4868 

4956 

5044 

5131 

5219 

5307 

5394 

88 

496 

5482 

5569 

5657 

5744 

5832 

5919 

6007 

6094 

6182 

6269 

87 

497 

6356 

6444 

6531 

6618 

6706 

6793 

6880 

6968 

7055 

7142 

87 

498 

7229 

7317 

7404 

7491 

7578 

7665 

7752 

7839 

7926 

8014 

87 

499 

8101 

8188 

8275 

8362 

8449 

8535 

8622 

8709 

8796 

8883 

87 

500 

698970 

9057 

9144 

9231 

9317 

9404 

9491 

9578 

9664 

9751 

87 

501 

9838 

9924 

..11 

..98 

.184 

.271 

.358 

.444 

.531 

.617 

87 

502 

700704 

0790 

0877 

0963 

1050 

11.36 

1222 

1309 

1395 

1482 

80 

503 

1568 

1654 

1741 

1827 

1913 

1999 

2086 

2172 

2258 

2344 

86 

504 

2431 

2517 

2603 

2689 

2775 

2861 

2947 

3033 

3119 

3205 

86 

505 

3291 

3377 

3463 

3549 

3635 

3721 

3807 

3895 

3979 

4065 

86 

506 

4151 

4236 

4322 

4408 

4494 

4579 

4665 

4751 

4837 

4922 

8(5 

507 

5008 

5094 

5179 

5265 

5350 

5436 

5522 

5607 

5693 

5778 

86 

508 

5864 

5949 

6035 

6120 

6206 

6291 

6376 

6462 

6547 

6632 

85 

509 

6718 

6803 

0888 

6974 

7059 

7144 

7229 

7315 

7400 

7485 

85 

510 

707570 

7655 

7740 

7826 

7911 

7996 

8081 

8160 

8251 

8336 

'S5 

611 

8421 

8506 

8591 

8676 

8761 

8846 

8931 

9015 

9100 

9185 

85 

512 

9270 

9355 

9440 

9524 

9609 

9694 

9779 

9863 

9948 

..33 

85 

513 

710117 

0202 

0287 

0371 

0456 

0540 

0625 

0710 

0794 

0879 

85 

514 

0963 

1048 

1132 

1217 

1301 

1385 

1470 

1554 

1639 

1723 

84 

515 

1807 

1892 

1976 

2060 

2144 

2229 

2313 

2397 

2481 

2566 

84 

516 

2650 

2734 

2818 

2902 

2986 

3070 

3154 

3238 

3323 

3407 

84 

517 

3491 

3575 

3650 

3742 

3826 

3910 

3994 

4078 

4162 

4246 

84 

518 

4330 

4414 

4497 

4581 

4665 

4749 

4833 

4916 

5000 

5084 

84 

519  1   5167 

5251 

5335 

5418 

5502 

558C 

5669 

5753' 583b 

f  5920 

84 

N.  1   0   1  1  1  2  1  3  1  4  1  5  1  6  1  7  1  8  !  9  1  D.1 

A  TABLE  OF  LOGARITHMS  FROM   1   TO    10,000. 


N. 

1   0   |l|2|3|4|5|6|7|8|9iD.  1 

■520 

7160031  6087 

0170 

62.54 

6337 

6421 

6504 

6588 

6671 

6754 

83 

521 

6838 

6921 

7004 

7088 

7171 

7254 

7338 

7421 

7504 

7687 

83 

522 

7671 

7754 

7837 

7920 

8003 

8086 

8169 

8253 

8336 

8419 

83 

523 

8502 

8585 

8668 

8751 

8834 

8917 

9000 

9083 

9165 

9248 

83 

524 

9331 

9414 

9497 

9580 

9663 

9745 

9828 

9911 

9994 

..77 

83 

525 

720159 

0242 

0325 

0407 

0490 

0573 

0655 

0738 

0821 

0903 

83 

52G 

0986 

1068 

1151 

1233 

1316 

1398 

1481 

1563 

1646 

1728 

82 

527 

1811 

189.? 

1975 

20.58 

2140 

2222 

2305 

2387 

2469 

2652 

82 

528 

2634 

2716  2798 

2881 

2963 

3045 

3127 

3209 

3291 

,'">374 

82 

529 

345G 

3538 

3620 

3702 

3784 

3866 

3948 

4030 

4112 

4194 

82 

530 

724276 

4358 

4440 

4522 

4604 

4685 

4767 

4849 

4931 

6013 

82 

531 

5095 

5176 

5258 

6340 

6422 

6603 

5585 

5667 

5748 

5830 

82 

532 

5912 

5993 

6075 

6156 

6238 

6320 

6401 

6483 

6664 

6640 

82 

533 

6727 

6809 

6890 

6972 

7053 

7134 

7216 

7297 

7379 

7460 

81 

634 

7541 

7623. 

7704 

7785 

7866 

7948 

8029 

8110 

8191 

8273 

81 

535 

8354 

8435 

8516 

8597 

8678 

8759 

8841 

8922 

9003 

9084 

81 

536 

9165 

9246 

9327 

9408 

9489 

9570 

9651 

9732 

9813 

9893 

81 

537 

9974 

..55 

.136 

.217 

.298 

.378 

.459 

•540 

.621 

.702 

81 

538 

730782 

0863 

09 14 

1024 

1105 

1186 

1266 

1347 

1428 

1608 

81 

539 

1589 

1669 

1750 

1830 

1911 

1991 

2072 

2152 

2233 

2313 

81 

540 

732394 

2474 

2555 

263.^ 

2715 

2796 

2876 

2956 

3037 

3117 

80 

541 

3197 

3278 

3368 

34"  j> 

3518 

3598 

3679 

3769 

3839 

3919 

80 

542 

3999 

4079 

4160 

4.i0 

4320 

4400 

4480 

4660 

4640 

4720 

80 

543 

4800 

4880 

4960 

6040 

6120 

5200 

6279 

5359 

5439 

5519 

80 

544 

5599 

5679 

5759 

6838 

5918 

6998 

6078 

6157 

6237 

6317 

80 

545 

6397 

6476 

6666 

6636 

6715 

6795 

6874 

6954 

7034 

7113 

80 

546 

7193 

7272 

7352 

7431 

7511 

7690 

7670 

7749 

7829 

7908 

79 

547  1 

7987 

8067 

8146 

8225 

8305 

8384 

8463 

8543 

8622 

8701 

79 

548 

87S1 

8860 

8939 

9018 

9097 

9177 

9256 

9336 

9414 

9493 

79 

549 

9572 

9651 

9731 

9810 

9889 

9968 

..47 

.126 

.205 

.284 

79 

550 

740363 

0442 

0521 

0600 

0678 

0767 

0836 

0915 

0994 

1073 

79 

551 

1152 

1230 

1309 

1388 

1467 

1646 

1624 

1703 

1782 

1860 

79 

552 

1939 

2018 

2096 

2176 

2254 

2332 

2411 

2489 

2668 

2646 

79 

553 

2725 

2804 

2882 

2961 

3039 

3118 

3196 

3275 

3353 

3431 

78 

554 

3510 

3588 

3667 

3745 

.3823 

3902 

3980 

4058 

4136 

4215 

78 

555 

4293 

4371 

4449 

4528 

4606 

4684 

4762 

4840 

4919 

4997 

78 

556 

5075 

5153 

5231 

5309 

6387 

6465 

6543 

5621 

5G99 

6777 

78 

557 

5855 

6933 

6011 

6089 

6167 

6245 

6323 

6401 

6479 

6666 

78 

558 

6G34 

6712 

6790 

6868 

6945 

7023 

7101 

7179 

7256 

7334 

78 

559 

7412 

7489 

7567 

7645 

7722 

7800 

7878 

7955 

8033 

8110 

78 

560 

748188 

8266 

8343 

8421 

8498 

8576 

8663 

8731 

8808 

8886 

77 

561 

8963 

9040 

9118 

9195 

9272 

9350 

9427 

9604 

9682 

9669 

77 

562 

9736 

9814 

9891 

9968 

..46 

.123 

.200 

.277 

.354 

.431 

77 

563 

750508 

0586 

0663 

0740 

0817 

0894 

0971 

1048 

1126 

1202 

77 

564 

1279 

1356 

1433 

1510 

1587 

1664 

1741 

1818 

1896 

1972 

77 

565 

2048 

2125 

2202 

2279 

2366 

2433 

2509 

2586 

2663 

2740 

77 

566 

2816 

2893 

2970 

3047 

3123 

3200 

3277 

3353 

3430 

3606 

77 

567 

3583 

3660 

3736 

3813 

3889 

3966 

4042 

4119 

4195 

4272 

77 

568 

4348 

4425 

4501 

4578 

4654 

4730 

4807 

4883 

4960 

6036 

76 

569 
570 

5112 

6189 
5951 

5265 
6027 

5341 
6103 

6417 
6180 

5494 
6256 

5570 
6332 

5646 
6408 

5722 
6484 

6799 
6660 

76 
76 

755875 

571 

6636 

6712 

6788 

6864 

6940 

7016 

7092 

7168 

7244 

7320 

76 

572 

7396 

7472 

7648 

7624 

7700 

7775 

7851 

7927 

8003 

8079 

76 

573 

8155 

8230 

8306 

8382 

8458 

8533 

8«09 

8685 

8761 

8836 

76 

574 

8912 

8988 

9063 

9139 

9214 

9290 

9366 

9441 

9517 

9592 

76 

575 

9668 

9743 

9819 

9894 

9970 

..46 

.121 

.196 

.272 

.347 

75 

576 

760422 

0498 

0573 

0649 

0724 

0799 

0875 

0950 

1025 

1101 

75 

577 

1176 

1251 

1326 

1402 

1477 

1.552 

1627 

1702 

1778 

18.53 

75 

578 

1928 

2003 

2078 

2163 

2228 

2303 

2378 

2463 

2529 

2604 

75 

579 

2679 

275412829 

2904  2978 

3O53I  3128 

3203 

3278 

3363 

75 

nTJ 

0   1  1  1  2  1  3  1  4  i  5  1  6  1  7  1  8  1  y  1  i).  1 

10 


A  TABLE  OF  LOGARITHMS  FROM   1   TO    10,000. 


N. 

1   0   |lf2|3i4|5|6|7|8l9|D.  1 

580 

76342): 

i   3503|357t 

i   3653, 3727 

3802;  3877,  395x 

4027 

|4101 

75 

581 

4176 

425 

4326 

)  440C 

447.= 

455C 

)  462^3 

I  469S 

4774 

4848 

75 

582 

492C 

499t 

507S 

.   5147 

5221 

5296 

>  5370  5445 

5520 

5594 

75 

583 

566!J 

574L 

581^ 

5892 

5966 

0041 

!  6115  619^ 

6264 

6338 

74 

584 

6413 

1  6487 

6562 

6636 

6716 

678f 

j  6S5i 

>  6933 

7007 

7082 

74 

585 

7156 

i  7230 

7304 

7379 

7453 

7527 

7601 

7675 

7749 

7«23 

74 

586 

7898 

17972 

8046 

8120 

8194 

8268 

i  834S 

8416 

8490 

8564 

74 

587 

8638 

8712 

8786 

8860 

8934 

900^i 

1  908-^ 

9156 

9230 

9303 

74 

588 

9377 

9451 

9525 

9599 

9673 

9746 

1  982C 

9894 

9968 

..42 

74 

589 

770115 

0189 

0263 

0336 

0410 

0484 

0557 

0631 

0705 

0778 

1  74 

590 

770852 

0926 

0999 

1073 

1146 

1220 

1293 

1367 

1440 

1514 

li 

591 

1587 

1661 

1734 

1808 

1881 

1955 

2028 

2102 

21  75 

2248 

73 

592 

2322 

2395 

2468 

2542 

2615 

2688 

2762 

2835 

2908 

2981 

73 

593 

3055 

3128 

3201 

3274 

3348 

3421 

3494 

3567 

3640 

3713 

73 

594 

3786 

3860 

3933 

4006 

4079 

4152 

4225 

4S98 

4371 

4444 

73 

595 

4517 

4590 

4663 

4736 

4809 

4882 

4955 

5028 

6100 

5173 

73 

596 

5246 

5319 

5392 

5465 

5538 

5610 

5683 

!  5756 

5829 

6902 

73 

597 

5974 

6047 

6120 

6193 

6265 

6338 

6411 

16483 

6556 

6629 

73 

598 

6701 

6774 

6846 

6919 

6992 

7064 

7137 

7209 

7282 

7354 

73 

599 
600 

7427 

7499 

8224 

7572 
8296 

7644 

7717 

7789 
8513 

7862 
8585 

7934 

8658 

8006 
8730 

8079 

8802 

72 
72 

778151 

8368 1  8441 

601 

8874 

8947 

9019 

9091!  9163 

9236 

9308 

9380 

9452 

9524 

72 

602 

9596 

9669 

9741 

9813 

9885 

9957 

..29 

.101 

.173 

.245 

72 

603 

780317 

0389 

0461 

0533 

0605 

0677 

0749 

0821 

0893 

0965 

72 

604 

1037 

1109 

1181 

1253 

1324 

1396 

1468 

1540 

1612 

1684 

72 

605 

1755 

1827 

1899 

197] 

2042 

2114 

2186 

2258 

2329 

2401 

72 

606 

2473 

2544 

2616 

2688 

2759 

2831 

2902 

2974 

3046 

3117 

72 

607 

3189 

3260 

3332 

3403 

3475 

3546 

3618 

3689 

3761 

3832 

71 

608 

3904 

3975 

4046 

4118 

4189 

4261 

4332 

4403 

4475 

4546 

71 

609 

4617 

4689 

4760 

4831 

4902 

4974 

5045 

5116 

5187 

.5259 

71 

610 

785330 

5401 

5472 

6543 

5615 

6686 

5757 

6828 

5899 

5970 

71 

611 

6041 

6112 

6183 

6254 

6325 

6396 

6467 

6538 

6609 

6680 

71 

612 

6751 

6822 

6893 

6964 

7035 

7106 

7177 

7248 

7319 

7390 

71 

613 

7460 

7531 

7602 

7673 

7744 

7815 

7885 

7956 

8027 

8098 

71 

614 

8168 

8239 

8310 

8381 

8451 

8622 

8693 

8663 

8734 

8804 

71 

615 

8875 

8946 

9016 

9087 

9157 

9228 

9299 

9369 

9440 

9510 

71 

616 

9581 

9651 

9722 

9792 

9863 

9933 

...4 

..74 

.144 

.215 

70 

617 

790285 

0356 

0426 

0496 

0567 

0637 

0707 

0778 

0848 

0918 

70 

618 

0988 

1059 

1129 

1199 

1269 

1340 

1410 

1480 

1550 

1620 

70 

619 

1691 

1761 
2462 

1831 
2532 

1901 
2602 

1971 

2673 

2041 

2742 

2111 
2812 

2181 

2882 

2252 
2952 

2322 
3022 

70 
70 

620 

792392 

621 

3092 

3162 

3231 

3301 

3371 

3441 

3511 

3581 

3651 

3721 

70 

622 

3790 

3860 

3930 

4000 

4070 

4139 

4209 

4279 

4349 

4418 

70 

623 

4488 

4558 

4627 

4697 

4767 

4836 

4906 

4976 

5045 

6115 

70 

624 

5185 

5254 

5324 

5393 

5463 

6532 

5602 

5672 

6741 

5811 

70 

625 

5880 

5949 

6019 

6088 

6158 

6227 

6297 

6366 

6436 

6505 

68 

626 

6574! 

6644 

6713 

6782 

6852 

6921 

6990 

7060 

71291 

7198 

69 

627 

7268! 

7337 

7406 

7475 

7545 

7614 

7683 

7752 

7821 

7890 

69 

628 

7960 

8029 

8098 

8167 

8236 

8305 

8374 

8443 

8513 

8582 

69 

629 

8651 

8720! 

8789 

8858  8927 

89961 

9066 

9134 

9203 

9272 

69 

630 

799341 

9409 

9478 

9547  9616 

9685! 

9754 

9823 

9892 

9961 

69 

631 

800029' 

00981 

0187 

0236!  0305! 

0373 

0442 

0511 

0580 

0648! 

69 

632 

0717 

0786 

0854 

0923  0992 

1061 

1129 

1198 

1266 

1335 

69 

633 

1404 

1472 

1541 

1609  I678i 

1747 

1815 

I884I 

1952 

2021 

69 

634 

2089! 

2158! 

2226 

22951  2363! 

2432 

2500 

25681 

2637! 

2705 

69 

635 

2774! 

2842' 

2910 

29791 3047 

3116i 

3184 

32.521 

33211 

3389 

68 

636 

34571 

35251 

3594 

3662! 3730 

37981 

38071 

3935  i 

4003! 

40711 

68  ( 

637 

4139i 

4208' 

4276 

4344: 4412  4480- 

4548! 

4616| 

4685 

47.53! 

68 

638 

48211 

4889 

4957 

5025  5093  5161 

5229. 

5297.  5365! 

.543.?:  68  1 

639 

55011 

5509  5637 i 

5705  5773'  584 1'  5908i 

.0976'  6044' 

6112'  68 

N.  I 

0   I     1  2  I  3  !  4  !  5  1  6  1  7  1  8  1  9  ;  D.  } 

A  TABLE  or  LOGARITHMS  PROM    I    TO   10,000. 


N. 

1   0 

1  1  1  2  1  3  1  4  1  6 

I  6  1  7  1  8  1  9  1  D.  1 

640 

806180 

6248 

63161 63«4 

6451 

6519 

6587 

6655 

6723 

6790 

68 

641 

6858 

6926 

6994 

7061 

7129 

7197 

7264 

7332 

7400 

7467 

68 

642 

7535 

7603 

7670 

7738 

7806 

7873 

7941 

8008 

8076 

8143 

68 

643 

8211 

8279 

8346 

8414 

8481 

8549 

8616 

8684 

8751 

8818 

67 

644 

8886 

8953 

9021 

9088 

9156 

9223 

9290 

9358 

9425 

9492 

67 

645 

9560! 9627 

9094 

9762 

9829 

9896 

9964 

..31 

..98 

.165 

67 

646 

810233 

0300 

0367 

0434 

0501 

0569 

0636 

0703 

0770 

0837 

67 

647 

0904 

0971 

1039 

1106 

1173 

1240 

1307 

1374 

1441 

1508 

67 

648 

1575 

1642 

1709 

1776 

1843 

1910 

1977 

2044 

2111 

2178 

67 

619 
650 

2245 

2312 
2980 

2379 
3047 

2445 
3114 

2512 
3181 

2579 
3247 

2646 
3314 

2713 
3381 

2780 
3448 

2847 
3514 

67 

67 

812913 

651 

3581 

3648 

3714 

3781 

3S4S 

3914 

3981 

4048 

4114 

4181 

67 

652 

4248 

4314 

4381 

4447 

4514 

4581 

4647 

4714 

4780 

4847 

67 

653 

4913 

4980 

5046 

5113 

5179 

5246 

5312 

5378 

5445 

5511 

66 

654 

5578 

56-44 

5711 

5777 

5843 

5910 

5976 

6042 

6109 

6175 

66 

655 

624] 

6308 

6374 

6440 

6506 

6573 

6639 

6705 

6771 

6838 

66 

656 

6904 

6970 

7036 

7102 

7169 

7235 

7301 

7367 

7433 

7499  66  1 

657 

7565 

7631 

7698 

7764 

7830 

7896 

7962 

8028 

8094 

8160 

66 

658 

8226 

8292 

8358 

8424 

8490 

8556 

8622 

8688 

8754 

8820 

66 

659 
660 

8885 

8951 
9610 

9017 
9676 

9083 
9741 

9149 

9807 

9215 

9873 

9281 
9939 

9346 

...4 

9412 
..70 

9478 
.136 

66 
66 

819544 

661 

820201 

0267 

0333 

0399 

0464 

0530 

0595 

0661 

0727 

0792 

66 

662 

0858 

0924 

0989 

1055 

1120 

1186 

1251 

1317 

1382 

1448 

66 

663 

1514 

1579 

1645 

1710 

1775 

1841 

1906 

1972 

2037 

2103 

65 

664 

2168 

2233 

2299 

2364 

2430 

2495 

2560 

2626 

2691 

2756 

65 

665 

2822 

2887 

2952 

3018 

3083 

3148 

3213 

3279 

3344 

3409 

65 

666 

3474 

3539 

3605 

3670 

3735 

3800 

3865 

3930 

3996 

4061 

65 

667 

4126 

4191 

4256 

4321 

4386 

4451 

4516 

4581 

4646 

4711 

65 

668 

4776 

4841 

4906 

4971 

5036 

5101 

5166 

5231 

5296 

5361 

65 

G69 

5426 

5491 

5556 

5621 

5686 

5751 

5815 

5880 

5945 

6010 

65 

670 

826075 

6140 

6204 

6269 

6334 

6399 

6464 

6528 

6593 

6658 

65 

671 

6723 

6787 

6852 

6917 

6981 

7046 

7111 

7175 

72401 7305 

65 

672 

7369 

7434 

7499 

7563 

7628 

7692 

7757 

7821 

7886 

7951 

65 

073 

8015 

8080 

8144 

8209 

8273 

8338 

8402 

8467 

8531 

8595 

64 

674 

8660 

8724 

8789 

8853 

8918 

8982 

9046 

9111 

9175 

9239 

64 

675 

9304 

9368 

9432 

9497 

9561 

9625 

9690 

9754 

9818 

9882 

64 

676 

9947 

..11 

..75 

.139 

.204 

.268 

..332 

•396 

.460 

.525 

64 

677 

830589 

0653 

0717 

0781 

0845 

0909 

0973 

1037 

1102 

1166!  64 

678 

1230 

1294 

1358 

1422 

1486 

1550 

1614 

1078 

1742 

1806!  64 

679 

1870 

1934 

1998 

2062 

2126 

2189 

2253 

2317 

2381 

2445 

64 

680 

832509 

2573 

2637 

2700 

2764 

2828 

2892 

2956 

3020 

3083 

64 

681 

3147 

3211 

3275 

3338 

3402 

3466 

3530 

3593 

3657 

372 1  j  64  1 

632 

3784 

3848 

3912 

3975 

4039 

4103 

4166 

4230 

4294 

4357|  64  1 

683 

4421 

4484 

4548 

4611 

4675 

4739 

4802 

4866 

4929 

4993 

64 

684 

5056 

5120 

5183 

5247 

5310 

5373 

5437 

5500 

5564 

5627 

63 

685 

5691 

5754 

5817 

5881 

5944 

6007 

6071 

6134 

6197 

6261 

63 

686 

6324 

6387 

6451 

6514 

6577 

6641 

6704 

6767 

6830 

6894 

63 

687 

6957 

7020 

7083 

7146 

7210 

7273 

7336 

7399 

7462 

7525!  63 

688 

7588 

7652 

7715 

7778 

7841 

7904 

7967 

8030 

8093 

8156!  63 

689 

8219 

8282 

8345 

8408 

8471 

8534 

8597 

8660 

8723 

87^6!  63 

690 

838849 

8912 

8975 

9038 

9101 

9164 

9227 

9289 

9352 

9415!  63 

691 

9478 

9541 

9604 

9667 

9729 

9792 

9855 

9918 

9981 

..43  63 

692 

840106 

0169 

0232 

0294 

0357 

0420 

0482 

0545 

0608:  007 1;  63 

693 

0733 

0796 

0859 

0921 

098  i 

1046 

1109 

1172 

12341  12971  63 

694 

1359 

1422 

1485 

1547 

1610 

1672 

1735 

1797 

1860,  1922:  63 

695 

1985 

2047 

2110 

2172 

2235 

2297 

2360 

2422 

2484!  2547:  62 

696 

2609 

2672 

2734 

2796 

2859 

2921 

2983 

3046 

310813170.  62 

697 

3-233 

3295 

3357 

3420 

34  S  2 

3544 

3606 

3669 

373113793.  62 

698 

3855 

3918 

3980 

4042 

i  1 04 

41  (56 

4229 

429 1 

4353144151  62 

699 

4477 

4539 

460; 

4>>r,  1 

4726 

47.^8 

4S50 

4912  4974;  n()3G  62  | 

N. 

0   1  1  1  2  1  3  1  4  1  5  1  6  1  7  1  8  t  9  !  n.  1 

12 


A  TABLE  OF  LOGARITHMS  FROM   1   TO  10,000. 


N. 

1   0   1  1  1  2  1  3  1  4  1  5  1  6  1  7  1  8  1  9  1  D.  1 

700 

845098 

5160'  5222 

5284 

5346 

5408 

5470 

5532 

5594 

5656 

02 

701 

5718 

5780 

5842 

5904 

5966 

6028 

6090 

6151 

6213 

6275 

62 

702 

6337 

6399 

6461 

6523 

6585 

6646 

6708 

6770 

6832 

6894 

62 

703 

6955 

7017 

7079 

7141 

7202 

7264 

7326 

7388 

7't49 

7511 

65. 

704 

7572 

7634 

7696 

7758 

7819 

7881 

7943 

8004 

8066 

8128 

67. 

705 

8189 

8251 

8312 

8374 

8435 

8497 

8559 

8620 

8682 

8743 

6>"{ 

706 

8805 

8866 

8928 

8989 

9051 

9112 

9174 

9235 

9297 

9358 

ei 

707 

9419 

9481 

9542 

9604 

9665 

9726 

9788 

9849 

9911 

9972 

61 

70S 

850033 

0095 

0156 

0217 

0279 

0340 

0401 

0462 

0524 

0.585 

61 

709 
710 

0646 

0707 
1320 

0769 
1381 

0830 
1442 

0891 
1503 

09.52 
1564 

1014 
1625 

1075 
1686 

1136 
1747 

1197 
1809 

61 
61 

851258 

711 

1870 

1931 

1992 

2053 

2114 

2175 

2236 

2297 

2358 

2419 

61 

712 

2480 

254  i 

2602 

2663 

2724 

2785 

2846 

2907 

2908 

302ii 

61 

713 

3090 

3150 

3211 

3272 

3333 

3.'^94 

3455 

3516 

3577 

3037 

6] 

714 

3898 

3759 

3820 

3881 

3941 

4002 

4063 

4124 

4185 

4245 

61 

715 

4306 

4367 

4428 

4488 

4549 

4610 

4670 

4731 

4792 

4H52 

61 

716 

4913 

4974 

5034 

5095 

5150 

.5216 

5277 

.5337 

5398 

5459 

61 

717 

5519 

5580 

5640 

5701 

5761 

5822 

5882 

5943 

6003 

6064 

61 

718 

6124 

6185 

6245 

6306 

6360 

6427 

6487 

6548 

6608 

6668 

60 

719 

6729 

6789 

6850 

6910 

0970 

7031 

7091 

7152 

7212 

7272 

60 

720 

857332 

7393 

7453 

7513 

7574 

7634 

7694 

7755 

7815 

7875 

60 

721 

7935 

7995 

8056 

8116 

8170 

8236 

8297 

8357 

8417 

8477 

60 

722 

8537 

8597 

8657 

8718 

8778 

8833 

8898 

8958 

9018 

9078 

60 

723 

9138 

9198 

9258 

9318 

9379 

9439 

9499 

9559 

9619 

9679 

60 

724 

9739 

9799 

9859 

9918 

9978 

..38 

..98 

.158 

.218 

.278 

60 

725 

860338 

0398 

0458 

0518 

0578 

0637 

0697 

0757 

0817 

0877 

60 

726 

0937 

0996 

1056 

1116 

1176 

1236 

1295 

1355 

1415 

1475 

60 

727 

1534 

1594 

1654 

1714 

1773 

1833 

1893 

1952 

2012 

2072 

60 

728 

2131 

2191 

2251 

2310 

2370 

2430 

2489 

2.549 

2608 

266S 

60 

729 

2728 

2787 

2847 

2906 

2966 

3025 

3085 

3144 

3204 

3263 

60 

730 

883323 

3382  3442 i 

3501 

3561 

3620 

3080 

3739 

3799 

:^58 

59 

731 

3917 

3977 

4036 

4096 

4155 

4214 

4274 

4333 

4392 

4452 

59 

732 

4511 

4570 

4630 

4689 

4748 

4808 

4867 

4926 

4985 

5045 

59 

733 

5104 

5163 

5222 

5282 

5341 

5400 

5459 

.5519 

5578 

5037 

59 

734 

5696 

5755 

5814 

5874 

5933 

5992 

6051 

6110 

6169 

0228 

59 

735 

6287 

6346 

6405 

6465 

6524 

6583 

6642 

6701 

6760 

0819 

59 

73b 

6878 

6937 

6996 

7055 

7114 

7173 

7232 

7291 

7350 

7409 

59 

737 

7467 

7526 

7585 

7644 

7703 

7762 

7821 

7880 

7939 

7998 

59 

73S 

8056 

8115 

8174 

8233 

8292 

8350 

8409 

8468 

8527 

8.586 

59 

739 
740 

8644| 

8703 
9290 

8762 
9349 

8821 
9408 

8879 
9466 

8938 
9525' 

8997 
9584 

9056 
9642 

9114 
9701 

9173 
9700 

59 
59 

869232 

741 

9818 

9877 

9935 

9994 

..53 

.111 

.170 

.228 

.287 

.345 

59 

742 

870404 

0462 

0521 

0579 

0638 

0696 

0755 

0813 

0872 

0930 

58 

743 

0989 

1047 

1106 

1164 

1223 

1281 

1339 

1398 

14.56 

1515 

58 

744 

1573 

1631 

1690 

1748 

1806 

1865 

1923 

1981 

2040 

2098 

58 

745 

2156 

2215 

2273 

2331 

2389 

2448 

2506 

2564 

2622 

2681 

58 

746 

2739 

2797 

2855 

2913 

2972 

3030 

3088 

3146 

3204 

3262 

58 

747 

3321 

3379 

3437 

3495 

3553 

3611 

3669 

3727 

3785 

3844 

58 

748 

3902 

3960 

4018 

4076 

4134 

4192 

4250 

4308 

4366 

4424 

58 

749 
750 

4482 

4540 
5119 

4598 

4656 
5235 

4714 
5293 

4772 
,5351 

4830 
5409 

4888 
5466 

4945 
5524 

5003 
5582 

58 

58 

87506 1 

5177 

751 

5640 

5098 

5756 

5813 

5871 

5929 

5987 

6045 

6102 

0100 

58 

752 

6218 

6276 

6333 

6391 

6449 

6507 

6564 

6622 

6680 

0737 

58 

753 

6795 

6853 

6910 

6968 

7020 

7083 

7141 

7199 

7256 

73 1 4 

58 

754 

7371 

7429 

7487 

7544 

7602 

7659 

7717 

7774 

7832 

7889 

58 

755 

7947 

8004 

8002 

S119 

8177 

8234 

8292 

8349 

8407 

8404 

57 

756 

8522 

8579 

8637 

8694 

8752 

8809 

8866 

8924 

8981 

9039 

57 

757 

9096 

9153! 9211 

9268 

9325 

9383 

9440 

9497 

95.55 

9012 

57 

■r5« 

9669 

97261 9784 

9841 

9898 

9956 

..13 

..70 

.127 

.185 

57 

759 

880242, 

02991 0356 

0413 

0471 

0528 

0585 

0642 

0699 

0756 

57 

,  N.  1 

0    1  1  i  2  1  3  1  4  1  5  1  6  1  7  1  8  1  9  ;  D.  1 

.V  TAlU.r   Oi    LOGAItlTIIMS  FKOM    I    TO    10,000. 


13 


N.  1 

0   |l!2|3|4l5|6|7l8|9lD.  1 

7fi0 

880814 

0871  0928, 

0985 

1042 

1099 

1156 

1213 

1271'  1328 

57 

761 

1385 

1442 

1499 

1556 

1613 

1670 

1727 

1784 

18411  l'^98 

57 

762 

1955 

2012 

2069 

2126 

2183 

2240 

2297 

2354 

24111  2468 

57 

763 

2525 

2581 

2638 

2695 

2752 

2809 

2866 

2923 

2980 

30371 

57 

764 

3093 

3150 

3207 

3264 

3321 

3377 

3434 

3491 

3548 

3605 

57 

765 

3661 

3718 

3775 

3832 

3888 

3945 

4002 

4059 

4115 

4172 

57 

766 

4229 

4285 

4342 

4399 

4455 

4512 

4569 

4625 

4682 

4739 

57 

767 

4795 

4852 

4909 

4965 

5022 

5078 

5135 

5192 

5248 

5305 

57 

768 

5361 

5418 

5474 

5531 

5587 

5644 

5700 

5757 

5813 

5870 

57 

769 

770 

5926 

5983 
6547 

6039 
6604 

6096 
6660 

6152 
6716 

6209 
6773 

6265 
6829 

6321 

6885 

6378 

6942; 

6434 
6998 

56 
56 

886491 

771 

7054 

7111 

7167 

72231 

7280 

7336 

7392 

7449 

7505! 

7561 

56 

772 

7617 

7674 

7730 

7786 

7842 

7898 

7955 

8011 

8067| 

8123 

56 

773 

8179 

8236 

8292 

8348 

8404 

8460 

8516 

8573 

8629| 

8685 

56 

774 

8741 

8797 

8853 

8909 

8965 

9021 

9077 

9134 

9190! 

9246 

56 

775 

9302 

9358 

9414 

9470 

9526 

9582 

9638 

9694 

97501 

9806 

56 

776 

9862 

9918 

9974 

..30 

..86 

.141 

.197 

.253 

.3091 

.365 

56 

777 

890421 

0477 

0533 

0589 

0645 

0700 

0756 

0812 

0868 

0924 

56 

778 

0980 

1035 

1091 

1147 

1203 

1269 

1314 

1370 

1426 

1482 

56 

779 

780 

1537 

1593 

2150 

1649 
2206 

1705 
2262 

1760 
2317 

1816 
2373 

1872 
2429 

1928 

2484 

1983 
2540 

2039 
2595 

56 
56 

892095 

781 

2651 

2707 

2762 

2818 

2873 

2929 

2985 

3040 

3096 

3151 

56 

782 

3207 

3262 

3318 

3373 

3429 

3484 

3540 

3595 

3651 

3706 

56 

783 

3762 

3817 

3873 

3928 

3984 

4039 

4094 

4150 

4205 

4261 

55 

784 

4316 

4371 

4427 

4482 

4538 

4593 

4648 

4704 

4759 

4814 

55 

785 

4870 

4925 

4980 

5036 

5091 

5146 

5201 

5257 

5312 

5367 

55 

786 

5423 

5478 

5533 

5588 

5644 

5699 

5754 

5809 

5804 

5920 

55 

787 

5975 

6030 

6085 

6140 

6195 

6251 

6306 

6361 

6416 

6471 

55 

788 

6526 

6581 

6636 

6692 

6747 

6802 

6857 

6912 

6967 

7022 

55 

789 
790 

7077 

7132 

7682 

7187 
7737 

7242 
7792 

7297 

7847 

7352 
7992 

7407 
7957 

7462 
8012 

7517 
8067 

7572 
8122 

55 
55 

897627 

791 

8176 

8231 

8286 

8341 

8396 

8451 

8506 

8561 

8615 

8670 

55 

792 

8725 

8780 

8835 

8890 

8944 

8999 

9054 

9109 

9164 

9218 

55 

793 

9273 

9328 

9383 

9437 

9492 

9547 

9602 

9656 

9711 

9766 

55 

794 

9821 

9875 

9930 

9985 

..39 

..94 

.149 

.203 

.258 

.312 

55 

795 

900367 

0422 

0470 

0531 

0586 

0640 

0695 

0749 

0804 

0859 

55 

79G 

0913 

0968 

1022 

1077 

1131 

1186 

1240 

1295 

1349 

1404 

55 

797 

1458 

1513 

1567 

1622 

1676 

1731 

1785 

1840 

1894 

1948 

54 

798 

2003 

2057 

2112 

2166 

2221 

2275 

2329 

2384 

2438 

2492 

54 

799 
800 

2547 

2601 
3144 

2655 
3199 

2710 
3253 

2764 
.3307 

2818 
3361 

2873 
3416 

2927 
3470 

2981 
3524 

3036 
3578 

54 

54 

903090 

301 

3633 

3687 

3741 

3795 

3849 

3904 

3958 

4012 

4066 

4120 

54 

802 

4174 

4229 

4283 

4337 

4391 

4445 

4499 

4553 

4607 

4661 

54 

803 

4716 

4770 

4824 

4878 

4932 

4986 

5040 

5094 

5148 

5202 

54 

804 

5256 

5310 

5364 

5418 

5472 

5526 

5580 

5634 

5688 

5742 

54 

805 

5796 

5850 

5904 

5958 

6012 

6066 

6119 

6173 

6227 

6281 

54 

806 

6335 

6389 

6443 

6497 

6551 

6604 

6658 

6712 

6766 

6820 

54 

807 

6874 

6927 

6981 

7035 

7089 

7143 

7196 

7250 

7304 

7358 

54 

80d 

7411 

74G5 

7519 

7573 

7626 

7680 

7734 

7787 

7841 

7895 

54 

809 

7949 

8002 

8056 

8110 

8163 

8217 

8270 

8324 

8378 

8431 

54 

810 

908485 

8539 

8592 

8646 

8699 

8753 

8807 

8860 

8914 

8967 

54 

811 

9021 

9074 

9128 

9181 

9235 

9289 

9342 

9396 

9449 

9503 

54 

812 

9556 

9610 

9663 

9716 

9770 

9823 

9877 

9930 

9984 

..37 

53 

813 

910091 

0144 

0197 

0251 

0304 

0358 

0411 

0464 

0518 

0571 

53 

814 

0624 

0678 

0731 

0784 

0838 

0891 

0944 

0998 

1051 

1104 

53 

815 

1158 

1211 

1264 

1317 

1371 

1424 

1477 

1530 

1584 

1637 

53 

816 

1690 

1743 

1797 

1850 

1903 

1956 

200S 

2063 

2116 

216S 

53 

817 

2222 

2275 

2328 

2381 

2435 

248g 

|2541 

2594 

-  2647 

270C 

53 

818 

2753 

2806 

2859 

2913 

2966 

30  IS 

307S 

312^ 

317)^ 

3231 

53 

819 

•S2H4 

.  3337 

339C 

3443 

3496 

354S 

13605 

,  365f 

370S 

3761 

63 

JL 

1   U   |ll2l3l4l5l6l7|8!9|Dl 

14 

A  TABLI 

:  OP  LOGARITHMS  FROM  I  TO  10, 

000. 

"n!" 

1   0   |l!2|3|4|6|6|7|8|9|D.  1 

"82(r 

913814,3867 

3920 

3973 

4026 

4079 

4132 

4184 

4237 

42901  53  1 

821 

4343 

4396 

4449 

4502 

4555 

4608 

4660 

4713 

4766 

4819 

53 

822 

4872 

4925 

4977 

5030 

5083 

5136 

5189 

5241 

5294 

5347 

53 

823 

5400 

5453 

5505 

5558 

5611 

5664 

5716 

5769 

.5822 

5875 

53 

824 

5927 

,  5980 

0033 

6085 

61.38 

6191 

6243 

6296 

6349 

640] 

53 

825 

6454 

6507 

6559 

6612 

6664 

6717 

6770 

6822 

6875 

G927 

53 

826 

6980 

7033 

7085 

7138 

7190 

7243 

7295 

7348 

7400 

7453 

53 

827 

7506 

7558 

7611 

7663 

7716 

7768 

7820 

7873 

7925 

7978 

52 

828 

8030 

8083 

8135 

8188 

8240 

8293 

8345 

8397 

8450 

8502 

52 

829 

8555 

8607 

8659 

8712 

8764 

8816 

8869 

8921 

8973 

9026 

52 

830 

019078 

9130 

9183 

9235 

9287 

9340 

9392 

9444 

9496 

9549 

52 

831 

9001 

9653 

9706 

9758 

9810 

9862 

9914 

9967 

..19 

..71 

52 

832 

920123 

0176 

0228 

0280 

0332 

0384 

0436 

0489 

0541 

0593 

52 

833 

0645 

0697 

0749 

0801 

0853 

0900 

0958 

1010 

1062 

1114 

52 

834 

1166 

1218 

1270 

1322 

1374 

1426 

1478 

1530 

1582 

1634 

52 

835 

1686 

1738 

1790 

1842 

1894 

1946 

1998 

2050 

2102 

2154 

52 

836 

2206 

2258 

2310 

2362 

2414 

2466 

2518 

2570 

2622 

2674 

52 

837 

2725 

2777 

2829 

2881 

2933 

2985 

3037 

3089 

3140 

3192 

52 

838 

3244 

3296 

3348 

3399 

3451 

3503 

3555 

3607 

3658 

3710 

52 

839 

840 

3762 
924279 

3814 
4331 

3865 
4383 

3917 
4434 

3969 
4486 

4021 
4538 

4072 

4124 
4641 

4176 
4693 

4228 
4744 

52 
52 

4589 

841 

4796 

4848 

4899 

4951 

5003 

5054 

5106 

5157 

5209 

526] 

52 

842 

5312 

5364 

5415 

5467 

5518 

5570 

5621 

5673 

5725 

5776 

52 

843 

5828 

5879 

5931 

5982 

6034 

6085 

6137 

6188 

6240 

6291 

51 

844 

6342 

6394 

6445 

6497 

6548 

6600 

6651 

6702 

6754 

6805 

51 

845 

6857 

6908 

6959 

7011 

7062 

7114 

7165 

7216 

7268 

7319 

51 

846 

7370 

7422 

7473 

7524 

7576 

7627 

7678 

7730 

7781 

7832 

51 

847 

7883 

7935 

7986 

8037 

8088 

8140 

8191 

8242 

8293 

8345 

51 

848 

8396 

8447 

8498 

8549 

8601 

8652 

8703 

8754 

8805 

8857 

51 

849 

850 

8908 

8959 
9470 

9010 
9521 

9061 
9572 

9112 
9623 

9163 
9674 

9215 
9725 

9266 
9776 

9317 

9827 

9368 

51 

929419 

9879]  51 

851 

9930 

9981 

..32 

..83 

.134 

.185 

.236 

.287 

.338 

.389,  51 

852 

930440 

0491 

0542 

0592 

0643 

0694 

0745 

0796 

0847 

08981  51 

853 

0949 

1000 

1051 

1102 

1153 

1204 

1254 

1305 

1356 

1407;  51 

854 

1458 

1509 

1560 

1610 

1661 

1712 

1763 

1814 

1865 

1915  51 

855 

1966 

2017 

2068 

2118 

2169 

2220 

2271 

2322 

2372 

2423 

51 

856 

2474 

2524 

2575 

2626 

2677 

2727 

2778 

2829 

2879 

2930 

51 

857 

2981 

3031 

3082 

3133 

3183 

3234 

3285 

3335 

3386 

3437 

51 

858 

3487 

3538 

3589 

3639 

3690 

3740 

3791 

3841 

3892 

3943 

51 

859 
860 

3993 
934498 

4044 
4549 

4094 

4145 
4650 

4195 
4700 

4246 
4751 

4296 
4801 

4347 

4852 

4397 

4448 
4953 

51 

50 

4599 

4902 

861 

5003 

5054 

5104 

5154 

5205 

5255 

5306 

5356 

5406 

5457 

50 

862 

5507 

5558 

5608 

5658 

5709 

5759' 5809 

5860 

5910 

5960 

50 

863 

6011 

6061 

6111 

6162 

6212 

6262' 6313 

6363 

6413 

6463 

50 

864 

6514 

6564 

6614 

6665 

6715 

6765 

6815 

6865 

6916 

6966 

50 

865 

7016 

7066 

7117 

7167 

7217 

7267 

7317 

7367 

7418 

7468 

50 

866 

7518 

7566 

7618 

7668 

7718 

7769 

7819 

7869 

7919 

7969 

50 

867 

8019 

8069 

8119 

8169 

8219 

8269 

8320 

8370 

8420 

8470 

50 

868 

8520 

8570 

8620 

8670 

8720 

8770 

8820 

8870 

8920 

8970 

50 

869 

9020 

9070 

9120 

9170 

9220 

9270 

9320 

9369 

9419 

9469 

50 

870 

939519 

9569 

9619 

9669 

9719 

9769 

9819 

9869 

9918 

9968 

50 

871 

940018 

0068 

0118 

0168 

0218 

0267 

0317 

0367 

0417 

0467 

50 

872 

0516 

0566 

0616 

0666 

0716 

0765 

0815 

0865 

0915 

0964 

50 

87b 

1014 

1064 

1114 

1163 

1213 

1263 

1313 

1362 

1412 

1462 

50 

874 

1511 

1561 

1611 

1660 

1710 

1760 

1809 

1859 

1909 

1958 

50 

875 

2008 

2058 

2107 

2157 

2207 

2256 

2306 

2355 

2405 

2455 

50 

876 

2504 

2554 

2603 

2653 

2702 

2752 

2801 

2851 

2901 

2950 

50 

877 

3000 

3049 

3099 

3148 

3198 

3247 

3297 

3346 

3396 

3445 

49 

878 

3495 

3544 

3593 

3643 

3692 
4186 

3742 

3791 

3841 

3890 

2939  49 1 

879 

3989 

4038 

4088 

4137 

42361  4285 

4335 

4384'  4433  49 | 

N. 

0   il|2|3|4|5'6l7|8l9|n! 

A  TABLE  Of  LOGARITHMS  FROM  I  TO  10,000. 

15 

nn 

0   1  1  1  2  1  3  1  4  1  5  1  6  1  7  1  8  1  9  i  D.  1 

880 

944483 

4532 

4581  46311 

4680] 

4729 

4779 

48281 

4877 

4927!  49 

881 

4976 

5025 

5074 

5124 

5173 

5222 

5272 

5321 

5370 

5419'  49 

882 

5469 

5518 

5567 

5616 

5665 

5715 

5764 

5813 

5862 

5912;  49 

883 

5961 

6010 

6059 

6108 

6157 

6207 

6256 

6305 

6354 

6403  49 

884 

6452 

6501 

6551 

6600 

6649 

6698 

6747 

6796 

6845 

6894  49 

885 

6943 

6992 

7041 

7090 

7140 

7189 

7238 

7287 

7336 

73851  49 

886 

7434 

7483 

7532 

7581 

7630 

7679 

7728 

7777 

7826 

7875  49 

887 

7924 

7973 

8022 

8070 

8119 

8168 

8217 

8266 

8315 

83641  49 

888 

8413 

8462 

8511 

8560 

8609 

8657 

8706 

8755 

8804 

8853|  49 

889 
890 

8902 

8951 

8999 

9048 
9536 

9097 
9585 

9146 
9634 

9195 
9683 

9244 
9731 

9292 

9780 

9341  49 
9829|  49 

949390 

9439  ^488 

891 

9878 

9926  9975 

..24 

..73 

.121 

.170 

.219 

.267 

.316  49 

892 

950365 

0414  0462 

0511 

0560 

0608 

0657 

0706 

0754 

08031  49 

893 

0851 

0900 

0949 

0997 

1046 

1095 

1143 

1192 

1240 

1289!  49 

894 

1338 

1386 

1435 

1483 

1532 

1580 

1629 

1677 

1726 

17751  49 

895 

1823 

1872 

1920 

1969 

2017 

2066 

2114 

2163 

2211 

2260i  48 

396 

2308 

2356 

2405 

2453 

2502 

2550 

2599 

2647 

2696 

2744!  48 

897 

2792 

2841 

2889 

2938 

2986 

3034 

3083 

3131 

3180 

3229  48 

898 

3276 

3325 

3373 

3421 

3470 

3518 

3566 

3615 

3663 

37ir  48 

899 

3760 

3808 

3856 

3905 

3953 

4001 

4049 

4098 

4146 

4194'  48 

900 

954243 

4291 

4339 

4387 

4435 

4484 

4532 

4580 

4628 

46771  48 

901 

4725 

4773 

4821 

4869 

4918 

4966 

5014 

5062 

5110 

5158!  48 

902 

5207 

5255 

5303 

5351 

5399 

5't47 

5495 

5543 

5592 

5640,  48 

903 

5688 

5736 

5784 

5832 

5880 

5928 

5976 

6024 

6072 

6120  48 

904 

6168 

6216 

6265 

6313 

6361 

6409 

6457 

6505 

6553 

6601  48 

905 

6649 

6697 

6745 

6793 

6840 

6888 

6936 

6984 

7032 

7080;  48 

906 

71 28 

7176 

7224 

7272 

7320 

7368 

7416 

7464 

7512 

7559:  48 

907 

7607 

7655 

7703 

7751 

7799 

7847 

7894 

7942 

7990 

8038:  48 

908 

8086 

8134 

8181 

S229 

8277 

83251  8373 

8421 

8468 

8516  48 

909 
910 

8564 

8612 
9089 

8659 
9137 

8707 
9185 

8755 
9232 

8803  8850 
9280  9328 

8898  8946 

8994;  48 

959041 

9375  9423' 9471  48  | 

911 

9518 

9566 

9614 

9661 

9709 

9757 

9804 

9852  9900 

9947 

4S 

912 

9995 

..42 

..90 

.138 

.185 

.233 

.280 

.328  .376 

.423 

48 

913 

960471 

0518 

0566 

0613 

0661 

0709 

0756 

0804' 0851 

0899 

48 

914 

0946 

0994 

1041 

1089 

1136 

1184 

1231 

1279 

1326 

1374 

47 

915 

1421 

1469 

1516 

1563 

1611 

1658 

1706 

1753 

1801 

1848 

47 

916 

1895 

1943 

1990 

2038 

2085 

2132 

2180 

2227 

2275 

2322 

47 

917 

2369 

2417 

2464 

2511 

2559 

2606 

2653 

2701 

274« 

2795 

47 

918 

2843 

2890 

2937 

2985 

3032 

3079 

3126 

3174 

3221 

3268 

47 

919 
920 

3316 

3363 
3835 

3410 

3882 

3457 
3929 

3504 
3977 

1  3552 

4024 

3599 
4071 

3646 

4118 

3693 
4165 

3741 
^212 

47 
47 

963788 

921 

4260 

4307 

4354 

4401 

4448 

4495 

4542 

4590 

4637 

4584 

47 

922 

4731 

4778 

4825 

4S72 

4919 

i  4966 

5013 

5061 

5108 

1  5155 

47 

923 

5202 

5249 

5296 

5343 

5390 

:  5437 

5484 

5531 

5578 

5625 

47 

924 

5672 

5719 

5766 

5813 

;  5860 

5907 

5954 

6001 

6048 

6095 

47 

925 

6142 

6189 

6236 

6283 

6329 

6376 

6423 

6470 

6517 

6564 

47 

926 

6611 

6658 

16705 

6752 

j  6799 

6845 

6892 

6939 

6'i80 

7033 

47 

927 

7080 

7127 

7173 

7220 

1  7267 

!  7314 

7361 

7408 

7454 

7501 

47 

928 

7548 

7595 

7642 

7688 

7735 

!  7782 

7829 

7875 

7922 

7969 

47 

929 

8016 

8062 

8109 

8156 

1  8203 

1  8249 

8296 

8343 

8390 

8436 

47 

930 

968483 

1  8530 

;8576 

8623 

]  8670 

i  371t 

8763 

8810 

8856 

8903;  47 

931 

8950 

8996 

'9043 

909C 

913C 

:  918S 

9229 

9276 

9323 

9369;  47 

932 

9416 

9463 

19509 

9556 

9602 

1  964f 

9695 

9742 

9789 

9835  47 

933 

9882 

9928 

9975 

..21 

1  ..08 

!  .114 

t  .101 

.207 

.254 

.3001  47 

934 

970347 

039.g 

044C 

048fc 

i  053S 

"i  05791  062C 

0672 

071S 

0765i  46 

935 

0815 

085b 

090^ 

[   095 

!0997 

! 1044!  10901 1137 

118;] 

1229!  46 

936 

1276 

)  132S 

136[ 

)\  U\l 

)!  1461 

■  1508'i  lo54i  1601 

1647 

1693'  40 

937 

174( 

)  178e 

)  1835 

>1  187t 

)  192f 

)!  19711  20181206^ 

[   211C 

)  2157:  46 

938 

220: 

^  224f 

)|229. 

jl  2345 

I'  238? 

?  12434:  24811252' 

f   257[ 

{  2619  46 

939 

266 

i  2715 

2'  2  75 J 

^i  280^ 

I  2Hr> 

'289 

r  294r 

r298f 

)  303^ 

)  3082 

46 

.1   I 


I     6     i     7     I     8     I     9     I   D. 


16 


A  TABLE  OF  LOGARITHMS  FROM  1   TO  10,000- 


JL- 

0   |l|2|3|4|5|6|7|8l9|D.  1 

940 

973128 

3174 

3220 

3266 

3313 

3359 

3405 

3451 

3497 

3543 

46 

941 

3590 

3636 

3682 

3728 

3774 

3820 

3866 

3913 

3959 

4005 

46 

942 

4051 

4097 

4143 

4189 

4235 

4281 

4327 

4374 

4420 

4466 

46 

943 

4512 

4558 

4604 

4650 

4696 

4742 

4788 

4834 

4880 

4926 

46 

944 

4972 

5018 

5064 

5110 

5156 

5202 

5248 

5294 

5340 

5386 

46 

945 

5432 

5478 

5524 

5570 

5616 

5662 

5707 

5753 

5799 

5845 

46 

946 

5891 

5937 

5983 

6029 

6075 

6121 

6167 

6212 

6258 

6304 

40 

947 

6350 

6396 

6442 

6488 

6533 

6579 

6625 

6671 

6717 

6763 

46 

948 

6808 

6854 

6900 

6946 

6992 

7037 

7083 

7129 

7175 

7220 

46 

949 
950 

7266 

7312 
7769 

7358 

7815 

7403 
7861 

7M9 
7906 

7495 

7952 

7541 
7998 

7586 
8043 

7632 

8089 

7678 
8135 

46 
46 

977724 

951 

8181 

8226 

8272 

8317 

8363 

8409 

8454 

8500 

8546 

8591 

46 

952 

8637 

8683 

8728 

8774 

8819 

8865 

8911 

8956 

9002 

9047 

46 

953 

9093 

9138 

9184 

9230 

9275 

9321 

9366 

9412 

9457 

9503 

46 

954 

9548 

9594 

9639 

9685 

9730 

9776 

9821 

9867 

9912 

9958 

46 

955 

9S0003 

0049 

0094 

0140 

0185 

0231 

0276 

0322 

0367 

0412 

45 

956 

0458 

0503 

0549 

0594 

0640 

0685 

0730 

0776 

0821 

0867  45 

957 

0912 

0957 

1003 

1048 

1093 

1139 

1184 

1229 

1275 

1320  45 

958 

1366 

1411 

1450 

1501 

1547 

1592 

1637 

1683 

1728 

1773  45 

959 
960 

1819 

1864 
2316 

1909 
2362 

1954 

2407 

2000 
2452 

2045 
2497 

2090 
2543 

2135 

2588 

2181 
2633 

2226  45 
2678  45 

9S2271 

961 

2723 

2769 

2814 

2859 

2904 

2949 

2994 

3040 

3085 

3130  45 

962 

3175 

3220 

3265 

3310 

3356 

3401 

3446 

3491 

3536 

358 1|  45 

963 

3626 

3671 

3716 

3762 

3807 

3852 

3897 

.3942 

.3987 

4032 

45 

961 

4077 

4122 

4167 

4212 

4257 

4302 

4347 

4392 

4437 

4-182 

45 

965 

4527 

4572 

4617 

4062 

4707 

4752 

4797 

4842 

4887 

4932 

45 

966 

4977 

5022 

5067 

5112 

5157 

5202 

5247 

5292 

5337 

5382 

45 

967 

5426 

5471 

5516 

5561 

5606 

5651 

5696 

5741 

5786 

.5830 

45 

968 

5875 

5920 

5965 

6010 

6055 

6100 

6144 

6189 

6234 

0279|  45 

969 
970 

6324 
986772 

6369 

6817 

6413 
6861 

6458 

6503 
6951 

6548 
6996 

6593 

6637 

7085 

6682 
7130 

6727  45 
7175J  45 

6906 

7040 

971 

7219 

7264 

7309 

7353 

7398 

7443 

7488 

7532 

7577 

7622  45 

972 

7666 

7711 

7756 

78  00 

7845 

7890 

7934 

7979 

8024 

8068!  45 

973 

8113 

8157 

8202 

8247 

8291 

8336 

8381 

8425 

8470 

8514J  45 

974 

8559 

8604 

8648 

8693 

8737 

8782 

8826 

8871 

8916 

89G0|  45 

975 

9005 

9049 

9094 

9138 

9183 

9227 

9272 

9316 

9361 

9405 

1  45 

976 

9450 

9494 

9539 

9583 

9628 

9672 

9717 

9701 

9806 

9850 

44 

977 

9395 

9939 

9983 

..28 

..72 

.117 

.161 

.206 

.2.50 

.294 

U 

978 

990339 

0383 

0428 

0472 

0516 

0561 

0605 

0650 

0694 

0738 

U 

979 

0783 

0827 

0871 

0916 

0960 

1004 

1049 

1093 

1137 

1182 

44 

980 

991226 

1270 

1315 

1359 

1403 

1448 

1492 

1536 

1580 

1625 

44 

981 

1669 

1713 

1758 

1802 

1846 

1890 

1935 

1979 

2023 

2067 

44 

982 

2111 

2156 

2200 

2244 

2288 

2333 

2377 

2421 

2465 

2509[  U 

983 

2554 

2598 

2642 

2686 

2730 

2774 

2819 

2863 

2907 

2951 1  44 

984 

2995 

3039 

3083 

3127 

3172 

3216 

3260 

3304 

3348 

3392'  44 

985 

3436 

3480 

3524 

3568 

3613 

3657 

3701 

3745 

3789 

38331  44 

9S6 

3877 

3921 

3965 

4009 

4053 

4097 

4141 

4185 

4^29 

4273  44 

987 

4317 

4361 

4405 

4449 

4493 

4537 

4581 

4625 

4669 

4713  44 

988 

4757 

4801 

4845 

4889 

4933 

4977 

5021 

5065 

5108 

51521  44 

989 
990 

5196 

5240 
5679 

5284 

5338 
5767 

5372 

.5811 

5416 

5854 

5460 

.5898 

5504 
5942 

5547 

5986 

6591   44 
6"!)30l  44 

995635 

5723 

991 

6074 

6117 

6161 

6205 

6249 

6293 

6337 

6380 

6424 

6408'  44 
69061  44 

992 

6512 

6555 

6599 

6643 

0687 

6731 

6774 

6818 

6862 

993 

6949 

6993 

7037 

7080 

7124 

7168 

7212 

7255 

7299 

7343 

44 

^94 

7386 

7430 

7474 

7517 

7561 

7605 

7648 

7692 

7736 

7779 

44 

095 

7823 

7867 

7910 

7954 

7998 

8041 

8085 

8129 

8172 

8216 

44 

996 

8259 

8303 

8347 

8390 

8434 

8477 

8521 

8564 

8608 

8652 

44 

997 

8695 

8739 

8782 

8826 

8869 

8913 

89.56 

9000 

9043 

9087 

44 

998 

9131 

9174 

9218 

92-81 

9305 

9348 

9392 

9435 

9479 

9522 

44 

999 

9565; J609 

96521 9996 

9739 

9783 

9826 

9870 

9913 

9957 

43 

In. 

1   0   1  1   1  2  1  3  1  4  1  5  1  6  1  7  1  8  1   9  1  D.  1 

A  TABLE 

OF 

LOGARITHMIC 
SINES    AND     TANGENTS 

FOR  ETERT 

DEGREE  AND  MINUTE 

OF  THE  QUADRANT. 


N.  B  The  minutes  in  the  left-hand  column  of  each  pagC; 
increasing  downwards,  belong  to  the  degrees  at  the  top ;  and 
those  increasing  upwards,  in  the  right-hand  column,  belong  ti 
the  degrees  below. 


18 

(0  Degree.)  a  table  op  logarithmic 

M. 

1   Sine   1   D. 

1   Cosine   |  D. 

1   Tang. 

1   D. 

1   Cotang.  1   ] 

"^ 

O.OUUOUO 

10.000000 

O.OOOOOOl 

liiiiiiue. 

60 

1 

6.463726 

501717 

000000 

00 

6.4637261501717 

13.. 5.36274 

59 

2 

764756 

293485 

000000 

00 

764756 

293483 

235244 

58 

3 

940847 

208231 

000000 

00 

940847 

208231 

059153 

57 

4 

7.065786 

161517 

000000 

00 

7.065786 

161517 

12.934214 

56 

5 

162696 

131968 

000000 

00 

162696 

131969 

837304 

55 

6 

241877 

111575 

9.999999 

01 

241878 

111578 

7.58122 

54 

7 

308824 

96653 

999999 

01 

308825 

996.53 

691175 

53 

8 

366816 

85254 

999999 

01 

366817 

85254 

633183 

52 

9 

417968 

76263 

999999 

01 

417970 

76263 

582030 

51 

10 
11 

463725 
7.505118 

68988 

999998 

01 
01 

463727 

68988 

536273 

50 
49 

62981 

9.999998 

7.505120 

62981 

12.494880 

12 

.542906 

57936 

999997 

01 

542909 

57933 

457091 

48 

13 

577668 

53041 

999997 

01 

577672 

53642 

422328 

47 

14 

609853 

49938 

999996 

01 

609857 

49939 

390143 

46 

15 

639816 

46714 

999996 

01 

639820 

46715 

360180 

45 

16 

667845 

43881 

999995 

01 

667849 

43882 

332151 

44 

17 

694173 

41372 

999995 

01 

694179 

41373 

305821 

43 

18 

718997 

39135 

999994 

01 

719003 

39136 

280997 

42 

19 

742477 

37127 

999993 

01 

742484 

37128 

257516 

41 

20 

21 

764754 
7.785943 

35315 

999993 

01 
01 

764761 

35136 

235239 
12.214049 

40 
39 

.33672 

9.999992 

7.785951 

33673 

22 

806146 

32175 

999991 

01 

806155 

32176 

193845 

38 

23 

825451 

30805 

999990 

01 

825460 

30806 

174540 

37 

24 

843934 

29547 

999989 

02 

843944 

29549 

156056 

36 

25 

861662 

28388 

999988 

02 

861674 

28390 

138326 

35 

26 

878695 

27317 

999988 

02 

878708 

27318 

121292 

34 

27 

895085 

26323 

999987 

02 

89.5099 

26325 

104901 

33 

28 

910879 

25399 

999986 

02 

910894 

25401 

089106 

32 

29 

926119 

24538 

999985 

02 

926134 

24540 

073866 

31 

30 
31 

940842 

23733 

999983 

02 
02 

940858 

23735 

059142 

30 
29 

7.955082 

22980 

9.999982 

7.955100 

22981 

12.044900 

32 

968870 

22273 

999981 

02 

968889 

22275 

031111 

28 

33 

982233 

21608 

999980 

02 

9822.53 

21610 

017747 

27 

34 

995198 

20981 

999979 

02 

995219 

2'I:jS3 

004781 

•26 

35 

8.007787 

203901 

999977 

02 

8.007809 

2:!:^J2 

11.992191 

25 

30 

020021 

19831 

999976 

02 

020045 

l;)s:^:3 

979955 

24 

37 

031919 

19302 

999975 

02 

031945 

19305 

968055 

23 

38 

043501 

18801 

999973 

02 

043527 

18803 

956473 

Of> 

39 

054781 

18325 

999972 

02 

054809 

18327 

945191 

21 

40 
41 

065776 

17872 

999971 

02 
02 

065806 
8.076.531 

17874 
17444 

9.34194 

20 
19 

8.076.500 

17441 

9.999969 

11.923469 

42 

086965 

17031 

999968 

02 

086997 

17034 

913003 

18 

43 

097183 

16639 

999966 

02 

097217 

16642 

902783 

17 

44 

107J67 

16265 

999964 

03 

107202 

16268 

892797 

16 

45 

116926 

15908 

999963 

03 

116963 

15910 

883037 

15 

46 

126471 

15566 

999961 

03 

126510 

15568 

873490 

14 

47 

135810 

15238 

9999.59 

03 

135851 

15241 

864149 

13 

48 

144953 

14924 

999958 

03 

144996 

14927 

85.5004 

12 

49 

153907 

14622 

9999.56 

03 

1.53952 

14627 

846048 

11 

oOJ 
51 

162681 
8.171280 

14333 

999954 

03 
03 

162727 

14336 

837273 
11  828672 

10 
9 

14054 

9.999952 

8.171328 

14057 

52 

179713 

13786 

9999,50 

03 

179763 

13790 

820237 

8 

53 

187985 

13529 

999948 

03 

188036 

13532 

811964 

- 

54 

196102 

13280 

999946 

03 

196156 

13284 

803844 

6 

55 

204070 

13041 

999944 

3 

204126 

13044 

795874 

5 

56 

211895 

12810 

999942 

4 

211953 

12814 

788047 

4 

57 

219581 

12587 

999940 

04 

219641 

12590 

780359 

3 

58 

227134 

12372 

9999.38 

04 

227195 

12376 

772805 

2 

59! 

234557 

12164 

999936 

04 

234621 

12168 

765379 

1 

60! 

241855 

11963 

999934 

04 

241921 

11967 

758079 

0 

J. 

Cosine  | 

Sine   !   1 

Cotang. 

..      1 

Tang.   i  M.  | 

8y  Dogrees. 


SINES  AND  TANGENTS.  (I  Degree. J 

10 

M. 

Sine 

D. 

Cosine   |  D. 

Tang. 

D 

Cotnns.   I   1 

~0^ 

8.241855 

11963 

9.999934 

04 

8.241921 

11967 

11.7580791 

60 

1 

249033 

11768 

999932 

04 

249102 

11772 

750898' 

59 

2 

256094 

11.^80 

999929 

04 

256165 

11584 

743835 

58 

3 

263042 

11398 

999927 

04 

263115 

11402 

736885 

57 

4 

269881 

11221 

999925 

04 

269956 

11225 

730044 

56 

5 

276614 

11050 

999922 

04 

276691 

11054 

723309 

55 

6 

283243 

10883 

999920 

04 

283323 

10887 

716677 

54 

7 

289773 

10721 

999918 

04 

289856 

10726 

710144 

53 

8 

296207 

10565 

999915 

04 

296292 

10570 

703708 

52 

9 

302546 

10413 

999913 

04 

302634 

10418 

697366 

51 

10 

11 

308794 
8.314954 

10266 

999910 
9.999907 

04 
04 

308884 

10270 

691116 

50 
49 

10122 

8.315046 

10126 

11.684954 

12 

321027 

9982 

999905 

04 

321122 

9987 

678878 

48 

13 

327016 

9847 

999902 

04 

327114 

9851 

672886 

47 

14 

332924 

9714 

999899 

05 

333025 

9719 

666975 

46 

15 

338753 

9586 

999897 

05 

338S56 

9590 

661  M4 

45 

16 

3^14504 

9460 

999894 

05 

344610 

9465 

655390 

44 

17 

350181 

9338 

999891 

05 

350289 

9343 

649711 

43 

18 

355783 

9219 

999888 

05 

3.55895 

9224 

644105 

42 

19 

361315 

9103 

999835 

05 

361430 

9108 

638570 

41 

20 
21 

366777 

8990 
8880 

999882 

05 
05 

366895 

8995 

633105 
11.627708 

40 
39 

8.372171 

9.999879 

8.372292 

8885 

22 

377499 

8772 

999876 

05 

377622 

8777 

622378 

38 

23 

382762 

8667 

999873 

05 

382889 

8672 

617111 

37 

24 

387962 

8564 

999870 

05 

388092 

8570 

611908 

36 

25 

393101 

8464 

999867 

05 

393234 

8470 

606766 

35 

26 

398179 

8366 

999864 

05 

398315 

8371 

601685 

34 

27 

403199 

8271 

999861 

05 

403338 

8276 

596662 

33 

28 

408161 

8177 

999858 

05 

408304 

8182 

591606 

32 

29 

413068 

8086 

999854 

05 

413213 

8091 

586787 

31 

30 
31 

417919 
8.422717 

7996 

999851 

06 
06 

418068 

8002 

581932 
11.577131 

30 
29 

7909 

9.999848 

8.422869 

7914 

32 

427462 

7823 

999844 

06 

427618 

7830 

572332 

28 

33 

432156 

7740 

999841 

06 

432315 

7745 

.5676sr) 

27 

34 

436800 

7657 

999838 

06 

436962 

7663 

563038 

26 

35 

441394 

7577 

999834 

06 

441560 

7583 

558410 

25 

36 

445941 

7499 

999831 

06 

446110 

7505 

553890 

24 

37 

450440 

7422 

999827 

06 

450613 

7428 

5493 87 

23 

38 

454893 

7346 

999823 

06 

455070 

7352 

544930 

22 

39 

459301 

7273 

999820 

06 

459481 

7279 

540519 

21 

40 
41 

463665 

7200 

999816 
9.999812 

06 
06 

463849 
8.468172 

7206 

536151 
11.531828 

20 
19 

8.467985 

7129 

7135 

42 

472263 

7060 

999809 

06 

472454 

7066 

527546 

18 

43 

476498 

6991 

999805 

06 

476693 

6998 

523307 

17 

44 

480693 

6924 

999801 

06 

480892 

6931 

519108 

16 

45 

484848 

6859 

999797 

07 

485050 

6865 

514950 

15 

46 

488963 

6794 

999793 

07 

489170 

6801 

510830 

14 

47 

493040 

6731 

999790 

07 

493250 

6738 

506750 

13 

48 

497078 

6669 

999788 

07 

497293 

6676 

502707 

12 

49 

501080 

6608 

999782 

07 

501298 

6615 

498702 

11 

50 

505045 

6548 

999778 

07 

505267 

6555 

494733 

10 

51 

8.508974 

6489 

9.999774 

07 

8.509200 

6496 

11.490800 

9 

52 

512867 

6431 

999769 

07 

513098 

6439 

486902 

8 

53 

516726 

6375 

999765 

07 

516961 

6382 

483039 

7 

54 

520551 

6319 

999761 

07 

520790 

6326 

479210 

6 

55 

524343 

6264 

999757 

07 

524586 

6272 

475414 

5 

56 

528102 

6211 

999753 

07 

528349 

6218 

471651 

4 

57 

531828 

6158 

999748 

07 

532080 

6165 

467920 

3 

58 

535523 

6106 

999744 

07 

535779 

6113 

464221 

2 

59 

5.39186 

6055 

999740 

07 

539447 

6062 

460553 

I 

60 

.542819 

6004 

999735 

07 

543084 

6012 

456916 

0 

Zi 

Cosine 

1   Sine   1 

Cotang. 

1 

Tan?    |M.  1 

88  Degrees. 


20 

(2  Degrees.)  a 

TABLE  OF  LOGARITHMIC 

"m" 

1   Sine 

D. 

»;osiiie   1  D. 

1   T;in?. 

1   D. 

Oiiansr.   |   1 

^ 

8.M2819 

6004 

9.999735 

07 

8.543084 

6012 

ll  1.456916 

00 

1 

546422 

5955 

999731 

07 

546691 

5962 

453309 

59 

2 

549995 

5906 

999726 

07 

550268 

5914 

449732 

58 

3 

553539 

5858 

999722 

08 

553817 

6866 

446183 

57 

4 

557054 

5811 

999717 

08 

657336 

6819 

442664 

66 

5 

560540 

5765 

999713 

08 

560828 

5773 

439172 

65 

6 

563999 

5719 

999708 

08 

564291 

5727 

435709 

54 

7 

567431 

5674 

999704 

08 

567727 

6682 

432273 

53 

8 

570836 

5630 

999699 

08 

671137 

66.38 

428863 

62 

9 

574214 

5587 

999694 

08 

574520 

5595 

426480 

51 

10 
11 

577566 
8.580892 

5544 

999689 

08 
08 

577877 

6552 

422123 

50 
49 

5502 

9.999685 

8.581208 

6510 

11.418792 

12 

584193 

5460 

999680 

08 

584514 

5468 

416486 

48 

13 

587469 

5419 

999675 

08 

587795 

6427 

412205 

47 

14 

590721 

5379 

999670 

08 

591051 

6387 

408949 

46 

15 

593948 

5339 

999665 

08 

594283 

6347 

405717 

46 

16 

597152 

5300 

999660 

08 

697492 

6308 

402508 

44 

17 

600332 

5261 

999655 

08 

600677 

5270 

399323 

43 

18 

603489 

5223 

999650 

08 

603839 

5232 

396161 

42 

19 

606623 

5186 

999645 

09 

606978 

5194 

393022 

41 

20 

21 

609734 
8.612823 

5149 

999640 
9.999035 

09 
09 

610094 
8.613189 

5158 

389906 

40 
39 

5112 

5121 

11.386811 

22 

615891 

5076 

999629 

09 

616262 

5085 

383738 

38 

23 

618937 

5041 

999624 

09 

619313 

5050 

380687 

37 

24 

621962 

5006 

999619 

09 

622343 

5016 

377657 

36 

25 

624965 

4972 

999G14 

09 

625352 

4981 

374648 

36 

26 

627948 

4938 

999608 

09 

628340 

4947 

371660 

34 

27 

630911 

4904 

999603 

09 

631308 

4913 

368692 

33 

28 

633854 

4871 

999597 

09 

634256 

4880 

365744 

32 

29 

636776 

4839 

999592 

09 

637184 

4848 

362816 

31 

30 
31 

639080 
8.642563 

4806 

999586 

09 

09 

640093 

4816 

359907 
11.357018 

30 

29 

4775 

9.999581 

8.642982 

4784 

32 

645428 

4743 

999575 

09 

645853 

4753 

354147 

28 

33 

648274 

4712 

999570 

09 

648704 

4722 

351290 

27 

34 

601102 

4682 

999564 

09 

6515.37 

4691 

348463 

26 

35 

653911 

4652 

999558 

10 

654352 

4661 

345648 

25 

36 

656702 

4622 

999553 

10 

657149 

4631 

34285] 

24 

37 

659475 

4592 

999547 

10 

659928 

4602 

340072 

23 

38 

662230 

4563 

999541 

10 

662689 

4573 

337311 

22 

39 

664968 

4535 

999535 

10 

665433 

4544 

334567 

21 

40 

667689 

4506 

999529 

10 

668160 

4626 

331840 

20 

41 

8.670393 

4479 

9.999524 

10 

a. 670870 

4488 

11.329130 

19 

42 

673080 

4451 

999518 

10 

673563 

4461 

326437 

18 

43 

675751 

4424 

999512 

10 

676239 

4434 

323761 

17 

44 

678405 

4397 

999506 

10 

678900 

4417 

321100 

16 

45 

681043 

4370 

999500 

10 

681544 

4380 

318456 

15 

46 

683665 

4344 

9>99493 

10 

684172 

4354 

315828 

14 

47 

686272 

4318 

999487 

10 

686784 

4328 

313216 

13 

48 

688863 

4292 

999481 

10 

689381 

4303 

310619 

12 

49 

691438 

4267 

999475 

10 

691963 

4277 

308037 

11 

50 
51 

693998 
8.696543 

4242 

999469 
9.999463 

10 
11 

694529 
8.697081 

4252 

305471 

10 
9 

4217 

4228 

11.302919 

52 

699073 

4192 

999456 

11 

699617 

4203 

300383 

8 

63 

701589 

4168 

999450 

11 

702139 

4179 

297861 

7 

54 

704090 

4144 

999443 

11 

704646 

4156 

295354 

6 

55 

706577 

4121 

999437 

11 

707140 

4132 

292860 

5 

56 

709049 

4097 

999431 

11 

709618 

4108 

290382 

4 

57 

711507 

4074 

999424 

11 

712083 

4085 

287917 

3 

58 

713952 

4051 

999418 

11 

714534 

4062 

285465 

2 

59 

716383 

4029 

999411 

11 

716972 

4040 

283028 

1 

60 

718800 

4006 

999404 

11 

719396 

4017 

280ri04 

0 

n 

(Josiiie  *^ 

1 

Sme   1 

CotaiiL'.  1 

1 

Tang.    |M.  | 

87  Degrees 


SINES  A]:^D  TANGENTS.  ^^3  Degrees.^ 

21 

JI. 

.^ine   1   D.   1 

Cosine   |  D.  | 

Tane.   1 

D.   1   CoiaML'.   1   •' 

~o 

8.718800 

4006 

9.999404 

11 

8.719396 

4017 

11.2806041  60 

721204 

3984 

999398 

11 

721806 

3995 

278194  59 

2 

723595 

3962 

999391 

11 

724204 

3974 

275796, 

58 

3 

725972 

3941 

999384 

11 

726588 

3952 

273412 

.57 

4 

72S337 

3919 

999373 

11 

728959 

3930 

271041 

56 

5 

730688 

3898 

999371 

11 

731317 

3909 

268683 

55 

6 

733027 

3877 

999364 

12 

733663 

38S9 

266337 

54 

7 

735354 

3857 

999357 

12 

735996 

3868 

264004 

53 

8 

737667 

3836 

999350 

12 

738317 

3848 

261683 

52 

9 

739969 

3816 

999343 

12 

740626 

3827 

259374 

51 

10 
11 

742259 
8 . 744536 

3796 

999336 
9.999329 

12 
12 

742922 

3807 

3787 

257078 

50 
49 

3776 

8.745207 

11.254793 

12 

746802 

3756 

999322 

12 

747479 

3768 

2.52521 

48 

13 

749055 

3737 

999315 

12 

749740 

3749 

250260 

47 

14 

751297 

3717 

999308 

12 

751989 

3729 

248011 

40 

15 

7.53528 

3698 

999301 

12 

754227 

3710 

245773 

45 

16 

755747 

3679 

999294 

12 

756453 

3692 

243547 

44 

17 

757955 

3661 

999286 

12 

758668 

3673 

241332 

43 

18 

760151 

3642 

999279 

12 

760872 

3655 

239128 

42 

19 

762337 

3624 

999272 

12 

763065 

3636 

236935 

41 

20 
21 

764511 
8.766675 

3606 

999265 
9.999257 

12 
12 

765246 

3618 

234754 

40 
39 

3588 

8.767417 

3600 

11.232583 

22 

768828 

3570 

999250 

13 

769578 

3583 

230422 

38 

,,«> 

770970 

3553 

999242 

13 

771727 

3565 

228273 

37 

-<,4: 

773101 

3535 

999235 

13 

773866 

3548 

2261.34 

36 

2^ 

775223 

3518 

999227 

13 

77.5995 

3531 

224005 

35 

/O 

777333 

3501 

999220 

13 

778114 

3514 

221886 

34 

27 

779434 

3484 

999212 

13 

780222 

3497 

219778 

33 

28 

781524 

3467 

999205 

13 

782320 

3480 

217680 

32 

29 

783605 

3451 

999197 

13 

784408 

3464 

215592 

31 

30 
31 

785675 

3431 
3418 

999189 
9.999181 

13 
13 

786486 

8.788554 

3447 

213514 

30 

29 

8.787736 

3431 

11.211446 

32 

789787 

3402 

999174 

13 

790613 

3414 

209387 

28 

33 

791828 

3386 

999166 

13 

792662 

3399 

207338 

27 

34 

793859 

3370 

999  L5S 

13 

794701 

.3383 

205299 

26 

35 

795881 

3354 

999150 

13 

796731 

3368 

203269 

25 

36 

797894 

3339 

999142 

13 

798752 

3352 

201248 

24 

37 

■7[)9897 

3323 

999134 

13 

S00763 

3337 

199237 

23 

38 

S01S92 

3308 

999126 

13 

802765 

3322 

197235 

22 

39 

803876 

3293 

999118 

13 

804758 

3307 

195242 

21 

40 
41 

805852 
8.807819 

3278 

999110 

13 
13 

806742 
8.808717 

3292 
3278 

193258 

20 
19 

3263 

9.999102 

11.191283 

42 

809777 

3249 

999094 

14 

810683 

3262 

189317 

18 

43 

811726 

3234 

999086 

14 

812641 

3248 

187359 

17 

44 

81 3667 

3219 

999077 

14 

814589 

3233 

185411 

16 

45 

815599 

3205 

999069 

14 

816529 

3219 

183471 

15 

46 

817522 

3191 

999061 

14 

818461 

3205 

181539 

14 

47 

819436 

3177 

999053 

14 

820384 

3191 

179616 

13 

48 

821343 

3163 

999044 

14 

822298 

3177 

177702 

12 

49 

823240 

3149 

999036 

14 

824205 

3163 

175795 

11 

50 
51 

825130 
8.827011 

3135 

999027 
9.999019 

14 

826103 

3150 
3136 

173897 

10 
9 

3122 

14 

8.827992 

1 1.172008 

52 

828884 

3108 

999010 

14 

829374 

3123 

170126 

8 

53 

830749 

3095 

999002 

14 

831748 

3110 

168252 

7 

54 

832607 

3082 

998993 

14 

833613 

3096 

166387 

6 

55 

834456 

3069 

998984 

14 

835471 

3083 

1 64529 

5 

56 

836297 

3056 

998976 

14 

837321 

3070 

162679 

4 

57 

838130 

1  3043 

998967 

15 

839163 

3057 

160837 

3 

58 

839956 

3030 

998958 

15 

840998 

3045 

159002 

2 

59 

841774 

3017 

998950 

15 

842825 

3032 

1W175 

1 

60 

843585 

3000 

998941 

15 

844644 

3019 

155356 

0 

Cmuti       1 

Sine    j 

Cotang. 

Ta.)8.   (  M.  1 

86  liPKrees 

14 


22 

r 

4  Degrees.)  a 

TABLE  OF  LOGARITUMIC 

"m" 

Sine 

1  D. 

Cosine   |  D. 

Tang.   1 

D   1 

Cotang.  \         \ 

0 

8.843585 

3005 

9.998941 

15 

8.844644 

3019 

11.155356 

■60~ 

I 

845387 

2992 

998932 

15 

846455 

3007 

153545 

50 

2 

847183 

2980 

998923 

15 

848260 

2905 

161740 

58 

3 

848971 

2967 

998914 

15 

850057 

2982 

149943 

57 

4 

85075 1 

2955 

998905 

15 

851846 

2970 

1481.54 

56 

5 

852525 

2943 

998896 

15 

853628 

2958 

146372 

55 

n 

854291 

2931 

998887 

15 

855403 

2946 

144597 

54 

7 

856049 

2919 

998878 

15 

857171 

2935 

142829 

53 

8 

857801 

2907 

998809 

15 

8.58932 

2923 

141068 

52 

9 

859546 

2896 

998860 

15 

860686 

2911 

139314 

51 

10 
11 

86 1283 
8.863014 

288  i 

998851 

15 

862433 

2900 

2888 

137567 
11.135827 

50 
49 

2878 

9.998841 

15 

8.864173 

12 

86473S 

2861 

998832 

15 

865906 

2877 

134094 

48 

13 

866455 

2850 

998823 

16 

867632 

2866 

132368 

47 

14 

868165 

2839 

998813 

16 

869351 

2854 

] 30649 

46 

15 

S69868 

2828 

998804 

16 

871064 

2843 

12893G 

45 

Ifi 

871565 

2817 

998795 

16 

872770 

2832 

127230 

44 

17 

873255 

2806 

998785 

16 

874469 

2821 

125531 

43 

18 

874938 

2795 

998776 

16 

876162 

2811 

123838 

42 

19 

876615 

2786 

998766 

16 

877849 

2800 

1221 ->1 

41 

20 
21 

878285 

2773 

998757 
9.998747 

16 
16 

879529 

2789 

120471 

40 
39 

8.879949 

2763 

8.881202 

2779 

11.118798 

22 

881607 

2752 

998738 

16 

882869 

2768 

117131 

38 

23 

883258 

2742 

998728 

16 

884530 

2758 

115470 

37 

24 

884903 

2731 

998718 

16 

886185 

2747 

113815 

36 

25 

886542 

2721 

998708 

16 

887833 

2737 

112167 

35 

26 

388174 

2711 

998699 

16 

889476 

2727 

110.524 

34 

27  j 

889801 

2700 

998689 

16 

891112 

2717 

108888 

33 

28  i 

891421 

2690 

998679 

16 

892742 

2707 

107258 

32 

29 

S93035 

2680 

998669 

17 

894366 

2097 

105634 

31 

30 
31 

894643 

2670 
2660 

998659 

17 

17 

895984 

2687 

104016 

30 
29 

8.896246 

9.998649 

8.897590 

2677 

11.103404 

32 

897842 

2651 

99S639 

17 

899203 

2667 

100797 

28 

33 

899432 

2641 

998629 

17 

900803 

2658 

099197 

27 

34 

901017 

2631 

998619 

17 

902398 

2648 

097602 

26 

35 

902596 

2622 

998609 

17 

903987 

2638 

096013 

25 

36 

904169 

2612 

998599 

17 

90.5570 

2629 

094430 

24 

37 

905730 

2603 

998.589 

17 

907147 

2620 

092853 

23 

38 

907297 

2593 

998578 

17 

908719 

2610 

091281 

22 

39 

908853 

2584 

998568 

17 

910285 

2601 

089715 

21 

40 

41 

910404 

2575 

998558 
9.998.548 

17 
17 

911846 

2592 

088154 

20 
19 

8.911949 

2566 

8.913401 

2583 

11.086.599 

42 

913488 

255G 

998.537 

17 

914951 

2574 

C85049 

18 

43 

9150--i2 

2547 

998527 

17 

916495 

2565 

083505 

17 

44 

916.550 

2538 

998516 

18 

918034 

2556 

081966 

16 

45 

918073 

2529 

998506 

18 

919568 

2547 

080432 

15 

46 

919591 

2520 

998495 

18 

921096 

2538 

078904 

14 

47 

921103 

2512 

998485 

18 

922619 

2530 

077381 

13 

48 

922610 
924112 

2503 

998474 

18 

924136 

2.521 

075S64 

12 

49 

2494 

998464 

18 

925649 

2512 

074351 

11 

50 
51 

925609 
8.927100 

2486 
i  2477 

998453 
9.998442 

18 
18 

927156 

2503 

072844 

10 
9 

8.928658 

2495 

11.071342 

62 

N 928587 

1  2469 

998431 

18 

930155 

2486 

069845 

8 

53 

93006S 

;  2460 

998421 

18 

931647 

2478 

068353 

7 

54 

931544 

:  2452 

998410 

18 

933134 

2470 

066866 

6 

55 

933015 

2443 

998399 

18 

934616 

2461 

065384 

5 

56 

934481 

2435 

998388 

18 

936093 

2453 

063907 

4 

57 

935942 

2427 

998377 

18 

937565 

2445 

062435 

3 

58 

937398 

2419 

998366 

18 

939032 

2437 

060968 

2 

59 

938850 

2411 

998355 

18 

940494 

2430 

059506 

1 

60 

940296 

1  2403 

998344 

18 

941952 

2421 

058048 

_o^ 

Cosine 

1 

1   ^'"^   1 

1  Cotang. 

1   Tang.   1  M.  1 

S.5  D'-tsroes 


SINES  AND  TANGEN-bs.  (5  Degrees. 

) 

23 

M 

1   Sine   1   D. 

1   Cosine   |  D. 

i   Tang. 

1   D. 

\     Cotii.ia.   j   1 

"o" 

8 . 940296 

24  J3 

9.998344 

19 

8.941952 

2421 

11.058048 

60 

1 

94173S 

2394 

998333 

19 

943401 

2413 

056596 

69 

2 

943174 

2387 

998322 

19 

944852 

2405 

055148 

58 

3 

944606 

2379 

998311 

19 

946295 

2397 

053705 

57 

4 

946034 

2371 

998300 

19 

947734 

2390 

052266 

56 

fi 

947456 

2363 

998289 

19 

949168 

2382 

0.50832 

55 

r. 

948874 

2355 

998277 

19 

950597 

2374 

049403 

54 

V 

950287 

2348 

998260 

19 

952021 

2366 

047979 

53 

^ 

951696 

2340 

998255 

19 

953441 

2360 

046559 

52 

c 

953100 

2332 

998243 

19 

954856 

2.351 

045144 

51 

10 
ll" 

954499 
8.955894 

2325 

998232 
9.998220 

19 
19 

956267 
8.957674 

2344 

043733 

50 
49 

2317 

2337 

11.042326 

12 

957284 

2310 

998209 

19 

959075 

2329 

040925 

48 

k; 

958670 

2302 

998197 

19 

960473 

2323 

039527 

47 

14 

960052 

2295 

998186 

19 

961866 

2314 

038134 

46 

15 

961429 

2288 

998174 

19 

963255 

2307 

036745 

45 

16 

962801 

2280 

998163 

19 

964639 

2300 

035361 

44 

17 

964170 

2273 

998151 

19 

966019 

2293 

033981 

43 

18 

965534 

2266 

998139 

20 

967394 

2286 

032606 

42 

10 

966893 

2259 

998128 

20 

968766 

2279 

031234 

41 

20 

21 

968249 

2252 

998116 
9.998104 

20 

20 

970133 

2271 

029867 

40 
39 

8.969600 

2244 

8.971496 

2265 

11.028504 

22 

970947 

2238 

998092 

20 

972855 

2257 

027145 

38 

23 

972289 

2231 

998080 

20 

974209 

2251 

025791 

37 

24 

973628 

2224 

998068 

20 

975560 

2244 

024440 

36 

25 

974962 

2217 

998056 

20 

976906 

2237 

023094 

35 

26 

976293 

2210 

998044 

20 

978248 

2230 

021752 

34 

27 

977819 

2203 

993032 

20 

979586 

2223 

020414 

33 

28 

978941 

2197 

998020 

20 

980921 

2217 

019079 

32 

29 

930259 

2190 

998008 

20 

982251 

2210 

017749 

31 

30 
31 

98 1573 
8 . 982883 

2183 

997996 
9.997984 

20 
20 

983577 

2204 

016423 

30 
29 

2177 

8.984899 

2197 

11.015101 

32 

984189 

2170 

997972 

20 

986217 

2191 

013783 

28 

33 

985491 

2163 

997959 

20 

987532 

2184 

012468 

27 

J  34 

986789 

21.57 

997947 

20 

988842 

2178 

0111.58 

26 

35 

988083 

2150 

997935 

21 

990149 

2171 

009851 

25 

3ri 

989374 

2144 

997922 

21 

991451 

2165 

008549 

24 

37 

990660 

21.38 

997910 

21 

992750 

21.58 

007250 

23 

33 

991943 

2131 

997897 

21 

994045 

2152 

005955 

22 

»39 

993222 

2125 

997885 

21 

995337 

2146 

004663 

21 

40 
41 

934497 

8.995768 

2119 

997872 

21 
21 

996024 

2140 

003376 

20 
19 

2112 

9.997860 

8.997908 

2134 

11.002092 

42 

997036 

2106 

997847 

21 

999188 

2127 

000812 

18 

43 

44 

998299 

2100 

997835 

21 

9.000465 

2121 

10.999535 

17 

999560 

2094 

997822 

21 

001738 

2115 

998262 

16 

45 

9.000816 

2087 

997809 

21 

003007 

2109 

996993 

15 

46 

002069 

2082 

997797 

21 

004272 

2103 

995728 

14 

47 

003318 

2078 

997784  21  i 

005534 

2097 

994466 

13 

48 

004563 

2070 

9977711 

21 

006792 

2091 

993208 

12 

49 

005805 

2064 

997758 

21 

008047 

2085 

9919.53 

11 

50 

51 

007044 
9.008278 

2053 

997745I 

21 

21 

009298 
9.010546 

2080 

990702 

10 
9 

2052 

9.997732 

2074 

10.989454J 

52 

0095101 

2046 

997719 

21 

011790 

2068 

9882101 

8 

53 

010737 

2040 

997706 

21 

013031 

2062 

986969; 

7 

54 

0119621 

2034 

997693'  22  ' 

014268 

2056 

985732 

6 

55 

013182! 

2029 

997680|  22 

015502 

2051 

934498' 

5 

56 

0144001 

2023 

997667|  22 

016732 

2045 

983268 

^ 

57 

015613! 

2017 

997654!  22 

017959 

2040 

982041 

3 

58 

016824 

2012 

997641 i  22 

019183 

2033 

980817 

2 

59 

018031 

2006 

997628; 22 

020403 

2028 

979597! 

1 

no 

019235 

2000 

997614  til 

021620 

2023 

9783801 

0 

_i 

Cisine   1       1 

Sine   1    1 

Cotang. 

1 

Tang.   jM  | 

b4Uegrees. 


24 


[6  DeL^rcos.)      a  table  of  logarithmic 


il 

Sine 

D. 

Cosine   !  L). 

Tang.   1 

D. 

Cotang.   1   1 

"o" 

9.019235 

2000 

9.997614 

22 

9.021620 

2023 

10.978.380 

60 

1 

0204;35 

1995 

997601 

22  1 

022834 

2017 

977166 

59 

2 

021632 

1989 

997588 

22  1 

024044 

2011 

975956 

58 

3 

022825 

1984 

997574 

22 

025251 

2006 

974749 

57 
56 

4 

024016 

1978 

997561 

22 

026455 

2000 

973545 

r-i 

025203 

1973 

997547 

22 

027655 

1995 

972345 

55  ! 

f) 

026386 

1967 

9975.34 

23 

028852 

1990 

971148 

54  • 

7 

027567 

1962 

997520 

23 

030046 

1985 

9699.54 

53  ) 

8 

028744 

1957 

997507 

23 

():^i2'i'- 

1979 

968763 

52 

y 

029918 

1951 

997493 

23 

032425 

1974 

967575 

51 

10 

OSrjHb 
M.v'i'^x57 

1947 
194] 

9<74S0 
0.997466 

n 

033609 
9.034791 

1959 

966391 
10.965209 

50 
49 

ill 

1964 

|12 

033421 

1936 

997452 

^3 

035969 

1958 

964031 

48 

-^ 

034582 

1930 

997439 

23 

0.37144 

1953 

962856 

47 

14 

035741 

1925 

997425 

23 

038316 

1948 

961684 

46 

15 

036896 

1920 

997411 

23  ; 

039485 

1943 

960515 

45 

16 

038048 

1915 

997397 

23 

040651 

1938 

959349 

44 

17 

039197 

1910 

997383 

23 

041813 

1933 

958187 

43 

18 

040342 

1905 

997369 

23 

042973 

1928 

957027 

42 

19 

041485 

1899 

997355 

23 

044130 

1923 

955870 

41 

20 

042625 

1894 

997341 

23 

045284 

1918 

9o47l6 

40 

21 

9.043762 

.389 

9.997327 

24 

9.046434 

1913 

10.953566 

39 

22 

044895 

1884 

997313 

24 

047582 

1908 

952418 

38 

23 

046026 

1879 

997299 

24 

048727 

1903 

951273 

37 

24 

047154 

1875 

997285 

24 

049869 

1898 

950131 

36 

25 

048279 

1870 

997271 

24 

051008 

1893 

948992 

35 

26 

049400 

1865 

997257 

24 

052144 

1889 

947856 

34 

27 

050519 

1860 

997242 

24 

053277 

1884 

946723 

3:1 

28 

051635 

1855 

997228 

24 

054407 

1879 

945593 

:v^ 

29 

052749 

1850 

997214 

24 

055535 

1874 

944465 

31 

30 
31 

053859 

1845 

997199 
9.997185 

24 
24 

056659 
9.0.57781 

1870 

943341 

30 
29 

054966 

1841 

1865 

10.942219 

32 

056071 

1836 

997170 

24 

058900 

1869 

941100 

28 

33 

057172 

1831 

997156 

24 

060016 

1855 

939984 

27 

34 

058271 

1827 

997141 

24 

061130 

1851 

938870 

26 

35 

059367 

1822 

997127 

24 

062240 

1846 

937760 

25 

36 

060460 

1817 

997112 

24 

063348 

1842 

936652 

24 

37 

061551 

1813 

997098 

24 

064453 

1837 

935547 

23 

38 

062639 

1808 

997083 

25 

065556 

1833 

934444 

22 

39 

063724 

1804 

997068 

25 

066655 

1828 

933345 

21 

40 
41 

064806 
9.065885 

1799 

997053 

25 
25 

067752 

1824 

932248 

20 
19 

1794 

9.997039 

9.068846 

1819 

10.931154 

42 

066962 

1790 

997024 

25 

069938 

1815 

930062 

18 

43 

068036 

1786 

997009 

25 

071027 

1810 

928973 

17 

44 

069107 

1781 

996994 

25 

072il3 

1806 

927887 

16 

45 

070176 

1777 

996979 

25 

073197 

1802 

926803 

15 

46 

071242 

1772 

996964 

25 

074278 

1797 

925722 

14 

47 

072306 

1768 

996949 

25 

075356 

1793 

924644 

13 

48 

073366 

1763 

996934 

25 

076432 

1789 

923568 

12 

49 

074424 

1759 

996919 

25 

077505 

1784 

922495 

11 

50 
51 

075480 
9.076533 

1755 

996904 

25 
25 

078576 

1780 

921424 

10 
9 

1750 

9.996889 

9.079644 

1776 

10.920356 

52 

077583 

1746 

996874 

25 

080710 

1772 

919290 

8 

53 

078031 

1742 

996858 

25 

081773 

1767 

918227 

7 

54 

079676 

1738 

996843 

25 

082833 

1763 

917167 

6 

65 

080719 

1733 

996828 

25 

083891 

1759 

916109 

5 

56 

081759 

1729 

996812 

26 

084947 

1755 

915053 

4 

57 

08279/ 

1725 

996797 

26 

086000 

1751 

914000 

3 

58 

083832 

1721 

996782 

26 

087050 

1747 

912950 

2 

69 

084864 

1717 

996766 

26 

088098 

1743 

911902 

1 

60 

085894 

1713 

996751 

26 

089144 

1738 

9108.56 

0 

_J 

Cosine   1 

Sine   1 

Cotaiii.'. 

Tang    1  M.  | 

SINES  AND  TANGENTS 

.  (7  Degree;;.) 

25 

nn 

Sine   1 

n.  1 

Cosine   |  D.  | 

Tang.   1 

D.   1 

Cotang.   j    j 

0 

9.085894 

1713 

9.9967511 

26 

9.089144 

1738 

10.910850 

-60 

1 

086922 

1709 

9967351 

26 

090187 

1734 

909813 

59 

2 

087947 

1704 

996720 

26 

091228 

1730 

908772 

58 

3 

088970 

1700 

996704 

26 

092266 

1727 

907734 

57 

4 

089990 

1696 

996688 

26 

093302 

1722 

906698 

56 

5 

091008 

1692 

996673 

26 

094336 

1719 

905664 

bt 

6 

092024 

1688 

996657 

26 

095367 

1715 

904633 

54 

7 

093037 

1684 

996641 

26 

096395 

1711 

9036051 

53 

8 

094047 

1680 

9966251 

26 

097422 

1707 

902578 

52 

9 

095056 

1676  1 

996610 

26 

098446 

1703 

901554 

51 

10 
ll 

096062 
9.097065 

167.*^  1 
1668 

996594 
9.996578 

26 

27 

099468 
9.100487 

1699 

900532 
10.899513 

50 
49 

1695 

J2 

098066 

1665 

9965C2 

27 

101504 

1691 

898496 

48 

13 

099065 

1661 

996546 

27 

102519 

1687 

897481 

47 

14 

100062 

1657 

996530 

27 

103532 

1684 

896468 

46 

-5 

101056 

1653 

996514 

27 

104542 

1680 

895458 

45 

16 

102048 

1649 

996498 

27 

105550 

1676 

894450 

44 

17 

103037 

1645 

996482 

27 

106556 

1672 

893444 

43 

18 

104025 

1641 

996465 

27 

107559 

1669 

892441 

42 

19 

105010 

1638 

996449 

27 

108560 

1665 

891440 

41 

20 

21 

105992 

1634 
1630 

996433 

27 
27 

109559 

1661 

1658 

890441 

40 
39 

9.106973 

9.996417 

9.110556 

10.889444 

22 

107951 

1627 

996400 

27 

111551 

1654 

888449 

38 

23 

108927 

1623 

996384 

27 

112543 

1650 

887457 

37 

24 

109901 

1619 

996368 

27 

113533 

1646 

886467 

36 

25 

110873 

1616 

996351 

27 

114521 

1643 

885479 

35 

26 

111842 

1612 

996335 

27 

115507 

1639 

884493 

34 

27 

112809 

1608 

996318 

27 

116491 

1636 

883509 

33 

28 

113774 

1605 

996302 

28 

117472 

1632 

882528 

32 

29 

114737 

1601 

996285 

28 

118452 

1629 

881548 

31 

30 
31 

11.5698 

1597 
1594 

996269 
9.996252 

28 
28 

119429 

1625 
1622 

880571 

30 

29 

9.116656 

9.120404 

10.879596 

32 

117613 

1.590 

996235 

28 

121377 

1618 

878623 

28 

33 

118567 

1587 

996219 

28 

122348 

1615 

877652 

27 

34 

119519 

1583 

996202 

28 

123317 

1611 

876683 

26 

35 

120469 

1.580 

996185 

28 

124284 

1607 

875716 

25 

36 

121417 

1.576 

996168 

28 

125249 

1604 

874751 

24 

37 

122362 

1573 

996151 

28 

126211 

1601 

873789 

23 

38 

123306 

1569 

996134 

28 

127172 

1597 

872828 

22 

39 

124248 

1566 

996117 

28 

128130 

1594 

871870 

21 

40 
41 

125187 

1562 

996100 

28 
29 

129087 
9.130041 

1591 
1587 

870913 
10.869959 

20 
19 

9.126125 

1559 

9.996083 

42 

127060 

1556 

996066 

29 

130994 

1584 

869006 

18 

43 

127993 

1552 

996049 

29 

131944 

1581 

868056 

17 

44 

128925 

1549 

996032 

29 

132893 

1577 

867107 

16 

45 

129854 

1545 

996015 

29 

133839 

1574 

866161 

15 

46 

130781 

1542 

995998 

29 

134784 

1571 

8r,5216 

14 

47 

131706 

1539 

995980 

29 

135726 

1.567 

864274 

13 

48 

132630 

1535 

995963 

29 

136667 

1564 

863333 

12 

49 

133551 

1532 

995946 

29 

137605 

1561 

862395 

11 

50 
51 

134470 
9.135387 

1529 
1525 

995928 

29 
29 

138542 

1558 
1555 

861458 

10 

9.995911 

9.139476 

10.860524 

9 

52 

136303 

1522 

995894 

29 

140409 

1551 

859591 

8 

53 

137216 

1519 

995876 

29 

141340 

1548 

858060 

7 

54 

138128 

1516 

995859 

29 

142269 

1545 

857731 

6 

55 

139037 

1512 

995841 

29 

143196 

1542 

856804 

5 

56 

139944 

1509 

995823 

29 

144121 

1539 

85.5879 

4 

57 

140850 

1506 

995806 

29 

145044 

1  1535 

854956 

3 

58 

141754 

1503 

995788 

29 

145966 

'  1532 

854034 

2 

59 

142655 

1  1500 

995771 

29 

146885 

I  1529 

853115 

1 

60 

143555 

1  1496 

995753 

29 

147803 

'  1.526 

852197 

0 

I      Cosine      j 


j    Cotang. 


Tang. 


82  Degrees. 


2(^ 

(6 

Degrees.;  a  • 

rABLE  OF  LOi 

>AR1TJ! 

MIC 

M. 

1    Sine 

1  D. 

Cosine   |  D. 

Tai,^. 

D. 

Col^hi:.   1 

^ 

I  9.143555 

1496 

9.995753 

30 

9.147803 

1526 

10. 8521971  60 

1 

1   144453 

1493 

995735 

30 

148718 

1523 

851282  59 

9 

145349 

1490 

995717 

30 

149632 

1520 

850368  58 

3 

146243 

1487 

995699 

30 

1.50544 

1517 

849456 

57 

4 

147136 

1484 

995681 

30 

151454 

1514 

848546 

56 

5 

148026 

1481 

995664 

30 

152363 

1511 

847637 

55 

C 

,   148915 

1478 

995646 

30 

153269 

1508 

846731 

54 

7 

149802 

1475 

995628 

30 

154174 

1505 

845826 

53 

8 

150686 

1472 

995610 

30 

1. 55077 

1502 

844923 

52 

9 

151569 

1469 

995591 

30 

155978 

1499 

844022 

21 

10 

152451 

1466 

995573 

30 

156877 

1496 

843123 

50 

11 

9  153330 

1463 

9.9955.55 

30 

9.157775 

1493 

10.842225 

49 

12 

154208 

1460 

995.537 

30 

158671 

1490 

841329 

48 

13 

155083 

1457 

995519 

30 

159565 

1487 

840435 

47 

14 

155957 

1454 

995501 

31 

160457 

1484 

839543 

46 

15 

156830 

1451 

995482 

31 

161347 

1481 

838653 

45 

16 

157700 

1448 

995464 

31 

162236 

1479 

837764 

44 

17 

158569 

1445 

99.5446 

31 

163123 

1476 

836877 

43 

18 

159435 

1442 

995427 

31 

164008 

1473 

835992 

42 

19 

160301 

1439 

99.5409 

31 

164892 

1470 

835108 

41 

20 

21 

161164 
9.162025 

1436 
1433 

995390 

31 
31 

165774 
9.166654 

1467 

834226 

40 
39 

9.995372 

1464 

10.833346 

22 

162885 

1430 

•  995353 

31 

167532 

1461 

832468 

38 

23 

163743 

1427 

99.5334 

31 

168409 

1458 

831591 

37 

24 

164600 

1424 

995316 

31 

1692S4 

1455 

830716 

36 

25 

165454 

1422 

99.5297 

31 

170157 

1453 

829843 

35 

26 

166307 

1419 

995278 

31 

171029 

1450 

828971 

34 

27 

167159 

1416 

995260 

31 

171899 

1447 

828101 

33 

28 

168008 

1413 

995241 

32 

172767 

1444 

S27233 

32 

29 

168856 

1410 

995222 

32 

173634 

1442 

826306 

31 

30 

169702 

1407 

995203 

32 

174499 

i439 

825501 

30 

31 

9.170547 

1405 

9.995184 

32 

9.175362 

1436 

10.824638 

29 

32 

171389 

1402 

995165 

32 

176224 

1433 

823770 

28 

33 

172230 

1399 

995146 

32 

177084 

1431 

822916 

27 

34 

173070 

1396 

995127 

32 

177942 

1428 

822058 

26 

35 

173908 

1394 

995108 

32 

178799 

1425 

821201 

25 

36 

174744 

1391 

995089 

32 

1796.55 

1423 

820345 

24 

37 

17.5578 

1388 

995070 

32 

180508 

1420 

819492 

23 

38 

176411 

1386 

99.5051 

32 

181360 

1417 

818640 

22 

39 

177242 

1383 

995032 

32 

182211 

1415 

817789 

21 

40 
41 

178072 

1380 
1377 

995013 
9.994993 

32 
32 

1830.59 

1412 

816941 

20 
19 

9.178900 

9.183907 

1409 

10.816093 

42 

179726 

1374 

994974 

32 

184752 

1407 

815248 

18 

43 

180,551 

1372 

994955 

32 

185597 

1404 

814^103 

17 

44 

181374 

1369 

994935 

32 

186439 

1402 

813561 

16 

45 

182196 

1366 

994916 

33 

187280 

1399 

812720 

15 

46 

183016 

1364 

994896 

33 

188120 

1396 

811880 

14 

47 

183834 

1361 

994877 

33 

188958 

1393 

811042 

13 

48 

184651 

1359 

994857 

33 

189794 

1391 

810206 

12 

49 

185466 

1356 

994838 

33 

190629 

1389 

809371 

11 

50 
51 

186280 

1353 
1351 

994818 

33 
33 

191462 
9.192294 

1386 
1.384 

808538 
10.807706 

10 
9 

9.187092 

9.994798 

52 

187903 

1348 

994779 

33 

193124 

1381 

80C876 

8 

53 

188712 

1346 

994759 

33 

1939.53 

1379 

806047 

7 

54 

189519 

1343 

994739 

33 

194780 

1376 

805220 

6 

55 

190325 

1341 

994719 

33 

195606 

1374 

804394 

5 

56 

191130 

1338 

994700 

33 

1964.30 

1371 

803570 

4 

57 

191933 

1336 

994680 

33 

197253 

1369 

802747 

3 

58 

192734 

1333 

994660 

33 

198074 

1366 

801926 

2 

59 

193534 

1330 

994640 

33 

198894 

1364 

801106 

1 

60 

194332 

1328 

994620 

33 

199713 

1361 

800287 

__0 

Cosine 

Sin.    j 

Cninwj 

Tang.   1  M. 

^1  Degrees. 


SINES  AIND  TAA'GF.NTS.   (^9  Degret.-:. 

; 

27 

M. 

Sine 

D. 

Cosine   |  D 

'J'iiiig. 

T).  _ 

Coiaiig.   1 

~o" 

19.194332 

1328 

9.994620 

33 

9.199713 

1361 

10.800287.60 

1 

195129 

1326 

994600 

33 

200529 

1359 

799471 

59 

2 

195925 

1323 

994580 

33 

201345 

1356 

798655 

5S 

3 

196719 

1321 

994560 

34 

202159 

1354 

797841 

57 

4 

197511 

1318 

994540 

34 

202971 

1352 

797029 

56 

5 

198302 

1316 

994519 

34 

203782 

1349 

798218 

55 

6 

199091 

1313 

99M99 

34 

204592 

1347 

795408 

54 

7 

I99S79 

1311 

994479 

34 

205400 

1345 

794600 

53 

8 

200666 

1308 

994459 

34 

206207 

1342 

793793 

52 

9 

201451 

1306 

994-138 

34 

207013 

1340 

792987 

51 

10 

11 

202234 

1304 
1301 

994418 
9.994397 

34 
34 

207817 

1338 

792183 

50 

49 

9.203017 

9.208619 

1335 

10.791381 

12 

203797 

1299 

994377 

34 

209420 

1333 

790580 

48 

13 

204577 

1296 

994357 

34 

210220 

1331 

789780 

47 

14 

205354 

1294 

994336 

34 

211018 

1328 

788982 

46 

15 

206131 

1292 

994316 

34 

211815 

1326 

788185 

45 

16 

206906 

1289 

994295 

34 

212611 

1324 

7S73S9 

44 

17 

207679 

1287 

994274 

35 

213405 

1321 

786595 

43 

18 

208452 

1285 

994254 

35 

214198 

1319 

785802 

42 

19 

209222 

1282 

994233 

35 

214989 

1317 

785011 

41 

20 
21 

209992 
9.210760 

1280 

994212 

35 
35 

215780 
9.216568 

1315 

784220 

40 
39 

1278 

9.994191 

1312 

10.783432 

22 

211526 

1275 

994171 

35 

217356 

1310 

782644 

38 

23 

212291 

1273 

994150 

35 

218142 

1308 

7818.58 

37 

24 

213055 

1271 

994129 

35 

218926 

1305 

781074 

36 

25 

213818 

1268 

994108 

35 

219710 

1303 

780290 

35 

26 

214579 

1288 

994087 

35 

220492 

1301 

779.508 

34 

27 

215338 

1264 

994066 

35 

221272 

1299 

778728 

33 

28 

216097 

1261 

994045 

35 

222052 

1297 

777948 

32 

29 

2168.54 

1259 

994024 

35 

222830 

1294 

777170 

31 

30 
31 

217609 

1257 

994003 

35 
35 

22.3606 

1292 

776394 

30 

29 

9.218363 

1255 

9.993981 

9.224382 

1290 

10. 7756 IS 

32 

219116 

1253 

993960 

35 

225156 

1288 

774844 

28 

33 

219868 

1250 

993939 

35 

225929 

1286 

774071 

27 

34 

220618 

1248 

993918 

35 

226700 

1284 

773300 

26 

35 

221367 

1246 

993896 

36 

227471 

1281 

772529 

25 

36 

222115 

1244 

993875 

36 

228239 

1279 

771761 

24 

37 

222861 

1242 

993854 

36 

229007 

1277 

770993 

23 

38 

223006 

1239 

993832 

36 

229773 

1275 

770227 

22 

39 

224349 

1237 

993811 

36 

230539 

1273 

769481 

21 

40 
41 

225092 
9 . 225833 

1235 
12.33 

993789 
9 . 993768 

36 
36 

231302 

1271 

768698 

20 
19 

9.232065 

1209 

10.767935 

42 

226573 

1231 

993746 

36 

232826 

1267 

767174 

18 

43 

227311 

1228 

993725 

36 

233586 

1265 

706414 

17 

44 

228048 

1220 

993703 

36 

234345 

1262 

765855 

16 

45 

228784 

1224 

993681 

36 

235103 

1260 

764897 

15 

46 

229518 

1222 

993660 

36 

235859 

1258 

764141 

•t 

47 

230252 

1220 

993638 

36 

236614 

1256 

763386 

.3 

48 

230984 

1218 

993616 

36 

237368 

1254 

762632 

12 

49 

231714 

1216 

993594 

37 

238120 

1252 

761880 

11 

50 
51 

232441 

1214 
1212 

993572 

37 
37 

238872 
9.239622 

1250 

761128 
10.760378 

10 
9 

9.233172 

9.993550 

1248 

52 

233899 

1209 

993528 

37 

240371 

1246 

75982.0 

8 

53 

234625 

1207 

993508 

37 

241118 

12'14 

7.58882 

7 

54 

235349 

1205 

993484 

37 

24 1865 

1242 

758 1 35 

6 

55 

236073 

1203 

993462 

37 

242610 

1240 

757390 

5 

56 

236795 

1201 

993440 

37 

243354 

1238 

756646 

4 

57 

237515 

1199 

993418 

37 

244097 

1236 

755903 

3 

58 

238235 

1197 

993396 

37 

244839 

1234 

755181 

2 

59 

238953 

1195 

9933T4 

37 

245579 

1232 

7,54421 

1 

60 

239670 

1193 

993351 

37 

246319 

1230 

753681 

0 

,Ii 

Cosine 

Sine    j 

Cotai'ii. 

Tang.   |M.  1 

SO  Degrees 


28 

(10  D-r 

:c..)   A 

■JAHLK  or  LOGAIJITIIMIC 

M. 

Siiiu 

D.   ]   Cosine   1  D. 

1   TaiiR. 

1   D. 

1   Cotang.  1   1 

0 

9.239670 

1193 

9.993351 

37 

9.246319 

1230 

10.753681 

60 

1 

240386 

1191 

993329 

37 

247057 

1228 

752943 

59 

2 

241101 

1189 

993307 

37 

247794 

1226 

752206 

58 

3 

241814 

1187 

993285 

37 

248530 

1224 

751470 

57 

4 

242526 

1185 

993262 

37 

249264 

1222 

750736 

56 

5 

243237 

1183 

993240 

37 

249998 

1220 

750002 

55 

6 

243947 

1181 

993217 

38 

2507.30 

1218 

749270 

54 

7 

244656 

1179 

993195 

38 

251461 

1217 

748539 

53 

8 

245363 

1177 

993172 

38 

252191 

1215 

747809 

52 

9 

246069 

1175 

993149 

38 

2.52920 

1213 

747080 

51 

10 
11 

246775 
9.247478 

1173 
1171 

993127 

38 

38 

253648 

1211 

746352 

50 
49 

9.993104 

9.2.54374 

1209 

10.745626 

12 

248181 

1169 

993081 

38 

255100 

1207 

744900 

48 

13 

248883 

1167 

993059 

38 

255824 

1205 

744176 

47 

14 

249583 

1165 

993036 

38 

256.547 

1203 

743453 

46 

15 

250282 

1163 

993013 

38 

257269 

1201 

742731 

45 

16 

250980 

1161 

992990 

38 

257990 

1200 

742010 

44 

17 

251677 

1159 

992967 

38 

258710 

1198 

741290 

43 

18 

252373 

11.58 

992944 

38 

259429 

1196 

740571 

42 

19 

253007 

1156 

992921 

38 

260146 

1194 

7398.54 

41 

20 

21 

25376 1 
9.254453 

1154 
1152 

992898 
9.992875 

38 
38 

260863 

1192 
1190 

739137 

40 
39 

9.261578 

10.738422 

22 

255144 

1150 

992852 

38 

262292 

1189 

737708 

38 

23 

255834 

1148 

992829 

39 

263005 

1187 

736995 

37 

24 

256523 

1146 

992806 

39 

263717 

1185 

736283 

36 

25 

257211 

1144 

992783 

39 

264428 

1183 

735572 

35 

26 

257898 

1142 

992759 

39 

265138 

1181 

734862 

34 

27 

258583 

1141 

992736 

39 

265847 

1179 

7341.53 

33 

28 

25926S 

1139 

992713 

39 

'^66555 

1178 

733445 

32 

29 

2.59951 

1137 

992690 

39 

267261 

1176 

732739 

31 

30 

260633 

11.35 

992666 

39 

267967 

1174 

732033 

30 

31 

9.261314 

1133 

9.992643 

39 

9.268671 

1172 

10.731329 

29 

32 

201994 

1131 

992619 

39 

269375 

1170 

730625 

28 

33 

262673 

1130 

992596 

39 

270077 

1169 

729923 

27 

34 

263351 

1128 

992572 

39 

270779 

1167 

729221 

26 

35 

264027 

1126 

992549 

39 

271479 

1165 

728521 

25 

36 

264703 

1124 

992525 

39 

272178 

1164 

727822 

24 

37 

265377 

1122 

992501 

39 

272876 

1162 

727124 

23 

38 

26605 1 

1120 

992478 

40 

273573 

1160 

726427 

22 

39 

266723 

1119 

992454 

40 

274269 

1158 

725731 

21 

40 
41 

267395 
9.268065 

1117 

992430 
9.992406 

40 
40 

274964 
9.275658 

1157 

725036 

20 
19 

1115 

1155 

10.724342 

42 

268734 

1113 

992382 

40 

276351 

1153 

723649 

18 

13 

269402 

1111 

992359 

40 

277043 

1151 

722957 

17 

■1  , 

270069 

1110 

992335 

40 

277734 

1150 

722266 

]S 

Id 

270735 

1108 

992311 

40 

278424 

1148 

721576 

15 

46 

271400 

1106 

992287 

40 

279113 

1147 

720887 

14 

47 

272064 

1105 

992263 

40 

279801 

1145 

720199 

13 

48 

272726 

1103 

992239 

40 

280488 

1143 

719512 

12 

49 

273388 

1101 

992214 

40 

281174 

1141 

718826 

11 

50 
51 

274049 
9.274708 

1099 
1098 

992190 

40 
40 

281858 

1140 

718142 

JO 
9 

9.992166 

9.282542 

1138 

10.717458 

52 

275367 

1098 

992142 

40 

283225 

1136 

716775 

8 

53 

276024 

1094 

992117 

41 

283907 

1135 

716093 

7 

54 

276681 

1092 

992093 

41 

284588 

1133 

715412 

6 

55 

277337 

1091 

992069 '41 

285268 

1131 

7147.32 

5 

56 

277991 

1089 

992044 

41 

285947 

1130 

714053 

4 

57 

278644 

1087 

992020 

41 

286624 

1128 

713376 

3 

58 

279297 

1086 

991996 

41 

287301 

1126 

712699 

2 

59 

279948 

1084 

991971 

41 

287977 

1125 

712023 

1 

60 

280599 

1082 

991947 

41 

288652 

1123 

711348 

0 

Cosine  i 

]   Sine   1 

Clang,  1 

Tang.   1  M.  [ 

97  Degreei 


SINES  AND  TANGENTS.     (  1 1   Degrees. ) 


29 


M. 

1   Sine 

1   r>. 

1   Cnsiire   |  D. 

1   Tang. 

D. 

Co-ran?.   1   ) 

"o" 

9.280599 

1082 

9.991947 

41 

9.288652 

1123 

10.711348 

60 

1 

2812't8 

1081 

991922 

41 

289326 

1122 

710674 

59 

2 

281897 

1079 

991897 

41 

289999 

1120 

710001 

58 

3 

282544 

1077 

991873 

41 

290671 

1118 

709329 

67 

4 

283190 

1076 

991848 

41 

391342 

1117 

708658 

56 

5 

283836 

1074 

991823 

41 

292013 

1115 

707987 

55 

6 

284480 

1072 

991799 

41 

292682 

1114 

707318 

54 

7 

285124 

1071 

991774 

42 

293350 

1112 

706650 

53 

8 

285766 

1069 

991749 

42 

294017 

nil 

705983 

52 

9 

286408 

1067 

991724 

42 

294684 

1109 

705316 

51 

10 
11 

287048 
9.287687 

1066 

991699 
9.991674 

42 
42 

295349 

1107 

704651 

50 
49 

1064 

9.296013 

1106 

10.703987 

12 

288326 

1063 

991649 

42 

296677 

1104 

703323 

48 

13 

288964 

1061 

991624 

42 

297339 

1103 

702661 

47 

14 

289600 

1059 

991599 

42 

298001 

1101 

701999 

46 

15 

290236 

1058 

991574 

42 

298662 

1100 

701338 

45 

16 

290870 

1056 

991549 

42 

299322 

1098 

700678 

44 

17 

291504 

1054 

991524 

42 

299980 

1096 

700020 

43 

18 

292137 

1053 

991498 

42 

300638 

1095 

699362 

42 

19 

292768 

1051 

991473 

42 

301295 

1093 

698705 

41 

20 
21 

293399 
9.294029 

1050 

991448 
y. 99 1422 

42 
42 

301951 
9.302607 

1092 
1090 

698049 

40 
39 

1048 

10.697393 

22 

294658 

1046 

991397 

42 

303261 

1089 

696739 

38 

23 

295280 

1045 

991372 

43 

303914 

1087 

696086 

37 

24 

295913 

1043 

991346 

43 

304567 

1086 

695433 

36 

25 

296539 

1042 

991.321 

43 

305218 

1084 

694782 

35 

26 

297164 

1040 

991295 

43 

305869 

1083 

694131 

34 

27 

297788 

1039 

991270 

43 

306519 

1081 

693481 

33 

28 

298412 

1037 

991244 

43 

307168 

1080 

692832 

32 

2iJ 

299034 

1036 

991218 

43 

307815 

1078 

692185 

31 

30 

31 

299655 
9.300276 

1034 
1032 

991193 
9.991167 

43 
43 

308463 
9.309109 

1077 

691537 

30 

29 

1075 

10.690891 

32 

300895 

1031 

991141 

43 

309754 

1074 

690246 

28 

33 

301514 

1029 

991115 

43 

310398 

1073 

689602 

27 

34 

302132 

1028 

991090 

43 

811042 

1071 

688958 

26 

35 

302748 

1026 

991064 

43 

311685 

1070 

688315 

25 

36 

303364 

1025 

991038 

43 

312327 

1068 

687673 

24 

37 

303979 

1023 

991012 

43 

312967 

1067 

687033 

23 

38 

304593 

1022 

990986 

43 

313608 

1005 

686392 

22 

39 

305207 

1020 

990960 

43 

314247 

1064 

685753 

21 

40 
41 

305819 
9 . 306430 

1019 

990934 
9.990908 

44 
44 

314885 
9.315523 

1062 

685115 

20 
19 

1017 

1061 

10.684477 

42 

307041 

1016 

990882 

44 

316159 

1060 

683841 

18 

43 

307650 

1014 

990855 

44 

316795 

1058 

683205 

17 

44 

308259 

1013 

990829 

44 

317430 

1057 

682570 

16 

45 

308867 

1011 

990803 

44 

318064 

1055 

681936 

15 

46 

309474 

1010 

990777 

44 

318697 

1054 

681.303 

14 

47 

310080 

1008 

990750 

44 

319329 

1053 

680671 

13 

48 

310685 

1007 

990724 

44 

319961 

1051 

680039 

12 

49 

311289 

1005 

990697 

44 

320592 

10.50 

679408 

11 

50 
51 

311893 
9.312495 

1004 

990671 
9.990644 

44 
44 

321222 
9.321851 

1048 

678778 

10 
9 

1003 

1047 

10.678149 

52 

313097 

1001 

990618 

4-4 

322479 

1045 

677521 

8 

53 

313698 

1000 

990591 

44 

323106 

1044 

676894 

7 

54 

314297 

998 

990565  44 

323733 

1043 

676267 

6 

55 

314897 

997 

990538  44 

324358 

1041 

675642 

5 

56 

315495 

996 

990511  45 

324983 

1040 

'   675017 

4 

57 

316092 

994 

c)90485  45 

325607 

1039 

1   674393 

3 

58 

316689 

993 

990458  45 

326231 

1037 

I   673769 

2 

59 

1   317284 

991 

990431  45 

326853 

1036 

!   673147 

1 

60 

1   317879 

990 

990404  45 

327475 

1035 

'       672525  0 

1   Cosine 

'   Sine   1 

1   Cotaiii;. 

1   Tang.   1 

78  Degrees 


30 

(12  X)egrees.)  a 

TABLE  OP  LOGARITHMIC 

M. 

Sine 

!    i>- 

1   Cosine   1  D. 

1   Tang. 

1   D. 

1   Cotaiig.  i   1 

~o" 

9.317879 

990 

9.990404 

45 

9.327474 

1035 

10  672526 

60 

1 

318473 

988 

990378 

45 

328095 

1033 

671905 

69 

2 

319066 

987 

990351 

45 

328715 

1032 

671285 

58 

3 

4 

319658 

986 

990.324 

45 

329334 

1030 

670666 

57 

320249 

984 

990297 

45 

329953 

1029 

670047 

66 

*  5 

320840 

983 

990270 

45 

330570 

1028 

669430 

55 

6 

321430 

982 

990243 

45 

331187 

1026 

668813 

54 

7 

322019 

980 

990215 

45 

331803 

1025 

668197 

53 

8 

322C07 

979 

990188 

45 

332418 

1024 

667582 

62 

9 
10 

ll 

323194 

977 

990161 

45 

3330.33 

1023 

666967 

61 

323780 

976 

990134 
9.990107 

45 

46 

333646 

1021 

666354 

50 
49 

9.324366 

975 

9.334259 

1020 

10.665741 

12 

324950 

973 

990079 

46 

3.34871 

1019 

665129 

48 

13 

325534 

972 

990052 

46 

335482 

1017 

664618 

47 

14 

326117 

970 

990025 

46 

336093 

1016 

663907 

46 

15 

326700 

969 

989997 

46 

336702 

1015 

663298 

46 

J6 

327281 

968 

989970 

46 

337311 

1013 

662689 

44 

17 

327862 

966 

989942 

46 

337919 

1012 

662081 

43 

18 

328442 

965 

989915 

46 

338527 

1011 

661473 

42 

19 

329021 

964 

989887 

46 

339133 

1010 

660867 

41 

20 

21 

329599 

962 

989860 

46 
46 

339739 
9.340344 

1008 
1007 

660261 

40 
39 

9.330176 

961 

9.989832 

10.6.59656 

22 

330753 

960 

989804 

46 

340948 

1006 

659052 

38 

23 

331329 

958 

989777 

46 

341552 

1004 

658448 

37 

24 

331903 

957 

989749 

47 

342155 

1003 

667845 

36 

25 

332478 

956 

989721 

47 

342757 

1002 

657243 

36 

26 

333051 

954 

989693 

47 

343358 

1000 

656642 

34 

27 

333624 

953 

989605 

47 

343958 

999 

656042 

33 

28 

334195 

952 

989637 

47 

344558 

998 

655442 

32 

29 

334766 

950 

989609 

47 

345157 

997 

654843 

31 

30 
31 

335337 

949 

989582 
9.989553 

47 
47 

345755 
9.346353 

996 
994 

654245 

30 

9.335906 

948 

10.653647 

29 

32 

336475 

946 

989525 

47 

346949 

993 

653051 

28 

33 

337043 

945 

989497 

47 

347545 

992 

652455 

27 

34 

337610 

944 

989469 

47 

.348141 

991 

651859 

26 

35 

338176 

943 

989441 

47 

348735 

990 

651265 

25 

36 

338742 

941 

989413 

47 

349329 

988 

650671 

24 

37 

339306 

940 

989384 

47 

349922 

987 

650078 

23 

38 

339871 

939 

989356 

47 

350514 

986 

649480 

22 

39 

340434 

937 

989328 

47 

351106 

985 

648894 

21 

40 
41 

340996 

936 

989300 
9.989271 

47 
47 

351697 

983 

982 

648303 

20 
19 

9.341558 

935 

9.352287 

10.647713 

42 

342119 

934 

989243 

47 

352876 

981 

647124 

18 

43 

342679 

932 

989214 

47 

353465 

980 

646535 

17 

44 

343239 

931 

989186 

47 

354053 

979 

645947 

16 

45 

343797 

930 

989157 

47 

354640 

977 

645360 

15 

46 

34-t355 

929 

989128 

48 

355227 

976 

644773 

14 

47 

344912 

927 

989100 

48 

355813 

975 

644187 

13 

48 

345469 

926 

989071 

48 

356398 

974 

643602 

12 

49 

346024 

925 

989042 

48 

356982 

973 

643018 

11 

50 

346579 

924 

989014 

48 

357566 

971 

642434 

10 

31 

9.347134 

922 

9.988985 

48 

9.358149 

970 

10.641851 

9 

52 

347687 

921 

988956 

48 

358731 

969 

641269 

S 

53 

348240 

920 

988927 

48 

359313 

968 

640687 

7 

54 

348792 

919 

988898 

48 

359893 

967 

640107 

6 

55 

349343 

917 

988869 

48 

360474 

966 

639526 

5 

66 

349893 

916 

988840 

48 

361053 

965 

638947 

4 

57 

350443 

915 

988811 

49 

361632 

963 

638368 

3 

58 

350992 

914 

988782 

49 

362210 

962 

637790 

2 

59 

351540 

913 

988753'  49  1 

362787 

961 

637213 

T 

60 

352088 

911 

9887241  49  ' 

363364 

960 

636636 

0 

|l 

CO:^illC 

Sine   1 

Colaiig.  1 

1 

Tang   1  M.  j 

77  Degrees. 


SIXES    AND    TANGENTS.        (^13    Df^gieOS.) 


M. 

Su.e   1 

D.   1 

Cosine   1  D.  1 

Tan,. 

D.  1 

Cora;i^.   | 

~0~ 

9 . 3520S8 

911 

9.988724 

49 

9.363364 

960 

10.6366361  60 

1 

352635 

910 

988695 

49 

363940 

959 

636060  59 

2 

353181 

909 

988666 

49 

364515 

958 

635485  .^8 

3 

353726 

908 

988636 

49 

365090 

957 

634910  5? 

4 

354271 

907 

988607 

49 

305664 

9.55 

634336  56 

5 

354815 

905 

983578 

49 

366237 

954 

033763  55 

6 

35535S 

904 

988548 

49 

366810 

953 

633190 

54 

7 

355901 

903 

988519 

49 

367382 

952 

632618 

53 

8 

356443 

902 

988489 

49 

367953 

951 

632047 

52 

9 

350934 

901 

988460 

49 

368524 

950 

631476 

51 

10 
11 

357524 

899 

988430 
9.988401 

49 

49 

369091 

949 

630906 

50 

9.358064 

898 

9.369663 

948 

10.630337 

49 

12 

358603 

897 

988371 

49 

370232 

946 

629768 

48 

13 

359141 

896 

988342 

49 

370799 

945 

62920 1 

47 

14 

359678 

895 

988312 

50 

371367 

944 

628633 

46 

15 

360215 

893 

988282 

50 

371933 

943 

628067 

45 

16 

360752 

892 

988252 

50 

372499 

942 

627501 

44 

17 

361287 

891 

988223 

50 

373064 

941 

626936 

43 

18 

361822 

890 

988193 

50 

373629 

940 

626371 

19 

362356 

889 

988163 

50 

374193 

939 

625807 

41 

20 

362889 

888 

988133 

50 

374756 

938 

625244 

40 

21 

9.3;i3422 

887 

9.988103 

50 

9.375319 

937 

10.624681 

39 

22 

363954 

885 

988073 

50 

375881 

935 

624119 

33 

23 

364485 

834 

988043 

50 

376442 

9,34 

623558 

37 

24 

365016 

883 

988013 

50 

377003 

933 

622997 

36 

25 

365546 

882 

987983 

50 

377563 

932 

622437 

35 

26 

366075 

881 

987953 

50 

378122 

031 

621873 

34 

27 

366604 

880 

987922 

50 

378881 

930 

621319 

33 

28 

367131 

879 

987892 

50 

379239 

929 

620761 

32 

29 

367659 

877 

987862 

50 

379797 

928 

6202v)3 

31 

30 
31 

368185 

876 

987832 
9.987801 

51 
51 

380351 

927 

6196 V6 

30 

9. 3687 11 

875 

9.380910 

926 

lO.oiouyo,  29 

32 

369236 

874 

987771 

51 

381466 

925 

6185341  28 

33 

369761 

873 

987740 

51 

382020 

924 

617930J  27 

3i 

370285 

872 

987710 

51 

382575 

923 

617425  26 

35 

370808 

871 

987679 

51 

383129 

922 

6168711  25 

3ri 

371330 

870 

987649 

51 

383682 

921 

616318  24 

37 

371852 

889 

987618 

51 

384234 

920 

615766  23 

:?.^ 

372373 

857 

987588 

51 

384786 

919 

6152 Ml  22 

■M) 

372894 

866 

987557 

51 

385337 

918 

6146631  21 

40 

373414 

865 

987526 
9.987496 

51 
51 

385888 

917 

6141121  20 

41 

9.373933 

864 

9.336438 

915 

10.613562J  19 

42 

374452 

863 

987465 

51 

.386987 

914 

613013;  13 

43 

374970 

862 

987434 

51 

337536 

913 

612464  17 

44 

375487 

861 

987403 

52 

388084 

912 

611916  16 

45 

376003 

860 

987372 

52 

338631 

911 

6113691  15 

46 

376519 

859 

987341 

52 

389178 

910 

610822!  14 

47 

377035 

858 

997310 

52 

389724 

909 

610276  13 

49 

377549 

857 

987279 

52 

390270 

908 

609730  12 

49 

378003 

856 

987248 

52 

390815 

907 

609185!  11 

50 
51 

378577 

854 

987217 

S. 987186 

52 

52 

391360 

906 

608640,  !0 

9.379089 

853 

9.391903 

905 

roT603097|  '') 

52 

379601 

852 

987155 

52 

392447 

904 

607553!  8 

53 

380113 

851 

987124 

52 

392989 

903 

6070 11 j  7 

54 

380624 

850 

987092 

52 

393531 

902 

606469  6 

55 

381134 

849 

987061 

52 

394073 

901 

605927  5 

56 

381643 

848 

987030 

52 

394614 

900 

605336!  4 

57 

382152 

847 

986998 

52 

395154 

899 

6048461  3 

68 

3S2661 

846 

986967 

52 

395694 

898 

604306!  2 

59 

383168 

845 

986936 

62 

396233 

897 

6037671  1 

60 

38367.5 

844 

986904 

52 

396771 

896 

603229'  0 

<■..-:... 

1    Si;,e    1 

Cor-iiii: 

1 

1     ..  aiif.   1  .M. 

:t;  DRgreea. 


32 

(1^ 

[  Degrees.;  a 

TABLE  OF  LOGARITHMIC 

nn 

Sill.,'   1 

D. 

Cosine   |  D. 

Tang.   1 

D.   1 

Cotang.   1    j 

(' 

9.383675 

844  1 

9.986904 

52 

9.3967711 

896 

10.603229 

60 

I 

384182 

843  1 

986873 

53 

397309 

896 

602691 

59 

o 

384687 

842 

93684! 

53 

397846 

895 

602154 

58 

3 

385192 

841 

986809 

53 

398383 

894 

601617 

57 

4 

385697 

840 

986778 

53 

398919 

893 

601081 

56 

5 

386201 

'»39 

986746 

53 

399455 

892 

600545 

55 

6 

386704 

838 

986714 

53 

399990 

891 

600010 

54 

7 

387207 

837 

986683 

53 

400524 

890 

599476 

53 

8 

387709 

836 

986651 

53 

401058 

889 

598942 

52 

9 

388210 

835 

986619 

53 

401591 

888 

598409 

51 

10 
11 

388711 

834 

986587 

53 
53 

402124 

887 

597876 
10.597344 

50 
49 

9.389211 

833 

9 . 986555 

9.402656 

886 

12 

389711 

832 

986523 

53 

403187 

885 

.596813 

48 

13 

390210 

831 

986491 

53 

403718 

884 

596282 

47 

14 

390708 

830 

986459 

53 

404249 

883 

595751 

46 

15 

391206 

828 

986427 

53 

404778 

882 

595222 

45 

16 

391703 

827 

986396 

53 

405308 

881 

594692 

44 

17 

392199 

826 

986363 

54 

405836 

880 

594164 

43 

18 

392695 

825 

986331 

54 

406364 

879 

593636 

42 

19 

393191 

824 

986299 

54 

406892 

878 

5931 OS 

41 

20 

21 

393685 
9.394179 

823 
822 

986260 
9.986234 

54 
54 

407419 

877 

592.581 

40 
39 

9.407945 

876 

10.592055 

2-^ 

394673 

821 

986202 

54 

408471 

875 

591529 

38 

23 

395166 

820 

986169 

54 

408997 

874 

591003 

37 

2i 

395658 

819 

986137 

54 

409521 

874 

590479 

36 

2.T 

.390150 

818 

986104 

54 

410045 

873 

589955 

35 

26 

396641 

817 

986072 

54 

410.569 

872 

589431 

34 

27 

397132 

817 

986039 

54 

411092 

871 

588908 

33 

28 

397621 

816 

986007 

54 

411615 

870 

5883S5 

32 

29 

398 1 1 1 

815 

985974 

54 

412137 

869 

587863 

31 

30 
31 

398600 

814 

985942 
9.985909 

54 
55 

412658 

868 

587342 
10.586821 

30 

29 

9.399088 

813 

9.413179 

867 

32 

399575 

812 

985876 

55 

413699 

866 

586301 

28 

33 

400062 

811 

985843 

55 

414219 

865 

58578 1 

27 

31 

400549 

810 

985811 

55 

414738 

864 

585262 

26 

35 

401035 

809 

985778 

55 

41.5257 

864 

584743 

25 

36 

401.520 

808 

985745 

55 

415775 

863 

.584225 

24 

37 

402005 

807 

985712 

55 

416293 

862 

583707 

23 

38 

402489 

806 

98567S 

55 

416810 

861 

583190 

22 

33 

402972 

805 

985646 

55 

417326 

860 

582674 

21 

40 
41 

403455 

804 

985013 

55 
55 

417842 

8.59 

.582158 

20 
19 

9.403938 

803 

9.985580 

9.418358 

858 

10.. 58 1642 

■i-z 

404420 

802 

985.547 

55 

418873 

857 

.581127 

IS 

43 

404901 

801 

985514 

55 

419387 

858 

580613 

17 

44 

405382 

800 

985480 

55 

419901 

855 

580099 

16 

45 

405862 

799 

985447 

55 

420415 

855 

579585 

15 

46 

406341 

798 

985414 

56 

420927 

854 

579073 

14 

47 

406820 

797 

985380 

56 

421440 

8.53 

578560 

13 

48 

407299 

796 

985347 

56 

421952 

852 

578048 

12 

49 

407777 

795 

985314 

56 

422463 

851 

577537 

11 

50 
51 

408254 

794 

985280 
9.985247 

56 
56 

422974 

850 

577026 
10.576510 

10 
9 

9.408731 

794 

9.423484 

849 

52 

409207 

793 

98.5213 

56 

423993 

848 

576007 

8 

53 

409682 

792 

985180 

56 

424503 

848 

575497 

7 

54 

410157 

791 

985146 

56 

42.5011 

847 

574989 

6 

55 

410632 

790 

985113 

56 

425519 

846 

574481 

5 

56 

411106 

789 

985079 

56 

426027 

845 

573973 

4 

57 

411.579 

788 

985045 

56 

426534 

844 

573466 

3 

58 

412052 

787 

985011 

56 

427041 

843 

572959 

2 

59 

412524 

786 

984978 

56 

427547 

843 

572453 

1 

_60_ 

412996 

785 

984944 

56 

428052 

842 

571948 

0 

"~ 

Cosine 

Sine   1 

1  Cdtaiig. 

1   Tang   1  M.  | 

75  Degrees. 


SINES  AND  TAl^GENTS.    (16 

Degrees.) 

HH 

M. 

1    Sine 

1   D. 

1   Cosine   |  D. 

1   Taiiu. 

1   D. 

!    Culilii::.   1 

^ 

9.412996 

785 

9.984944 

,57 

9.428052 

842 

10.571948  1  GO 

1 

413467 

784 

984910 

57 

428557 

841 

571443  o9 

2 

413938 

783 

984876 

57 

429062 

840 

570938  53 

3 

414408 

783 

984842 

57 

429566 

839 

570434  hi 

4 

414878 

782 

984808 

57 

430070 

838 

569930  56 

5 

415347 

781 

984774 

67 

430573 

838 

569427 

55 

6 

416815 

780 

984740 

57 

431075 

837 

568925 

54 

7 

416283 

779 

9S4706 

67 

431577 

836 

568423 

53 

8 

416751 

778 

984672 

67 

432079 

835 

567921 

52 

9 

417217 

777 

984637 

57 

432580 

8.34 

567420 

61 

10 
11 

417684 
9.418150 

770 
775 

984603 

57 
57 

433080 
9.433.580 

833 

566920 
10., 566420 

50 
49 

9.984.569 

832 

12 

418615 

774 

984535 

57 

434080 

832 

565920 

48 

13 

419079 

773 

984500 

57 

434579 

831 

56.5421 

47 

14 

419544 

773 

984466 

57 

435078 

830 

564922 

46 

15 

420007 

772 

984432 

58 

435576 

829 

564424 

45 

16 

420470 

771 

984397 

58 

436073 

828 

563927 

44 

17 

420933 

770 

984363 

58 

436570 

828 

563430 

43 

18 

421395 

769 

984328 

68 

437067 

827 

562933 

42 

19 

421857 

768 

984294 

58 

437563 

826 

562437 

41 

20 
21 

422318 
9  422778 

767 
767 

984259 

58 
58 

4.38059 
9.438.554 

825 
824 

561941 
10.561446 

40 
39" 

9 . 984224 

22 

423238 

766 

984190 

58 

439048 

823 

560952 

38 

23 

423697 

765 

9841.55 

68 

439543 

823 

560457 

37 

24 

42-1 !  hC 

764 

984120 

58 

440036 

822 

569964 

36 

26 

424615 

763 

984085 

58 

440529 

821 

559471 

35 

26 

425073 

762 

984050 

58 

441022 

820 

5.58978 

34 

27 

425530 

761 

984015 

58 

441614 

819 

.558486 

33 

28 

425987 

760 

983981 

58 

442006 

819 

557994 

32 

29 

426443 

760 

983946 

58 

442497 

818 

557503 

31 

30 
31 

426899 

759 

983911 

9 . 983875 

68 
58 

442988 

817 

557012 

30 

29 

9.4273.54 

758 

9.4^13479 

816 

10.566521 

32 

427809 

757 

983840 

69 

443968 

816 

556032 

28 

33 

428263 

756 

983805 

59 

444458 

815 

555.542 

27 

34 

428717 

756 

983770 

69 

444947 

814 

5.56053 

26 

35 

429170 

764 

983735 

59 

445435 

813 

554565 

25 

36 

429623 

753 

983700 

59 

445923 

812 

6.54077 

24 

37 

430075 

762 

983664 

59 

446411 

812 

663589 

23 

38 

4.30527 

762 

983629 

59 

446898 

811 

6.53102 

22 

39 

430978 

751 

983594 

59 

447384 

810 

552616 

21 

40 
41 

431429 

750 

983558 
9.983523 

69 
59 

447870 

809 

552130 

20 
19 

9.431879 

749 

9.448356 

800 

10.551644 

42 

432329 

749 

983487 

59 

448841 

808 

.5511.59 

18 

43 

432778 

748 

98.3462 

59 

449326 

807 

5.50674 

17 

44 

433226 

747 

983416 

59 

449810 

806 

550190 

16 

45 

4.33675 

746 

983381 

69 

450294 

806 

549706 

15 

46 

434122 

745 

983345 

69 

450777 

805 

549223 

14 

47 

434569 

744 

983309 

59 

451260 

804 

548 740 

13 

48 

43,5016 

744 

983273 

60 

451743 

803 

548257 

12 

49 

435462 

743 

983238 

60 

462225 

802 

547775 

11 

50 
51 

435908 

742 

983202 

60 
60 

452706 

802 

547294 
10.546813 

10 
9 

9.4363,53 

741 

9.983166 

9.453187 

801 

52 

436798' 

740 

983130 

60 

453668 

800 

546332 

8 

53 

437242 

740 

983094 

60 

454148 

799 

.545852 

7 

54 

437686; 

739 

9830.58 

60 

454628 

799 

545372 

6 

55 

438129 

738 

983022 

60 

455107 

798 

644893 

5 

56 

438572 

737 

982986 

60 

455586 

797 

644414 

4 

57 

439014 

736 

982950 

60 

456064 

796 

543936 

3 

58 

439456 

736 

982914 

no 

456.542 

796 

543458 

2 

69 

439897 

735 

982878 

60 

457019 

796 

642981 

1 

60 

440338 

734 

982842 

60 

457496 

794 

542504 

0 

1™ 

Cdsiue   1 

s...   1 

Cdlaii;;. 

1    Tang.   |M.J 

74  Degrees. 


34 

(16  Degrees.)  a 

TABLE  OF  LOGARITHMIC 

M. 

Sine 

I). 

Cosine 

D. 

Tanp. 

D. 

Cotai:g  1  J 

"IT 

9.440338 

734 

9.982842 

"60" 

9.457496 

7"94 

10.542504 

60 

1 

440778 

733 

982805 

60 

457973 

793 

542027 

59 

2 

441218 

732 

982769 

61 

458449 

793 

541551 

58 

3 

441658 

731 

982733 

61 

458925 

792 

541075 

57 

4 

442096 

731 

982696 

61 

459400 

791 

540600 

56 

f) 

442535 

730 

982660 

61 

459875 

790 

540125 

55 

6 

442973 

729 

982624 

61 

460349 

790 

539651 

54 

7 

443410 

728 

982587 

61 

460323 

789 

539177 

53 

8 

443847 

727 

982551 

61 

461297 

788 

538703 

52 

9 

444284 

727 

982514 

61 

461770 

788 

538230 

51 

10 
11 

444720 

726 

982477 
9.982441 

61 
61 

462242 

787 

537758 
10.537286 

50 

49" 

9.445155 

T25 

9.462714 

786 

12 

445590 

724 

982404 

61 

463186 

785 

530814 

48 

V3 

446025 

723 

982367 

61 

463658 

785 

536342 

47 

14 

446459 

723 

982331 

61 

464129 

784 

.535871 

46 

15 

446893 

722 

982294 

01 

464599 

783 

,   535401 

45 

16 

447326 

721 

982257 

61 

465069 

783 

534931 

44 

17 

447759 

720 

982220 

62 

465539 

782 

534461 

43 

18 

448191 

720 

982183 

62 

466008 

781 

533992 

42 

19 

448623 

719 

982146 

62 

466476 

780 

533524 

41 

20 

21 

449054 

718 

982109 

62 
62 

466945 

780 

633055 
10.532587 

40 
39 

9.449485 

717 

9.982072 

9.467413 

779 

22 

449915 

716 

982035 

62 

467880 

778 

532120 

38 

23 

450345 

716 

981998 

62 

468347 

778 

531653 

37 

24 

450775 

715 

981961 

62 

468814 

777 

631186 

36 

25 

451204 

714 

981924 

62 

469280 

776 

530720 

P 

26 

451632 

713 

981886 

62 

469746 

775 

630254 

O-x 

27 

452060 

713 

981849 

62 

470211 

775 

529789 

33 

28 

452488 

712 

981812 

62 

470676 

774 

629324 

32 

29 

452915 

711 

981774 

62 

471141 

773 

528859 

31 

30 

453342 

710 

981737 

62 

471605 

773 

528395 

30 

31" 

9.453768 

710 

9.981699 

63 

9.472068 

772 

10.527932 

2y 

32 

454194 

709 

981662 

63 

472532 

771 

527468 

28 

33 

454619 

708 

981625 

63 

472995 

771 

527005 

27 

34 

455044 

707 

981587 

63 

473457 

770 

526543 

26 

35 

455469 

707 

981549 

63 

473919 

769 

.526081 

25 

36 

455893 

706 

981512 

63 

474381 

769 

525619 

24 

37 

456316 

705 

981474 

63 

474842 

768 

525158 

23 

38 

456739 

704 

981436 

63 

475303 

767 

524697 

22 

39 

457162 

704 

981399 

63 

475763 

767 

524237 

21 

40 
41 

457584 

703 

981361 
9.981323 

63 
63 

476223 
9.476683 

766 
765 

523777 
10.523317 

20 
19 

9.458006 

702 

42 

458427 

701 

981285 

63 

477142 

765 

522858 

18 

43 

458848 

701 

981247 

63 

477601 

764 

522399 

17 

44 

459268 

700 

981209 

63 

478059 

763 

521941 

16 

45 

459688 

699 

981171 

63 

478517 

763 

521483 

15 

46 

460108 

698 

981133 

64 

478975 

762 

521025 

14 

47 

460527 

698 

981095 

64 

479432 

761 

620568 

13 

48 

460946 

697 

981057 

64 

479889 

761 

520111 

12 

49 

461364 

696 

981019 

64 

480345 

760 

519655 

11 

50 

51 

461782 

695 

980981 

9.980942 

64 
64 

480801 

759 

519199 
10.518743 

10 
9 

9.462199 

695 

9.481257 

759 

52 

462616 

694 

980904 

64 

481712 

758 

518288 

8 

53 

463032 

693 

980866 

64 

482167 

757 

6178.33 

7 

54 

463448 

693 

980827 

64 

482621 

757 

617379 

6 

55 

463864 

692 

980789 

64 

483075 

756 

616925 

5 

56 

464279 

691 

9S0750 

64 

483529 

755 

516471 

4 

57 

464694 

690 

980712 

64 

483982 

755 

516018 

3 

58 

465108 

690 

980673 

64 

484435 

754 

516565 

2 

59 

465522 

689 

980635!  64 

484887 

753 

515i)3 

1 

60 

465935 

688 

980596  64 

485339 

753 

514nRi 

0 

Cosine 

1   Sine   1 

1  Colang. 

j    Tang.   1  M. 

73  DoK'-ees. 


SINES  AM)  TANGENTS. 

(17  D 

egrees 

) 

35 

M. 

Sine 

I' 

Cosine   1  D. 

Tang.   i 

D.  1 

Cotang.   1    1 

{) 

9.465935 

688 

9.980596 

64 

9.485339 

755 

10.514661 1 

60 

1 

466348 

688 

980558 

64 

485791 

752 

614209 

59 

466761 

687 

980519 

65 

486242 

751 

513758 

58 

3 

467173 

686 

980480 

65 

486693 

751 

513307 

57 

4 

467585 

685 

980442 

65 

487143 

750 

512857 

56 

5 

467996 

685 

980403 

65 

487593 

749 

512407 

55 

6 

468407 

684 

980364 

65 

488043 

749 

511957 

54 

7 

468817 

683 

980325 

65 

488492 

748 

511.508 

53 

8 

469227 

683 

980286 

65 

488941 

747 

511059 

52 

^ 

469637 

682 

980247 

65 

489390 

747 

510610 

51 

10 
11 

470046 

681 

980208 
9.980169 

65 
65 

489838 

746 

510162 
10  509714 

50 
49 

9.470455 

680 

9.490285 

746 

12 

470863 

680 

980130 

65 

490733 

745 

.509267 

48 

13 

471271 

679 

980091 

65 

491180 

744 

508820 

47 

14 

471679 

678 

980052 

65 

491627 

744 

508373 

46 

15 

472086 

678 

980012 

65 

492073 

743 

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45 

16 

472492 

677 

979973 

65 

492519 

743 

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44 

17 

472S98 

076 

9799.34 

66 

492965 

742 

507035 

43 

18 

473304 

676 

979895 

66 

493410 

741 

506590 

42 

19 

473710 

675 

979855 

66 

493854 

740 

506143 

41 

20 
21 

474115 

674 

979816 
9.979776 

66 
66 

494299 

740 

505701 
10.50.5257 

40 
39 

9.474519 

674 

9.494743 

740 

22 

474923 

673 

979737 

66 

495186 

739 

504814 

38 

23 

475327 

672 

979697 

66 

495G30 

738 

504370  1  37  \ 

24 

475730 

672 

979658 

66 

496073 

737 

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36 

25 

476133 

671 

979618 

66 

490515 

737 

503485 

35 

2G 

476536 

670 

979579 

66 

496957 

736 

503043 

34 

27 

476938 

669 

979539 

66 

497399 

736 

502601 

33 

28 

477340 

669 

979499 

66 

497841 

735 

502159  1  32 

29 

177741 

668 

979459 

66 

498282 

734 

501718  1  31 

30 
31 

478142 

667 

979420 
9.979380 

66 
66 

498722 

734 

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30 

9.478542 

667 

9.499163 

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10.500837 

29 

32 

478942 

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979340 

66 

499603 

733 

500397  j  28 

33 

479342 

665 

979300 

67 

500042 

732 

499958  1  27 

34 

479741 

665 

979260 

67 

500481 

731 

499519  26 

35 

480140 

664 

979220 

67 

.500920 

731 

499080  !  25 

36 

480539 

663 

979180 

67 

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730 

498641  1  24 

37 

480937 

663 

979140 

67 

501797 

730 

498203  S3 

38 

481334 

662 

979100 

67 

502235 

729 

497765  !  22 

39 

481731 

661 

979059 

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502672 

728 

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40 
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482128 

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979019 
9.978979 

67 
67' 

503109 
9.503546 

728 
727 

496891  I  20  i 

9.482525 

6G0 

10.496454 

19 

42 

482921 

659 

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67 

503982 

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496018 

18 

43 

483316 

659 

978898 

67 

504418 

726 

495582 

17 

44 

483712 

6.58 

978858 

67 

504854 

725 

495146 

16 

45 

484107 

657 

978817 

67 

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725 

494711 

15 

46 

484.501 

657 

978777 

67 

505724 

724 

494276 

14 

47 

484895 

656 

978736 

67 

506159 

724 

493841 

13 

48 

485289 

655 

978696 

68 

506593 

723 

493407 

12 

49 

485682 

655 

978655 

68 

507027 

722 

492973 

11 

50 
51 

486075 

654 

978615 

68 
68 

507460 
9.507893 

722 
721 

492540 

10 
9 

9.486467 

653 

9.978574 

10.492107 

52 

486860 

653 

978533 

68 

508326 

721 

491674 

8 

53 

487251 

652 

978493 

68 

508759 

720 

491241 

7 

54 

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651 

978452 

68 

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719 

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6 

55 

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68 

509622 

719 

490378 

5 

56 

488424 

650 

978370 

68 

510054 

718 

489946 

4 

57 

488814 

650 

978329 

68 

510485 

718 

489515 

3 

58 

489204 

649 

978288 

68 

510916 

717 

489084 

2 

59 

489593 

648 

978247 

68 

511346 

716 

488654'  1 

60 

489982 

648 

978206 

68 

511776 

716 

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~ 

Cosine 

Sine   j 

Cotang. 

1     Tang.  |M. 

71  Degrees. 


88 

(' 

8  Degi 

ees.)  A 

TABI.I1  OF  LOGARITir?.TIC 

M. 

Sine 

1  i>- 

1  Cosine   1  J). 

1   Tang. 

1  n. 

[   Cotans.      j 

0 

9.489982 

648 

9.978206; 68 

9.5117761   716 

10.488224 

60 

1 

490371 

648 

978165 

68 

512206 

1  716 

487794 

59 

2 

490759 

647 

978124 

68 

512635 

'  715 

487365 

68 

3 

491147 

'  646 

978083 

69 

613064 

■  714 

486936 

67 

4 

491535 

646 

978042 

69 

513493 

714 

486507 

56 

5 

491922 

646 

978001 

69 

513921 

713 

486079 

55 

6 

492308 

644 

977959 

69 

614349 

713 

485651 

54 

7 

492695 

644 

977918 

69 

514777 

712 

485223 

53 

8 

493081 

643 

977877 

69 

615204 

712 

484796 

52 

9 

493466 

642 

977835 

69 

516631 

711 

484369 

51 

10 
11 

493851 

642 

977794 

9.977752 

69 
69 

616057 
9.516484 

710 

483943 
10.483516 

50 
49 

9.494236 

641 

710 

12 

494621 

641 

977711 

69 

616910 

709 

483090 

48 

13 

495005 

640 

977669 

69 

517335 

709 

482605 

47 

14 

495388 

639 

977628 

69 

617761 

708 

482239 

46 

15 

495772 

639 

977.586 

69 

618185 

708 

481815 

45 

16 

496154 

638 

977544 

70 

518610 

707 

481390 

44 

17 

496537 

637 

977503 

70 

619034 

706 

480966 

43 

18 

496919 

637 

977461 

70 

519458 

706 

480542 

42 

19 

497301 

636 

977419 

70 

519882 

705 

480118 

41 

20 
21 

497682 

636 

977377 

70 
70 

520305 

705 

479695 
10.479272 

40 
39 

9.498064 

635 

9.977335 

9.520728 

704 

22 

498444 

634 

977293 

70 

521151 

703 

478849 

38 

23 

498825 

634 

977251 

70 

621.573 

703 

478427 

37 

24 

499204 

633 

977209 

70 

621996 

703 

478005 

36 

25 

499584 

632 

977167 

70 

522417 

702 

477583 

35 

26 

499963 

632 

977125 

70 

522838 

702 

477162 

34 

27 

500342 

631 

977083 

70 

523259 

701 

476741 

33 

28 

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631 

977041 

70 

623680 

701 

476320 

32 

29 

501099 

630 

976999 

70 

524100 

700 

475900 

31 

30 
31 

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629 

976957 

70 
70 

524520 

699 

475480 

30 

29 

9.5018.54 

629 

9.976914 

9.524939 

699 

10.47.5061 

32 

602231 

628 

976872 

71 

525359 

698 

474641 

28 

33 

502607 

628 

9768.30 

71 

526778 

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27 

34 

502984 

627 

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71 

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697 

473803 

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35 

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626 

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71 

626616 

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473385 

25 

36 

503735 

626 

976702 

71 

527033 

696 

472967 

24 

37 

504110 

625 

976660 

71 

527451 

696 

472.549 

23 

38 

504485 

625 

976617 

71 

527868 

695 

4721.32 

22 

39 

504860 

624 

976574 

71 

528285 

695 

471715 

21 

40 
41 

505234 

623 

976532 
9.976489 

71 
71 

528702 

694 

471298 
0.470881 

20 
19 

9.505608 

623 

9.529119 

693 

42 

505981 

622 

976446 

71 

529535 

693 

470465 

18 

43 

506354 

622 

976404 

71 

529950 

693 

470050 

17 

44 

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621 

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71 

530366 

692 

469634 

16 

45 

507099 

620 

976318 

71 

530781 

691 

409219 

15 

46 

507471 

620 

976275 

71 

531196 

691 

468804 

14 

47 

507843 

619 

976232 

72 

531611 

690 

468389 

13 

48 

508214 

619 

976189 

72 

632025 

690 

467975 

12 

49 

508585 

618 

976146 

72 

53243^ 

689 

467561 

11 

50 

51 

508956 
9.509326 

618 

976103 
9.976060 

72 

72 

532863 

689 

467147 
10.466734 

10 
9 

617 

9.633266 

688 

52 

509696 

636 

976017 

72 

533679 

688 

466321 

8 

53 

510065 

616 

975974 

72 

534092 

687 

465908 

7 

54 

510434 

615 

975930 

72 

534504 

687 

465496 

6 

55 

510803 

615 

975887 

72 

634916 

686 

465084 

5 

56 

511172 

014 

975844 

72 

635328 

686 

464672 

4 

57 

611540 

613 

975800 

72 

535739 

685 

464261 

3 

58 

511907 

613 

975757 

72 

536150 

685 

463850 

2 

59 

612275 

612 

975714 

72 

536561 

684 

463439 

1 

60 

612642 

612 

975670 

72 

530972 

684 

463028 

0 

J 

Cosine 

1 

Sine   1 

Cotaiij;. 

.... 

Tanp.    !  M. 

71  Decrees. 


SINES  AND  TANGENTS.      ''^0   DeiTrees.) 


;;7 


M. 

Sine 

D. 

Cosine 

D. 

1   Tang. 

1). 

1   Cotariir.   j    | 

"IT 

9.512642 

612 

9.975670 

73 

9.536972 

684 

10.463028 

60 

1 

513009 

611 

975627 

73 

537382 

683 

462618 

59 

2 

513375 

611 

975583 

73 

537792 

683 

462208 

58 

3 

513741 

610 

9r5539 

73 

538202 

682 

461798 

57 

4 

514107 

609 

975496 

73 

538611 

682 

461389 

56 

5 

514-472 

609 

975452 

73 

539020 

681 

460980 

55 

6 

514837 

608 

975408 

73 

539429 

681 

460571 

54 

7 

515202 

608 

975365 

73 

539837 

680 

460163 

53 

8 

515566 

607 

975321 

73 

540245 

680 

459755 

52 

9 

515930 

607 

975277 

73 

540653 

679 

459347 

51 

10 

516294 

606 

975233 
9.975189 

73 
73 

541061 

679 

458939 
10.458532- 

50 
49 

9.516657 

605 

9.541468 

678 

12 

517020 

605 

975145 

73 

541875 

678 

458125 

48 

13 

517382 

604 

975101 

73 

542281 

677 

457719 

47 

14 

517745 

604 

975057 

73 

542688 

677 

457312 

46 

15 

518107 

603 

975013 

73 

543094 

676 

456906 

45 

16 

518468 

603 

974969 

74 

543499 

676 

456501 

44 

17 

518829 

602 

974925 

74 

543905 

675 

456095 

43 

18 

519190 

601 

974880 

74 

544310 

675 

455690 

42 

19 

519551 

601 

974836 

74 

544715 

674 

455285 

41 

20 

21 

519911 

600 

974792 

74 
74 

545119 

674 

454881 
10.454476 

40 
39 

9.520271 

600 

9.974748 

9.545524 

673 

22 

520631 

599 

974703 

74 

545928 

673 

454072 

38 

23 

520990 

599 

974659 

74 

546331 

672 

453669 

37 

24 

521349 

598 

974614 

74 

546735 

672 

453265 

36 

25 

521707 

598 

974570 

74 

547138 

671 

452862 

35 

26 

522066 

597 

974525 

74 

547540 

671 

452460 

34 

27 

522424 

596 

974481 

74 

547943 

670 

452057 

33 

28 

522781 

596 

974436 

74 

548345 

670 

451655 

32 

29 

5231.38 

595 

974391 

74 

548747 

669 

451253 

31 

30 
31 

523495 

595 

974347 
9.974.302 

75 
75 

549149 

669 

4.50851 
10.450450 

30 
29 

9.523852 

594 

9.549550 

668 

32 

524208 

594 

974257 

75 

549951 

668 

4500^9 

28 

33 

524564 

593 

974212 

75 

550352 

667 

443648 

27 

34 

524920 

593 

974167 

75 

550752 

667 

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26 

35 

525275 

592 

974122 

75 

551152 

666 

448848 

25 

36 

525630 

591 

974077 

75 

551552 

666 

448448 

24 

37 

525984 

591 

974032 

75 

551952 

665 

448048 

23 

38 

526339 

590 

973987 

75 

552351 

665 

447649 

22 

39 

526693 

590 

973942 

75 

552750 

665 

447250 

^\ 

40 
41 

527046 

589 

973897 

75 

75 

553149 

664 

446851 

20 
19 

9.527400 

589 

9.973852 

9.553548 

664 

10.446452 

42 

527753 

588 

973807 

75 

553946 

6-63 

446054 

18 

43 

528105 

588 

973761 

75 

554344 

663 

445656 

17 

44 

528458 

687 

973716 

76 

554741 

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445259 

16 

45 

528810 

587 

973671 

76 

5551S9 

662 

444861 

15 

46 

529161 

586 

973625 

76 

555^36 

661 

444464 

14 

47 

529513 

586 

973580 

76 

555933 

661 

444067 

13 

48 

529864 

585 

973535 

76 

556329 

660 

443671 

12 

49 

530215 

585 

973489 

76 

556725 

660 

443275 

11 

50 
51 

530565 
9.530915 

584 

973444 
9.973398 

76 

76 

557121 

659 

442879 
10.442483 

10 
9 

584 

9.557517 

659 

52 

531265 

583 

973352 

re 

557913 

659 

442087 

8 

53 

531614 

582 

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76 

558308 

658 

441692 

7 

54 

531963 

582 

9732^1 

76 

558702 

658 

441298 

6 

55 

532312 

581 

973S15 

76 

559097 

657 

440903 

5 

56 

532661 

581 

973169 

76 

559491 

657 

440509 

4 

57 

533009 

58^ 

P73124 

76 

559885 

656 

440115 

3 

58 

533357 

580 

973078 

76 

560279 

656 

439721 

2 

59 

533704 

579 

97J032 

77 

560673 

655 

439327 

1 

60_ 

534052 

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P72986 

77 

561066 

655 

438934 

0 

1   Cosine 

Sine    1 

Cotang. 

Taiis.    1  AL  j 

70   DfL'i- 

15 


38 

C-' 

0  Degrees.^  a 

TABLE  at   lo.;arh 

U3I1C 

M. 

1    Sine 

1   D. 

1  Cosine   |  D. 

1   Tane. 

1   D. 

1   C.tans.   1    j 

~w 

9.5340521  578 

9.972986 

i77 

9.561066 

655 

10.438934 

-60* 

1 

534399 

577 

972940 

77 

661459 

654 

438541 

69 

2 

534745 

577 

972894 

77 

661861 

654 

438149 

58 

3 

535092 

677 

972848 

77 

562244 

653 

437756 

o7 

4 

53543S 

576 

972802 

77 

562636 

663 

437364 

56 

6 

535783 

576 

972765 

77 

563028 

6.53 

436972 

56 

6 

536129 

675 

972709 

77 

56.3419 

652 

436581 

64 

7 

536474 

574 

972663 

77 

563811 

652 

436189 

53 

8 

536818 

574 

972617 

77 

564202 

661 

435798 

52 

9 

537163 

573 

972570 

77 

664592 

651 

435408 

61 

10 

11 

537607 
9.537851 

573 

972524 
9.972478 

77 
77 

564983 

650 

435017 

50 
49 

572 

9.56537S 

650 

10.434627 

12 

538194 

672 

972431 

78 

565763 

649 

434237 

48 

13 

588638 

571 

972385 

78 

666153 

649 

433847 

47 

14 

538880 

571 

972338 

78 

566642 

649 

433458 

46 

15 

539223 

570 

972291 

78 

566932 

648 

433068 

45 

16 

539565 

570 

972245 

78 

567320 

648 

432680 

44 

17 

539907 

669 

972198 

78 

667709 

647 

432291 

43 

18 

540249 

569 

972151 

78 

568098 

647 

431902 

42 

19 

.540590 

568 

972105 

79 

568486 

646 

431514 

41 

20 

21 

.540931 

568 

972058 

78 
78 

568873 

646 

431127 
10.430739 

40 
39 

9.541272 

567 

9.972011 

9.669261 

645 

22 

.541613 

567 

971964 

78 

669648 

645 

430352 

38 

23 

541963 

666  1 

971917 

78 

570035 

645 

429965 

37 

24 

542293 

566  i 

971870 

78 

570422 

644 

429578 

36 

25 

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665  i 

971823 

78 

570809 

644 

429191 

35 

26 

542971 

566  ; 

971776 

78 

671195 

643 

428805 

34 

27 

543310 

664  i 

971729 

79 

571581 

643 

428419 

33 

28 

543649 

664  ; 

971682 

79 

571967 

642 

428033 

32 

29 

543987 

563 

971635 

79 

572362 

642 

427648 

31 

31 

54i326 

663  1 

971588 

79 

79 

572738 
9.573123 

642 

427262 
10.426877 

30 

29 

9.544663 

662  1 

9.971540 

641 

32 

545000 

562  j 

971493 

79 

673607 

641 

426493 

28 

33 

54533S 

561  1 

971446 

79 

573892 

640 

426108 

27 

34 

645P,74 

561  i 

971398 

79 

574276 

640 

425724 

26 

35 

546011 

560 

971351 

79 

574660 

639 

425340 

26 

36 

546347 

560  ; 

971303 

79 

575044 

639 

424956 

24 

37 

546683 

&59  ! 

971256 

79 

675427 

639 

424573 

23 

38 

547019 

559  ' 

971208 

79 

67.5810 

638 

424190 

22 

39 

547354 

558  1 

971161 

79 

676193 

638 

423807 

21 

40 
41 

547089 

558  ! 

971113 
9.971066 

79 
80 

676576 

637 

423424 

20 
19 

9.548024 

557 

9.676958 

637 

10.423041 

42 

548359 

557  > 

971018 

80 

677341 

636 

422659 

18 

43 

548693 

556 

970970 

80 

577723 

636 

422277 

n 

44 

549027 

556 

970922 

80 

578104 

636 

421896 

16 

45 

549360 

655 

S70874 

80 

578486 

635 

421514 

15 

46 

649693 

555 

970827 

80 

578867 

635 

421133 

14 

47 

650026 

554 

970779 

80 

579248 

634 

420752 

13 

48 

550359 

654 

970731 

80 

579629 

634 

420371 

12 

49 

550692 

6.53 

970683 

80 

580009 

634 

419991 

11 

50 
51 

551024 

653 

970635 

fiO 
80 

580389 
9.580769 

633 

419611 
10.419231 

10 
9 

9.551356 

552 

9.970586 

633 

52 

551687 

552 

970538 

80 

581149 

632 

418851 

8 

53 

5.52018 

652 

970490 

80 

581528 

632 

418472 

7 

54 

552349 

551 

970442 

80 

5S1907 

632 

418093 

6 

56 

552680 

551 

970394 

80 

682286 

631 

417714 

6 

56 

553010 

550 

970345 

81 

582&65 

631 

417335 

4 

57 

553341 

550 

970297 

81 

583043 

630 

416957 

3 

58 

553670 

649 

970249 

81 

583422 

630 

416578 

2 

59 

654000 

549 

970200 

81 

583800 

629 

416200 

1 

60 

554329 

548 

9701,52 

81 

584177 

629 

.  415823 

0 

Cof^iiJf 

1   S>n.    1 

Cotang. 

Tang.   [ 

W 

Degrt-fcs, 


SINES  AND  TANOENTs.  (21  Degrees 

•; 

39 

_M_| 

Sine   1 

D.   1 

Cosine  |  D.  | 

Tang.   1 

D.   1 

Cntang.  |   | 

U 

9.554329 

548 

9.970152 

81 

9.584177 

629 

10.415823 

60 

1 

554658 

548 

970103 

81 

584555 

629 

415445 

59 

2 

554987 

547 

970055 

81 

684932 

628 

415068 

58 

3 

555315 

547 

970006 

81 

585309 

628 

414691 

57 

4 

556643 

546 

969957 

81 

585686 

627 

414314 

56 

6 

555971 

546 

969909 

81 

586062 

627 

413938 

65 

8 

556299 

545 

969860 

81 

586439 

627 

413561 

54 

7 

556626 

545 

969811 

81 

586815 

626 

4131&5 

53 

8 

556953 

544 

969762 

81 

587190 

626 

412810 

52 

9 

557280 

544  1 

969714 

81 

587566 

625 

412434 

51 

10 
11 

557606 

543 

969665 
9.969616 

81 

82 

587941 

625 

625 

412059 
10.411684 

50 
49 

9.557932 

543 

9.588316 

12 

558258 

643 

969567 

82 

588691 

624 

411309 

48 

13 

558583 

542 

969518 

82 

589066 

624 

410934 

47 

14 

558909 

542 

969469 

82 

589440 

623 

410560 

46 

15 

659234 

541 

969420 

82 

589814 

623 

410186 

45 

16 

559558 

541 

969370 

82 

590188 

623 

409812 

44 

17 

659883 

540 

969321 

82 

590562 

622 

409438 

43 

18 

560207 

540 

969272 

82 

690935 

622 

409065 

42 

19 

560531 

539 

969223 

82 

.'^91308 

622 

408692 

41 

20 
21 

560855 

539 

969173 

82 
82 

591681 
9.592054 

621 

408319 

40 
39 

9.561178 

538 

9.969124 

621 

10.407946 

22 

561501 

538 

969075 

82 

692426 

620 

407674 

38 

23 

561824 

537 

969025 

82 

592798 

620 

407202 

37 

24 

562146 

.537 

968976 

82 

593170 

619 

406829 

36 

25 

562468 

536 

968926 

83 

593542 

619 

406468 

35 

26 

562790 

6.36 

968877 

83 

593914 

618 

406086 

34 

27 

563112 

536 

968827 

83 

594285 

618 

405715 

33 

28 

563433 

535 

968777 

83 

594656 

618 

405344 

32 

29 

563755 

536 

968728 

83 

595027 

617 

404973 

31 

30 

31" 

564075 

534 

968678 
9.968628 

83 

83 

595398 
9.. 595768 

617 
617 

404602 
10.404232 

30 

29 

9.. 564396 

534 

32 

564716 

.533 

968578 

83 

596138 

616 

403862 

28 

33 

565036 

533 

968528 

83 

696508 

616 

403492 

27 

34 

565356 

532 

968479 

83 

596878 

616 

403122 

26 

*.J5 

565076 

532 

968429 

83 

597247 

615 

402763 

25 

36 

565995 

631 

968379 

83 

597616 

616 

402384 

24 

37 

566314 

.531 

968329 

83 

597986 

616 

402015 

23 

38 

566632 

531 

968278 

83 

598354 

614 

401646 

22 

39 

566951 

530 

968228 

84 

598722 

614 

401278 

21 

40 
41 

567269 

630 

968178 
9.968128 

84 
84 

599091 

613 

400909 
10.400541 

20 
19 

9.567587 

529 

9.599459 

613 

42 

567904 

529 

968078 

84 

599827 

613 

400173 

18 

43 

668222 

528 

968027 

84 

600194 

612 

399806 

17 

44 

568539 

528 

967977 

84 

600562 

612 

399438 

16 

45 

668856 

.528 

967927 

84 

600929 

611 

399071 

15 

46 

569172 

527 

967876 

84 

601296 

611 

398704 

14 

!7 

569488 

527 

967826 

84 

601602 

611 

398338 

13 

if=^ 

569804 

526 

967775 

84 

602029 

610 

397971 

12 

A\i 

570120 

526 

967726 

84 

602395 

610 

397605 

11 

50 
M 

570435 

525 

967674 
9.967624 

84 
84 

602761 

610 

397239 
10.396873 

10 
9 

9.570751 

526 

9.603127 

609 

62 

571066 

524 

967573 

84 

603493 

609 

396507 

8 

53 

571380 

524 

967522 

85 

603858 

609 

396142 

7 

54 

571695 

523 

967471 

85 

604223 

608 

396777 

6 

55 

672009 

523 

967421 

85 

604588 

608 

395412 

5 

56 

572323 

523 

967370 

85 

604953 

607 

395047 

4 

57 

573636 

522 

967319 

85 

605317 

607 

394683 

3 

58 

57295C 

522 

967268 

85 

605682 

607 

394318 

2 

59 

573262 

521 

967217 

86 

606046 

606 

393954 

1 

60 

57357£ 

521 

967166 

85 

606410 

606 

393590 

0 

1   Conine 

j 

1   Sine    1 

1  C.l;u>g. 

I 

1    Tantr.  \M.\ 

iiS  Uegi 


40 


(22  Degrees.;     a  tab/.js  of    LOGARtxnMic 


M.  I 


I       p.      I      Cosine      |  D.  |      Tanz.      |       D. 


Cotiinc      j 


8 

9 
10 

11 
12 
13 
14 
15 
16 
17 
18 
19 
20 
21 
22 
23 
24 
25 
26 
27 
28 
29 
30 

31 
32 
33 
34 
35 
36 
37 
38 
39 
40 
41 
42 
43 
44 
45 
46 
47 
48 
49 
50 
51 
52 
53 
54 
55 
56 
&7 
58 
59 
60 


9.  n73575' 

521  i 

9.967166 

573888 

.520 

967115 

574200 

520 

907064 

574512 

519 

967013 

574824 

519 

966961 

575136 

519 

966910 

575447 

518 

966859 

575758 

518 

966808 

570069 

517 

966756 

576379 

517 

966705 

576689 

516 

966663 
9.966602 

9.576999 

516 

577309 

516 

966550 

577618 

515 

966499 

577927 

515 

966447 

578236 

514 

966395 

678545 

514 

966344 

578853 

513 

966292 

579162 

513 

966240 

579470 

513 

966188 

579777 

612 

966136 
9  966085 

9.. 580085 

bl2 

580392 

511 

966033 

5S0699 

511 

96.5981 

581005 

511 

965928 

581312 

510 

965876 

581618 

510 

965824 

581924 

509 

965772 

682229 

509 

905720 

582535 

509 

965668 

582840 

508 

965615 

9.583145 

508 

9.965563 

583449 

507 

965611 

683754 

607 

96.5468 

5840.58 

506 

96.5406 

684361 

506 

965353 

684665 

-^06 

965301 

584968 

505 

965248 

585272 

505 

965195 

585574 

504 

965143 

585877 

504 

965090 
9.965037 

9.586179 

503 

586482 

503 

964984 

686783 

503 

964931 

587085 

502 

964879 

587386 

502 

964826 

587688 

501 

964773 

587989 

501 

964719 

588289 

501 

964666 

588590 

500 

964613 

688890 

600 

964560 

9.589190 

499 

9.964607 

589489 

499 

964454 

589789 

499 

964400 

690088 

498 

964347 

590387 

498 

964294 

690686 

497 

964240 

690984 

497 

964187 

591282 

497 

964133 

691580 

496 

964080 

591878 

496 

964026 

,606410 
606773 
607137 
607500 
607863 
608225 
608588 
608950 
609312 
609674 
610036 


9.610397 
610759 
611120 
611480 
611841 
612201 
612561 
612921 
613281 
613641 


9.614000 
614359 
614718 
616077 
615435 
615793 
616161 
616509 
616867 
617224 


9  617582 
617939 
618296 
618652 
619008 
619364 
619721 
620076 
620432 
620787 


9.621142 
621497 
621852 
622207 
622561 
622915 
623269 
623623 
623976 
624330 


9.624683 
625036 
625388 
625741 
626093 
626445 
626797 
627149 
627501 
627852 


600 
606 
605 
605 
604 
604 
604 
603 
603 
603 
602 


602 
602 
601 
601 
601 
600 
600 
600 
699 
599 


598 
698 
598 
597 
597 
697 
596 
596 
596 
595 


.596 
695 
594 
694 
694 
693 
593 
693 
592 
592 


10.393590 
393227 
892863 
392500 
392137 
391775 
391412 
391050 
390688 
390326 

389964 

10.389603 
389241 
388880 
388520 
388159 
.387799 
387439 
387079 
386719 
386359 


10, 


10. 


692 
691 
691 
690 
690 
690 
689 
689 
589 
588 


588 
588 
687 
687 
687 
586 
686 
.586 
585 
585 


386000 
385641 
38.5282 
384923 
384565 
384207 
383849 
383491 
383133 
382776 
383418 
382061 
381705 
381348 
380992 
380636 
380279 
379924 
379668 
379213 


10.378868 
378503 
378148 
377793 
377439 
377085 
376731 
376377 
376024 
375670 


10.375317 
374964 
374612 
374259 
373907 
373.555 
373203 
372851 
372499 
372148 


60 

59 

58 

67 

56 

55 

54 

53 

52 

51 

50 

49 

48 

47 

46 

45 

44 

43 

42 

41 

40 

39 

38 

37 

36 

35 

34 

3: 

32 

31 

30 

29 

28 

27 

56 

25 

24 

23 

22 

21 

20 

19 
18 
17 
16 
15 
14 
13 
12 
11 

9 


I   1 


Cotaii". 


I    ''-''^-       I 


67  DeKrp/^s 


^ 

ixrs  AND  TANGENTS.   (23  Degrccs.j 

4i 

M. 

1    Sine 

I  «• 

Cosine   i  D. 

Tang 

D. 

CotaT.g.  1   1 

'^ 

9.591878 

496 

9.964026 

89 

9.627852 

585 

10.372148 

"60' 

1 

592176 

495 

963972 

89 

628203 

585 

371797 

59 

2 

592473 

495 

963919 

89 

628554 

585 

371446 

58 

3 

592770 

495 

963865 

90 

628905 

584 

371095 

57 

4 

593067 

494 

963811 

90 

629255 

584 

370745 

56 

5 

593363 

494 

963757 

90 

629606 

583 

370394 

55 

6 

593659 

493 

963704 

90 

629956 

583 

370044 

54 

7 

593955 

493 

963650 

90 

630306 

583 

369694 

53 

8 

594251 

493 

963596 

90 

630656 

583 

369344 

52 

9 

594547 

492 

963542 

90 

631005 

582 

368995 

51 

10 
11 

594842 

492 

963488 

90 
90 

631355 

582 

368645 

50 
49 

9.595137 

491 

9.963434 

9.631704 

582 

10.368296 

12 

595432 

491 

963379 

90 

632053 

581 

367947 

48 

13 

595727 

491 

963325 

90 

632401 

581 

367599 

47 

14 

596021 

490 

963271 

90 

632750 

581 

367250 

46 

lo 

596315 

490 

963217 

90 

633098 

580 

366902 

45 

16 

596609 

489 

963163 

90 

633447 

580 

366553 

44 

17 

596903 

489 

963108 

91 

633795 

580 

366205 

43 

18 

597196 

489 

963054 

91 

634143 

579 

365857 

42 

19 

597490 

488 

962999 

91 

634490 

579 

365510 

41 

20 

21 

597783 

488 

962945 

91 
91 

634838 

579 

365162 
10.364815 

40 
39 

9.598075 

487 

9.962890 

9.635185 

578 

22 

598368 

487 

962836 

91 

635532 

578 

364468 

38 

23 

598660 

487 

962781 

91 

63.5879 

578 

364121 

37 

24 

598952 

486 

962727 

91 

638226 

577 

363774 

36 

i.o 

599244 

486 

962672 

91 

636572 

577 

363428 

35 

26 

599536 

485 

962617 

91 

636919 

577 

363081 

34 

27 

599827 

485 

962562 

91 

637265 

577 

362735 

33 

28 

600118 

485 

962508 

91 

637611 

576 

362389 

32 

29 

600409 

484 

962453 

91 

637956 

576 

362044 

31 

30 
31 

600700 

484 

962398 

92 
92 

638302 

576 

361698 
10.361353 

30 
29 

9.600990 

484 

9.962343 

9.638647 

575 

32 

601280 

483 

962288 

92 

638992 

575 

361008 

28 

33 

601570 

483 

962233 

92 

639337 

575 

360663 

27 

34 

601860 

482 

962178 

92 

639682 

574 

360318 

26 

35 

602150 

482 

962123 

92 

640027 

574 

359973 

25 

36 

602439 

482 

962067 

92 

640371 

574 

359629 

24 

37 

602728 

481 

962012 

92 

640716 

573 

359284 

23 

38 

603017 

481 

961957 

92 

641060 

573 

358940 

22 

39 

603305 

481 

961902 

92 

641404 

573 

358596 

21 

40 
41 

603594 

480 

961846 

92 
92 

641747 

572 

358253 

20 
19 

9.603882 

480 

9.961791 

9.642091 

l?l 

10.357909 

42 

604170 

479 

961735 

92 

642434 

357566 

18 

43 

604457 

479 

961680 

92 

642777 

572 

357223 

17 

44 

604745 

479 

961624 

93 

643120 

571 

356880 

16 

45 

60.5032 

478 

961569 

93 

64.St63 

571 

356537 

15 

46 

605319 

478 

961513 

93 

643806 

571 

356194 

14 

47 

605606 

478 

961458 

93 

644148 

570 

355852 

13 

48 

605892 

477 

961402 

93 

644490 

570 

355510 

12 

49 

606179 

477 

961346 

93 

644832 

570 

355168 

11 

50 
51 

606465 

476 

961290 
9.961235 

93 
93 

645174 

569 

354826 
10.354484 

10 
9 

9  606751 

476 

9.645516 

569 

52 

607036 

476 

961179 

93 

645857 

569 

354143 

8 

53 

607322 

475 

961123 

93 

646199 

569 

353801 

7 

54 

607607 

475 

961067 

93 

646540 

568 

353460 

6 

55 

607892 

474 

961011 

93 

646881 

568 

353119 

5 

56 

608177 

474 

960955 

93 

647222 

568 

352778 

4 

57 

608461 

474 

960899 

93 

647562 

567 

352438 

3 

5;^ 

608745 

473 

960843 

94 

647903 

567 

352097 

2 

59 

609029 

473 

960786 

94 

648243 

567 

351757 

1 

60 

609313 

473 

960730 

94 

6485S3 

566 

351417 

0 

^ 

Cosine 

Sine    1 

Coiane. 

TanfT.   ,  M  | 

^  Degrees. 


42 

(24  DegreesO  a 

TABLE  OP  LOGARITHMIC 

IP 

Sine 

D. 

1   Cosine   1  D. 

'i'ang. 

D. 

Cotang.  1   1 

"o 

9.609313 

473 

9.960730 

94 

9.648.583 

566 

10.351417 

60 

1 

609597 

472 

960674 

94 

648923 

566 

351077 

59 

2 

6098S0 

472 

960618 

94 

649263 

566 

650737 

58 

3 

610164 

472 

960561 

94 

649602 

566 

350398 

57 

4 

610447 

471 

960505 

94 

649942 

565 

350058 

56 

5 

610729 

471 

960448 

94 

6.50281 

565 

349719 

55 

6 

611012 

470 

960392 

94 

650020 

565 

349380 

54 

7 

611294 

470 

960335 

94 

650959 

564 

3490il 

53 

8 

.  611576 

470 

960279 

94 

651297 

564 

348703 

52 

y 

611858 

469 

96-0222 

94 

651636 

564 

348364 

61 

10 

11 

612140 

469 

960165 

94 
95 

651974 

563 

348026 
10.347688 

60 

49 

9.612421 

469 

9.960109 

9.652312 

563 

12 

612702 

468 

960052 

95 

652650 

563 

347350 

48 

13 

612983 

468 

959995 

95 

652988 

563 

347012 

47 

14 

613264 

467 

959938 

95 

653326 

662 

346674 

46 

15 

613545 

467 

959882 

95 

653663 

562 

346337 

45 

Ifi 

613825 

467 

959825 

95 

654000 

562 

346000 

44 

17 

614105 

466 

959768 

95 

654337 

561 

345663 

43 

18 

614385 

466 

959711 

95 

654674 

561 

345326 

42 

19 

614665 

466 

959654 

95 

655011 

561 

344989 

41 

20 
21 

614944 

465 

959596 

95 
95 

655348 

561 

344652 
10.344316 

40 
39 

9.615223 

465 

9.959539 

9.655684 

560 

22 

615502 

465 

959482 

95 

656020 

560 

343980 

38 

23 

615781 

464 

959425 

95 

656356 

560 

343644 

37 

24 

616060 

464 

959368 

95 

656692 

559 

343308 

36 

25 

616338 

464 

959310 

96 

657028 

559 

342972 

36 

26 

616616 

463 

959253 

96 

657364 

559 

342636 

34 

27 

616894 

463 

959195 

96 

657699 

559 

342301 

33 

28 

617172 

462 

959138 

96 

6580,S4 

558 

341966 

32 

29 

617450 

462 

959081 

96 

658369 

558 

341631 

31 

30 

31 

617727 

462 

959023 

96 
96 

658704 

558 

341296 

30 

29 

9.618004 

461 

9.958965 

9.6.59039 

558 

10.340961 

32 

618281 

461 

958908 

96 

6.59373 

557 

340027 

28 

33 

618558 

461 

958850 

96 

659708 

.557 

340292 

27 

34 

618834 

460 

958792 

96 

660042 

557 

339958 

26 

35 

619110 

460 

958734 

96 

660376 

557 

339624 

25 

36 

619386 

460 

958677 

96 

660710 

556 

339290 

24 

37 

619662 

459 

958619 

96 

661043 

556 

338957 

23 

38 

619938 

459 

958561 

96 

661377 

556 

338623 

22 

39 

620213 

459 

958503 

97 

661710 

555 

338290 

21 

40 
41 

620488 

458 

958445 
9.9.58387 

97 
97 

662043 

555 

337957 
10.337624 

20 
19 

9.620763 

458 

9  662376 

555 

42 

621038 

457 

958329 

97 

662709 

554 

337291 

18 

43 

621313 

457 

958271 

97 

663042 

554 

336958 

17 

4-1 

621587 

457 

958213 

97 

663375 

654 

336625 

16 

45 

621861 

456 

y.581.54 

97 

663707 

554 

336293 

15 

46 

622135 

456 

958096 

97 

664039 

653 

335961 

14 

47 

622409 

456 

958038 

97 

664371 

663 

335629 

13 

48 

622682 

455 

957979 

97 

664703 

6.53 

335297 

12 

49 

622956 

455 

957921 

97 

665035 

663 

834965 

11 

50 
51 

623229 

455 

957863 
9.9.57804 

97 

97 

665366 

562 

334634 

10 
9 

9.623502 

454 

9.665697 

652 

10.334303 

52 

623774 

454 

957746 

98 

666029 

552 

333971 

8 

53 

624047 

454 

9.57687 

98 

666360 

651 

333640 

7 

54 

624319 

453 

957628  98 

666691 

551 

.333309 

6 

55 

624591 

453 

957570  98 

667021 

551 

332979 

5 

56 

624863 

453 

957511  98 

6673.52 

551 

332648 

4 

57 

625135 

452 

957452 

98 

667682 

550 

332318 

3 

58 

625406 

452 

957393 

98 

668013 

550 

331987 

2 

69 

625677 

452 

957.335 

98 

668343 

550 

331657 

1 

60 

625918 

451 

9572761 98 

668672 

550 

331328 

0 

1   Cosine 

1   Sine    1 

Colang. 

1 

1    I'ang.   1 M.  1 

65  Dc-grees. 


SINKS  A  XT)  TA^'al:^'TS.       (25  Degrees.) 


43 


M. 

Sine 

I). 

Cosine  |  D. 

1   Tang. 

D. 

Cotang.  j   1 

0 

9.625948 

451  , 

9.957276 

98 

9.668673 

550 

10. 3313271 

60 

1 

626219 

451 

957217 

98 

669002 

549 

330998 

59 

2 

626490 

451 

957158 

98 

669332 

549 

33066« 

58 

3 

626760 

450 

957099 

98 

669661 

549 

330339 

57 

4 

627030 

450 

957040 

98 

669991 

548 

3:'0009 

66 

5 

627300 

450 

956981 

98 

670320 

548 

329680 

55 

6 

627570 

449 

956921 

99 

670649 

548 

329351 

54 

7 

627840 

449 

956862 

99 

670977 

548 

329023 

53 

8 

628109 

449 

956803 

99 

671306 

547 

328894 

52 

9 

628378 

448 

956744 

99 

671634 

547 

328366 

51 

10 
11 

628647 
9.628916 

448 
447 

956684 

99 
99 

671963 

547 

328037 
10.327709 

50 
49 

9.956625 

9.672291 

547 

12 

629185 

447 

956566 

99 

672619 

546 

327381 

48 

13 

629453 

447 

956506 

99 

672947 

546 

327053 

47 

14 

629721 

446 

956447 

99 

673274 

546 

326726 

46 

16 

629989 

446 

956387 

99 

673602 

546 

326398 

45 

16 

630257 

446 

956327 

99 

673929 

545 

326071 

44 

17 

630524 

446 

956268 

99 

674257 

545 

326743 

43 

18 

630792 

445 

956208 

100 

674584 

545 

325416 

42 

19 

631059 

445 

956148 

100 

674910 

544 

325090 

41 

20 
21 

631326 

445 

956089 

100 
100 

675237 
9.675564 

544 
544 

324763 

40 
39 

9.631593 

444 

9.956029 

10.324436 

22 

631859 

444 

955969 

100 

675890 

544 

324110 

38 

23 

632125 

444 

955909 

100 

676216 

543 

323784 

37 

24 

632392 

443 

955849 

100 

676543 

543 

323457 

36 

25 

632658 

443 

955789 

100 

676869 

543 

323131 

35 

26 

632923 

443 

955729 

100 

677194 

543 

322806 

34 

27 

633189 

442 

955669 

100 

677520 

542 

322480 

33 

28 

633454 

442 

955609 

100 

677846 

542 

322154 

32 

29 

633719 

442 

955548 

100 

678171 

642 

321829 

31 

30 
31 

633984 

441 

955488 
9.955428 

100 
101 

678496 
9.678821 

542 
641 

321604 
10.321179 

30 
29 

9.634249 

441 

32 

634514 

440 

955368 

101 

679146 

541 

320864 

28 

33 

634778 

440 

955307 

101 

679471 

541 

320529 

27 

34 

635042 

MO 

955247 

101 

679795 

541 

320206 

20 

35 

635306 

439 

955186 

101 

680120 

640 

319880 

26 

36 

635570 

439 

955126 

101 

680444 

640 

319556 

24 

37 

635834 

439 

955065 

101 

680768 

540 

319232 

23 

38 

636097 

438 

955005 

101 

681092 

540 

318908 

22 

39 

636360 

438 

954944 

101 

681416 

539 

318584 

21 

40 
41 

636623 

438 

954883 
9  954823 

101 
101 

681740 

539 

318260 

20 
19 

9.636886 

43/ 

9.682063 

539 

10.317937 

42 

637148 

437 

954762 

101 

682387 

639 

317013 

18 

43 

637411 

437 

954701 

101 

682710 

538 

317290 

17 

44 

637673 

437 

954640 

101 

683033 

538 

316967 

16 

45 

637935 

436 

954579 

101 

683356 

638 

31 6644 

16 

46 

638197 

436 

954518 

102 

683679 

538 

316321 

14 

47 

638458 

436 

954457 

102 

684001 

537 

315999 

13 

48 

638720 

435 

954396 

102 

684324 

537 

315676 

12 

49 

638981 

435 

954335 

102 

684646 

537 

316354 

11 

50 

639242 

435 

954274 

102 

684968 

637 

315032 

10 

51 

9.639503 

434 

9.954213 

102 

9.685290 

636 

10.314710 

9 

52 

639764 

434 

954152 

102 

685612 

536 

314388 

8 

53 

640024 

434 

954090 

102 

685934 

536 

314066 

7 

54 

640284 

433 

954029 

102 

686255 

636 

313745 

6 

55 

640544 

433 

953968 

102 

686577 

535 

313423 

5 

56 

640804 

433 

953906 

102 

686898 

535 

313102 

4 

57 

641064 

432 

963845 

102 

687219 

535 

312781 

3 

58 

641324 

432 

953783 

102 

687640 

536 

312460 

2 

59 

641584 

432 

953722 

103 

687861 

534 

312139 

1 

60 

641842 

431 

953660 

103 

688182 

534 

3118IS 

0 

Co:^ine 

1   Sine   1 

Colang. 

Tan,. 

fu. 

64  Degrees. 


44 


(26  Degrees.)     a  table  of  logarithmic 


M. 

Sine 

D. 

Cosine   1  D. 

T... 

D 

1   Clang.   )    j 

0 

9.641842 

431 

9,9.53660 

103 

9.688182 

534 

10.311818 

60 

] 

642101 

431 

953599 

103 

688502 

534 

311498 

59 

2 

642360 

431 

053537 

103 

688823 

534 

311177 

58 

3 

642618 

430 

953475 

103 

689143 

533 

310857 

57 

4 

642877 

430 

953413 

103 

689463 

533 

310.537 

56 

5 

643135 

430 

953352 

103 

689783 

533 

310217 

55 

6 

643393 

430 

953290 

103 

690103 

533 

309897 

54 

7 

643650 

429 

953228 

103 

690423 

533 

309577 

53 

8 

643908 

429 

953166 

103 

690742 

532 

309258 

52 

9 

644165 

429 

953104 

103 

691062 

532 

308938 

51 

10 

11 

644423 

428 

953042 

103 
104 

691381 

532 

308619 
10.308300 

50 
49 

9.644680 

428 

9.9.529S0 

9.691700 

531 

12 

644936 

428 

952918 

104 

692019 

531 

307981 

48 

13 

645193 

427 

952855 

104 

692338 

531 

307662 

47 

14 

645450 

427 

952793 

104 

692856 

531 

307344 

46 

15 

645706 

427 

952731 

104 

692975 

531 

307025 

45 

16 

645962 

426 

952669 

104 

693293 

530 

306707 

44 

17 

646218 

426 

952606 

104 

693612 

530 

306388 

43 

18 

646474 

426 

952544 

104 

693930 

530 

306070 

42 

19 

646729 

425 

952481 

104 

694248 

530 

305752 

41 

20 

6469841 

425 

952419 
9.9523.56 

104 
104 

694566 

529 

305434 

40 
39 

9.647240; 

425 

9.694883 

529 

10.305117 

•>■■> 

647494 

424 

952294 

104 

695201 

529 

304799 

38 

•73 

647749' 

424 

952231 

104 

695518 

529 

304482 

37 

2-1 

648004 

424 

952168 

105 

695836 

529 

304164 

36 

'/5 

648258 

424 

952106 

105 

696153 

528 

303847 

35 

2'J 

648512 

423 

952043 

105 

696470 

528 

303530 

34 

27 

648766 

423 

951980 

105 

696787 

528 

303213 

33 

28 

649020 

423 

951917 

105 

697103 

528 

302897 

32 

29 

649274 

422 

951854 

105 

697420 

527 

302580 

31 

30 
31 

649527 

422 

951791 

105 
105 

697736 

527 

302264 

30 
29 

9.649781 

422 

9.951728 

9.698053 

527 

10.301947 

32 

650034 

422 

951665 

105 

698369 

527 

301631 

28 

3.3 

650287 

421 

951602 

105 

698685 

526 

301315 

27 

34 

650.539 

421 

951.5.39 

105 

699001 

526 

300999 

26 

35 

650792' 

421 

951476 

105 

699316 

526 

300684 

25 

36 

651044 

420 

951412 

105 

699632 

526 

300368 

24 

37 

651297 

420 

951349 

106 

699947 

526 

300053 

23 

38 

051.549 

420 

951286 

106 

700263 

525 

299737 

22 

39 

651800 

419 

951222 

106 

700578 

525 

299422 

21 

40 
4\ 

652052 

419 

951159 

106 
106 

700893 

525 

299107 
10.298792 

20 
19 

9.652304 

419 

9.951096 

9.701208 

524 

42 

652555 

418 

951032 

106 

701523 

524 

298477 

18 

43 

652806 

418 

950968 

106 

7018.37 

524 

298163 

17 

44 

653057 

418 

9.50905 

106 

702152 

524 

297848 

16 

45 

653308 

418 

950841 

106 

702466 

524 

297534 

15 

46 

653558 

417 

950778 

106 

702780 

523 

297220 

14 

47 

653808 

417 

950714 

106 

703095 

523 

296905 

13 

48 

654059 

417 

9506.50 

106 

703409 

523 

296591 

12 

49 

654309 

416 

950586 

106 

703723 

.523 

296277 

11 

50 
51 

6.54558 

416 

950522 
9.950458 

107 
107 

704036 

522 

295964 
10.295650 

10 
9 

9.654808 

416 

9.7043.50 

522 

52 

655058 

416 

950394 

107 

704663 

522 

295337 

8 

53 

655307 

415 

950330 

107 

704977 

522 

295023 

7 

54 

655556 

415 

950266 

107 

705290 

522 

294710 

6 

55 

655805 

415 

950202 

107 

705603 

521 

294397 

5 

56 

656054 

414 

950138 

107 

705916 

.521 

294084 

4 

57 

656302 

414 

950074 

107 

706228 

521 

293772 

3 

58 

656551 

414 

950010 

10-^ 

706541 

521 

293459 

2 

59 

656799 

413 

949945 

107 

706854 

521 

293146 

1 

60 

657047 

413 

949881 

107 

707166 

520 

292834 

0 

CoLiiiie 

1    ^i..e   1 

Cntani|. 

1 

j   Tang.    j  M.  | 

fi3  Degrees. 


sixNEs  AND  TA.NGENTS.   (27  Pegrcei 

0 

45 

M_ 

Sine   1 

D 

Cosine   i  D. 

Tang. 

D. 

Cotang.   ,   1 

"o" 

P.  657047 

413 

9.949881 

107 

9.707166 

520 

10.292834 

60 

1 

657295 

413 

949816 

107 

707478 

520 

292522 

5Q 

2 

657542 

412 

949752 

107 

707790 

520 

292210 

f^ 

3 

657790 

412 

949688 

108 

708102 

520 

291898 

57 

4 

0JSO37 

412 

949623 

108 

708414 

519 

291586 

56 

5 

658284 

412 

949558 

108 

708726 

519 

291274 

55 

6 

658531 

411 

949494 

108 

709037 

519 

290903 

54 

7 

658778 

411 

949429 

108 

709349 

519 

290651 

53 

8 

659025 

411 

949364 

108 

709660 

519 

290340 

52 

9 

659271 

410 

949300 

108 

709971 

518 

290029 

51 

10 
11 

659517 

410 

949235 
9.949170 

108 
108 

710282 

518 

289718 

50 
49 

9.659763 

410 

9.710593 

518 

10.289407 

12 

660009 

409 

949105 

108 

710904 

518 

289096 

48 

13 

660255 

409 

949040 

108 

711215 

518 

288785 

47 

14 

660501 

409 

948975 

108 

711.525 

5.17 

288475 

46 

15 

660746 

409 

948910 

108 

711836 

517 

288164 

45 

16 

660991 

408 

948845 

108 

712146 

517 

287854 

44 

17 

661236 

408 

948780 

109 

712456 

517 

287544 

43 

18 

661481 

408 

948715 

109 

712766 

516 

287234 

42 

19 

661726 

407 

948650 

109 

713076 

516 

286924 

41 

20 
21 

661970 
9.662214 

407 
407 

948584 

109 
109 

713386 

516 

286614 
10.286304 

40 
39 

9.948519 

9.713696 

516 

22 

662459 

407 

948454 

109 

714005 

516 

285995 

38 

23 

662703 

406 

948388 

109 

714314 

515 

285686 

37 

24 

662946 

406 

948323 

109 

714624 

^:5 

285376 

36 

25 

663190 

406 

948257 

109 

714933 

51b 

285067 

35 

26 

663433 

405 

948192 

109 

715242 

515 

284758 

34 

27 

663677 

405 

948126 

109 

715551 

514 

284449 

33 

28 

663920 

405 

948060 

109 

715860 

514 

284140 

32 

29 

664163 

405 

947995 

110 

716168 

514 

283832 

31 

30 

664406 

404 

947929 

110 

716477 

514 

283523 

30 

31 

9 . 664648 

404 

9.947863 

110 

9.716785 

514 

10.283215 

29 

32 

664891 

404 

947797 

110 

717093 

513 

282907 

28 

33 

665133 

403 

947731 

110 

717401 

513 

282599 

27 

34 

665375 

403 

947665 

110 

717709 

513 

282291 

26 

36 

665617 

403 

947600 

110 

718017 

513 

281983 

25 

36 

665859 

402 

947533 

110 

718325 

518 

281670 

24 

37 

666100 

402 

947467 

110 

718633 

512 

281367 

23 

38 

666342 

402 

947401 

110 

718940 

512 

281060 

22 

39 

666583 

402 

947335 

110 

719248 

512 

280752 

21 

40 
41 

666824 

401 

947269 
9.947203 

110 
110 

719555 

512 

280445 

20 
19 

9.667065 

401 

9.719862 

512 

10.280138 

42 

667305 

401 

947136 

111 

720169 

511 

279831 

18 

43 

667546 

401 

947070 

111 

720476 

511 

279524 

17 

44 

667786 

400 

947004 

111 

720783 

511 

279217 

16 

45 

668027 

400 

946937 

111 

721089 

511 

278911 

15 

46 

668267 

400 

946871 

111 

721396 

511 

278604 

14 

47 

668506 

399 

946804 

111 

721702 

510 

278298 

13 

48 

668746 

399 

946738 

111 

722009 

510 

277991 

12 

49 

668986 

399 

946671 

111 

722315 

510 

277685 

11 

50 
51 

669225 

399 

946604 

111 
111 

722621 

510 

277379 

10 
9 

9.669464 

398 

9.946538 

9.722927 

510 

10.277073 

52 

669703 

398 

946471 

111 

723232 

509 

276768 

8 

53 

669942 

398 

946404 

111 

723538 

509 

276462 

7 

54 

670181 

397 

946337 

111 

723844 

509 

276156 

6 

55 

670419 

397 

946270 

112 

724149 

509 

275851 

5 

56 

670658 

397 

946203 

112 

724454 

509 

275546 

4 

57 

670896 

1  897 

946136 

112 

724759 

508 

275241 

3 

58 

671134 

396 

946069 

112 

725065 

508 

274935 

2 

59 

671372 

396 

946002 

112 

725369 

508 

274631 

1 

= 

671609 

396 

945935 

112 

725674 

508 

274326 

0 

, 

Ci>suie 

) 

Sine    1 

Cotang. 

1    Tang.  |M.  1 

62  Degrees. 


46 


(28  Degrees. j     a  table   of  logarithmic 


M 

.  1    Sine 

1   !>• 

I   Cosine  |  D 

1   Taut-. 

1   n. 

1   Cotaui.   j 

1 

9.67160 

^      396 

9.94593. 

31  1121  9.7256741  508 

10.27432' 

J|60 

1 

67184 

7      395 

94.5868  112   725979   508 

27402 

I  59 

2 

67208 

i   395 

945800  112   726284   507 

273716  58 

3 

67232 

I   395 

945733  112   726588   507 

273412  57 

4 

67255f 

i      395 

94566f 

112|   7268921  507 

2731 OS 

)  56 

5 

67279. 

3   394 

94559.^ 

lis 

I       727]  971  507 

27280C 

J  55 

6 

67303$ 

I      394 

945.531 

lis 

72750] 

507 

272499 

54 

7 

67326^ 

i      3G4 

945464 

iia 

72780£ 

506 

272 19S 

53 

8 

67350^ 

)   394 

945396 

113 

728 lOS 

506 

27^891 

52 

9 

67374] 

393 

945328 

113 

728412 

506 

271588 

51 

10 
11 

67397'- 
9.67421S 

^   393 

945261 
9.945193 

113 
113 

728716 

506 

271284 

50 
49 

I      393 

9.729020 

506 

10.270980 

12 

67444S 

392 

945125 

113 

729323 

505 

270677 

48 

13 

674684 

392 

945058 

113 

729626 

505 

270374 

47 

14 

674919 

392 

944990 

1  113 

729929 

505 

270071 

46 

15 

6751.55 

392 

944922 

113 

730233 

505 

269767 

45 

16 

675390 

391 

944854 

113 

730535 

505 

269465 

44 

17 

675624 

391 

944786 

113 

730838 

504 

269162 

43 

18 

67.5859 

391 

944718 

113 

731141 

504 

268859 

42 

19 

676094 

391 

944650 

113 

731444 

504 

268556 

41 

20 

676328 
9.676562 

390 

944582 

114 
114 

731746 
9.732048 

504 
504 

268254 

40 
39 

21 

390 

9.944514 

10.267952 

22 

676796 

390 

944446 

114 

7.32351 

503 

267649 

38 

23 

677030 

390 

944377 

114 

732653 

503 

267347 

37 

24 

677264 

389 

944309 

114 

732955 

503 

267045 

36 

25 

677498 

389 

944241 

114 

733257 

503 

266743 

35 

26 

677731 

389 

944] 72 

114 

733558 

503 

266442 

34 

27 

677964 

388 

944104 

114 

733860 

502 

266140 

33 

28 

678197 

388 

944036 

114 

734162 

502 

2658.38 

32 

29 

678430 

388 

943967 

114 

734463 

502 

265537 

31 

30 
31 

678683 

388 

943899 
9.943830 

114 
114 

734764 

502 

265236 
10. 26493 i 

30 

29 

9  678895 

387 

9.7.35066 

502 

32 

679128 

387 

943761 

114 

735367 

502 

264633 

28 

33 

679360 

387 

943693 

115 

735668 

501 

264332 

27 

34 

679592 

387 

943624 

115 

735969 

501 

264031 

26 

35 

679824 

386 

943555 

115 

736269 

501 

263731 

25 

36 

680056 

386 

943486 

115 

736570 

501 

263430  24  1 

37 

680288 

386 

943417 

115 

736871 

501 

263129 

23 

38 

680519 

385 

943348 

115 

737171 

500 

262829 

22 

39 

680750 

385 

943279 

115 

737471 

500 

262529 

21 

40 

680982 

385 
385 

943210 

115 
115 

737771 
9.738071 

500 

500 

262229 

20 
19 

41 

9.681213 

9.943141 

10.261929 

42 

681443 

384 

943072 

115 

738371 

500 

261629 

18 

43 

681674 

384 

943003 

115 

738671 

499 

261329 

17 

44 

681905 

384 

942934 

115 

738971 

499 

261029 

16 

45 

682135 

384 

942864 

115 

739271 

499 

260729 

15 

46 

682365 

383 

9427951 

116 

739570 

499 

260430 

14 

47 

682595 

383 

942726 

116 

739870 

499 

260130 

13 

48 

682825 

383 

942656 

116 

740169 

499 

259831 

12 

49 

683055 

383 

942587 

116 

740468 

498 

259532 

11 

50 
51 

683284 
9.683514 

382 

942517 
9.942448 

116 
116 

740767 
9.741066 

498 
498 

259233 

10 
9 

382 

10.258934 

32 

683743 

382 

942378 

116 

741365 

498 

258635 

8 

53 

683972 

382 

942308 

116 

741664 

498 

258336 

7 

54 

684201 

381 

942239 

116 

741962 

49? 

258038 

6 

55 

684430 

381 

942169 

116 

742261 

497 

257739 

5 

56 

684658 

381 

9420991 

116 

742559 

497 

257441 

4 

57 

684887 

380 

942029 

116 

742858 

497 

2.57142 

3 

58 

685115 

380 

941959 

116 

743156 

497 

256844 

2 

59 

685343 

380 

9418891 

117 

743454 

497 

256546 

1 

60 

685571 

380 

9418191 

117 

743752 

496  1 

256248 

0 

u. 

Cosine   1 

...J 

Si  no   1    j 

Cotang. 

1 

Tang.   1  M.  | 

SINES  AND   TANCxENTS. 

(29  Degrees 

.; 

47 

J>L_ 

Sine 

D. 

Cosine   |  D.  |   Taii^.   | 

D.   1 

Cotang.   1    1 

0 

9.685571 

380 

9.941819 

117 

9.743752 

496 

10.256218 

60 

1 

685799 

379 

941749 

117 

744050 

496 

255950 

59 

2 

686027 

379 

941679 

117 

744348 

496 

255652 

58 

3 

68C254 

379 

941609 

117 

744645 

496 

25.5355 

57 

4 

686482 

379 

941539 

117 

744943 

496 

255057 

56 

5 

686709 

378 

941469 

117 

745240 

496 

254730 

55 

6 

086936 

378 

941398 

117 

745538 

495 

2544G2 

54 

7 

687163 

378 

941328 

117 

745835 

495 

254165 

53 

8 

6^7389 

878 

941258 

117 

746132 

495 

2538G8 

52 

9 

687616 

377 

941187 

117 

746429 

495 

253571 

51 

10 
11 

687843 
9.688069 

377 
377 

941117 
9.941046 

117 
118 

746726 

495 

253274 
10.252977 

50 
49 

9.747023 

494 

12 

688295 

377 

940975 

118 

747319 

494 

252681 

48 

13 

688581 

376 

940905 

118 

747616 

494 

252384 

47 

14 

688747 

376 

940834 

118 

747913 

494 

252087 

4C 

15 

688972 

376 

940763 

118 

748209 

494 

251791 

45 

16 

689198 

376 

940693 

118 

748505 

493 

251495 

4^1 

17 

689423 

375 

940622 

118 

748801 

493 

251199 

43 

18 

689648 

375 

940551 

118 

749097 

493 

250903 

42 

19 

689873 

375 

940480 

118 

749393 

493 

250607 

41 

20 
21 

690098 
9 . 690323 

375 

374 

940409 

118 
118 

749689 

493 

250311 
10.250015 

40 
39 

9.940338 

9.749985 

493 

22 

690548 

374 

940267 

118 

750281 

492 

249719 

38 

23 

690772 

374 

940196 

118 

750576 

492 

249424 

37 

24 

690996 

374 

940125 

119 

750872 

492 

249128 

36 

25 

691220 

373 

940054 

119 

751167 

492 

248833 

35 

26 

691444 

373 

939982 

119 

751462 

492 

248538 

34 

27 

691668 

373 

939911 

119 

7517.57 

492 

248243 

33 

28 

691892 

373 

939840 

119 

7520.'>2 

491 

247948 

32 

29 

692115 

372 

939768 

119 

752347 

491 

247653 

31 

30 

692339 

372 

989697 

113 

752642 

491 

247358 

30 

31 

9 . 692562 

372 

9.939625 

119 

9 . 752937 

491 

10.247063 

29 

32 

692785 

371 

939554 

119 

753231 

491 

2467()9 

28 

33 

693008 

371 

939482 

119 

753526 

491 

246474 

27 

34 

693231 

371 

939410 

119 

753820 

490 

246180 

26 

35 

693453 

371 

939339 

119 

7.54115 

490 

245885 

25 

36 

693676 

370 

939267 

120 

7.54409 

490 

245591 

24 

37 

693898 

370 

939195 

120 

754703 

490 

245297 

23 

38 

694120 

370 

9.39123 

120 

7.54997 

490 

245003 

22 

39 

694342 

370 

939052 

120 

755291 

490 

244709 

2] 

40 

694564 

369 

93S9S0 

120 

755585 

489 

244415 

20 

41 

9.694786 

369 

9.938908 

120 

9.755878 

489 

10.244122 

19 

42 

695007 

369 

938836 

120 

756172 

489 

243828 

18 

43 

695229 

360 

938763 

120 

756465 

489 

243535 

17 

44 

695450 

I  368 

938691 

120 

756759 

489 

243241 

16 

45 

695671 

368 

938619 

120 

757052 

489 

242948 

15 

46 

695892 

i  .368 

938547 

120 

757345 

488 

242655 

14 

47 

696113 

;      368 

938475 

120 

757638 

488 

242362 

13 

48 

696334 

j  .367 

938402 

121 

757931 

488 

242069 

12 

49 

6965.54 

'  367 

938330 

121 

758224 

488 

241776 

11 

50 
51 

696775 

\      367 

938258 

121 

1  121 

7.58517 

488 

241483 
10.24119C 

10 
0 

9.696995 

;  367 

9.938185 

9.758810 

488 

52 

697215 

1  366 

9.38113 

121 

759102 

487 

24089S 

8 

53 

697435 

366 

93804(1 

i  121 

759395 

487 

240605 

7 

54 

69765^ 

[\     366 

937967 

121 

759687 

487 

240311 

6 

55 

69787^ 

[\     366 

937895 

121 

759979 

487 

240021 

5 

56 

69809^ 

H  365 

937825 

J  121 

760272 

487 

23972S 

4 

57 

6983K 

J   365 

93774c 

)  121 

760564 

487 

239436 

3 

58 

698535 

I      365 

93767f 

)  121 

760856 

486 

23914^ 

2 

59 

•  69875 

I   365 

93760^ 

['   121 

761148 

486 

238855 

'   i 

60 

69897 

3   364 

1   93753] 

1  121 

76143J: 

486 

238.561 

J_o 

]   Cosine 

1 

Sine    1    1  Coiaiig. 

1 

1    Tang. 

']"m7 

ft 

0  Def; 

reea. 

48 

(30  Dcgr 

ees.)  A 

TABLE  OF  LOGAniUlMlr 

~ 

Sine    1 

n.  1 

("ot;ine    D.  | 

Tani;.   | 

D.   1 

Cot  .nit:.   1 

0 

9.608970 

364 

9.937531 

121 

9.761439 

486 

10.2385611  60 

1 

699189 

364 

9374.58 

122 

761731 

486 

238269 

59 

2 

699407 

364 

937385 

122 

762023 

486 

237977 

58 

3 

699626 

364 

937312 

122 

762314 

486 

237686 

57 

4 

699844 

363 

937238 

122 

762606 

485 

237394 

56 

5 

700062 

363 

937165 

122 

762897 

485 

237103 

55 

6 

70;)280 

363 

937092 

122 

763188 

485 

236812 

54 

7 

700498 

363 

937019 

122 

763479 

485 

23652] 

53 

8 

700716 

363 

936946 

122 

763770 

485 

236230 

52 

9 

700933 

362 

936872 

122 

764061 

485 

235939 

51 

10 
11 

701151 

362 

936799 
9.936725 

122 

122 

764352 

484 

235648 
10.235357 

50 
49 

9.701368 

362 

9.764643 

484 

12 

701. 585 

362 

936652 

123 

764933 

484 

235067 

48 

13 

701802 

361 

936578 

123 

765224 

484 

.  234776 

47 

14 

702019 

361 

936505 

123 

765514 

484 

234486 

46 

15 

702236 

361 

936431 

123 

765805 

484 

234195 

45 

16 

702452 

361 

936357 

123 

766095 

484 

233905 

44 

17 

702669 

360 

936284 

123 

766385 

483 

233615 

43 

18 

702885 

360 

936210 

123 

766675 

483 

233325 

42 

19 

703101 

360 

936136 

123 

766965 

483 

233035 

41 

20 
21 

703317 
9.703533 

360 
359 

936062 
9.935988 

123 
123 

767255 

483 

232745 

40 
39 

9.767545 

483 

10.232455 

22 

703749 

359 

935914 

123 

767834 

483 

232166 

38 

23 

703964 

359 

935840 

123 

768124 

482 

231876 

37 

24 

704179 

359 

935766 

124 

768413 

482 

231587 

36 

25 

704395 

359 

935692 

124 

768703 

482 

231297 

35 

26 

704610 

358 

935618 

124 

768992 

482 

231008 

34 

27 

704825 

358 

935543 

124 

769281 

482 

230719 

33 

28 

705040 

358 

935469 

124 

769570 

482 

230430 

32 

29 

705254 

358 

93.5395 

124 

769860 

481 

230140 

31 

30 
31 

705469 

3.57 

935320 
9.935246 

124 
124 

770148 

481 

229852 

30 

29 

9  705683 

357 

9.770437 

481 

10.229.563 

32 

705898 

357 

935171 

124 

770726 

481 

229274 

28 

33 

706112 

357 

935097 

124 

771015 

481 

228985 

27 

34 

706326 

356 

935022 

124 

771303 

481 

228697 

26 

35 

706539 

356 

934948 

124 

771592 

481 

228408 

25 

36 

700753 

356 

934873 

124 

771880 

480 

228120 

24 

37 

706967 

356 

934798 

125 

772168 

480 

227832 

23 

38 

707180 

355 

934723 

125 

772457 

480 

227543 

22 

39 

707393 

355 

934649 

125 

772745 

480 

227255 

21 

40 
41 

707606 

355 

934574 
9.934499 

125 
125 

773033 

480 

226967 
10.226679 

20 
19 

9.707819 

355 

9.773321 

480 

42 

708032 

354 

934424 

125 

773608 

479 

226392 

18 

43 

708245 

3.54 

934349 

125 

773896 

479 

226104 

17 

44 

708458 

354 

934274 

125 

774184 

479 

225816 

16 

45 

708670 

354 

934199 

125 

774471 

479 

225,529 

15 

46 

708882 

353 

934123 

125 

774759 

479 

225241 

14 

47 

709094 

353 

934048 

125 

775040 

479 

224954 

13 

48 

709306 

353 

933973 

125 

775333 

479 

224667 

12 

49 

709518 

353 

933898 

126 

775621 

478 

224379 

11 

50 
51 

709730 

353 

933822 
9.933747 

126 
126 

775908 

478 

224092 

10 
9 

9  709941 

352 

9.776195 

478 

10.223805 

52 

710153 

352 

933671 

126 

776482 

478 

223518 

8 

53 

710364 

352 

933596 

126 

776769 

478 

223231 

7 

54 

710575 

352 

933520 

126 

777055 

478 

222945 

6 

55 

710786 

351 

933445 

126 

777342 

478 

222658 

5 

56 

710997 

351 

933369 

126 

777628 

477 

222372 

4 

57 

711208 

351 

933293 

126 

777915 

477 

22208.'= 

3 

58 

711419 

351 

933217 

126 

778201 

477 

22179S 

2 

59 

711629 

350 

933141 

126 

778487 

477 

221512 

.,  1 

k60 

711839 

350 

933066 

12C 

778774 

477 

221226 

J    0 

I     I 


59  l^egiecs 


S1?JES  AND  TaNGE^!T.S. 

(31  D 

egrrees 

J 

49 

M.  i 

Sine 

D.   1 

Cosine   {  D.  | 

Taim.  1 

D.-  1 

Cutang.   I 

0 

9  711839 

350 

9.933066 

126 

9.778774 

477 

10.221226  60 

1 

/I 2050 

350 

932990 

127 

779060 

477 

220940  59 

2 

712260 

350 

932914 

127 

779346 

476 

220654  58 

3 

712469 

349 

932838 

127 

779632 

476 

220368 

57 

4 

712679 

349 

932762 

127 

779918 

476 

220082 

56 

5 

712889 

349  1 

932685 

127 

780203 

476 

219797 

55 

6 

713098 

349  1 

932609 

127 

780489 

476 

219511 

54 

7 

713308 

349 

932533 

127 

780775 

476 

219225 

53 

8 

713517 

348 

932457 

127 

781060 

476 

218940 

52 

9 

713726 

348 

932380 

127 

781346 

475 

218654 

51 

10 
11 

713935 

348 

932304 
9.932228 

3  27 
127 

781631 

475 

218369 

50 
49 

9.714144 

348  1 

9.7819161 

475 

10.218084 

12 

714352 

.347 

932151 

127 

782201 

475 

217799 

48 

13 

714561 

347 

932075 

128 

782486 

475 

217514 

47 

14 

714769 

347 

931998 

128 

782771 

475 

217229 

46 

15 

714978 

347 

931921 

128 

783056 

475 

216944 

45 

16 

715186 

347 

931845 

128 

783341 

475 

216659 

44 

17 

715394 

346 

931768 

128 

783626 

474 

216374 

43 

18 

715602 

346 

931691 

128 

783910 

474 

216090 

42 

19 

715809 

346 

931614 

128 

784195 

474 

215805 

41 

20 

2i 

716017 

346 

931537 

128 
128 

784479 

474 

21.5521 

40 
39 

9.716224 

345 

9.931460 

9.784764 

474 

10.215236 

22 

716432 

345 

931383 

128 

785048 

474 

214952 

3S 

23 

716639 

345 

931306 

128 

785332 

473 

214668 

37 

24 

716846 

345 

931229 

129 

785616 

473 

214384 

36 

25 

717053 

345 

931152 

129 

785900 

473 

214100 

35 

26 

717259 

344 

931075 

129 

786184 

473 

213816 

34 

27 

717466 

344 

930998 

129 

786468 

473 

213532 

33 

28 

717673 

344 

930921 

129 

786752 

473 

213248 

32 

29 

717879 

344 

930843 

129 

787036 

473 

212964 

31 

30 

31 

718085 

343 

930766 

129 
129 

787319 

472 

212681 

30 

29 

9.718291 

343 

9.930688 

9.787603 

472 

10.212397 

32 

718497 

343 

930611 

129 

787886 

472 

212114 

28 

33 

718703 

343 

930533 

129 

788170 

472 

211830 

27 

34 

718909 

343 

930456 

129 

788453 

472 

211547 

26 

35 

719114 

342 

930378 

129 

788736 

472 

211264 

25 

36 

719.320 

342 

930300 

130 

789019 

472 

210981 

24 

37 

719525 

342 

930223 

130 

789302 

471 

210698 

23 

38 

719730 

342 

930145 

130 

789585 

471 

210415 

22 

39 

719935 

341 

930067 

130 

789868 

471 

210132 

21 

40 
41 

720140 

341 

929989 
9.929911 

130 
130 

790151 

471 

209849 

20 
19 

9.720345 

341 

9.790433 

471 

10.209567 

42 

720549 

341 

929833 

130 

790716 

471 

209284 

18 

43 

720754 

340 

929755 

130 

790999 

471 

209001 

17 

44 

720958 

340 

929677 

130 

791281 

471 

208719 

16 

45 

721162 

340 

929599 

130 

791563 

470 

208437 

15 

40 

721366 

340 

929521 

130 

791846 

470 

208154 

14 

47 

721570 

340 

929442 

130 

792128 

470 

207872 

13 

48 

721774 

339 

929364 

131 

792410 

470 

207590 

12 

49 

721978 

339 

929286 

131 

792692 

470 

207308 

11 

50 
51 

722181 
9.722385 

339 
339 

929207 

131 
131 

792974 

470 

207026 

10 
9 

9.929129 

9.793256 

470 

10.206744 

52 

722588 

339 

929050 

131 

793538 

469 

206462 

8 

53 

722791 

338 

928972 

131 

793819 

1  469 

206181 

7 

51 

72299^ 

338 

928893 

131 

794101 

1  469 

205899 

6 

55 

723197 

338 

928815 

131 

794383 

i  469 

205617 

5 

56 

723400 

338 

928736 

131 

794664 

i  469 

205336 

4 

57 

723603 

1  337 

928657 

131 

794945 

469 

205055 

3 

58 

723805 

!  337 

928578 

131 

795227 

469 

204773 

2 

59 

724007 

1  337 

928499 

131 

795508 

468 

204492 

1 

60 

72421C 

1  337 

928420 

131 

i   795789 

1  468 

2042 li 

0 

Ciisiiie 

1 

1   Sine   1 

1   Coiaiii;. 

1    . 

Tang.    j  M.  1 

58  Degrees 


*., 


M) 

(3 

2  Degrees.)  a 

TABLE  OF  I^OGAEITII.MIC 

nr 

1   Sii.c 

D. 

1   Cosine   |  D. 

1   Tung. 

f   D. 

I   Coiang.  1   1 

0 

9.724210 

337 

9 . 928420 

132 

9.795789 

468 

10.204211 

.60 

1 

724412 

337 

928342 

132 

796070 

468 

203930 

59 

2 

724614 

336 

928263 

132 

796351 

468 

203649 

58 

3 

724816 

336 

928183 

132 

796632 

468 

203368 

57 

4 

725017 

335 

928104 

132 

796913 

468 

203087 

56 

6 

725219 

336 

928025 

132 

797194 

468 

202806 

55 

6 

725420 

335 

927946 

132 

797475 

468 

202525 

54 

7 

725622 

335 

927867 

132 

797755 

468 

202245 

53 

8 

725823 

335 

927787 

132 

798036 

467 

201964 

52 

9 

726024 

335 

927708 

132 

798316 

467 

201684 

51 

10 
11 

726225 

335 

927629 

132 
132 

798596 

467 

201404 
10.201123 

50 
49 

9.726426 

334 

9.927.549 

9.798877 

467 

12 

726626 

334 

927470 

133 

799157 

467 

200843 

48 

13 

726827 

334 

927390 

1.33 

799437 

467 

200563 

47 

14 

727027 

334 

927310 

133 

799717 

467 

200283 

46 

15 

727228 

334 

927231 

133 

799997 

466 

200003 

45 

16 

727428 

333 

92T151 

133 

800277 

466 

199r23 

44 

17 

727628 

333 

927071 

133 

800557 

466 

199443 

43 

18 

727828 

333 

926991 

133 

800836 

466 

199164 

42 

19 

728027 

333 

926911 

133 

801116 

466 

198884 

41 

20 

21 

728227 

333 

926831 

133 
133 

801396 

466 

198604 

40 
39 

9.728427 

332 

9.92675] 

9.801675 

466 

10.198325 

22 

728626 

332 

926671 

133 

8019.55 

466 

198045 

38 

23 

728825 

332 

926591 

133 

802234 

465 

197766 

37 

24 

729024 

332 

926511 

134 

802513 

465 

197487 

36 

25 

729223 

331 

926431 

134 

802792 

465 

197208 

35 

26 

729422 

,331 

926351 

134 

803072 

465 

196928 

3t 

27 

729621 

331 

926270 

134 

803351 

465 

196649 

33 

28 

729820 

331 

926190 

134 

803630 

465 

196370 

32 

29 

7.30018 

330 

926110 

134 

803908 

465 

196092 

31 

30 

730216 

330 

926029 

134 

804187 

465 

195813 

30 

31 

9.730415 

330 

9.92.5949 

134 

9.804466 

464 

10.195534 

29 

32 

730613 

3.30 

925868 

134 

804745 

464 

1952.55 

28 

33 

730811 

330 

925788 

134 

80,5023 

464 

194977 

27 

34 

731009 

329 

925707 

134 

805302 

464 

194698 

26 

35 

731206 

329 

925626 

134 

805580 

464 

194420 

25 

36 

731404 

329 

925545 

135 

80.5859 

464 

194141 

24 

37 

731602 

329 

925465 

135 

806137 

464 

193863 

23 

38 

731799 

329 

925384 

135 

806415 

463 

193585 

22 

39 

731996 

328 

92.5303 

135 

806693 

463 

193307 

21 

40 
41 

732193 

328 

925222 
9.925141 

135 
135 

806971 

463 

193029 

20 
19 

9.732390 

328 

9.807249 

463 

10.192751 

42 

732587 

328 

925060 

135 

807527 

463 

192473 

18 

43 

732784 

328 

924979 

135 

807805 

463 

192195 

17 

44 

732980 

327 

924897 

135 

808083 

463 

191917 

16 

45 

733177 

327 

924816 

135 

808361 

463 

191639 

15 

46 

733373 

327 

924735 

136 

808638 

462 

191362 

14 

47 

733569 

327 

924654 

136 

808916 

462 

191084 

I -3 

48 

733765 

327 

924572 

136 

809193 

462 

190807 

12 

49 

733961 

326 

924491 

136 

809471 

462 

190529 

11 

50 
51 

734157 

326 

924409 

136 
136 

809748 

462 

190252 

10 
9 

9.734353 

326 

9.924328 

9.810025 

462 

10.1899751 

52 

734549 

326 

924246 

136 

810302 

462 

189698] 

8 

53 

734744 

325 

924164 

136 

810580 

462 

1894201 

7 

54 

734939 

325 

924083 

136 

810857 

462 

189143 

6 

55 

735135 

325 

924001 

136 

811134 

461 

188866 

5 

56 

735330 

325 

923919 

136 

811410 

461 

188590 

4 

67 

735525 

325 

923837 

136 

811687 

461 

188313 

3 

58 

735719 

324 

923755 

137 

811964 

461 

188036 

2 

59 

735914 

324 

923673 

137 

812241 

461 

187759 

1 

60 

736 1 09 

324 

923591 

137 

812517 

461 

187483 

0 

n; 

Cosine 

1 

Sine   1    i 

Cotang.  1 

Tang.   |M.| 

57  Degree^. 


s 

I  ,;S  ASD    TA.^aE^-TS 

.  <^o3  Degrees 

) 

6] 

T" 

Sir.d 

D. 

Cosine  1  D. 

Tang   i 

D.  1 

Cotang.  \        1 

U 

9.7361091 
736303 

324 

9.923591 

137 

9.812517 

461 

10.187482  60'1 

1 

324 

923509 

137 

812794 

461 

187206 

59 

581 

2 

736498 

324 

923427 

137 

31.3070 

461 

186930 

3 

736692 

323 

923.345 

137 

813347 

460 

186653 

57 

4 

736880 

323 

923263 

137 

813623 

460 

186.377 

56 

ft 

737080 

323 

923181 

137 

813899 

460 

186101 

55 

6 

737274 

.323 

923098 

137 

814175 

460 

185825 

54 

7 

737467 

323 

923016 

137 

814452 

460 

185548 

53 

8 

737661 

322 

922933 

137 

814728 

460 

185272 

52 

9 

737855 

322 

922851 

137 

815004 

460 

184996 

51 

10: 
11 

738048 

322 

922768} 
9.922686 

138 
138 

815279 
9.815555 

460 
459 

184721 

50 

:>   738241 

322 

10.184445 

49 

12 

738434 

322 

922603 

138 

815831 

459 

134169 

48 

i3: 

738627 

321 

922520 

138 

816107 

459 

183893 

47 

14  j 

738820 

321 

922438 

138 

816382 

459 

183618 

46 

15 

739013 

321 

922355 

138 

816658 

459 

183342 

45 

16| 

739206 

321 

922272 

138 

816933 

459 

183067 

44 

17  t 

739398 

321 

922189 

138 

817209 

459 

182791 

43 

18 

739590 

320 

922106 

138 

817484 

459 

182516 

42 

19 

739783 

320 

922023 

138 

817759 

459 

182241 

41 

20 
21 

739975 

320 

921940 

138 
139 

818035 

458 

181965 

40 
39 

9.740167 

320 

9.9218.57 

9.818310 

458 

iO. 181690 

22 

740359 

320 

921774 

139 

818585 

458 

181415 

38 

2:3 

740550 

319 

921691 

139 

818860 

458 

181140 

37 

24 

740742 

319 

921607 

1.39 

819135 

458 

180865 

36 

25 

740934 

319 

921524 

139 

819410 

458 

180590 

35 

2fi 

741125 

319 

921441 

139 

819684 

458 

180316 

34 

27 

741316 

319 

921357 

139 

819959 

458 

180041 

33 

2S 

741508 

318 

921274 

139 

820234 

458 

179766 

32 

29 

741699 

318 

921190 

139 

820508 

457 

179492 

31 

30 

741889 

318 

921107 

1,39 
139 

820783 

457 

179217 

30 
29 

9 . 742080 

318 

9.921023 

9.821057 

457 

10.178943 

;32 

742271 

318 

920939 

140 

821332 

457 

178668 

28 

;{:} 

742462 

317 

920856 

140 

821606 

457 

178394 

27 

31 

742652 

317 

920772 

140 

821880 

457 

178120 

26 

35 

742842 

317 

920688 

140 

822154 

457 

177846 

25 

36 

743033 

317 

920604 

140 

822429 

457 

177571 

24 

37 

743223 

317 

920520 

140 

82270.^ 

457 

177297 

23 

38 

743413 

316 

920436 

140 

822977 

456 

177023 

22 

39 

743802 

316 

920352 

140 

823250 

456 

176750 

21 

40 
4l' 

743792 

316 

920268 
9.920184 

140 
140 

823524 

9.823798 

456 
456 

176476 

20 
19 

9.743982 

316 

10.176202 

42 

744171 

316 

920099 

140 

824072 

456 

175928 

18 

43 

7443G1 

315 

920015 

140 

824345 

456 

1756.55 

17 

44 

744550 

315 

919931 

141 

824619 

456 

175381 

16 

45 

744739 

315 

919846 

141 

824893 

456 

175107 

15 

4(5 

744928 

315 

919762 

141 

825166 

456 

174834 

14 

17 

745117 

315 

919677 

141 

825439 

455 

174561 

13 

18 

745306 

314 

919.593 

141 

825713 

455 

174287 

12 

49 

745494 

314 

919508 

141 

82.5986 

455 

174014 

11 

50 

745683 

314 

919424 

141 

826259 

455 

173741 

10 

51 

9.745871 

314 

9.9L9339 

141 

9.826532 

455 

10.173468 

9 

52 

746059 

314 

919254 

141 

826805 

455 

173195 

8 

53 

746248 

313 

919169 

141 

827078 

455 

172922 

7 

54 

746436 

313 

919085 

141 

827351 

455 

172649 

6 

55 

746624 

313 

919000 

141 

827624 

455 

172376 

5 

56 

746812 

313 

918915 

142 

827897 

454 

172103 

4 

57 

746999 

313 

918830 

142 

828170 

454 

171830 

3 

58 

747187 

312 

918745 

142 

828442 

454 

171558 

2 

59 

747374 

312 

918659 

142 

828715 

454 

17128.'i 

1 

60 

747562 

1  312 

918574 

142 

828987 

454 

171013 

0 

I      Cos 


I  I     Colaiig.      I 

56  D'>jv(.'es. 


|M 


52 

(34  Degrees.)  a 

TABLE  OF  LOGARITHMIC 

M. 

1   Sine 

1   D. 

Cosine  1  D. 

Tang. 

n 

Coian?.  j   1 

0 

9.747562 

312 

9.918574 

142 

9.828987 

45i 

10.171013 

60 

1 

747749 

312 

918489 

142 

829260 

454 

170740 

59 

2 

747936 

312 

9184U4 

142 

829532 

454 

170468 

58 

3 

748123 

311 

918318 

142 

829805 

454 

170195 

57 

4 

748310 

311 

918233 

142 

830077 

454 

169923 

56 

5 

748497 

311 

918147 

142 

830349 

453 

169651 

55 

6 

748683 

311 

918062 

142 

830621 

453 

169379 

54 

7 

748870 

311 

917976 

143 

830893 

453 

169107 

53 

8 

749056 

310 

917891 

143 

831165 

453 

168835 

52 

9 

749243 

310 

917805 

143 

831437 

453 

168563 

51 

10 

749429 

310 

917719 

143 

831709 

453 

168291 

50 

11 

9.749615 

310 

9.917634 

143 

9.831981 

453 

10.168019 

49 

12 

749801 

310 

917548 

143 

832253 

453 

167747 

48 

13 

749987 

309 

917462 

143 

832525 

453 

167475 

47 

14 

750172 

309 

917376 

143 

832796 

453 

167204 

46 

15 

750358 

309 

917290 

143 

833068 

452 

166932 

45 

16 

750543 

309 

917204 

143 

833339 

452 

166661 

44 

17 

750729 

309 

917118 

144 

833611 

452 

166389 

43 

18 

750914 

308 

917032 

144 

833882 

452 

166118 

42 

19 

751099 

308 

916946 

144 

834154 

452 

165846 

41 

20 
21 

751284 

308 

916859 

144 
144 

834425 

452 

16.5575 

40 
39 

9.751469 

308 

9.916773 

9.834696 

452 

10.165304 

22 

751654 

308 

916687 

144 

834967 

452 

165033 

38 

23 

751839 

308 

916600 

144 

835238 

452 

164762 

37 

24 

752023 

307 

916514 

144 

835509 

452 

164491 

36 

25 

752208 

307 

916427 

144 

835780 

451 

164220 

35 

26 

752392 

307 

916341 

144 

836051 

451 

163949 

34 

27 

752576 

307 

916254 

144 

836322 

451 

163678 

33 

28 

752760 

307 

916167 

145 

836593 

451 

163407 

32 

29 

752944 

306 

916081 

145 

836864 

451 

163130 

31 

30 
31 

753128 

306 

915994 

145 
145 

837134 

451 

162806 

30 

29 

9  753312 

306 

9.915907 

9.837405 

451 

10.162595 

32 

753495 

306 

915820 

145 

837675 

451 

162325 

28 

33 

753679 

306 

915733 

145 

837946 

451 

162054 

27 

34 

753862 

305 

915646 

145 

838216 

451 

161784 

26 

35 

754046 

305 

915559 

145 

838487 

450 

161513 

25 

36 

754229 

305 

915472 

145 

838757 

450 

161243 

24 

37 

754412 

305 

915385 

145 

839027 

450 

160973 

23 

38 

754595 

305 

915297 

145 

839297 

450 

160703 

22 

39 

754778 

304 

915210 

145 

839568 

450 

160432 

21 

40 
41 

754960 
9.755143 

304 

915123 
9.915035 

146 
146 

839838 

450 

160162 

20 
19 

304 

9.840108 

450 

10.159892 

42 

755326 

304 

914948 

146 

840378 

450 

159622 

18 

43 

755508 

304 

914860 

146 

840647 

450 

159353 

17 

44 

755690 

304 

914773 

146 

840917 

449 

159083 

16 

45 

755872 

303 

914685 

146 

841187 

449 

15S813 

15 

46 

756054 

303 

914598 

146 

841457 

449 

158543 

14 

47 

756236 

303 

914510 

146 

841726 

449 

158274 

13 

48 

756418 

303 

914422 

146 

841996 

449 

158004 

12 

49 

756600 

303 

914334 

146 

842266 

449 

157734 

11 

50 
51 

756782 

302 

914246 
9.914158 

147 
147 

842535 
9.842805 

449 
449 

157465 

10 
9 

9.756963 

302 

10.157195 

52 

757144 

302 

914070 

147 

843074 

449 

156926 

8 

53 

757326 

302 

913982 

147 

843343 

449 

156657 

7 

54 

757507 

302 

913894 

147 

843612 

449 

156388 

6 

55 

757688 

301 

913806 

147 

843882 

448 

156118 

5 

56 

757869 

301 

913718 

147 

844151 

448 

155849 

4 

57 

758050 

301 

913630 

147 

8444^0 

448 

155580 

3 

58 

758230 

301 

913541 

147 

844689 

448 

15.5311 

2 

59 

758411 

301 

913453 

147 

844958 

448 

155042 

1 

60 

75S591 

301 

913365 

147 

845227 

448 

154773 

0 

1   Ci)*ine 

Sine   j 

Colang. 

Tsns.   i  M  1 

55  Degrees. 


SINES  AND  TANGENTS.     (35  Degrees.) 


53 


M. 

Sine 

1).   1   Cosine   1  D. 

Tansz. 

D. 

ColmiL'. 

~T 

9.758591 

.301 

9.913365 

147 

9.845227 

448 

10. J  54773 

60 

1 

758772 

300 

913276 

147 

845496 

448 

154504 

5.9 

2 

758952 

300 

913187 

148 

845764 

448 

154236 

58 

3 

759132 

300 

913099 

148 

846033 

448 

153967 

57 

4 

759312 

300 

Q 1 30 10 

148 

846302 

448 

153698 

56 

5 

759492 

300 

912922 

148 

846570 

447 

153430 

56 

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796521 

262 

892030 

169 

904491 

431 

095509 

15 

46 

796679 

262 

891929 

169 

904750 

43] 

095250 

14 

47 

796836 

262 

891827 

169 

90.5008 

431 

094992 

13 

48 

796993 

262 

891726 

169 

905267 

431 

094733 

12 

49 

797150 

261 

891624 

169 

905.526 

431 

094474 

11 

50 
51 

797307 

261 

891523 
9.891421 

rro 

170 

905784 
9.906043 

431 

431 

094216 

10 
9 

9.797464 

261 

i 0.093957 

52 

797621 

261 

891319 

170 

906302 

431 

093698 

8 

53 

797777 

261 

891217 

170 

906560 

431 

093440 

7 

54 

797934 

261 

891115 

170 

906819 

431 

093181 

6 

55 

798091 

261 

891013 

170 

907077 

431 

092923 

5 

56 

798247 

261 

890911 

170 

907336 

431 

092664 

4 

57 

798403 

260 

890809 

170 

907594 

431 

092406 

3 

58 

798560 

260 

890707 

170 

907852 

431 

092148 

2 

59 

793716 

260 

890605 

170 

908111 

430 

091889 

I 

60 

79SS72 

260 

890503 

170 

908369 

430 

091631 

0 

Cosine 

Sine   1 

Cotaiig. 

i    Tai.g.   1  M.  1 

51  DegiGo< 


SINES  AND  TANGENTS.      (39  Degrees.) 


M. 

1    i^nu.. 

1   r.. 

Cosir.e   1  I). 

'i'^m.    1 

D. 

Cotaii}?.   j 

0 

9.798S72 

260 

9.890503 

170 

9.908369' 

430 

10.0916311  60 

1 

799028 

260 

890400 

171 

9086281 

430 

0913721  59 

2 

799184 

260 

890298 

171 

908886 

430 

091114  58 

3 

799339 

259 

890195 

171 

909144! 

430 

090856 

57 

4 

799495 

259 

890098 

171 

909402! 

430 

090598 

56 

5 

799651 

259 

889990 

171 

909660 

430 

090340 

55 

6 

799806 

259 

889888 

171 

909918 

430 

090082 

54 

•  7 

799962 

259 

889785 

171 

9101771 

430 

089823 

53 

8 

800117 

259 

889682 

171 

910435' 

430 

089565 

52 

9 

800272 

258 

889579 

171 

910693 

430 

089307 

51 

10 

11 

800427 

258 

889477 
9.889374 

171 
172 

9109511 
9.911209; 

430 
430 

089049 

50 
49 

9.800582 

258 

10.088791 

12 

800737 

258 

8892/1 

172 

9114671 

430 

088533 

48 

13 

800892 

258 

8S9168 

172 

911724 

430 

088276 

47 

14 

801047 

258 

889064 

172 

911982; 

430 

088018 

46 

15 

801201 

258 

888961 

172 

9122401 

430 

087760 

45 

16 

801356 

257  ' 

888858 

172 

9124981 

430 

087502 

44 

17 

801511 

257 

888755 

172 

9127561 

430 

087244 

43 

18 

801665 

257  , 

888651 

172 

913014: 

429 

080986 

42 

19 

801819 

257 

888548 

172 

91.3271 

429 

086729 

41 

20 
21 

801973 
9,802128 

257  1 
257  ' 

888444 
9.888341 

173 
173 

913.529, 

429 

086471 
10.086213 

40 
39 

9.913787| 

429 

22 

802282 

256 

888237 

173 

914044: 

429 

08.5956 

38 

23 

802436 

256 

888134 

173 

914302. 

429 

085698 

37 

24 

802.589 

256 

888030 

173 

914560: 

429 

085440 

36 

25 

802743 

2.56 

887926 

173 

914817; 

429 

085183 

35 

26 

802897 

256 

887822 

173 

91.5075^ 

429 

084925 

34 

27 

80.3050 

2.56 

887718 

173 

91.5332' 

429 

084668 

33 

28 

80.3204 

256 

887614 

173 

91,5590! 

429 

084410 

32 

29 

803357 

255 

887510 

173 

915847; 

429 

084153 

31 

30 

31 

80.3511 

255 

887406 
9.887302 

174 

174 

916104! 

429 

083896 

30 
29 

9.803664 

255 

9.916362; 

429 

10.0836.38 

32 

803817 

255 

887198 

174 

916619; 

429 

083381 

28 

33 

803970 

255 

887093 

174 

916877; 

429 

083123 

27 

34 

804123 

255 

886989 

174 

917134 

429 

082866 

26 

35 

804276 

254 

886885 

174 

917391 

429 

082609 

25 

36 

804428 

254 

886780 

174 

917648 

429 

082352 

24 

H7 

804581 

254 

886676 

174 

917905! 

429 

082095 

23 

38 

804734 

254 

886.57  1 

174 

918163 

428 

081837 

22 

39 

804886 

254 

886466 

174 

918420 

428 

081580 

21 

40 

41 

805039 

254 

886362 
9.886257 

175 
175 

918677 

428 

081323 
10.081066 

20 
19 

9.805191 

2.54 

9.918934 

428 

42 

805343 

253 

886152 

175 

919191 

428 

080809 

18 

43 

805495 

2,53 

886047 

175 

919448 

428 

080552 

17 

44 

805647 

253 

885942 

175 

919705 

428 

080295 

16 

45 

805799 

253 

88.5837 

175 

919962 

428 

080038 

15 

46 

805951 

253 

885732 

175 

920219 

428 

079781 

14 

47 

806103 

2.53 

885627 

175 

920476 

428 

079524 

13 

48 

806254 

253 

885522 

175 

9207,33 

428 

079267 

12 

49 

806406 

252 

885410 

175 

920990 

428 

079010 

11 

50 
51 

806557 

252 

88.5311 

176 
176 

921247 
9.921503 

428 
428 

078753 

10 
9 

9.806709 

252 

9.88.5205 

;  10.078497 

52 

806860 

252 

885100 

176 

921760 

428 

078240 

8 

53 

807011 

252 

884994 

176 

922017 

428 

077983 

7 

54 

807163 

252 

884889 

176 

922274 

428 

;    077726 

6 

55 

807314 

I  252 

884783 

176 

922530 

428 

!    077470 

5 

56 

807465 

251 

884677 

176 

922787 

428 

;    077213 

4 

57 

807615 

251 

884572 

176 

923044 

428 

07695r 

3 

58 

807766 

251 

884466 

176 

923300 

428 

076700 

2 

59 

807917 

!  251 

884360 

176 

923.557 

427 

076443 

1 

60 

808067 

'  251 

884254 

177 

923S13 

427 

1    076187 

0 

Codne 

1 

1   S.ne   1 

1   Cotaiifr. 

1 

1   T.,,.    |M.| 

23* 


50  Deafces. 


58 


(40  Dei^ecs.)     a  taulk  jf  logaiiithmtc 


M. 

1    Su.e   1 

I). 

i  Cosine   1  I) 

Tiihc. 

._JL_ 

Coianp.   1    \ 

0 

9. S 080 67 

251 

9.884254 

177 

t>.  9238 13 

427 

t0.076i87 

"60 

1 

8032 1 8 

251 

884148 

177 

924070 

427 

07593U 

59 

2 

808368 

251 

884042 

177 

924327 

427 

075673 

58 

3 

8085 19j 

250 

883936 

177 

924583 

427 

075417 

57 

4 

8086691 

250 

883829 

177 

924840 

427 

075160 

56 

5 

8088 19! 

250 

883723 

177 

925096 

427 

074904 

55 

6 

8081>69j 

250 

883617 

177 

925352 

427 

074648 

54 

7 

809119 

250 

883510 

177 

925609 

427 

074391 

53 

8 

809269: 

250 

883104 

177 

925865 

427 

074135 

52 

9 

8094 1 91 

249 

883297 

178 

926122 

427 

073878 

51 

10 

8095691 

249 

883191 

178 

926378 

427 

073622 

50 

11 

9.809718] 

249 

D.  883084 

178 

9.926634 

427 

10.073366 

49 

12 

809S68 

249 

SS2977 

178 

92e«>i>9i"> 

427 

073110 

48 

13 

810017; 

249 

882871 

178 

927147 

427 

072853 

47 

14 

8101671 

249 

882764 

178 

927403 

427 

072597 

46 

15 

8103I6I 

248 

882657 

178 

927659 

427 

072341 

45 

16 

8101651 

248 

882550 

178 

927915 

427 

072085 

44 

17 

8106141 

248 

882443 

178 

92S171 

427 

071829 

43 

18 

810763| 

248 

882336 

179 

928427 

427 

071573 

42 

19 

8109121 

248 

882229 

179 

928683 

427 

071317 

41 

20 

8H06l| 

248 

882121 

179 

928940 

427 

071060!  401 

21 

9.811210; 

248 

9.882014 

179 

9.929196 

427 

10.070804!  391 

22 

811358! 

247 

881907 

179 

929452 

427 

070548 

38 

23 

811507! 

247 

881799 

179 

929708 

427 

070292 

37 

24 

8116551 

247 

881692 

179 

929964 

426 

070036 

36 

25 

8118041 

247 

881584 

179 

930220 

426 

069780 

35 

26 

811952! 

247 

881477 

179 

930475 

426 

069525 

34 

27 

812100 

247 

8813G9 

179 

930731 

426 

069269 

33 

28 

81 2248 i 

247 

881261 

180 

930987 

426 

069013 

32 

29 

812396' 

246 

881153 

180 

931243 

426 

068757 

31 

30 

812544 

246 

881046 

180 

931499 

426 

068501 

30 

3i 

9.812692 

246 

9.880938 

180 

9.931755 

426 

UK  068245 

29 

32 

812840; 

246 

880830 

180 

932010 

426 

067990 

28 

33 

812988 

246 

880722 

180 

932265 

426 

067734 

27 

34 

813135 

246 

880613 

180 

932522 

426 

067478 

26 

35 

813283 

246 

880505 

ISO 

932778 

426 

067222 

25 

36 

813430 

245 

880397 

180 

933033 

426 

066967 

24 

37 

813578 

245 

880289 

181 

933289 

426 

066711 

23 

38 

813725 

245 

880180 

181 

933545 

426 

066455 

22 

39 

813872 

245 

880072 

181 

933800 

420 

066200 

21 

40 

814019. 

245 

879963 

181 

93405S 

426 

065944 

20 

41 

9.814166 

245 

9.879855 

181 

9.934311 

426 

10.065689 

19 

42 

814313 

245 

879746 

i81 

934567 

426 

065433 

18 

43 

814460 

244 

879637 

181 

934S23 

426 

065 1 77 

17 

44 

814607 

244 

879529 

181 

935078 

426 

064922 

16 

45 

814753 

244 

879420 

181 

935333 

426 

064667 

15 

46 

814900 

244 

879311 

181 

935589 

426 

064411 

14 

47 

815046 

244 

879202 

182 

935844 

426 

064156 

13 

48 

815193 

244 

879093 

182 

938100 

426 

063900 

12 

49 

815339 

244 

878984 

182 

936355 

426 

003645 

11 

50 

51 

815485 

243 

878875 
9.878766 

182 
182 

936610 

426 

063390 
10.063134 

10 
i) 

9.815631 

243 

9.9.36866 

425 

52 

815778 

243 

878656 

182 

937121 

425 

062S79 

8 

53 

815924 

243 

878547 

182 

937376 

425 

062624 

7 

54 

816069 

243 

878438 

182 

937632 

425 

062368 

6 

55 

816215 

243 

878328  182 

937887 

425 

062113 

r 

56 

816361 

243 

878219  183 

938142 

425 

001858 

4 

57 

816507 

242 

878109  183 

938398 

425 

061602 

3 

58 

816652; 

242 

877999  183 

938653 

425 

001347 

2 

59 

816798 

242 

877890  183 

93-^9()S 

42.5 

061092 

1 

60 

8l6943i 

242 

877780  183 

939  i  63 

425 

060S37 

Al 

1 

(J„Mno   j 

Si:..   1 

<■..;;.,„.. 

'.•:.,.«.   |M.[ 

49   Uesjti^s 


SI^IES  AND  TANGENTS 

.   i41  D 

cgiees 

•) 

59 

nr 

1   Si,.. 

1   D. 

Cosine   j  D. 

Tnnu. 

D. 

Cotaii".  1   j 

0 

9.816943 

242 

9.877780 

183 

9.939163 

425 

10.060837 

60 

1 

817088 

242 

877670 

183 

939418 

425 

060582 

59 

2 

817233 

242 

877560 

183 

939673 

425 

060327 

58 

3 

817379 

242 

877450 

183 

939928 

425 

060072 

57 

4 

817524 

24] 

877340 

183 

940183 

425 

059817 

56 

5 

817668 

241 

877230 

184 

940438 

425 

059562 

55 

6 

817813 

241 

877120 

184 

940G94 

425 

059306 

54 

7 

817958 

241 

877010 

184 

340949 

425 

059051 

63 

8 

818103 

241 

876899 

184 

941204 

425 

058796 

52 

9 

818247 

241 

876789 

184 

941458 

425 

058542 

51 

10 
11 

818392 

241 

876678 

184 
184 

941714 

425 

058286 

50 
49 

9.818536 

240 

9.876568 

9.941968 

425 

10.058032 

12 

81868] 

240 

876457 

184 

942223 

425 

057777 

48 

13 

818825 

240 

876347 

184 

942478 

425 

057522 

47 

14 

818969 

240 

876236 

185 

942733 

425 

057267 

46 

15 

819113 

240 

876125 

185 

942988 

425 

057012 

45 

16 

819257 

240 

876014 

185 

943243 

425 

0567.57 

44 

17 

819401 

240 

875904 

185 

943498 

425 

056502 

43 

18 

819545 

239 

875793 

185 

943752 

425 

056248 

42 

19 

819089 

239 

875682 

1S5 

944007 

425 

055993 

41 

20 

21 

819832 

239 

875571 
9.875459 

185 

185 

944262 

425 

055738 
10.05.5483 

40 
39 

0.819976 

239 

9.944517 

425 

22 

820120 

239 

875348 

185 

944771 

424 

055229 

38 

23 

820263 

239 

875237 

185 

945026 

424 

0.54974 

37 

24 

820406 

239 

875126 

186 

94.5281 

424 

054719 

36 

25 

820550 

238 

875014 

186 

945535 

424 

054465 

35 

26 

8206S3 

238 

874903 

186 

945790 

424 

0,54210 

34 

27 

820836 

238 

874791 

186 

946045 

424 

053955 

33 

28 

820979 

238 

874680 

186 

946299 

424 

053701 

32 

29 

821122 

238 

874568 

186 

9465.54 

424 

053446 

31 

30 
31 

821265 

238 

874456 
9.874344 

180 

186 

946808 

424 

0.53192 
10.052937 

30 
29 

9.821407 

238 

9.947063 

424 

32 

821550 

238 

874232 

187 

947318 

424 

052682 

28 

33 

821693 

237 

874121 

187 

947572 

424 

052428 

27 

34 

821835 

237 

874009 

187 

947826 

424 

0.52)74 

20 

35 

821977 

237 

873896 

187 

948081 

424 

051919 

25 

36 

822120 

237 

873784 

187 

948336 

424 

051664 

24 

37 

822262 

237 

873ti72 

187 

948590 

424 

051410 

23 

38 

822404 

237 

873560 

187 

948844 

424 

051156 

22 

39 

822546 

237 

873148 

187 

949099 

424 

050901 

21 

40 
41 

822688 
9.822830 

236 
236 

873335 
9.873kJ23 

187 
]87 

949353 

424 

050647 

20 
19 

9.949607 

424 

10.050.393 

42 

822972 

236 

873110 

188 

949862 

424 

0.50 13S 

18 

43 

823114 

236 

872998 

188 

950116 

424 

049884 

17 

44 

823255 

236 

872885 

188 

950370 

424 

049630 

16 

45 

823397 

236 

872772 

188 

950625 

424 

049375 

15 

46 

823539 

236 

872659 

188 

950879 

424 

049121 

14 

47 

823680 

235 

872.547 

188 

951133 

424 

048867 

13 

48 

823821 

235 

872434 

188 

951388 

424 

048012 

12 

49 

823963 

235 

872321 

188 

951642 

424 

048358 

11 

50' 

824104 

235 

872208 

188 

951896 

424 

048104 

10 

51 

9.824245 

235 

9.872095 

189 

9.952150 

424 

10.047850 

9 

52 

824386 

235 

871981 

189 

952405 

424 

047595 

8 

53 

824527 

235 

871868 

189 

952659 

424 

047341 

7 

54 

824668 

234 

8717.55 

189 

952913 

424 

047087 

6 

55 

824808 

234 

871641 

189 

953167 

423 

046833 

5 

56 

824949 

234 

871528 

189 

953421 

423 

046579 

4 

57 

825090 

.  234 

871414 

189 

953675 

423 

046325 

3 

58 

825230 

{  234 

871301 

189 

9.53929 

423 

046071 

3 

59 

825371 

234 

871187 

189 

954183 

423 

045817 

] 

GO 

82551] 

1  234 

871073 

190 

954437 

423 

0455631  0 

1  Cosine 

Sine    1 

(;(i:uiir 

Tanii.   1  M. 

60 

(42  Degrees.)  a 

TABLE  OF  LOUAEITHMIC 

M. 

Sine 

I). 

Cnsinc;   1  D. 

Tar.L'. 

D. 

Coiiinc.   1   1 

0 

9.825511 

234 

9.871073 

190 

9.954437 

423 

10.045563 

60 

1 

825651 

233 

870960 

190 

9.54691 

423 

045309 

59 

2 

825791 

233 

870846 

190 

954945 

423 

045055 

58 

3 

825931 

233 

870732 

190 

95.5200 

423 

044800 

57 

4 

826071 

233 

870618 

l&O 

955454 

423 

044546 

56 

5 

826211 

233 

870504 

190 

955707 

423 

044293 

55 

6 

826351 

233 

870390 

190 

955961 

423 

044039 

54 

7 

826491 

233 

870276 

190 

956215 

423 

043785 

53 

8 

826631 

233 

870161 

190 

956469 

423 

043531 

52 

9 

826770 

232 

870047 

191 

956723 

423 

043277 

51 

10 
11 

826910 

232 

869933 
9.809818 

191 

Toi 

956977 

423 

043023 
10.042769 

50 
49 

9.827049 

232 

9.957231 

423 

12 

827189 

232 

869704 

191 

957485 

423 

042515 

48 

13 

827328 

232 

869589 

191 

957739 

423 

042261 

47 

14 

827467 

232 

869474 

191 

957993 

423 

042007 

46 

15 

827606 

232 

869360 

191 

958246 

423 

041754 

45 

16 

827745 

232 

869245 

191 

958500 

423 

041500 

44 

17 

827884 

231 

869130 

191 

9587.54 

423 

041246 

43 

18 

828023 

231 

869015 

192 

959008 

423 

040992 

42 

19 

828162 

231 

868900 

192 

959262 

423 

040738 

41 

20 

828301 

231 

868785 

192 

959516 

423 

040484 

40 

21 

9.828439 

231 

9.868670 

192 

9.959769 

423 

10.040231 

39 

22 

828578 

231 

8685.55 

192 

960023 

423 

039977 

38 

23 

828716 

231 

868440 

192 

960277 

423 

039723 

37 

24 

828855 

230 

868324 

192 

960531 

423 

039469 

36 

25 

828993 

230 

868209 

192 

960784 

423 

039216 

35 

26 

829131 

230 

868093 

192 

961038 

423 

038962 

34 

27 

829269 

230 

867978 

193 

961291 

423 

038709 

33 

28 

829407 

230 

867862 

193 

961.545 

423 

038455 

32 

29 

829545 

2.30 

867747 

193 

961799 

423 

038201 

31 

30 
31 

829683 

230 

867631 
9.867515 

193 
193 

962052 

423 

037948 
10.037694 

30 

29 

9.829821 

229 

9.962306 

423 

32 

829959 

229 

867399 

193 

962560 

423 

037440 

28 

33 

830097 

229 

867283 

193 

962813 

423 

037187 

27 

34 

830234 

229 

867167 

193 

963067 

423 

036933 

26 

35 

830372 

229 

867051 

193 

963320 

423 

036680 

25 

36 

830509 

229 

866935 

194 

963574 

423 

036426 

24 

37 

830646 

229 

866819 

194 

963827 

423 

036173 

23 

38 

830784 

229 

866703 

194 

964081 

423 

035919 

22 

39 

830921 

228 

866586 

194 

964335 

423 

035665 

21 

40 
4 ! 

831058 

228 

866470 
9.866353 

194 
194 

964588 

422 

035412 
10.035158 

20 
19 

9.831195 

228 

9.964842 

422 

42 

831332 

228 

866237 

194 

965095 

422 

0.34905 

18 

43 

831469 

228 

866120 

194 

965.349 

422 

0.34651 

17 

44 

831606 

228 

866004 

195 

965602 

422 

034398 

16 

45 

831742 

228 

865887 

195 

965855 

422 

034145 

15 

46 

831879 

228 

865770 

195 

966109 

422 

0.33S91 

14 

47 

832015 

20-7 

865653 

195 

966362 

422 

033638 

13 

48 

832152 

227 

865536 

195 

966616 

422 

033384 

12 

49 

832288 

227 

865419 

195 

966869 

422 

033131 

11 

50 

51 

832425 

227 

865302 
9.865185 

195 

195 

967123 

422 

032877 

10 
9 

0.832561 

227 

9.967376 

422 

10.032624 

62 

832697 

227 

865068 

195 

967629 

422 

032371 

8 

53 

832833 

227 

864950 

195 

067883 

422 

032117 

7 

54 

832909 

226 

864833 

196 

968136 

422 

031864 

6 

56 

833105 

226 

864716 

196 

968389 

422 

031611 

5 

50 

833241 

226 

864598 

196 

968643 

422 

031357 

4 

57 

833377 

226 

864481 

196 

968896 

422 

031104 

3 

58 

833512 

226 

864363 

196 

969149 

422 

030851 

2 

59 

833648 

226 

864245 

196 

969403 

422 

030597 

1 

60 

833783 

'  226 

864127 

196 

969656 

422 

030344 

0 

1   C...-iiie 

1   8.,,..   1 

Cnu.n.. 

1    'J'.-tni;.   1  -M.  1 

47  Degrees. 


S1.\KS  AND  TANGENTS 

(43   Decrrces 

') 

61 

M 

Sine 

D. 

Csilie   1  D. 

Tans. 

I   D. 

Co:..,.. 

~l 

0 

9.833783 

226 

9.864127 

196 

9.969656 

422 

10.030344  60  1 

i 

83391!) 

225 

864010 

196 

969909 

422 

030091 

59 

2 

834054 

225 

863892 

197 

970162 

422 

029838 

58 

3 

834189 

225 

863774 

197 

970416 

422 

029584 

57 

4 

834325 

225 

863656 

197 

970669 

422 

029331 

50 

5 

834160 

225 

863538 

197 

970922 

422 

029078 

55 

6 

834595 

225 

863419 

197 

971175 

422 

028825 

54 

7 

834730 

225 

863301 

197 

971429 

422 

028571 

53 

8 

834865 

225 

863183 

197 

971682 

422 

028318 

52 

9 

834999 

224 

863064 

197 

971935 

422 

028065 

51 

10 
11 

835134 

224 

862946 

198 
198 

972188 

422 

027812 

50 
49 

9.835269 

224 

9.862827 

9.972441 

422 

10.027559 

12 

835403 

224 

862709 

198 

972694 

422 

027306 

48 

13 

835538 

224 

862590 

198 

972948 

422 

027052 

47 

14 

835672 

224 

862471 

198 

973201 

422 

026799 

46 

15 

835807 

224 

862353 

198 

973454 

422 

026546 

45 

16 

83594  I 

224 

862234 

198 

973707 

422 

026293 

44 

17 

836075 

223 

862115 

198 

973960 

422 

026040 

43 

18 

836209 

223 

861996 

198 

974213 

422 

025787 

42 

19 

836343 

223 

861877 

198 

974466 

422 

025534 

41 

20 
21 

836477 
9.836611 

223 

223 

861758 

199 
199 

974719 

422 

025281 

40 
39 

9.861638 

9.974973 

422 

10.025027 

22 

836745 

223 

861519 

199 

975226 

422 

024774 

38 

23 

836878 

223 

861400 

199 

975479 

422 

024.521 

37 

24 

837012 

222 

861280  199 

975732 

422 

024268 

36 

25 

837146 

222 

861161 

199 

975985 

422 

024015 

35 

26 

837279 

222 

861041 

199 

976238 

422 

023762 

34 

27 

837412 

222 

860922 

199 

976491 

422 

023509 

33 

28 

837546 

222 

800802 

199 

976744 

422 

023256 

32 

29 

837679, 

222 

860682 

200 

976997 

422 

023003 

31 

30 
31 

837812 
9.837945 

222 
222 

860.562 
9.860442 

200 
200 

977250 

422 

022750 

30 
29 

9.977503 

422 

10.022497 

32 

638078 

221 

860322 

200 

977756 

422 

022244 

28 

33 

838211 

221 

860202 

200 

978009 

422 

021991 

27 

34 

83834^1 

221 

860082 

200 

978262 

422 

0217.38 

26 

35 

838477 

221 

859962 

200 

978515 

422 

021485 

25 

36 

838610 

221 

859842 

200 

978768 

422 

021232 

24 

37 

838742 

221 

869721 

201 

979021 

422 

020979 

23 

38 

83S875 

221 

859801 

201 

979274 

422 

020726 

22 

39 

839007 

221 

859480 

201 

979527 

422 

020473 

21 

40 
U 

839140 

220 

859360 
9.859239 

201 
201 

979780 

422 

020220 
10.019967 

20 
19 

9.839272 

220 

9.980033 

422 

42 

839404 

220 

859119 

201 

980286 

422 

019714 

18 

43 

839536 

220 

858998 

201 

9805.38 

422 

019462 

17 

44 

839668 

220 

858877 

201 

980791 

421 

019209 

10 

45 

839800 

220 

858756 

202 

981044 

421 

018956 

15 

46 

839932 

220 

8.58635 

202 

981297 

421 

018703 

14 

47 

840064 

219 

858514 

202 

981550 

421 

018450 

13 

48 

840196 

219 

858393 

202 

981803 

421 

018197 

12 

49 

84032S 

219 

858272 

202 

982056 

421 

017944 

11 

50 

840459 

219 

858151 

202 

982309 

421 

017691 

10 

51 

0.840591 

219 

9.858029 

202 

0.982562 

421 

10.017438 

9 

52 

840722 

219 

857908 

202 

982814 

421 

017186 

8 

53 

84085^ 

219 

857786 

202 

983067 

421 

016933 

7 

54 

840985 

219 

857665 

203 

983320 

421 

016680 

6 

55 

841116 

218 

857543 

203 

983573 

421 

016427 

5 

56 

841247 

218 

857422 

203 

983826 

421 

016174 

4 

57 

841378 

218 

857300 

203 

984079 

421 

015921 

3 

58 

841509 

218 

857178 

203 

9S4331 

421 

015669 

2 

59 

841640 

218 

857056 

203 

984584 

421 

015416 

1 

60 

841771 

218 

856934 

203 

984837 

421 

015163  0 

Co.-ine 

1 

giiie   1 

Coiaiig. 

1 

1    Tang.   1  M. 

46  Detjri'cs. 


62 

(44  Degrees.)  a 

TABLE  OF  LOGARITHxMlC 

M.l 

Sine 

1).   1 

(•..>i,.e   ;  ... ; 

Tail!,'.    !  D. 

CotaI^i,^   |   ^ 

0 

9.841771 

218 

9.856034 

203 

9.934837  421 

10.015163 

6U 

1 

841902 

218 

856812 

203 

985090  421 

014910 

59 

2 

842033 

218 

85G690 

204 

9S5343  421 

014657 

58 

3 

842 1G3 

217 

856568 

204 

985S96 

421 

014404 

57 

4 

842294 

217 

856446 

204 

985848 

421 

0141.52 

56 

5 

842424 

217 

856323 

204 

986101 

421 

013899 

55 

6 

842555 

217 

85820 1 

204 

986354 

421 

013646 

54 

7 

842685 

217 

856078 

204 

986607 

421 

013393 

53 

8 

842815 

217 

855956 

204 

986860 

421 

013140 

52 

9 

842946 

217i 

855833 

204 

987112 

421 

012888 

51 

10 

843076 

217 

855711 

205 

937305 

421 

012635 

50 

ll 

9.843206 

2l6 

9.855588 

205 

9.987618 

421 

10.012382 

49 

12 

843336 

216 

855465 

205 

987871 

421 

012129 

48 

13 

843466 

216 

855342 

205 

988123 

421 

011877 

47 

14 

843595 

216 

855219 

205 

988376 

421 

011624 

46 

15 

843725 

216 

855096 

205 

988629 

421 

011371 

45 

16 

843855 

216 

.  854973 

205 

988882 

421 

011118 

44 

17 

8439S4 

216 

854850 

205 

989134 

421 

010866 

43 

18 

844114 

215 

854727 

200 

989387 

421 

010613 

42 

19 

844243 

215 

854603 

206 

939640 

421 

010360 

41 

20 
21 

844372 

215 

854480 
9.854356 

206 

206 

989893 

421 

010107 

40 
39 

9.344502 

2i5 

9.990145 

421 

10.009855 

22 

844631 

215 

854233 

206 

990398 

421 

009602 

38 

23 

844760 

215 

854109 

20-6 

990651 

421 

009349 

37 

24 

844889 

215 

853986 

206 

990903 

421 

009097 

36 

25 

845018 

215 

853S62 

206 

991156 

421 

008844 

35 

26 

845147 

215 

853738 

206 

991409 

421 

008591 

34 

27 

845276 

214 

853614 

207 

991662 

421 

008338 

33 

28 

845405 

214 

853490 

207 

991914 

421 

008086 

32 

23 

845533 

214 

853366 

207 

992167 

421 

007833 

31 

30 
31 

845662 

214 

853342 

9.853118 

207 

207 

992420 

421 

007580 

30 

29 

9.845790 

214 

9.992672 

421 

10  007323 

32 

845919 

214 

852994 

207 

992925 

421 

007075 

28 

33 

846047 

214 

852869 

207 

993178 

421 

006822 

27 

34 

846175 

214 

852745 

207 

993430 

421 

006570 

26 

35 

846304 

214 

852620 

207 

993883 

421 

006317 

25 

36 

846432 

213 

852496 

208 

993936 

421 

006064 

24 

37 

846560 

213 

852371 

203 

994189 

421 

005811 

23 

38 

846688 

213 

852247 

20S 

994441 

42i 

005559 

22 

39 

840816 

213 

852122 

208 

994694 

421 

005306 

21 

40 
41 

846944 
9.847071 

213 

851997 
9.851872 

208 
208 

994947 1  421 

005053 

20 
19 

213 

0.995199 

421 

10.004801 

42 

847199 

213 

851747 

208 

995452 

421 

004548 

18 

43 

847327 

213 

851622 

208 

995705 

421 

004295 

17 

44 

847454 

212 

851497 

209 

995957 

421 

004043 

16 

45 

847582 

212 

851372 

209 

996210 

421 

003790 

15 

46 

847709 

212 

851246 

209 

996463 

421 

003537 

14 

47 

847836 

212 

851121 

209 

996715 

421 

003285 

13 

48 

847964 

212 

850996 

209 

996968 

421 

003032 

12 

49 

848091 

212 

850870 

209 

997221 

421 

002779 

11 

50 

848218 

212 

850745 

209 

997473 

421 

002527 

10 

51 

9.848345 

212 

9.850619 

209 

9.997726 

421 

10.  »92274 

9 

52 

848472 

211 

850493 

210 

997979 

421 

/0202 1 

8 

53 

84S599 

211 

850368 

210 

998231 

421 

001769 

7 

54 

848726 

211 

850242 

210 

998484 

421 

001516 

6 

55 

848852 

211 

850116 

210 

998737 

421 

001263 

5 

56 

848979 

211 

849990 

210 

998989  421 

001011 

4 

57 

840106 

211 

!   849 S 64 

210 

999242  421 

000758 

3 

58 

843232 

211 

84973a 

210 

!)99495  421 

000505 

3 

59 

849359 

211 

849611 

210 

999748  ;  421 

000253 

1 

60 

849485 

211 

849485 

210 

10.000000  421 

000000 

0 

~ 

Cosine 

1   ^="«   1 

1   Coia,.,'.   1 

1   Ta,.g.    (M.| 

45   DcFrefis. 


A   TABLE   OF  JVATURAL   SlIVJES. 


0  Deir. 


iNat. 
Sine 


OUOOO 
00029 
00058 
00087 
00116 
00145 
00175 
00204 
00233 
00262 
00291 
00320 
00349 
00378 
00407 
15';G0436 


Unit. 
00000 
00000 
00000 
00000 
00000 
00000 
00000 
00000 
00000 
00000 
99999 
99999 
99999 
99999 
99999 


16  00465 
17100495 
18100524 
19!00553]999.)3 
20  00582'99998 
2]i006n!99998 
99993 
99993 
24|00698  99998 
25'00727  99997 
26100756  99997 
27100785  99997 
28100814  99997 
29  00844I9999G 
30lO0S73|99996 


1  Deg._ 

Nai.  iN.  Co- 
sine j  Sine 

01745 1 99985 

01774  90984 

01803199984 

01832J99983 

01862 

01891 

,01920 

01949 

01978 

02007 

02036 

02065 

02094 

02123 

;02152 

[02181 


01600 
01629 
01658 
01687 
01716 


\l    N.  ('o-     Nai 
Sine       Sine 


022  1 1 
02240 
02269 
:02298 
!02327 
02356 
02385 
02414 
,02443 
102472 
J02501 
1 02530 
02560 
02589 
02618 
02647 
02676 
02705 
02734 
02763 

)2792 
02821 

(2350 
02879 
02908 
02938 
02967 
02996 
03025 
03054 


89  Dpst. 


2  Ueg. 


iNut.     N.  Co- 
Snie        Sine 


03490 
03519 
03548 
03577 
03606 
03635 
03864 
03693 
03723 
03752 
03781 
03810 
03839 
03868 
03897 
03926 


03083 
03113 
03141 
031 70 
03199 
03228 
03257 
03286 
03316 
03345 
03374 
03403 
03452 
03461 
N.  Co- 
Sine 


99976| 
99975 
99974 
99974 
99973: 
99972; 
99972' 
999711 
99970; 
99969 
99969; 
99968 
99967, 
999o6 
99GG6; 
99965 
99964 
99963 
99963 
99962 
99961 
99960 
99959 
99959 
99958 
99957 
99956 
99955 
99954 
99953 
99952'04827 
99952104856 
9995  111  04885 
99950 ; 049 14 
99949  : 04943; 
99948  04972' 
99947  050011 
99946  05030 
99945:05059 
99944! 05088 
99943' 05117 
99942:05146 
99941  '05175 
99940  05205 
Nat.  ''{N.  t'.)- 
'  Sine  11  Siiid 


03955 
03984 
04013 
01042 
04071 
04100 
04129 
04159 
04188 
04217 
04246 
04275 
04304 
04333 
04362 
04391 
04420 
'04149 
;  04478 
04507 
104536 
04565 
:  04594 
04623 
04653 
04682 
J04711 
04740 
;04769 
04798 


3  Ueg. 

Nat.    iNTCo^ 
Sine   I    Sine 

05234i  99863 
05263:99861 
05292i  99860 
105321199858 
05350  99857 


4  Deg. 


Nat.  N.  Co- 
Sine   Sine 


05379 
05408 
05437 
05466 
05495 
05524 
05553 
05582 
05611 
05640 
05669 


99855 
99854 
99852 
9985 1 
99849 
99847 
99846 
99844 
99842 
99841 
99839 


06976 
07005 
07034 
[07063 
107092 
07121 
'07150 
07179 
07203 
07237 
07266 
07295 
07324 
07353 
07382 
07411 


059S9  99821 


06018 
00047 
00076 
06105 


06134 
06163 
06192 
06221 
06250 
06279 
06308 
06337 
06366 
06395 
06424 
06453 
06482 
06511 
06540 


99319 
99817 
99815 
99813 


07440 
07469 
0749S 
07527 
07556 
07585 
07614 
0764;" 
07672 
07701 
07730 
07759 
0778^ 
07817 
07846 


99812 
99810 
99808 
99806 
99804 
99803 
99801 
99799 
99797 
99795 
99793 
99792 
99790 
99788 
99786 


99756 
99754 
99752 
99750 
99748 
99746 
99744 
99Y42 
99740 
99738 
99730 
99734 
99731 
99729 
99727 
99725 

99723 

99721 

99719 

99716 

99714 

99712 

99710 

99708 

99705 

99703 

99701 

99699. :"!3 

99696 

99694 

99692 


Nat. 
Sine 


06569 
06598 
06627 
06656 
06685 
06714 
06743 
,06773 
06802 
0033 1 
06860 
06889 
06918 
06947 
N.  Co-  Nat. 
Sine   Sine 


88  Deir. 


87  [)er 


99784 
99782 
99780 
99778 
99776 
99774 
99772 
99770 
99768 
99766 
99764 
99762 
99760 
99758 


86  D. 


08310 

08339 
083681 
08397: 
03426 
08455 
08484 
08513 
08542 
08571 
08600 
086291 
08658 
98687 


99654 
99652 
99649 
99647 
99644 
99642 
99639 
99837 
99635, 
99632' 
99630 
99627 
99625 
99622 


Sine 


Nat. 
Sine 


85  Peg. 


64 


A    TABLE    OF    NATURAL    SINES. 


6  i-)eg. 

N.  s7]n.  cs. 


09()14 
0964-2 
)967] 
09700 
09720 
09758 
09787 
09816 
09S45 
09874 
09903 
0993'^^ 
09981 
09990 
10019 


99578 
99575 
99572 
99570 
99567 
99564 
99562 
99559 
99556 
99553 
99551 
99548 
99545 
99542 
99540 


S.  N.CS.   N.S.  N.CS.  ■  N.S, 


10453 
10482 
10511 
10540 
10569 
10597 
10626 
10655 
10684 
10713 
10742 
10771 
10800 
10829 
10858 
10887 


10916 
10945 
10973 
11002 
11031 
11060 
11089 
11118 
11147 
11176 
11205 
11234 
11263 
11291 
11320 


99452 
99449 
99446 
99443 
99440 
99437 
99434 
9943 1 
9942.^ 
99424 
99421 
99418 
99415 
99412 
99409 
99406 
99402 
99399 
99396 
99393 
99390 
99386 
99383 
99380 
99377 
99374 
99370 
99367 
99364 
99360 
99357 


7  Ueg. 


99494 
99491 
99488 
99485 
99482 
99479 
99476 
99473 
99470 
99467 
99464 
99461 
99458 
99455 
NTCS.  I  N.  S. 


84  Desr. 


11783 
11812 
11840 
11869 
11898 
11927 
11956 
11985 
12014 
12043 
12071 
12100 
12129 
12158 


12187 
12216 
12245 
12274 
12302 
12331 
12360 
12389 


99255 
99251 
99248 
99244 
99240 
99237 
99233 
99230 


8Deg. 


124  18,99226 
124471 99222 
1247b  99219 


12504 
12533 
12562 
12591 
12620 


99215 
99211 
99208 
99204 
99200 


12649 
12678 
12706 
12735 
12764 
12793 
12821. 
12851 
12880 
12908 
12937 
12966 
12995 
13024 
13053 


13081 
13110 
13139 
13168 
13197 
13226 
13254 
13283 
1331 


i 


99303 
99300 
992'97 
99293 
99290 
99286 
99283 
99279 
99276 
99272 
99269 
99265 
99262 
99258 


99197 
991931 
99189: 
99186 
99182 
99178 
99175 
99171 
99167 
99163 
99160 
99156 
99152 
99148 
99144 


13917 

i 13946 

13975 

44004 

I  14033 

14061 

:|14090 

14119 

1 14148 

1114177 

114205 

i 14234 

•14263! 

114292 

114320 

14349 

114378 

,14407 

14436 

[14464 

14493 

14522 

114551 

14580 

14608 

14637 

14666 

14695 


N.cs.:| 

990271 
99023,1 
99019 
9901 5:| 

99011;! 

99006 
99002 
98998 
98994 
98990 
98986 
98982 
98978, 
98973 
98969 
98965 


98961 
98957 
98953 
98948 
98944 
98940 
98936 
98931 
98927 
98923 
98919 
98914 
14723j989l0 
14752198906 
14781  98902 


98723 
98718 
98714  48 
98709  47 
98704 
98700 


99141 

99137 

99133 

99129, 

99125 

991221 

99118 

99114 

99110 

99106 

99102 

99098 

99094 

99091 

99087 


13514 
13543 
13572 
13600 
13629 
13658 
13687 
13716 
13744 
13773 
13802 


99083 
99079 
99075 
99071 
99067 
99063 
99059 
99055 
99051 
99047 
99043 


13831199039 
13860  99035 
13889  99031 


N.CS.  N.  S.  iN.  CS.  N'.S.  i  N.  CS.  N.S 


83  Deff. 


m  Dejr. 


14810198897 
14838  98893 
1486798889 
14896  98884 
1492598880 
14954198876 
14982198871 
150ll|98867 
15040198863 
15069  98858 
15097198854 
1512619884. 
15155' 98845 
15184198841 
;  15212 1 98836 
15241 
;15270 
115292 
15327 
15356 
1 15385 
15414 
45442 
il5471 
15500 
1.5529 
15.557 
15586 
15615 


9  Deg. 

N.S.  inTc^v 

15643198769 
15672198764 
15701  98760 
15730; 98755 
15758 1 98751 
16787198746 
15816  98741 
15845 198737 
15873198732 
15902  98728 
15931 
15959 
15988 
16017 
16046 
1C074 
16103  98695 
16132 
|16160 
Il6189 
116218 

|16246|98671 
16275  98667 
16304  9866 
16333  98657 
163t)l  198652 
16390198648 
16419198643 
16447198638 
I6476i98633 
16505198629 
16533 1 98624 
16562  98619 
16591198614 


98690 
98686 
98681 
98676 


98832 
98827 
98823 
98818 
98814 
98809 
98805 
98800 
98796 
98791 
98787 
98782 
98778 
98773 


81  Deg. 


16620 
16648 
16677 
16706 
16734 


9S609 
98604 
98600 
98595 
98590 


16763  98585 
16792  98580 
16820198575 
16849! 98570 
16878|9S565 
16906  98561 
16935  98556 


44 
43 
42 
41 
40 
39 
38 
37 
36 
35 
34 
33 
32 
31 
30 

29 

28 

27 

26 

25  1 

24 

23 

22 

21 

20 

19 


N.CS.  I  N. 


80  i:>eg. 


A  TABLE  OP  NATUBAL  SINES. 


65 


10  Ueg. 


17365 
17393 

17422 
17451 
17479 
17508 
17537 


17651 
17680 


98430 
98425 

17708  98420 

17737 

17766 

17  794 


17823 
17852 
17880 
17909 
17937 
17966 
17995 
18023 
18052 
18081 
18109 
18138 
18166 
18195 
18224 


18252 
18281 
18309 
18338 
18367 
18395 
18424 
18452 
18481 
18509 
18538 
18567 
18595 
18624 
18652 


1'8681 
18710 
18738 
18767 
18795 
18824 
18852 
18881 
18910 


98399 
98394 
98389 
98383 
98378 
98373 
98388 
98362 
98357 
98352 
98347 
98341 
98336 
98331 
98325 


11  Deer. 


M  N.  S.  I  N.  CS.  I  N.  S.  N.  CS.   N.  S.  N.  CS. 

97815 
97809 
97803 
97797 
97791 
97784 
97778 
97772 
97766 
97760 
97754 
97748 
97742 
97735 
97729 
97723 
97717 
97711 
97705 
97698' 
97692' 
976861 
976801 
97673 
97667 
97661 
97655 
97648 
97642 
97636 
97630 


19081 
19109 
19138 
19167 
19195 
19224 
19252 
19281 
19309 
19338 
19366 
19395 
19423 
19452 
19481 
19509 


19533 
19566 
19595 
1  9623 
19652 
19680 
19709 
19737 
19766 
19794 
19823 
19851 
19880 
19908 
19937 


98240  20393 


20507 
20535 
20563 
20592 
20620 
20649 
20677 
18995J98179 120706 


18938  98190 

18967|98185 


97987 
97981 
97975 
97969 
97983 
97958 
97952 
97946 
97940 
97934 
97928 
97022 
97916 
97910 
97905 


12  L>eg. 


21246 
21275 
21303 
21331 
21360 
21388 
21417 
21445 
21474 
21502 
21530 
21559 
21587 
21616 
21644 


19024  98174 
19052!98168 


N.  CS.  I  N.  8. 


79  Deg. 


20734 
20763 


97899 
97893 
97887 
97881 
97875 
97869 
97863 
97857 
97851 
97845 
97839 
97833 
97827 
97821 


N.  (.'S. 


22098 
22126 
22155 
22183 
22212 
22240 
22268 
22297 
22325 
22353 
22382 
22410 
22438 
22467 


14  Dtg. 


13  Peg. 
N.S.  "nTcS.  N.S.  |N.  CS.  M 
22495 
22523 
22552 
22580 
22608 
22637 
22665 
22693 
22722 
22750 
22778 
22807 
22835 
22863 
22892 
22920 


97623 
97617 
97611 
97604 
97598 
97592 
97585 
97579 
97573 
97566 
97560 
97553 
97547 
97541 
97534 


22948 
22977 
23005 
23033 
23062 
23090 
23118 
23146J 
23175 
232031 
2323 1 i 
23260 
23288 
23316! 
1 23345 1 
2337397230 


97331 
97325 
97318 
97311 
97304 
97298 
97291 
97284, 
97278 
97271 
97264 
97257 
97251 
97244 
97237 


23401  97223 
23429 19721 7 
!23458!97210 
:23480i97203 
23514  97196 
23542  97189 
123571 197182 
23599197176 
23627i97169 
97162 
97155 
97148 
97141 
97134 


N. 


97528 
97521 
97515 
97508 
97502 
97496 
97489 
97483 
97476 
97470 
97463 
97457 
97450 

97444 

N.  CS.  !  N.  S. 


1  78  Deg.   il  77  Dt 


123656 
23684 
,23712 
,23740 
123769 


23797 
23825 
23853 
123882 
|23910 
123938 
'23966 
23995 
i24023 
[24051 
124079 
:24108 
24136 
24164 


i  N.  C8.  

i  76  1)^ 


N.S. 


24192  97030 

24220197023 

24249  97015 

24277  97008 

24305^97001 

[24333190994 

24362  96987 

24390196980 

24418,96973 

24446,96966 

2447496959 

2450396952 

24531  96945 

24559  96937 

24587  96930 

24615  96923 

2464496916 

24672  96909 

24700  [96902 

24728 

24756 

24784 

24813 

24841 

24869 

24897 

24925 

24953 

24982 

25010 

25038 


125066 
25094 
125122 
[25151 
25179 
!25207 
25235 
125263 
25291 
25320 
25348 
25376 
25404 
25432 
25460 


25488 
25516 
25545 
25573 
25601 
25629 
25657 
25685 
25713 
25741 
25769 
25798 
25826 
25854 


96807 
96800 
96793 
96786 
96778 
96771 
96764 
96756 
96749 
96742 
96734 
96727 
96719 
96712 
98705 


N.  CS. 


96697 
96690 
96682 
96675 
196667 
[96660 
96653 
,96645 
96638 
196630 
196623 
[96615 
(96608 
'96600 
I  N.S 


1  75  Deg. 


66 


A    TABLE    OF    NATURAL    SINES. 


33 


15  De^r. 


N.« 


0  258  Sr2 

1  25910 
25938 
25966 
25994 
26022 
26050 

;6U79 
26107 
26135 
26163 
26191 
19 
26247 
26275 
26303 
26331 
26359 
26337 


N.  CSi. 


96585 
96578 
96570 
96562 
96555 
96547 
96540 
96532 
96524 
96517 
96509 
96502 
96494 
96486 
96479 
9647] 
96463 
98456 


26415  9844 
26443  96440 
26471 '98433 
26500' 96425 
26528  96417 
26556196410 


16  Deg. 


26584 
26612 
26640 

28  26668 

29  26696 

30  26724 


9640 

96394 

96386 

96379 

96371 

96363 


31  26752 

32  26780 
26803 


26836 
26864 
26892 
26920 
26948 
26976 
27004 
27032 
27060 
27088 
27116 
45127144 
46  27172 
4727200 
48  27228 
49127256 
50127284 
51  27312 
52127340 
53127368 
54127396 
55  27424 
56 '27452 
57127480 
58 1 27508 
59  27536 


96355 
96347 
95340 
96332 
96324 
96316 
96308 
96301 
96293 
96285 
96277 
96269 
96261 
96253 
96246 


96238 
96230 
96222" 
96214 
96206 
96198 
96190 
96182 
96174 
96166 
96158 
96150 
96142 
96134 


I  N.  CS. 

96593! 27564  96126 
2759296118 
27620  96110 
27648  96102 
27676  96094 
27704  96086 
27731  96078 
27759  96070 
27787  96062 
27S 15  96054 
27843  96046 
27871  96037 
27899  96029 
27927  96021 
27955  96013 
27983  9^0^ 
280 1 1  35997 
28039  95989 
28067  9598 
28095  95972 
28123  95964 
28150  95956 
28178  95948 
28206  95940 
28234  95931 
28262  95923 
28290  95915 
28318  95907 
28346  95898 
28374  95890 
28402  95882 


17  Ueg. 


N.s. 


29237 
29265 
29293 
29321 
29348 
29376 
29404 
29432 
29460 
29487 
29515 
29543 
29571 
29599 
29626 
29654 


29682 

29710 

9737 


N.  CS. 


95630 
95622 
95613 
95605 
95596 
95588 
95579 
95571 
95562 
95554 
95545 
95536 
95528 
95519 
95511 
95502 


18  Peg.  || 

N.  CS.  li 


N.S. 
[30902 
30929 
30957 
30985 
31012 
31040 
31068 
31095 
31123 
31151 
31178 
31206 
31233 
31261 
31289 
31316 


95493 
95485 
95476 


29765  95467 
:9793|95459 


29821 
29849 
29S76 
29904 
29932 
29960 
29987 
30015 
30043 
30071 


28429  95874 
28457  95865 

;8485  95S57 
28513  95849 
28541  95841 
28569  95S32 

8597  95824 
28625  95816 
28652  95807 
28680  95799 
28708  95791 


95450 
95441 
5433 
95424 
95415 
95407 
95398 
95339 
95330 
95372 


30098 
30120 
30154 
30182 
30209 
30237 
;0265 
30292 
30320 
30348 
30376 


31344 
31372 
31399 
31427 


J1510 
31537 
31565 
31593 
31620 
31648 
31675 
31703 
31730 


28736  95782  '30403 


28764  95774 
28792  95766 
28820  95757 


30431 
30459 
30486 


95106 
95097 
95088 
95079 
95070 
95061 
95052 
95043 
95033 
95024 
95015 
95006 
94997 
94988 
949791 
94970 


19  Peg.  [ 
N  CS  [M 
94552  60 


N.S, 


94961 
94952 
94943 
94933 


U454  94924 
31482  94915 


94906 
94897 
94888 
94878 
94869 
94860 
94851 
94842 
94832 


N.  CS 


N.S. 


74  Peer. 


8847  95749 
JS875|95740 
28903  95732 


95724 
95715 
95707 
95698 
95690 
95681 
95673 


28931 

28959 

28987 

29015 

29042 

29070 

29098 

29126|95664 

29154  95656 

29182,95647 

29209  95639 

N.  CS.  I  N  8. 


"3  Peg. 


30514 

30542 

30570 

30597 

30625 

30653 

30680 

30708 

130736 

i30763 

30791 

30819 

30846195124 

30874  95115 

N.CS.  I  N.S. 


32557 
32.1S4 
32612 
32639 
32667 
32694 
32722 
32749 
32777 
32804 
32832 
32859 
32887 
32914 
32942 
32969 


94542 
94533 
94523 
94514 
94504 
94495 
94485 
94476 
94466 
94457 
94447 
94438 
94428 
94418 
94409 


32997 
33024 
33051 
33079 
33106 
33134 
33161 
33189 
33216 
33244 
33271 
33298 
33326 
33353 
33381 


94399 
94390 
94380 
94370 
94361 
94351 
94342 
94332 
94322 
94313 
94303 
9429.3 
94284 
94274 
94264 


iPeg. 


33408 
33436 
33463 
33490 
33518 
33545 
33573 
33600 
33627 
33655 
33632 
33710 
33737 
33764 


94254 
94245 
94235 
94225 
94215 
94206 
94196 
94186 
94176 
94167 
94157 
94147 
94137 
94127 
33792  94^1J_8 
33819  94108 
33846194098 
33874194088 
33901194078 
33929  94068 
33956  94058 
33983  94049 
34011  94039 
34038  94029 
34065  94019 
34093  94009 
34120,93999 
34147193989 
34175,93979  _ 
■N.CS.!  "N.S.  Im 
-1 


27 
26 
25 

24 
23 
22 
21 
20 
19 
18 
17 
16 

15 

14 

13 

12 

11 

10 

9 

8 

7 

6 

5 

4 

3 


70  Peg. 


A    TABLE    OF    NATURAL    SINES. 


67 


20  Ueg. 


N.  S. 


21  Peg. 

~N.  S.  x\.  CS. 


34202 
34229 
34257 
34284 
34311] 
34339! 
343061 
34393 
34421' 
34448 
34475: 
34503 
345:30 
34557 
34584 


93829 


15  34612  93319 
:j4639  93809  i 
34666l93799| 
34694193789 
3472 1193779 1 

20  347481 9376C; 

21  34775193759: 
34803 193748 1 
348301937381 
34857193728; 
34884!  93718! 
34912193708! 
34939l93698i 


93358 
93348 
93337 
93327 
93316 
93306 
93295 
3285 
93274 
93264 
93253 
93243 
93232 
93222 
93211 
93201 


34966 
34993 
35021 


31  35048 

32  35075 
33 1 35102 
34135130 
35|35157 
36 [35 1 83 
37:35211 
38,35239 
""  35266 

35293 
35320 
35347 
35375 
35402 
35429 
35456 
35484 
35511 
35538, 
35565' 
35592 
35619 
35647 
35674 
35701 
35728 
35755 
35782 
59  35810 


93688 
93677i 
93667 
93657 
93647 
93637 
93626 
93616 
93606 
93596 
93585 
93575 
93565 
93555 
93544 
93534 
93524 
93514 


36271 
36298 
36325 
36352 
36379 
36406 
36434 
36461 
36488 
36515 
38542 
36569 
36596 
36623 
36650 

36677 

36704 

36731 

36758 

36785 

36812 

36839 

36867 

' 36894 

36921 

36948 

36975 

37002 

' 37029 

37056 

I  37083 

37110 

I  37137 

137164 

!i37191 

37218 

37245 

l'37272 

j 37299 

|37326 

37353 

37380 

37407 

37434 


M'N.CS.I  N.  S. 
1  69  Deg. 


93190 
93180 
93169 
93159 
93148 
93137 
93127 
93116 
93106 
93095 
93084 
93074 
93063 
93052 
93042 
930311 
J3020 
93010 
92999 
92988 
92978 
92967 
92956 
92945 
92935 
92924 
92913 
92902 
92892 
92881 


iii  Dejr. 


N.  S. 


23  Peg. 

N.  CS. 


N.  S, 


39073 
39100 
39127 
39153 
;39180 
39207 
39234 
39260 
39287 
39314 
39341 
39367 
39394 
39421 
39448 
39474 
39501 
39528 
39555 
39581 


92050 
92039 
92028 
92010 
92005 
91994 
91982 
91971 
91959 
91948 
91936 
91925 
91914 
91902 
91891 
91879 


24  Peg. 


N.  S.  I  N.  CS.  i  M 


40674  913 
40700  913 
40727  913 
407531913 
40780|913 
40806:91295155 
40833i91283 
40860191272 
40886  91260 
40913191248 
40939 1 9 1236 
40966  91224 
40992  91212 
41019|91200 
1188 
1176 


41098 

!41125 

141151 

41178 

41204 

;41231 

41257 

141284 

,41310 

;41337 

41363'91044|34 

41390 1 9 1032 1 33 

;41416  91020  32 

;4 1443  91008  31 

414G9  90990  30 


38698 
138725 
!  38752 
(38778 
138805 
,38832 
38859 
38886 
38912 
38939 
38966 
,38993 
39020 
39046 


N.  CS.  I  N.& 


68  Peg.   i 


N.  CS. 


39902  91694 
39928;916S3 
39955191671 
39982  91660 
40008191648 
40035.91636 
40062191625 
400S8J91613 
40115:91601 
40141  91590 
,;40168'91578 
1 40195191566 
;  40221:91555 
140248  91543 
140275  91631 


92209140301 
92198 1'40328 
921 861 40355 
92175140381 
92164140408 
92152140434 
92141 j 40461 
92130  140488 
92119140514 
92107  40541 
92096140567 
92085  i:40594 
92073  i40621 
92062  40647 


N.S.      N.  CS, 


67  Peg. 


41496  90984 
41522  90972 
41549  90960  27 
41575  90948 '26 
;41602  90936i25 
41628190924124 
141655  9091i|23 
41681 190899122 
!!4i707:90S87  21 
j'4 1734 1 90875  20 
141760190863  19 
r41787|9085!!l8 
141813,908391 17 
,41840  90836  16 
41866  90814  15 


91519 
91508 
91496 
91484 
91472 
91461 
91449 
91437 
91425 
91414 
91402 
91390 
91378 
91366 


N.  S. 


60  Peg. 


'41892  90802 
[41919  90790 
4 1945;  90778 
41972190766 
41998  90753 
',4202490741 
42051 190729 
42077j90717 
42 104' 90704 
42130 190692 
42156  90680 
42183190668 
42209  90655 
42235 '90643 
N.  CS.l  N.S. 


65  Deg. 


68 


A    TABLE    OP    NATURAL    SINES. 


25  Deg.  ^26  Ueg.  i 


N.S. 
4226 
42288 
4231;-) 
1234 1 
42307 
423<J4 
42420 
4244  G 
42473 
42499 
42525 
42552 
42578 
42604 
42631 
42657 


0 

1 
2 
3 
4 
5 
6 
7 
8 
9 

10 
II 
12 
13 
14 
15 

16|42683 
1742709 
1842736 
19  42762 
20 
21 

22  42841 
42867 
42894 
4292( 
42946 
4297 
42999 


9'06:31 
90618 
90606 
90594 
90582 
90569 
90557 
90545 
90532 
90520 
90507 
90495 
90483 
90470 
90458 
90446 


90433 
90421 
90408 
90396 
42788190383 
12815  90371 
90358 
90346 
90334 
90321 
90309 
90296 
90284 
43025  90271 
43051  90259 


43077 
43104 
43130 
43156 
43182 
43209 
43235 
43261 


90246 
90233 
90221 
90208 
90196 
90183 
90171 
90158 


43287'90146 
43313I90133 


90120 
90108 
90095 


43340 

43366 
43143392 
44  43418190082 
■^  434451 90070 

43471  90057 

43497  90045 


48  43523 
49143549 
50|43575 
51143602 
52143628 
53143654 
5443680 
55  43706 
56|43733 
57,43759 
58  43785 
59143811 


90032 
90019 
90007 
•S9994 
89981 
89968 
89956 
89943 
89930 
89918 
89905 
89892 


MJN.CS.  N.S 
I  64  Deg. 


N.  CS. 


14255 
44281 
44307 
44333 
44359 
44385 
14411 
44437 
14464 
14490 
14516 
14542 
4456S 
44594 
14620 


89879; 

89867, 

89854! 

S9841I 

89S28I 

898 16| 

89803; 

S9790; 

89777 

897641 

89752 

89739 

89726 

89713 

89700 

89687 

89674 

89662 

89649 

89636 

89623 

89610 

89597 

89584 

89571 

89558 

S9545 

89532 

89519 

89506 

8  9 '193 

S9480 

894671 

89454 


Deg. 


N.  S. 


45399 
45425 
45451 
45477 
45503 
45529 
45554 
45580 
45606 
45632 
45658 
45684 
45710 
45736 
15762 
45787 


N.  US. 


45813 
45839 
45865 
45S91 
45917 
15942 


89101 
89087 
89074 
89061 
89048 
89035 
89021 
89008 
88995 
88981 
88968 
88955 
88942 
88928 
88915 
88902 


^l>eg^_j|  29  Deg.     I 
xTsT 7.V.  CS.  ij  N.  s.  Tn.  cs.  m 


146947,88295 
46973  88281 
46999  88267 
47024.88254 
47050  88240 


88888 
88875 
88862 
88848 
8S835 
S8822 


4598888808 
4599488795 
4602088782 


46046 
46072 
46097 
46123 
46149 
46175 


89441 


llifi 


89428 j 
89415!! 
894021! 
89389  ! 
89376: 
893631; 
S93oO|; 
89337! 
89324  1 
893 11 1! 
8929S! 


46201 
46228 
46252 
46278 
46304 
46330 
46355 
46331 
46407 
40433 
46458 
46484 
46510 
146536 
!;46561 
l!46587 
'46613 
46639 


88485 

88472 

88458 

|46664  88445 

'46690  88431 

!46716 88417 

,46742  88404 

46767  88390 

146793  88377 

468l9'S8363 

i46844'8S349 

4687088336 

46896j88322 

!46921  88308 


88768 
88755 
88741 
88728 
88715 
88701 


63  Deg.  i 


N.CS.i  N.g 
62  Deg. 


,47741 
47767 
47793 
47818 
47844 
47869 
47895 
47920 
47946 
47971 
47997 
48022 
48048 
48073 
48099 


48124 

48150 

48175 

48201 

48226 

48252 

48277 

48303 

48328187546 

483.54  87532 

48379 


87868 
87854 
87840 
87826 
87812 
87798 
87784 
87770 
87756 
S7743 
87729 
87715 
87701 
87687 
87673 
876.59 
87645 
87631 
87617 
87603 
87.539 
87575 
87561 


48405 
48430 


S  7.504 
87490 


18456  J87476 


61  De<r. 


4848l!S7462;G0 
48.506  S7448!59 
48532(87434158 
48557  !87420i57 
48583'87406!56 
48608  87391  !55 


48634 
48659 
48684 
48710 
48735 
48761 
48786 
48811 
48837 
48862 


48888 
48913 
48938 
48964 
48989 
49014 
49040 
49065 
49090 
49110 
49141 
49166 
49192 
49217 
49242 


8737754 

87363153 

8734  9!  52 

87335!51 

87321  i50 

87.306  49 

87292148 

87278|47 

87264146 

87250  !45 

87235144 

8722143 

8720742 

87193  41 

87178  40 

8716439 

87150  38 

87136  37 

87121 

87107 

87093 

87079 


87064 
87050 
870^6 
87021 
87007 
86993 
36978 
86964 
86949 
86935 
86921 
86906 
86892 
86878 
86863 
86849 
86834 
86820 


49268 
49293 
49318 
49344 
49369 
49394 
49419 
49445 
49470 
49495 
49521 
49546 
495?  1 
19596 
49622 
49647 
49672 
49697 
49723 
49748 
49773 
49798 
49824 
49849 
49874 
49899 
49924 
49950 

19975  

N.  CS.  I   N.S.     M 


,86805 
86791 
186777 
!  86762 
18  6748 
\S6733 
86719 
86704 
86690 
86675 
86661 
,86646 
86632 
'866171 


60  DeiT. 


A  TABLE  OF  NATUKAL  SINES. 


5000086603 
50025^86588 
50050l86573| 
50076 
5010] 
50126 
0151 
50176 
50201 

50227  

50252  86457 


5027 

50302 

50327 

50352 

50377 


30  Ueg. 


31  Ueg. 


N.  S.  |N.  CS.  |i_N^S^ 
51504 
51529 
51554 
51579 
51004 
51628 
51653 
51 678 
51703 
51728 
51753 
51778 
51803 
51828 
51852 
51877 


86442 
86427 
86413 
88398 
86384 


86369 
86354 
86340 
86325 
86310 
86295 
86281 
86266 
86251 
86237 
8G222 
86207 
80192 
86178 
86163 


50403 
50428 
0453 
50478 
50503 
50528 
50553 
505781 
50603 
506281 
50654J 
50679| 
50704] 
50729 

50754 

50779  8C 148 
50804  86133 
50829186119 
50854186104 
50879  86089 
50904186074 
50929186059 
50954  86045 


51104  85956 
51129  85941 


52646 
52671 
52696 
52720 
52745 
52770 
52794 
52819 
52844 
52869 
52893 
52918 
52943 
52967 


N.  CS.  I  N.  S. 
59  Deg. 


N.  C8.  N.  S, 


N.  CS. 


85020 
85005 
84989 
84974 
84959 
84943 
84928 
84913 
84897 
84882 
84866 
84851 
84836 
84820 


32  Ueg. 


N.S.  IN.  CS. 


Si  Peg. 

JSfTcs." 


N.S, 


52992  84805  154464 

53017  84789  i5448S 

53041  84774  154513 

53066  84759-54537 

53091  84743  154561 

53115  84728 

53140  84712 

53164 

53189 

53214 

53238 

53263 


53288 
53312 
53337 
53361 


53386 
53411 
53435 


84619 


84557 
84542 
84526 


53460i£4511| 

53484184495 


53509 


84480 


84324 
84308 
84292 
84277 
84261 
84245 
84230 
84214 
84198 
84182 
84167 
84151 
84135 
84120 
84104 


58  Deg. 


57  Peg. 

17 


55218 


N.  CS.  N.  S, 


83867 
83851 
83835 
83819 


34  Deg. 

nTsT  I  N.  CS. 


55919  82904 
55943  82887 
55968  82871 

55992  82855 


83804  56016182839 

83788  56040  82822 
83772  56064  82806 


83756 
83740 
83724 
83708 
83692 
82676 
83660; 
83645 
83629 


56  Des. 


56088182790 
50112  82773 


56305 
56329 
56353 
56377 
56401 
56425 


82643 
82626 
82610 
82593 
82577 
82561 


56449  82544 


56473 
56497 
56521 
56545 
56569 
56593 
56617 
56641 


82528 
82511 
82495 
82478 
82462 
82446 
82429 
82413 
56665  82390 
56689182380 


56713 
56736 
56760 
56784 
56808 
56832 


82363 
82347 
82330 

82314 
82297 
8228 


56856  82264 


56880 
56904 
56928 
56952 
56976 


57000  82165 

57024 

57047 

57071 

57095 


82248 
82231 
82214 
82198 
82181 


82 148 
82132 
82115 
82098 
57119182082 
5714382065 
..7167182048 
57191 182032 
57215  820 15 
57238  81999 
57262181982 
57236  81965 
57310|81949 
57334  81932 
N.  CS.  I  N.  S. 


55  Deff. 


70 


A  TABLE  OP  NATURAL  SINES. 


35  i)ejr. 


57 

57381 
57405 

3  57429 

4  57453 
57177 
57501 
57524 
57548 
57572 
57596 
57(519 
57643 
57687 
57691 
57715 


:358'8r9l5h' 


6 

7 

8 

9 
10 
11 
12 
13 
14 
15 

16  5773S 

17  57762 

18  57786 

19  57S10 

20  57833 
57857 
57881 
57904 
57928 
57952 
57976 
57999 
58023 
5804 


81899 

81882 

81865 

81848 

81832 

8181 

81798 

81782 

81765 

81748 

81731 

81714 

81698 

8168 

81664 


30|58070 

31 

32 

83 

34 

35 

36 

37 


81647 
81631 
81614 
81597 
81580 
81563 
81546 
81530 
81513 
81496 
81479 
81462 
81445 
81428 
81412 


58094 
581 18i 
58141 
58165 
58189 
58212 
58236 
38|t/82C0 
39158283 
40|58307 

41  58330 

42  58354 

43  58378 

44  58401 

45  58425 
46 
47 
48 
49 
50 
51 
52 
53 
54 


81395 
81378 
81361 
SI  344 
81327 
81310 
81293 
81276 
81259 
81242 
81225 
81208 
81191 
81174 
81157 


58449 
58472 
58496 
58519 
58543 
58567 
53590 
58614 
58637 
58661 
58684 
58708 
58731 
58755 


81140 
81123 
81106 
81089 
81072 
81055 
81038 
81021 
81004 
80987 
80970 
80953 
80930 
80919 
N.  Ce>.  N.  S.' 
54  Deg. 


36  Deg^.  I   37  Peg. 
i\.  (js. i  'nTs~"n.Ts. 


N.  S. 
58779 
58802 
58826 
58849 
58873 
58896 
58920 
58943 
5896 
58990 
59014 
59037 
59061 
59084 
59108 
59131 


60182 
00205 
6022S 
00251 
60274 
60298 
60321 
60344 
60367 
60390 
60414 
GO  437 
60460 
60483 
60506 
60529 


S0368i 
80351 j 
80334 
30316 
80299  160991 


60553 
60570 
60599 
60622 
60645 
60668 
60691 
60714 
60738 
60761 
60784 
60807 
60830 
60853 
00^8^ 

60899 
60922 
60945 
60968 


80282 
S0264 
80247 
80230 
80212 
30195 
30178 


61015 
61038 
161061 
{61084 
61107 
161130 
161153 


80160  16117 
80143  61199 

80125  61222 


80108 
800911 
80073 
800561 
80038! 
59972!8002l| 
599951800031 
60019  79986 
60042179968 
60065 I79G51 
60089179934 
601 12 '799 16 
G0l35i79899l 
60 1 58 179881! 
N.CSri  N.  S.  I 
53  Deg.  ' 


79864 
79846 
79829 
7t:8 1 1 
79793 
79776 
79758 
79741 
79723 
79706 
79688 
79671 
79653 
79635 
79618 
79600 
79583 
79565 
79547 
79530 
79512 
79494 
79477 
79459 
79441 
79424 
79406 
79338 
79371 
79353 
79335 
7~93r8 
79300 
79282 
79264 
79247 
79229 
'(9211 
79193 
79176 
79158 
79140 
79122 
79105 
79087 
79069 


62932  77715 
62955  77696 
6297777678 
63000 177660 
63022177641 
63045177623 


3li  Peg.   I  39  Peg. 

N.  CS.  N.  S.  1  N.  CS.  M 
60 
59 
58 
57 
56 
55 
54 
53 
52 
51 
50 
49 
48 
47 
46 
45 


61566 
61589 
61612 
61635 
61658 
61681 
61704 
61726 
61749 
61772 
61795 
61818 
61841 
61864 
61887 
61909 


78801 
78783 
78765 
78747 
78729 
78711 
78694 
78676 
78658 
78640 
78622 
78604 
78586 
78568 
78550 
7853_2 
61932  785~14 
61955  78496 


61978 
62001 
62024 
62046 
62069 
62092 
62115 
62138 
62160 
62183 
62206 
62229 
62251 


79051 
79033 
79015 
7899S 
78980 
78962 
78944 
78926 
78908 
78891 
78873 
61497,78855 
61520  78837 
61543  78819 
N.  CS.  I  N.  S.  I 
52  Deg. 


62274 
62297 
62320 
62342 
62365 
62388 
82411 
62433 
62456 
62479 
62502 
62524 
62547 
62570 
62592 


78478 
78460 
78442 
78424 
78405 
78337 
78369 
78351 
78333 
78315 
78297 
78279 
78261 


782431 
782251 
78206 
78188 
78170 
78152 
78134 
78116 
78098 
78079 
78061 
78043 
78025 
78007 
77988 


62796177824 
628l9i77806 
62842  77788 
«i2864i  77769 
62887  77751 
62909 1 77733 

r  51  Deff. 


63068 
63090 
63113 
63135 
63158 
63180 
63203 
63225 
63248 
6327^1 
63293 
63316 
33338 
63361 
63333 
63406 
B428 
63451 
63473 
6349G 
63518 
63540 
63563 
63585 
63608 


63630 
63653 
63675 
63898 
63720 
63742 
63765 
63787 
63810 
63832 
63854 
63877 
83899 
63922 
63944 


77605 
775S6 
77568 
77550 
77531 
77513 
77494 
77476 
77458 
77439 


77421 
77402 
77384 
77366 
77347 
77329 
77310 
77292 
77273 
77255 
77236 
77218 
77199 
77181 
77162 


63966 
63989 
64011 
64033 


77144 
77125 
77107 
77088 
77070 
7705 1 
77033 
77014 
76996 
76977 
78959 
76940 
76921 
76903 
76884 


76866 
76847 
76828 
76810 


64056176791 
64078176772 
64100  76754 
64123  76735 
64145  76717 
64167  76698 
64190  76679 
64212,76661 
64234178642 
64256:76623 
N.CS.i  N.S. 
50  itesT 


J 


A  TABLE  OF  NATURAL  SINES. 


71 


10 

11 

12 

13 

14 

15 

16 

17 

18 

19 

HO 

21 

22 

23 

24 

25 

26 

27 

28 

29 

30 

31 

32 

33 

34 

35 

36 

37 

38 

39 

40 

41 

42 

43 

44 

45 
46 
47 
48 
49 
50 
61 
62 
53 
54 
55 
56 
57 
58 
59 
60 
M 


40  Deg. 


N.S. 

64279 
64301 
64323 


IN.CS. 
70604 
76586 
76567 


64346  7654S 
64368  76530 
64390  76511 
644 1'2  76492 
64435  76473 


64457 
64479 
64501 
64524 
64546 
G4568 
64590 
64612 


64635 
64657 
64679 
64701 
64723 
64746 
64768 
64790 
64812 
64834 
64856 
64878 
64901 
64923 
64945 
64967 
64989 
65011 
65033 
65055 
65077 
65099 
65122 
65144 
65166 
65188 
65210 
65232 
65254 
65276 


76455 
76436 
76417 
76398 
76380 
76361 
6342 
76323 


76304 
76286 
76267 
76248 
76229 
76210 
76192 
76173 
76154 
76135 
76116 
76097 
76078 
76059 
6041 
76022 
76003 
75984 
75965 
75946 
75927 
75908 
75889 
75870 
75851 
75832 
75813 
75794 
75775 
75756 


41  Deg. 


N.S. 
65606 
6562S 
65650 
65672 
65694 
65716 
6573S 
65759 
65781 
65803 
65825 
65847 
65869 
165891 
65913 
65935 


N.  CS. 


75471 


66913 


75452  166936 


65298175738 
6532075719 


65956 
65978 
66000 
66022 
66044 
66066 
66088 
66109 

66ir;i 

66153 
66175 
66197 
66218 
66240 
66262 
66284 
66306 
66327 
66349 
66371 
66393 
66414 
66436 
66458 
66480 
66.50 
66523 
166545 
i66566 
66588 
166610 
16663 


75165 
75146 
75126 
75107 
75088 
75069 
75050 
75030 
75011 
74992 


75433 
75414 
75395 
75375 
75356 
75337 
75318 
75299 
76280 
75261 
75241 
76222 
75203 
76184 


66956 
66978 
66999 
67021 
67043 
67064 
67086 
67107 
67129 
67151 
67172 
67194 
67215 
67237 


67258 
67280 
6730] 
67323 
67344 
67366 
67387 
67409 
67430 
67452 


N.CS. 
74314 
74295 
74276 
74256 
74237 
74217 
74198 
74178 
74159 
74139 
74120 
74100 
74080 
740G1 
74041 
74022 


43  Deg.  44  Deg. 

N.S.  "nTcsT   "nTI 


749731  67473 

49531167495 

4934167516 

74915  67538 

74896  67559 


74876  67580 

4867167602 

74838I67G23 

74818  67645 


74799 
74780 
74760 
74741 
747221 
74703! 
74683 
74664 
74644 
74625 
74606 


67666 
676S8 


74002 
73983 
73963 
73944 
73924 
73904 
73885 
73865 
73846 
73826 
73806 
73787 
73707 
73747 
73728 


68200 
68221 
68242 
68264 
08285 
68306 
68327 
68349 
68370 
168391 
68412 
:68433 
;68456 
68476 
68497 
'68518 
;68539 
68561 
168582 
68603 
68624 
68645 
68666 
68688 
68709 
68730 
68751 


69466 
69487 
69508 
69529 
69549 
69570 
69591 
69612 
69633 
69654 
69675 
69696 
69717 
69737 
69758 
69779 


72817 
72797 
72777 
72757 
72737 
72717 
72697 
72677 
72667 
72637 
72617 
6S772I72597 
687931 72577 
688 14^2557 
68835  72537 


737081 
730881 
736691 
73649 
73629 
73610 
87709  j  735901 
67730' 735701 
67752IV3551 


65342 
65364 
65386 
65408 
65430 
65452 
65474 
65496 
66518 
65540 
66662 
65584 


75699 
75680 
75661 
75642 
75623 
75604 
75585 
75566 
75647 
76528 
75509 
75490 


74586 
74567 
;  666531 74548 
!  66676  74528 


65606175471 

N.  CS. '  N.  S. 


66697 
66718 
66740 
66762 
66783 
66805 
166827 
66848 
66870 
66891 


I  49  Deg.   I 


74509 
74489 
4470 
74451 
74431 
74412 
74392 
74373 
74353 
74334 


67773 
67795 
67816 
67837 
67859 
67880 


73531 
73511 
73491 
73472 
73452 
73432 


67901 
67923 
67944 
67965 
67987 
68008 
68029 
68051 
68072 
68093 
68115 
68136 


48  Deg.  I 


73412 
73393 
73373 
73353 
73333 
73314 
73294 
73274 
73254 
73234 
73215 
73195 


68857172517 
6887872497 
68899:72477 
68920172457 
6894  ij  72437 
68962  72417 
68983172397 
69004:72377 
69025172357 
69046:72337 
69067J723I7 
69088  72297 
69109172277 
69130172257 
69151172236 
69172  72216 


69800 
69821 
69842 
69862 
69883 
69904 
69925 
69946 
69966 
69987 
70008 
70029 
70049 
70070 
70091 


6815773176 
6817973165 
6820073135 
N.CS.  I  N.S. 


47  Deg. 


69193  72196 

69214 

69235 

69256 

69277 

69298 

69319  72075 

69340 

69361 

69382 

69403 

69424 

69445 

69466 


N.CS. 


N.S. 


46  Deg. 


70112 
70132 
70153 
70174 

70195171223 
70215 
70236 
70257 
70277171141 
70298] 7 112 i 
70319  71100 
70339  71080 
0360  71059 
70381  71039 
70401  71019 
70422170998 
70443170978 
70463170957 
70484170937 
70505170916 
70525 170896 
70546  70875 
70567|70856 
70587  70834 
70608170813 
70628170793 
70649  70772 
70670  70752 
70690 1707  J I 
70711 170711 
N.S 


N.CS. 
i  45  Deg/ 


A  TRAVERSE  TABLE, 

SHOWINS   THK    DirfEBXjm    OF 

LATITUDE    AND    DEPARTURE 

FOR     DISTANCES    BETWEEN    1     AND    100,    AND    FOR    ANOl  It 
TO    QUARTER     DEGREES     BETWEEN     1°    AND    90* 


TRAVERSE    TABLE. 


1' 

s 
c 
9 

1 

iDeg. 

iDeg. 

IDeg. 

1 

1 

Lat. 

Dep. 
0.00 

Lat. 

Dep. 

Lat. 

Dep.  1 
0.01 

1.00 

1.00 

0.01 

1.00 

/b 

2.00 

0.01 

2.00 

0.02 

2.00 

0.03 

2 

3 

3.00 

0.01 

3.00 

0.03 

3.00 

0.04 

3 

4 

4.00 

0.02 

4.00 

0.03 

4.00 

0.05 

4 

5 

5.00 

0.02 

5.00 

0.04 

5.00 

0.07 

6 

6 

6.00 

0.03 

6.00 

0.05 

6.00 

0.08 

6 

7 

7.00 

0.03  1 

7.00 

0.06 

7.00 

0.09 

7 

8 

N.OO 

0.03  1 

8.00 

0.07 

8.00 

0.10 

8 

9 

9.00 

0.04 

9.00 

0.08 

9.00 

0.12  1 

9 

10 

iO.OO 

0.04 

10.00 

0.09 

10.00 

0.13 

10 

11 

11.00 

0.05 

li.OO 

0.10 

11.00 

0.14  1 

if 

12 

12.00 

0.05 

12.00 

0.10 

12.00 

0.16  j 

12 

13 

13.00 

0.06  1 
0.06 

13.00 

0.11 

13.00 

0.17 

13 

14 

14.00 

14.00 

0.12 

14.00 

0.18  i 

14 

15 

15.00 

0.07 

15.00 

0.13 

15.00 

0.20 

15 

16 

16.00 

0.07 

16.00 

0.14 

16.00 

0.21 

16 

17 

17.00 

0.07  1 

17.00  j 

0.15 

17.00 

0.22 

17 

18 

18.00 

0  08  j 

18  :)0 

0.16 

18.00 

0.24 

18 

19 

19.00 

0.08  1 

19.00 

0.17 

19.00 

0.25 

19 

2-0 

20.00 

0.09  ! 

20.00 

0.17 

20.00 

0.26 

20 

21 

21.00 

0.09  i 

21.00 

0.18 

21.00 

0.27 

21 

22 

22.00 

0.10 
0.10 

22.00 

0.19 

22.00 

0.29 

22 

23 

23.00 

23.00 

0.20 

23.00 

0..30 

23 

24  1 

24.00 

0.10 

24.00 

0.21 

24.00 

0.31 

24 

25 

25.00 

O.ll 

25.00 

0.22 

25.00 

0.33 

25 

20 

26.00 

0.11 

26.00 

0.23 

26.00 

0.34 

26 

27 

27.00 

0.12 

27.00 

0.24 

27.00 

0.35 

27 

28 

28.00 

0.12 

28.00 

0.24 

28.00 

0.37 

28 

29 

29.00 

0.13 

29.00 

0.25 

29.00 

0.38 

29 

30 

30.00 

0.13 

30.00 

0.26 

ao.oo 

0.39 

30 

'  31 

31.00 

0.14 

31.00 

0.27 

31.00 

0.41 

31 

32 

32.00 

0.14 

32.00 

0.28 

32.00 

0,42 

32 

33 

33 .  00 

0.14 

83.00 

0-29 

33.00 

0.43 

33 

34 

34.00 

0.15 

34.00 

0.30 

34.00 

0.45 

34 

35 

35.00 

0.15 

35.00 

0.31 

35.00 

0.46 

35 

36 

36.00 

0.16 

36.00 

0.31 

''    36.00 

0.47 

36 

37 

37.00 

0.16 

37.00 

0.32 

37.00 

0.48 

37 

38 

38.00 

0.17 

38.00 

0.33 

!  38.00 

0.50 

38 

39 

39.00 

0.17 

39.00 

0.34 

1  39.00 

0.51 

39 

40 

40.00 

0.17 

40.00 

0.35 

i  40.00 

0.52 

40 

41 

41.00 

0.18 

41.00 

0.36 

i  41.00 

0..54 

41 

42 

42.00 

0.18 

42.00 

0.37 

42.00 

0.55 

42 

43 

43.00 

0.19 

43.00 

0.38 

1  43.00 
44.00 

0.56 

43 

44 

44.00 

0.19 

44.00 

0.38 

0.58 

44 

45 

45.00 

0.20 

45.00 

0.39 

45.00 

0.59 

45 

46 

46.00 

0.20 

46.00 

0.40 

1  46.00 

0.60 

46 

47 

47.00 

0.21 

47.00 

0.41 

47.00 

0.62 

47 

48 

48.00 

0.21 

48.00 

0.42 

I  48.00 

0.63 

48 

49 

49.00 

0.21 

49.00 

0.43 

j  49.00 

0.64 

49 

60 

50.00 

0.22 

50.00 

0.44 

jl  50.00 

0.65 

50 

J 

Dep. 

Lat. 

Dep. 

Lat. 

j  Dep. 

i     "'' 

Lat. 
Deg. 

"5 

Q 

891  Deg. 

89-^ 

Deg. 

travep.sk  tahle. 


5 

i" 

r. 

iDeg. 

1 

Dcg. 

11     i  Deg. 

C 

i  ^ 
P 

Lat. 

'  Dop. 

||   Lai. 

;  Dep. 

La,, 

1 

Dep. 

TI 

51.00 

!  0.22 

i   51.00 

'  0.45 

1  51.00 

■  0.67 

~6T 

;V2 

52.00 

0.23 

[I  52.00 

((.45 

j  52.00 

;  (J.  68 

52 

53 

53.00 

0.23 

i  53.00 

0.46 

!  53.00 

i  0.69 

,   53 

i'?4 

54.00 

0.24 

54.00 

0.47 

54.00 

0.71 

54 

5.'! 

55.00 

0.24 

55.00 

0.48 

1  56.00 

0.72 

■      65 

r)G 

50.00 

0.24 

56.00 

0.49 

j  56.00 

0.73 

'   56 

57 

57.00 

0.25 

1  57.00 

0..50 

57.00 

0.75 

57 

58 

58.00 

0.25 

I  68.00 

0.51 

67.99 

0.76 

58 

o'J 

59.00 

0.26 

i  59.00 

0.51 

58.99 

0.77 

59 

60 

60.00 

0.26 

1  60.00 

0.52 

59.99 

0.79 

60 

6"i 

ei7(7ii 

0.27 

1   61.00 

0..53 

60.99 

0.80 

~t\    ! 

(i-^ 

62.00 

0.27 

62.00 

0.54 

61.99 

0.81 

62  i 

0:> 

63.00 

0.27 

1  63.00 

0.55 

62.99 

0.82 

63 

(il 

64.00 

0.28 

[  64.00 

0.56 

1  63.99 

0.84 

64 

r,5 

65.00 

0.28 

65.00 

o..5r 

i  64.99 

0.85 

65 

6G 

6.'>.00 

0.29 

'  66.00 

0.58 

1  65.99 

0.86 

66 

67 

67.00 

0.29 

67.00 

0.68 

!  66.99 

0.88 

67 

PS 

68.00 

0.30 

68.00 

0.59 

i  67.99 

0.89 

68 

no 

69.00 

0.30 

69.00 

0.60 

1  6^.99 

0.90 

69 

70 

70.00 

0.31 

70.00 

0.61 

1  69.99 

0.92 

70 

7T 

71.00 

0.31 

71.00 

0.62 

70.99 

0.93 

71  j 

72 

72.00 

0.31 

72.00 

0.63 

71.99 

0.94 

72 

7:{ 

73.00 

0.32  . 

73.00 

0.64 

-2.99 

0.96 

73 

74 

74.00 

0.32 

74.00 

0.65 

73.99 

0.97 

74 

7  5 

75.00 

0.33 

75.00 

0 .  65 

74.99 

0.98 

75 

76 

76 .  00 

0.33 

76.00 

0.66 

75.99 

0.99 

76 

77 

77.00 

0..34 

77.00 

0.67 

1  76.99 

1.01 

77 

78 

78.00 

0.34 

78.00 

0.68 

77.99 

1.02 

78 

79 

79.00 

0.34 

79.00 

0.69 

78.99 

1.03 

79 

.SO 

80.00 

0.35 

80.00 

0.70 

79.99 

1.05 

80 

81 

81.00 

0.35 

81.00 

0.71 

80.99 

1.06 

81 

82 

82.00 

0.36 

82.00 

0.72 

81.99 

1.07 

82 

h3 

83.00 

0.36 

83.00 

0.72 

82.99 

1.09 

83 

84 

vS4.00 

0.37 

8-1.00 

0.73 

83.99 

1. 10 

84 

85 

85.00 

0.37 

85.00 

0.74 

84.99 

1.11 

85 

86 

86.00 

0.38 

86.00 

0.75 

85.99 

1.13 

86 

87 

87.00 

0.38 

87.00 

0.76 

86.99 

1.14 

87 

88 

88.00 

0..38 

88.00 

0.77 

87.99 

1.15 

88 

89 

89.00 

0.39 

89.00 

0.78 

88.99 

1.16 

89 

90 

90.00 

0.39 

90.00 

0.79 

89.99 

1.18 

90 

'91 

'91.00 

0.40 

91.00 

0.79 

90.99 

1.19 

91 

92 

92.00 

0.40 

92.00 

0.80 

91.99 

1.20 

92 

93 

93.00 

0.41 

93.00 

0.81 

92.99 

1.22 

93 

94 

94.00 

0.41 

94.00 

0.82 

93.99 

1.23 

94 

95 

95.00 

0.41 

95.00  1 

0.83 

94.99 

1.24  1 

95 

96 

96.00 

0.42 

96.00 

0.84 

95.99  1 

1.26 

96 

97 

97.00 

0.42 

97.00  ! 

0.85 

96.99 

1.27 

97 

98 

98.00 

0.43 

98.00  1 

0.86 

97.99 

1.28 

98 

99 

99.00 

0.43 

99.00  1 

0.86 

98.99 

1.30 

99 

100 

100.00 

0.44 

100.00  ; 

0.87 

99.99  j 

1.31 

100 

6 
c 

Dep. 

Lat. 

Dep.  1 

Lat. 

Dep.  1 
89U 

Lat. 
)eg. 

5 

8P,  1 

89^1 

)eg. 

1 

TRAVFRSE    TABLE. 


D 
55' 

3 
O 

- 

1  Dog. 

UD^g. 

1 2  Deg. 

U  Deg. 

C 
55' 

3 
O 
p 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

1.00 

0.02 

1.00 

0.02 

1.00 

0.03 

1.00 

0.03 

2 

2.00 

0.03 

2.00 

0.04 

2.00 

0.05 

2.00 

0.06 

o 

3 

3.00 

0.05 

3.00 

0.07  1    3.00 

0.08 

3.00 

0.09 

3 

4 

4.00 

0.07 

4.00 

0.09 

4.00 

0.10 

4.00 

0.12 

4 

6 

5.00 

0.09 

5.00 

0.11 

5.00 

0.13 

5.00 

0.15 

5 

6 

6.00 

0.10 

6.00 

0.13 

6.00 

0.16 

6.00 

0.18 

6 

7 

7.00 

0.12 

7.00 

0.15 

7.00 

0.18 

7.00 

0.21 

7 

8 

8.00 

0.14 

8.00 

0.17 

8.00 

0.21 

8.00 

0.25 

8 

9 

9.00 

0.16 

9.00 

0.20 

9.00 

0.24 

9.00 

0.28 

9 

10 
11 

10.00 
11.00 

0.17 
0.19 

10.00 

0.22 

10.00 

0.26 
0.28 

10.00 

0.31 

10 

11.00 

0.24 

11.00 

10.99 

0..34 

11 

12 

12.00 

0.21 

12.00 

0.26 

12.00 

0.31 

11.99 

0.37 

12 

13 

13.00 

0.23 

13.00 

0.28 

13.00 

0.34 

12.99 

0.40 

13 

14 

14.00 

0.24 

14.00 

0.31 

14.00 

0.37 

13.99 

0.43 

14 

15 

15.00 

0.26 

15.00 

0.33 

14.99 

0.39 

14.99 

0.46 

i5 

16 

16.00 

0.28 

16.00 

0.35 

15.99 

0.42 

15.99 

0.49 

16 

17 

17.00 

0.30 

17.00 

0.37 

16.99 

0.45 

16.99 

0..52 

17 

18 

18.00 

0.31 

18.00 

0.39 

17.99 

0.47 

17.99 

0..55 

18 

19 

19.00 

0.33 

19.00 

0.41 

18.99 

0..50 

18.99 

0.,58 

19 

20 

20.00 

0.35 

20.00 

0.44 

19.99 

0..52 

19.99 

0.61 

20 

21 

21.0!) 

0.37 

21.00 

0.46 

20.99 

O.fSi 

20.99 

0.64 

21 

22 

22.00 

0.38 

21.99 

0.48 

21.99 

0..58 

21.99 

0.67 

22 

23 

23.00 

0.40 

22.99 

0.50 

22.99 

0.60 

22.99 

0.70 

23 

24 

24.00 

0.42 

23.99 

0..52 

23.99 

0.63 
0.G5J 

23.99 

0.73 

24 

2,'i 

25.00 

0.44 

24.99 

0.55 

24.99 

24.99 

0.76 

25 

26 

20.00 

0.45 

25.99 

0.57 

25.99 

0.68 

25.99 

0.79 

26 

27 

27.00      0.47  1 

26.99 

0  59 

26.99 

0.71 

26.99 

0.83 

27 

28 

2S.00 

0.49 

27.99 

0.61 

27.99 

0.73 

27.99 

0.86 

28 

29 

29.00 

0.51 

28.99 

0.63 

28.99 

0.76 

28.99 

0.89 

29 

30 

30.00 

0.52 

29.99 

0.65 

29.99 

0.79 

29.99 

0.92 

30 

31 

31.00 

0..'i4 

30.99 

0.68 

30.99 

0.81 

30.99 

0.95 

31 

32 

32.00 

0.56 

31.99 

0.70 

31.99 

0.84 

31.99 

0.98 

32 

33 

32.99 

0..58 

32.99 

0.72 

32.99 

0.86 

32.98 

i.Ol      .33 

34 

33.99 

0.59 

33.99 

0.74 

33.99 

0.89 

33.98 

1.04     .34 

35 

34.99 

0.61 

34.99 

0.76 

34.99 

0.92 

34.98 

1.07     35 

36 

35.99 

0.63 

35.99 

0.79 

35.99 

0.94 

35.98 

l.iO     36 

37 

.36.99 

0.65 

36.99 

0.81 

36.99 

0.97 

36.98 

1.13  1   37 

38 

37.99      0.66 

37.99 

0.83 

37.99 

0.99 

! 37.98 

1.16 

38 

39 

38.99 

0.68 

38.99 

0.85 

38.99 

1.02 

38.98 

1.19 

39 

40 

39.99 

0.70 

39.99 

0.87 

39.99 

1.05 

39.98 

1.22 

40 

41 

40.99 

0.72 

40.99 

0.89 

40.99 

1.07 

40.98 

1    25r41 

42 

41.99 

0.73 

41.99 

0.92 

41.99 

I.IO 

41.98 

1    2«  i   42 

43 

42.99 

0.75 

42.99 

0.94 

42.99 

1.13 

42.98 

1.3f      43 

44 

43.99 

0.77 

43.99 

0.96 

43.99 

1.15 

143.98 

1.34     44 

45 

44.99 

0.79 

44.99 

0.98 

44.99 

1.18 

44.98 

1.37     45 

46 

45.99  1    0.80 

45.99 

1.00 

45.99 

1.20 

45.98 

1.40     46 

47 

46.99 

0.W2 

46.99 

1.03 

46.99 

1.23 

46.98 

1.44     47 

48 

47.99 

0.84 

47.99 

1.05 

47.98 

1.26 

47.98 

1.47  1  49 

49 

48.99 

0.88 

48.99 

1.07 

48.98 

1.28 

48.98 

1..50 

49 

50 

49.99 

0.87 

49.99 

1.09 

49.98 

1.31 

49.98 

1..53 

50 

c 
Q 

T 

5 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

LaU 

Dep. 

Lai. 

09  Deg. 

881  Deg. 

88J 

Deg. 

m 

Deg. 

TRAVEBSE    TABLE. 


o 

E 
^ 

iDeg. 

U  Deg. 

H 

Deg. 

U  l^<3g. 

c 

nr. 

o 
9 
51 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

50.99 

0.89 

50.99 

1.11 

50.98 

1.34 

.50.98 

1.56 

~51 

52 

51.99 

0.91 

51.99 

1.13 

51.98 

1.36 

51.98 

1.59 

52 

53 

52.99 

0.92 

52.99 

1.16 

52.98 

1.39 

52.98 

1.62 

53 

54 

53  99 

0.94 

53.99 

1.18 

53.98 

1.41 

53.97 

1.65 

54 

55 

54  99 

0.96 

54.99 

1.20 

54.98 

1.44 

54.97 

1.68 

55 

56 

55.99 

0.98 

55.99 

1.22 

55.98 

1.47 

55.97 

1.71 

56 

57 

50.99 

0.99 

56.99 

1.24 

.56.98 

1.49 

56.97 

1.74 

57 

58 

57.99 

1. 01 

57.99 

1.27 

.57.98 

l.,52 

57.97 

1.77 

58 

59 

58.99 

1.03 

.58.99 

1.29 

58.98 

1.54 

58.97 

1.80 

59 

60 
61 

59.99 

1.05 

59.99 

1.31 

59.98 
60.98 

1..57 
1.60 

.59.97 

1.83 

60 

60.99 

1.06 

60.99 

1.33 

60.97 

1.86 

61 

62 

61.99 

1.08 

61.99 

1..35 

61.98 

1.G2 

61.97 

1.89 

62 

63 

62.99 

1.10 

62.99 

1.37 

62.98 

1.65 

62.97 

1.92 

63 

64 

63.99 

1.12 

63.98 

1.40 

63.98 

1.68 

63.97 

1.95 

64 

65 

64.99 

1.13 

64.98 

1.42 

64.98 

1.70 

64.97 

1.99 

65 

66 

65.99 

1.15 

65.98 

1.44 

85.98 

1.73 

65.97 

2.02 

66 

67 

66.99 

1.17 

66.98 

1.46 

66.98 

1.75 

66.97 

2.05 

67 

68 

67.99 

1.19 

67.98 

1.48 

67.98 

1.78 

67.97 

2.08 

68 

69 

68.99 

1.20 

68.98 

1.51 

68.98 

1.81 

68.97 

2.11 

69 

70 
71 

69.99 
70.99 

1.22 
1.24 

69.98 

1..53 

69.98 

1.83 
1.86 

69.97 

2.14 

70 

70.98 

1.55 

70.98 

70.97 

2.17 

71 

72 

71.99 

1.26 

71.98 

1.57 

71.98 

1.88 

71.97 

2.20 

72 

73 

72.99 

1.27 

72.98 

1.59 

72.97 

1.91 

'"2.97 

2.23 

73 

74 

73.99 

1.29 

73.98 

1.61 

73.97 

1.94! 

73.97 

2.26 

74 

75 

74.99 

1.31 

74.98 

1.64 

74.97 

1.96  i 

74.97 

2.29 

75 

76 

75.99 

1..33 

75.98 

1.66 

75.97 

1.99 

75 .  96 

2.32 

76 

77 

76.99 

1.34 

76.98 

1.68 

76.97 

2.02 

76.96 

2.35 

77 

78 

77.99 

1.36 

77.98 

1.70 

77.97 

2.04 

77.96 

2.38 

78 

79 

78.99  1 

1..38 

78.98 

1.72 

78.97 

2.07 

78.96 

2.41 

79 

80 
81 

79.99  i 
80.99  1 

1.40 
1.41 

79.98 
80.98 

1.75 
1.77 

79.97 

2.09 
"  2.12 

79.96 
80.96 

2.44 
2.47 

80 

80.97 

"81 

82  1 8i.r?n  1 

1.43 

81.98 

1.79 

81.97 

2.15 

81.96 

2.. 50 

82 

83 

82.99  ' 

i.45 

82.98 

1.81 

82.97 

2.17 

82.96 

2.. 53 

83 

84 

83.99  , 

1.47 

83.98 

1.83 

83.97 

2.20 

83. 9G 

2.57 

84 

85 

84.99  ' 

1.48 

84.98 

1.85 

84.97 

2.23 

84.96 

2.60 

85 

86 

85.90 

1.50 

85.98 

1.88 

85.97 

2.25 

85.96 

2.63 

86 

87 

86.99 

1.52 

86.98 

1.90 

86.97 

2.28 

86.96 

2.66 

87 

88 

87.99  '■ 

1.54 

87.98 

1.92 

87.97 

2.30 

87.96 

2.69 

88 

89 

88.99  ; 

1..55 

88.98 

1.94 

88.97 

2.33 

88.96 

2.72 

89 

90 

89.99  : 
90.99  1 

1..57 
1.59 

89.98 

1.96 

89.97 

2.36 

89.96 
90.9b 

2.75 
2.78 

90 

91 

'90.98 

i.99 

90.97 

2.38 

91 

92 

91.99  i 

1.61 

91.98 

2.01 

91.97 

2.41 

91.96 

2.81 

92 

93  92.99  ' 

1.62 

92.98 

2.03 

92.97 

2.43 

92.96 

2.84 

93 

94  93.99  1 

1.64 

93.98 

2.05 

93.97 

2.46 

93.96 

2.87 

94 

95. 94. 99 

1.66 

94.98 

2.07 

94.97 

2.49 

94.96 

2.90  95 

96 

95.99 

1.68 

95.98 

2.09 

95.97 

2.51 

95.96 

2.94  j  96 

97 

96.99 

1.69 

96.98 

2.12 

96.97 

2.54 

96.95 

2.96  ,  97 

98 

97.99 

1.71 

97.98 

2.14 

97.97 

2.. 57 

97.95 

2.99 

98 

99 

98.98 

1.73 

98.98 

2.16 

98.97 

2.59 

98.95 

3.02 

99 

100 

o 
§ 

5 

99.98 

1.75 

99.98 

2.18 

99.97 

2.62 

99.95 
Dep. 

3.05 
Lat. 

100 

Dep. 

Lat. 

Dep. 

1 

Lat. 

Dep. 

Lat. 

1 

80  T 

^c^. 

1 
881  Dejr. 

881 

Deg. 

88^  Deg. 

1 

TRAVERSE    TABLE. 


1 

1 

2  Deg. 

2i  Deg. 

H  Deg. 

2|  Deg.   j 

1 

? 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

3 
o 
9 

1.00 

0.03 

1.00 

0.04 

1.00  i 

0.04 

1.00 

0.05 

1 

2 

2.00 

0.07 

2.00 

0.08 

2.00 

0.09 

2.00 

0.10 

2 

2 

3.00 

0.10 

3.00 

0.12 

3.00 

0.13 

3.00 

0.14 

3 

4 

4.00 

0.14 

4.00 

0.16 

4.00 

0.77 

4.00 

0.19 

4 

5 

5.00 

0.17 

5.00 

0.20 

5 .  00 

0.22 

4.99 

0.24 

5 

6 

6.00 

0.21 

6.00 

0.24 

5.99 

0.26 

5.99 

0.29 

6 

7 

7.00 

0.24 

6.99 

0.27 

6.99 

0.31 

6.99 

0.34 

7 

S   7.99 

0.28 

7.99 

0.31 

7.99! 

0.35 

7.99 

0.38 

8 

9   8.99 

0.31 

8.99 

0.35 

8.99  i 

0.39 

8.99 

0.43 

9 

10 

9.99 

0.35 

9.99 

0.39 

9.99 

0.44 

9.99 

0.48 

10 
11 

n 

10.99 

0.38 

10.99 

0.43 

10.99 

0.48 

10.99 

0.53 

12 

11.99 

0.42 

11.99 

0.47  1 

11.99 

0.52 

11.99 

0.58 

12 

13 

12.99 

0.45 

12.99 

0.51  1 

12.99 

0.57 

12.99 

0.62 

13 

14 

13.99 

0.49 

13.99 

0.55 

13.99 

0.61 

13.98 

0.67 

14 

15 

14.99 

0..52 

14.99 

0.59 

14.99 

0.65 

14.98 

0.72 

15 

16  !  15.99 

0..56 

15.99 

0.63 

15.99 

0.70 

15.98 

0.77 

16 

17  1  16.99 

0.59 

16.99 

0.67 

16.98 

0.74 

16.98 

0.82 

17 

18  i  17.99 

0.63 

17.99 

0.71 

17.98 

0.79 

17.98 

0.86 

18 

19  !  18.99 

0.66 

18.99 

0.75 

18.98 

0.83 

18.98 

0.91 

19 

20 

19.99 

0.70 

19.98 

0.79 

19.98 

0.87 

19.98 

0.96 

20 

'21 

20.99 

0.73 

20.98 

0.82 

20.98 

0.92 

20.98 

1.01 

21 

22  121.99 

0.77 

21.98 

0.86 

21.98 

0.96 

21.97 

1.06 

22 

23  i  22 . 99 

0.80 

22.98 

0.90 

22.98 

1.00 

22.97 

1.10 

23 

24!  23.99 

0.84 

23.98 

0.94 

23.98 

1.05 

',23.97 

1.15 

24 

2o  24.98 

0.87 

24.98 

0.98 

24.98 

1.09 

24.97 

1.20 

25 

26  1 25.98 

0.91 

25.98 

1.02 

25.98 

1.13 

1 25.97 

1.25 

26 

27  26.98 

0.94 

26.98 

1.06 

26.97 

1.18 

126.97 

1.30 

27 

28  127.98 

0.98 

27.98 

1.10 

27.97 

1.22 

27.97 

1.34 

28 

29  128.98 

1.01 

28.98 

1.14 

28.97 

1.26 

128.97 

1.39 

29 

30  129.98 

1.05 

29.98 
30.98 

1.18 
1.22 

29.97 

1.31 

1 29.97 

!.44 

30 

31 

31  i 30.98 

1.08 

30.97 

1.35 

130.96 

1.49 

32  31.98 

1.12 

31.98 

1.26 

31.97 

1.40 

31.96 

1..54 

32 

33  I  32.98 

1.15 

32.97 

1.30 

32.97 

1.44 

132.96 

1.58 

33 

34  i 33.98 

1.19 

33.97 

1.33 

33.97 

1.48 

33.96 

1.63 

34 

35  !  34.98 

1.22 

34.97 

1.37 

34.97 

1.53 

34.96 

1.68 

35 

36  1 35.98 

1.26 

35.97 

1.41 

.35.97 

1.57 

35.96 

1.73 

36 

37  136.98 

1.29 

36.97 

1.45 

36.96 

1.61 

.36.96 

1.78 

37 

38  i  37.98 

1.33 

37.97 

1.49 

37.96 

1.66 

37.96 

1.82 

38 

39  138.98 

1.36 

38 .  97 

1.53 

38.96 

1.70 

38.96 

1.87 

39 

40 
41 

39.98 

40.98 

1.40 

■"'r.43 

39.97 

1.57 

39.96 
40.96 

1.75 

1.77 

39.95 

1.92 

40 

'  41 

40.97 

1.61 

40.95 

1.97 

42 

41.97 

1.47 

41.97 

1.65 

41.96 

1.83 

41.95 

2.02 

42 

43 

42.97 

1.50 

42.97 

1.69 

42.96 

1.88 

42.95 

2.06 

43 

44 

43.97 

1..54 

43.97 

1 .  73 

43.96 

1.92 

43.95 

2.11 

44 

45 

44.97 

1.57 

44.97 

1.77 

44.96 

1.96 

44.95 

2.16 

45 

40 

45.97 

1.61 

45.96 

1.81 

45.96 

2.01 

45.95 

2.21 

46 

47  146.97 

!  1.64 

46.96 

1.85 

46 .  96 

2.05 

46.95 

2.25 

47 

48  47.97 

i  1.68 

47.96 

1.88 

47.95 

2.09 

47.95 

2.30 

48 

49 148.97 

1.71 

48.96 

1.92 

48.95 

2.14 

48.94 

2.35 

49 

fiOJ  49.97 

1  1.74 

49.96 

1.^ 

49.95 

2.18 

49.94 

2.40 

50 

u 

c 

i  Dcp. 

1  Lat. 

Dep. 

Lat. 
De^. 

Dep. 

Lat. 

Dep. 

j  I.a.. 

5 

5 

1 

1   C3  Deg 

m 

Deg. 

87i 

Deg. 

TRAVEKSE    TABLE. 


1   2  Deg. 

!  n   Deg. 

^ 

Deg. 

21  Deg. 

a 

8 

1  f.at. 

Dep. 

1.78 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

61 

150.97 

60.93 
151.96 

2.00  150.95 

2.22 

50.94 

2.45 

52 

161.97 

1.81 

2.04  '  51.95 

2.27 

61.94 

2.. 50 

i  52 

53 

152.97 

1.85 

i 52.96 

2.08  J. 52. 95 

2.31 

52.94 

2.. 54 

1  53 

54 

53.97 

1.83 

; 53.96 

2.12  j 53.95 

2.36 

53.94 

2.59 

i  54 

55 

154.97 

1.92 

1 54.96 

2.16  j.54.95 

2.40 

,  54.94 

1 55.94 

2.64 

i  55 

5S 

155.97 

1.95 

'55.96 

2.20  I  55.95 

2.44 

2.69 

i  56 

57 

150.97 

1.99  56.96 

2.24;  56.95 

2.49 

56.93 
\   57.93 

2.73 

i  57 

53 

157.96 

2.02:  57.96 

2.23  i!  57.94 

2.53 

2.73 

i  58 

69 

: 58.98 

2.08 

158.95 

2.32  i 58.94 

2.57 

58.93 

2.83 

.  59 

60 
61 

1 59 . 96 
'  60.96 

2.09 
2.13 

1  59.95 

1  2.36 

1.59.94 
160.94 

2.62 

2.66 

59.93 

2.83 

60 

61 

60,95   2.39 

60.93 

2.93" 

62 

!  61.96 

2.16 

161.95   2.43  1161.94 

2.70 

i6l.93 

e2.97 

62 

63 

:62.9o 

2.20 

62.95   2.47  i  62.94 

2.75 

62.93 

3.02 

63 

64 

63.96 

2.23 

63.95  1  2.51  63.94 

2.79 

63.93 

3.07 

64 

65 

64.96 

2.27 

64.95  1  2.. 55;  64.94 

2.84 

64.93 

3.12 

65 

66 

6;k96 

2 .  30 

65.95   2.,59  1,65.94 

2.88 

65.92 

3.17 

66 

67 

66.96 

2.34 

66.95   2.63  166.94 

2.92 

66.92 

3.21 

67 

6S 

67.95 

2.37, 

87.95   2.67 

67.94 

2.97 

67.92 

3.26 

68 

69 

68.96 

2.41 

68.95   2.71 

68.93 

3.01 

68.92 

3.31 

69 

70 

69.96 

2.44 

69.95;  2.75 

69.93 

3.05 

69.92 

3.36 

70 

71 

70.96 

2.48  i 

70.95  1  2.79 

70.93 

3.10 

70.92 

3'.  41 

71 

72 

71.96 

2.51 

71.94  1  2.83 

71.93 

3.14 

71.92 

3.45 

72 

73 

72.96 

2. .55  1 

72.94 i  2.87 

72.93 

3.18 

72.  r  2 

3.. 50 

73 

74 

73.95 

2.. 53 

73.94  1  2.91 

73.93 

3.23 

73.91 

3.. 55 

74 

75 

74.95 

2.62 

74.941  2.94 

74.93 

3.27 

74.91 

3.60 

75 

76  '  75.9o 

2.65 

75.94   2.98 

75.93 

3.31 

1 75.91 

3.65 

76 

77 

76.95 

2.69! 

76.94 

3.02 

76.93 

3.36 

176.91 

3.70 

77 

78 

77.95 

2.72  i  77.94 

3.06 

77.93 

3.40 

77. 9J 

3.74 

78 

79 

78.95 

2.76  1  73.94 

3.10 

78.92 

3.45 

78.91 

3.79 

79 

80 
81 

79.95 

2.79 

79.94 

3.14 

79.92 
80.92 

3.49  1 
3.53 

79.91 

3.84 

80 
81 

80.95 

2.83  1 

80.94 

3.18 

80.91 

3.89 

82 

81.95 

2.86 

81,94 

3.22 

81.92 

3.58 

81.91 

3.93 

82 

83 

82.95 

2.90 

82.94 

3.26 

82.92 

3.62 

82.90 

3.98 

83 

84 

83.95 

2.93 

83.94 

3.30 

83.92 

3.66 

83.90 

4.03 

84 

85 

84.95 

2.97 

84.93 

3.34 

84.92 

3.71  1 

84.90 

4.08 

85 

86 

85 .  95 

3.00 

85.93 

3,. 38 

85.92 

3.751 

85.90 

4.13 

86 

87 

86.95! 

3.04 

86.93 

3.42 

86.92 

3.79 

86.90 

4.17 

87 

88 

87.95 

3.07 

87.93 

3.45 

87.92 

3.84 

87.90 

4.22 

88 

89 

88 .  95 

3.11 

88.93 

3.49 

88.92 

3.88 

88.90 

4.27 

89 

90 
91 

89 .  95 

3.14! 

89.93 

3.53 

89.91 

3.93  1 

89.90 

4.32 

90 
91 

90.95 

3.18| 

90.93 

3.-57 

90.91 

3.97 

90.90 

4.37 

92 

91.94 

3.21 

91.93 

3.61 

91.91 

4.01 

91.89 

4.41 

92 

93 

92.94 

3.25 

92.93 

3.65 

92.91 

4.06 

92.89 

4.46 

93 

94 

93.94 

3.28 

93.93 

3.69 

93.91 

4.10 

93.89 

4.51 

94 

95 

94.94 

3.32 

94 .  93 

3.73 

94.91 

4.14 

94.89 

4.56 

95 

96 

95.94 

3.35 

95.93 

3.77 

95.91 

4.19 

95.89 

4.61 

96 

97 

96.94 

3.39 

96.93 

3.81 

96.91 

4.23 

96.89 

4.85 

97 

98 

97.94 

3.42 

97.92 

3.85 

97.91 

4.27 

97.89 

4.70 

98 

99 

93.94 

3.46 

98.92 

3.89 

98.91 

4.32 

98.89 

4.75  i 

99 

100 

d 
o 

a 

Q 

99.94 

3.49 

99.92 

3.93 

99.91 

4.36 

99.88 

4.80 

100 

a 
0 

C 

Q 

Dep. 
88  E 

Lac. 

)eg. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

L^t. 

871  Deg. 

8711 

3eg. 

87^ 

1 
)eg. 

1 

TRAVERSE    TABLE. 


1" 

SDeg. 

3i  Deg. 

n  ^og- 

3f  Deg. 

3 
o 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

1.00 

0.05 

1. 00 

0.06 

"TTob" 

0.06 

1.00 

0.06 

~1 

2 

2.00 

0.10 

2.00 

0.11 

2.00 

0.12 

2.00 

0.13    2 

3 

3.00 

0.16 

3.00 

0.17 

2.99 

0.18 

2.99 

0.20    3 

4 

3.99 

0.21 

3.99 

0.23 

3.99 

0.24 

3.99 

0.26   4 

5 

4.99 

0.36 

4.99 

0.28 

4.99 

0.31 

4.99 

0.33    5 

6 

5.99 

0.31 

5.99 

0.34 

5 .  99 

0.37 

5.99 

0.39 

6 

7 

6.99 

0.37 

6.99 

0.40 

6.99 

0.43 

6.99 

0.46 

7 

8 

7.99 

0.42 

7.99 

0.45 

7.99 

0.49 

7.98 

0.52 

8 

9 

8.99 

0.47 

8.99 

0.51 

8.98 

0..55 

8.98 

0.59 

9 

10 
'  11 

9.99 

0.52 

9.98 

0.57 

9.98 

0.61 

9.98 

0.65 

10 
11 

10.98 

0.58 

10.98 

0.62 

10.98 

0.67 

10.98 

0.72 

12 

11.9^ 
12.9^ 

0.63 

11.98 

0.68 

11.98 

0.73 

11.97 

0.78 

12 

13 

0.68 

12.98 

0.73 

12.98 

0.79 

12.97 

0.85 

13 

14 

13. 9S 

0.73 

13.98 

0.79 

13.97 

0.85 

13.97 

0.92 

14 

15 

14.98 

0.79 

14.98 

0.85 

14.97 

0.92 

14.97 

0.98 

15 

16 

15.98 

0.84 

15.97 

0.91 

15.97 

0.98 

15.97 

1.05 

16 

17 

16.98 

0.89 

16.97 

0.90 

16.97 

1.04 

16.96 

1.11 

17 

18 

17.98 

0.94 

17.97 

1.02 

17.97 

1.10 

17.96 

1.18 

18 

19 

18.98 

0.99 

18.97 

1.08 

18.96 

1.16 

18.90 

1.24 

19 

20 
21 

19.97 

1.05 

19.97 

1.13 

19.96 

1.22 

19.96 

1.31 

20 
21 

20.97 

1.10 

20.97 

1.19 

20.96 

1.28 

20.96 

1.37 

22 

21.97 

1.15 

21.96 

1.25 

21.96 

1.34 

21.95 

1.44 

22 

23 

22.97 

1.20 

22.96 

1.30 

22.96 

1.40 

22.95 

1.5i> 

23 

24 

23.97 

1.26 

23.96 

1.36 

23.96 

1.47 

23.95 

1..57 

24 

25 

24.97 

1.31 

24.96 

1.42 

24.95 

1.53 

24.95 

1.64 

25 

26 

25.96 

1.36 

25.96 

1.47 

25.95 

1..59 

25.94 

1.70 

26 

27 

26.96 

1.41 

26.96 

1.53 

26.95 

1.65 

26.94 

1.77 

27 

28 

27.96 

1.47 

27.95 

1.59 

27.95 

1.71 

27.94 

1.83 

28 

29 

28.96 

1..52 

28.95 

1.64 

28.95 

1.77 

28.94 

1.90 

29 

30 
31 

29.96 

1.57 

29.95 

1.70 

29.94 

1.S3 

29.94 

1.96 
2.03 

30 
31 

30.96 

1.62 

30.95 

1.76 

30.94 

1.89 

30.03 

32 

31.96 

1.67 

31.95 

1.81 

31.94 

1.95 

31.93 

2.09 

32 

33 

32.95 

1.73 

32.95 

1.87 

32.94 

2.01 

32.93 

2.16 

33 

34 

33.95 

1.78 

33.95 

1.93 

33.94 

2.08 

33.93 

2.22 

34 

35 

34.95 

1.83 

34.94 

1.98 

34.93 

2.U 

34.92 

2.29 

35 

36 

35.95 

1.88 

35.94 

2.04 

35.93 

2.20 

35.92 

2.35 

36 

37 

36.95 

1.94 

36.94 

2.10 

38.93 

2.26 

36.92 

2.42 

37 

38 

37.95 

1.99 

37.94 

2.15 

37.93 

2.32 

37.92 

2.49 

38 

39 

38.95 

2.04 

38.94 

2.21 

38.93 

2.38 

38.92 

2.55 

39 

40 
41 

39.95 

2.09 

39.94 

2.27 

39.93 

2.44 

39.91 

2.62 

40 
41 

40.94 

2.15 

40.93 

2.32 

40.92 

2.. 50 

40.91 

2.68 

42 

41.94 

2.20 

41.93 

2.38 

41.92 

2.56 

41.91 

2.75 

42 

43 

42.94 

2.25 

42.93 

2.44 

42.92 

2.63 

42.91 

2.81 

43 

44 

43.94 

2.30 

43.93 

2.49 

43.92 

2.69 

43.91 

2.88 

44 

45 

44.94 

2.36 

44.93 

2.55 

44.92 

2.75 

44.90 

2.94 

45 

46 

45.94 

2.41 

45.93 

2.61 

45.91 

2.81 

45.90 

3.01 

46 

47 

46.94 

2.46 

46.92 

2.66 

46.91 

2.87 

46.90 

3.07 

47 

48 

47.93 

2.51 

47.92 

2.72 

47.91 

2.93 

47.90 

3.14 

48 

49 

48.93 

2.56 

48.92 

2.78 

48.91 

2.99 

48.90 

3.20 

49 

_50 

V 

o 

a 
a 

Q 

49.93 

2.62 

49.92 

2.83 

49.91 

3.05 

49.89 

3.27 

_50 

1 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

87  Deg. 

86i  Deg. 

86^ 

Deg. 

86^  Deg. 

1 

TRAVERSE    TABLE. 


5- 

3  Deg. 

3i  Deg. 

3^  Deg. 

CI  Deg. 

D 

i 

51 

B 
o 
o 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

1 

Dep. 

Lat. 

Dep. 

61 

50.93 

2.67 

50.92 
01.92 

2.89 

;.-".3o 

~W  A 

50.89 

3.34 

52 

51.93 

2.72 

".35 

51.90 

0.17 

51.89 

3.40 

52 

53 

52.93 

2.77 

0x5.91 

3.00 

152.90 

3.24 

52.89 

3.47 

53 

54 

53.93 

2.83 

53.91 

3.06 

153.90 

3.30 

53.88 

3.53 

54 

55 

54.92 

2.88 

54.91 

3.12 

[54.90 

3.36 

54.88 

3.60 

55 

56 

55.92 

2.93 

55.91 

3.17 

i 55.90 

3.42 

55.88 

3.66 

56 

57 

56.92 

2.98 

56.91 

3.23 

1 56.89 

3.48 

56.88 

3  73 

57 

58 

57.92 

3.04 

57.91 

3.29 

L57.89 

3.54 

57.88 

3.79 

58 

59 

58.92 

3.09 

58.91 

3.34 

: 58.89 

3.60 

58.87 

3.86 

59 

60 

59.92 

3.14 

59.90 
60.90 

3.40 
3.46 

; 59.89 

3.66 

59.87 
60.87 

3,92 
3.99 

60 
61 

61 

60.92 

3.19 

60.89 

3.72 

62 

61.92 

3.24 

61.90 

3.51 

i 61.88 

3.79 

61.87 

4.05 

62 

63 

62.91 

3.30 

62.90 

3.57 

1 62.88 

3.85 

62.87 

4.12 

63 

64 

63.91 

3.35 

63.90 

3.63 

1 63. PQ 

3.91 

63.86 

4.19 

64 

65 

64.91 

3.40 

64.90 

3.69 

64.88.  3.97 

64.86 

4.25 

65 

60 

65.91 

3.45 

65.89 

3.74 

65.88 

.  03 

65.86 

4.32 

66 

07 

66.91 

3.51 

66.89 

3.80 

66.88 

4  .^ 

66.86 

4.38 

67 

68 

67.91 

3.56 

67.89 

3.86 

167.87 

4. 15  ,,67.85 

4.45 

68 

69 

68.91 

3.61 

68.89 

3.91 

i 68.87 

4.21 

68.85 

4.51 

69 

70 

71 

69.90 
70.90 

3.06 

69.89 

3.97 

169.87 

4.27 

69.85 

4.58 

70 

71 

3.72 

70.89 

4.03 

1 70.87.  4.33 

70.85 

4.64 

72 

71.90 

3.77 

71.88 

4.08 

71.87   4.40 

71.85 

4.71 

72 

73 

72.90 

3.82 

72.88 

4.14 

172.86 

4.46 

72.84 

4.77 

73 

74 

73.90 

3.87, 
3.93 

73.88 

4.20 

73.86 

4.52 

73.84 

4.84 

74 

75 

74.90 

74.88 

4.25 

74.86 

4.58 

74.84 

4.91 

75 

76 

75.90 

3.98 

75.88 

4.31 

75  86 

4.64 

75.84 

4.97 

76 

77 

76.89 

4.03 

76.88 

4.37 

76.86 

4.70 

76.84 

5.04 

77 

78 

77.89 

4.08 

77.87 

4.42 

77.85 

4.76 

77.83 

5.10 

78 

79 

78.89 

4.13 

78.87 

4.48 

78.85 

4.82 

i 78.83 

5.17 

79 

80 
81 

79.89 
80.89 

4.19 
4.24 

79.87 

4.54 

79.85 

4.88 

179.83 

5.23 

80 
81 

80.87 

4.59 

80.85 

4.94 

80.83 

5.30 

82 

81.89 

4.29 

81.87 

4.65 

81.85 

5.01 

^81.82 

5.36 

82 

83 

82.89 

4.34 

82.87 

4.71 

82.85 

5.07 

i 82.82 

5.43 

83 

84 

83.88 

4.40 

83.86 

4.76 

83.84 

5.13 

83.82 

5.49 

84 

85 

84.88 

4.45 

84.86 

4.82 

84.84 

5.19 

84.82 

5.56 

85 

86 

85.88 

4.. 50 

85.86 

4.88 

85.84 

5.25 

85.82 

5.62 

86 

87 

86.88 

4.55 

86.86 

4.93 

86.84 

5.31 

86.81 

6.69 

87 

88 

87.88 

4.61 

87.86 

4.99 

87.84 

5.37 

1 87.81 

5.76 

88 

89 

88.88 

4.66 

88.86 

5.05 

88.83 

5.43 

188.81 

5.82 

89 

90 
91 

89.88 

4.71 

89.86 

5.10 
5.16 

89.83 
90.83 

5.49 

j 89.81 

5.89 

90 
91 

90.88 

4.76 

90.85 

5.56 

[90.81 

5.95 

92 

91.87 

4.81 

91.85 

5.22 

91.83 

5.62 

91.80 

6.02 

92 

93 

92.87 

4.87 

92.85 

5.27 

92.83 

5.68 

92.80 

6.08 

93 

94 

93.87 

4.92 

93.85 

5.33 

93.82 

5.74 

93.80 

6.15 

94 

95 

94.87 

4.97 

94.85 

5.39 

94.82 

5.80 

94.80 

6.21 

95 

96 

95.87 

5.02 

95.85 

5.44 

95.82 

5.86 

95.79 

6.28 

96 

97 

96.87 

5.08 

96.84 

5.50 

96.82 

5.92 

96.79 

6.34 

97 

98 

97.87 

5.13 

97.84 

5,^.& 

97.82 

5.98 

97.79 

6.41 

98 

99 

98.86 

5.18 

98.84 

5.61 

98.82 

6.04 

98.79 

6.47 

99 

100 

o 

c 

p 

99.86 
Dep. 

5.23 

99.84 

5.67 

99.81 

6.10 

99.79 

6.54 

100 

1 
5 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

87  E 

>eg. 

861  Deg. 

1 
80^  Deg. 

86i  Deg. 

iO 


TRAVERSE    TABLE. 


1 

4Deg. 

4i  Deg. 

^  Deg. 

4|  Deg. 

0 

■~ 

Lat. 

1.00 

Dep. 
0.07 

Lat. 

Dep.  1 

Lat. 

Dep. 

Lat. 

Dep. 

3 
0 
a 

~1. 

1.00 

0.07 

1.00 

0.08 

1.00 

0.08 

2   2.001 

0.14 

1.99 

0.15 

1.99 

0.16 

1.99 

0.17 

2 

3^  2.99 

0.21 

2.99 

0.22 

2.99 

0.24 

2.99 

0.25 

3 

4;  3.99 

0.28 

3.99 

0.30  1 

3.99 

0.3] 

3.98 

0.33 

4 

5   4.99 

0.35 

4.99 

0.37 

4.98 

0.39 

4.98 

0.41 

5 

6   5.99, 

0.42 

5.98 

0.44 

5.98 

0.47 

5.98 

0..50 

6 

7  1 

6.98 

0.49 

6.98 

0.52 

6.98 

0..55 

6.97 

0.58 

7 

8 

7.98 

0.56 

7.98 

0..59 

7.98 

0.63 

7.97 

0.66 

8 

9: 

8.98! 

0.63 

8.98 

0.67 

8.97 

0.7J 

8.97 

0.75 

9 

10 

"11 

9.98  1 

0.70 

9.97 

0.74 

9.97 

0.78 
0.86 

9.97 

0.83 

10 
11 

10.97' 

"0.77 

10.97 

0.82 

10.97 

10.96 

0.91 

12 

11.97! 

0.84 

11.97 

0.89 

11.96 

0.94 

11.96 

0.99 

12 

13 

12.97 

0.91  j 

12.96 

0.96 

12.96 

1.02 

12.96 

1.08 

13 

14 

13.97, 

0.98  1 

13.96 

1.G4 

13.96 

1.10 

13.95 

l.lB 

14 

15 

14.961 

1.05 

14.96 

1.11 

14.95 

1.18 

14.95 

1.24 

15 

16 

15.96 

1.12 

15.96 

1.19 

15.95 

1.26 

15.95 

1.32 

16 

17 

16.96 

1.19 

16.95 

1.26 

16.95 

1.33 

16.94 

1.41 

17 

18 

17.96 

1.26 

17.95 

1.33 

17.94 

1.41 

17.94 

1.49 

18 

19 

18.95 

1..33 

18.95 

1.40 

18.94 

1.49 

18.93 

1.57 

19 

20 
21 

19.95 

1.40  i 

19.95 

1.48 

19.94 
20.94 

1.57 
1.65 

19.93 

1 .  66 

20 
"21 

20.95 

1.46 

20.94 

1.56 

20.93 

1.74 

22 

21.95 

1.53  1 

21.94 

1.63 

21.93 

1.73 

21.92 

1.82 

22 

23 

22.94 

1.60 

22.94 

1.70 

22.93 

1.80 

22.92 

1.90 

23 

24 

23.94 

1.67' 

23.93 

1.78 

23.93 

1.88 

23.92 

1.99 

24 

25 

24.94 

1.74 

24.93 

1.85 

24.92 

1.96 

24.91 

2.07 

25 

26 

25.94 

1.81 

25.93 

1.93 

25.92 

2.04 

25.91 

2.15 

26 

27 

26.93 

1.88 

26.93 

2.00 

26.92 

2.12 

26.91 

2.24 

27 

28 

27.93 

1.95 

27.92 

2.08 

27.91 

2.20 

27.90 

2.32 

2S 

29 

28.93 

2.02 

28.92 

2.15 

28.91 

2.28 

28.90 

2.40 

29 

30 
31 

29.93 

2.09 

29.92 

2.22 

29.91 

2.35 

29.90 

2.48 

31 

30.92 

2.16 

30.91 

2.30 

30.90 

2.43 

30.89 

2.57 

32 

31.92 

2.23 

31.91 

2.37 

31.90 

2.51 

31.89 

2.65 

32 

33 

32.92 

2.  SO 

32.91 

2.45 

32.90 

2.59 

32.89 

2.73 

33 

34 

33.92 

2.37 

33.91 

2.52 

33.90 

2.67 

33.88 

2.82 

34 

35 

34.91 

2.44 

34.90 

2.59 

34.89 

2.75 

34.88 

2.90 

35 

36 

35.91 

2.51 

35.90 

2.67 

35.89 

2.82 

35.88 

2.98 

36 

3.7 

36.91 

2.58 

36.90 

2.74 

.36.89 

2.90 

36.87 

3.06 

37 

38 

37.91 

2.65 

37.90 

2.82 

37.88 

2.98 

.37.87 

3.15 

38 

39 

38.90 

2.72 

38.89 

2.89 

.38.88 

3.06 

38.87 

3.23 

39 

40 
41 

39.90 

2.79 

39.89 

2.96 

39.88 

3.14 

39.86 

3.31 

40 

41 

40.90 

1  2.86 

40.89 

3.04 

40.87 

3.22 

40.86 

3.40 

42 

41.90 

i  2.93 

41.88 

3.11 

41.87 

3.30 

41.86 

3.48 

42 

43 

42.90 

!  3.00 

42.88 

3.19 

42.87 

3.37 

42.85 

3.56 

43 

44 

43.89 

i  3.07 

43.88 

3.26 

43.86 

3.45 

43.85 

3.64 

44 

45 

44.89 

1  3.14 

44.88 

3.33 

44.86 

3.63 

44.85 

3.73 

45 

46 

45.89 

i  3.21 

45.87 

3.41 

45.86 

3.61 

45.84 

3.81 

46 

47 

46.89 

3.28 

46.87 

3.48 

46.86 

3.69 

46.84 

3.89 

47 

48 

47.88 

3.35 

47.87 

3.. 56 

47.8.') 

3.77 

47.84 

3.97 

48 

49 

48.88 

3.42 

48.87 

3.63 

48.85 

3.84 

48.83 

4.06 

49 

_60 

g 

1 

"to 

49.88 

1  3.49 

49.86 

3.71 

_49_.85 

3.92 

49.83 

4.14 

50 

Dep. 

1  Lat. 

Dep. 

1 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

1 

Q 

86 

Deg. 

85|  Deg. 

85-» 

Deg. 

m  Deg. 

TltA VERSE    TABLE. 


11 


o 

3 
? 

51 

4  Deg. 

4k  Deg. 

4^  Deg. 

4|  Deg. 

3 
? 

51 

Lat. 

Dep.  j 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

50.88 

3.56 

50.86 

3.78 

"50."84r 

4.00 

50.82 

4.22 

52 

51.87 

3.63 

51.86 

3.85 

51.84 

4.08 

51.82 

4.31 

52 

53 

52.87 

3.70 

52.85 

3.93 

52.84 

4.16 

52.82 

4.39 

53 

54 

53.87 

3.77 

.53.85 

4.00 

53.83 

4.24 

53.81 

4.47 

54 

55 

54.87 

3.84 

54.85 

4.08 

54.83 

4.32 

54.81 

4-55 

55 

56 

55.86 

3.91 

55.85 

4.15 

55.83 

4.39 

55.81 

4.64 

56 

57 

56.86 

3.98 

56.84 

4.22 

56.82 

4.47 

56.80 

4.72 

57 

58 

57.86!  4.05 

57.84 

4.30 

57.82 

4.55 

57.80 

4.80 

58 

59 

58.86  1  4.12 

58.84 

4.37 

58.82 

4.63 

58.80 

4.89 

59 

60 
"61 

59.85  1  4.19 

59.84 

4.45 

59.82 

4.71 

59.79 

4.97 
5.05 

60 
61 

60.85   4.26 

60.83 

4.52 

60.81 

4.79 

60.79 

02 

61.85   4.32 

61.83 

4.59 

61.81 

4.86 

61.70 

5.13 

62 

63 

62.85!  4.39 

H2.83 

4.67 

62.81 

4.94 

62.78 

5.22 

63 

64 

63.84!  4.46 

63.82 

4.74 

63.80 

5.02 

63 .  78 

5.. 30 

64 

65 

64.84  1  4.53 

64.82 

4.82 

64.80 

5.10 

04.78 

5.38 

65 

66 

65.84  1  4.60 

65.82 

4.89 

65.80 

5.18 

65.77 

5.47 

66 

67 

6f>.84'  4.67 

66.82 

4.97 

66.79 

5.26 

66.77 

5.. 55 

67 

68 

67.83!  4.74 

67.81 

5.04 

67.79 

5.34 

67.77 

5.63 

68 

6y 

68.83 j  4.81 

68.81 

5.11 

68.79 

5 . 4 1 

68.76 

5.71 

69 

70 
71 

69.83;  4.88 

69.81 

5.19 

69.78 

5.49 
5.. 57 

69.76 
70 .  76' 

5.80 

70 

71 

70.83  1  4.95 

70.80 

5.26 

70.78 

5.88 

72 

71.82  1  5.02 

71.80 

5.34 

71.78 

5.65 

71.75 

5.96 

72 

73 

72.82  !  5.09 

72.80 

5.41 

72.77 

5.73 

72 .  75 

6.04 

73 

74 

73.82 

5.16 

73.80 

5.48 

73.77 

5.81 

73.75 

6.13 

74 

75 

74.82 

5.23 

74.79 

5.56 

74.77 

5.88 

74.74 

6.21 

75 

76 

75.81 

5.30 

75  79 

5.63 

75.77 

5.96 

75.74 

6.29 

76 

77 

76.81 

5.37 

76.79 

5.71 

76.76 

6.04 

76.74 

6.38 

77 

78 

77.81  I  5.44 

177.79 

5.78 

77.76 

6.12 

77.73 

6.46 

78 

79 

78.81 

5.51 

78.78 

5.85 

78.76 

6.20 

78.73 

6.. 54 

79 

80 
81 

79.81 

5.58 

79.78 

5.93 

79.75 

80.75 

6.28 
6.36 

79 .  73 

6.62 

80 
81 

80.80 

5.65 

80.78 

6.00 

80.72 

6.71 

82 

81.80 

5.72 

181.78 

6.08 

81.75 

6.43 

81.72 

6.79 

82 

83 

82.80 

5.79 

82.77 

6.15 

82.74 

6.51 

82.71 

6.87 

83 

84 

83.80 

5.86 

83.77 

6.23 

83.74 

6.59 

83.71 

6.96 

84 

85 

84.79 

5.93 

84.77 

6.30 

84.74 

6.67 

84.71 

7.04 

85 

86 

85.79 

6.00 

85.76 

6.37 

85.73 

6.75 

85.70 

7.12 

85 

87 

86 .  79 

6.07 

86.76 

6.45 

86.73 

6.83 

96.70 

7.20 

87 

88 

87.79 

6.14 

87.76 

6.. 52 

87.73 

6.90 

87.70 

7.29 

8S 

89 

88.78  1  6.21 

88.78 

6.60 

88.73 

6.98 

88 .  70 

7.37 

89 

90 
91 

89. 7S 

6.28 

89.75 

6.67 
6.74 

89.72 

7.06 

89.69 
90.69 

7.45 
7.54 

90 
91 

90.78 

6.35 

90.75 

90.72 

7.14 

92 

91.78 

6.42 

91.75 

6.82 

91.72 

7.22 

91.68 

7.62 

92 

93 

92.77 

6.49 

92.74  1  6.89 

92.71 

7.30 

92.68 

7.70 

93 

94 

93.77 

6.56 

93.74 

6.97 

93.71 

7.38 

93.68 

7.78 

94 

95 

94.77 

6.63 

94.74 

7.04 

94.71 

7.45 

94.67 

7.87 

95 

96 

95.77 

6.70 

95.74 

7.11 

95.70 

7.53 

195.67 

7.95 

96 

97 

96.76 

6.77 

96.73 

7.19 

96.70 

7.61 

96.67 

8.03 

97 

98 

97.76 

6.84 

97.73 

7.26 

97.70 

7.69 

197.66 

8.12 

98 

99 

98.76 

6.91 

98.73 

7.34 

98.69 

7.77 

198.66 

8.20 

99 

100 

6 
o 

c 

Q 

99.76 

6.98 

99.73 

7.41 

99.69 

7.85 

199.66 

8.28 

100 

6 

o 

B 
5 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 
851 

Lat. 

Dep. 

Lat. 

86  Deg. 

1 

Dejr. 

Deg. 

85.1  Deg. 

12 


TRAVKRSE    TABLE. 


D 

09 

3 
o 

3  Deg. 

5k  Deg. 

5-i-  Deg. 

5.1  Deg. 

1 
9 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

1 

Lat. 

Dep. 

T 

1.00 

0.09 

1.00 

0.09 

1.00 

0.10 

0.99 

0.10 

1 

2 

1.99 

0.17 

1.99 

0.18 

1.99 

0.19 

1.99 

0.20 

2 

3 

2.99 

0.26 

2.99 

0.27 

2.99 

0.29 

2.98 

0.30 

3 

4 

3.98 

0.35 

3.98 

0.37 

3.98 

0.38 

3.98 

0.40 

4 

5 

4.98 

0.44 

4.98 

0.46 

4 .  98 

0.48 

4.97 

0.50 

5 

6 

5.98 

0.52 

5.97 

0.55 

5 .  97 

0.58 

5.97 

0.60 

6 

7 

6.97 

0.61 

6 .  97 

0.64 

6.97 

0.67 

6.96 

0.70 

7 

8 

7.97 

0.70  1  7.97 

0.73 

7.96 

0.76 

7.96 

0.80 

8 

9 

8.97 

0.78   8.96 

0.82 

8  96 

0.86 

8.95 

0.90 

i>' 

10 

9.96 

0.87:  9.96 

0.92 

9 .  95 

0.96 

9.95 

1.00 

10: 

11 

10.  9G" 

0.96  !  10.95 

"■  1. 01 

10.95 

1.05 

10.94 

1. 10 

11  i 

12 

11.95 

1.05 

1 1 .  95 

1.10 

11.94 

1.15  1 

11.94 

1.20 

12  1 

13 

12.95 

1.13 

12.95 

1.19 

12.94 

1.25 

12.93 

1.30 

13 

14 

13.95 

1.22 

13.94 

1.28 

13.94 

1.34  1 

13.93 

1.40 

14  i 

15 

14.91 

1.31 

14.94 

1.37 

14.93 

1.44 

14.92 

1.50 

1^ 
16? 

16  15.94 

1.39 

15.93 

1.46 

15.93 

1.53 

15.92 

1.60 

17 

16.94 

1.48 

16.93 

1.56 

16.92 

1.63 

16.91 

1.70 

17 

18 

17.93 

1.5?  i 

17.92 

1.65 

17.92 

1.73 

17.91 

1.80 

18 

i9 

18.93 

1.66; 

18.92 

1.74 

18.91 

1.82  1 

18.90 

1.90 

19 

20 
21 

19.92 

20.92' 

1.74 

1.83 

19.92 

1.83 

19.91 

1.92 

19.90 

2.00 

20 

21 

20.91 

1.92 

20.90 

■  2.01  1 

20.89 

2.10 

22 

21.92 

1.92 

21.91 

2.01 

21.90 

2.11 

21.89 

2.20 

22 

23 

22.91 

2.00  1  22.90 

2.10 

22.89 

2.20 

22.88 

2.30 

23 

24 

23.91 

2.09  1,23.90 

2.20 

23.89 

2.30 

23.88 

2.40 

24 

25 

24.90 

2.18 

24.90 

2.29 

24.88 

2.40  1 

24.87 

2.50 

25 

2() 

25.90 

2.27 

25.89 

2.38 

25.88 

2.49  i 

25.87 

2.60 

26 
27 

28 

27 

26.90 

2.35 

26.89 

2.47 

26.88 

2.59 

26.86 

2.71 

2S 

27.89 

2.44 

27.88 

2.56 

27.87 

2.88 

27.86 

2.81 

29 

28.89 

2.53 

28.88   2.65 

28.87 

2.78 

28.85 

2.91 

29 

30 
3i 

29.89 

2.61 

29.87   2.75 

29.86 

2.88 

29.85 

3.01 

-§ 

30.88 

2.70 

30.87 

2.84 

30.86 

2.97 

.30.84 

3.11 

32 

31. 8S 

2.79 

31.87 

2.93 

31.85 

3.07 

31.84 

3.21 

32 

33 

32.87 

2.88 

32.86 

3.02 

32.85 

3.16 

32.83 

3.31 

33 

34 

33.87 

2.96 

33.86 

3.11 

33.84 

3.26 

33.83 

3.41 

34 

35 

34.87 

3.05 

34.85 

3.20 

34.84 

3.35 

34.82 

3.51 

35 

36 

35.86 

3.14 

35.85 

3.29 

35.83 

3.45 

35.82 

3.61 

36 

37 

36.86 

3.22 

36.84 

3.39 

36.83 

3.55 

36.81 

3.71 

37 

38 

37.86 

3.31 

37.84 

3.48 

37.83 

3.64 

37.81 

3.81 

38 

39 

38.85 

3.40 

38.84 

3.57 

38.82 

3.74 

38.80 

3.91 

39 

40 

4i 

39.85 
40.84 

3.57 

39.83 

3.66 

39.82 

3.83 

39.80 

4.01 

40 
41 

40.83 

3.75 

40.81 

3.93 

40.79 

4.11 

42 

41.84 

3.66 

41.82 

3.84 

41.81 

4.03 

41.79 

4.21 

42 

43 

42.84 

3.75 

42.82 

3.93 

42.80 

4.12 

42.78 

4.:^! 

43 

44 

43.83 

3.83 

43.82 

4.03 

43.80 

4.22 

43.78 

4.41 

44 

45 

44.83 

3.92 

44.81 

4.12 

44.79 

4!31 

44.77 

4.51 

45 

46 

45.82 

4.01 

45.81 

4.21 

45.79 

4.41 

45.77 

4.61 

40 

47 

46.82 

4.10 

46.80 

4.30 

46.78 

4.50 

46.76 

4.71 

47 

48 

47.82 

4.18 

47.80 

4.39 

47.78 

4.60 

47.76 

4.81 

48 

49 

48.81 

4.27 

48,79 

4.48 

48.77 

4.70 

48.75 

4.91 

49 

50 

49.81 

4.36 

49.79 

4.58 

49.77 

4.79 

49.75 

5.01 

50 

.2 

Q 

Dep, 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

6 

o 

c 

.2 

85 

Deg. 

84|  Deg. 

841  Deg. 

84i 

Deg. 

TKAVEliSK    TABL:-. 


o 

p 
n 

9 

IT 

5Deg. 

5i  Deg. 

H  l^eg. 

■^i 

Deg. 

1 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

..i 

50.81 

4.44 

50.79 

4.67 

50.77 

4.89 

50.74 

5.11 

51 

52 

51.80 

4.53 

51.78 

4.76 

51.76 

4.98 

51.74 

6.21  !  62  1 

53 

52.80 

4.62 

52.78 

4.85 

52.76 

5.08 

52.73 

6.31  '  5Ci 

54 

53.79 

4.71 

53.77 

4.94 

53.75 

5.18 

53.73 

6.41 

54 

55 

rvl.79 

4.79 

54.77 

5.03 

54.75 

6.27 

54.72 

5.51 

65 

66 

55.79 

4.88 

55.77 

6.12 

.56.74 

5.37 

55.72 

6.61 

66 

57 

56.78 

4.97 

56.76 

5.22 

56.74 

5.46 

66.71 

5.71 

57 

58 

57.78 

5.06 

57.76 

6.31 

57.73 

5.56 

67.71 

5. 81 

58 

59 

58.78 

5.14 

.58.75 

5.40 

58.73 

5.66 

68.70 

6.91 

59 

60 
61 

59.77 

5.23 

59.76 
60.74 

6.49 

69.72 

5.75 

59.70 

6.01  ;  601 

60.77 

5.32 

5.68 

60.72 

5.86 

60.69 

6.11  !  6ll 

62 

61.76 

5.40 

61.74 

5.67 

61.71 

6.94 

61.69 

0.21 

62 

63 

62.76 

5.49 

62.74 

6.76 

62.71 

6.04 

62.68 

6.31 

63 

64 

63.76 

5.58 

63.73 

5.86 

63.71 

6.13 

63.68 

6.41 

64 

65 

64.75 

5.67 

64.73 

5.95 

64.70 

6.23 

64.67 

6.61 

65 

66 

65.75 

5.75 

65.72 

6.04 

66.70 

6.33 

66.67 

6.61 

66 

67 

66.75 

5.84 

66.72 

6.13 

66.69 

6.42 

66.66 

6.71 

6? 

68 

67.74 

5.93 

67.71 

6.22 

67.69 

6.62 

67.66 

6.81 

68 

69 

68.74 

6.01 

68.71 

6.31 

68.68 

6.61 

68.65 

6.91 

69 

70 

71 

69.73 

6.10 

69.71 

6.41 

69.68 

6.71 

69.65 

7,01 

70 
71 

70.73 

6.19 

70.70 

6.50 

70.67 

6.81 

70.64 

7.11 

72 

71.73 

6.28 

71.70 

6.59 

71.67 

6.90 

71.64 

7.21 

72 

73 

72.72 

6.36 

72.69 

6.68 

72.66 

7.00 

72.63 

7.31 

78 

74 

73.72 

6.45 

73.69 

6.77 

73.66 

7.09 

73.63 

7.41 

74 

75 

74.71 

6.54 

74.69 

6.86 

74.65 

7.19 

74.62 

7.61 

75 

76 

75.71 

6.62 

75.68 

6.96 

76.65 

7.28 

76.62 

7.61 

76 

77 

76.71 

6.71 

76.68 

7.05 

76.65 

7.38 

76.61 

7.71 

77 

78 

77.70 

6.80 

77.67 

7.14 

77.64 

7.48 

77.61 

7.81 

78 

79 

78.70 

6.89 

78.67 

7.23 

78.64 

7.57 

78.60 

7.91 

79 

80 
81 

79.70 
80.69 

6.97 

79.66 

7.32 

79.63 

7.67 

79.60 

8.02 

80 

7.06 

80.66 

7.41 

80.63 

7.76 

80.59 

8.12 

81 

82 

81.69 

7.15 

81.66 

7.50 

81.62 

7.86 

81.69 

8.22 

82 

83 

82.68 

7.23 

82.65 

7.69 

82.62 

7.96 

82.. 58 

8.32 

83 

84 

83.68 

7.32 

83.65 

7.69 

83.61 

8.05 

83.68 

8.42 

84 

85 

84.68 

7.41 

84.64 

7.78 

84.61 

8.15 

84.57 

8.52 

85 

86 

85.67 

7.50 

85.64 

7.87 

85.60 

8.24 

86.57 

8.62 

86 

87 

86.67 

7.58 

86.64 

7.96 

86.60 

8.34 

86.66 

8.72 

87 

88 

87.67 

7.67 

87.63 

8.05 

87.59 

8.43 

87.66 

8.82 

88 

89 

88.66 

7.76 

88.63 

8.14 

88.69 

8.53 

88.55 

8.92 

89 

90 
91 

89.66 

7.84 

89.62 

8.24 

89.. 59 

8.63 

89.56 

9.02 

90 

90.65 

7.93 

90.62 

8.33 

90.58 

8.72 

90.64 

9.12 

91 

92 

91.65 

8.02 

91.61 

8.42 

91.68 

8.82 

91.54 

9.22 

93 

93 

92.65 

8.11 

92.61 

8.51 

92.57 

8.91 

92.63 

9.32 

93 

94 

93.64 

8.19 

93.61 

8.60 

93.57 

9.01 

93.63 

9.42 

94 

95 

94.64 

8.28 

94.60 

8.69 

94.56 

9.11 

94.52 

9.52 

95 

96 

95.63 

8.37 

95.60 

8.78 

95.56 

9.20 

95.52 

9.62 

96 

97 

96.63 

8.45 

96.59 

8.88 

96.65 

9.30 

96.51 

9.72 

97 

98 

97.63 

8.54 

97.59 

8.97 

97.55 

9.39 

97.51 

9.82 

98 

99 

98.62 

8.63 

98.59 

9.06 

98.64 

9.49 

9S.50 

9.92 

99 

100 

6 
o 

5 

99.62 

8.72 

99.58 

9.16 

99.54 

9.68 

99.50 

10.02 

100 

— :- 

s 

a 
S 

to 

s 

Dep. 

Lat. 

Dep. 

Lat.| 

Dep. 

Lat. 

Dep. 

Lat. 

85  1 

)eg. 

841  Deg.     1 

84A  Deg.      \ 

844  Deg. 

18 


14 


TRAVERSE    TABLE. 


1 

tn' 

3 
P 

6  Deg. 

64  Deg. 

6i  Deg. 

1 
6l   Deg. 

5 
P 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

1 

0.99 

0.10 

0.99 

0.11  i 

0.99 

0.11 

0.99 

0.12 

1 

2 

1.99 

0.21 

1.99 

0.22 

1.99 

0.23 

1.99 

0.24 

2 

3 

2.98 

0.31 

2.98 

0.33 

2.98 

0.34 

2.98 

0.35 

3 

4 

3.98 

0.41 

3.98 

0.44 

3.97 

0.45 

3.97 

0.47 

4 

5 

4.97 

0.52 

4.97 

0.64 

4.97 

0.57 

4.97 

0.59 

5 

6 

5.97 

0.63 

5.96 

0.65 

5.96 

0.68 

5.96 

0.71 

6 

7 

6.96 

0.73 

6.96 

0.76 

6.96 

0.79 

6.95 

0.82 

7 

8 

7.96 

0.84 

7.95 

0.87 

7.95 

0.91 

7.94 

0.94 

8 

9 

8.95 

0.94 

8.95 

0.98 

8.94 

1.02 

8.94 

1.00 

9 

10 
11 

9.95 

1.05 

9.94 

1.09 

9.94 

1.13 

9.93 

1.18 

10 

10.94 

1.15 

10.93 

1.20 

10.93 

1.25 

10.92 

1.29 

11 

12 

11.93 

1.25 

11.93 

1.31 

11.92 

1.36 

11.92 

1.41 

12 

13 

12.93 

1.36 

12.92 

1.42 

12.92 

1.47 

12.91 

1.53 

13 

14 

13.92 

1.46 

13.92 

1.52 

13.91 

1.59 

13.90 

1.65 

14 

15 

14.92 

1.57 

14.91 

1.63 

14.90 

1.70 

14.90 

1.76 

15 

16 

15.91 

1.67 

15.90 

1.74 

15.90 

1.81 

15.89 

1.88 

16 

17 

16.91 

1.78 

16.90 

1.85 

16.89 

1.92 

16.88 

2  00 

17 

18 

17.90 

1.88 

17.89 

1.96 

17.88 

2.04 

17.88 

2.12 

18 

19 

18.90 

1.99 

18.89 

2.07 

18.88 

2.15 

18.87 

2.23 

19 

20 
21 

19.89 

2.09 

19.88 
20.88 

2.18 
2.29 

19.87 

2.26 

19.86 

2.35 

20 

20.88 

2.20 

20.87 

2.38 

20.85 

2.47 

21 

22 

21.88 

2.30 

21.87 

2.40 

21.86 

2.49 

21.85 

2.59 

22 

23 

22.87 

2.40 

22.86 

2.50 

22.85 

2.60 

22.84 

2.70 

23 

24 

23.87 

2.51 

23.86 

2.61 

23.85 

2.72 

23.83 

2.82 

24 

25 

24.86 

2.61 

24.85 

2.72 

24.84 

2.83 

24.83 

2.94 

25 

26 

25.86 

2.72 

25.85 

2.83 

25.83 

2.94 

25.82 

3.06 

26 

27 

26.85 

2.82 

26.84 

2.94 

26.83 

3.06 

26.81 

3.17 

27 

28 

27.85 

2.93 

27.83 

3.05 

27.82 

3.17 

27.81 

3.29 

28 

29 

28.84 

3.03 

28.83 

3.16 

28. SI 

3.28 

28.80 

3.41 

29 

30 

29.84 

3.14 

29.82 

3.27 

29.81 

3.40 

29.79 

3.53 

30 

'31 

30.83 

3.24 

30.82 

3.37 

30.80 

3.51 

30.79 

3.64 

31 

32 

31  82 

3.34 

31.81 

3.48 

31.79 

3.62 

31.78 

3.76 

32 

33 

32.82 

3.45 

32.80 

3.59 

32.79 

3.74 

32.77 

3.88 

33 

34 

.33.81 

3.55 

33.80 

3.70 

33.78 

3.85 

33.76 

4.00 

34 

35 

34.81 

3.66 

34.79 

3.81 

34.78 

3.96 

34.76 

4.11 

35 

36 

35.80 

3.76 

35.79 

3.92 

35.77 

4.08 

35.75 

4.23 

36 

37 

36.80 

3.87 

36.78 

4.03 

36.76 

4.19 

36.75 

4.35 

37 

38 

37.79 

3.97 

37.77 

4.14 

37.76 

4.30 

37.74 

4.47 

38 

39 

38.79 

4.08 

38.77 

4.25 

38.75 

4.41 

38.73 

4.58 

39 

40 

39.78 

4.18 

39.76 

4.35 

39.74 

4.. 53 

39.72 

4.70 

40 

'41 

40.78 

4.29 

40.76 

4.46 

40.74 

4.64 

40.72 

4.82 

41 

42 

41.77 

4.39 

41.73 

4.57 

41.73 

4.76 

41.71 

4.94 

42 

43 

42.76 

4.49 

42.74 

4.68 

42.72 

4.87 

42.70 

5.05 

43 

44 

43.76 

4.60 

43.74 

4.79 

43.72 

4.98 

43.70 

5.17 

44 

45 

44.75 

4.70 

44.73 

4.90 

44.71 

5.09 

44.69 

5.29 

45 

46 

45.75 

4.81 

45.73 

5.01 

45.70 

5.21 

45.68 

5.41 

46 

47 

46.74 

4.91 

46.72 

5.12 

46.70 

5.32 

46.67 

5.52 

47 

48 

47.74 

5.02 

47.71 

5.23 

47.69 

5.43 

47.67 

6.64 

48 

49 

48.73 

,  5.12 

48.71 

5.34 

48.69 

5.55 

48.66 

5.76 

49 

50 

49.73 

5.23 

49.70 

5.44 

49.68 

5.66 

49.65 

5.88 

50 

i 

Dop. 

Lat. 

Dep. 

83} 

Lat. 
Deg. 

Dep. 

Lat. 

Dep. 

Lat. 

c 

5 
1 

I   84 

Deg 

B3.i 

Deg. 

83\ 

Deg. 

TRAVERSE    TABLE. 


!5 


5 

"61 

6  Deg. 

64  Deg. 

6^  Deg   J 
Lat.   Dep. 

6|  Deg. 

1 
P 
51 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

50.72 

5.33 

50.70 

5.55 

50.67 

5.77 

50.65 

5.99 

52 

51.72 

5.44 

51.69 

5.66 

51.67 

5.89 

51.64 

6.11 

52 

53 

52.71 

5.. 54 

52.68 

5.77 

.52.66 

6.00 

52.63 

6.23 

53 

54  53.70  1 

5.64 

53.68 

5.88 

53.65 

6.11 

53.63 

6.35 

54 

55  ; 

54.70 

5.75 

54.67 

5.99 

54.65 

6.23 

54.62 

6.46  1 

55 

56 

55.69 

5.85 

55.67 

6.10 

55.64 

6.. 34 

55.61 

6.. 58 

56 

57 

56.69 

5.96 

56.66 

6.21 

56.63 

6.45! 

56.60 

6.70 

57 

58 

57.68 

6.06 

57.66 

6.31 

.57.63 

6.57; 

57.60 

6.82 

58 

59 

58.68 

6.17 

58.65 

6.42 

,58.62 

6.68 

58.59 

6.93 

59 

60 
61 

59.67 

6.27 

59.64 

6.53 

59.61 

6.79! 

59.58 
60.58 

7.05 

60 

61 

60.67 

6.. 38 

60.64 

6.64 

60.61 

6.91 

7.17  1 

62 

61.66 

6.48 

61.63 

6.75 

61.60 

7.02 

61.57 

7.29 

62 

63 

62.65 

6. .59 

62.63 

6.86 

62.60 

7.13! 

62.56 

7.40 

63 

64 

63.65 

6.69  i 

63.62 

6.97 

63.59 

7.25 

63.56 

7.52 

64 

65 

64.64 

6.79! 

64.61 

7.08 

64.58 

7.36  1 

64.55 

7.64 

65 

66 

65.64 

6.90 

65.61 

7.19 

65.58 

7.47 

65.54 

7.76, 

66 

67 

66.63 

7.00 

66.60 

7.29 

66.57 

7  58 

66.54 

7.88  1 

67 

68 

67.63 

7.11 

67.60 

7.40 

67.56 

7.70 

67.53 

7.99  1 

68 

69 

68.62 

7.21 

68.59 

7.51 

68.56 

7.81 

68.52 

8.11  ! 

69 

70 
71 

69.62 

7.32 

69.58 

7.62 

69.55 

7.92 

69.51 

8.23! 

70 
71 

70.61 

7.42 

70.58 

7.73 

70.54 

8.04 

70.51 

8.35 

72 

71.61 

7.53 

71.. 57 

7.84 

71.54 

8.15 

71.50 

8.46  ! 

72 

73 

72.60 

7.63 

72.57 

7.95 

72.53 

8.26 

72.49 

8.58 

73 

74 

73.. 59 

7.74 

73.56 

8.06 

73.52 

8.. 38 

73.49 

8.70 

74 

75 

74.. 59 

7.84 

74.55 

8.17 

74.52 

8.49 

74.48 

8.82 

75 

76 

75.58 

7.94 

75.55 

8.27 

75.51 

8.60 

75.47 

8.93 

76 

77 

76.58 

8.05 

76.54 

8.38 

76.51 

8.72 

76.47 

9.05 

77 

78 

77.57 

8.15 

77.54 

8.49 

77.50 

8.83 

77.46 

9.17 

78 

79 

78.. 57 

8.26 

78.53 

8.60 

78.49 

8.94 

78.45 

9.29 

79 

80 

81 

79.56 

8.36 

79.53 

8.71 

79.49 

9.06 
9.17 

79.45 

9.40 

80 

81 

80.56 

8.47 

80.52 

8.82 

80.48 

80.44 

9.52 

82 

81.55 

8.57 

81.51 

8.93 

81.47 

9.28 

! 81.43 

9.64 

82 

83 

82.55 

8.68 

82.51 

9.04 

82.47 

9.40 

82.42 

9.76 

83 

84 

83.. 54 

8.78 

83.50 

9.14 

83.46 

9.51 

83.42 

9.87 

84 

85 

84.53 

8.88 

84.50 

9.25 

84.45 

9.62 

,84.41 

9.99 

85 

86 

85.53 

8.99 

85.49 

9.36 

85.45 

9.74 

85.40 

10.11 

86 

87 

86.52 

9.09 

86.48 

9.47 

86.44 

9.85 

(86.40 

10.23 

87 

88 

87.52 

9.20 

87.48 

9.58 

87.43 

9.96 

; 87.39 

10.34 

88 

89 

88.51 

9.30 

88.47 

9.69 

88.43 

10.08 

188.38 

10.46 

89 

90 

89.51 

9.41 

89.47 

9.80 

89.42 

10.19 

! 89.38 

10.58 

90 
91 

91 

90.50 

9.51 

90.46 

9.91 

90.42 

10.30 

90.37 

10.70 

92 

91.50 

9.62 

91.45 

10.02 

91.41 

10.41 

91.30 

10.81 

92 

93 

92.49 

9.72 

92.45 

10.12 

92.40 

10.53 

92.36 

10.93 

93 

94 

93.49 

9.83 

93.44 

10.23 

93.40 

10.64 

93.35 

11.05 

94 

95 

94.48 

9.93 

94.44 

10.34 

94.39 

10.75 

94.34 

11.17 

95 

96 

95.47 

10.03 

95.43 

10.45 

95.38 

10.87 

95.33 

11.28 

96 

97 

96.47 

10.14 

96.42 

10.56 

96.38 

10.98 

96.33 

11.40 

97 

98 

97.46 

10.24 

97.42 

10.67 

97.. 37 

11.09 

97.32 

11.52 

98 

99 

98.46 

10.35 

98.41 

10.78 

98.36 

11.21 

98.31 

11.64 

99 

100 

1 

.2 
Q 

99.45 

10.45 

99.41 

10.89 

99.36 

11.32 

99.31 

11.75 

100 

6 

B 

X 

1  " 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

84  Deg. 

83|  Deg. 

8^ 

Deg. 

83i  Deg. 

16 


I'ravkkse  table. 


3 
O 

9 

7Deg. 

1\   Deg. 

7^  Deg 

71  Deg. 

53 
§ 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat, 

Dep. 

0.99 

0.12 

0.99 

0.13 

0.99 

0.13 

0.99 

0.13 

1 

2 

1.99 

0.24 

1.98 

0.25 

1.98 

0.20 

1.98 

0.27 

2 

3 

2.98 

0.37 

2.98 

0.38 

2.97 

0.39 

2.97 

0.40 

3 

4 

3.97 

0.49 

3.97 

0.50 

3.97 

0.52 

3.96 

0.64 

4 

5 

4.96 

0.61 

4.96 

0.63 

4.96 

0.65 

4.95 

0.67 

6 

6 

6.96 

0.73 

5.95 

0.76 

6.95 

0.78 

5.96 

0.81 

6 

7 

6.95 

0.85 

0.94 

0.88 

6.94 

0.91 

6.94 

0.94 

7 

8 

7.94 

0.97 

7.94 

1. 01 

7.93 

1.04 

7.93 

1.08 

8 

9 

8.93 

1.10 

8.93 

1.14 

8.92 

1.17 

8.92 

1.21 

9 

10 

9.93 

1.22 

9.92 

1.26 

9.91 

1.31 

9.91 

1.36 

10 
11 

n 

10.92 

1.34 

10.91 

1.39 

10.91 

1.44 

10.90 

1.48 

12 

11.91 

1.46 

11.90 

1.51 

11.90 

1.67 

11.89 

1.62 

12 

13 

12.90 

1.58 

12.90 

1.64 

12.89 

1.70 

12.88 

1.75 

13 

14 

13.90 

1.71 

13.89 

1.77 

13.88 

1.83 

13.87 

1.89 

14 

15 

14.89 

1.83 

14.88 

1.89 

14.87 

1.96 

14.86 

2.02 

16 

16 

15.88 

1.95 

15.87 

2.02 

15.86 

2.09 

16.85 

2.16  161 

17 

16.87 

2.07 

16.86 

2.15 

16.85 

2.22 

16.84 

2.29 

17 

18 

17.87 

2.19 

17.86 

2.27 

17.86 

2.36 

17.84 

2.43 

18 

19 

18.86 

2.32 

18.85 

2.40 

18.84 

2.48 

18.83 

2.56 

19 

20 

19.85 

2.44 

19.84 

2.52 

19.83 

2.61 

19.82 

2.70 

20 

21 

20.84 

2.56 

20.83 

2.65 

20.82 

2.74 

20.81 

2.83 

21 

22 

21.84 

2.68 

21.82 

2.78 

21.81 

2.87 

21.80 

2.97 

22 

23 

22:83 

2.80 

22.82 

2.90 

22.80 

3.00 

22.79 

3.10 

23 

24 

23.82 

2.92 

23.81 

3.03 

23.79 

3.13 

23.78 

3.24 

24 

25 

24.81 

3.05 

24.80 

3.15 

24.79 

3.26 

24.77 

3.37 

25 

26 

25.81 

3.17 

25.79 

3.28 

25.78 

3.39 

25.76 

3.51 

26 

27 

26.80 

3.29 

26.78 

3.41 

26.77 

3.62 

26.75 

3.64 

27 

28 

27.79 

3.41 

27.78 

3.53 

27.76 

3.66 

27.74 

3.78 

28 

29 

28.78 

8.53 

28.77 

3.66 

28.76 

3.79 

28.74 

3.91 

29 

80 

29.78 

3.66 

29.76 

3.79 

29.74 

3.92 

29.73 

4.06 

30 

31 

30.77 

3.78 

30.75 

3.91 

30.73 

4.05 

30.72 

4.18 

31 

32 

31.76 

3.90 

31.74 

4.04 

31.73 

4.18 

31.71 

4.32 

32 

33 

32.75 

4.02 

32.74 

4.16 

32.72 

4.31 

32.70 

4.45 

33 

34 

33.75 

4.14 

33.73 

4.2-9 

33.71 

4.44 

33.69 

4.58 

34 

35 

34.74 

4.27 

34.72 

4.42 

34.70 

4.67 

34.68 

4.72 

36 

36 

35.73 

4.39 

35.71 

4.54 

36.69 

4.70 

36.67 

4.85 

»6 

37 

36.72 

4.51 

36.70 

4.67 

36.68 

4.83 

36.66 

4.99 

37 

38 

37.72 

4.63 

37.70 

4.80 

37.67 

4.96 

37.65 

5.12 

38 

39 

38.71 

4.75 

38.69 

4.92 

38.67 

5.09 

38.64 

5.26 

39 

40 

41 

39.70 

4.87 

39.68 

5.05 

39.66 

5.22 

39.63 

6.39 

40 
41 

40.70 

5.00 

40.67 

5.17 

40.66 

6.35 

40.63 

5.53 

42 

41.69 

5.12 

41.66 

5.30 

41.64 

6.48 

41.62 

6.66 

42 

43 

42.68 

5.24 

42.66 

5.43 

42.63 

5.61 

42.61 

6.80 

43 

44 

43.67 

5.36 

43.65 

5.55 

43.62 

5.74 

43.60 

5.93 

44 

45 

44.67 

5.48 

44.64 

5.68 

44.62 

5.87 

44.59 

6.07 

45 

46 

45.66 

5.61 

45.63 

5.81 

46.61 

6.00 

45.58 

6.20 

46 

47 

46.65 

5.73 

46.62 

5.93 

46.60 

6.13 

46.57 

6.34 

47 

48 

47.64 

5.85 

47.62 

6.06 

47.69 

6.27 

47.  ?6 

6.47 

48 

49 

48.63 

5.97 

48.61 

6.18 

48.58 

6.40 

48.65 

6.61 

49 

50 

49.63 

6.00 

49.60 

6.31 

49.67 

6.53 

49.54 

6.74 

50 

9 
U 

a 
S 
.2 

Q 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

i 

83 

Deg. 

82^ 

Deg. 

821 

i, 

Deg. 

m  Deg. 

TRAVEIt^J;    TA]?LE. 


17 


9. 

I 

7Deg. 

1i  Deg. 

H  Deg. 

7|  Deg. 

i 

C 

m' 

i" 

9 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep.  1 

Lat. 

Dep. 

51 

50.62 

6.22 

50.59 

6.44 

.50.56      6.66  1 
51.56      6.79 

50.53 

6. 88 

51 

52 

51.61 

6.34 

51.58 

6.56 

51.53 

7.01  i 

52 

53 

52.60 

6.46 

52.58 

6.69 

.52.55      6.92  1 

52.52 

7.15 

63 

54 

53.60 

6.58 

53.57 

6.81 

.53.54      7.05 

53.51 

7.28  1 

54 

55 

54.59  1 

6.70 

54.56 

6.94 

54.53      7.18 

54. 5U 

7.42  1 

55 

56 

55.58  1 

6.82 

55.55 

7.07 

55.52      7.31 

55.49 

7.55 

56 

57 

.56.58 

6.95'; 

56.54 

7.19 

56.51       7.441 

56.48 

7.69 

57 

58 

57.57 

7.07 

57.54 

7.32 

57.50 

7.57 

.57.47 

7.82  1 

58 

59 

58.56 

7.19 

58.53 

7.45 

58.50 

7.70 

58.46 

7.96 

59 

60 
61 

59 .  55 

7.31 

59.52 

7.57 

59.49 

7.83 

59.45 

8.09  ! 

60 
61 

60.55 

7.43 

60.51 

7.70 

60.48 

7.96 

60.44 

8.23  1 

63 

61.54 

7.56 

61.50 

7.82 

61.47 

8.09 

61.43 

8.36 

62 

63 

62.53 

7.68 

62.50 

7.95 

62.46 

8.22 

62.42 

8.50 

63 

64 

63.52 

7.80 

63.49 

8.08 

63.45 

8.35 

63.42 

8.63 

64 

65 

64.52 

7.92 

64.48 

8.20 

64.44 

8.48 

64.41 

8.77 

65 

66 

65.51 

8.04 

65.47 

8.33 

65.44 

8.G1 

65.40 

8.90 

66 

67 

63  50 

8.17 

66.46 

8.46 

66.43 

8.75 

66.39 

9.04 

67 

G8 

67.49 

8.29 

67.46 

8.58 

67.42 

8.88 

67.38 

9.17 

6S 

69 

68.49 

8.41 

68.45 

8.71 

68.41 

9.01 

68.37 

9.30 

69 

70 
71 

69.48 

8.63 

69.44 

8.83 

69.40 

9.14 

69.36 

9.44 

70 
71 

70.47 

8.65 

70.43      8.96 

70.39 

9.27 

70.35 

9.57 

72 

71.46 

8.77 

71.42      9.09 

71.38 

9.40 

71.34 

9.71 

72 

73 

72.46 

8.90 

72.42      9.21 

72  38 

9.53 

72.33 

9.84 

73 

74 

73.45 

9.02 

73.41       9.34 

73.37 

9.661 

73.32 

9.98 

74 

75 

74.44 

9.14 

74.40      9.46 

74.36 

9.79 

74.31 

10.11 

75 

76 

75.43 

9.26 

75.39      9.59 

75.35 

9.92 

75.31 

10.25 

76 

77 

76.43 

9.38 

176.38  1    9.72 

76.34 

10.05 

76.30 

10.38 

77 

78 

77.42 

9,51 

1  77.38  1    9.84 

77.33 

10.18  i  77.29 

10., 52 

78 

79 

73.41 

9.63 

178.37!    9.97 

78.32 

10.31  !i  78.28 

10.65 

79 

80 
81 

79.40 

9.75 

79.36 

10.10 

79.32 

"80.31 

10.44  ll  79.27 

10.79 

80 
81 

80.40 

9.87 

180.35 

10.22 

10.57 

1 80.26  1  10.92 

82 

81.39 

9.99 

81.34 

10.35 

81.30 

10.70 

181.25 

11.06 

82 

83 

82.38 

10.12 

82.34 

10.47 

82.29 

10.83 

82.24 

11.19 

83 

84 

83.37 

10.24 

83.33 

10.60 

83.28 

10.96 

83.23 

11.33 

84 

85 

84.37 

10.36 

84.32 

10.73 

84.27 

11.09 

84.22 

11.46 

85 

86 

85.36 

10.48 

85.31 

10.85 

85.26 

11.23 

85.21 

11.60 

1    86 

87 

86.35 

10.60 

86.30 

10.98 

86.26 

11.36 

86.21 

11.73 

87 

88 

87.34 

10.72 

87.30 

11.11 

87.25 

11.49 

87.20 

11.87 

88 

89 

88.34 

10.85 

88.29 

11.23 

88.24 

11.62 

88.19 

12.00 

89 

90 
91 

89.33 

10  97 

89.28 

11.36 

89.23 

11.75 

89.18 

12.14 

90 
91 

90.32 

11.09 

90.27 

11.48 

90.22 

11.88 

90.17 

12.27 

92 

91.31 

11.21 

91.26 

11.61 

91.21 

12.01 

91.16 

12.41 

92 

93 

92.31 

11.33 

92.26 

11.74 

92.20 

12.14 

92.15 

12.54 

93 

94 

93.30 

11.46 

93.25 

11.86 

93.20 

12.27 

93.14 

12.68 

94 

95 

94.29 

11.58 

94.24 

11.99 

94.19 

12.40 

94.13 

12.81 

95 

96 

95.28 

11.70 

95.23 

12.12 

95.18 

12.53 

95.12 

12.95 

96 

97 

96.28 

11.82 

96.22 

12.24 

96.17 

12.66 

96.11 

13.08 

97 

98 

97.27 

11.94 

97.22 

12.37 

97.16 

12.79 

97.10 

13.22 

98 

99 

98.26 

12.07 

98.21 

12.49 

98.15 

12.92 

98.10 

13.35 

99 

100 

(3 

99.25 

12.19 

99.20 

12.62 

99.14 

13.05 

99.09 

13.49 

100 

1 

Dep. 

Lat. 

Dep. 

Lat. 

Dc-p. 

Lat. 

Dep. 

Lat. 

83] 

Deg. 

82|  Deg. 

82i  Deg. 

82i  Deg. 

18 


TRAVERSE    TARLE. 


w  i        8  Deg. 

8i  Deg. 

8|  Dog. 

8!  Deg. 

3 

1 

P 

i 

CO 

Lai. 

Dcp. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

1  1    0.99 

0.14 

0.99 

0.141 

0.99 

0.15 

0.99 

0.15 

1 

2|     1.98 

0.28 

1.98 

0.29 

1.98 

0.30 

1.98 

0..30 

2 

3l    2.97 

0.42 

2.97 

0.43 

2.97 

0.44 

2.97 

0.46 

3 

4i    3.9G 

0..56 

3.96 

0.57 

3. 90 

0.59 

3.95 

0.61 

4 

5!    4.95 

0.70; 

0.84 

4.95 

0.72 

4.95 

0.74 

4.94 

0.76       5  1 

6  I    5.94 

5.94 

0.86 

5.93 

0.89 

5.93 

0.91       6| 

7i    6.93 

0.97  1    6.93 

1.00 

6.92 

1.03 

fi.92 

1.06 

7 

8!    7.92 

l.Il  !!    7.92 

1.15 

7.91 

1.18 

7.91 

1.22 

8 

9  1    S.91 

1.25  ii    8.91 

1.29 

8.90 

1.33 

8.90 

1.37 

9 

10 

9.90 

1.39  1!    9.90 

1.43 

9.89 

1.48 

9.88 

1.52 

10 

U 

10.89 

1.53 

10.89 

1.58! 

10.88 

1.63! 

10.87 

1.07 

11 

12  i  11.88 

1.67 

11.88 

1.72  1 

11.87 

1.77 

11.86 

1.83 

12 

13!  12.87 

1.81 

12.87 

1.87  1 

12.86 

1.92 

12.85 

1.98 

13 

14  1  13.86 

1.95 

13.80 

2.01 

13.85 

2.07 

13.84 

2.13 

14 

15  :  14.85 

2.09 

14.85 

2.15 

14.84 

2.22 

14.83 

2.28 

15 

16 

15.84 

2.23 

15.84 

2.30  1 

15.82 

2.36 

15.81 

2.43 

16 

17 

10.83 

2.37 

10.83 

2.44 

16.81 

2.51 

16.80 

2.59     17 

IS 

17.82 

2.51 

17.81 

2.. 58 

17.80 

2.66 

17.79 

2.74  1    18 

19 

18.82 

2.64 

18.80 

2.73  1 

18.79 

2.81 

18.78 

2.89      19 

20 

19.81 

2.78 

19.79 

2.87! 

19.78 

2.96 

19.77 

3.04     20 

21 

20.80 

2.92 

20 .  78 

3.01  1 

20.77 

3.10 

20.76 

3.19  1   21 

22 

21.79 

3.06 

21.77 

3.16 

21.76 

3.25 

21.74 

3.35     22 

23 

22.78 

3.20 

22.76 

3.30 

22.75 

3.40 

22.73 

3.50     23 

24 

23.77 

3.34 

23.75 

3.44 

23.74 

3.55  ';' 23.72 

3.65     24 

25^24.76 

3.48 

24.74 

3.59 

24.73 

3.70  i 24.71 

3.80     25 

26  125.75 

3.62 

25 .  73 

3.73 

25.71 

3.84 

125.70 

3.96     26 

27  126.74 

3.76 

26.72 

3.87 

26.70 

3.99 

;26.69 

4.11  1  27 

28  127.73 

3.90  1 

27.71 

4.02 

27.69 

4.14 

1 27.67 

4.26 

28 

29:28.72 

4.04 

28.70 

4.16 

28.68 

4.29 

,28.66 

4.41 

29 

30  129.71 

4.18' 

29.69 

4.30 

29.67 

4.43 

29.65 

4.56 

30 

31  ! 30.70 

4.31 

30.68 

4.45 

30.66 

4.58 

! 30.64 

4.72 

31 

32  131.69 

4.45 

31.67 

4.59 

31.65 

4.73 

31.63 

4.87 

32 

33!  32.68 

4.59 

32.66 

4.74 

32.64 

4.83 

32.62 

5.02 

33 

34  1  33.67 

4.73 

33.65 

4.88 

33.63 

5.03 

33.60 

5.17 

34 

35  134.66 

4.87 

34.64 

5.02 

34.62 

5.17 

34.59 

5.32 

35 

36  135.65 

5.01 

35.63 

5.17 

35.60 

5.. 32 

35.58 

5.48 

36 

37  136.64 

5.15 

36.62 

5.31 

36.59 

5.47 

36.57 

5.63 

37 

38    37.63 

5.29 

37.61 

5.45 

37.58 

5.62 

37.56 

5.78 

38 

39    38.62 

5.43 

38.60 

5.60 

38.57 

5.76 

38.55 

5.93 

39 

40  139.61 

5.. 57 

39.59 

5.74 

39.56 

5.91 

39.53 
40.52 

6.08 

40 

41  !  40.60 

5.71 

40.58 

5.88 

40.55 

6.06 

6.24 

41 

42 

41.59 

5.85 

41.57 

6.03 

41.54 

6.21 

41.51 

6.39 

42 

43 

42.. 58 

5.98 

42.56 

6.17 

42.53 

6.36 

42.50 

6.54 

43 

44 

43.57 

6.12 

43., 54 

6.31 

43.52 

6.50 

43.49 

6.69 

44 

45 

44.56 

6.26 

44.53 

6.46 

44.51 

6.65 

! 44.43 

6.85 

45 

46 

45.55 

6.40 

45.52 

6.60 

45.49 

6.80 

'45.46 

7.00 

46 

47 

46.54 

6.54 

46.51 

6.74 

46.48 

6.95 

46.45 

7.15!  47  1 

48 

47.53 

6.68 

47.50 

6.89 

47.47 

7.09 

147.44 

7.30 

48 

49 

48.52 

6.82 

48.49 

7.03 

48.46 

7.24 

48.43 

7.45 

49 

50 

i 

5 

49.51 

6.96 

49.48 

7.17 

49.45 

7.39 

49.42 

7.61 

50 

Dep. 

L.at. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

82 

Deg. 

nil 

Deg. 

s\k 

Deg. 

8U 

Deg. 

TRAVERSE    TABLE. 


19 


? 

61 

8Deg. 

«i  Deg. 

H  Deg. 

81  Deg. 

B 

o 

? 

~5l 

Lat. 
50750 

Dep. 

Lat. 
50.47 

Dep. 
7.32 

Lat.      Dep. 

1 

Lat. 

Dep. 

7.10 

50.44 

7.54 

50.41 

7.76 

52 

51.49 

7.24 

51.46 

7.46 

51.43 

7.89 

61.. 39 

7.91 

62 

53 

62.48 

7.38 

52.45 

7.61 

52.42 

7.83 

62.38 

8.06 

63 

54 

53.47 

7.52 

53.44      7.75 

53.41 

7.98 

53.37 

8.21 

54 

55 

54.46 

7.85 

54.43      7.89 

54.40 

8.13 

54.36 

8.37 

55 

56 

55.48 

7.79 

55.42 

8.04 

55.38 

8.28 

55.36 

8.62 

68 

57 

56.45 

7.93 

56.41 

8.18 

58.37 

8.43 

56.34 

8.67 

67 

58 

57.44 

8.07 

67.40 

8.32 

57.38 

8.57 

57.32 

8.82 

58 

59 

58.43 

8.21 

58.39 

8.47 

68.35 

8.72 

68.31 

8.98 

59 

60 

59.42 

8.35 

59-38 

8.61 

59.34 

8.87 

69.30 

9.13 

60 

61 

60.41 

8.49 

60.37 

8.75 

60.33 

9.02 

80.29 

9.28 

81 

62 

61.40 

8.83 

61.36 

8.90 

61.32 

9.16 

61.28 

9.43 

62 

63 

62.39 

8.77 

62.35 

9.04 

82.31 

9.31 

62.27 

9.58 

63 

64 

63.38 

8.91 

63.34 

9.18 

63.30 

9.46 

63.20 

9.74 

64 

65 

64.37 

9.05 

64.33 

9.33 

64.29 

9.81 

64.24 

.9.89 

65 

60 

65.38 

9.19 

85.32 

9.47 

65.28 

9.76 

65.23 

10.04 

66 

67 

66.35 

9.32 

66.31 

9.61 

86.26 

9.90 

86.22 

10.19 

87 

68 

67.34 

9.46 

67.30 

9.76 

67.25 

10.05 

87.21 

10.34 

68 

69 

68.33 

9.60 

68.29 

9.90 

68.24 

10.20 

68.20 

10.50 

69 

70 
71 

69.32 

9.74 

69.28 

10.04 

69.23 

10.35 

69.19 

10.65 

70 

71 

70.31 

9.88 

70.27 

10.19 

70.22 

10.49 

70.17 

10.80 

72 

71.30 

10.02 

71.25 

10.33 

71.21 

10.64 

71.16 

10.95 

72 

73 

72.29 

10.16 

72.24 

10.47 

72.20 

10.79 

72.15 

11.10 

73 

74 

73.28 

10.30 

73.23 

10.62 

73.19 

10.94 

73.14 

11.26 

74 

75 

74.27 

10.44 

74.22 

10.76 

74.18 

11.09 

74.13 

11.41 

75 

78 

75.28 

10.58 

75.21 

10.91 

75.17 

11.23 

75.12 

11.66 

76 

77 

78.25 

10.72 

76.20 

11.05 

78.15 

11.38 

76.10 

11.71 

77 

78 

77.24 

10.86 

77.19 

11.19 

77.14 

11.63 

77.09 

11.87 

78 

79 

78.23 

10.99 

78.18 

11.34 

78.13 

11.68 

78.08 

12.02 

79 

80 
81 

79.22 

11.13 

79.17 

11.48 

79.12 

11.82 

79.07 

12.17 

80 
81 

80.21 

11.27 

80.16 

11.62 

80.11 

11.97 

80.08 

12.32 

82 

81.20 

11.41 

81.15 

11.77 

81.10 

12.13 

81.05 

12.47 

82 

83 

82.19 

11.55 

82.14 

11.91 

82.09 

12.27 

82.03 

12.63 

83 

84 

83.18 

11.69 

83.13 

12.05 

83.08 

12.42 

83.02 

12.78 

84 

85 

84.17 

11.83 

84.12 

12.20 

84.07 

12.66 

84.01 

12.93 

85 

86 

85.16 

11.97 

85.11 

12.34 

85.08 

12.71 

85.00 

13.08 

88 

87 

86.15 

12.11 

88.10 

12.48 

86.04 

12.86 

86.99 

13.23 

87 

88 

87.14 

12.25 

87.09 

12.63 

87.03 

13.01 

86.98 

13.39 

88 

89 

88.13 

12.39 

88.08 

12.77 

88.02 

13.18 

87.98 

13.64 

89 

90 
31 

89.12 

12.53 

89.07 
90.06 

12.91 

89.01 

13.30 

88.96 

13.69 

90 
91 

90.11 

12.66 

13.08 

90.00 

13.45 

89.94 

13.84 

92 

91.10 

12.80 

91.05 

13.20 

90.99 

13.60 

90.93 

14.00 

92 

93 

92.09 

12.94 

•92.04 

13.34 

91.98 

13.76 

91.92 

14.15 

93 

94 

93.09 

13.08 

93.03 

13.49 

92.97 

13.89 

92.91 

14.30 

94 

95 

94.08 

13.22 

94.02 

13.63 

93.98 

14.04 

93.89 

14.45 

96 

96 

95.07 

13.38 

95.01 

13.78 

94.95 

14.19 

94.88 

14.60 

96 

97 

96.06 

13.50 

96.00 

13.92 

95.93 

14.34 

95.87 

14.76 

97 

98 

97.05 

13.64 

96.99 

14.06 

96.92 

14.49 

96.86 

14.91 

98 

99 

98.04 

13.78 

97.98 

14.21 

97.91 

14.63 

97.85 

15.06 

99 

100 

i 

Ir. 

o 

99.03 

13.92 

98.97 

14.35 

98.90 

14.78 

98.84 

15.21 

100 

Dep. 

1    Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

.2 

82 

Dcg. 

1       Kl|  Dej:. 

1^ 

81^  Deg. 

1      OU  Deg. 

'1 

20 


TRAVIKSE    TAIJLK. 


1 

9  Deg. 

9i  Deg. 

9-^ 

Deg. 

91 

Deg 

55' 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat 

Dep. 

1  1  0.99 

0.16 

0.99 

0.16 

0.99 

0.17 

0.99 

0.17 

1 

2 

1.98 

0.31 

1  .97 

0.32 

1.97 

0.33 

1.97 

0.34 

2 

3 

2.96 

0.47 

2.96 

0.48 

2.96 

0..50 

2.96 

0.51 

3 

4 

3.95 

0.63 

3.95 

0.64 

3.95 

0.66 

3.94 

0.68 

4 

5 

4.94 

0.78 

4.93 

0.80 

4.93 

0.83 

4.93 

0.85 

5 

6 

5.93 

0.94 

5.92 

0.96 

5.92 

0.99 

5.91 

1.02 

6 

7 

6.91 

1.10 

0.91 

1.13 

6.90 

1.16 

6.90 

1.19 

7 

8 

7.90 

1.25 

7.90 

1.29 

7.89 

1.32 

7.88 

1.35 

8 

9 

8.89 

1.41 

8.88 

1.45 

8.88 

1.49 

8.87 

1.52 

9 

10 
11 

9.88 

1.56 

9.87 

1.61 

9.86 

1.65 

9.86 

1.69 

10 

10.86 

1.72 

10.86 

1.77 

10.85 

1.82 

10.84 

1.86 

11 

12 

11.85 

1.88' 

11.84 

1.93 

11.84 

1.98 

11.83 

2.03 

12 

13 

12.84 

2.03] 

12.83 

2.09 

12.82 

2.15 

12.81 

2.20 

13 

14 

13.83 

2.191 

13.82 

2.25 

13.81 

2.31 

13.80 

2.37 

14 

15 

14.82 

2.35 

14.80 

2.41 

14.79 

2.48 

14.78 

2.54 

15 

16 

15.80 

2.50 

15.79 

2.57 

15.78 

2.64 

15.77 

2.71 

16 

17 

16.79 

2.661 

16.78 

2.73 

16.77 

2.81 

16.75 

2.88 

17 

IS 

17.78 

2.82  1 

17.77 

2.89 

17.75 

2.97 

17.74 

3.05 

18 

19 

18.77 

2.97i 

18.75 

3.05 

18.74 

3.14 

18.73 

3.22 

19 

20 
21 

19.75 

3.13  1 

19.74 

3.21 

19.73 

3.30 

19.71 

3.39 

20 

20.74 

3.29  j 

20.73 

3.38 

20.71 

3.47 

20.70 

3.. 56 

21 

22 

21.73 

3.44 

21.71 

3.. 54 

21.70 

3.63 

21.68 

3.73 

22 

23 

22.72 

3.60l 

22.70 

3.70 

22.68 

3.80 

22.67 

3.90 

23 

24 

23.70 

3.75  1 

23.69 

3.86 

23.67 

3.96 

23.65 

4.06 

24 

25 

24.69 

3.91 

24.67 

4.02 

24.68 

4.13  i 

24.64 

4.23 

25 

2fi 

25.68 

4.07 

25.66 

4.18 

25.64 

4.29 

25.62 

4.40 

26 

27 

28.67 

4.22 

26.65 

4.34 

26.63 

4.46 

26.61 

4.. 57 

27 

28  27.66 

4.38 

27.64 

4.50 

27.02 

4.62 

27.60 

4.74 

28 

29  28,64 

4.54 

28.62 

4.66 

28.60 

4.79 

28.58 

4.91 

29 

30 
31 

29.63 

4.69 

29.61 

4.82 

29.59 

4.95 

29.57 

5.08 

30 
31 

30.62 

4.85 

30.-30 

4.98 

30.57 

5.12 

30.55 

5.25 

32 

31.61 

5.01 

31.58 

5.14 

31.. 56 

5.28 

31.54 

5.42 

32 

33 

32.59 

5.16 

32.57 

5.30 

32.55 

5.45 

32.52 

5.59 

33 

34 

33.58 

5.32 

33.. 56 

5.47 

33.53 

5.61 

33.51 

5.76 

34 

35 

34.57 

5.48 

34.54 

5.63 

34.52 

5.78 

34.49 

5.93 

35 

36 

35.56 

5.63 

35.53 

5.79 

35.51 

5.94 

35.48 

6.10 

36 

37 

36.54 

5.79 

36.52 

5.95 

36.49 

6.11 

36.47 

6.27 

37 

38 

37.53 

5.94 

37.51 

6.11 

37.48 

6.27 

37.45 

6.44 

38 

39 

38.52 

6.10 

38.49 

6.27 

38.47 

6.44 

38.44 

6.60 

39 

40 
41 

39.51 

6.26 

39.48 

6.43 

39.45 

6.60 

39.42 

6.77 

40 
41 

40.50 

6.41 

40.47 

6.59 

40.44 

6.77 

40.41 

6.94 

42 

41.48 

6.57 

41.45 

6.75 

41.42 

6.92 

41.39 

7.11 

42 

43 

42.47 

6.73 

42.44 

6.91 

42.41 

7.10 

42.38 

7.28 

43 

44 

43.46 

6.88 

43.43 

7.07 

43.40 

7.26 

43.36 

7,45 

44 

45 

44.45 

7.04 

44.41 

7.23 

44.. 38 

7.43 

44.35 

7.62 

45 

46 

45.43 

7.20 

45.40 

7.39 

45.37 

7.59 

45.34 

7.79 

46 

47 

46.42 

7.35 

46.39 

7.55 

46.36 

7.76 

46.32 

7.96 

47 

48 

47.41 

7.51 

47.38 

7.72 

47.34 

7.92 

47.31 

8.13 

48 

49 

48.40 

7.67 

48.36 

7.88 

48.33 

8.09 

48.29 

8.30 

49 

50 

49.38 

7.82 

49.35 

8.04 

49.32 
Dep. 

8.25 

49.28 

8.47 

50 

"  i 

a 

ft 

i 

Q 

Dep. 

Lat. 

Dep. 

Lat. 

Lat. 

Dep. 

Lat. 

81] 

Oeg. 

80|  Deg. 

801 

Deg. 

80i  Deg. 

T 11 A  V  E  KS  K    T  A  BL  F. 


21 


1 

51 

9  Beg.       1 

1 
9i  Deg. 

H  Deg. 

n  Deg. 

"51 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

60.37 

7.98 

50.34 

8.20 

50.30 

8.42 

50.26 

8.64 

52 

51.36 

8.13 

51.32 

8.36 

51.29 

8.58 

51.25 

8.81 

52 

53 

52.35 

8.29 

52.31 

8.52 

52.27 

8.75 

52.23 

8.98 

53 

54 

.53.34 

8.45 

53.30 

8.68 

53.26 

8.91 

53.22 

9.14 

54 

55 

54.32 

8.60 

54.28 

8.84 

54.25 

9.08 

54.21 

9.31 

55 

56 

55.31 

8.76 

55.27 

9.00 

55.23 

9.24 

55.19 

9.48 

56 

67 

56.30  1    8.92 

56.26 

9.16 

56.22 

9.41 

56.18 

9.65 

57 

58 

57.29  1    9.07 

57.25      9.32 

57.20 

9.57 

57.16 

9.82 

58 

69 

58.27      9.23 

58.23      9.48 

58.19 

9.74 

58.15 

9.99 

59 

60 
61 

59.26      9.39 

59.22 

9.64 
9.81 

59.18 

9.90 

59.13 

10.16 

60 
6] 

60.25      9. .54 

60.21 

60.16 

10.07 

60.12 

10.33 

62 

61.24      9.70 

61.19 

9.97 

61.15 

10.23 

61.10 

10.50 

62 

63 

62.22      9.86 

62.18 

10.13 

62.14 

10.40 

62.09 

10.67 

63 

64 

63.21 

10.01 

63.17 

10.29 

63.12 

10.56 

63.08 

10.84 

64 

65 

64.20 

10.17 

64.15 

10.45 

64.11 

10.73 

64.06 

11.01 

65 

66 

65.19 

10.32 

65.14 

10.61 

65.09 

10.89 

65.05 

11.18 

66 

67 

66.18 

10.48 

66.13 

10.77 

66.08 

11.06 

66.03 

11.35 

67 

68 

67.16 

10.64 

67.12 

10.93 

67.97 

11.22 

67.02 

11.52 

68 

69 

68.15 

10.79 

68.10 

11.09 

68.05 

11.39 

68.00 

11.69 

69 

70 
71 

69.14 

10.95 

69.09 

11.25 

69.04 

11.55 

68.99 
69.97 

11.85 
12.02 

70 

71 

70.13 

11.11 

70.08 

11.41 

70.03 

11.72 

72 

71.11 

11.26 

71.06 

11.57 

71.01 

11.88 

70.96 

12.19 

72 

73 

72.10 

11.42 

72.05 

11.73 

72.00 

12.05 

71.95 

12.36 

73 

74 

73.09 

11.58 

73.04 

11.89 

72.99 

12.21 

72.93 

12.53 

74 

75 

74.08 

11.73 

74.02 

12.06 

73.97 

12.38 

73.92 

12.70 

75 

76 

75.06 

11.89 

75.01 

12.22 

74.96 

12.54 

74.90 

12.87 

76 

77 

76.05 

12.05 

76.00 

12.38 

75.94 

12.71 

75.89 

13.04 

77 

78 

77.04 

12.20 

76.99 

12.54 

76.93 

12.87 

76.87 

13.21 

78 

79 

78.03 

12.36 

77.97 

12.70 

77.92 

13.04 

77.86 

13.38 

79 

80 
81 

79.02 

12.51 

78.96 

12.86 

78.90 

13.20 

178.84 
179.83 

13.55 

80 
81 

80.00 

12.67 

79.95 

13.02 

79.89 

13.37 

13.72 

82 

80.99 

12.83 

80.93 

13.18 

80.88 

13.53 

80.82 

13.89 

82 

83 

81.98 

12.98 

81.92 

13.34 

81.86 

13.70 

181.80 

14.06 

83 

84 

82.97 

13.14 

82.91 

13.50 

82.85 

13.86 

82.79 

14.23 

84 

85 

83.95 

13.30 

83.89 

13.66 

83.83 

14.03 

83.77 

14.39 

85 

86 

84.94 

13.45 

84.88 

13.82 

84.82 

14.19 

84.76 

14.. 56 

86 

87 

85.93 

13.61 

85.87 

13.98 

85.81 

14.36 

185.74 

14.73 

87 

88 

86.92 

13.77 

86.86 

14.15 

86.79 

14.. 52 

j 86.73 

14.90 

88 

89 

87.90 

13.92 

87.84 

14.31 

87.78 

14.69 

87.71 

15.07 

89 

90 
91 

88.89 

14.08 

88.83 

14.47 

88.77 

14.85 

88.70 

15.24 

90 
91 

89.88 

14.24 

89.82 

14.63 

89.75 

15.02 

89.69 

15.41 

92 

90.87 

14.39 

90.80 

14.79 

90.74 

15.18 

90.67 

15.58 

92 

93 

91.86 

14.55 

91.79 

14.95 

91.72 

15.35 

91.66 

15.75 

93 

94 

92.84 

14.70 

92.78 

15.11 

92.71 

15.51 

92.64 

15.92 

94 

95 

93.83 

14.86 

93.76 

15.27 

93.70 

15.68 

93.63 

16.09 

95 

96 

94.82 

15.02 

94.75 

15.43 

94.68 

15.84 

94.61 

16.26 

96 

97 

95.81 

15.17 

95.74 

15.59 

95.67 

16.01 

95.60 

16.43 

97 

98 

96.79 

15.33 

96.73 

15.75 

96.66 

16.17 

96.58 

16.60 

98 

99 

97.78 

15.49 

97.71 

15.91 

97.64 

16.34 

97.57 

16.77 

99 

100 

8 

B 
d 

Q 

98.77 

15.64 

98.70 

16.07 

98.63 

16.50 

98.56 

16.93 

100 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

81  Deg. 

80J  Deg. 

80^  Deg. 

80i  Deg. 

22 


TRAVERSE    TABLE. 


ft 

10  Deg. 

104  Deg. 

\0i 

Deg. 

m  Deg. 

a 
J. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

0.98 

0.17 

0.98 

0.18 

0.98 

0.18 

0.98 

0.19 

2 

1.97 

0.35 

1.97 

0.30 

1.97 

0.36 

1.96 

0.37 

2 

3 

2.95 

0.52 

2.95 

0.53 

2.96 

0.55 

2.95 

0  56 

3 

4 

3.94 

0.69 

3.94 

0.71 

3.93 

0.73 

3.93 

0.75 

4 

5 

4.92 

0.87 

4.92 

0.89 

4.92 

0.91 

4.91 

0.93 

5 

6 

5.91 

1.04 

5.90 

1.07 

5.90 

1.09 

5.89 

],12 

6 

7 

6.89 

1.22 

6.89 

1.25 

6.88 

1.28 

6.88 

1.31 

7 

8 

7.88 

1.39 

7.87 

1.42 

7.87 

1.46 

7.86 

1.49 

8 

9 

8.86 

1.56 

8.86 

1.60 

8.85 

1.64 

8.84 

1.68 

9 

10 
11 

9.85 

1.74 

9.84 

1.78 

9.83 

1.82 

9.82 

1.87 

10 
11 

10.83 

1.91 

10.82 

1.96 

10.82 

2.00 

10.81 

2.05 

12 

11.82 

2.08 

11.81 

2.14 

11.80 

2.19 

11.79 

2.24 

12 

13 

12.80 

2.26 

12.79 

2.31 

12.78 

2.37 

12.77 

2.42 

13 

14 

13.79 

2.43 

13.78 

2.49 

13.77 

2.55 

13.75 

2.61 

14 

15 

14.77 

2.60 

14.76 

2.67 

14.75 

2.73 

14.74 

2.80 

15 

16 

15.76 

2.78 

15.74 

2.85 

15.73 

2.92 

15.72 

2.98 

16 

17 

16.74 

2.95 

16.73 

3.03 

16.72 

3.10 

16.70 

3.)7 

17 

18 

17.73 

3.13 

l'7.71 

3.20 

17.70 

3.28 

17.68 

3.36 

18 

19 

18.71 

3.30 

18.70 

3.38 

18.68 

3.46 

18.67 

3.54 

19 

20 
21 

19.70 

3.47 

19.68 

3.56 

19.67 

3.64 

19.65 

3.73 

20 
21 

20.68 

3.65 

20.66 

3.74 

20.65 

3.83 

20.63 

3.92 

22 

21.67 

3.82 

21.65 

3.91 

21.63 

4.01 

21.61 

4.10 

22 

23 

22.65 

3.99 

22.63 

4.09 

22.61 

4.19 

22.60 

4.29 

23 

24 

23.64 

4.17 

23.62 

4.27 

23.60 

4.37 

23.58 

4.48 

24 

25 

24.62 

4.34 

24.60 

4.45 

24.58 

4.56 

24.56 

4.66 

25 

26 

25.61 

4.51 

25.59 

4.63 

25.56 

4.74 

25.. 54 

4.85 

26 

27 

26.59 

4.69 

26.57 

4.80 

26.55 

4.92 

26.53 

5.04 

27 

28 

27.57 

4.86 

27.55 

4.98 

27.53 

5.10 

27.51 

5.22 

28 

29 

28.56 

5.04 

28.54 

5.16 

28.51 

5.28 

28.49 

5.41 

29 

30 
31 

29.54 

5.21 

29.52 

5.34 

29.50 

5.47 

29.47 

5.60 

30 
31 

30.53 

5.38 

30.51 

5.52) 

30.48 

5.65 

30.46 

5.78 

32 

31.51 

5.56 

31.49 

5.69 

31.46 

5.83 

31.44 

5.97 

32 

33 

32.50 

5.73 

32.47 

5.87 

32.45 

6.01 

32.42 

6.16 

33 

34 

33.48 

5.90 

33.46 

6.05 

33.43 

6.20 

33.40 

6.34 

34 

35 

34.47 

6.08 

34.44 

6.23 

34.41 

6.38 

34.39 

6.53 

35 

36 

35.45 

6.25 

35.43 

6.41 

35.40 

6.56 

35.37 

6.71 

36 

37 

36.44 

6.42 

36.41 

6.58 

36.38 

6.74 

36.35 

6.90 

37 

38 

37.42 

6.60 

37.39 

6.76 

37.36 

6.92 

37.33 

7.09 

38 

39 

38.41 

6.77 

38.38 

6.94 

38.35 

7.11 

38.32 

7.27 

39 

40 
41 

39.39 

6.95 

39.36 

7.12 

39.33 

7.29 

39.30 

7.46 

40 

41 

40.38 

7.12 

40.35 

7.30 

40.31 

7.47 

40.28 

7.65 

42 

41.36 

7.29 

41.33 

7.47 

41.30 

7.65 

41.26 

7.83 

42 

43 

42.35 

7.47 

42.31 

7.65 

42.28 

7.84 

42.25 

8.02 

43 

44 

43.33 

7.64 

43.30 

7.83 

43.26 

8.02 

43.23 

8.21 

44 

45 

44.32 

7.81 

44.28 

8.01 

44.25 

8.20 

44.21 

8.39 

45 

46 

45.30 

7.99 

45.27 

8.19 

45.23 

8.38 

45.19 

8.58 

46 

47 

46.29 

8.16 

46.25 

8.36 

46.21 

8.57 

46.18 

8.77 

47 

48 

47.27 

8.34 

47.23 

8.54 

47.20 

8.75 

47.16 

8.95 

48 

49 

48.26 

8.51 

48.22 

8.72 

48.18 

8.93 

48.14 

9.14 

49 

50 

8 
1 

.2 

49.24 

8.68 

49.20 

8.90 

49.16 

9.11 

49.12 

9.33 

50 

"co 

Q 

Dep. 

T.at. 

Dep. 

79! 

Lat. 
Deg. 

Dep. 

Lat. 

Dep. 

Lat. 

80  Deg. 

791 

Deg. 

794  Deg. 

TKAVEKSE    TARLE. 


23 


51 

10  Deg. 

lOi  Deg. 

10^  Deg. 

101  Deg. 



O 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

3 
O 

o 
~5l 

50.23 

8.86 

50.19 

9.08 

50.15 

9.29 

.50.10 

9.51 

52 

51.21 

9.03 

51.17 

9.25 

51.13 

9.48 

51.09 

9.70 

52 

53 

52.19 

9.20 

52.15 

9.43 

.52.11 

9.66 

52.07 

9.89 

53 

54 

53.18 

9.38 

53.14 

9.61 

53.10 

9.84 

53.05 

10.07 

54 

55 

54.16 

9.55 

54.12 

9.79 

54.08 

10.02 

54.03 

10.26 

55 

56 

55.15 

9.72 

55.11 

9.96 

55.06 

10.21 

55.02 

10.45 

56 

57 

56.13 

9.90 

56.09 

10.14 

56.05 

10.39 

56.00 

10.63 

57 

58 

57.12 

10.07 

57.07 

10.32 

57.03 

10.57 

56.98 

10.82 

58 

59 

58.10 

10.25 

58.06 

10.50 

58.01 

10.75 

57.96 

11.00 

59 

60 
61 

59.09 

10.42 

59.04 

10.68 

59.00 

10.93 

58.95 

11.19 

60 
61 

60.07 

10.59 

60.03 

10.85 

59.98 

11.12 

59.93 

11.38 

62 

61.06 

10.77 

61.01 

11.03 

60.96 

11.30 

60.91 

11.56 

62 

63 

62.04 

10.94 

61.99 

11.21 

61.95 

11.48 

61.89 

11.75 

63 

64 

63.03 

11.11 

62.98 

11.39 

62.93 

11.66 

62.88 

11.94 

64 

65 

64.01 

11.29 

63.96 

11.57 

63.91 

11.85 

63.86 

12.12 

65 

66 

65.00 

11.46 

64.95 

11.74 

64.89 

12.03 

64.84 

12.31 

66 

67 

65.98 

11.63 

65.93 

11.92 

65.88 

12.21 

65.82 

12.50 

67 

68 

66.97 

11.81 

66.91 

12.10 

66.86 

12.39 

66.81 

12.68 

68 

69 

67.95 

11.98 

67.90 

12.28 

67.84 

12.57 

67.79 

12.87 

69 

70 
71 

68.94 

12.16 

68.88 

12.46 

68.83 

12.76 

68.77 

13.06 

70 

71 

69.92 

12.33 

69.87 

12.63 

69.81 

12.94 

69.75 

13.24 

72 

70.91 

12.50 

70.85 

12.81 

70.79 

13.12 

70.74 

13.43 

72 

73 

71.89 

12.68 

71.83 

12.99 

71.78 

13.30 

71.72 

13.62 

73 

74 

72.88 

12.85 

72.82 

13.17 

72.76 

13.49 

72.70 

13.80 

74 

75 

73.86 

13.02 

73.80 

13.35 

73.74 

13.67 

73.68 

13.99 

75 

76 

74.85 

13.20 

74.79 

13.52 

74.73 

13.85 

74.67 

14.18 

76 

77 

75.83 

13.37 

75.77 

13.70 

75.71 

14.03 

75.65 

14.36 

77 

78 

76.82 

13.54 

76.76 

13.88 

76.69 

14.21 

76.63 

14.55 

78 

79 

77.80 

13.72 

77.74 

14.06 

77.68 

14.40 

77.61 

14.74 

^? 

80 
81 

78.78 

13.89 

78.72 

14.24 

78.66 

14.. 58 

78.60 

14.92 

80 
81 

79.77 

14.07 

79.71 

14.41 

79.64 

14.76 

79.58 

15.11 

82 

80.75 

14.24 

80.69 

14.59 

80.63 

14.94 

80.50 

15.29 

82 

83 

81.74 

14.41 

81.68 

14.77 

81.61 

15.13 

81.54 

15.48 

83 

84 

82.72 

14.59 

82.66 

14.95 

82.59 

15.31 

82.53 

15.67 

84 

85 

83.71 

14.76 

83.64 

15.13 

83.58 

15.49 

83.51 

15.85 

85 

86 

84.69 

14.93 

84.63 

15.30 

84.56 

15.67 

84.49 

16.04 

86 

87 

85.68 

15.11 

85.61 

15.48 

85.54 

15.85 

85.47 

16.23 

87 

88 

86.66 

15.28 

86.60 

15.66 

86.53 

16.04 

83.46 

16.41 

88 

89 

87.65 

15.45 

87.58 

15.84 

87.51 

16.22 

87.44 

16.60 

89 

90 

88.63 

15.63 

88.56 

16.01 

88.49 

16.40 

88.42 

16.79 

90 

91 

89.62 

15.80 

89.55 

16.19 

89.48 

16.58 

89.40 

16.97 

92 

90.60 

15.98 

90.53 

16.37 

90.46 

16.77 

90.39 

17-16 

92 

93 

91.59 

16.15 

91.52 

16.55 

91.44 

16.95 

91.37 

17.35 

93 

94 

92.57 

16.32 

92.50 

16.73 

92.43 

17.13 

92.35 

17.53 

94 

95 

93.56- 

16.50 

93.48 

16.90 

93.41 

17.31 

93.33 

17.72 

95 

96 

94.54    16.67 

94,47 

17.08 

94.39 

17.49 

94.32 

17.91 

96 

97 

95.53    16.84 

95.45 

17.26 

95.38 

17.68 

95.30 

18.09 

97 

98 

96.51    17.02 

96.44 

17.44 

96.36 

17.86 

96.28 

18.28 

98 

99 

97.50    17.19 

97.42 

17.62 

97.34 

18.04 

97.26 

18.47 

99 

100 

•S 

98.48    17.36 

98.40 

17.79 

98.33 

18.22 

98.25 

18.65 

100 

s 

p 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

80  Deg. 

791  Deg. 

791  Deg. 

79i  Deg. 

24 


TRAVERSK    TABLE. 


o 

5' 

a 
P 

11  Deg. 

lU  Deg. 

Ui 

Deg. 

Ill  Deg. 

K 

p 

Lat. 

Dep. 
0.19 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

1 

0.98 

0.98 

0.20 

0.98 

0.20 

0.98 

0.20 

1 

2 

1.96 

0..38 

1.96 

0.39 

1.90 

0.40 

1.96 

0.41 

2 

3 

2.94 

0.57 

2.94 

0.59 

2.94 

0.60 

2.94 

0.61 

3 

4 

3.93 

0.76 

3.92 

0.78 

3.92 

0.80 

3.92 

9.82 

4 

5   4.91 

0.95 

4.90 

0.98 

4.90 

1.00 

4.90 

1.02 

5 

6 

5.89 

1.14 

5.88 

1.17 

5.88 

1.20 

5.87 

1.22 

6 

7 

6.87 

1.34 

6.87 

1.37 

6.86 

1.40 

6.85 

1.43 

7 

8 

7.85 

1.53 

7.85 

1.56 

7.84 

1.59 

7.83 

1.63 

8 

9 

8.83 

1.72 

8.83 

1.76 

8.82 

1.79 

8.81 

1.83 

9 

10 

9.82 

1.91 

9.81 

1.95 

9.80 

1.99 

9.79 

2.04 

10 

11 

10.80 

2.10 

10.79 

2.15 

10.78 

2.19 

10.77 

2.24 

11 

12 

11.78 

2.29 

11.77 

2.34 

11.7-6 

2.39 

11.75 

2.44 

12 

13 

12.76 

2.48 

12.75 

2.54 

12.74 

2.59 

12.73 

2.65 

13 

14 

13.74 

2.67 

13.73 

2.73 

13.72 

2.79 

13.71 

2.85 

14 

15 

14.72 

2.86 

14.71 

2.93 

14.70 

2.99 

14.69 

3.06 

15 

16 

15.71 

3.05 

15.69 

3.12 

15.68 

3.19 

15.66 

3.26 

16 

17 

16.69 

3.24 

16.67 

3.32 

16.66 

3.39 

16.64 

3.46 

17 

18 

17.67 

3.43 

17.65 

3.51 

17.64 

3.59 

17.62 

3.66 

18 

19 

18.65 

3.63 

18.63 

3.71 

18.62 

3.79 

18.60 

3.87 

19 

20  1  19.63 

3.82 

19.62 

3.90 

19.60 

3.99 

19.58 

4.07 

20 

21 

20.61 

4.01 

20.60 

4.10 

20.58 

4.19 

20.. 56 

4.28 

21 

22 

21.60 

4.20 

21.58 

4.29 

21.56 

4.39 

21.54 

4.48 

22 

23 

22.58 

4.39 

22.56 

4.49 

22.54 

4.59 

22.52 

4.68 

23 

24 

23.56 

4.58 

23.54 

4.68 

23.52 

4.78! 

23.50 

4.89 

24 

25 

24.54 

4.77 

24.52 

4.88 

24.50 

4.98  i 

24.48 

5.09 

25 

26 

25.52 

4.96 

25.50 

5.07 

25.48 

5.18 

25.46 

5.30 

26 

27 

20.50 

5.15 

26.48 

5.27 

26.46 

5.38 

26.43 

5.50 

27 

28 

27.49 

5.34 

27.46 

5.46 

27.44 

5.58 

27.41 

5.70 

28 

29 

28.47 

5.53 

28.44 

5.66 

28.42 

5.78 

28.39 

5.91 

29 

30 

29.45 

5.72 

29.42 

5.85 

29.40 

5.98 

29.37 

6.11 

30 

31 

30.43 

5.92 

30.40 

6.05 

30.38 

6.18 

30.35 

6.31 

31 

32 

31.41 

6.11 

31.39 

6.24 

31.36 

6.38 

31.33 

6.52 

32 

33 

32.39 

6-30 

32.37 

6.44 

32.34 

6.58 

32.31 

6.72 

33 

34 

33.38 

6.49 

33.35 

6.63 

33.32 

6.78 

33.29 

6.92 

34 

35 

34.36 

6.68 

34.33 

6.83 

34.30 

6.98 

34.27 

7.13 

35 

36 

35.34 

6.87 

35.31 

7.02 

35.28 

7.18 

35.25 

7.33 

36 

37 

36.32 

7.06 

36.29 

7.22 

36.26 

7.38 

36.22 

7.53 

37 

38 

37.30 

7.25 

37.27 

7.41 

37.24 

7.58 

37.20 

7.74 

38 

39 

38.28 

7.44 

38.25 

7.61 

38.22 

7.78 

.38.18 

7.94 

39 

40 

39.27 

7.63 

39.23 

7.80 

39.20 

7.97 

39.18 

8.15 

40 

41 

40.25 

7.82 

40.21 

8.00 

40.18 

8.17 

40.14 

8.35 

41 

42 

41  23 

8.01 

41.19 

8.19 

41.16 

8.37 

41.12 

8.55 

42 

43 

42.21 

8.20 

42.17 

8.39 

42.14 

8.57 

42.10 

8.76 

43 

44 

43.19 

8.40 

43.15 

8.58 

43.12 

8.77 

43.08 

8.96 

44 

45 

44.17 

8.59 

44.14 

8.78 

44.10 

8.97 

44.06 

9.16 

45 

46 

45.15 

8.78 

45.12 

8.97 

45.08 

9.17 

45.04 

9.37 

46 

47 

46.14 

8.97 

46.10 

9.17 

46.06 

9.37 

46.02 

9.57 

47 

48 

47.12 

9.16 

47.08 

9.36 

47.04 

9.57 

46.99 

9.78 

48 

49 

48.10 

9.35 

48.06 

9.56 

48.02 

9.77 

47.97 

9.98 

49 

Jl 

49.08 

9.54 

49.04 

Lat. 

49.00 

9.97 

48.95 

10.18 

50 

.2 

i 

a 

(0 

Q 

Dep. 

1 

Lat. 

Dtjp. 

Dep. 

Lat. 

Dep. 

Lat. 

1 
1 

79 

Deg. 

7P.|  De^. 

"Sx 

Deg. 

78J  Deg. 

TKAVtRSi!    TA^LS* 


29 


n 
a 

"51 

11  Deg. 

lU  Degr. 

IH  Deg. 

111  Deg. 

i 

1 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

50.06 

9.73 

50.02 

9.95 

49.98 

10.17 

49.93 

10.39 

51 

52 

51.04 

9.92 

51.00 

10.14 

50.96 

10.37 

50.91 

10,59 

52 

53 

52.03 

10.11 

51.98 

10.34 

51.94 

10.57 

51.89 

10.79 

53 

51 

53.01 

10.30 

52.96 

10.53 

52.92 

10.77 

52.87 

11.00 

54 

65 

53.99 

10.49 

53.94 

10.73 

53.90 

10.97 

53.85 

11.20 

55 

56 

54.97 

10.69 

54.92 

10.93 

54.88 

11.16 

54.83 

11.40 

56 

67 

55.95 

10.88 

55.90 

11.12 

55.86 

11.36 

55.81 

11.61 

57 

68 

56.93 

11.07 

56.89 

11.32 

56.84 

11.56 

56.78 

11.81 

58 

59 

57.92 

11.26 

57.87 

11.51 

57.82 

11.76 

57.76 

12.01 

59 

60 
61 

58.90 

11.45 

58.85 

11.71 

58.80 

11.96 

58.74 

12.22 

60 

59.88 

11.64 

59.83 

11.90 

59.78 

12.16 

59.72 

12.42 

61 

63 

60.86 

11.83 

60.81 

12.10 

60.76 

12.36 

60.70 

12.63 

62 

63 

61.84 

12.02 

61.79 

12.29 

61.74 

12.56 

61.68 

12.83 

63 

64 

62.82 

12.21 

62.77 

12.49 

62.72 

12.76 

1  62.66 

13.03 

64 

65 

63.81 

12.40 

63.75 

12.68 

63.70 

12.96 

1  63.64 

13.24 

65 

66 

64.79 

12.59 

64.73 

12.88 

64.68 

13.16 

64.62 

13.4^1 

66 

67 

65.77 

12.78 

65.71 

13.07 

65.66 

13.36 

65.60 

13.64 

67 

68 

66.75 

12.98 

66.69 

13.27 

66.63 

13.56 

66.68 

13.85 

68 

69 

67.73 

13.17 

67.67 

13.46 

67.61 

13.76 

67.55 

14.05 

69 

70 
71 

68.71 

13.36 

68.66 

13.66 

63.59 

13.96 

68.53 

14.25 

70 

69.70 

13.55 

69.64 

13.85 

69.57 

14.16 

69.51 

14.46 

71 

72 

70.68 

13.74 

70.62 

14.05 

70.55 

14.35 

70.49 

14.66 

72 

73 

71.66 

13.93 

71.60 

14.24 

71.53 

'4.55 

71.47 

14.87 

73 

74 

72.64 

14.12 

72.58 

14.44 

72.51 

14.75 

72.45 

15.07 

74 

75 

73.62 

14.31 

73.56 

14.63 

73.49 

14.95 

73.43 

15.27 

75 

76 

74.60 

14.50 

74.54 

14.83 

74.47 

15.15 

74.41 

15.48 

76 

77 

75.59 

14.69 

75.52 

15.02 

75.45 

15.35 

75  39 

15.68 

77 

78 

76.57 

14.88 

76.50 

15.22 

76.43 

15.55 

76.37 

15.88 

78 

79 

77.55 

15.07 

77.48 

15.41 

77.41 

15.75 

77.34 

16.09 

79 

80 
81 

78.53 

15.26 

78.48 

15.61 

78.39 

15.95 

78.32 

16.29 

80 

79.51 

15.46 

79.44 

15.80 

79.37 

16.15 

79.30 

16.49 

81 

82 

80.49 

15.65 

80.42 

16.00 

80.35 

16.35 

80.28 

16.70 

82 

83 

81.48 

15.84 

81.41 

16.19 

81.33 

16.55 

81.36 

16.90 

83 

84 

82.46 

16.03 

82.39 

16.39 

82.31 

16.75 

82.24 

17.11 

84 

85 

83.44 

16.22 

83.37 

16.58 

83.29 

16.95 

83.22 

17.31 

85 

86 

84.42 

16.41 

84.35 

16.78 

84.27 

17.15 

84.20 

17.51 

86 

87 

85.40 

16.60 

85.33 

16.97 

85.25 

17.35 

85.18 

17.72 

87 

88 

86.38 

16.79 

86.31 

17.17 

86.23 

17.54 

86.16 

17.92 

88 

89 

87.36 

16.98 

87.29 

17.36 

87.21 1 

17.74 

87.14 

18.12 

89 

90 
91 

88.35 

17.17 

88.27 

17.56 

88.19 

17.94 

88.11 

18.33 

90 

89.33 

17.36 

89.25 

17.75 

89.17 

18.14 

89.09 

18.53 

91 

92 

90.31 

17.55 

90.23 

17.95 

90.15 

18.34 

90.07 

18.74 

92 

93 

91.29 

17.75 

91.21 

18.14 

91.13 

18.54 

91.05 

18.94 

93 

94 

92.27 

17.94 

92.19 

18.34 

92.11 

18.74 

92.03 

19.14 

94 

95 

93.25 

18.13 

93.17 

18.53 

93.09 

18.94 

93.01 

19.35 

95 

96 

94.24 

18.32 

94.16 

18.73 

94.07 

19.14 

93.99 

19.55 

96 

97 

95.22 

18.51 

95.14 

18.92 

95.05 

19.34 

94.97 

19.75 

97 

98 

96.20 

18.70 

96.12 

19.12 

96.03 

19.54 

95.95 

19.96 

98 

99 

97.18 

18.89 

97.10 

19.31 

97.01 

19.74 

96.93 

20.16 

99 

100 

98.16 

19.08 

98.08 

19.51 

97.99 

19.94 

97.90 

20.36 

100 

Dep. 

Lat. 

Dep. 

Lat. 

Dep.      Lat. 

Dep. 

Lat. 

S 

s 

■(0 

79  Deg. 

781  Deg. 

78|  Deg. 

1 

78i  Deg. 

ts 


TRAVERSE   TABLE. 


1 

p 

12  Deg 

12i  Deg. 

12i  Deg. 

1 
12|  Deg. 

Lai. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat.  !  Dep.  j 

3 

1 

0.98 

0.21 

0.98 

0.21 

0.98 

0.22 

0.98 

0.22 

1 

2 

1.96 

0.42 

1.95 

0.42 

1.95 

0.43 

1.95 

0.44 

2 

3 

2.93 

0.62 

2.93 

0.64 

2.93 

0.65 

2.93 

0.66 

3 

4 

3.91 

0.83 

3.91 

0.85 

3.91 

0.87 

3.90 

0.88 

4 

5 

4.89 

1.04 

4.89 

1.06 

4.88 

1.08 

4.88 

1.10 

5 

6 

5.87 

1.25 

5.86 

1.27 

5.86 

1.30 

5.85 

1.32 

6 

7 

6.85 

1.46 

6.84 

1.49 

6.83 

1.52 

6.83 

1.54 

7 

8 

7.83 

1.66 

7.82 

1.70 

7.81 

1.73 

7.80 

1.77 

8 

9 

8.80 

1.87 

8.80 

1.91 

8.79 

1.95 

8.78 

1.99 

9 

10 
11 

9.78 

2.08 

9.77 

2.12 
2.33 

9.76 

2.16 

9.75 

2.21 

10 

10.76 

2.29 

10.75 

10.74 

2.38 

10.73 

2.43 

11 

12 

11.74 

2.49 

11.73 

2.55 

11.72 

2.60 

11.70 

2.65 

13 

13 

12.72 

2.70 

12.70 

2.76 

12.69 

2.81 

12.68 

2.87 

13 

14 

13.69 

2.91 

13.68 

2.97 

13.67 

3.03 

13.65 

3.09 

14 

15 

14.67 

3.12 

14.66 

3.18 

14.64 

3.25 

14.63 

3.31 

15 

16 

15.65 

3.33 

15.64 

3.39 

15.62 

3.46 

15.61 

3.53 

16 

17 

16.63 

3.. 53 

16.61 

3.61 

16.60 

3.68 

16.58 

3.75 

17 

18 

17.61 

3.74 

17.59 

3.82 

17.. 57 

3.90 

17.56 

3.97 

18 

19 

18.. 58 

3.95 

18.57 

4.03 

18.55 

4.11 

18.53 

4.19 

19 

20 
21 

19.56 

4.16 

19.54 

4.24 

19.53 

4.33 

19.51 

4.41 

20 

20.54 

4.37 

20.. 52 

4.46 

20.50 

4.55 

20.48 

4.63 

21 

22 

21.52 

4.57 

21.50 

4.67 

21.48 

4.76 

21.46 

4.86 

%% 

23 

22.50 

4.78 

22.48 

4.88 

22.45 

4.98 

22.43 

5.08 

23 

24 

23.48 

4.99 

23.45 

5.09 

23.43 

5.19 

23.41 

5.30 

24 

25 

24.45 

5.20 

24.43 

5.30 

24.41 

5.41 

24.38 

5.52 

25 

26 

25.43 

5.41 

25.41 

5.52 

25.33 

5.63 

25.36 

5.74 

26 

27 

26.41 

5.61 

26.39 

5.73 

26.36 

5.84 

26.33 

5.96 

27 

28 

27.39 

5.82 

27.36 

5.94 

27.34 

6.06 

27.31 

6.18 

28 

29 

28.37 

6.03 

28.34 

6.15 

28.31 

6.28 

28.28 

6.40 

29 

30 

29.34 

6.24 

29.32 

6.. 37 

29.29 

6.49 

29.26 

6.62 

30 

31 

30.32 

6.45 

30.29 

6.58 

30.27 

6.71 

30.24 

6.84 

31 

32 

31. .30 

6.65 

31.27 

6.79 

31.24 

6.93 

31.21 

7.06 

32 

33 

32.28 

6.86 

32.25 

7.00 

32.22 

7.14 

32.19 

7.28 

33 

34 

33.26 

7.07 

33.23 

7.21 

33.19 

7.36 

33.16 

7.50 

34 

35 

34.24 

7.28 

34.20 

7.43 

34.17 

7.58 

34.14 

7.72 

35 

36 

35.21 

7.48 

35.18 

7.64 

35.15 

7.79 

35.11 

7.95 

36 

5  37 

36.19 

7.69 

36.16 

7.85 

36.12 

8.01 

36.09 

8.17 

37 

38 

37.17 

7.90 

37.13 

8.06 

37.10 

8.22 

37.06 

8.39 

38 

39 

38.15 

8.11 

38.11 

8.27 

38.08 

8.44 

38.04 

8.61 

39 

40 
41 

39.13 

8.32 

39.09 

8.49 
8.70 

39.05 

8.66 

39.01 

8.83 

40 

40.10 

8.52 

40.07 

40.03 

8.87 

39.99 

9.05 

41 

42 

41.08 

8.73 

41.04 

8.91 

41.00 

9.09 

40.96 

9.27 

42 

43 

42.06 

8.94 

4?.  02 

9.12 

41.98 

9.31 

41.94 

9.49 

43 

44 

43.04 

9.15 

43.00 

9.34 

42.96 

9., 52 

42.92 

9.71 

44 

45  144.02 

9.36 

43.98 

9.55 

43.93 

9.74 

43.89 

9.93 

45 

46  144.99 

9.56 

44.95 

9.76 

44.91 

9.96  ii44.87 

10.15 

46 

47  145.97 

9.77 

45.93 

9.97 

45.89 

10.17  ij  45.84 

10.37 

47 

48  i 46.95 

9.98 

46.91 

10.18 

46.86 

10.39  46.82 

10.. 59 

48 

49  47.93 

10.19 

47.88 

10.40 

47.84 

10.61  ; 47.79 

10.81 

49 

50 

i 

s 

.2 
Q 

48.91 

10.40 

48.86 

10.61 

48.81 
Dep. 

10.82 
Lat. 

i 48.77 

11.03 

50 

6 
o 

a 

Dep. 

Lat. 

Dep. 

L:it. 

1  Dep. 

Lat. 

78  Deg 

77f 

Deg. 

771 

Deg.   '   77 J  Deg. 

TRAVERSE    TABLE. 


27 


9. 

o 
~5l 

12  Deg. 

12i  Deg. 

12A  Deg. 

12|  Deg. 

r 

Lat. 
49.89 

Dep. 
To  ".GO" 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

~5i 

49.84 

16.82 

49.79 

11.04 

49.74 

11.26 

52 

50.86 

10.81 

50.82 

11.03 

50.77 

11.25 

50.72 

11.48 

62 

53 

51.84 

11.02 

51.79 

11.25 

51.74 

11.47 

51.69 

11.70 

53 

54 

52.82 

11.23 

52.77 

11.46 

52.72 

11.69 

52.67 

11.92 

54 

55 

53.80 

11.44 

.53.75 

^1.67 

53.70 

11.90 

53.64 

12.14 

55 

56 

54.78 

11.64 

54.72 

I?    88 

54.67 

12.12 

54.62 

12.36 

50 

57 

55.75 

11.85 

55.70 

12.09 

55.65 

12.34 

55.59 

12.. 58 

57 

58 

56.73 

12.06 

56.68 

12.31 

56.63 

12.55 

56.57 

12.80 

58 

59 

57.71 

12.27 

57.66 

12.52 

57.60 

12.77 

57.55 

13.02  ;   59 

60 
61 

58.69 

12.47 

58.63 

12.73 

58.58 

12.99 

.58.52 

13.24  1   60 

59.67 

12.68 

59.61 

12.94 

159.55 

13.20 

59.50 

13.46  1   61 

62 

60.65 

12.89 

60.59 

13.16 

60.53 

13.42 

60.47 

13.68 

02 

63 

61.62 

13.10 

61.57 

13.37 

61.51 

13.64 

61.45 

13.90 

63 

64 

62.60 

13.31 

62.54 

13.58 

62.48 

13.85 

62.42 

14.12 

64 

65 

63.58 

13.51 

63.. 52 

13.79 

63.46 

14.07 

63.40 

14.35 

65 

66 

£4.56 

13.72 

64.50 

14.00 

64.44 

14.29 

64.37 

14.57 

66 

67 

65.54 

13.93 

65.47 

14.22 

65.41 

14.50 

65.35 

14.79 

67 

68 

66.51 

14.14 

66.45 

14.43 

66.39 

14.72 

66.32 

15.01 

68 

69 

67.49 

14.35 

67.43 

14.64 

67.36 

14.93 

67.30 

15.23 

69 

70 

71 

68.47 

14.55 

68.41 

14.85 

68.34 

15.15 

68.27 

15.45 

70 

71 

69.45 

14.76 

69.38 

15.06 

69.32 

15.. 37 

69.25 

15.67 

72 

70.43 

14.97 

70.36 

15.28 

70.29 

15.58 

70.22 

15.89 

72 

73 

71.40 

15.18 

71.34 

15.49 

71.27 

15.80 

71.20 

16.11 

73 

74 

72.38 

15.39 

72.32 

15.70 

72.25 

16.02 

72.18 

16.33 

74 

75 

73.36 

15.59 

73.29 

15.91 

73.22 

16.23 

73.15 

16.55 

75 

76 

74.34 

15.80 

74.27 

16.13 

74.20 

16.45 

74.13 

16.77 

76 

77 

75.32 

16.01 

75.25 

16.34 

75.17 

16.67 

75.10 

16.99 

77 

78 

76.30 

16.22 

76.22 

16.. 55 

76.15 

16.88 

76.08 

17.21 

78 

79 

77.27 

16.43 

77.20 

16.76 

77.13 

17.10 

77.05 

17.44 

79 

80 
81 

78.25 

16.63 

78.18 

16.97 
17.19 

78.10 

17.32 

78.03 

17.66 

80 

79.23 

16.84 

79.16 

79.08 

17.. 53 

79.00 

17.88 

"81 

82 

80.21 

17.05 

80.13 

17.40 

80.06 

17.75 

79.98 

18.10 

82 

S3 

81.19 

17.26 

81.11 

17.61 

81.03 

17.96 

80.95 

18.32 

83 

84 

82.16 

17.46 

82.09 

17.82 

82.01 

18.18 

81.93 

18.54 

84 

85 

83.14 

17.67 

83.06 

18.04 

82.99 

18.40 

82.90 

18.76 

85 

86 

84.12 

17.88 

84.04 

18.25 

83.96 

18.61 

83.88 

18.98 

86 

87 

85.10 

18.09 

85.02 

18.46 

84.94 

18.83 

84.85 

19.20 

87 

88 

86.08 

18.30 

86.00 

18.67 

85.91 

19.05 

85.83 

19.42 

88 

89 

87.06 

18.50 

86.97 

18.88 

86.89 

19.26 

86.81 

19.64 

89 

90 
91 

88.03 

18.71 

87.95 
88.93 

19.10 

87.87 

19.48 

87.78 

19.86 

90 

89.01 

18.92 

19.31 

88.84 

19.70 

88.76 

20.08 

91 

92 

89.99 

19.13 

89.91 

19.52 

89.82 

19.91 

89.73 

20.30 

92 

93 

90.97 

19.34 

90.88 

19.73 

90.80 

20.13 

90.71 

20.52 

93 

94 

91.95 

19.54 

91.86 

19.94 

91.77 

20.35 

91.68 

20 .  75 

94 

95 

92.92 

19.75 

92.84 

20.16 

92 .  75 

20.56 

92.66 

20.97 

95 

96 

93.90 

19.96 

93.81 

20.37 

93.72 

20.78 

93.63 

21.19 

96 

97 

94.88 

20.17 

94.79 

,20.58 

94.70 

20.99 

94.61 

21.41 

97 

98 

95.86 

20.38 

95.77 

20.79 

95.68 

21.21 

95.58 

21.63 

98 

99 

96.84 

20.58 

96.75 

21.01 

96.65 

21.43 

96.56 

21.85 

99 

100 

o 
c 
S 

97.81_ 
Dep. 

20.79 
Lat. 

97.72 

21.22 

97.63 

21.64 

97.53 

22.07 

100 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

6 

1 

.2 
Q 

78  Deg. 

77|  Deg 

771  Deg. 

m  Deg. 

28 


TRAVl KSE    TABLE. 


5 

CO 

P 

3 
O 
CD 

T 

13  Deg. 

13:t  Deg. 

13A] 

Deg. 

13!  Deg. 

o 
o 

Lat.  1 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

0.97 

0.23 

0.97 

0.23 

0,*97 

0.23 

0.97 

0.24 

1 

2 

1.95  1 

0.4.'; 

1 .  95 

0.46 

1.95 

0.47 

1.94 

0.48 

2 

3 

2.93 

0.67 

2.92 

0.69 

2.92 

0.70 

2.91 

0.71 

3 

4 

3.90 

0.90 

3.89 

0.92 

3.89 

0.93 

3.89 

0.95 

4 

f) 

4.87 

1.12 

4.87 

1.15 

4.86 

1.17 

4.86 

1.19 

5 

6 

5.85 

1.35 

5.84 

1.38 

5.83 

1.40 

5.83 

1.43 

6 

7 

6.82 

1.57 

0.81 

1.60 

6.81 

1.63 

6.80 

1.66 

7 

8 

7.80 

1.80 

7.79 

1.83 

7.78 

1.87 

7.77 

1.90 

8 

9 

8.77 

2.02 

8.76 

2.06 

8.75 

2.10 

8.74 

2.14 

9 

10 
11 

9.74 

2.25 

9.73 

2.29 

9.72 

2.33 

9.71 

2.38 

10 
11 

10.72 

2.47 

10.71 

2.52 

10.70 

2.57 

10.68 

2.61 

1? 

11.69 

2.70 

11.68 

2.75 

11.67 

2.80 

11.66 

2.85 

12 

13 

12.67 

2.92 

12.65 

2.98 

12.64 

3.03 

12.63 

3.09 

13 

14 

13.64 

3.15 

13.63 

3.21 

13.61 

3.27 

13.60 

3.33 

14 

15 

14.62 

3.37 

14.60 

3.44 

14.59 

3.50 

14.57 

3.. 57 

15 

16 

15.59 

3.60 

15.. 57 

3.67 

15.56 

3.74 

15.54 

3.80 

16 

17 

16.57 

3.82 

16.55 

3.90 

16.53 

3.97 

16.51 

4.04 

17 

18 

17.54 

4.05 

17. .52 

4.13 

17.50 

4.20 

17.48 

4.28 

18 

19 

18.51 

4.27 

18.49 

4.35 

18.48 

4.44 

18.46 

4.52 

19 

20 

19.49 

4.50 

19.47 

4.58 

19.45 
20.42 

4.67 
4.90 

19.43 

4.75 

20 
21 

21 

20.46 

4.72 

27). 44 

4.81 

20.40 

4.99 

29, 

21.44 

4.95 

21.41 

5.04 

21.39 

5.14 

21.37 

5.23 

22 

23 

22.41 

5.17 

22.39 

5.27 

22.36 

5.37 

22.34 

5.47 

23 

24 

23.38 

5.40 

23.36 

5.50 

23.34 

5.60 

23.31 

5.70 

24 

25 

24.36 

5.62 

24.33 

5.73 

24.31 

5.84 

24.28 

5.94 

25 

26 

25.33 

5.85 

25.31 

5.96 

25.28 

6.07 

25.25 

6.18 

26 

27 

26.31 

6.07 

26.28 

6.19 

26.25 

6.30 

26.23 

6.42 

27 

28 

27.28 

6.30 

27.25 

6.42 

27.23 

6.. 54 

27.20 

6.66 

28 

29 

28.26 

6.52 

28.23 

6.65 

28.20 

6.77 

28.17 

6.89 

29 

30 
31 

29.23 
30.21 

6.75 

29.20 

6.88 

29.17 

7.00 

29.14 

7.13 

30 

6.97 

30.17 

7.11 

30.14 

7.24 

30.11 

7.37 

31 

32 

31.18 

7.20 

31.15 

7.33 

31.12 

7.47 

31.08 

7.61 

32 

33 

32.15 

7.42 

32.12 

7.56 

32.09 

7.70 

32.05 

7.84 

33 

34 

.33.13 

7.65 

33.09 

7.79 

33.06 

7.94 

33.03 

8.08 

,31 

35 

34.10 

7.87 

34.07 

8.02 

34.03 

8.17 

34.00 

8.32 

35 

36 

35.08 

8.10 

35.04 

8.25 

35.01 

8.40 

34.97 

8.56 

36 

37 

36.05 

8.32 

36.02 

8.48 

35.98 

8.64 

35.94 

8.79 

37 

38 

37.03 

8.55 

36.99 

8.71 

36.95 

8.87 

36.91 

9.03 

38 

39 

38.00 

8.77 

37.96 

8.94 

37.92 

9.10 

37.88 

9.27 

39 

40 
41 

38.97 

9.00 

38.94 

9.17 

38.89 

9.34 

38.85 

9.51 

40 

41 

39.95 

9.22 

39.91 

9.40 

39.87 

1  9.57 

39.83 

9.75 

42 

40.92 

9.45 

40.88 

9.63 

40.84 

1  9.80 

40.80 

9.98 

42 

43 

41.90 

9  67 

41.86 

9.86 

41.81 

10.04 

41.77 

10.22 

43 

44 

42.87 

9.90 

42.83 

19.08 

42.78 

10.27 

42.74  1  10.46 

44 

45 

43.85 

10.12 

43.80 

10.31 

43.76 

10.51 

43.71 

10.70 

45 

46 

44.82 

10.35 

44.78 

10.54 

44.73 

10.74 

44.68 

10.93 

46 

47 

45.80 

10.57 

45.75 

10.77 

45.70 

1 10.97 

45.65 

11.17 

47 

48 

46.77 

10.80 

46.72 

11.00 

46.67 

11.21 

46.62 

11.41 

48 

49 

47.74 

11.02 

47.70 

11.23 

4-7.65 

1  11.44 

47.60 

11.65 

49 

50 

48.72 

11.25 

48.67 

11.46 

48.62 

11.67 

48 .  57 

11.88 

50 

§ 

a 

S 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

8 

c 

1 

s 

77  Deg. 

76J  Deg. 

76J 

Deg. 

76i  Deg. 

TRAVERSE    TABLE. 


29 


E 

13  Deg. 

13i  Deg. 

13i  Deg. 

131  Deg. 

s 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

49.69 

11.47 

49.64 

Tr.69' 

49.59 

11.91 

49.54 

12.12 

52 

50.67 

11.70 

50.62 

11.92 

50.66 

12.14 

50.51 

12.36 

53 

63 

51.64 

11.92 

51.59 

12.16 

51.54 

12.37 

61.48 

12.60 

53 

54 

52.62 

12.15 

52.56 

12.38 

52.51 

12.61 

52.46 

12.84 

54 

55 

53.59 

12.37 

53.54 

12.61 

63.48 

12.84 

53.42 

13.07 

55 

56 

54.56 

12.60 

54.51 

12.84 

64.45 

13.07 

64.40 

13.31 

56 

57 

55.54 

12.82 

65.48 

13.06 

56.43 

13.31 

56.37 

13.56 

57 

58 

56.51 

13.05 

56.46 

13.29 

.56.40 

13.54 

56  34 

13.79 

58 

59 

57.49 

13.27 

57.43 

13.52 

57.37 

13.77 

67.31 

14.02 

59 

60 
'61 

58.46 

13.. 50 

68.40 

13.75 

68.34 
59.31 

14.01 
14.24 

68.28 
59.25 

14.26 

60 

59.44 

13.72 

59.38 

13.98 

14.50 

61 

62 

60.41 

13.95 

60.35 

14.21 

60.29 

14.47 

60.22 

14.74 

62 

63 

61.39 

14.17 

61.32 

14.44 

61.26 

14.71 

61.19 

14.97 

63 

64 

62.36 

14.40 

62.30 

14.67 

62.23 

14.94 

62.17 

15.21 

64 

65 

63.33 

14.62 

63.27 

14.90 

63.20 

15.17i 

63.14 

15.46 

65 

66 

64.31 

14.85 

64.24 

15.13 

64.18 

16.41  ! 

64.11 

15.69 

66 

67 

65. 2S 

15.07 

66.22 

15.36 

65.15 

15.64  1 

65.08 

15.93 

67 

68 

66.26 

15.30 

66.19 

15.69 

66.12 

16.87 

66.05 

16.16 

68 

69 

67.23 

15.52 

67.16 

15.81 

67.09 

16.11 

67.02 

16.40 

69 

70 
71 

68.21 

15.75 

68.14 

16.04 

68.07 

16.34 

67.99 

16.64 

70 

69.18 

16.97 

69.11 

16.27 

69.04 

16.67  1 

68.97 

16.88 

71 

72 

70.15 

16.20 

70.08 

16.. 50 

70.01 

16.81  1 

69.94 

17.11 

72 

73 

71.13 

16.42 

71.06 

16.73 

70.98 

17.04 

70.91 

17.35 

73 

74 

72.10 

16.65 

72.03 

16.96 

71.96 

17.28  1 

71.88 

17.59 

74 

76 

73.08 

16.87 

73.00 

17.19 

72.93 

17.50! 

72.85 

17.83 

75 

76 

74.05 

17.10 

73.98 

17.42 

73.90 

17.74 i 

73.82 

18.06 

76 

77 

75.03 

17.32 

74.95 

17.65 

74.87 

17.98  \ 

74.79 

18.30 

77 

78 

76.00 

17.56 

76.92 

17.88 

75.84 

18.21 

75.76 

18.64 

78 

79 

70.98 

17.77 

76.90 

18.11 

76.82 

18.44 

76.74 

18.78 

79 

80 

77.95 

18.00 

77.87 

18.34  1 

77.79 

18.68 

77.71 

19.01 

80 

81 

78.92 

18.22 

78.84 

18. .57  1 

78.76 

18.91 

78.68 

19.26 

81 

82 

79.90 

18.45 

79.82 

18.79 

79.73 

19.14 

79.65 

19.49 

82 

83 

80.87 

18.67 

80.79 

19.02  1 

80.71 

19.38 

80.62 

19.73     83 1 

84 

81.85 

18.90 

81.76 

19.25 

81.68 

19.61 

81.69 

19.97 

84 

85 

82 .  82 

19.12 

82.74 

19.48 

82.65 

19.84 

82.. 56 

20 .  20 

86 

86 

83.80 

19.35 

83.71 

19.71 

83.62 

20.08 

83.54 

20.44 

86 

87 

84.77 

19.57 

84.68 

19.94' 

84.60 

20.31 

84.51 

20.68 

87 

88 

85.74 

19.80 

85.66  120.17 

85.57 

20.54  185.48 

20.92 

88 

89 

86.72 

20.02 

86.63 

20.40 

86.54 

20.78  I!  86.45 

21.15 

89 

90 
91 

87.69 
88.67 

20.25 

87.60 

88.58 

20.63 
20.86 

87.51 

21.01  i:  87.42 

21. .39 

90 

20.47 

88.49    21.24:]  88.39 

21.63 

91 

92 

89.64 

20.70 

89.66 

21.09 

89.46    21.48     89.36 

21.87 

92 

93 

90.62 

20 .  92 

90.62    21.32     90.43  1  21.71  i!  90.33 

22.10 

93 

94 

91.. 59 

21.15 

91.60 

21.  .54     91.40  1  21.94  1)  91.31 

22.34 

94 

95 

92.57 

21.37  11  92.47 

21.77     92.38  122.18     92.28 

22.58 

95 

96 

93.54 

21.60  !  93.44 

22.00     93.35!  22.41  '!  93.25 

22.82 

96 

97 

94.51 

21.82 

94.42 

22.23     94.32 

22.64  ij  94.22 

23 .  06 

97 

98 

95.49 

22.05 

95.39 

22.46     95.29 

22.88  li  95.19 

23 .  29 

98 

99 

96.46 

22.27 

96.36 

22.69     96.26 

23.11  !!  96.16 

23.53 

99 

100 

6 

V 

n 
% 

b 

97.44 
Dcp. 

22.50 
Lat. 

97.34 

22.92 

97.24  1  23.34  1 
Dep.  1    Lat. 

97.13 

23 .  77 

ICO 

Dcp. 

Lat. 

Dop. 

Lat. 

CJ 

77  Deer. 

76f  Dng.            l^  Deg.      i!      76i  Deg. 

5 

19 


'AU 


TKAVfiRSE    TABLE. 


oi 

— 

14  Deg. 

14i  Deg. 

14^  Deg. 

1 
141  Dog.  1 

5 

p 

1 

n 
9 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

0.97 

0  24 

0.97 

0.25 

0.97 

0.25 

0.97 

0.25 

2 

1.94 

0.48 

1.94 

0.49 

1.94 

0.50 

1.93 

0.51 

2 

3 

2.91 

0.73 

2.91 

0.74 

2.90 

0.75 

2.90 

0.76 

3 

4 

3.88 

0.97 

3.88 

0.98 

3.87 

1.00 

3.87 

1.02 

4 

5 

4.85 

1.21 

4.85 

1.23 

4.84 

1.25 

4.84 

1.27 

5 

6 

5.82 

1.45 

5-.  82 

1.48 

5.81 

1.50 

5.80 

1.53 

6 

7 

6.79 

1.69 

6.78 

1  72 

6.78 

1.75 

6.77 

1.78 

7 

8 

7.76 

1.94 

7.75 

1.97 

7.75 

2.00 

7.74 

2.04 

8 

9 

8.73 

2.18 

8.72 

2.22 

8.71 

2.25 

8.70 

2.29 

9 

10 

9.70 

2.42 

9.69 

2.46 

9.68 

2., 50 

9.67 

2.55 

JO 

11 

10.67 

2.66 

10.66 

2.71 

10.65 

2.75 

10.64 

2.80 

11 

12 

11.64 

2.90 

11.63 

2.95 

11.62 

3.00 

11.60 

3.06 

12 

13 

12.61 

3.15 

12.60 

3.20 

12.59 

3.25 

12.57 

3.3] 

13 

14 

13.58 

3.39 

13.57 

3.45 

13.55 

3.51 

13.54 

3.56 

14 

15 

14.55 

3.63 

14.54 

3.69 

14.52 

3.76 

14.51 

3.82 

15 

16 

15.52 

3.87 

15.51 

3.94' 

15.49 

4.01 

15.47 

4.07 

16 

17 

16.50 

4.11 

16.48 

4.18 

16.46 

4.26 

16.44 

4.33 

17 

18 

17.47 

4.35 

17.45 

4.43 

17.43 

4.51 

17.41 

4.58 

18 

19 

18.44 

4.60 

18.42 

4.68 

18.39 

4.76 

18.37 

4.84 

19 

20 

21 

19.41 

4.84 

19.38 

4.92 

19.36 

5.01 

19.34 

5.09 

20 
21 

20.38 

5.08 

20.35 

5.17 

20.33 

5.26 

20.31 

5.35 

22 

21.35 

5.32 

21.32 

5.42 

21.30 

5.51 

21.28 

5.60 

22 

23 

22.32 

5.56 

22.29 

5.66 

22.27 

5.76 

22.24 

5.86 

23 

24 

23.99 

5.81 

23.26 

5.91 

23.24 

6.01 

23.21 

6.11 

24 

25 

24.26 

6.05 

24.23 

6.15 

24.20 

6.26 

24.18 

6.37 

25 

26 

25.23 

6.29 

25.20 

6.40 

25.17 

6.51 

25.14 

6.62 

26 

27 

26.20 

6.53 

26.17 

6.65 

26.14 

6.76 

26.11 

6.87 

27 

28 

27.17 

6.77 

27.14 

6.89 

27.11 

7.01 

27.08 

7.13 

28 

29 

28.14 

7.02 

28.11 

7.14 

28.08 

7.26 

28.04!  7.38 

29 

30 
31 

29.11 

7.26 

29.08 

7.38 

29.04 

7.51 

29.01 

7.64 

30 
31 

30.08 

7.50 

30.05 

7.63 

.30.01 

7.76 

29 .  98 

7.89 

32 

31.05 

7.74 

31.02 

7.88 

30.98 

8.01 

30.95 

8.15 

32 

33 

32.03 

7.98 

31.98 

8.12 

31.95 

8.26 

31.91 

8.40 

33 

34 

32.99 

8.23 

32.95 

8.37 

32.92 

8.51 

32.88 

8.66 

31 

35 

.33.96 

8.47 

33.92 

8.62 

33.89 

8.76 

33.85 

8.91 

35 

36 

34.93 

8.71 

34.89 

8.86 

34.85 

9.01 

34.81 

9.17 

38 

37 

35.90 

8.95 

35.86 

9.11 

35.82 

9.26 

35.78 

9.42 

37 

38 

36.87 

9.19 

.36.83 

9.35 

36.79 

9.51 

36.75 

9.67 

38 

39 

37.84 

9.44 

37.80 

9.60 

37.76 

9.76 

37.71 

9.93 

39 

40 
ll 

38.81 

9.68 

38.77 

9.85 

38.73 

10.02 

38.68 

10.18 

40 
41 

39,78 

9.93 

39.74 

10.09 

39.69 

10.27 

39.65 

10.44 

42 

40.75 

10.16 

40.7] 

10.34 

40.66 

10.52 

40.62 

10.69 

42 

43 

41.72 

10.40 

41.68 

10.. 58 

41.63 

10.77 

41.58 

10.95 

43 

44 

42 .  69 

10.64 

42.65 

10.83 

42.60 

11.02 

42.55 

11  .20 

44 

45 

43.66 

10.89 

43.62 

11.08 

43.57 

11.27 

43.52 

11.46 

45 

46 

44.63 

11.13 

44.. 58 

11.32 

44.53 

11.52 

44.48 

11.71 

46 

47 

45.60 

11.37 

45.55 

11.57 

45.50 

11.77 

45.45 

11.97 

47 

48 

46.57 

11.61 

46.52 

11.82 

46.47 

12.02 

46.42 

12.22 

48 

49 

47.54 

11.85 

47.49 

12.06 

47.44 

12.27 

47.39 

12.48 

49 

50 

48.51 

12.10 

48.46 

12.31 

48.41 

12.52 

48.35 

12.73 

50 

i 

c 

ri 

i 

c 

Dep. 

Lat. 

..^':;_ 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

5 
5 

76 

Dog 

75] 

D.'-. 

16\   Dejr. 

i 

75  V  D-Lr. 

i 

1 

U 

TRAVERSE    TABLE. 


31 


o 

14  Deg. 

14i  Deg. 

14|  Deg. 

j       14|  Deg.     !  D  1 

? 

? 

61 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

? 

49.49 

12.34 

49.43 

12.55 

49.38 

12.77 

49.32 

12.98  i  51 1 

52 

50.46 

12.58 

50.40 

12.80 

50.34 

13.02 

60.29 

13.24 

52 

53 

51.43 

12.82 

51.37 

13.05 

51.31 

13.27 

61.25 

13.49 

53 

54 

52.40 

13.06 

52.34 

13.29 

62.28 

13.62 

52.22 

13.76 

54 

55 

53.37 

13.31 

53.31 

13.54 

63.25 

13.77 

63.19 

14.00 

55 

56 

54.34 

13.55 

54.28 

13.78 

54.22 

14.02 

54.16 

14.26 

66 

57 

55.31 

13.79 

55.25 

14.03 

56.18 

14.27 

55.12  1  14.51 

57 

58 

56.28 

14.03 

.56.22 

14.28 

66.16 

14.52 

56.09 

14.77 

58 

59 

.57.25 

14.27 

57.18 

14.52 

67.12 

14.77 

57.06 

16.02 

59 

60 
61 

58.22 

14.52 

68.15 

14.77 

58.09 

15.02 

68.02 

16.28 

60 

59.19 

14.76 

59.12 

15.02 

.59.06 

15.27 

58.99 

16.. 63 

61 

62 

60.16 

15.00 

60.09 

15.26 

60.03 

16.62 

59.96 

16.79 

62 

63 

61.13 

15.24 

61.06 

16.51 

60.99 

16.77 

60.92 

16.04 

63 

64 

62.10 

15.48 

62.03 

15.75 

61.96 

16.02 

61.89 

16.29 

64 

65 

63.07 

15.72 

63.00 

16.00 

62.93 

16.27 

62.86 

16.65 

65 

66 

64.04 

15.97 

63.97 

16.26 

63.90 

16.63 

163.83 

16.80 

66 

67 

65.01 

16.21 

64.94 

16.49 

64.87 

16.78 

64.79 

17.06 

67 

68 

65.98 

16.45 

65.91 

16.74 

65.83 

17.03 

66.76 

17.31 

68 

69 

66.95 

16.69 

66.88 

16.98 

66.80 

17.28 

66.73 

17.67 

69 

70 

71 

67.92 

16.93 

67.85 

17.23 

67.77 

17.63 

17.78 

67.69 

17.82     70 1 

68.89 

17.18 

68.82 

17.48 

68.74 

68.66 

18.08 

71 

72 

69.86 

17.42 

69.78 

17.72 

69.71 

18.03 

69.63 

18.. 33 

72 

73 

70.83 

17.66 

70.75 

17.97 

70.67 

18.28 

70.. 69 

18.59 

73 

74 

71.80 

17.90 

71.72 

18.22 

71.64 

18.53 

71.56 

18.84 

74 

75 

72  77 

18.14 

72.69 

18.46 

72.61 

18.78 

72.53 

19.10 

75 

76 

73.74 

18.39 

73.66 

18.71 

73.58 

19.03 

73.60 

19.35 

76 

77 

74.71 

18.63 

74.63 

18.96 

74.. 65 

19.28 

74.46 

19.60 

77 

78 

75.68 

18.87 

75.60 

19.20 

75.62 

19.63 

75.43 

19.86     78| 

79 

76.65 

19.11 

76.57 

19.46 

76.48 

19.78 

76.40 

20.11 

79 

80 
81 

77.62 
78.59 

19.35 

77.54 

19.69 

77.45 

20.03 

77.36 

20.37 

80 

19.60 

78.51 

19.94 

78.42 

20.28 

78.33 

20.62 

81 

82 

79.56 

19.84 

79.48 

20.18 

79.39 

20.63 

79.30 

20.88 

82 

83 

80.53 

20.08 

80.45 

20.43 

80.36 

20.78 

80.26 

21.13 

83 

84 

81.50 

20.32 

81.42 

20.68 

81.32 

21.03 

81.23 

21.39 

84 

85 

82.48 

20.56 

82.38 

20.92 

82.29 

21,28 

82.20 

21.64 

85 

86 

83.45 

20.81 

83.35 

21.17 

83.26 

21.63 

83.17 

21.90 

86 

87 

84.42 

21.05 

84.32 

21.42 

84.23 

21.78 

84.13 

22.16 

87 

88 

85.39 

21.29 

85.29 

21.66 

86.20 

22.03 

85.10 

22.41 

88 

89 

86.36 

21.53 

86.26 

21.91 

86.17 

22.28 

86.07 

22.66  1  89 

90 
91 

87.33 

21.77 

87.23 
88.20 

22.16 

87.13 

22.. 53 

87.03 

22.91  :   90 

88.30 

22.01 

22.40 

88.10 

22 .  78 

88.00 

23.17  1   91 

92 

89.27 

22.26 

89.17 

22.66 

89.07 

23.04 

88.97 

23.42  ,   92 

93 

90.24 

22.50 

90.14 

22.89 

90.04 

23.29 

89.94 

23.68     93 

94 

91.21 

22.74 

91.11 

23.14 

91.01 

23.. 54 

90.90 

23.93  1   94 

95 

92.18 

22.98 

92.08 

23.38 

91.97 

23.79 

91.87 

24.19  i   95 

96 

93.15 

23.22 

93.05 

23.63 

92.94 

24.04 

92.84 

24.44;  96 

97! 

94.12 

23.47 

94.02 

23.88 

93.91 

24.29 

93.80 

24.70     97 

98! 

95.09 

23.71 

94.98 

24.12| 

94.88 

24.54 

94.77 

24.95  1  98 

99  ! 

96.06 

23  95 

96.95 

24.37; 

95.85 

24.79 

95.74 

25.21  ,   99 

100  1 

97.03 

24.19 

96.92 
Dep. 

24.62 

96.81 

26.04 

96.70 

26.46   100 

Dep.  j    Lat. 

Lat.  i 

Dep. 

Lat. 

Dep. 

Lat. 

»■ 
c 

5j 

76  Deg. 

75^  Deg      i 

i 

751  Dej:. 

75^  Deg 

%, 

Q 

32 


TRAVERSE    TABLC. 


! 

1 

15  Deg. 

15i  Deg. 

15^ 

Deg. 

151  Deg. 

La.. 

0.97 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

0.26  1 

0.96 

0.26 

0.96 

0.27 

0.96 

0.27 

1 

2 

1.93 

0.52  1 

1.93 

0..53 

1.93 

0.53 

'    1.92 

0.54 

2 

3 

2.90 

0.78 

2.89 

0.79 

2.89 

0.80 

2.89 

0.81 

3 

4 

3.86 

1.04 

3.86 

1.05 

3.85 

1.07 

3.85 

1.09 

4 

5 

4.83 

1.29  1 

4.82 

1.32 

4.82 

1.34 

4.81 

1.36 

5 

6 

5.80 

1.55  I 

5.79 

1.58 

5.78 

1.60 

5.77 

1,63 

6 

7 

0.76 

1.81 

6.75 

1.84 

6.75 

1.87 

6.74 

1.90 

7 

8 

7.73 

2.07  1 

7.72 

2.10 

7.71 

2.14 

7.70 

2.17 

8 

9 

8.69 

2.33! 

8.68 

2.. 37 

8.67 

2.41 

8.66 

2.44 

9 

10 

11 

9.66 

2.59 

9.65 

2.63 

9.64 

2.67 

9.62 

2.71 

10 

10.63 

2.85  j 
3.11  1 

10.61 

2.89 

10.60 

2.94 

10.59 

2.99 

11 

12 

11.59 

11.58 

3.16 

11.56 

3.21 

11.55 

3.26 

12 

13 

12.56 

3.36  j 

12.54 

3.42 

12.53 

3.47 

12.51 

3.53 

13 

14 

13.52 

3.62 

13.51 

3.68 

13.49 

3.74 

13.47 

3.80 

14 

15 

14.49 

3.88 

14.47 

3.95 

14.45 

4.01 

14.44 

4.07 

15 

16 

15.45 

4.14 

15.44 

4.21 

15.42 

4.28 

15.40 

4.34 

16 

17 

16.42 

4.40  1 

16.40 

4.47 

16.38 

4.54 

16.36 

4.61 

17 

18 

17.39 

4.66 

17.37 

4.73 

17.35 

4.81 

17.32 

4.89 

18 

19 

18.35 

4.92 

18.33 

5.00 

18.31 

5.08 

18.29 

5.16 

19 

20 

19.32 

5.18  i 

19.30 

5.26 

19.27 

5.34 'i  19.25 

5.43 

20 

21 

20.28 

5.44  1 

20.26 

5.52 

20.24 

5.61 

20.21 

5.70 

21 

22 

21.25 

5.69 

21.23 

5.79 

21.20 

5.88 

21.17 

5.97 

22 

23 

22.22 

5.95 

22.19 

6.05 

22.16 

6.15 

22.14 

6.24 

23 

24 

23.18 

6.21 

23.15 

6.31 

23.13 

6.41 

23.10 

6.51 

24 

25 

24.15 

6.47 

24.12 

6.58 

24.09 

6.68 

24.06 

6.79 

25 

26 

25.11 

6.73 

25.08 

6.84 

25.05 

6.95 

25.02 

7.06 

26 

27 

26.08 

6.99 

26.05 

7.10 

26.02 

7.22 

25.99 

7.33 

27 

28 

27,05 

7.25 

27.01 

7.36 

26.98 

7.48 

26.95 

7.60 

28 

29 

28.01 

7.61 

27.98 

7.63 

27.95 

7.75 

27.91 

7.87 

29 

30 
31 

28.98 

7.76 

28.94 

7.89 

28.91 

8.02 

28.87 

8.14 

30 

29.94 

8.02 

29.91 

8.151 

29.87 

8.28 

29.84 

8.41 

31 

32 

30.91 

8.28 

30.87 

8.42  1 

30.84 

8.55 

30.80 

8.69 

32 

33 

31.88 

8.54 

31.84 

8.68  1 

31.80 

8.82 

31.76 

8.96 

33 

34 

32.84 

8.80 

32.80 

8.94 

32.76 

9.09 

32.72 

9.23 

34 

35 

33.81 

9.06 

33.77 

9.21 

33.73 

9.35 

33.69 

9.50 

35 
36 
37 

36 

34.77 

9.32 

34.73 

9.47 

34.69 

9.62 

34.65 

9.77 

37 

35.74 

9.58 

35.70 

9.73 

35.65 

9.89 

35.61 

10.04 

38 

36.71 

9.84 

36.66 

10.00 

36.62 

10.16 

36.57 

10.31 

38 

39 

37.67 

10.09 

37.63 

10.26 

37.58 

10.42 

37.54 

10.59 

39 

40 

38.64 

10.35 

38.59 

10.52 

38.55 

10.69 

38.50 

10,86 

40 

41 

39.60 

10.61 

39.56 

10.78 

39.51 

10.96 

39.46 

11.13 

41 

42 

40.57 

10.87 

40.52 

11.05 

40.47 

11.22 

40.42 

11.40 

42 

43    41.53 

11.13 

141.49 

11.31 

41.44 

11.49 

41.39 

11.67 

43 

44    42.50 

11.39 

42.45 

11.57 

42.40 

11.76 

42.35 

11.94 

44 

45    43.47 

11.65 

43.42 

11.84 

43.36 

12.03 

43.31 

12.21 

45 

46    44.43 

11.91 

44.38 

12.10 

44.33 

12.29  1144.27 

12.49 

40 

47    45.40 

12.16     45.35 

12.36 

45.29 

12.56  1  45.24 

12.76 

47 

48    46.36 

12.42     46.31 

12.63 

46.25 

12.83     46.20 
13.09  !!47.16 

13.03 

48 

49 

47.33 

12.68     47.27 

12.89 

47.22 

13.30 

49 

50 

48.30 

12.94     48.24 

13.15 

48.18 

13.36 
Lat. 

||  48.12 

, 13.57 

50 

Dep. 

Lat.       Dep. 

Lat. 

Dep. 

Dop. 

Lat. 

6 
o 

c 

"tia 

Q 

75 

1 

Dog.          :4\ 

Deg. 

1^ 

Deg.       '      74i 

Deg. 

TRAVERSE    TABLE. 


33 


p 

9 
o 
? 

"5\ 

15  Dog. 

15i  Deg. 

15|  Deg. 

) 
151  Deg. 

p' 

o 
p 

"5]' 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep.  [ 
13.63  1 

Lat. 

Dep. 

49.26 

13.20 

4'9720" 

13.41 

49.15 

49.09 

13.84 

52 

50.23 

13.46 

50.17 

13.68 

.50.11 

13.90! 

.50.05 

14.11 

52 

53 

51.19 

13.72 

51.13 

13.94 

51.07 

14.16 

51.01 

14.39 

53 

54 

52.16 

13.98 

52.10 

14.20 

.52.04 

14.43! 

51.97 

14.66 

54 

55 

53.13 

14.24 

53.06 

14.47 

.53.00 

14.70 i 

.52.94 

14.93 

55 

56 

54.09  1  14.49! 

54.03 

14.73 

53.96 

14.97 i 

.53.90 

15.20 

56 

57 

55.06]  14.75  1 

54.99 

14.99 

54.93 

15.23  1 

54.86 

15.47 

57 

58 

56.02 

15.01 

55.96 

15.26 

55.89 

15..50: 

55.82 

15.74 

58 

59 

.56.99 

15.27 

56.92 

15.52 

56.85 

15.77  1 

56.78 

16.01 

59 

60 
61 

57.96 

15.53 

57.89 

15.78 

57.82 
58.78 

16.03; 

57.75 

16.29 

60 
61 

.58.92 

15.79 

58.85 

16.04 

18.30  1 

58.71 

16.56  1 

62 

59.89 

16.05 

59.82 

16.31 

59 .  75 

16.57 

59.67 

16.83 

62 

63 

60.85 

16.31 

60.78 

16.57 

60.71 

16.84 

60.63 

17.10 

63 

64 

61.82 

16.56 

61.75 

16.83 

61.67 

17.10 

01.60 

17.37 

64 

65 

62.79 

16.82 

62.71 

17.10 

62.64 

17.37 

62.. 56 

17.64 

65 

66 

63.75 

17.08 

63.68 

17.35 

63.60 

17.64: 

63.52 

17.92 

66 

67 

64.72 

17.34 

64.64 

17.62 

64.56 

17.90' 

64.48 

18.19 

67 

68 

65.68 

17.60 

65.61 

17.89 

65.53 

18.17 

65.45 

18.46 

68 

69 

66.65 

17.86 

66.57 

18.15 

06.49 

18.44' 

66.41 

18.73 

69 

70 
71 

67.61 

18.12 

67.. 54 

18.41 

67.45 

18.71 

67.37 
68.33 

19.00 
19.27 

70 
71 

68.58 

18.38 

68.. 50 

18.68  1 

68.42 

18.97 

72 

69.55 

18.63 

09.46 

18.94 

69.38 

19.24 

69.30    19.. 54 

72 

73 

70.51 

18.89 

70.43 

19.20 

70.35 

19.51 

70.26     19.82 

73 

74 

71.48 

19.15 

71.39 

19.46 

71.31 

19.78 

71.22    20.09 

74 

75 

72.44 

19.41 

72.36 

19.73 

72.27 

20.04 

72.18    20.36 

75 

76 

73.41 

19.67 

73.32 

19.99 

73.24 

20.31  1  73.15    20.63 

76 

77 

74.38 

19.93 

74.29 

20.25 

74.20 

20.58     74.11 

20.90 

77 

78 

75.34 

20.19 

75.25 

20.52 

75.16 

20.84!  75.07 

21.17 

78 

79 

76.31 

20.45 

76.22 

20.78 

76.13 

21.11 

76.03 

21.44 

79 

80 
'81 

77.27 

20.71 

77.18 

21.04 

77.09 

78.05 

21.38 

77.00 

21.72 

80 
81 

78.24 

20.96 

78.15 

21.31 

21.65 

77.96 

21.99 

82 

79.21 

21.22 

79.11 

21.. 57 

79.02 

21.91 

78.92 

22.26 

82 

83 

80.17 

21.48 

80.08 

21.83 

79.98 

22.18 

79.88 

22.53 

83 

84 

81.14 

21.74 

81.04 

22.09 

80.94 

22.45 

80.85 

22.80 

84 

85 

82.10 

22.00 

82.01 

22.36 

81.91 

22.72 

1 81.81 

23.07 

85 

86 

83.07 

22.26 

82.97 

22.62 

82.87 

22.98 

182.77 

23.34 

86 

87 

84.04 

22.52 

83.94 

22.88 

83.84 

23.25 

i  83.73 

23.62 

87 

88 

85-00 

22.78 

84.90 

23.15 

84.80 

23.. 52 

84.70 

23.89 

88 

89 

85.97 

23-03 

85.87 

23.41 

85.76 

23.78 

85.66 

24.16 

89 

90 
91 

86.93 

23.29 

86.83 

23.67 

86.73 

24.05 

86.62 

24.43 

90 
91 

87.90 

23.55 

87.80 

23.94 

87.69 

24.32 

87.. 58 

24.70 

92 

88.87 

23.81 

88.76 

24.20 

88.65 

24.59 

88.55 

24.97 

92 

93 

89.83 

24.07 

89.73 

24.46 

89.62 

24.85 

89.51 

25.24 

93 

94 

90.80 

24.33 

90.69 

24.72 

90.58 

25.12 

90.47 

25.52 

94 

95 

91.76 

24.59 

91.65 

24.99 

91.54 

25 .  39 

191.43 

25.79 

95 

96 

92  73 

24.85 

92.62 

25.25 

92.51 

25 .  65 

192.40 

26.06 

96 

97 

93.69 

25.11 

93.58 

25.51 

93.47 

25 .  92 

i  93.36 

26.33 

97 

98 

94.66 

25.36 

94.. 55 

25.78 

94.44 

26.19 

94.32 

26.60 

98 

99 

95.63 

25.62 

195.51 

26.04 

95.40 

26.46 

i  95.28 

26.87 

99 

100 

c 

.2 

96.59 

25.88 

1 36.48 

26.30 
Lat. 

96.36 

26.72 

96.25 
Dep. 

27.14 
Lat. 

100 

ci 
c 

1  Q 

1 

Dep. 

Lat. 

Dep. 

Dep. 

Lat. 

75  Deg. 

741  Deg. 

74j  Deg. 

1 

m  Deg. 

'i 

34 


traversjE  table. 


5 

00 

o 

a 

16  Deg. 

I6i  Deg. 

161  Deg. 

161  Deg. 

§ 

Lat. 

D&p. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

1 

0.96 

0.28 

0.90 

0.28 

0.96 

0  28 

0.96 

0.29 

1 

2 

I   92 

0.55 

1.92 

0.56 

1.92 

0.67 

1.92 

0.58 

2 

3 

2. 88 

0.83 

2.88 

0.84 

2.88 

0.85 

2.87 

0.86 

3 

4 

3.85 

1.10 

3.84 

1.12 

3.84 

1.14 

3.83 

1.15 

4 

5 

4.81 

1.38! 

4.80 

1.40 

4.79 

1.42 

4.79 

1.44 

5 

6 

5.77 

1.65  1 

5.76 

1.68 

5.75 

1.70 

5.75 

1.73 

6 

7 

6.73 

1.93  1 

0.72 

1.96 

6.71 

1.99 

6.70 

2.02 

7 

8 

7.69 

2.21 

7.68 

2.24 

7.67 

2.27 

7.66 

2.31 

8 

9 

8.&5 

2.48 

8.64 

2.52 

8.63 

2.. 56 

8.62 

2.59 

9 

10 
11 

9.61 

2.76  i 

9.60 

2.80 

9.59 

2.84 

9.58 

2.88 

10 

10.57 

3.03 

10.56 

3.08 

10.55 

3.12 

10.53 

3.17 

11 

12 

11.54 

3.31  1 

11.52 

3.36 

11.51 

3.41 

11.49 

3.46  1    12 

13 

12.50 

3.581 

12.48 

3.64 

12.46 

3.09 

12.45 

3.75      13 

U 

13.40 

3.86 

13.44 

3.92 

13.42 

3.98 

13.41 

4.03      14 

15 

14.42 

4.13  i 

14.40 

4.20 

14.38 

4.26 

14.36 

4.;^     15 

16 

15.38 

4.41 

15.36 

4.48 

15.34 

4.54 

15.32 

4.01  1   16 

17 

16.34 

4.69 

16.32 

4.76 

16.30 

4.83 

16.28 

4.90     17 

18 

17.30 

4.96  1 

17.28 

5.04 

17.26 

5.11 

17.24 

5.19!    18 

19 

18.26 

5.24  1 

18.24 

5.32 

18.22 

5.40 

18.19 

5.48  1    19 

20 

19.23 

5.51 

19.20 

5.60 

19.18 

5.68  I 

19.15 

5.76     20 

21 

20.19 

5.79 

20.16 

5.88 

20.14 

5.96 

20.11 

6.05     21 

22 

21.15 

6.06 

21.12 

6.16 

21.09 

6.25 

21.07 

6.34  1   22 

23 

22.11 

6.341 

22.08 

6.44 

22.05 

6.53 

22.02 

6.63 

23 

24 

23.07 

6.62 

23.04 

6.72 

23.01 

6.82 

22.98 

6.92 

24 

25 

24.03 

6.89 

24.00 

7.00 

23.97 

7.10 

23.94 

7.20 

25 

2fi 

24.99 

7.17 

24.96 

7.28 

24.93 

7.38 

24.90 

7.49  1   26  1 

27 

25.95 

7.44 

25.92 

7.56 

25.89 

7.67 

25.85 

7.78 

27 

28 

20 .  92 

7.72 

20.88 

7.84 

26.85 

7.95 

20.81 

8.07 

28 

29 

27.83 

7.99 

27.84 

8.11 

27.81 

8.24 

27.77 

8.36 

29 

30 
31 

28.84 

8.27 

28.80 

8.39 

28.76 

8.52 

28.73 

8.65 

30 

29.80 

8.54 

29 .  76 

8.67 

29.72 

8.80 

29.68 

8.93 

31 

32 

30.76 

8.82 

30.72 

8.95 

30.68 

9.09 

30.64 

9.22 

32 

33 

31.72 

9.10 

31.68 

9.23 

31.64 

9.37 

31.60 

9.51 

33 

34 

32.68 

9.37 

32.64 

9.51 

32.60 

9.66 

32.56 

9.80 

34 

35 

.33.64 

9.65 

33.60 

9.79 

33.58 

9.94 

33.51 

10.09  j   35 

3fi 

31.61 

9.92 

34.56 

10.07 

34.52 

10.22 

34.47 

10.38     36 

37 

35.57 

10.20 

35.52 

10.35 

35.48 

10.51 

35.43 

10.66     37 

38 

36.53 

10.47 

36.48 

10.63 

36.44 

10.79 

36.. 39 

10.95     38 

39 

37.49 

10.75 

37.44 

10.91 

37.39 

11.08 

37.35 

11.24  1  39 

40 
41 

38.45 

11.03 

38.40 

11.19 

38.35 

11.36 

38.30 

11.53 

40 

39.41 

11.30 

39.36 

11.47 

39.31 

11.64 

39.26 

11.82 

41 

42 

40.37 

11.58 

40.32 

11.75 

40.27 

11.93 

40.22 

12.10  1  42 

43 

41.33 

11.85 

41.28 

12.03 

41.23 

12.21 

41.18 

12.39     43 

44 

42.30 

12.13 

42.24 

12.31 

42.19 

12.50 

42.13 

12.68  1  44 

45 

43.26 

12.40 

43.20 

12.59 

43.15 

12.78 

43.09 

12.97 

45 

46 

44.22 

12.68 

44.16 

12.87 

44.11 

13.06 

44.05 

13.26 

46 

47 

45.18 

12.95 

45.12 

13.15 

45.00 

13.35 

45.01 

13.55 

47 

48 

46.14 

13.23 

46.08 

13.43 

46.02 

13.63 

45.96 

13.83 

48 

49 

47.10 

13.51 

47.04 

13.71 

46.98 

13.92 

46 .  92 

14.12 

49 

_50_ 

6 

a 
.2 

48 .  06 

13.78 

48.00 

13.99 

47.94 

14.20' 

47.88 

14.41 

50 

03 
O 

c 

.2 
Q 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

74 

Deg. 

731 

Deg. 

731 

Deg. 

73^  Deg. 

TRWKRSF-    TABLE. 


5 

16  Deg. 

16^  Deg. 

16^- 

Deg 

1 
161  Deg. 

3 
o 

CD 

~5l 

p 
3 
a 
a 

Lat. 
49.02 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

M 

14.06 

48.96 

14.27 

48.90 

14.48 

48.84 

14.70 

52 

49.99 

14.33 

49.92 

14.55 

49.86 

14.77 

49.79 

14.99 

52 

53 

50.95 

14.61 

50.88 

14.83 

.50.82 

15.05 

50.75 

15.27 

53 

54 

51.91 

14.88 

51.84 

15.11 

51.78 

15.34 

51.71 

15.. 56 

54 

55 

52.87 

15.16 

52.80 

15.39 

52.74 

15.62 

52.67 

15.85 

55 

56 

53.83 

15.44 

53.76 

15.67 

53.69 

15.90 

53.62 

16.14 

56 

57    54.79  1 

15.71 

54.72 

15.95 

54.65 

16.19 

54.58 

16.43 

57 

58 

55.75 

15.99 

55.68 

16.23 

55.61 

16.47  1 

55.54 

16.72 

58 

59 

56.71 

16.26 

56.64 

16.51 

56.57 

16.76! 

56.50 

17.00 

59 

60 

57.68 

16.54 

57.60 

16.79 

57 .  53 

17.04 
17.32  1 

57.45 

17.29 
17.58 

60 
61 

61 

58.64 

16.81 

58.56 

17.07 

58.49 

68.41 

62 

59.60 

17.09 

59.52 

17.35 

59.45 

17.61  i 

59.37 

17.87 

G2 

63 

60.56 

17.37 

60.48 

17.63 

60.41 

17.89 i 

60.33 

18.16 

63 

64 

61.52 

17.64  1 

61.44 

17.91 

61.36 

18.18 

61.28 

18.44 

04 

65 

62.48 

17.92  1 

62.40 

18.19 

62.32 

18.46  1 

62.24 

18.73 

05 

66 

63.44 

iS.lOJ 

63.-36 

18.47 

63.28 

18.74! 

63.20 

19.02 

1)6 

67 

64.40  1 

18.47 

64.32 

18.75 

64.24 

19.03' 

64.16 

19.31 

67 

68 

65.37 

18.74 i 

65.28 

19.03 

65.20 

19.31  i 

65.11 

19.60 

68 

69 

66.33 

19.02 

66.24 

19.31 

66.16 

i9.r,0: 

66.07 

19.89 

69 

70 

67.29 

19.29  ! 

67.20 

19.59 

67.12 

68.08 

19.88 
20.17  1 

G7.03 

20.17 

70 

71 

71 

68.25 

19.57 

68.16 

19.87 

67.99 

20.46 

72 

69.21 

19.85 

69.12 

20.15 

69.03 

20.45  1 

68.95 

20.75 

72 

73 

70.17 

20.12 

70.08 

20.43 

69.99 

20.73 i 

69.90 

21.04 

73 

74 

71.13 

20.40 

71.04 

20.71 

70.95 

21.02 

70.86 

21.33      74 

75 

72.09 

20.67 

72.00 

20.99 

71.91 

21.30 

71.82 

21.61       75 

76 

73.06 

20.1/5 

72.96 

21.27 

72.87 

21.. 59 

72.78 

21.90 

76 

77 

74.02 

21.22 

73.92 

21.55 

73.83 

21.87 

73.73 

22.19 

77 

78 

74.98 

21. .50 

74.88 

21.83 

74.79 

22.15 

j 74.69 

22.48 

78 

79 

75.94 

21.78 

75.84 

22.11 

75.75 

22.44 

! 75.65 

22.77 

79 

8.0 

76.90 

22.05 

76.80 

22.39 

76.71 

22.72 

176.61 

23.06 

80 
81 

81 

77.86 

22.33 

77.76 

22.67 

77.66 

23.01 

77.56 

23.34 

82 

78.82 

22.60 

78.72 

22.95 

78.62 

23.29 

78.52 

23.63 

82 

83 

79.78 

22.88 

79.68 

23.23 

79.58 

23.57 

79.48 

23.92 

83 

84 

80.75 

23.15 

80.64 

23.51* 

80.54 

23.86 

80.44 

24.21 

84 

85 

81.71 

23.43 

81.60 

23.79 

81.50 

24.14 

181.39 

24.50 

85 

86 

82.67 

23.70 

82.56 

24.07 

82.46 

24.43 

182.35 

24.78 

86 

87 

83.63 

23.98 

83.52 

24.35 

83.42 

24.71 

183.31 

25.07 

87 

88 

84.59 

24.26 

84.48 

24.62 

84.38 

24.99 

184.27 

25.36 

88 

89 

85.55 

24.53 

85.44 

24.90 

85.33 

25.28 

1 85.22 

25.65 

89 

90 

8G.51     24.81 

86.40 

25.18 

86.29 

25.56 

86.18 

25.94 

90 
91 

91 

87.47 

25.08 

87.36 

25.46 

87.25 

25.85 

87.14 

26.23 

92 

88.44 

25.36 

88.32 

25.74 

88.21 

26.13 

88.10 

26.51 

92 

93 

89.40 

25.63 

89.28 

26.02 

89.17 

26.41 

89.05 

26.80 

y3 

94 

90.  £6 

25.91 

90.24 

26.30 

90.13 

26.70 

90.01 

27.09 

94 

95 

91.32 

26.19 

91.20 

26.58 

91.09 

26.98 

90.97 

27.38 

95 

96 

92.28 

26.46 

92.16 

26.86 

92.05 

27.27 

91.93 

27.67 

96 

97 

93.24 

26.74 

93.12 

27.14 

93.01 

27.55 

92.88 

27.95 

97 

98 

94.20 

27.01 

94.08 

27.42 

93.96 

27.83 

93.84 

28.24 

98 

99 

95.16 

27.29 

95.04 

27.70 

94.92  128.12 

94.80 

28.. 53 

99 

100 

96.13 

27.56 

96.00 

27.98 

95.88}  28.40 

95.76 

28.82 

100 

i 

Dep. 

Lat. 

Dep.      Lat. 
731  Deg. 

Dep. 
73^ 

Lat. 

Dep. 

Lat. 

8 

c4 
.2 

Q 

;  ^4 

Deg. 

De^ 

:3-i 

Deg. 

s 

36 


TKAVl'KSi:    TADLH. 


17  Deg. 

17i  Deg. 

I7i 
I^t. 

Dog.     ' 
Dep. 

171 

Deg 

ST 

s 
o 

3 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 
0.95 

Dep. 

1 

0.96 

0.29 

0.95 

0.30 

0.95 

0.30 

0.30 

2}     1.91 

0..58 

1.91 

0.59 

1.91 

0.60 

1.90 

0.61 

2 

3      2. 87 

0.88 

2.87 

0.89 

2.86 

0.90 

2.86 

0.91 

3 

4 

3.83 

1.17 

3.82 

1.19 

3.81 

1.20 

3.81 

1.22 

4 

5 

t.78 

1.46 

4.78 

1.48 

4.77 

1.50 

4.76 

1.52 

5 

6 

5.74 

1.75 

5.73 

1.78 

5.72 

1.80 

5.71 

1.83 

6 

7 

6.69 

2.05 

6.69 

2.08 

6.68 

2.10 

6.67 

2   13 

7 

8 

7.65 

2.34 

7.64 

2.37 

7.63 

2.41 

7.62 

2.44 

8 

9 

8.61 

2.63 

8.60 

2.67 

8.58 

2.71 

8.57 

2.74 

9 

10 
11 

9.. 56 

2.92 

9.55 

2.97 

9.54 

3.01 

9.. 52 

3.05 

_12 
11 

10.52 

3.22 

10.51 

3.26 

10.49 

3.31 

10.48 

3.35 

12 

1.1.48 

3.51 

11.46 

3.56 

11.44 

3.61 

11.43 

3.66 

12 

13     12.43 

3.80 

12.42 

3.85 

12.40 

3.91 

12.38 

3.96 

13 

14 

13.39 

4.09 

13.37 

4.15 

13.35 

4.21 

13.33 

4.27 

14 

15 

14.34  1    4.39 

14,33 

4.45 

14.31 

4.51 

14.29 

4.57 

15 

16 

15.30  1    4.68 

15.28 

4.74 

15.26 

4.81 

15.24 

4.88 

16 

17 

16.20  1    4.97 

16.24 

5.04 

16.21 

5.11 

16.19 

5.18 

17 

18 

17.21  j     5.26 

17.19 

5.34 

17.17 

5.41 

17.14 

5.49 

18 

19 

18.17      5.56 

18.15 

5.63 

18.12 

5.71 

18.10 

5.79 

19 

20 

19.13  1    5.85 

19.10 

5.93 

19.07 

6.01 

19.05 

6.10 

20 
21 

21 

20.08 

6.14 

20.06 

6.23 

20.03 

6.31 

20.00 

6.40 

22  [21.04 

6.43 

21.01 

6.. 52 

20.98 

6.62 

20.95 

6.71 

22 

23    21.99 

6.72 

21.97 

6.82 

21.94 

6.92 

21.91 

7.01 

23 

24    22.95  1     7.02 

22.92 

7.12 

22.89 

7.22 

22.86 

7.32 

24 

25    23.91  j     7.31 

23.88 

7.41  j 

23.84 

7.. 52 

23.81 

7.62 

25 

26    24.86      7.60 

24.83 

7.71  1 

24.80 

7.82 

24.76 

7.93 

26 

27 

25.82      7.89 

25.79 

8.01 

25.75 

8.12 

25.71 

8.23 

27 

28 

26.78i     8.19 

26.74 

8.30 

26.70 

8.42 

26.67 

8.54 

28 

29 

27.73  1     8.48 

27.70 

8.60 

27.66 

8.72 

27.62 

8.84 

29 

30 
31 

28 .  09  i     8 .  77 

28.65 

8.90 

28.61 

9.02 

28.57 

9.15 

30 
31 

29.65:     9.06 

29.61 

9.19 

29.57 

9.32 

29.52 

9.45 

32 

30.60 j     9.36 

30.56 

9.49 

30.52 

9.62 

30.48 

9.76 

32 

33 

31.56!    9.65 

31.. 52 

9.79 

31.47 

9.92 

31.43 

10.06 

33 

34 

32.51  [    9.94 

32.47 

10.08 

.32.43 

10.22 

32.38 

10.37 

34 

35 

33.47!  10.23 

33.43 

10.38 

33.38 

10.52 

33.33 

10.67 

35 

36 

34.43    10.53 

.34.. 38 

10.68 

34.33 

10.83 

34.29 

10.98 

36 

37 

35.38  1  10.82 

35.34 

10.97 

35.29 

11.13 

35  24 

11.28 

37 

38 

36.34!  11.11 

36.29 

11.27 

36.24 

11.43 

36.19 

11.58 

38 

39 

37.30!  11.40 

37.25 

11.57 

37.19 

11.73 

37.14 

11.89 

39 

40 
41 

38.25    11.09 

38.20 

11.86 

38.15 

12.03 

38.10 

12.19 

40 
41 

39.21    11.99 

139.16 

12.16 

39.10 

12.33 

39.05 

12.50 

42 

40.16    12.28 

40.11 

12.45 

40.06 

12.63 

40.00 

12.80 

42 

43 

41.12    12.57 

41.07 

12.75 

41.01 

12.93 

40.95 

13.11 

43 

44 

42.08    12.86 

42.02 

13.05 

41.96 

13.23 

41.91 

13.41 

44 

45 

43.03    13.16 

42.98 

13.34 

42.92 

13.53 

42.86 

13.72 

45 

46 

43.99    13.45 

43.93 

13.64 

43.87 

13.83 

43.81 

14.02 

46 

47 

44.95    18.74 

44.89 

13.94 

44.82 

14.13 

44.76 

14.33 

47 

48 

45.90    14.03 

45.84 

14.23 

45.78 

14.43 

45.71 

14.63 

48 

49 

46.86    14.33  |  46.80 

14.53 

46.73 

14.73 

46.67 

14.94 

49 

50 

Q 

47.82 

14.62,147.75 

14.83 

47.69 

15.04 

47.62 

15.24 

50 

6 
c 

Q 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

73  Deg. 

721  Deg. 

721 

Deg. 

m  Deg. 

TRAVERSE    TABLE. 


37 


0 

a 
P 
51 

17  Deg. 

m  Deg. 

17A  Deg. 

1?|  Deg. 

3 
o 
a 

Lat. 

Dep. 

Lat. 
48.71 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

48.77 

14.91 

16.12 

48.64 

15.34 

48.57 

15.55 

"51 

52 

49.73 

15.20 

49.66 

15.42 

49.59 

15.64 

49.52 

15.85 

52 

53 

50.68 

15.50 

50.62 

15.72 

50.55 

15.94 

50.48 

16.16 

53 

54 

51.64 

15.79 

51.57 

16.01 

51.50 

16.24 

51.43 

16.46 

54 

55 

52.60 

16.08 

52.53 

16.31 

52.45 

16.54 

52.38 

16.77 

55 

56 

53.55 

16.37 

53.48 

16.61 

53.41 

16.84 

53.33 

17.07 

56 

57 

54.51 

16.67 

54.44 

16.90 

54.36 

17.14 

54.29 

17.38 

57 

58 

55.47 

16.96 

55.39 

17.20 

55.32 

17.44 

55.24 

17.68 

58 

59 

56.42 

17.25 

56.35 

17.50 

56.27 

17.74 

56.10 

17.99 

59 

60 
61 

57.. 38 

17.54 

57.30 

17.79 

57.22 

18.04 

57.14 

18.29 

60 

58.33 

17.83 

58.26 

18.09 

58.18 

18.34 

58.10 

18.60 

61 

62 

59.29 

18.13 

59.21 

18.39 

59.13 

18.64 

59.05 

18.90 

62 

63 

60.25 

18.42 

60.17 

18.68 

60.08 

18.94 

60.00 

19.21 

63 

64 

61.20 

18.71 

61.12 

18.98 

61.04 

19.25 

60.95 

19.51 

64 

65 

62.16 

19.00 

62.08 

19.28 

61.99 

19.55 

61.91 

19.82 

65 

66 

63.12 

19.30 

63.03 

19.57 

62.95 

19.85 

62.86 

20.12 

66 

67 

64.07 

19.59 

63.99 

19.87 

63.90 

20.15 

63.81 

20.43 

67 

68 

65.03 

19.88 

64.94 

20.16 

64.85 

20.45 

64.76 

20.73 

68 

69 

65.99 

20.17 

65.90 

20.46 

65.81 

20.75 

65.72 

21.04 

69 

70 
71 

66.94 

20.47 

66.85 

20.76 

66.76 
67.71 

21.05 

66.67 

21.34 
21.65 

70 

71 

67.90 

20.76 

67.81 

21.05 

21.35 

67.62 

72 

68.85 

21.05 

68.76 

21.35 

68.67 

21.65 

68.57 

21.95 

72 

73 

69.81 

21.34 

69.72 

21.65 

69.62 

21.95 

69.52 

22.26 

73 

74 

70.77 

21.64 

70.67 

21.94 

70.58 

22.25 

70.48 

22.56 

74 

75 

71.72 

21.93 

71.63 

22.24 

71.53 

22.55 

71.43 

22.86 

75 

76 

72.68 

22.22 

72.58 

22.54 

72.48 

22.85 

72.38 

23.17 

76 

77 

73.64 

22.51 

73.54 

22.83 

73.44 

23.15 

73.33 

23.47 

77 

78 

74.59 

22.80 

74.49 

23.13 

74.39 

23.46 

74.29 

23.78 

78 

79 

75.55 

23.10 

75.45 

23.43 

75.34 

23.76 

75.24 

24.08 

79 

80 
81 

76.50 
77.46 

23.39 

76.40 

23.72 

76.30 

24.06 
24.36 

76.19 

24.39 

80 

23.68 

77.36 

24.02 

77.25 

77.14 

24.69 

81 

&2 

78.42 

23.97 

78.31 

24.32 

78.20 

24.66 

78.10 

25.00 

82 

83 

79.37 

24.27 

79.27 

24.61 

79.16 

25.96 

79.05 

25.30 

83 

84 

80.33 

24.56 

80.22 

24.91 

80.11 

25.26 

80.00 

25.61 

84 

85 

81.29 

24.85 

81.18 

25.21 

81.07 

25.56 

80.95 

25.91 

85 

86 

82.24 

25.14 

82.13 

25.50 

82.02 

25.86 

81.91 

26.22 

86 

87 

83.20 

25.44 

83.09 

25.80 

82.97 

26.16 

82.86 

26.52 

87 

88 

84.15 

25.73 

84.04 

26.10 

83.93 

26.46 

83.81 

26.83 

88 

89 

85.11 

26.02 

85.00 

26.39 

84.88 

26.76 

84.76 

27.13 

89 

90 
91 

86.07 

26.31 

85.95 

26.69 

85.83 

27.06 

85.72 

27.44 

27.74 

90 
91 

87.02 

26.61 

86.91 

26.99  i 86.79 

27.36 

86.67 

92 

87.98 

26.90 

87.86 

27.28 

87.74    27.66 

87.62 

28.05 

92 

93 

88.94 

27.19 

88.82 

27.58 

88.70    27.97 

88.57 

38.35 

93 

94 

89.89 

27.48 

89.77 

27.87 

89.65    28.27 

89.53 

28.66 

94 

95 

90.85 

27.78 

90.73 

28.17 

90.60 

28.57 

90.48 

28.96 

95 

96 

91.81 

28.07 

91.68 

28.47 

,  91.56 

28.87 

91.43 

29.27 

96 

97 

92.76 

28.36 

92.64 

28.76 

92.51 

29.17 

92.38 

29.57 

97 

98 

93.72 

28.65 

93.59 

29.06 

93.46 

29.47 

93.33 

29.88 

98 

99 

94.67 

28.94 

94.55 

29.36 

94.42 

29.77 

94.29 

30.18 

99 

100 

.2 

95.63 

29.24 

95.50 

29.65 

95.37 

30.07 

95.24 

30.49 

100 

Dep. 

Lat. 

Dep. 

L.t. 

Dep. 

T.at. 

Dep. 

Lat. 

(6 
u 

c 

so 

Q 

73  Deg. 

721  Deg. 

72^  Deg. 

m  Deg. 

38 


TBAVERSE    TABLE 


5 

o 

a 

18  Deg. 

18i  Deg. 

18i  Deg. 

18|  Deg. 

g 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

1 

0.95 

0.31 

0.95 

0.31 

1    0.95 

0.32 

0.96 

0.32 

2 

2 

1.90 

0.62 

1.90 

0.63 

1.90 

0.63 

1.89 

0.64 

2 

3 

2.85 

0.93 

2.85 

0.94 

2  84 

0.95 

2.84 

0.96 

3 

4 

3.80 

1.24 

3.80 

1.25 

3  79 

1.27 

3.79 

1.29 

4 

5 

4.76 

1.55 

4.75 

1.57 

4.74 

1.59 

4.73 

1.61 

5 

6 

5.71 

1.85 

6.70 

1.88 

5.69 

1.90 

5.68 

1.93 

6 

7 

6.66 

2.16 

6.65 

2.19 

6.64 

2.22 

6.63 

2.25 

7 

8 

7.61 

2.47 

7.60 

2.51 

7.59 

2.54 

7.58 

2.57 

8 

9 

8.56 

2.78 

8.55 

2. 82 

8.53 

2.86 

8.52 

2.89 

9 

10 

9.51 

3.09 

9.50 
10.45 

3.13 

9.48 

3.17 

9.47 

3.21 

10 

11 

10.46 

3.40 

3.44 

10.43 

3.49 

10.42 

3.54 

11 

12 

11.41 

3.71 

11.40 

3.76 

11.38 

3  81 

11.36 

3.86 

12 

13 

12.36 

4.02 

12.35 

4.07 

12.33 

4  12 

12.31 

4.18 

13 

14 

13.31 

4.33 

13.30 

4.38 

13.28 

4.44 

13.26 

4.50 

14 

15 

14.27 

4.64 

14.25 

4.70 

14.22 

4.76 

14.20 

4.82 

15 

16 

15.22 

4.94 

15.20 

5.01 

15.17 

5.08 

15.15 

5.14 

16 

17 

16.17 

5.25 

16.14 

5.32 

16.12 

5.39 

16.10 

5.46 

17 

18 

17.12 

5.56 

17.09 

5.64 

17.07 

5.71 

17.04 

5.79 

18 

19 

18.07 

5.87 

18.04 

5.95 

18.02 

6.03 

17.99 

6.11 

19 

20 
21 

19.02 

6.18 

18.99 

6.26 

18.97 

6.35 

18.94 

6.43 

20 

19.97 

6.49 

19.94 

6.58 

19.91 

6.66 

19.89 

6.75 

21 

22 

20.92 

6.80 

20.89 

6.89 

20.86 

6.98 

20.83'    7.07 

22 

23 

21.87 

7.11 

21.84 

7.20 

21.81 

7.30 

21.78 i    7.39 

23 

24 

22.83 

7.42 

22.79 

7.52 

22.76 

7.62 

22.73 

7  71 

24 

25 

23.78 

7.73 

23.74 

7.83 

23.71 

7.93 

23.67 

8.04 

25 

26 

24.73 

8.03 

24.69 

8.14 

24.66 

8.25 

24.62 

8.36     26 

27 

25.68 

8.34 

25.64 

8.46 

25.60 

8.57 

25.57 

8.68  '  27 

28 

26.63 

8.65 

26.59 

8.77i 

26.55 

8.88 

26.51 

9.00     28 

29 

27.58 

8.96 

27.54 

9.08 

27.50 

9.20 

27.46 

9.32 

29 

30 

28.53 

9.27 

28.49 

9.39 

28.45 

9.52 

28.41 

9.64 

30 
31 

31 

29.48 

9.58 

29.44 

9.71 

29.40 

9.84 

29.35 

9.96 

32 

30.43 

9.89 

30.39 

10.02 

30.35 

10.15 

30.30 

10.29 

32 

33 

31.38 

10.20 

31.34 

10.33 

31.29 

10.47 

31.25 

10.61 

33 

34 

.32.34 

10.51 

32.29 

10.65 

32.24 

10.79 

32.20 

10.93 

34 

35 

33.29 

10.82 

33.24 

10.96 

33.19 

11.11 

.33.14 

11.25 

35 

36 

.34.24 

11.12 

34.19 

11.27 

34.14 

11.42 

34.09 

11.57 

36 

37 

35.19 

11.43 

35.14 

11.59 

35.09 

11.74 

36.04 

11.89 

37 

38 

36.14 

11.74 

36.09 

11.90 

36.04 

12.06 

35.98 

12.21 

38 

39 

37.09 

12.05 

37.04 

12.21 

36.98 

12.37 

36.93 

12.64 

39 

40    38.04  1 

12.36 

37.99 

12.53 

37.93 

12.69 

37.88 

12.86 

40 

41 

38.99 

12.67 

38.94 

12.84 

38.88 

13.01 

38.82 

13.18 

41 

42 

39.94 

12.98 

39.89 

13.15 

39.83 

13.33 

39.77 

13.50 

42 

43 

40.90 

13.29 

40.84 

13.47 

40.78 

13.64 

40.72 

13.82 

43 

44 

41.85 

13.60 

41.79 

13.78 

41.73 

13.96 

41.66 

14.14 

44 

45    42.80  1 

13.91 

42.74 

14.09 

42.67 

14.28 

42.61 

14.46 

45 

46 

43.75 

14.21 

43.69 

14.41 

43.62 

14.60 

43.66 

14.79 

46 

47 

44.70 

14.. 52 

44.64 

14.72 

44.57 

14.91 

44.51 

15.11 

47 

48 

45.65 

14.83 

45.59 

15.03 

45.52 

15.23 

45.45 

15.43 

48 

49 

46.60 

15.14 

46.54 

15.35 

46.47 

15.55 

46.40 

15.75     49 

50 

47.55 

15.45 

47.48 

15.66 

47.42 

15.87 

47.35 

16.07     50 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat.  ! 

o 

c 

^1 

72  Deg. 

71|  Deg. 

7HI 

)eg. 

1 
7U  Deg. 

1 

TRAVBKSE    TABr>F. 


39 


P 

51 

18  Deg. 

184  Deg. 

m  Deg. 

18|  Deg. 

1 
~51 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

48.29 

Dep. 
16.39 

48.50 

15.76 

48.43 

15.97 

48.36 

16.18 

53 

49.45 

16.07 

49.38 

16.28 

49.31 

16.50 

49.24 

16.71 

52 

53 

50.41 

16.38 

50.33 

16.60 

50.26 

16.82 

50.19 

17.04 

53 

54 

51.36 

16.69 

51.28 

16.91 

51.21 

17.13 

51.13 

17.36 

54 

55 '52.31 

17.00 

52.23 

17.22 

52.16 

17.45 

52.08 

17.68 

55 

56 

53.26 

17.30 

53.18 

17.. 54 

53.11 

17.77 

53.03 

18.00 

56 

57 

54.21 

17.61 

54.13 

17.85 

54.05 

18.09 

53.98 

18.32 

57 

58 

55.16 

17.92 

55.08 

18.16 

55.00 

18.40 

54.92 

18.64 

58 

59 

56.11 

18.23 

56.03 

18.48 

55.95 

18.72 

55.87 

18.96 

59 

60 
61 

67.06 

18.54 

56.98 

18.79 

56.90 

19.04 

56.82 

19.29 

60 

58.01 

18  85 

57.93 

19.10 

57.85 

19.36 

57.76 

19.61 

61 

62 

58.97 

19.16 

58.88 

19.42 

58.80 

19.67 

58.71 

19.93 

62 

63 

59.92 

19.47 

59.83 

19.73 

59.74 

19.99 

59.66 

20.25 

63 

64 

60.87 

19.78 

60.78 

20.04 

60.69 

20.31 

60.60 

20.57 

64 

65 

61.82 

20.09 

61.73 

20.36 

61.64 

20.62 

61.55 

20.89 

65 

66 

62.77 

20.40 

62.68 

20.67 

62.59 

20.94 

62.50 

21.22 

66 

67 

63.72 

20.70 

63.63 

20.98 

63.54 

21.26 

63.44 

21.54 

67 

68 

64.67 

21.01 

64.58 

21.30 

64.49 

21.58 

64.39 

21.86 

68 

69 

65.62 

21.32 

65.53 

21.61 

65.43 

21.89 

65.34 

22.18 

69 

70 
71 

66.57 

21.63 

66.48 

21.92 

66.38 

22.21 

66.29 

22.50 

70 
71 

67.53 

21.94 

67.43 

22.23 

67.33 

22.53 

67.23 

22.82 

72 

68.48 

22.25 

68.38 

22.55 

68.28 

22.85 

68.18 

23.14 

72 

73 

69.43 

22.56 

69.33 

22.86 

69.23 

23.16 

69.13 

23.47 

73 

74 

70.38 

22.87 

70.28 

23.17 

70.18 

23.48 

70.07 

23.79 

74 

76 

71.33 

23.18 

71.23 

23.49 

71.12 

23.80 

71.02 

24.11 

75 

76 

72.28 

23.49 

72.18 

23.80 

72.07 

24.12 

71.97 

24.43 

76 

77 

73.23 

23.79 

73.13 

24.11 

73.02 

24.43 

72.91 

24.75 

77 

78 

74.18 

24.10 

74.08 

24.43 

73.97 

24.75 

73.86 

25.07 

78 

79 

75.13 

24.41 

75.03 

24.74 

74.92 

25.07 

74.81 

25.39 

79 

80 
81 

76.08 
77.04 

24.72 
25.03 

75.98 

25.05 

75.87 

25.38 

75.75 

25.72 

80 

76.93 

25.37 

76.81 

25.70 

76.70 

26.04 

81 

82 

77.99 

25.34 

77.88 

25.68 

77.76 

26.02 

77.65 

26.36 

82 

83 

78.94 

25.65 

78.83 

25.99 

78.71 

26.34 

78.60 

26.68 

83 

84 

79.89 

25.96 

79.77 

26.31 

79.66 

26.65 

79.54 

27.00 

84 

85 

80.84 

26.27 

80.72 

26.62 

80.61 

26.97 

80.49 

27.. 32 

85 

86 

81.79 

26.58 

81.67 

26.93 

81.56 

27.29 

81.44 

27.64 

86 

87 

82.74 

26.88 

82.62 

27.25 

82.50 

27.61 

82.38 

27.97 

87 

88 

83.69 

27.19 

83.57 

27.56 

83.45 

27.92 

83.33 

28.29 

88 

89 

84.64 

27.50 

84.52 

27.87 

84.40 

28.24 

84.28 

28.61 

89 

90 
91 

85.60 

27.81 

85.47 

28.18 

85.35 

28.56 

85.22 

28.93 

90 

86.55 

28.12 

86.42 

28.50 

86.30 

28.37 

86.17 

29.25 

91 

92 

87.50 

28.43 

87.37 

28.81 

87.25 

29.19 

87.12 

29.57 

92 

93 

88.45 

28.74 

88.32 

29.12 

88.19 

29.51 

88.06 

29.89 

93 

94 

89.40 

29.05 

89.27 

29.44 

89.14 

29.83 

89.01 

30.22 

94 

95 

90.35 

29.36 

90.22 

29.75 

90.09 

30.14 

89.96 

.30.54 

95 

96 

91.30 

29.67 

91.17 

30.06 

91.04 

30.46 

1.0.91 

30.86 

96 

97 

92.25 

29.97 

92.12 

30.38 

91.99 

30.78 

91.85 

31.18 

97 

98 

93.20 

30.28 

93.07    30.69  1 

92.94 

31.10 

92.80 

31.50 

98 

99 

94.15 

30.59 

94.02 

31.00 

93.88 

31.41 

93.75 

31.82 

99 

100 

1 

5 

95.11 

30.90 

94.97 

31.32 

94.83 

31.73 

94.69 

32.14 

100 

a 

3 

Q 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat 

72  Deg. 

711  Deg. 

! 

711  Deg. 

7U  Deg. 

40 


TKAVFKSE    TARLF-. 


I 
r 

19  Deg. 

19i  Deg. 

19^  Deg. 

191  Deg. 

p 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

0.95 

0.33 

0.94 

0.33 

0.94 

0.33 

0.94 

0..34 

1 

2 

1.89 

0.65 

1.89 

0.66 

1.89 

0.67 

1.88 

0.68 

2 

3 

2.84 

0.98 

2.83 

0.99 

2.83 

1.00 

2  82 

1.01 

3 

4 

3.78 

1.30 

3.78 

1.32 

3.77 

1.34 

3.76 

1.36 

4 

5 

4.73 

1.63 

4.72 

1.65 

4.71 

1.67 

4.71 

1.69 

6 

6 

6.67 

1.95 

6.66 

1.98 

5.66 

2.00 

5.65 

2.03 

6 

7 

6.62 

2.28 

6.61 

2.31 

6.60 

2.34 

6.59 

2.. 37 

7 

8 

7.56 

2.60 

7.55 

2.64 

7.54 

2.67 

7.63 

2.70 

8 

9 

8.51 

2.93 

8.50 

2.97 

8.48 

3.00 

8.47 

3.04 

9 

10 

9.46 

3.26 

9.44 

3.30 

9.43 

3.34 

9.41 

3.38 

10 

11 

10.40 

3.58 

10.38 

3.63 

10.37 

3.67 

10.35 

3.72 

11 

12 

11.35 

3.91 

11.33 

3.96 

11.31 

4.01 

11.29 

4.06 

12 

13 

12.29 

4.23 

12.27 

4.29 

12.25 

4.. 34 

12.24 

4.39 

13 

14 

13.24 

4.56 

13.22 

4.62 

13.20 

4.67 

13.18 

4.73 

14 

15 

14.18 

4.88 

14.16 

4.95 

14.14 

5.01 

14.12 

5.07 

15 

16 

15.13 

5.21 

15.11 

5.28 

15.08 

6.34 

15.06 

5.41 

16 

17 

16.07 

5.53 

16.05 

5.60 

16.02 

6.67 

16.00 

5.74 

17 

18 

17.02 

6.86 

16.99 

5.93 

16.97 

6.01 

16.94 

6.08 

18 

19 

17.96 

6.19 

17.94 

6.26 

17.91 

6.34 

17.88 

6.42 

19 

20 

18.91 

6.51 

18.88 

6.59 

18.85 

6.68 

18.82 

6.76 

20 

21 

19.86 

6.84 

19.83 

6.92 

19.80 

7.01 

19.76 

7.10 

21 

22 

20.80 

7.16 

20.77 

7.25 

20.74 

7.34 

20.71 

7.43 

22 

23 

21.75 

7.49 

21.71 

7.58 

21.68 

7.68 
8.01 

21.65 

7.77 

23 

24 

22.69 

7.81 

22.66 

7.91 

22.62 

22.59 

8.11 

24 

25 

23.64 

8.14 

23.60 

8.24 

23.57 

8.35 

23.53 

8.45 

25 

26 

24.58 

8.46 

24.66 

8.57 

24.51 

8.68 

24.47 

8.79 

26 

27 

25.53 

8.79 

25.49 

8.90 

25.45 

9.01 

26.41 

9.12 

27 

28 

26.47 

9.12 

26.43 

9.23 

26.39 

9.35 

26.35 

9.46 

28 

29 

27.42 

9.44 

27.38 

9.56 

27.34 

9.68 

27.29 

9.80 

29 

30 
31 

28.37 

9.77 

28.32 
29.27 

9.89 
10.22 

28.28 

10.01 

28.24 

10.14 

30 

29.31 

10.09 

29.22 

10.. 35 

29.18 

10.48 

3i 

32 

30.26 

10.42 

30.21 

10.55 

30.16 

10.68 

30.12 

10.81 

32 

33 

31.20 

10.74 

31.15 

10.88 

31.11 

11.02 

31.06 

11.15 

33 

34 

32.15 

11.07 

32.10 

11.21 

32.05 

11.35 

32.00 

11.49 

34 

35 

33.09 

11.39 

33.04 

11.54 

32.99 

11.68 

32.94 

11.83 

35 

36 

34.04 

11.72 

33.99 

11.87 

33.94 

12.02 

33.88 

12.17 

36 

37 

34.98 

12.05 

34.93 

12.20 

34.88 

12.35 

34.82 

12.50 

37 

38 

35.93 

12.37 

35.88 

12.53 

35.82 

12.68 

35.76 

12.84 

38 

39 

36.88 

12.70 

36.82 

12.86 

36.70 

13.02 

36.71 

13.18 

39 

40 

37.82 

13.02 

37.76 
38.71 

13.19 
13.. 52 

37.71 

13.. 35 

37.65 

13.. 52 

40 

41 

38.77 

13.35 

38.05 

13.69 

38.59 

13.85 

41 

42 

39.71 

13.67 

39.65 

13.85 

39.59 

14.02 

39.53 

14.19 

42 

43 

40.66 

14.00 

40.60 

14.18 

40., 53 

14.35 

40.47 

14.53 

43 

44 

41.60 

14.32 

41.54 

14.51 

41.48 

14.69 

41.41 

14.87 

44 

45 

42.55 

14.65 

42.48 

14.84 

42.42 

15.02 

42.35 

15.21 

46 

46 

43.49 

14.98 

43.43 

15.17 

43.36 

15.36 

43.29 

15.54 

46 

47 

44.44 

15.30 

44.37 

15.. 50 

44.30 

15.69 

44.24 

15.88 

47 

48 

45.38 

15.63 

45.32 

16.83 

45.25 

16.02 

45.18 

16.22 

48 

49 

46.33 

16.95 

46.26 

16.15 

46.19 

16.36 

46.12 

16.56 

49 

50 

47.28 

16.28 

47.20 

16.48 

47.13 

16.69 

47.06 

16.90 

50 

1 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lai. 

i 

c 

s 

.52 

711 

>e. 

701  Deg. 

70  i  Deg. 

70J  Deg. 

TRAVEIlSfi   TABLE. 


41 


5 
1  ■ 

19  Deg. 

m  Deg. 

1 

19A  Dog. 

191  Deg. 

3 

51 

Lat.      Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

48.22 

16.60 

48.15 

16.81 

48.07 

17.02 

48.00 

17.23 

52 

49.17 

16.93 

49.09 

17.14 

49.02 

17.36 

48.94 

17.57 

52 

53 

50.11 

17.26 

50.04 

17.47 

49.96 

17.69 

49.88 

17.91 

53 

54 

51.06 

17.58 

50.98 

17.80 

50.90 

18.03 

.50.82 

18.25 

54 

55 

52.00 

17.91 

51.92 

18.13 

51.85 

18.36 

51.76 

18.59 

55 

56 

52.95 

18.23 

52.87 

18.46 

52.79 

18.69 

52.71 

18.92 

56 

57 

53.89 

18.56  1 

53.81 

18.79 

53.73 

19.03 

53.65 

19.26 

57 

58 

.54.84 

18.88 

54.76 

19.12 

54.67 

19.36 

54.59 

19.60 

58 

59 

55.79 

19.21 

55.70 

19.45 

55.62 

19.69 

55.53 

19.94 

59 

60 
61 

50.73 

19.53 

56.65 

19.78 

56.56 

20.03 

56.47 

20.27 

00 
61 

57 .  68 

19.86 

57.59 

20.11 

57.50 

20.36 

57.41 

20.61 

62 

58.62 

20.19 

58.53 

20.44 

58.44 

20.70 

58.35 

20.95 

62 

63 

.59.57 

20.51 

59.48 

20.77 

59.39 

21.03 

59.29 

21.29 

63 

64 

60.51 

20.84 

60.42 

21.10 

60.33 

21.361 

60.24 

21.63 

64 

65 

61.46 

21.16 

61.37 

21.43 

01.27 

21.70 

61.18 

21.96 

65 

66 

62.40 

21.49 

62.31 

21.76 

62.21 

22.03 

62.12 

22.30 

66 

67 

63.35 

21.81 

63.25 

22.09 

63.16 

22.37 

63.06 

22 .  64 

67 

68 

64.30 

22.14 

64.20 

22.42 

04.10 

22.70 

64.00 

22.98 

68 

69 

65.24 

22.40 

65.14 

22.75 

05.04 

23.03 

64.94 

23.32 

69 

70 
71 

66.19 

22.79 

66.09 

23.08 

65.98 

23.37 

65.88 

23.65 

70 

71 

67.13 

23.12 

07.03 

23.41 

66.93 

23.70 

66.82 

23.99 

72 

68.08 

23.44 

67.97 

23.74 

07.87 

24.03 

67.76 

24.33 

72 

73 

69.02 

23.77 

68.92 

24.07 

68.81 

24.37 

68.71 

24.67 

73 

74 

69.97 

24.09 

69.86 

24.40 

69.76 

24.70 

69.65 

25.01 

74 

75 

70.91 

24.42 

70.81 

24.73 

70.70 

25.04 

70.59 

25.34 

75 

76 

71.86 

24.74 

71.75 

25.06 

71.64 

25.37 

71.53 

25.68 

76 

77 

72.80 

25.07 

72.69 

25.39 

72.58 

25.70 

72.47 

26.02 

77 

78 

73.75 

25.39 

73.84 

25.72 

73.53 

26.04 

73.41 

26.36 

78 

79 

74.70 

25.72 

74.58 

26.05 

74.47 

26.37 

74.35 

26.70 

79 

80 
81 

75.64 

26.05 

75.53 

26.38 

75.41 

26.70 

75.29 

27.03 

80 
81 

76.59 

26.37 

76.47 

26.70 

76.35 

27.04 

76.24 

27.37 

82 

77.53 

26.70 

77.42 

27.03 

77.30 

27.37 

77.18 

27.71 

82 

83 

78.48 

27.02 

78.36 

27.36 

78.24 

27.71 

78.12 

28.05 

83 

84 

79.42 

27.35 

79.30 

27.69 

79.18 

28.04 

79.06 

28.39 

84 

85 

80.37 

27.67 

80.25 

28.02 

80.12 

28.37 

80.00 

28.72 

85 

86 

81.31 

28.00 

81.19 

28.35 

81.07 

28.71 

80.94 

29.06 

86 

87 

82-26 

28.32 

82.14 

28.68 

82.01 

29.04 

81.88 

29.40 

87 

88 

83.21 

28.65 

83.08 

29.01 

92.95 

29.37 

82.82 

29.74 

88 

89 

84.15 

28.98 

84.02 

29.34 

83.90 

29.71 

83.76 

30.07 

89 

90 
91 

85.10 

29.30 

84.97 

29.67 

84.84 

30.04 

84.71 

30.41 

90 

86.04 

29.63 

85.91 

30.00 

85.78 

30.38 

85.65 

.30.75 

91 

92 

86.99 ',29.95 

86.86 

30.33 

86.72 

30.71 

86.59 

31.09 

92 

93 

87.93 

30.28 

87.80 

30.66 

87.67 

31.04 

87.53 

31.43 

93 

94 

88.88 

30.60 

88.74 

30.99 

88.61 

31.38 

88.47 

31.76 

94 

95 

89.82 

30.93 

89.69 

31.32 

89.55 

31.71 

89.41 

32.10 

95 

96 

90.77 

31.25 

90.63 

31.65 

90.49 

32.05 

90.35 

32.44 

96 

97 

91.72 

31.58 

91.58 

31.98 

91.44 

32.38 

91.29 

32.78 

97 

98 

92.66 

31.91 

92.52 

32.31 

92.38 

32.71 

92.24 

33.12 

98 

99 

93.61 

32.23 

93.46 

32.64 

93.32 

33.05 

93.18 

33.45 

99 

100 

94.55 

32.56 

94.41 

32.97 

94.26 

33.38 

94.12 

33.79 

100 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

o 

1 

.2 

71  Deg. 

701  Deg. 

701  Deg. 

m  Deg. 

42 


TRAVERSE    TABLE. 


o 
~1 

i 

20 

Deg. 

20i  Deg. 

20i  Deg. 

20^ 

Deg. 

n 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

0.94 

0.34 

0.94 

0.35 

0.94 

0.35 

0.94 

0.35 

2 

1.88 

0.68 

1.88 

0.69 

1.87 

0.70 

1.87 

0.71 

2 

3 

2.82 

1.03 

2.81 

1.04 

2.81 

1.05 

2.81 

1.06 

3 

4 

3.76 

1.37 

3.75 

1.38 

3.75 

1.40 

3.74 

1.42 

4 

5 

4.70 

1.71 

4.69 

1.73 

4.68 

1.75 

4.68 

1.77 

6 

6 

5.64 

2.05 

5.63 

2.08 

5.62 

2.10 

5.61 

2.13 

6 

7 

6.58 

2.39 

6.57 

2.42 

6.56 

2.45 

6.55 

2.48 

7 

8 

7.52 

2.74 

7.51 

2.77 

7.49 

2.80 

7.48 

2.83 

8 

9 

8.46 

3.08 

8.44 

3.12 

8.43 

3.15 

8.42 

3.19 

9 

10 
11 

9.40 

3.42 

9.38 

3.46 

9.37 

3.50 

9.35 

3.. 54 

10 
11 

10.34 

3.76 

10.32 

3.81 

10.30 

3.85 

10.29 

3.90 

12 

11.28 

4.10 

11.26 

4.15 

11.24 

4.20 

11.22 

4.25 

12 

13 

12.22 

4.45 

12.20 

4.50 

12.18 

4.55 

12.16 

4.61 

13 

14 

13.16 

4.79 

13.13 

4.85 

13.11 

4.90 

13.09 

4.96 

14 

15 

14.10 

5.13 

14.07 

5.19 

14.05 

5.25 

14.03 

5.31 

15 

16 

15.04 

5.47 

15.01 

5.54 

14.99 

5.60 

14.96 

5.67 

16 

17     15.97 

5.81 

15.95 

5.88 

15.92 

5.95 

15.90 

6.02 

17 

18     16.91 

6.16 

16.89 

6.23 

16.86 

6.30 

16.83 

6.38 

18 

19 

17.85 

6.50 

17.83 

6.58 

17.80 

6.65 

17.77 

6.73 

19 

20 
21 

18.79 

6.84 

18.76 

6.92 

18.73 

7.00 

18.70 

7.09 

20 
21 

19.73 

7.18 

19.70 

7.27 

19.67 

7.35 

19.64 

7.44 

22 

20.67 

7.52 

20.64 

7.61 

20.61 

7.70 

20.. 57 

7.79 

M'lO 

23 

21.01 

7.87 

21.58 

7.96 

21.54 

8.05 

21.51 

8.15 

23 

24 

22.. 55 

8.21 

22.52 

8.31 

22.48 

8.40 

22.44 

8.50 

24 

25 

23.49 

8.55 

23.45 

8.65 

23.42 

8.76 

23.38 

8.86 

25 

26 

24.43 

8.89 

24.39 

9.00 

24.35 

9.11 

24.31 

9.21 

26 

27 

25.37 

9.23 

25.33 

9.35 

25.29 

9.46 

25.25 

9.57 

27 

28 

26.31 

9.58 

26.27 

9.69 

26.23 

9.81 

26.18 

9.92 

28 

29 

27.25 

9.92 

27.21 

10.04 

27.16 

10.16 

27.12 

10.27 

29 

30 
31 

28.19 

10.26 

28.15 

10.38 

28.10 

10.51 

28.05 

10.63 

30 
31 

29.13 

10.60 

29.08 

10.73 

29.04 

10.86 

28.99 

10.98 

32 

30.07 

10.94 

30.02 

11.08 

29.97 

11.21 

29.92 

11.34 

32 

33 

31.01 

11.29 

30.96 

11.42 

30.91 

11.56 

.30.86 

11.69 

33 

34 

31.95 

11.63 

31.90 

11.77 

31.85 

11.91 

31.79 

12.05 

34 

35    32.89 

11.97 

32.84 

12.11 

.32.78 

12.26 

32.73 

12.40 

35 

36 

33.83 

12.31 

33.77 

12.46 

33.72 

12.61 

33.66 

12.75 

36 

37 

34.77 

12.65 

34.71 

12.81 

34.66 

12.96 

34.60 

13.11 

37 

38 

35.71 

13.00 

35.65 

13.15 

35.59 

13.31 

35.54 

13.46 

38 

39 

36.65 

13.34 

36.59 

13.50 

36.53 

13.66 

36.47 

13.82 

39 

40 

41 

37.59 

13.68 

37.53 

13.84 

37.47 

14.01 

37.41 

14.17 

40 
41 

38.53 

14.02 

38.47 

14.19 

38.40 

14.36 

38.34 

14.53 

42 

39.47 

14.36 

39.40 

14.54 

39.34 

14.71 

39.28 

14.88 

42 

43 

40.41 

14.71 

40.34 

14.88 

40.28 

15.06 

40.21 

15.23 

43 

44 

41.35 

15.05 

41.28 

15.23 

41.21 

15.41 

41.15 

15.59 

44 

45 

42.29 

15.39 

42.22 

15.58 

42.15 

15.76 

42.08 

15.94 

45 

46  143.23 

15.73 

43.16 

15.92 

43.09 

16.11 

43.02 

16., 30 

46 

47  i44.17 

16.07  !i  44.09 

16.27 

44.02 

16.46 

43.95 

16.65 

47 

48 

45.11 

16.42  i!  45.03 

16.61 

44.96 

16.81 

44.89 

17.01 

48 

49 

46.04 

16.76  !|  45.97 

16.96 

45.90 

17.16 

45.82 

17.36 

49 

50 

s 

c 

X 

46.98 

17.10 

46.91 

17.31 

46.83 

17.51 

46.76 

17.71 

50 

o 

c 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

69^ 

Lat. 
Dfg 

70] 

Deg. 

69|  Deg. 

69i  Deg. 

TRAVERSE    TABLE. 


43 


d 

% 

p 

3 
o 
a 

"51 

20  Deg. 

20t  Deg. 

20A  Deg. 

201  Deg. 

O 

3 
§ 

51 

Lat. 

Dep. 

Lat. 

Dep. 
17  .'65 

Lat. 

Dep. 

Lat. 

Dep. 

47.92 

17.44 i 

47.35 

47.77 

17.86 

47.69 

18.07 

52 

48.86 

17.79  1 

48.79 

18.00 

48.71 

18.21 

48.63 

18.42 

52 

53 

49.80 

18.13 

49.72 

18.34 

49.64 

18.56 

49.56 

18.78 

53 

54 

50.74 

18.47  1 

50.66 

18.69 

50.58 

18.91 

50.50 

19.13 

54 

55 

51.68 

18.81  1 

51.60 

19.04 

51.52 

19.26 

51.43 

19.49 

55 

56 

52.62 

19.15! 

52.54 

19.38 

52.45 

19.61 

52.37 

19.84 

56 

57 

53.56 

19.50 

63.48 

19.73 

53.39 

19.96 

53.30 

20.19 

57 

58 

54.50 

19.84 

54.42 

20.07 

54.33 

20.31  ! 

54.24 

20.55 

58 

59 

55.44 

20.18 

55.35 

20.42 

55.26 

20.66  1 

55.17 

20.90 

59 

60 

61 

56.38 

20.. 52 

56.29 

20.77 

56.20 
57.14 

21.01  1 
21.36  1 

56.11 

21.26 

60 
61 

57.32 

20.86 

57.23 

21.11 

.57.04 

21.61 

62 

58.26 

21.21 

58.17 

21.46 

58.07 

21.71 

57.98 

21.97 

62 

63 

59.20 

21.55  1 

59.11 

21.81 

59.01 

22.06 

58.91 

22.32 

63 

64 

60.14 

21.89 

60.04 

22.15 

59.95 

22.41 

59.85 

22.67 

64 

65 

61.08 

22.23 

60.98 

22.50 

60.88 

22.76 

60.78 

23.03 

65 

66 

62.02 

22.57 

61.92 

22.84 

61.82 

23.11 

61.72 

23.33 

66 

67 

62.96 

22.92 

62.86 

23.19 

62.76 

23.46 

62.65 

23.74 

67 

68 

63.90 

23.26 

63.80 

23.54 

63.69 

23.81 

63.59 

24.09 

68 

69 

64.84 

23.60 

64.74 

23.88 

64.63 

24.16 

64.52 

24.45 

69 

70 
71 

65.78 
66.72 

23.94 

24.28 

65.67 

24.23 

,65.57 

24.51 

65.46 

24.80 

70 
71 

66.61 

24.5? 

,66.50 

24.86 

66.39 

25.15 

72 

67.66 

24.63 

67.55 

24.92 

167.44 

25.21 

67.33 

25.51 

72 

73 

63.60  j  24.97 

63.49 

25.27 

163.33 

25.57 

68.26 

25.86 

73 

74 

69.54    25.31  : 

69.43 

25.61 

69.31 

25.92 

69.20 

26 .  22 

74 

75 

70.48    25.65 

70.36 

25.96 

70.25 

26.27 

|70.14 

26.57 

75 

76 

71.42,25.99 

71.30 

26.30 

71.19 

26.62 

! 71.07 

28.93 

76 

77 

72.36 

26.34 

72.24 

26.65 

72.12 

26.97 

72.01 

27.28 

77 

78 

73.30 

26.68 

73.18 

27.00 

73.06 

27.32 

! 72.94 

27.63 

78 

79 

74.24 

27.02 

74.12 

27.34 

74.00 

27.67 

1 73.88 

27.99 

79 

80 
81 

75.18 

27.36 

75.06  {  27.69 

74.93 

28.02 

i 74.81 

28.-34 

80 
81 

76.12 

27.70 

75.99 

28.04 

75.87  1 28.37 

j 75.75 

28.70 

S3 

77.05 

28.05 

76.93 

23.33 

76.81 

23.72 

'76.68 

29.05 

82 

>^3 

77.99 

28.39 

77.87 

28.73 

77.74 

29.07 

! 77.62 

29.41 

83 

84 

78.93 

28.73 

78.81 

29.07 

78.68 

29.42 

73.55 

29.76 

84 

85 

79.87 

29.07 

79.75 

29.42 

79.62 

29.77 

!  79.49 

30.11 

85 

86 

80.81 

29.41 

80.68 

29.77 

80.55 

30.12 

80.42 

30.47 

86 

87 

81.75 

29.76 

81.62 

30.11 

81.49 

30.47 

;81.36 

30.82 

87 

88 

82.69 

30.10 

82.56 

30.46 

82.43 

30.82 

82.29 

31.18 

88 

89 

83.63 

30.44 

83.50 

30.80 

83.36 

31.17 

83.23 

31., 53 

89 

90 
91 

84.57 

30.78 

84.44 

31.15 

84.30 

31.52 

[84.16 

31.89 

90 
91 

85.51 

31.12 

85.38 

31.50 

85.24 

31.87 

[85.10 

32.24 

92 

86.45 

31.47 

86.31 

31.84 

86.17 

32.22 

86.03 

32.59 

92 

93 

87.39. 31.81 

87.25 

32.19 

87.11 

32.57 

86.97 

32.93 

93 

94 

88.33'  32.15 

88.19 

32.54 

88.05 

32.92 

87.90 

33.30 

94 

95 

89.27,  32.49 

89.13 

32.88 

88.98 

33.27 

88.84 

33.66 

95 

96 

90.21 

32.83 

90.07 

33.23 

89.92 

33.62 

89.77 

34.01 

96 

97 

91.15 

33.18 

91.00 

33.57 

90.86 

33.97 

90.71 

34.37 

97 

98 

92.09 

33.52 

91.94 

33.92 

91.79 

34.32 

91.64 

.34.72 

98 

99 

93.03 

33.86 

92.88 

34.27 

92.73 

34.67 

92.58 

35.07 

99 

100 

i 

s 

.2 

Q 

1 93.97 

34.20 

93.82 

34.61 

93.67 

35.02 

93.51 

35.43 

100 

u 

c 

1   Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

!      70  Deg. 

69|  Deg. 

69^  Deg 

69i  Deg 

44 


TRAVEKSE    TAHLE. 


a 
a 
a 

21 
Lat. 

Deg. 
Dep. 

2H  Deg. 

211 

Deg. 

21|  Deg. 

g 

3 

2 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

0.93 

0.36 

0.93 

0.36 

0.93 

0.37 

0.93 

0.37 

1 

ii 

1.87 

0.72 

1.86 

0.72 

1.86 

0.73 

1.86 

0.74 

2 

3 

2.80 

1.08 

2.80 

1.09 

2.79 

1.10 

2.79 

1.11 

3 

4 

3.73 

1.43 

3.73 

1.45 

3.72 

1.47 

3.72 

1.48 

4 

6 

4.67 

1.79 

4.66 

1.81 

4.65 

1.83 

4.64 

1.85 

5 

6 

5.60 

2.15 

6.59 

2.17 

5.58 

2.20 

6.57 

2.22 

6 

7 

6.54 

2.51 

6.52 

2.54 

6.51 

2.57 

6.50 

2.59 

7 

8 

7.47 

2.87 

7.46 

2.90 

7.44 

2.93 

7.43 

2.96 

8 

9 

8.40 

3.23 

8.39 

3.26 

8.37 

3.30 

8.36 

3.34 

9 

10 

9.34 

3.58 

9.32 

3.62 

9.30 

3.67 

9.29 

3.71 

10 
11 

U 

10.27 

3.94 

10.25 

3.99 

10.23 

4.03 

10.22 

4.08 

]2 

11.20 

4.30 

11.18 

4.35 

11.17 

4.40 

11.15 

4.45 

12 

13 

13.14 

4.66 

12.12 

4.71 

12.10 

4.76 

12.07 

4.82 

13 

14 

13.07 

5.02 

13.05 

5.07 

13.03 

5.13 

13.00 

5.19 

14 

15 

14.00 

5.38 

13.98 

5.44 

13.96 

5.. 50 

13.93 

5.56 

15 

IG 

14.94 

5.73 

14.91 

5.80 

14.89 

5.86 

14.86 

5.93 

16 

17 

15.87 

6.09 

15.84 

6.16 

15.82 

6.23 

15.79 

6.30 

17 

18 

16.80 

6.45 

16.78 

6.52 

16.75 

6.60 

16.72 

6.67 

18 

19 

17.74 

6.81 

17.71 

6.89 

17.68 

6.96 

17.65 

7.04 

19 

20 

18.67 

7.171 

18.64 

7.25 

18.01 

7.33 

18.. 58 

7.41 

20 

21 

19.61 

7.53 

19.57 

7.61 

19.54 

7.70 

19.50 

7.78 

21 

22 

20.. 54 

7.88 

20.50 

7.97 

20.47 

8.06 

20.43 

8.15 

22 

23 

21.47 

8.24  1 

21.44 

8.34 

21.40 

8.43  1 

21.36 

8.52 

23 

24 

22.41 

8.60  1 

22.37 

8.70 

22.33 

8.80 

22.29 

8.89 

24 

25 

23.34 

8.96 

23.30 

9.06 

23.26 

9.16 

23.22 

9.26 

25 

26 

24.27 

9.32 

24.23 

9.42 

24.19 

9.53 

24.15 

9.63 

26 

27 

25.21 

9.68 

25.16 

9.79 

25.12 

9.90 

25.08 

10.01 

27 

28 

26.14 

10.03 

26.10 

10.15 

26.05 

10.26 

26.01 

10.38 

28 

29 

27.07 

10., 39 

27.03 

10.51 

26.98 

10.63 

26.94 

10.75 

29 

30 
31 

28.01 

10.75 

27.96 

10.87 

27.91 

11.00 

27.86 

11.12 

30 

28.94 

11.11 

28.89 

11.24 

28.84 

11.36 

28.79 

11.49 

31 

32 

29.87 

11.47 

29.82 

11.60 

29.77 

11.73 

29 .  72 

11.86 

32 

33 

30.81 

11.83 

30.76 

11.96 

30.70 

12.09 

30.65 

12.23 

33 

34 

31.74 

12.18 

31.69 

12.32 

31.63 

12.46 

31.58 

12.60 

34 

35 

32.68 

12.54 

32.62 

12.69 

32.56 

12.83 

32.51 

12.97 

35 

36 

33.61 

12.90 

33.55 

13.05 

33.50 

13.19 

33.44 

13.34 

36 

37 

34.54 

13.26 

34.48 

13.41 

34.43 

13.. 56 

34.37 

13.71 

37 

38 

35.48 

13.62 

35.42 

13.77 

35.36 

13.93 

35.29 

14.08 

38 

39 

36.41 

13.98 

36.35 

14.14 

36.29 

14.29 

36.22 

14.45 

39 

40 

41 

37.34 

14.33 

37.28 

14.50 

37.22 

14.66 

37.15 

14.82 

40 
41 

38.28 

14.69 

38.21 

14.86 

38.15 

15.03 

38.08 

15.19 

42 

39.21 

15.05 

39.14 

15.22 

39.08 

15.09 

39.01 

15.56 

42 

43 

40.14 

15.41 

40.08 

15.58 

40.01 

15.76 

39.94 

15.93 

43 

44 

41.08 

15,77 

41.01 

15.95 

40.94 

16.13 

40.87 

16.30 

44 

45 

42.01 

16.13 

41.94 

16.31 

41.87 

16.49 

41.80 

16.68 

45 

46 

42.94 

16.48 

42.87 

16.67 

42.80 

16.86 

42.73 

17.05 

46 

47 

43. SS 

16.84 

43.80 

17.03 

43.73 

17.23 

43.65 

17.42 

47 

48 

44.81 

17.20 

44.74 

17.40 

44.66 

17.59 

44.58 

17.79 

48 

49 

45.75 

17.56 

45.67 

17.76 

45.59 

17.96 

45.51 

18.16 

49 

50^ 

.2 

46.68 

17.92 

46.60 

18.12 

46.52 

18.33 

46.44 

18.53 

50 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

i 

c 

i 

69] 

Deg. 

68f  Deg. 

681 

Deg. 

1 

68i  Deg. 

TK>^  VERSE    TABLE. 


45 


'51 

21  Deg. 

2U  Deg. 

21A  Deg. 

211  De.. 

O 

a 
? 

5: 

Lat. 

Dep. 

18.28 

Lat. 

Dep. 

Lat.      Dep. 

Lat. 

47.37 

Dep. 
18.90 

47.61 

47.53 

18.48 

47.45 

18.69 

52 

48.55 

18.64 

48.46 

18.85 

I48..38 

19.06 

48.30 

19.27 

52 

63 

49.48 

18.99 

49.40 

19,21 

49.31 

19.42 

49.23 

19.64 

53 

64 

50.41 

19.35 

50.33 

19.57 

50.24 

19.79 

50.16 

20.01 

54 

55 

51.35 

19.71 

51.26 

19.93 

51.17 

20.16 

51.08 

20.38 

55 

56 

52  28 

20.07 

52.19 

20.30 

.52.10 

20.52 

52.01 

20.75 

58' 

57 

53  21 

20.43 

53.12 

20.66 

53.03 

20.89 

.52.94 

21.12 

57 

58 

54.15 

20.79 

54.06 

21.02 

53.96 

21.26 

53.87 

21.49 

58 

59 

55.08 

21.14 

54.99 

21.38 

54.89 

21.62 

,54.80 

21.86 

59 

GO 
61 

56.01 

21.50 

55.92 

21.75 

55.83 

21.99 

55.73 

22.23 

60 

56.95 

21.86 

58.85 

22.11 

58.78 

22.36 

56.66 

22.60 

81 

62 

57.88 

22.22 

57.78 

22.47 

57.69 

22.72 

57.59 

22,97 

62 

63 

58.82 

22.58 j 

58.72 

22.83 

58.62 

23.09 

.58.52 

23.35 

63 

64 

59.75 

22.94 

59.65 

23.20 

59.55 

23.40 

59.44 

23.72 

84 

65 

60.68 

23.29 

60.. 58 

23.56 

60.48 

23.82 

60.37 

24.09 

85 

66 

61.62 

23.65  1 

61.51 

23.92 

01.41 

24.19 

61.30 

24.46 

66 

07 

62.55 

24.01 

62.44 

24.28 

62.34 

24.. 56 

62.23 

24.83 

67 

68 

63.48 

24.37 

63.38 

24.65 

83.27 

24.92 

63.16 

25.20 

68 

69 

64.42 

24.73 

64.31 

25.01 

64.20 

25.29 

64.09 

25.57 

69 

70 
"71 

65.35 

25.09 

25.44  1 

65.24 

25.37 

65.13 

25.66 

65.02 

25.94 

70 
71 

6  b.  28 

66.17 

25.73 

! 66.06 

26.02 

65.95 

26.31 

72 

67.22 

25.80 

67.10 

26.10 

166.99 

26.39 

68.87 

26.68 

72 

73 

68.15 

26.16 

68.04 

26.46 

67.92 

28.75 

87.80 

27.05 

73 

74 

69.08 

26.. 52 

68.97 

26.82 

68.85 

27.12 

68.73 

27.42 

74 

75 

70.02 

26.88 

69.90 

27.18 

69.78 

27.49 

69.68 

27.79 

75 

76 

70.95 

27.24 

70.83 

27.55 

70.71 

27.85 

70.59 

28.16 

76 

77 

71.89 

27.59 

71.76 

27.91 

71.64 

28.22 

71.52 

28.53 

77 

78 

72.82 

27.95 

72.70 

28.27 

72.57 

28.59 

72.45 

28.90 

78 

79 

73.75 

28.31 

73.63 

28.63 

73.50 

28.95 

73.38 

29.27 

79 

80 
81 

74.69 

28.67 

74.56 

29.00 

74.43 

29.32 
29.89 

74.30 

29.84 

80 

75.62 

29.03 

75.49 

29.36 

75.38 

75.23 

30.02 

81 

82 

76.. 55 

29.39 

76.42 

29.72 

76.29 

30.05 

78.16 

30.39 

82 

83 

77.49 

29.74 

77.36 

30.08 

77.22 

30.42 

77.09 

30.76 

83 

84 

78.42 

30.10 

78.29 

30.44  !|  78.16 

30.79 

78.02 

31.13 

84 

85 

79.35 

30.46 

79.22 

30.81   179.09 

31.15 

78.95 

31.50 

85 

86 

80.29 

30.82 

80.15 

31.17     80.02 

31.52 

79.88 

31.87 

86 

87 

81.22 

31.18 

81.08 

31.53  ii  80.95 

31.89 

80.81 

32.24 

87 

88 

82.10 

31  54 

82.02 

31.89     81.88 

32.25 

81.74 

32.61 

88 

89 

83.09 

31.89 

82.95 

32.28  !  82.81 

32.62  i'  82.66 

32.98 

r.9 

90 
91 

84.02 

32.25 

83.88 

32.62     83.74 

32.99  , 83.59 

33.35 
33 .  72 

90 
'91 

84.96 

32.61 

84.81 

32.98  -84.07 

33.35  i 84.52 

92 

85.89 

32.97 

85.74 

33.34     85.60 

33.72  i;  85.45 

34.09 

92 

93 

86.82 

33.33 

86.68 

33.71     86.53 

34.08     86. 3S 

34.48 

.^3 

94 

87.76 

33.89 

87.61 

34.07     87.46 

34.45  i  87.31 

34.83 

94 

95 

88.69 

34.04 

j  88.. 54 

34.43     88.39 

34.82  1  88.24 

35.20 

95 

96 

89.62 

34.40 

89.47 

34.79     89.32 

35.18  ,89.17 

35.57 

98 

97 

90.. 56 

34.76 

90.40 

35.18     90.25 

35.55  ii  90.09 

35.94 

97 

98 

91.49 

35.12 

91.34 

35. .52     91.18 

35.92     91.02 

30.31 

98 

99 

92.42 

35.48 

92.27 

35.88     92.11 

36.28  ;  91.95 

36.69 

99 

100 

O 

c 

93.36 

35.84 

93.20 

36.24 

93.04    36.85 
Dep.  1    Lat. 

68^  Deg. 

; 92.88 

37.00 

100 

Dep. 

Lat. 

Dep. 

Lat. 

:   Dep. 

Lat. 

a 
Q 

69. 

Deg. 

681 

Deg. 

j      68i 

'1 

Dog. 

20 


u> 


TRAVERSE    TABLE, 


I 

3 
? 
1 

22  Deg. 

22i  Dog. 

221 

Deg. 

22t  Deg. 

5 

go' 

3 
0 
? 

Lat. 

Dep. 

Lat. 

Dep. 

Lat.  1 

Dep. 

Lat. 

Dep. 

0.93 

0.37 

0.93 

0.38 

0.92 

0.38 

0.92 

0.39 

2 

1.85 

0.75 

1.85 

0.76 

1.85 

0.77 

1.84 

0.77 

2 

3 

2.78 

1.12 

2.78 

1.14 

2.77 

1.15 

2.77 

1.16 

3 

4 

3.71 

1.50 

3.70 

1.51 

3.70 

1.53 

3.69 

1.55 

4 

5 

4.64 

1.87 

4.63 

1.89 

4.62 

1.91 

4.61 

1.93 

5 

.6 

5.56 

2.25 

5.55 

2.27 

5.54 

2.30 

5.53 

2.32 

6 

7 

6.49 

2.62 

6.48 

2.65 

6.47 

2.68 

6.40 

2.71 

7 

8 

7.42 

3.00 

7.40 

3.03 

7.39 

3.06 

7.38 

3.09 

8 

9 

8.34 

3.37 

8.33 

3.41 

8.31 

3.44 

8.30 

3.48 

9 

10 
11 

9.27 

3.75 

9.26 

3.79 

9.24 

3.83 

9.22 

3.87 

10 

10.20 

4.12 

10.18 

4.17 

10.16 

4.21 

10.14 

4.25 

11 

12 

11.13 

4.50 

11.11 

4.54 

11.09 

4.59 

11.07 

4.64 

12 

13 

12.05 

4.87 

12.03 

4.92 

12.01 

4.97 

11.99 

5.03 

13 

14 

12.98 

5.24 

12.96 

5.30 

12.93 

5.36 

12.91 

5.41 

14 

15 

13.91 

5.62 

13.88 

5.08 

13.86 

5.74 

13.83 

5.80 

15 

16 

14.83 

5.99 

14.81 

6.06 

14.78 

6.12 

14.76 

6.19 

16 

17 

15.76 

6.37 

15.73 

6.44 

15.71 

6.51 

15.68 

6.. 57 

17 

18 

16.69 

6.74 

16.66 

6.82 

16.63 

6.89 

16.60 

6.96 

18 

19 

17.62 

7.12 

17.59 

7.19 

17.55 

7.27 

17.52 

7.35 

19 

20 
21 

18.54 

7.49 

18.51 

7.57 

18.48 

7.65 

18.44 

7.73 

20 

19.47 

7.87 

19.44 

7.95 

19.40 

8.04 

19.37 

8.12 

21 

22 

20.40 

8.24 

20.36 

8.33 

20.33 

8.42 

20.29 

8.51 

^2 

23 

21.33 

8.62 

21.29 

8.71 

21.25 

8.80 

21.21 

8.89 

23 

24 

22.25 

8.99 

22.21 

9.09 

22.17 

9.18  '22.13 

9.28 

24 

25 

23.18 

9.37 

23.14 

9.47' 

23.10 

9.57  i 23.05 

9.67 

25 

26 

24.11 

9.74 

24.06 

9.84 

24.02 

9.95  123.98 

10.05 

26 

27 

25.03 

10.11 

24.99 

10.22 

24.94 

10.33  : 24.90 

10.44 

27 

28 

25.96 

10.49 

25.92 

10.60 

25.87 

10.72  1  25.82 

10.83 

28 

20 

26.89  '  10.86 

26.84 

10.98 

26.79 

11.10  1  26.74 

11.21 

29 

30 

27.82  i  11.24 

27.77 

11. .36 

27.72 

11.48 i  27.67 

11.60 

30 

31 

28.74  1  11.61 

28.69 

11.74 

28.64 

11.86  i|28.59 

11.99 

31 

32 

29.67  11.99 

29.62 

12.12 

29.56 

12.25  |!  29.51 

12.37 

32 

33 

.•50.60  i  12.36 

30.. 54 

12.50 

30.49 

12.63  30.43 

12.76 

33 

34 

31.52  !  12.74 

31.47 

12.87 

31.41 

13.01  t:  31.35 

13.15 

34 

35 

32.45  !  13.11 

32.39 

13.25 

32.34 

13.39  1132.28 

13.53 

35 

36 

33.33  1  13.49 

33.32 

13.63 

33.26 

13.78  133.20 

13.92 

36 

37 

34.31  1  13.86 

34.24 

14.01 

34.18 

14.16 

134.12 

14.31 

37 

38 

35.23  14.24 

35.17 

14.39 

35.11 

14.54 

35.04 

14.70 

38 

39 

36.16  14.61 

36.10 

14.77 

36.03 

14.92 

35.97 

15.08 

39 

40 

37.09  !  14.98 

37.02 

15.15 

36.96 

15.31 

36.89 

15.47 

40 

4! 

38.01  15.36 

37.95 

15.52  |i  37.88 

15.69 

37.81 

15.86 

41 

42 

.38.94  ;  15.73 

38.87 

15.90 

38.80 

16.07 

138.73 

16.24 

42 

43 

39.87  16.11 

39.80 

16.28 

39 .  73 

16.46 

! 39.65 

16.63 

43 

44 

40.80  '  16.48 

40.72 

16.66 

40.  C5 

16.84  1140.58 

17.02 

44 

45 

41.72 

16.86 

41.65 

17.04 

41.57 

17.22  41.50 

17.40 

45 

46 

42.65 

17.23 

42.57 

17.42 

42.50 

17.60  ,42.42 

17.79 

46 

47 

43.58 

17.61 

43.50 

17.80 

43.42 

17.99 

43.31 

18.18 

47 

48  144.50 

17.98 

44.43 

18.18 

44.35 

18.37 

44.27 

18.56 

48 

49  145.43 

, 18.36 

45.35 

18.55 

45.27 

18.75 

45.19 

18.95 

49 

50 

46.36 

18.73 

46.28 

18.93 

46.19 

19.13 

46.11 

19.34 

60 

§ 

c: 

10 

Dep. 

1  Lat. 

Dep. 

L:.t, 

Dep. 

Lat.  i|  Dep. 

Lat. 

© 
0 
a 

1 

68  Dog. 

67! 

Deg. 

C71 

1 

Deg. 

67i 

Deg. 

TRAVEKSE    TABLE. 


47 


c 

g 
? 

61 

22  Deg. 

22i  Deg.      1 

22A  Deg. 

221  Deg. 

a 

s 
51     1 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

47.29 

19.10 

47.20 

19.31 

47.12 

19.52 

47.03 

19.72 

52 

48.21 

19.48 

48.13 

19.69 

48.04 

19.90 

47.95 

20.11 

52 

53 

49.14 

19.85 

49.05 

20.07 

48.97 

20.28 

48.88 

20.50 

53 

64 

50.07 

20.23 

49.98 

20.45 

49.89 

20.66 

49.80 

20.88 

54 

55 

51.00 

20.60 

50.90 

20.83 

50.81 

21.05 

.50.72 

21.27 

55 

56 

51.92 

20.98 

51.83 

21.20 

51.74 

21.43 

51.64 

21.66 

56 

57 

52.85 

21.35 

52.76 

21.. 58 

.52.66 

21.81 

52.57 

'7,2.04 

57 

58 

53.78 

21.73 

53.68 

21.96 

53.59 

22.20 

.53.49 

22.43 

58 

59 

54.70 

22.10 

54.61 

22.34 

54.51 

22.58 

.54.41 

22.82 

59 

60 
61 

55.63 

22.48 

55.53 

22.72 

55.43 
56.36 

22.96 

55.33 

23.20 

60 

61 

.56.56 

22.85 

56.47 

23.10 

23.34 

56.25 

23.59 

62 

57.49 

23.23 

57.38 

23.48 

57.28 

23.73 

57.18 

23.98 

62 

63 

58.41 

23.60 

58.31 

23.85 

58.20 

24.11 

58.10 

24.38 

63 

64 

.59.34 

23.97 

.59.23    24.23  1 

59.13 

24.49  1 

59.02 

24.75 

64 

65 

60.27 

24.35 

60.16 

24.61 

60.05 

24.87 

59.94 

25.14 

65 

66 

61.19 

24.72 

61.09 

24.99 

60.98 

25.26 

60.87 

25.52 

66 

67 

62.12 

25.10 

62.01 

25.37 

61.90 

25.64 

61.7^ 

25.91 

67 

68 

63.05 

25.47 

62.94 

25 .  75 

62.82 

26.02 

62.71 

26.30 

^I 

69 

63.98 

25.85 

63.86 

26.13 

63.75 

26.41 

63.63 

26.68 

69 

70 
71 

64.90 

26.22 

64.79 

26.51 

64.67 

26.79 

64.55 

27.07 

70 
71 

65.83 

26.60 

65.71 126.88 

65.60 

27.17 

65.48 

27.46 

72 

66.76 

26.97 

66.64 

27.26 

66  52 

27.55 

66.40 

27.84 

72 

73 

67.68 

27.35 

67.56 

27.64 

67.44 

27.94 

67.32 

28.23 

73 

74 

68.61 

27.72 

68.49 

28.02 

68.37 

28.32 

68.24 

28.62 

74 

75 

69.54 

28.10 

69.42 

28.40 

69.29 

28.70 

69.17 

29.00 

^^ 

76 

70.47 

28.47 

70.34 

28.78 

70.21 

29.08 

70.09 

29.39 

76 

77 

71.39 

28.84 

71.27 

29.16 

71.14 

29.47 

71.01 

29.78 

77 

78 

72.32 

29.22 

72.19 

29.53 

72.06 

29.85:171.93 

30.16 

78 

79 

73.25 

29.59 

73.12 

29.91 

72.99 

30.23 

72.85 

30.55 

I^ 

80 
81 

74.17 

29.97 

74.04 

30.29 

73.91 

30.61 

73.78 

30.94 

80 

75.10 

30.34 

74.97 

30.67 

74.83 

31.00 

74.70 

31.32 

82 

76.03 

30.72 

75.89 

31.05 

75.76 

31.38 

75.62 

31.71 

82 

83 

76.96 

31.09 

76.82 

31.43 

76.68 

31.76 

76.54 

,32.10 

1    83 

84 

77.88 

31.47 

77.75 

31.81 

77.61 

32.15 

77.46 

32.48 

84 

85 

78.81 

31.84 

78.67 

32.19 

78.53 

32.53 

78.39 

32.87 

85 

86 

79.74 

32.22 

79.60 

32.56 

79.45 

32.91 

79.31 

33.26 

86 

87 

80.60 

32.59 

80.52 

32.94 

80.38 

33.20 

80.23 

33.64 

i    l^ 

88 

81.59 

32.97 

81.45 

33.32 

81.30 

33.68 

81.15 

34.03 

88 

89 

82.52 

33.34 

82.37 

33.70 

82.23 

34.06 

82.08 

34.42 

89 

90 
91 

83.45 

33.71 

83.30 

34.08 

83.15 

34.44 

83.00 

34.80 

90 

i    91 

84.37 

34.09 

9^1.22 

34.46 

84.07 

34.82 

83.92 

35.19 

92 

85.30 

34.46 

85.15  1  34.84 

85.00 

35.21 

84.84 

35.58 

92 

93 

86.23 

34.84 

86.08    35.21 

85.92 

35.59 

85.76 

35.96 

93 

94 

,87.16 

35.21 

87.00-35.59 

86.84 

35.97 

86.69 

36.35 

94 

95 

88.08 

35.59 

87.93  135.97 

87.77 

36.35 

87.61 

36.74 

95 

96 

i 89.01 

35.96 

88.85  1  36.35 

88.69 

36.74 

88.53 

37.12 

96 

97  '  89.94 

.36.34 

89.78    36.73 

89.62 

37.12 

89.45 

37.51 

!    97 

98    90.86 

36.71 

90.70    37.11 

90.54 

37.50 

90.38 

37.90 

;    98 

99  i 91.79 

37.09 

91.63    37.49 

191.46 

37.89 

91.30 

38.28 

i    99 

100 

1  92.72 

37.46 

92.55    37.86 

[92.39 

38.27 

1  92.22 

38.67 

!100 

1 

i 

6 
o 

c 

Dep. 

Lat. 

Dep.       Lat. 

1 

Dep. 

'•"•• 

i!   Dep. 

|i 

Lat. 

" 

68 

Degr. 

671 

Deor. 

67^ 

Dog. 

:    67i 

i  >•••/. 

48 


tRAVEitsK  'Table. 


23  Deg. 

1 

23k  Deg. 

23^ 

Deg. 

m  Deg. 

Lat. 

Dcp. 

Lat. 
0.92 

Dop. 

0.39 

Lat. 

Dep. 

0.40 

Lat. 

Dep. 

1 

0.92 

0.39 

0.92 

0.92 

0.40 

1 

2 

1.84 

0.78 

1.84 

0.79 

1.83 

0.80 

1.83 

0.81 

2 

3 

2.76 

1.17 

2.76 

1.18 

2.75 

1.20 

2.75 

1.21 

3 

4 

3.68 

1.56 

3.68 

1.58 

3.67 

1.59 

3.66 

1.61 

4 

5 

4.60 

1.95 

4.59 

1.97 

4.. 59 

1.99 

4.58 

2.01 

6 

6 

6.52 

2.34 

5.51 

2.37 

5.50 

2.39 

5.49 

2.42 

6 

7 

6. '14 

2.74 

6.43 

2.76 

6.42 

2.79 

6.41 

2.82 

7 

8 

7.36 

3.13 

7.35 

3.16 

7.. 34 

3.19 

7.32 

3.22 

8 

9 

8.28 

3.52 

8.27 

3.55 

8.25 

3.59 

8.24 

3.62 

9 

iO 

9.20 

3.91 

9.10 

3.95 

9.17 

3.99 

9.15 

4.03 

10 

11 

10.13 

4.30 

10.11 

4.34 

10.09 

4.39 

10.07 

4.43 

11 

12 

11.05 

4.69 

11.03 

4.74 

11.00 

4.78 

10.98 

4.83 

12 

13 

11.97 

5.08 

11.94 

5.13 

11.92 

5.18 

11.90 

6.24 

13 

14 

12.89 

5.47 

12.86 

5.63 

12.84 

5.58 

12.81 

5.64 

14 

15 

13.81 

6.86 

13.78 

5.92 

13.76 

5.98 

13.73 

6.04 

15 

16 

14.73 

6.25 

14.70 

6.32 

14.67 

6.38 

14.64 

6.44 

16 

17 

15.65 

6..  64 

15.62 

6.71 

15.59 

6.78 

15.66 

6.85 

17 

18 

16.57 

7.03 

16.54 

7.11 

16.51 

7.18 

16.48 

7.25 

18 

19 

17.49 

7.42 

17.46 

7.50 

17.42 

7.58 

17.39 

7.65 

19 

20 

18.41 

7.81 

18.38 

7.89 

18.. 34 

7.97 

18.31 

8.05 

20 

21 

19.33 

8.21 

19.29 

8.29 

19.26 

8.37 

19.22 

8.46 

21 

22 

20.25 

8.60 

20.21 

8.68 

20.18 

8.77 

20.14 

8.86 

22 

23    21.17 

8.99 

21.13 

9.08 

21.09 

9.17 

21.05 

9.2f) 

23 

24    22.09 

9..?8  ! 

22.05 

9.47 

22.01 

9.67 

21.97 

9.67 

24 

25  123.01 

9.77 

22.97 

9.87 

22.93 

9.97 

22.88 

10.07 

25 

26 

23.93 

10.16 

23.89 

10.26 

23.84 

10.37 

23.80 

10.47 

26 

27 

24.85 

10.55 

24.81 

10.66 

24.76 

10.77 

24.71 

10.87 

27 

28 

25.77 

10.94 

25.73 

11.05 

25.68 

11.16 

25.63 

1.1.28 

28 

29 

26.69 

11.33 

26.64 

11.45 

26.59 

11.56 

26.54 

11.68 

29 

30 

27.62 

11.72 

27.56 

11.84 

27.51 

11.96 

27.46 

12.08 

30 

31 

28.54 

12.11 

28.48 

12.24 

28.43 

12.36 

28.37 

12.49 

31 

32 

29.46 

12.50 

29.40 

12.63 

29.35 

12.76 

29.29 

12.89 

32 

33 

30.38 

12.89 

30.32 

13.03 

30.26 

13.16 

30.21 

13.29 

33 

34 

31.30 

13.28 

31.24 

13.42 

31.18 

13.56 

31.12 

13.69 

34 

35 

32.22 

13.68 

32.16 

13.82 

32.10 

13.96 

32.04 

14.10 

35 

36 

33.14 

14.07 

33.08 

14.21 

33.01 

14.35 

32.95 

14.50 

36 

37 

34.06 

14.46 

34.00 

14.61 

.33.93 

14.75 

33.87 

14.90 

37 

38 

34.98 

14.85 

34.91 

15.00 

34.85 

15.15 

34.78 

15.30 

38 

39 

35.90 

15.24 

35.83 

15.39 

35.77 

15.55 

35.70 

15.71 

39 

40 

36.82 

15.63 

36.75 
37.67 

15.79 

36.68 
37.60 

15.95 

36.61 

16.11 

40 

41 

41 

37.74 

16.02 

16.18 

16.35 

37.63 

16.61 

42 

38.66 

16.41 

38.59 

16.58 

38.. 52 

16.76 

38.44 

16.92 

42 

43 

39.58 

16.80 

39.51 

16.97 

39.43 

17.15 

39.36 

17.32 

43 

44 

40.50 

17.19 

40.43 

17.37 

40.35 

17.. 54 

40.27 

17.72 

44 

45    41.42 

17., 58 

41.35 

17.76 

41.27 

17.94 

141.19 

1.^.  ,2 

46 

46 

,42.34 

; 17.97 

,42.26 

, 18.16 

42.18 

18.34 

!42.10 

is.;;3 

46 

47 

143.26 

i  18.36 

143.18 

18.55 

43.10 

18.74 

43.02 

18.93 

47 

48 

144.18 

1 18.76 

144.10 

18.95 

44.02 

19.14 

143.93 

19. na 

48 

49 

145.10 

1 19.15 

1  45.02 

19.34 

44.94 

19.64 

:44.S5 

r).;3 

49 

50 

S 

e 

1 

5 

46.03 
'  Dep. 

; 19.54 
1    Lat. 

7V^ 

||  45.94 

19.74 

45.85 

19.94 
Lat. 

'45.77 

20.14 

50 

03 

U 

c 

rt 

Dop.       Lat. 

Dep. 

,    Dep. 

Lat. 

67 

!i     ■■ 

66J  Deg. 

OSi 

Deg.             6G^ 

Deg. 

TRAVERSE    TABLE. 


p 

O 

P 

23  Deg.      1 

i 

23i  Deg. 

23A  Deg. 

231  Deg. 

6 
"51 

Lat. 

Dep. 

Lat. 

Dep. 

20.  i3 

Lat. 

Dep. 

Lat.      Dep. 

1 

46.95 

19.93! 

46.86 

46.77 

20.34 

46.68  120.54 

52 

47.87 

20.32  1 

47.73 

20    ■^3 

47.69 

20.73 

47.60 

20.94 

52 

53 

48.79 

20.71 

48.70 

20.  M2 

48.60 

21.13 

48.51 

21.35 

53 

54 

49.71 

21.10 

49.61 

21. '52 

49.52 

21.53 

49.43 

21.75 

54 

55 

50.63 

21.49 

50.53 

21.71 

.50.44!  21.93  1 

50.34 

22.15 

55 

56 

51.55 

21.88 

51.45 

22.11 

51.36  !  22.33 

51.26 

22.55 

56 

57 

52.47 

22.27 

52.37 

22 .  50 

52.27 

22.73 

52.17 

22.98 

57 

53 

53.39 

22.68 

53.29 

22.90 

53.19 

23.13 

53.09 

23.36 

58 

59 

54.31 

23.05 

54.21 

23.29 

54.11 

23.53 

54.00 

23.76 

59 

60 
61 

.55.23 

23.44 

55.13 

23.63 

55.02 

23.92 

54.92 

24.16 

60 

56.15 

23.83 

56.05 

24.03 

55.94 

24.32 

55.83 

24.57 

61 

62 

57.07 

24.23 

56.97 

24.47 

56.88 

24.72 

56.75 

24.97 

62 

63 

57.99 

24.62 

57.83 

24.87 

57.77 

25.12 

.57.66 

25.37     63 

64 

53.91 

25.01 

58 .  80 

25.26 

58.69 

25 .  52 

58.58 

25.78  !   64 

65 

59.83 

25.40 

59.72 

25.66 

59.61 

25.92 

.59.50 

26.18  1   65 

66 

60.75 

25 .  79 

60.64 

26.05 

60.53 

26.32 

60.41 

26.58  I   66 

67 

61.67 

26.18 

61. .56 

2T.45 

61.44 

26 .  72 

61.33 

26.98 

67 

68 

62.59 

26.57 

62.48 

28.84 

62.36 

27.11 

62.24 

27.39 

68 

69 

63.51 

26.96 

63.40 

27.24 

63.28 

27.51 

63.16 

27.79 

69 

70 
71 

61.44 

27.35 

64.32 

27.63 

64.19 

27.91 

64.07 

28.19 

70 

65.36 

27.74 

65.23 

23.03 

65 . 1 1 

23.31 

64.99 

23.59 

71 

72 

66 .  2a 

28.13 

66.15 

28.42 

66.03 

23.71 

65.90 

29.00 

72 

73 

67.20 

28.52 

67.07 

28.82 

66.95 

29.11 
29.51 

66.32 

29.40 

73 

74 

63.12 

28.91 

67.99 

29.21 

67.86 

67.73 

29.80 

74 

75 

69.04 

29.. 30 

63.91 

29.61 

68.73 

29.91 

68.65 

30.21 

75 

76 

69.96 

29.70 

69.83 

30.00 i 

69.70 

30.30 

69.. 56 

30.61 

76 

77 

70.88 

30.09 

70 .  75 

30.40 

70.61 

30.70 

70.43 

31.01 

77 

78 

71.80 

30.43 

n.67 

30.79 

71.53 

31.10 

71.39 

31.41 

78 

79 

72.72 

30.37 

72 .  53 

31.18 

72.45 

31.50 

72.31 

31.82 

79 

80 

81 

73.64 

31.26 

73.50 

31.53 

73.36 

31.90 

73.22 

32.22 

80 
81 

74.56 

31.65 

74.42 

31.97 

74.23 

32.30 

74.14 

32.62 

82 

75.48 

32.04 

75.34 

32.37 

75 .  20  1  32 .  70 

75.03 

33.03  ;   82 

83 

76.40 

32.43 

76.26 

32.76 

76.12 

33.10 

75.97 

33.43  1   83 

84 

77.32 

32.82 

77.18 

33.16 

77.03 

33.49 

76.89 

.33.83!   84 

85 

78.24 

33.21 

73.10 

33.. 55 

77.95 

.33.89 

77.80 

.34.23 

85 

86 

79.16 

33.60 

79.02 

33.95 

78.87 

34.29 

78.72 

34.64 

86 

87 

80.08 

33.99 

79 .  93 

34.34 

79.78 

34.69 

79.63 

35.04 

87 

88 

81.00 

34.38 

80.85 

34.74 

80.70 135.09 

80.55 

35.44 

as 

89 

81.92 

34.78 

81.77 

.35.13 

81.62 

35.49 

81.46 

35.84 i  89 1 

90 
91 

82.85 

35.17 

82.69 

35.53 

82.54 

.35.89 

82. 3S 

36.25 

90 

83.77 

35.56 

83.61 

35.92 

83.45 

36.29 

83.29 

36.65 

"91 

92 

84.69  1  35.95 

84.53 

36.32 

84.37 

36.63 

84.21 

37.05  1   92 

93 

85.61  1 36.34 

85.45 

35.71 

85.29 

37.08 

85.12 

37.46  1   93 

94 

86.53  1  36.73 

86.37 

37.11 1 

86.20  137.48 

86.04 

37.86!   94 

95 

87.45    37.12 

87.29 

37.50 

87. 12  i  37.88 

86.95 

38.26 

95 

96 

83.37  1 37.51 

88.20 

37.90  1 

88.04  j  38.28 

87.87 

38.66 

96 

97 

89.29 '37.90 

89.12 

38.29' 

88.95    38.68 

88.79 

39.07 

97 

98 

90.21  ■ 38.29 

90.04 

33.68 i 

89.87  1  39.08 

89.70 

39.47 

98 

99 

91.13! 38.68 

90.96 

39.08; 

90.79 139.48 

90.62 

.39.87 

99 

100 

1 
,2 

92.05  139.07 
Dep.  1    Lat. 

91.88 

39.47 

91.71  1 39.87 

91.53 

40.27 

100 

Dep. 

Lat. 

Dep. 

Lat. 

Dep 

Lat. 

i 
s 

.2 

Q 

67  r 

)eg. 

66|  De?. 

661  Deg. 

661  oeg. 

60 


TBAVERSE    TABLK, 


p 

3 
? 
1 

24Deg. 

24i  Deg. 

1      24A  Deg. 

241  Deg. 

0 

s 

1 

Lat. 

Dep. 

Lat. 

Dep. 

Lai. 

Dep. 

Lat. 

Dep. 

~o79r 

0.41 

0.91 

0.41 

0.91 

0.41 

0.91 

0.42 

2 

1.83 

0.81 

1.82 

0.82 

1.82 

0.83 

1.82 

0.84 

2 

3 

2.74 

1.22 

2.74 

1.23 

2.73 

1.24 

2.72 

1.26 

3 

4|    3.65 

1.63 

3.65 

1.64 

3.64 

1.66 

3.63 

1.67 

4 

5      4.57 

2.03 

4.56 

2.05 

4.55 

2.07 

4.64 

2.09 

5 

6      5.48 

2.44 

5.47 

2.46 

5.46 

2.49 

5.45 

2.51 

6 

7 

6.39 

2.85 

6.38 

2.87 

6.37 

2.90 

6.36 

2.93 

7 

8 

7.31 

I    3.25 

7.29 

3.29 

7.28 

3.32 

7.27 

3.35 

8 

9 

8.22 

i    3.66 

8.21 

3.70 

8.19 

3.73 

8.17 

3.77 

9 

10 
11 

9.14 
10.05 

4.07 
4.47 

9.12 

4.11 
4.52 

9.10 

4.15 

9.08 

4.19 

10 
"11 

10.03 

10.01 

4.56 

9.99 

4.61 

12 

10.96 

4.88 

10.94 

4.93 

10.92 

4.98 

10.90 

6.02 

12 

13 

11.88 

5.29 

11.85 

5.34 

11.83 

5.39 

11.81 

5.44 

13 

14 

12.79 

5.69 

12.76 

5.75 

12.74 

6.81 

12.71 

5.86 

14 

15 

13.70 

6.10 

13.68 

6.16 

13.65 

6.22 

13.62 

6.28 

15 

J6 

14.62 

6.51 

14.59 

6.57 

14.56 

6.64 

14.53 

6.70 

16 

17 

15.53 

6.92 

15.50 

6.98 

15.47 

7.05 

15.44 

7.12 

17 

18 

16.44 

7.32 

16.41 

7.39 

16.38 

7.46 

16.35 

7.54 

18 

19 

J7.36 

7.73 

17.32 

7.80 

17.29 

7.88 

17.25 

7.95 

19 

20 

21 

18.27 

8.13 

18.24 

8.21 

18.20 

8.29 

18.16 

8.37 

20 
21 

19.18 

8.54 

19.15 

8.63 

19.11 

8.71 

19.07 

8.79 

22 

20.10 

8.95 

20.06 

9.04 

20.02 

9.12 

19.98 

■9.21 

22 

23 

21.01 

9.35 

20.97 

9.45 

20.93 

9.. 54 

20.89 

9.63 

23 

24 

21.93 

9.76 

21.88 

9.86 

21.84 

9.95 

21.80 

10.05 

24 

25 

22.84 

10.17 

22.79 

10.27 

22.75 

10.37 

22.70 

10.47 

25 

26 

23.75 

10.58 

23.71 

10.68 

23.66 

10.78 

23.61 

10.89 

26 

27 

24.67 

10.98 

24.62 

11.09 

24.57 

11.20 

24.52 

11.30 

27 

28 

25.58 

11.39 

25.53 

11.50 

25.48 

11.61 

25.43 

11.72 

28 

29 

26.49 

11.80 

26.44 

11.91 

26.39 

12.03 

26.34 

12.14 

29 

30 
31 

27.41 

12.20 

27.35 

12.32 

27.30 

12.44 

27.24 

12.56 

30 
31 

28.32 

12.61 

28.26 

12.73 

28.21 

12.86 

28.15 

12.68 

32 

29.23 

13.02 

29.18 

13.14 

29.12 

13.27 

29.06 

13.40 

32 

33 

30.15 

13.42 

30.09 

13.55 

30.03 

13.68 

29.97 

13.82 

33 

34 

31.06 

13.83 

31.00 

13.96 

30.94 

14.10 

30.88 

14.23 

34 

35 

31.97 

14.24 

31.91 

14.38 

31.85 

14.51 

31.78 

14.65 

35 

36 

32.89 

14.64 

32.82 

14.79 

32.76 

14.93 

32.69 

15.07 

36 

37 

33.80 

15.05 

33.74 

15.20 

33.67 

1 5.. 34 

33.60 

15.49 

37 

38 

34.71 

15.46 

34.65 

15.61 

34.58 

15.76 

34.51 

15.91 

38 

39 

35.63 

15.86 

35.56 

16.02 

35.49 

16.17 

35.42 

16.33 

39 

40 
41 

36.54    16.27  1 

36.47 

16.43 

36.40 

16.59 

36.33 

16.75 

40 
41 

37.46  i 

16.68 

37.38 

16.84 

■37T31 

17.00 

37.23 

17.16 

42 

38.37 

17.08 

38.29 

17.25 

38.22 

17.42 

38.14 

17.58 

42 

43 

39.28 

17.49 

39.21 

17.60 

39.13 

17.83 

39.05 

18.00 

43 

44 

40.20  1  17.90 

40.12 

18.07 

40.04 

18.25 

39.96 

18.42 

44 

45 

41.11  118.30 

41.03 

18.48 

40.95 

18.66 

40.87 

18.84 

45 

46 

42.02 

18.71 

41.94 

18.89 

41.86 

19.08 

41.77 

19.26 

46 

47 

42.94 

19.12 

42.85 

19.30 

42.77 

19.49 

42.68 

19.68 

47 

48 

43.85 

19.52 

43.76 

19.71 

43.68 

19.91 

43.59 

20.10 

48 

49 

44.76 

19.93 

44.68 

20.13 

44.59 

20.32 

44.50 

20.51 

49 

50 

y 
1 

45.68  120.34 

45.59 

20.. ^.4 

45.. 50 

20.73 

45.41 
Dep. 

20.93 
Lat. 

50 

6 
0 

en 

a 

Dep.  1    Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

66  Deg. 

65f  DejT. 

! 

65^  1 

3e.. 

65i  Deg. 

TRAVF.USF.    TAHLi?:. 


51 


m' 

P 

51 

24  Deg. 

24i  Deg. 

24i 

Deg. 

24|  Deg. 

C 
51 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

46.59 

20.74 

46.50 

20.95 

46.41 

21.15 

46.32 

21.35 

52 

47.50 

21.15 

47.41 

21.36 

47.32 

21.56 

47.22 

21.77 

52 

53 

48.42 

21.56 

48.32 

21.77 

48.23 

21.98 

48.13 

23.19 

53 

54 

49.33 

21.96 

49.24 

22.18 

49.14 

22.39 

49.04 

22.61 

54 

55 

50.24 

22.37 

50.15 

22.59 

50.05 

22.81 

49.95 

23.03 

55 

56 

51.16 

22.78 

51.06 

23.00 

50.96 

23.22 

50.86 

23.44 

56 

57 

52.07 

23.18 

51.97 

23.41 

51.87 

23.64 

51.76 

23.86 

57 

58 

52.99 

23.59 

52.88 

23.82 

52.78 

24.05 

52.67 

24.28 

58 

59 

53.90 

24.00 

53.79 

24.23 

53.69 

24.47 

53.58 

24.70 

59 

60 
61 

54.81 

24.40 

54.71 

24.64 

54.60 

24.88 

54.49 

25.12 

60 
61 

55.73 

24.81 

55.62 

35.05 

55.51 

25.30 

.55.40 

25.54 

62 

56.64 

25.22 

56.53 

25.46 

56.42 

25.71 

56.30 

25.96 

62 

63 

57.55 

25.62 

57.44 

25.88 

57.33 

26.13 

.57.21 

23.38 

63 

64 

58.47 

26.03 

58.35 

26.29 

,58.24 

26.54 

.58.12 

26.79 

64 

65 

59.38 

26.44 

59.26 

26.70 

59.15 

26.96 

59.03 

27.21 

65 

66 

60.29 

26.84 

60.18 

27.11 

60.06 

27.37 

59.94 

27.63 

66 

67 

61.21 

27.25 

61.09 

27.52 

60.97 

27.78 

60.85 

28.05 

67 

68 

62.12 

27.66 

02.00 

27.93 

61.88 

28.20 

61.75 

28.47 

68 

69 

63.03 

28.06 

62.91 

28.34 

62.79 

28.61 

62.66 

28.89 

69 

70 
71 

63.95 

28.47 

63.  &2 

28.75 

63.70 

29.03 

63.57 

29.31 

70 

71 

64.86 

28.88 

64.74 

29.16 

64.61 

29.44 

04.48 

29.72 

72 

65.78 

29.28 

65.65 

29.57 

65.52 

29.86 

65.39 

30.14 

72 

73 

66.69 

29.69 

66.56 

29.98 

66.43 

30.27 

66.29 

30.56 

73 

74 

67.60 

30.10 

67.47 

30.39 

67.34 

30.69 

67.20 

30.98 

74 

75 

68.. 52 

.30.51 

68.38 

30.80 

68.25 

31.10 

i 68.11 

31.40 

75 

76 

69.43 

30.91 

69.29 

31.21 

69.16 

31.52 

i 69.02 

31.82 

76 

77 

70.34 

31.32 

70.21 

31.63 

70.07 

31.93 

69.93 

32.24 

77 

78 

71.26 

31.73 

71.12 

32.04 

70.98 

.32.35 

i 70.84 

32.66 

78 

79 

72.17 

32.13 

72.03 

32.45 

71.89 

32.76 

171.74 

33.07 

79 

80 

81 

73.08 

.32.54 

72.94 

32.86 

72.80 

33.18 

172.65 

33.49 

80 
81 

74.00 

32.95 

73.85 

33.27 

73.71 

33.59 

j 73.56 

33.91 

82 

74.91 

33.35 

74.76 

33.68 

74.62 

34.00 

!  74.47 

34.33 

82 

83 

75.82 

33.76 

75.68 

34.09 

75.53 

34.42 

75.38 

34.75 

83 

84 

76.74 

34.17 

70.59 

34.50 

76.44 

34.83 

76.28 

35.17 

84 

85 

77.65 

34.57 

77.50 

34.91 

77.35 

35.25 

177.19 

35.59 

85 

86 

78.56 

34.98 

78.41 

35.32 

78  26 

35.66 

78.10 

36.00 

86 

87 

79.48 

35.39 

79.32 

35.73 

79.17 

36.08 

79.01 

36.42 

87 

88 

80.39 

35.79 

80.24 

36.14 

80.08 

36.49 

79.92 

36.84 

88 

89 

81.31 

36.20 

81.15 

36.55 

80.99 

36.91 

80.82,37  26 

S9 

90 
'91 

82.22 

36.61 

82.06 

36.96 

81.90 
82.81 

37.32 

81.73 
82.64 

37.68 

90 
9l' 

83.13 

37.01 

82.97 

.37.38 

37.74 

38.10 

92 

84.05 

37.42 

83.88 

37.79 

83.72 

38.15 

83.55 

38.. 52 

92 

93 

84.96 

37.83 

84.79 

38.20 

84.63 

38.57 

84.46 

38.94 

93 

94 

85.87 

38.23 

85.71 

38.61 

85.54 

38.98 

85.37 

39.35 

94 

95 

86.79 

38.64 

86.62 

39.02 

86.45 

39.40 

86.27 

39.77 

95 

96 

87.70 

39.05 

87.53 

39.43 

87.36 

39.81 

87.18 

40.19 

96 

97 

88.61 

39.45 

88.44 

39.84 

88.27 

40.23 

88.09 

40.61 

97 

98 

89.53 

39.86 

89.35 

40.25 

89.18 

40.64 

89.00 

41.03 

98 

99 

90.44 

40.27 

90.26 

40.66 

90.09 

41.05 

89.91 

41.45 

99 

100 

6 
o 

c 

xn 

± 

91.35 
Dep. 

40.67 

91.18 

41.07 

91.00 

41.47 

90.81 

41.87 

100 

d 
c 

1 
a. 

Q 

Lat. 

Dop. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

63  De;:-. 

r 

'      65| 

Deg. 

e5\  Deg. 

65\  Deg. 

62 


TRAVJbRSE    TAIJLE. 


S' 

p 

a 
o 
re 

23  Deg.      ' 

25i  Deg. 

25h  Deg. 

25  f  Deg. 

CO 

2 
J 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

0.91 

0.42 

O.SO 

0.43 

0.90 

0.43 

0.90 

0.43 

2 

1.81 

0.85 

1.81 

0.85 

1.81 

0.86 

1.80 

0.87 

2 

3 

2.72 

1.27 

2.71 

1.28 

2.71 

1.29 

2.70 

1.30 

3 

4 

3.63 

1.69 

3.62 

1.71 

3.61 

1.72 

3.60 

1.74 

4 

5 

4.53  1    2.11 

4.52 

2.13 

4.51 

2.15 

4.50 

2.17 

5 

6 

5.44 

2.54 

5.43 

2.56 

5.42 

2.58 

5.40 

2.61 

6 

7 

6.34 

2.96 

G.33 

2.99 

6.32 

3.01 

6.30 

3.04 

7 

8 

7.25 

3.38 

7.24 

3.41 

7.22 

3.44 

7.21 

3.48 

8 

9 

8.16 

3.80 

8.14 

3.84 

8.12 

3.87 

8.11 

3.91 

9 

10 

9.06 

4.23 

9.04 

4.27 

9.03 

4.31 

9.01 

4.34 

4.78 

10 
11 

11 

9.97 

4.65 

9.95 

4.69 

9.93 

4.74 

9.91 

12 

10.88 

5.07 

10.85 

5.12 

10.83 

5.17 

10.81 

5.21 

12 

13 

11.78 

5.49 

11.76 

5.55 

11.73 

5.60 

11.71 

5.65 

13 

14 

12.  G9 

5.92 

12.66 

5.97 

r^.64 

6.03 

12.61 

6.08 

14 

15 

13.r,9 

6.34 

13.57 

6.40 

13.54 

6.46 

13.51 

6.. 52 

15 

16 

14.50 

6.76 

14.47 

6.83 

14.44 

6.89 

14.41 

6.95 

16 

17 

15.41 

7.18 

15.38 

7.25 

15.34 

7.32 

15.31 

7.. 39 

17 

18 

16.31 

7.61 

16.28 

7.68 

16.25 

7.75 

16.21 

7.82 

18 

19 

17.22 

8.03 

17.18 

8.10 

17.15 

8.18 

17.11 

8.25 

19 

20 
21 

18.13 
19.03 

8.45 

18.09 

8.53 

18.05 

8.61 

18.01 

8.69 

20 

21 

8.87i 

18.99 

8.96 

18.95 

9.04 

18.91 

9.12 

22 

19.94 

9.30 

19.90 

9.38 

19.86 

9.47 

19.82 

9.56 

22 

23 

20.85 

9.72! 

20.80 

9.81 

20.76 

9.90 

20.72 

9.99 

23 

24 

21.75 

lO.Hi 

21.71 

10.24 

21.66 

10.33 

21.62 

10.43 

24 

25 

22.66 

10.57 

22.61 

10.66 

22.56 

10.76 

22.52 

10.86 

25 

2G 

23.56 

10.99 

23.52 

11.09 

23.47 

11.19 

23.42 

11.30 

26 

27 

24.47 

11.41 

24.42 

11.52 

24.37 

11.62 

24.32 

11.73 

27 

28 

25 .  38 

11.83 

25.32 

11.94 

25.27 

12.05 

25.22 

12.16 

28 

2S 

2G.28 

12.26 

26.23 

12.37 

26.17 

12. 4S 

26.12 

12.60 

29 

30 
31 

27.19 

12.68 

27.13 

12.80 

27.08 

12.92 

27.02 
27.92 

13.03 
13.47 

30 
31 

2S.10 

13.10 

28.04 

13.22 

27.98 

13.35 

32 

29.00 

13.52 

28.94 

13.65 

28.88 

13.78 

28.82 

13.90 

32 

33 

29.91 

13.95 

29.85 

14.08 

29.79 

14.21 

29.72 

14.34 

33 

34 

30.81 

14.37 

30.75 

14.50 

30.69 

14.64 

30.62 

14.77 

34 

35 

31.72 

14.79 

31.66 

14.93 

31.59 

15.07 

31.52 

15.21 

35 

36 

32 .  63 

15.21 

32.56 

15.36 

32.49 

15.. 50 

32.43 

15.64 

36 

37 

33.53 

15.64 

33.46 

15.78 

33.40 

15.93 

33.33 

16.07 

37 

38 

34.44 

16.06 

34.37 

16.21 

34.30 

16.36 

34.23 

16.51 

38 

39 

35.35 

16.48 

35.27 

16.64 

35.20 

16.79 

35.13 

16.94 

39 

40 
41 

36.25 

16.90 

36.18 

17.06 

36.10 

17.22 

,36.03 

17.38 
17.81 

40 
41 

37.16 

17.33 

37.08 

17.49 

37.01 

17.65 

36.93 

42 

38.06 

17.75 

37.99 

17.92 

37.91 

18.08 

37.83 

18.25 

42 

43 

38.97 

18.17 

38.89 

18.34 

38.81 

18.51 

38.73 

18.68 

43 

44 

39.88 

18.60 

39.80 

18.77 

39.71 

18.94 

39.63 

19.12 

44 

45 

40.78 

19.02 

40.70 

19.20 

40.62 

19.37 

40.53 

19.55 

45 

46 

41.69 

19.44 

41.60 

19.62 

41.52 

19.80 

41.43 

19.98 

46 

47 

42.60 

19.86 

42.51 

20.05 

42.42 

20.23 

42.33 

20.42 

47 

48 

43.50 

20.29 

43.41 

20.48 

43.32 

20.66 

43.23 

20.85 

48 

49 

44.41 

20.71 

44.32 

20.90 

44.23 

21.10 

44.13 

21.29 

49 

50 

45.32 

21.13 

45.22 

21.33 

45.13 

21.63 

45.03 

21.72 

50 

i 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

03 
O 

c 
C 

65  Deg. 

64|  Deg. 

64i 

Deg. 

64i  Deg. 

TRAVERSE    TABLE. 


63 


0 

^' 

p 

a 

? 
51 

25  Deg. 

25i  Deg. 

25i  Deg. 

25|  Deg. 

5 

o 
? 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

46.22 

21.55 

46.13 

21.75 

46.03 

21.96 

45.94 

22.16 

51 

52 

47.13 

21.98 

47.03 

22.18 

46.93 

22.39 

46.84 

22.59 

52 

53 

48.03 

22.40 

47.94 

22.01 

47.84 

22.82 

47.74 

23.03 

53 

54 

48.94 

22.82 

48.84 

23.03 

48.74 

23.25 

48.64 

23.46 

54 

55 

49.85 

23.24 

49.74 

23.46 

49.64 

23.68 

49.54 

23.89 

55 

56 

50 .  75 

23.67 

50.65 

23.89 

50.. 54 

24.11 

50.44 

24.33 

56 

57 

51.66 

24.09 

51.55 

24.31 

51.45 

24.54 

51.34 

24.76 

57 

58 

.52.57 

24.51 

52.46 

24.74 

.52.35 

24.97 

52.24 

25.20 

68 

59 

53.47 

24.93 

53.36 

25.17 

53.25 

25.40 

53.14 

25.63 

59 

60 
61 

54.38 

25.36 

54.27 

25.59 

54.16 

25.83 

54.04 

26.07 

60 

55.28 

25.78 

55.17 

26.02 

55.06 

26.26 

54.94 

26.50 

61 

62 

56.19 

26.20 

56.08 

26.45 

55.96 

^.69 

55.84 

26.94 

62 

63 

57.10 

26.62 

.56.98 

26.87 

56.86 

27.12 

.56.74 

27.37 

63 

64 

58.00 

27.05 

57.89 

27.30 

57.77 

27.55 

57.64 

27.80 

64 

65 

58.91 

27.47 

58.79 

27.73 

58.67 

27.98 

58.. 55 

28.24 

65 

66 

59.82 

27.89 

59.69 

28.15 

59.57 

28.41 

.59.45 

28.67 

66 

67 

60.72 

28.32  1 

60.60 

28.58 

60.47 

28.84 

60.35 

29.11 

67 

68 

61.63 

28.74 

61.50 

29.01 

61.38 

29.27 

61.25 

29.54 

68 

69 

62.54 

29.16 

62.41 

29.43 

62.28 

29.71 

62.15 

29.98 

69 

70 
71 

63.44 

29.58 

63.31 

29.86 

63.18 

30.14 

63.05 

30.41 

70 
71 

64.35 

30.01 

64.22 

30.29 

64.08 

30.57 

63.95 

30.85 

72 

65.25 

30.43 

65.12 

30.71 

64.99 

31.00 

64.85 

31.28 

72 

73 

66.18 

.30.85 

66.03 

31.14 

65.89 

31.43 

65.75 

31.71 

73 

74 

67.07 

31.27 

66.93 

31.57 

66.79 

31.86 

66.65 

32.15 

74 

75 

67.97 

31.70 

67.83 

31.99 

67.69 

32.29 

67.55 

32.58 

75 

76 

68.88 

32.12 

68.74 

32.42 

68.60 

32.72 

68.45 

33.02 

76 

77 

69.79 

32.54 

69.64 

32.85 

69.50 

33.15 

69.35 

33.45 

77 

78 

70.69 

32.96 

70.55 

33.27 

70.40 

33.. 58 

70.25 

33.89 

78 

79 

71.60 

33.39 

71.45 

33.70 

71.30 

34.01 

71.16 

34.32 

79 

80 

81 

72.50 
73.41 

33.81 

,72.36 
73.26 

34.13 

72.21 

34.44 

72  06 

34.76 

80 

34.23 

34.55 

73.11 

34.87 

72.96 

35.19 

81 

82 

74.32 

34.65 

74.17 

34.98 

74.01 

35.30 

73.86 

35.62 

82 

83 

75.22 

35.08 

75.07 

35.41 

74.91 

35.73 

74.76 

38.06 

83 

84 

76.13 

35.50 

75.97 

.35.83 

75.82 

36.16 

75.66 

36.49 

84 

85 

77.04 

35.92 

76.88 

36.26 

76.72 

36.59 

76.56 

36.93 

85 

86 

77.94 

36.35 

77.78 

36.68 

77.62 

37.02 

77.46 

37.36 

86 

87 

78.85 

36.77 

78.69 

37.11 

78.52 

37.45 

78.36 

37.80 

87 

88 

79.76 

37.19 

79.59 

37.54 

79.43 

37.88 

79.26 

38.23 

88 

89 

80.66 

37.61 

80.50 

37.96 

80.33 

.38.32 

80.16 

38.67 

89 

90 
91 

81.57 

38.04 

81.40 

38.39 

81.23 

38.75 

81.06 

39.10 

90 

82.47 

38.46 

82.31 

38.82 

82.14 

39.18 

81.96 

39.53 

91 

92 

83.38 

38.88 

83.21 

39.24 

83.04 

39.61 

82.86 

39.97 

92 

93 

84.29 

39.30 

84.11 

39.67 

83.94 

40.04 

83.70 

40.40 

93 

94 

85.19 

39.73 

85.02 

40.10 

84.84 

40.47 

84.67 

40.84 

94 

95 

86.10 

40.15 

85.92 

40.52 

85.75 

40.90 

85.57 

41.27 

95 

96 

87.01 

40.57 

86.83 

40.95 

86.65 

41.33 

86.47 

41.71 

96 

97 

87.91 

40.99 

87.73 

41.38 

87.55 

41.76 

87.37 

42.14 

97 

98 

88.82 

41.42 

88.64 

41.80 

88.45 

42.19 

88.27 

42.58 

98 

99 

89.72 

41.84 

89.54 

42.23 

89.36 

42.62 

89.17 

43.01 

99 

100 

6 

.2 

Q 

90.63 

42.26 

90.45 

42.66 

90.26 

43.05 

90.07 

43.44 

100 

g 

c 

d 

.2 

0 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

65  Deg. 

64|  Deg. 

64i  Deg. 

m  Dog. 

54 


TRAVERSE    TABLE. 


1 

26  Deg. 

264  Deg. 

26h  Deg. 

26|  Deg. 

a 

a 

s 

Lat. 

Dep. 

Lat. 

Dep. 

Lat.  1  Dep. 

Lat. 

Dep. 

1 

0.90 

0.44 

0.90 

0.44 

0.89  1    0.45 

0.89 

0.45 

1 

2 

1.80 

0.88 

1.79 

0.88 

1.79 

0.89 

1.79 

0.90 

2 

3 

2.70 

1.32 

2.69 

1.33 

2.68 

1.34 

2.68 

1.35       3  1 

4 

3.60 

1.75 

3.59 

1.77 

3.58 

1.78 

3.57 

1.80  !     4| 

5 

4.49 

2.19 

4.48 

2.21 

4.47 

2.23 

4.46 

2.25 

5 

6 

5.39 

2.63 

5.38 

2.65 

5.37 

2.68 

5.36 

2.70 

6 

7 

6.29 

3.07 

6.28 

3.10 

6.26 

3.12 

6.25 

3.15 

7 

8 

7.19 

3.51 

7.17 

3.. 54 

7.16 

3.57 

7.14 

3.60 

8 

9 

8.09 

3.95 

8.07 

3.98 

8.05 

4.02 

8.04 

4.05 

9 

10 

8.99 

4.38 

8.97 

4.42 

8.95 

4.46 

8.93 

4.50 

10 
11 

11 

9.89 

4.82 

9.87 

4.87 

9.84 

4.91 

9.82 

4.95 

12 

10.79 

5.26 

10.76 

5.31 

10.74 

5.35 

10.72 

5.40 

12 

13 

11.68 

5.70 

11.66 

5.75 

11.63 

5.80 

11.61 

5.85 

13 

14 

12.58 

6.14 

12.56 

6.19 

12.53 

6.25 

12.50 

6.30 

14 

15 

13.43 

6.58 

13.45 

6.63 

13.42 

6.69 

13.39 

6.75 

15 

16 

14.38 

7.01 

14.35 

7.08 

14.32 

7.14 

14.29 

7.20 

16 

17 

15.28 

7.45 

15.25 

7.52 

15.21 

7.59 

15.18 

7.65 

17 

18 

16.18 

7.89 

16.14 

7.96 

16.11 

8.03 

16.07 

8.10 

18 

19 

17.08 

8.33 

17.04 

8.40 

17.00 

8.48 

16.97 

8.55 

19 

20 

21 

17.98 

8.77 

17.94 

8.85 

17.90 

8.92 

17.86 

9. GO 

20 
21 

18.87 

9.21 

18.83 

9.29 

18.79 

9.37 

18.75 

9.45 

22 

19.77 

9.64 

19.73 

9.73 

19.09 

9.82 

19.65 

9.90 

22 

23 

20.67 

10.08 

20.63 

10.17 

20.58 

10.26 

20.54 

10.35 

23 

24 

21.57 

10.52 

21.52 

10.61 

21.48 

10.71 

21.43 

10.80 

24 

25 

22.47 

10.96 

22.42 

11.06 

22.37 

11.15 

22.32 

11.25 

25 

26 

23.37 

11.40 

23.32 

11.50 

23.27 

11.60 

23.22 

11.70 

26 

27 

24.27 

11.84 

24.22 

11.94 

24.16 

12.05 

24.11 

12.15 

27 

28 

25.17 

12.27 

25.11 

12.38 

25.06 

12.49 

25.00 

12.60 

28 

29 

26.06 

12.71 

26.01 

12.83 

25.95 

12.94 

25.90 

13.05 

29 

30 

26.96 

13.15 

26.91 

13.27 

26.85 

13.39 
13.83~ 

26.79 

13.50 

30 

31 

27.86 

13.59 

27.80 

13.71 

27.74 

27.68 

13.95 

31 

32 

28.76 

14.03 

28.70 

14.15 

28.64 

14.28 

28.58 

14.40 

32 

33 

29.66 

14.47 

29.60 

14.60 

29.. 53 

14.72 

29.47 

14.85 

33 

34 

30.56 

14.90 

30.49 

15.04 

30.43 

15.17 

30.36 

15.30 

34 

35 

31.46 

15.34 

31.39 

15.48 

31.32 

15.62 

31.25 

15.75 

35 

36 

32.36 

15.78 

32.29 

15.92 

32.22 

16.06 

32.15 

16.20 

36 

37 

33.26 

16.22 

.33.18 

16.36 

33.11 

16.51 

33.04 

16.65 

37 

38 

34.15 

16.66 

34.08 

16.81 

34.01 

16.96 

33.93 

17.10 

38 

39 

35.05 

17.10 

34.98 

17.25 

34.90 

17.40 

34.83 

17.55 

39 

40 

35.95 

17.53 

35.87 

17.69 

35.80 

17.85 

35.72 

18.00 

40 

41 

36.85 

17.97 

36.77 

18.13 

36.69 

18.29 

36.61 

18.45 

41 

42 

37.75 

18.41 

37.67 

18.58 

37.59 

18.74 

37.51 

18.90 

42 

43 

38.65 

18.85 

38.57 

19.02 

38.48 

19.19 

38.40 

19.. 35 

43 

44 

39.55 

19.29 

39.46 

19.46 

39.38 

19.63 

39.29 

19.80 

44 

45 

40.45 

19.73 

40.36 

19.90 

40.27 

20.08 

40.18 

20.25 

45 

46 

41.34 

20.17 

41.26 

20.35 

41.17 

20.53 

41.08 

20 .  70 

46 

47 

43.24 

20.60 

42.15 

20.79 

42.06 

20.97 

41.97 

21.15 

47 

48 

43.14 

21.04 

43.05 

21.23 

42.96 

21.42 

42.86 

21.60 

48 

49 

44.04 

21.48 

43.95 

21.67 

43.85 

21.86 

43.76 

22.05 

49 

50 

8 

4^.94 

21.92 

44.84 

22.11 

44.75 

22.31 

44.65 

22.50 

50 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

o 

1 

Q 

.s 

64  Deg. 

631 

Deg. 

6Sh  Deg. 

63t  Deg. 

TRAVERSE    TABLE. 


55 


s 

s. 
p 

26  Dog. 

26k  Deg. 

26i  Deg. 

26| 

Deg. 

i 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

51 

45.84 

22.36 

45.74 

22.56 

45.64 

22.76 

15T64 

22.96 

51 

52 

46.74 

22.80 

46.64 

23.00 

46.54 

23.20 

46.43 

23.41 

52 

53 

47.64 

23.23 

47.53 

23.44 

47.43 

23.65 

47-33 

23.88 

53 

54 

48.53 

23.67 

48.43 

23.88 

48.33 

24.09  1  48  22 

24.31 

54 

55 

49.43 

24.11 

49.33 

24.33 

49.22 

24.54     49.11 

24.76 

55 

56 

50.33 

24.55 

50.22 

24.77 

50.12 

24.09 

60.01 

25.21 

56 

57 

51.23 

24.99 

51.12 

25.21 

51.01 

25.43 

50.00 

25.66 

57 

58 

52.13 

25.43 

52.02 

25.65 

51.91 

25  88 

51.79 

26.11 

58 

59 

53.03 

25.86 

52.92 

26.09 

52.80 

26.33 

52.69 

26.56 

59 

60 
61 

53.93 

26.30 

53.81 

26.54 

53.70 

26-77 

.53.58 

27.01 

60 

54.83 

26.74 

54.71 

26.98 

54.59 

27.22 

54.47 

27.46 

61 

62 

55.73 

27.18 

55.61 

27.42 

55.49 

27.66 

55.36 

27.91 

62 

63 

56.62 

27.62 

56.50 

27.86 

56.38 

28.11 

56.26 

28.36 

63 

64 

57.52 

23.06 

57.40 

28.31 

57.28 

28.56 

57.15 

28.81 

64 

65 

58.42 

28.49 

58.30 

28.75 

58.17 

29.00 

58.04 

29.26 

65 

66 

59.32 

28.93 

59.19 

29.19 

59.07 

29.45 

58.94 

29.71 

66 

67 

60.22 

29.37 

60.09 

29.63 

59.96 

29.90 

59.83 

30.16 

67 

68 

61.12 

29.81 

60.99 

30.08 

60.86 

30.34 

60.72 

30.61 

68 

G9 

62.02 

30.25 

61.88 

30.52 

61.75 

30.79 

61.62 

31.06 

69 

70 
71 

62.92 

30.69 

62.78 

30.96 

62.65 

31.23 

62.51 

31.51 

70 

63.81 

31.12 

63.68 

31.40 

63.54 

31.68 

63.40 

31.96 

71 

72 

64.71 

31.56 

64.57 

31.84 

64.44 

32.13 

64.29 

32.41 

72 

73 

65.61 

32.00 

65.47 

32.29 

65.33 

32.57 

65.19 

32.86 

73 

74 

66.51 

32.44 

66.37 

32.73 

66.23 

33.02 

66.08 

33.31 

74 

75 

67.41 

32.88 

67.27 

33.17 

67.12 

33.46 

66.97 

33.76 

75 

76 

68.31 

33.32 

68.16 

33.61 

68.01 

33.91 

67.87 

34.21 

76 

77 

69.21 

33.75 

69.06 

34.06 

68.91 

34.36 

68.76 

34.66 

77 

78 

70.11 

34.19 

69.96 

34.. 50 

69.80 

34.80 

69.65 

35.11 

78 

79 

71.00  134.63 

70.85 

34.94 

70.70 

35.25 

70.55 

35.56 

79 

80 
81 

71.90 
72.8.0 

35.07 
35.51 

71.75 

35.38 

71.59 

35.70 

71.44 

36.01 

80 

72.65 

35.83 

72.49 

36.14 

72.33 

36.46 

81 

82 

73.70 

35.95 

73.54 

36.27 

73.38 

36.. 59 

73.22 

36.91 

82 

83 

74.60 

36.38 

74.44 

.36.71 

74.28 

37.03 

74.12 

37.36 

83 

84 

75.50 

36.82 

75.34 

37.15 

75.17 

37.48 

75.01 

.37.81 

84 

85 

76.40 

37.26 

76.23 

37.59 

76.07 

37.93 

75.90 

38.26 

85 

86 

77.30 

37.70 

77.13 

38.04 

76.96 

38.37 

76.80 

38.71     86| 

87 

78.20 

38.14 

78.03 

38.48 

77.86 

38.82 

77.69 

39.16 

87 

88 

79.09 

38.58 

78.92 

.38.92 

78.75 

39.27 

78.58 

39.61 

88 

89 

79.99 

39.01 

79.82 

39.36 

79.65 

39.71 

79.48 

40.06 

89 

90 
91 

80.89 

39.45 

80.72 

39.81 

80.54 

40.16 

80.37 

40.51 

90 

81.79 

39.89 

81.62 

40.25 

81.44 

40.60 

81.26:40.96 

91 

92 

82.69    40.33 

82.51 

40.69 

82.33 

41.05 

82.15    41.41 

92 

93 

83.59    40.77 

83.41 

41.13 

83.23 

41.50 

83.05 

41.86 

93 

94 

84.49  1  41.21 

84.31 

41.58 

84.12 

41.94 

83.94 

42.31 

94 

95 

85.39    41.65 

85.20 

42.02 

85.02 

42.39 

84.83 

42.76 

95 

96 

86.28    42.08 

86.10 

42.46 

85.91 

42.83 

85.73 

43.21  !  96| 

97 

87.18    42.52 

87.00 

42.90 

86.81 

43.28 

86.62 

43.66 

97 

98 

88.08 

42.96 

87.89 

43.34 

87.70 

43.73 

187.51 

44.11 

98 

99 

88.98 

43.40 

88.79 

43.79 

88.60 

44.17 

188.40 

44.56 

99 

^00 

6 

1 

89.88 

43.84 

89.69 

44.23 

89.49 

44.62 

89.30  145.01 

100 
Q 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

64  Deg. 

631  Deg. 

631  Deg. 

63i  Deg. 

56 


niAVEK.E    TABLE. 


27  Deg. 

27i  Deg. 

271 

Deg. 

27;|  Deg. 

»• 

s 

-1 
1 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat 

Dep. 

0.89 

0.45 

0.89 

0.46 

0.89 

0.46 

0.88 

0.47 

2 

1.78 

0.91 

1.78 

0.92 

1.77 

0.92 

1.77 

0.93 

2 

3 

2.67 

1.36 

2.67 

1.37 

2.66 

1.39 

2.65 

1.40 

3 

4 

3.56 

1.82 

3.56 

1.83 

3.55 

1.85 

3.54 

1.86 

4 

5 

4.45 

2.27 

4.45 

2.29 

4.44 

2.31 

4.42 

2.33 

5 

6 

5.35 

2.72 

5.33 

2.75 

5.32 

2,77 

5.31 

2.79 

6 

7 

6.24 

3.18 

6.22 

3.21 

6.21 

3.23 

6.19 

3.26 

7 

8 

7.13 

3.63 

7.11 

3.66 

7.10 

3.69 

7.08 

3.72 

8 

9 

8.02 

4.09 

8.00 

4.12 

7.98 

4.16 

7.96 

4.19 

9 

10 

11 

8.91 

4.54 

8.89 
9.78 

4.58 

8.87 

4.62 

8.85 

4.66 

10 
11 

9.80 

4.99 

5.04 

9.76 

5.08 

9.73 

5.12 

12 

10.69 

5.45 

10.67 

5.49 

10.64 

5.54 

10.62 

5.59 

12 

13 

11. .58 

5.90 

11.56 

5.95 

11.53 

6.00 

11.. 50 

6.05 

13 

14 

12.47 

6.36 

12.45 

6.41 

12.42 

6.46 

12.39 

6.52 

14 

15 

13.37 

6.81 

13.34 

6.87  1 

13.31 

6.93 

13.27 

6.98 

15 

16 

14.26 

7.26 

14.22 

7.33 

14.19 

7.39 

14.16 

7.45 

16 

17 

15.15 

7.72 

15.11 

7.78 

15.08 

7.85 

15.04 

7.92 

17 

18 

16.04 

8.17 

16.00 

8.24 

15.97 

8.31 

15.93 

8..3« 

18 

19 

16.93 

8.63 

16.89 

8.70 

16.85 

8.77 

16.81 

8.85 

19 

20 
21 

17.82 

9.08 

17.78 

9.16  1]  17.74 

9.23 

17.70 

9.31 

20 
21 

18.71 

9.53 

18.67 

9.62  1 

18.63 

9.70 

18.58 

9.78 

22 

19.60 

9.99 

19.56 

10.07 

19.51 

10.16 

19.47 

10.24 

22 

23 

20.49 

10.44 

20.45 

1.0.53 

20.10 

10.62 

20.35 

10.71 

23 

24 

'^1.38 

10.90 

21.34 

10.99 

21.29 

11.08 

21.24 

11.17 

24 

25 

22.28 

11.35 

22.23 

11.45 

22.18 

11.54 

22.12 

n.64 

25 

26 

23.17 

11.80 

23.11 

11.90 

23.06 

12.01 

23.01 

12.11 

26 

27 

24.06 

12.26 

24.00 

12.36 

23.95 

12.47 

23.89 

12.57 

27 

28 

24.95 

12.71 

24.89 

12.82 

24.84 

12.93 

24.78 

13.04 

28 

29 

25.84 

13.17 

25.78 

13.28 

25.72 

13.39 

25.66 

13.50 

29 

30 
31 

26.73 

13.62 

26.67 
27.56 

13.74 
14.19 

26.61 

13.85 

26.55 

13.97 

30 
31 

27.62 

14.07 

27.50 

14.31 

27.43 

14.43 

32 

28.51 

14.53 

28.45 

14.65 

28.38 

14.78 

28.32 

14.90 

32 

33 

29.40 

14.98 

29.34 

15.11 

29.27 

15.24 

29.20 

15.37 

33 

34 

30.29 

15.44 

30.23 

15.57 

30.16 

15.70 

30.09 

15.83 

34 

35 

31.19 

15.89 

31.12 

16.03 

31.05 

16.16 

30.97 

16.30 

35 

36 

32.08 

16.34 

32.00 

16.48 

31,93 

16.62 

31.86 

16.76 

36 

37 

32.97 

16.80 

32.89 

16.94 

i  .32.82 

17.08 

32.74 

17.23 

37 

38 

33.80 

17.25 

33.78 

17.40 

33.71 

17.55 

33.63 

17.69 

38 

39 

34.75 

17.71 

34.67 

17.86 

34.59 

18.01 

34.51 

18.16 

39 

40 
41 

35.64 

18.16 

35.56 
36.45 

18.31 

18.77 

35.48 

18.47 

35.40 

18.62 

40 
41 

36.53 

18.6] 

36.37 

18.93 

36.28 

19.09 

42 

37.42 

19.07 

37.34 

19.23 

37.25 

19.39 

.37.17 

19.56 

42 

43 

38.31 

19.52 

38.23 

19.69 

38.14 

19.86 

38.05 

20.02 

43 

44 

39.20 

19.98 

39.12 

20.15 

39.03 

20.32 

38.94 

20.49 

44 

45 

40.10 

20.43 

40.01 

20.60 

39.92 

20.78 

39.82 

20 .  95 

45 

46 

40.99 

20.88 

40.89 

21.06 

40.80 

21.24 

40.71 

21.42 

46 

47 

41.88 

21.34 

41.78 

21.52 

41.69 

21.70 

41.59 

21.88 

47 

48 

42.77 

21.79 

42.67 

21.98 

42.58 

22.16 

42.48 

22.35 

48 

49 

43.66 

22.25 

43.56 

22.44 

43.46 

22.63 

43.36 

22.82 

49 

50 

§ 

1 
.2 

44.55 

22.70 

44.45 

22.89 

44.35 

23.09 

44.25 
Dep. 

23.28 

50 

o 

1 

to 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Lat. 

63] 

Oeg. 

«.f 

Deg. 

62^ 

Deg. 

62i  Deg. 

TRAVERSE   TABtfi. 


£7 


a 
o 
? 

"51 

27  Deg. 

2n   Deg. 

271  Deg. 

27J  Deg. 

51 

L 

at. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

45" 

44 

23.15 

45.34 

23.35 

45.24 

23.55 

45.13 

23 

75 

52 

46 

33 

23.61 

46.23 

23.81 

46.12 

24.01 

46.02 

24 

21 

52 

53 

47 

.22 

24.06 

47.12 

24.27 

47.01 

24.47 

46.90 

24 

68 

53 

54 

48 

11 

24.52 

48.01 

24.73 

47.90 

24.93 

47.79 

25 

14 

54 

55 

49 

01 

24.97 

48.90 

25.18 

48.79 

25.40 

48.67 

25 

61 

55 

5G 

49 

90 

25.42 

49.78 

25.64 

49.67 

25.86 

49.. 56 

26 

07 

56 

57 

50 

.79 

25.88 

50.67 

26.10 

50.56 

26.32 

50.44 

26 

54 

57 

58 

51 

69 

26.33 

51.56 

26.. 56 

51.45 

26.78 

51.33 

27 

01 

58 

59 

52 

57 

26.79 

52.45 

27.01 

52.33 

27.24 

52.21 

27^ 

47 

59 

60 
61 

53 

46 

27.24 

53.34 

27.47 

53.22 

27.70 

.53.10 

27 

94 

60 
61 

54 

.35- 

27.69 

54.23 

27.93 

54.11 

28.17 

53.93 

28 

40 

62 

55 

24 

28.15 

55.12 

28.39  !l  54.99 

28.63 

.54.87 

23 

87 

62 

63 

56 

.13 

28 .  60 

.56.01 

28.85 

155.88 

29.09 

55.75 

29 

33 

63 

64 

57 

02 

29.06 

56.90 

29.30 

56.77 

29.55 

56.64 

29 

80 

64 

65 

57 

92 

29.51 

57.79 

29.76 

57.66 

30.01 

57.. 52 

30 

36 

65 

66 

58 

81 

29.96 

.58 .  68 

30.22  ll  58.54 

30.48 

58.41 

30 

73 

66 

67 

59 

70 

30.42 

.59.56 

30.68  |i  59.43 

30.94 

59.29 

31 

20 

67 

68 

60 

59 

30.87 

60.45 

31.14!  60.32 

31.40 

60.18 

31 

66 

68 

69 

61 

48 

31.33 

61.34 

3] .59  i  61.20 

31.86 

61.06 

32 

13 

69 

70 

71 

62 

.37 

31.78 

62.23 

32.05  J  62.09 

32.32 

61.95 

32 

59 

70 
71 

63 

26 

32.23 

63.12 

32.51  ji  62.98 

32.78 

62.83 

33 

06 

7^2 

64 

15 

32.69 

64.01 

32.97  63.86 

33.25 

63.72 

33 

52 

72 

73 

65 

.04 

33.14 

64.90 

33.42 

64.75 

.33.71 

64.60 

33 

99 

73 

74 

65 

93 

33.60 

65.79 

33.88 

65.64 

34.17 

65.49 

34 

46 

74 

75 

06 

83 

34.05 

66.68 

34.34 

66 .  53 

34.63 

66.37 

34 

92 

75 

76 

67 

72 

.34.50 

67.57 

34.80 

67.41 

35.09 

i  67.26 

35 

39 

76 

77 

68 

61 

34.96 

68.45 

35.26 

68.30 

35.55 

68.14 

35 

85 

77 

78 

69 

50 

35.41 

69.34 

35.71 

69.19 

.36.02 

69.03 

36 

32 

78 

79 

70 

39 

35.87 

70.23 

36.17 

70.07 

36.48 

69.91 

36 

78 

79 

80 
81 

71 

28 

36.32 

71.12 
72.01 

36.63 
37.09 

70.96 

36.94 

70.80 
71.68" 

37 
37 

25 
71 

80 
81 

72 

17 

36.77 

71.85 

37.40 

82 

73 

06 

37.23 

72.90 

37.-05 

72.73 

37.86 

72 .  57 

38 

18 

82 

83 

73 

95 

37.68 

73.79 

33.00 

73.62 

38.33 

73.45 

38 

65 

83 

84 

74 

84 

38.14 

74.68 

38.46 

74.51 

38.79 

74.34 

39 

11 

84 

85 

75 

74 

38.59 

75.57 

38.92 

75.40 

39.25 

75.22 

39 

58 

85 

86 

76 

63 

39.04 

76.46 

39.38 

76.28 

39.71 

76.11 

40 

04 

86 

87 

77 

52 

39.50 

77.34 

39.83 

77.17 

40.17 

76.99 

40 

51 

87 

88 

78 

41 

39.95 

78.23 

40 .29 

78.06 

40.63 

77.88 

40 

97 

88 

89 

79 

30 

40.41 

79.12 

40.75 

78.94 

41.10 

1 78.76 

41 

44 

89 

90 
91 

80 

19 

40.86 

»0.01 

41.21 

79.83 

41. ..56 

79.65 

41 

91 

90 
91 

81 

08 

41.31 

80.90 

41.67 

80.72 

42.02 

80.53 

42 

37 

92 

81 

97 

41.77 

81.79 

42.12 

81.60 

42.48 

81.42 

42 

84 

92 

93 

82 

86 

42.22 

82.68 

42.58 

82.49 

42.94 

82.30 

43 

30 

93 

94 

83 

75 

42.68 

83.57 

43.04 

83.38 

43.40 

83.19 

43 

77 

94 

95 

84 

65 

43.13 

84.46 

43.50 

84.27 

43.87 

84.07 

44 

23 

95 

96 

85 

54 

43.58! 

85.35 

43.96 

85.15 

44.33 

84.96 

44 

70 

96 

97 

86 

43 

44.04 

86.23 

44.41 

86.04 

44.79 

85.84 

45 

16 

97 

98 

87 

32 

44.49 

87.12 

44.87 

86.93 

45.25 

86.73 

45 

63 

98 

J)  9 

88 

21 

44.95 

88.01 

45.33 

87.81 

45.71 

87.61 

46 

10 

99 

100 

V 

o 

s 
a 

.2 
Q 

89 
Dt 

10 

45.40 

88.90 

45.79 

88.70 

46.17 

88.50 

46 

56 

100 

o 

a 
a 

jp. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

63  Deg. 

62f  Deg. 

i 

62}j  Deg. 

62;  Deg. 

58 


TRAVERSE    TABLE. 


28  Deg. 

28i  Deg. 

2H  Deg. 

281  Deg. 

i! 

Lat. 

Dep. 

Lat. 

0.88 

Dep. 

0.47 

Lai. 

Dep. 

Lat.  1   Dep. 

i 

1 

0.88 

0.47 

0.88 

0.48 

0.88      0.48 

1 

2 

1.77 

0.94 

1.76 

0.95 

1.76 

0.95 

1.75      0.96 

2 

3 

2.65 

1.41 

2.64 

1.42 

2.64 

1.43 

2.63 

1.44 

3 

4 

3.53 

1.88 

3.52 

1.89 

3.52 

1.91 

3.51 

1.92 

4 

5 

4.41 

2.35 

4.40 

2.37 

4.39 

2.39 

4.38 

2.40 

5 

6 

5.^0 

2.82 

5.29 

2.84 

5.27 

2.86 

5.26 

2.89 

6 

7 

6.18 

3.29 

6.17 

3.31 

6.15 

3.34 

6.14 

3.37 

7 

8 

7.06 

3.76 

7.05 

3.79 

7.03 

3.82 

7.01 

3.85 

8 

9 

7n95 

4.23 

7.93 

4.26 

7.91 

4.29 

7.89 

4.33 

9 

10 
11 

8.83 

4.69 

8.81 

4.73 

8.79 

4.77 

8.77 

4.81 

10 

9.71 

5.16 

9.69 

5.21 

9.67 

5.25 

9.64 

5.29 

11 

12 

10.60 

5.63 

10.57 

5.68 

10.55 

5.73 

10.52 

5.77 

12 

13 

11.48 

6.10 

11.45 

6.15 

11.42 

6.20  ! 

11.40 

6.25 

13 

14 

12.36 

6.57 

12.33 

6.63 

12.30 

6.68  1 

12.27 

6.73 

14 

15 

13.24 

7.04 

13.21 

7.10 

13.18 

7.16 

13.15 

7.21 

15 

16 

14.13 

7.51 

14.09 

7.57 

14.06 

7.63 

14.03 

7.70 

16 

17 

15.01 

7.98 

14.98 

8.05 

14.94 

8.11 

14.90 

8.18 

17 

18 

15.89 

8.45 

15.86 

8.52 

15.82 

8.59 

15.78 

8.66 

18 

19 

16.78 

8.92 

16.74 

8.99 

16.70 

9.07!!  16.66 

9.14 

19 

20 

17.66 

9.39  1  17.62 

9.47 

17.58 

9.54  : 

10.02 

17.53 

9.62 

20 

21 

18.54 

9.86 

18.50 

9.94 

18.46 

18.41 

10.10 

21 

22 

19.42 

10.33 

19.38 

10.41 

19.33 

10.50  ,  19.29 

10.58 

22 

23 

20.31 

10.80 

20.26 

10.89 

20.21 

10.97    20.16 

11.06 

23 

24 

21.19 

11.27 

21.14 

11.36 

21.09 

11.45  1 21.04 

11.54 

24 

25 

22.07 

11.74 

22.02 

11.83 

21.97 

11.93 

21.92 

12.02 

25 

26 

22.96 

12.21 

22.90 

12.31 

22.85 

12.41 

22.79 

12.51 

26 

27 

23.84 

12.68 

23.78 

12.78 

23.73 

12.88 

23.67 

12.99 

27 

28 

24.72 

13.15 

24.66 

13.25 

24.61 

13.36 

24.55 

13.47 

28 

29 

25.61 

13.61 

25.55 

13.73 

25.49 

13.84 

25.43 

13.95 

29 

30 

26.49 

14.08 

26.43 

14.20 

26.36 

14.31 

26.30 

14.43 

30 
31 

31 

27.37 

14.55 

27.31 

14.67 

27.24 

14.79 

27.18 

14.91 

32 

28.25 

15.02 

28.19 

15.15 

28.12 

15.27 

28.06 

15.39 

32 

33 

29.14 

15.49 

29.07 

15.62 

29.00 

15.75 

28.93 

15.87 

33 

34 

30.02 

15.96 

29.95 

16.09 

29.88 

16.22 

29.81 

16.35 

34 

35 

30.90 

16.43 

30.83 

16.57 

30.76 

16.70 

30.69 

16.83 

35 

36 

31.79 

16.90 

31.71 

17.04 

31.64 

17.18 

31.56 

17.32 

36 

37 

32.67 

17.37 

32.59 

17.51 

32.52 

17.65 

32.44 

17.80 

37 

38 

33.55 

17.84 

33.47 

17.99 

33.39 

18.13 

33.32 

18.28 

38 

39 

34.43 

18.31 

34.35 

18.46 

34.27 

18.61 

34.19 

18.76 

39 

40 

35.32 

18.78 

35.24 

18.93 

35.15 

19.09 

35.07 

19.24 

40 
41 

41 

36.20 

19.25 

36.12 

19.41 

36. OQ 

19.56 

"35.95 

19.72 

42 

37.08 

19.72 

37.00 

19.88 

36.91 

20.04 

36.82 

20.20 

42 

43 

37.97 

20.19 

37.88 

20.35 

37.79 

20.52 

37.70 

20.68 

43 

44 

38.85 

20.66 

38.76 

20.83 

38.67 

20.99 

38.58 

21.16 

44 

45 

39.73!  21.13 

39.64 

21.30 

39.55 

21.47 

.33.45 

21.64 

45 

46 

40.62    21.60  11  40.52 

21.77 

40.43 

21.95 

! 40.33 

22.13 

46 

47  141.50!  22.07 

41.40 

22.25 

41.30 

22.43 

141.21 

22.61 

47 

48 

42.38  122.53 

42.28 

22.72 

42.18 

22.90 

'42.08 

23.09 

48 

49 

43.26  1  23.00 

143.16 

23.19 

43.06 

23.38 

; 42.96 

23.57 

49 

50 

1 

o 

44.15  1  23.47 
Dep.       Lat. 

1 44.04 

23.67 

43.94 

23.86 
Lat. 

1 43.84 

24.05 

50 

Dep. 

Lat. 

Dep. 

;   Dep. 

Lat. 

5 

62 

Deg. 

61J  Deg. 

i 

6HDeg. 

6U  Deg. 

i 

TRAVERSE    TABLE. 


f)! 


! 7 

? 

s 
n 
a 

"51 

28  Ueg. 

28i  Deg. 

28i  Deg. 

281  De.r. 

a 

? 

~51 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

45.03 

23.94! 

44.93 

24.14 

44.82 

24.34  1 

44.71 

24.. 53 

52 

45.91 

24.41  ' 

45.81 

24.61 

45.70 

24.81 

45.59 

25.01 

52 

53 

46.80 

24.88 i 

46.69 

25.09 

46.58 

25.29 

46.47 

25.49 

53 

54 

47.68 

25.35  i 

47.57 

25.56 

47.46 

25.77 

47.34 

25.97 

54 

55 

48.56 

25.82 i 

48.45 

26.03 

48.33 

26.24 

48.22 

26.45 

56 

56  j 

49.45 

26.29  1 

49.33 

26.51 

49.21 

26.72 

49.10 

26.94 

56 

57 

50.33 

26.76 

50.21 

26.98 

50.09 

27.20 

49.97 

27.42 

57 

58 

51.21    27.23; 

51.09 

27.45 

50.97 

27.68 

50.85 

27.90 

58 

59 

52.09 

27.70  1 

51.97 

27.93 

51.85 

28.151 

51.73 

28,38 

59 

60 
61 

.52.98 

28.17! 

52.85 

28.40 

52.73 

28.63  J 

52.60 

28.86 

60 
61 

53.86 

28.64; 

53.73 

28.87 

53.61 

29.11  ! 

53.48 

29.34 

62 

54.74 

29.11  1 

54.62 

29.35 

54.49 

29.58' 

54.36 

29.82 

62 

63 

55.63 

29. 5s : 

55.50 

29.82 

.55.37 

30.06' 

55.23 

30.30 

63 

64 

56.51 

30.05 

56.38 

30.29 

56.24 

30.54! 

56.11 

30.78 

64 

65 

57.39 

30.52 i 

57.26 

30.77 

57.12 

31.02 

56.99 

31.26 

65 

66 

.58.27 

30.99' 

58.14 

31.24 

58.00 

31.40 

57.86 

31.75 

66 

67 

59.16 

31.45' 

59.02 

31.71 

58.88 

31.97 

58.74 

32.23 

67 

68 

60.04 

31.92 

59.90 

.32.19 

59.76 

32.45 

59.62 

32.71 

68 

69 

60.92 

32.39 

60.78 

32.66 

60.04 

32.92 

60.49 

33.19 

69 

70 

61.81 

32.86 

61.66 

33.13 

61.52 

33.40 

61.37 

33.67 

70 

7) 

62.69    33.33 

62.54 

33.61 

62.40 

33.88 

62.25 

34.15 

71 

72 

63.57 

33.80 

63.42 

34.08 

63.27 

34.36 

63.12 

34.63 

72 

73 

64.46 

34.27 

64.30 

34.55 

64.15 

.34.83 

64.00 

35.11 

73 

74 

65.34 

34.74 

65.19 
66.07 

35.03 

65.03 

35.31 

64.88 

35.59 

74 

75 

66.22 

35.21 

35.50 

65.91 

35.79 

65.75 

36.07 

75 

76 

67.10 

35.68 

66.95 

35.97 

66.79 

36.26 

66.63 

36.56 

76 

77 

67.99 

36.15 

67.83 

30.45 

67.67 

36.74 

67.51 

37.04 

77 

78 

68.87 

36.62 

68.71 

36.92 

68.. 55 

37.22 

68.38 

37.52 

78 

79 

69.75 

37.09 

69.59 

37.39 

69.43 

37.70 

69.26 

38.00 

79 

80 
81 

70.64 

37.56 

70.47 

37.87 

70.31 

38.17 

1 70.14 

38.48 

80 
'81 

71.52 

38.03 

71.. 35 

38.34 

71.18 

38.65 

'71.01 

38.96 

82 

72.40 

38.50 

72.23 

38.81 

72.06 

39.13 

',71.89 

.39.44 

82 

83 

73.28 

38.97 

73.11 

39.29 

72.94 

39.60 

1 72.77 

3.9.92 

83 

84 

74.17 

39.44 

73.99 

39.70 

73.82 

40.08 

: 73.64 

40.40 

84 

85 

75.05 

39.91 

74.88 

40.23 

74.70 

40.. 56 

174.. 52 

40.88 

85 

86 

75 .  93 

40.37 

75.76 

40.71 

75  58 

41.04 

!  75.40 

41.36 

86 

87 

76.82 

40.84 

76.64 

41.18 

76.46 

41.51 

1  76.28 

41.85 

87 

88 

77.70 

41.31 

77.52 

41.65 

77.34 

41.99 

177.15 

42.33 

88 

89 

78.58 

41.78 

78.40 

42.13 

78.21 

42.47 

,78.03 

42.81 

89 

90 

79.47 

42.25 

79.28 

42.60 

79.09 

42.94 

! 78.91 

43.29 

90 

91 

80.35 

42.72 

80.16 

43.07 

79.97 

43.42 

i  79.78 

43.77 

91 

92 

81.23 

43.19 

81.04 

43.55 

80.85 

43.90 

80.66 

44.25 

92 

93 

82.11 

43.66 

81.92 

44.02 

81.73 

44.38 

81.54 

44.73 

93 

94 

83.00 

44.13 

82.80 

44.49 

82.61 

44.85 

82.41 

45.21 

94 

95 

83.88 

44.60 

83.68 

44.97 

83.49 

45.33 

83.29 

45.69 

95 

96 

84.76 

45.07 

84.57 

45.44 

84.37 

45.81 

84.17 

46.17 

96 

97 

85.65 

45.54 

85.45 

45.91 

85.25 

46.28 

85.04 

46.66 

97 

98 

86.53  146.01 

86.33 

46.39 

86.12 

46.76 

85.92 

47.14 

98 

99 

87.41 

46.48 

87.21 

46.86 

87.00 

47.24 

86.80 

47.62 

99 

100 
1 

5 

88.29 

46.95 

88.09 

47.33 

87.88 

47.72 

87.67 

48.10 

lOO 

i 
1 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat 

Dep. 

Lat. 

1      62  Deg. 

61|  Deg. 

eu  Dfig- 

6U  Deg. 

60 


TRAVERSE   TABLE. 


o 

o 
? 

1 

29  De^r. 

29^  Deg.       ! 

29i  Deg. 

291 

Deg. 

5 

a 
o 
9 

Lat. 

Dep. 

Lat. 

Dep. 

Lat.  1 

Dep. 

Lat. 

Dop. 

0.87 

0.48 

0.87 

0.49 

0.87  1 

0.49  1 

0.87 

0 .  50 

1 

2 

1.75 

0.07 

1.74 

0.98 

.1.74 

0.98 

1.74 

0.99 

2 

3 

2.62 

1.45 

2.62 

1.47 

2.61 

1.48 

2.00 

1.49 

3 

4 

3.50 

1.94 

3.49 

1.95 

3.48 

1.97 

3.47 

1.98 

4 

5 

4.37 

2.42 

4.36 

2.44 

4.35 

2.46 

4.34 

2.48 

5 

6 

6.25 

2.91 

5.23 

2.93 

5.22 

2.95 

6.21 

2.98 

6 

7 

6.12 

3.. 39 

6.11 

3.42 

6.09 

3.45 

6.08 

3.47 

7 

8 

7.00 

3.88 

6.98 

3.91 

6.96 

3.94 

6.95 

3.97 

8 

9 

7.87 

4.36 

7.85 

4.40 

7.83 

4.43 

7.81 

4.47 

9 

10 

8.75 

4.85 

8.72 

4.89 

8.70 
9.57 

4.92 
5.42 

8.68 

4.90 

10 
11 

11 

9.62 

5.33 

9.60 

5.37 

9.55 

5.46 

12 

10.50 

6.82 

10.47 

5.86 

10.44 

6.91 

10.42 

5.95 

12 

13 

11.37 

6.30 

11.34 

6.35 

11.31 

6.40 

11.29 

6.45 

13 

14 

12.24 

6.79 

12.21 

6.84 

12.18 

6.89 

12.16 

6.95 

14 

15 

13.12 

7.27 

13.09 

7.33 

13.06 

7.39 

13.02 

7.44 

15 

16 

13.99 

7.76 

13.96 

7.82 

13.93 

7.88 

13.89 

7.94 

16 

17 

14.87 

8.24 

14.83 

8.31 

14.80 

ft.. 37 

14.76 

8.44 

17 

18 

15.74 

8.73 

15.70 

8.80 

15.67 

8.86 

15.63 

8.93 

18 

19 

16.62 

9.21 

16.58 

9.28 

16. .54 

9.36 

16.50 

9.43 

19 

20 
21 

17.49 
18.37 

9.70 
10.18! 

17.45 
18.32 

9.77 
10.26 

17.41 

18.23 

9.85 
10.34 

17.36 

9.92 

20 

18.23 

10.42 

21 

22 

19.24 

10.67  1 

19.19 

10.75 

19.15 

10.83 

19.10 

10.92 

22 

23 

20.12 

11.15  1 

20.07 

11.24 

20.02 

11.33 

19.97 

11.41 

23 

24 

20.99 

11.64 

20.94 

11.73 

20.89 

11.82 

20.84 

11.91 

24 

25 

21.87 

12.12 

21.81 

12.22 

21.76 

12.31 

21.70 

12.41 

25 

26 

22.74 

12.60 

22.68 

12.70 

22.63 

12.80 

22.57 

12.90 

26 

27 

23.61 

13.09 

23.56 

13.19 

23.50 

13.30 

23.44 

13.40 

27 

28 

24.49 

13.57 

24.43 

13.68 

24.37 

13.79 

24.31 

13.89 

28 

29 

25.36 

14.06 

25.30 

14.17 

25.24 

14.28 

25.18 

14.39 

29 

30 
31 

26.24 

14.54 

26.17 

14.66 

26.11 

14.77 

26.05 
26.91 

14.89 
15.38 

30 
31 

27.11 

15.03 

27.05 

15.15 

26.98 

15.27 

32 

27.99 

15.51 

27.92 

15.64 

27.85 

15.76 

27.78 

15.88 

32 

33 

28.86 

16.00 

28.79 

16.12 

28.72 

16.25 

28.65 

16.38 

33 

34 

29.74 

16.48 

29.66 

16.61 

29.59 

16.74 

29.52 

16.87 

34 

35 

30.61 

16.92 
17. 4d 

30.54 

17.10 

30.46 

17.23 

.30.39 

17.37 

35 

36 

31.49 

31.41 

17.59 

31.33 

17.73 

31.26 

17.86 

36 

37 

32.36 

17.94 

32.28 

18.08 

32.20 

18.22 

32.12 

18.36 

37 

38 

33.24 

18.42 

33.15 

18.57 

33.07 

18.71 

32.99 

18.86 

38 

39 

34.11 

18.91 

34.03 

19.06 

33.94 

19.20 

33.86 

19.35 

39 

40 
41 

34.98 

19.39 

34.90 
35.77 

19.54 
20.03 

34.81 

19.70 

34.73 

19.85 

40 

1  41 

35.86 

19.88 

35 .  68 

20.19 

35.60 

20.34 

42 

36.73 

20.36 

36.64 

20.52 

36.55 

20.68 

36.46 

20.84 

!  42 

43 

37.61 

20.85 

37.52 

21.01 

37.43 

21.17 

37.. 33 

21.34 

1  43 

44 

3S.48 

21.33 

38.39 

21.50 

38.. 30 

21.67 

38.20 

21.83 

1  44 

45 

39.36 

21.82 

39.26 

21.99 

39.17 

22.16 

39.07 

22.33 

i  45 

46 

40.23 

22.30 

40.13 

22.48 

140.04 

22.65 

39.94 

22.83 

1  46 

47 

41.11 

22.79 

41.01 

22.97 

1 40.91 

23.14 

40.81 

23.3? 

i  47 

48 

41.98 

23.27 

41.88 

23.45 

41.78 

23.68 

41.67 

23.82 

!  48 

49 

42.86 

1 23.76 

42.75 

23.94 

42.65 

24.13 

42.54 

24.31 

1  49 

50^ 

43.73 

!  24.24 

43.62 

24.43 

43.. 52 

24.62 

43.41 

24.81 

1   50 

1 
Q 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

61 

Deg. 

601  Deg. 

60,^ 

Deg. 

60i 

Deg. 

(5 

TRAVKRSE    TABLE. 


61 


s 
51 

29  Deg. 

29i  Deg. 

29^  Deg. 

291  Deg. 

1 

Lat. 

Dep. 

Lat. 

Dep. 

Lat.   Dep. 

Lat. 

Dep. 

44.61 

24.73 

44.50 

24.92 

44.39 

25.11 

44.28 

25.31 

51 

52 

45.48 

25.21 

45.37 

25.41 

45.26 

25.01 

45.15 

25.80 

52 

53 

46.35 

25.69 

46.24 

25.90 

46.13 

26.10 

46.01 

26.30 

53 

54 

47.23 

26.18 

47.11 

26.39 

47.00 

26.59 

46.88 

26.80 

54 

55 

48.10 

26.66 

47.99 

26.87 

47.87 

27.08 

47.75 

27.29 

55 

50 

48.98 

27.15 

48.86 

27.36 

48.74 

27.. 58 

48.62 

27.79 

50 

57 

49.85 

27.63 

49.73 

27.85 

49.61 

28.07 

49.49 

28.28 

57 

58 

50.73 

28.12 

50.60 

28.34 

50.48 

28.56 

50.36 

28.78 

58 

59 

51.60 

28.60 

51.48 

28.83 

51.35 

29.05 

51.22 

29.28 

59 

60 
61 

52.48 
53.35 

29.09 
29.57 

.52.35 

29.32 

52.22 

29.55 

52.09 

29.77  1 

60 
61 

53.22 

29.81 

53.09 

30.04 

52.96 

30.2? 

62 

54.23 

30.06 

54.09 

30.29 

53.96 

30., 53 

53.83 

30.77 

62 

63 

55.10 

30.54 

54.97 

30.78 

.54.83 

31.02 

54.70 

31.26 

63 

64 

55.98 

31.03 

55.84 

31.27 

55.70 

31.52 

55.56 

31.76 

64 

65 

56.85 

31.51 

.56.71 

31.76 

56.57 

32.01 

56.43 

32.25 

05 

66 

.57.72 

32.00 

57.58 

32.25 

57.44 

32.50 

.57.30 

32.75 

66 

67 

.58.60 

32.48 

.58.46 

32 .  74 

.58.31 

32.99 

58.17 

33.25 

67 

68 

.59.47  .32.97  1 

59.33 

33.23 

.59.18 

33.48 

59.04 

33.74 

68 

69 

60.35 

33.45 

60.20 

33.71 

60.05 

33.98 

59.91 

34.24 

69 

70 
71 

61.22 

33.94 

61.07 

34.20 
34.69 

00.92 

34.47 

60.77 
61.64 

34.74 

_70 

62.10 

34.42 

61.95 

61.80 

34.96 

35.23 

71 

72 

62.97 

34.91 

62.82 

35.18 

62.67 

35,45 

62.51 

35.73 

72 

73 

63.85 

35.39 

63.69 

35.67 

63.54 

35.95 

63.38 

.36.22 

73 

74 

64 .  72 

35.88 

64.. 56 

36.16 

64.41 

36.44 

64.25 

36.72 

74 

75 

65.60 

36.36 

65.44 

36.65 

65.28 

36.93 

65.11 

37.22 

75 

76 

66.47 

36.85 

66.31 

37.14 

66.15 

37.42 

65.98 

37.71 

76 

77 

67.35 

37.33 

67.18 

37.62 

67.02 

37.92 

66.85 

38.21 

77 

78 

68.22 

37.82 

68.05 

38.11 

67.89 

38.41 

67.72 

38.70 

78 

79 

69.09 

38.. 30 

68.93 

38.60 

68.76 

38.90 

68.59 

39.20 

79 

80 
81 

69.97 
70.84 

38 .  78 

69.80 

39.09 
39.58 

69.63 

39.39 

69.46 

39.70 

80 
81 

39.27 

70.67 

70.. 50 

39.89 

70.32 

40.19 

82 

71.72 

39.75 

71.54 

40.07 

71.37 

40.38 

71.19 

40.69 

82 

83 

72.59 

40.24 

72.42 

40.56 

72.24 

40.87 

72.06 

41.19 

83 

84 

73.47 

40.72 

73.29 

41.04 

73.11 

41.36 

72.93 

41.68 

84 

85 

74.:i4 

41.21 

74.16 

41.. 53 

73.98 

41.86 

1 73.80 

42.18 

85 

86 

75.22 

41.69 

75.03 

42.02 

74.85 

42.35 

74.67 

42.67 

86 

87 

76.09 

42.18 

75.91 

42.51 

75.72 

42.84 

75.53 

43.17  1  87 

88 

76.97 

42.63 

76.78 

43.00 

76.59 

43.33 

76.40 

43 .  67 

88 

89 

77.84 

43.15 

77.65 

43.49 

77.46 

43.83 

77.27 

44.10 

89 

90 
91 

78.72 

43.63 

78 .  52 

43.98 

78.33 

44.32 

178.14 

44.60 

90 

79.59 

44.12 

79.40" 

44.46 

79.20 

44.81 

79.01 

45.10 

91 

92 

80.46 

44.60 

80.27 

44.95 

80.07 

45.30 

79.87 

45.05 

92 

93 

81.34 

145.09 

81.14 

45.44 

80.94 

45.80 

1  80.74 

46.15 

93 

94 

82.21 

1 45 . 57 

82.01 

45.93 

81.81 

46.29 

1  81.61 

46.64 

94 

95 

83.09 

46.06 

82.89 

46.42 

82.68 

46.78 

ii  82.48 

47.14 

95 

96 

83.96 

1 46 . 54 

83.70 

46.91 

83.55 

47.27 

;  83.35 

47,64 

96 

97 

84.84 

47.03 

84.63 

47.40 

84.42 

47.77 

f-  84.22 

48.13 

97 

9S 

85.71 

47.51 

85.50 

47.88 

1  85.29 

48.20 

:  85.08 

48.63 

98 

99 

86., 59 

: 48.00 

86.38 

48.37 

Ij  80.17 

48.75 

S 85.95 

49.13 

99 

100 

187.46 

'48.48 

87.25 
Dep. 

48.86 
Lat. 

!  87.04 

49.24 

ii  86.82 

49.62 

100 

i 

.2 

O 

Dep. 

1 

j  Lat. 

1  Dep, 

Lat. 

!  Dep. 

Lat. 

61 

Deg. 

60!  DefT. 

60*  Deg. 

ll 

il  eOi   Deg. 

21 


i.<y 


TRAVERSE    TABLE. 


x' 

3 
? 
1 

1 
30  Deg. 

301  Deg. 

30| 

Deg. 

30|  Deg. 

55' 

1 
P 

1 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

0.87 

0..50 

0.86 

0.50 

0.86 

0.51 

0.86 

0.51 

2 

1.73 

1.00 

1.73 

1.01 

1.72 

1.02 

1.72 

1.02 

2 

3 

2.60 

1.50 

2.59 

1.51 

2.58 

1.52  1 

2.58 

1.53 

3 

4 

3.46 

2.00 

3.46 

2.02 

3.45 

2.03 

3.44 

2.05 

4 

5 

4.33 

2.50 

4.32 

2.52 

4.31 

2.54 

4.30 

2.56 

5 

6 

5.20 

3.00 

5.18 

3.02 

5.17 

3.05 

5.16 

3^7 

6 

7 

6.06 

3.50 

6.05 

3.53 

6.03 

3.55 

6.02 

3.58 

7 

8 

6.93 

4.00 

6.91 

4.03 

6.89 

4.06 

6.88 

4.09 

8 

9 

7.79 

4.50 

7.77 

4.53 

7.75 

4.57 

7.73 

4.60 

9 

10 
11 

8.66 

5.00 

8.64 

6.04 

8.62 

5.08 

8.59 

5.11 

10 
11 

9.53 

5.50 

9.50 

5.54 

9.48 

5.58 

9.45 

5.62 

12 

10.39 

6.00 

10.37 

6.05 

10.34 

6.09 

10.31 

6.14 

12 

13 

11.26 

6.50 

11.23 

6.55 

11.20 

6.60 

11.17 

6.65 

13 

14 

12.12 

7.00 

12.09 

7.05 

12.06 

7.11 

12.03 

7.16 

14 

15 

12.99 

7.50 

12.96 

7.56 

12.92 

7.61 

12.89 

7.67 

15 

16 

13.86 

8.00 

13.82 

8.06 

13.79 

8.12 

13.75 

8.18 

16 

17 

14.72 

8.50 

14.69 

8.56 

14.65 

8.63 

14.61 

8.69 

17 

18 

15.59 

9.00 

15.55 

9.07 

15.51 

9.14 

15.47 

9.20 

18 

19 

16.45 

9.50 

16.41 

9.57 

16.37 

9.64 

16.33 

9.71 

19 

20 
21 

17.32 

10.00 

17.28 

10.08 

17.23 

10.15 
10.66 

17.19 

10.23 

20 

21 

18.19 

10.50 

18.14 

10.58  i 

18.09 

18.05 

10.74 

22 

19.05 

11.00 

19.00 

11.08 

18.96 

11.17 

18.91 

11.25 

22 

23 

19.92 

11.50 

19.87 

11.59! 

19.82 

11.67 

19.77 

11.76 

23 

24 

20.78 

12.00 

20.73 

12.09, 

20.68 

12.18 

20.63 

12.27 

24 

25 

21.65 

12.. 50 

21.60 

12.59 

21.54 

12.69 

21.49 

12.78 

25 

26 

22.52 

13.00 

22.46 

13.10 

22.40 

13.20 

22.34 

13.29 

26 

27 

23.38 

13.. 50 

23.32 

13.60 

23.26 

13.70 

23.20 

13.80 

27 

28 

24.25 

14.00 

24.19 

14.11 

24.13 

14.21 

24.06 

14.32 

28 

29 

25.11 

14.50 

25.05 

14.61 

24.99 

14.72 

24.92 

14.83 

29 

30 
31 

25.98 

15.00 

25.92 

15.11 

25.85 

15.23 

25.78 

15.34 

30 
31 

26.85 

15.50 

26.78 

15.62 

26.71 

15.73 

26.64 

15.85 

32 

27.71 

16.00 

27.64 

16.12 

27.57 

16.24 

27.50 

16.36 

32 

33 

28.58 

16.50 

28.51 

16.62 

28.43 

16.75 

28.36 

16.87 

33 

34 

29.44 

17.00 

29.37 

17.13 

29.30 

17.26 

29.22 

17.38 

34 

35 

30.31 

17.50 

30.23 

17.63 

30.16 

17.76 

30.08 

17.90 

35 

36 

31.18 

18.00 

31.10 

18.14 

31.02 

18.27 

30.94 

18.41 

36 

37 

32.04 

18.50 

31.96 

18.64 

31.88 

18.78 

31.80 

18.92 

37 

38 

32.91 

19.00 

32.83 

19.14 

32.74 

19.29 

.32.66 

19.43 

38 

39 

33.77 

19.50 

33.69 

19.65 

33.60 

19.79 

,33.52 

19.94 

39 

40 
41 

34.64 

20.00 

34.55 

20.15 

34.47 

20.30 

34.38 

20.45 

40 
41 

35.51 

20.. 50 

35.42 

20.65 

35.33 

20.81 

35.24 

20.96 

42 

36.37 

21.00 

36.28 

21.16 

36.19 

21.32 

36.10 

21.47 

42 

43 

37.24 

21.50 

37.14 

21.66 

37.05 

21.82 

36.95!  21.99 

43 

44 

38.11 

22.00 

38.01 

22.17 

37.91 

22.33 

37.81  I  22.50 

44 

45 

38.97 

22.50 

38.87 

22.67 

.38.77 

22.84 

38.67 

23.01 

45 

46 

39.84 

23.00 

139.74 

23.17 

39.63 

23.. 35 

.39.53 

23.52 

46 

47 

40.70 

23.50 

40.60 

23.68 

40.50 

23.85 

40.39 

24.03 

47 

48 

41.57 

24.00 

41.46 

24.18 

41.36 

24.36 

41.25 

24.54 

48 

49 

42.44 

24.50 

42.33 

24.68 

42.22 

24.87 

42.11 

25.05 

49 

50 

1 

.2 

43.30 

25.00 

43.19 

25.19 

43.08 

25.38 

42.97 

25. 5G 

_50 

3 
.2 

Dep. 

Lat. 

Dep. 

591 

Lat. 
Dog. 

Dep. 

Lat. 

Dep. 

Lat. 

60  I 

3eg. 

59^, 

Deg. 

59  i  D^yr. 

TRAVT:T?sr;    TAHLE. 


63 


o 
s 

p 

3 

? 

51 

30  Deg. 

30i  Deg. 

SOi  Deg. 

301  Deg. 

O 

• 

51 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

44.17 

25.50 

44.06 

25.69 

43.94 

25.88 

43.83 

26.08 

52 

45.03 

26.00 

44.92 

26.20 

44.80 

26.39 

44.69 

26.59 

52 

53 

45.90 

26.50 

45.78 

26.70 

45.67 

26.90 

45.55 

27.10 

53 

54 

46.77 

27.00 

46.65 

27.20 

46.53 

27.41 

46.41 

27.61 

54 

55 

47.63 

27.50 

47.51 

27.71 

47.39 

27.91 

47.27 

28.12 

55 

56 

48.50 

28.00 

48.37 

28.21 

48.25 

28.42 

48.13 

28.63 

56 

57 

49.36 

28.50 

49.24 

28.72 

49.11 

28.98 

48.99 

29.14 

57 

58 

50.23 

29.00 

50.10 

29.22 

49.97 

29.44 

49.85 

29.65 

58 

59 

51.10 

29.50 

50.97 

29.72 

50.84 

29.94 

50.70 

30.17 

59 

60 
61 

51.96 

30.00 

51.83 

30.23 

51.70 

30.45 

51.56 

52.42 

30.68 

60 

52.83 

30.50 

52.69 

30.73 

52.. 56 

30.96 

31.19 

61 

62 

53.69 

31.00 

53.56 

31.23 

53.42 

31.47 

53.28 

31.70 

62 

63 

54.56 

31.50 

54.42 

31.74 

54.28 

31.97 

54.14 

32.21 

63 

64 

55.43 

32.00 

55.29 

.32.24 

55.14 

32.48 

55.00 

32.72 

64 

65 

56.29 

32.50 

56.15 

32.75 

56.01 

32.99 

55.86 

33.23 

65 

66 

57.16 

33.00 

57.01 

33.25 

.56.87 

33.50 

56.72 

33.75 

66 

67 

58.02 

33.50 

57.88 

33.75 

.^7.73 

34.01 

57.58 

34.26 

67 

68 

58.89 

34.00 i 

58.74 

34.26 

58.59 

34.51 

.58.44 

34.77 

68 

69 

59.76 

34.50 

59.60 

34.76 

59.45 

35.02 

59.30 

35.28 

69 

70 

71 

60.62 

35.00  1 

60.47 

35.26 

60.31 

35.53 

60.16 

35.79 

70 

61.49 

35.50 

61.33 

35.77 

61.18 

36.04  1 

61.02 

36.30 

71 

72 

62.35 

36.00 

62.20 

36.27 

62.04 

.36.54 

61.88 

36.81 

72 

73 

63.22 

36.50 

63.06 

36.78 

62.90 

37.05 

62.74 

37.32 

73 

74 

64.09 

37.00 

63.92 

37.28 

63.76 

37.56 

63.60 

37.84 

74 

75 

64.95 

37.. 50 

64.79 

37.78 

64.62 

38.07 

64.46 

38.35 

75 

76 

65.82 

38.00 

65.65 

38.29 

65.48 

38.57 

65.31 

38.86 

76 

77 

66.68 

38.. 50 

66.52 

38.79 

66.35 

39.08 

66.17 

39.37 

77 

78 

67.55 

39.00 

67.38 

39.29 

67.21 

39.59 

67.03 

39.88 

78 

79 

68.42 

39.50 

68.24 

39.80 

68.07 

40.10 

67.89 

40.39 

79 

80 
81 

69.28 

40.00 

69.11 

40.30  1 

68.93 

40.60 

68.75 

40.90 
41.41 

80 
81 

70.15 

40.50 

69.97 

40.81 

69.79 

41.11 

69.61 

82 

71.01 

41.00 

70.83 

41.31 

70.65 

41.62 

70.47 

41.93 

82 

83 

71.88 

41.50 

71.70 

41.81 

71.52 

42.13 

71.33 

42.44 

83 

84 

72.75 

42.00 

72.56 

42.32 

72.38 

42.63 

72.19 

42.95 

84 

85 

73.61 

42.50 

73.43 

42.82 

73.24 

43.14 

73.05 

43.46 

85 

86 

74.48 

43.00 

74.29 

43.32  1 

74.10 

43.65 

73.91 

43.97 

86 

87 

75.34 

43.50 

75.15 

43.83  ! 

74.96 

44.16 

74.77 

44.48 

87 

88 

76.21 

44.00 

76.02 

44.33  ' 

75.82 

44.66 

75.63 

44.99 

88 

89 

77.08 

44.50 

76.88 

44.84 

76.68 

45.17 

76.49 

45.51 

89 

90 
91 

77.94 

45.00 

77.75 

45.34 

77.55 

45.68 

77.35 

46.02 

90 

78.81 

45.50 

78.61 

45.84 

78.41 

46.19 

78.21 

46.53 

91 

92 

79.67 

46.00 

79.47 

48.35 

79.27 

46.69 

79.07 

47.04 

92 

93 

80.54 

46.50 

80.34 

46.85 

80.13 

47.20 

79.92 

47.55 

93 

94 

81,41 

47.00 

81.20 

47.35 

80.99 

47.71 

80.78 

48.06 

94 

95 

82.27 

47.50 

82.06 

47.86 

81.85 

48.22 

81.64 

48.57 

95 

96 

83.14 

48.00 

82.93 

48.36     82.72 

48.72 

82.50 

49.08 

96 

97 

84.00 

48.50 

83.79 

48.87     83.58 

49.23 

83.36 

49.60 

97 

98 

84.87 

49.00 

84.66 

49.37     84.44 

49.74 

84.22 

50.11 

98 

99 

85.74 

49.50 

85.52 

49.87     85.30 

50.25 

85.08 

50.62 

99 

100 

§ 

c 

to 

86.60 

50.00 

86.38 

50.38     86.16 

50.75 

85.94 

51.13 

100 

Dep. 

Lat. 

Dep. 

Lat.      Dep. 

Lat. 

Dep. 

Lat. 

c 

(5 

60  Deg. 

59|  Deg.            69i  Deg. 

59i  Deg. 

64 


TRAVERSE   TABLE. 


g 
s 

31  Deg. 

1 

31i  Dog. 

3U  Deg. 

311  Deg. 

5 
1 

s 
s 

Lai. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

1 

0.86 

0.51 

0.85 

0.52 

0.85 

0.52 

0.85 

0..53 

2 

1.71 

1.03 

1.71 

1.04 

1.71 

1.04 

1.70 

1.05 

2 

3 

2.  .57 

1..55 

2.56 

1..56 

2.56 

1.57 

2.55 

1.58 

3 

4 

3.43 

2.06 

3.42 

2.08 

3.41 

2.09 

3.40 

2.10 

4 

5 

4.29 

2.58 

4.27 

2.59 

4.26 

2.61 

4.25 

2.63 

5 

6 

5.14 

3.09 

5.13 

3.11 

5.12 

3.13 

5.10 

3.16 

6 

7 

6.00 

3.61 

5.98 

3.63 

5.97 

3.66 

5.95 

3.68 

7 

8 

6.86 

4.12 

6.84 

4.15 

6.82 

4.18 

6.80 

4.21 

8 

9 

7.71 

4.64 

7.09 

4.67 

7.67 

4.70 

7.65 

4.74 

9 

10 

8.57 

5.15 

8.55 

5.19 

8.. 53 

5.22 

8.50 

5.26 

10 

11 

9.43 

5.67 

9. 40 

5.71 

9.38 

5.75 

9.35 

5.79 

11 

12 

10.29 

6.18 

10.26 

6.23 

10.23 

6.27 

10.20 

6.31 

12 

13 

11.14 

6.70 

11.11 

6.74 

11.08 

6.79 

11.05 

6.84 

13 

14 

12.00 

7.21 

11.97 

7.26 

11.94 

7.31 

11.90 

7.37 

14 

15    12.86 

7.73 

12.82 

7.78 

12.79 

7.84 

12.76 

7.89 

15 

16 

13.71 

8.24 

13.68 

8.30 

13.64 

8.36 

13.61 

8.42 

16 

17 

14.57 

8.76 

14.53 

8.82 

14.49 

8.88 

14.46 

8.95 

17 

18 

15.43 

9.27 

15.39 

9.34 

15.35 

9.40 

15.31 

9.47 

18 

19 

16.29 

9.79 

16.24 

9.86 

16.20 

9.93 

16.16 

10.00 

19 

20 

17.14 

10.30 

17.10 

10.38 

17.05 

10.45 

17.01 

10.. 52 

20 

21 

18.00 

10.82 

17.95 

10.89 

17.91 

10.97 

17.86 

11.05 

21 

22 

18.86 

11.33 

18.81 

11.41 

18.76 

11.49 

18.71 

11.58 

22 

23 

19.71 

11.85 

19.66 

11.93 

19.61 

12.02 

19.56 

12.10 

23 

24 

20.57 

12.36 

20.52 

12.45 

20.46 

12.54 

20.41 

12.63 

24 

25 

21.43 

12.88 

21.37 

12.97 

21.32 

13.06 

|21.26 

13.16 

25 

26 

22.29 

13.39 

22.23 

13.49 

22.17 

13.. 58 

l22.ll 

13.68 

26 

27 

23.14 

13.91 

23.08 

14.01 

23.02 

14.11 

i22.96 

14.21 

27 

28 

24.00 

14.42 

23.94 

14.53 

23.87 

14.63 

23.81 

14.73 

28 

29 

24.86 

14.94 

24.79 

15.04 

24.73 

15.15 

24.66 

15.26 

29 

30 

2'5.71 

15.45 

25.65 

15.. 50 

25.58 

15.67 

25.51 

15.79 

30 

31 

26.57 

15.97 

26.50 

16.08 

26.43 

16.20 

26.36 

16.31 

31 

32 

27.43 

16.48 

27.36 

16.60 

27.28 

16.72 

27.21 

16.84 

32 

33 

28.29 

17.00 

28.21 

17.12 

28.14 

17.24 

28.06 

17.37 

33 

34 

29.14 

17.51 

29.07 

17.64 

23.99 

17.76 

28.91 

17.89 

3-1 

35 

30.00 

18.03 

29.92 

18.16 

29.84 

18.29 

29.76 

18.42 

35 

36 

30.86 

18.. 54 

30.78 

18.68 

30.70 

18.81 

30.61 

18.94 

36 

37 

31.72 

19.06 

31.63'  19.19 

31.55 

19.33 

31.46 

19.47 

37 

38 

32.57 

19.57 

32.49 

19.71 

32.40 

19.85 

32.31 

20.00 

33 

39 

33.43 

20.09 

33.34 

20.23 

33.25 

20.38 

33.16 

20.52 

39 

40 

34.29 

20.60 

34.20 

20.75 

34.11 

20.90 

34.01 

21.05 

40 

41 

35.14 

21.12 

35.05 

21.27 

34.96 

21.42 

34.86 

21.57 

41 

42 

36.00 

21.63 

35.91 

21.79 

35.81 

21.94 

35.71 

22.10 

42 

43 

36.86 

22.15 

36.76 

22.31 

36.66 

22.47 

36.57 

22.63 

43 

44 

37.72 

22,66 

37.62 

22.83 

37.. 52 

22.99 

37.42 

23.15 

44 

45 

38.57 

23.18 

i 38.47 

23.34 

38.37 

23.51 

38.27 

23.63 

45 

46 

39.43 

23.69 

39.33 

23.86 

39.22 

24.03 

39.12 

24.21 

46 

47 

40.29 

24.21 

40.18 

24.38 

40.07 

24.. 56 

39.97 

24.73 

47 

48 

41.14 

24.72 

41.04 

24.90 

40.93 

25.08 

40.82 

25 .  26 

48 

49 

42.00 

25.24 

41.89 

25.42 

41.78 

25.60 

41.67 

25.78 

49 

50^ 

42.86 

25.75 

42.75 

25.94 

42.63 

26.12 

42.52 

26.31 

50 

6 
a 

a 

1 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

59 

Deg. 

58|  Deg. 

58^ 

Deg. 

58i  Deg. 

1 

TBAVERSE    TABLE 


65 


1 

9 
61 

31  Deg. 

3U  Deg. 

311  Deg. 

3U  Deg. 

0 
~5T 

Lat. 

Dcp. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

43.72 

26.27 

43.60 

26.46 

43.48 

26.65 

43.37 

26.84 

52 

44.57 

26.78 

44.46 

26.98 

44.34 

27.17 

44.22 

27.36 

52 

53 

45.43 

27.30 

45.31 

27.49 

45.19 

27.69 

45.07 

27.89 

53 

54 

46.29 

27.81 

46.17 

28.01 

46.04 

28.21 

45.92 

28.42 

64 

55 

47.14 

28.33 

47.02 

28.63 

46.90 

28.74 

46.77 

28.94 

55 

56 

4S.00 

28.84 

47.88 

29.05 

47.76 

29.26 

47.62 

29.47 

66 

67 

48.86 

29.36 

48.73 

29.67 

48.60 

29.78 

48.47 

29.99 

67 

58 

49 .  72 

29.87 

49.58 

30.09 

49.45 

.30.30 

49.32 

30.. 52 

58 

59 

50.57 

30.39 

50.44 

30.61 

50.31 

30.83 

.50.17 

31.05 

59 

60 
61 

51.43    30.90  1 

51.29 

31.13 

51.16 

31.35 

51.02 

31.57 
32.10 

60 
61 

52.29    31.42 

.52.15 

31.66 

52.01 

31.87i 

51.87 

62 

53.14 

31.93 

53.00 

32.16 

.52.86 

32.39 

52.72 

32.63 

62 

63 

54.00 

32.45 

53.86 

32.68 

53.72 

32.92 

.53.57 

33.15 

63 

64 

54.86 

32.96 

54.71 

.33.20 

64.57 

33.44 

64.42 

33.68 

64 

65 

55.72 

33.48 

55.57 

33.72 

55.42 

33.96 

55.27 

34.20 

65 

66 

56.57 

33.99 

66.42 

34.24 

.56.27 

34.48 

56.12 

.34.73 

66 

67 

57.43 

34.51 

57.28 

34.76 

57.13 

35.01 

56.98 

35.26 

67 

68 

58.29 

35.02 

58.13 

36.28 

67.98 

35.63 

57.82 

35.78 

68 

69 

59.14 

35.54 

58.99 

35.80 

58.83 

36.05 

58.67 

36.31 

69 

70 
71 

60.00 

36.05 

59.84 

36.31 

59.68 

36.57 

59.52 
60.37 

36.83 
37.36 

70 

71 

60.86 

36.57 i 

60.70 

36.83  1 

60.54 

37.10 

72 

01.72 

37.08 j 

61.55 

37.35 

61.39 

37.62 1 

61.23 

37.89 

72 

73 

62.57 

37.60  1 

62.41 

37.87 

62 .  24 

38.14  1 

62.08 

38.41 

73 

74 

63.43 

38.111 

63.26 

38.89 

63.10 

38.66] 

62.93 

38.94 

74 

75 

64.29 

38.63! 

64.12 

38.91 

63.95 

39.191 

63.78 

39.47 

75 

76 

65.14 

39.14; 

64.97 

39.43 

64.80 

39.71 

64.63 

39.99 

76 

77 

66.00 

39.66 

65.83 

39.95 

65.65 

40.23 

65.48 

40.. 52 

77 

78 

06.86 

40.17 

66.68 

40.46 

66.51 

40.75 

66.33 

41.04 

78 

79 

07.72 

40.69 

67.54 

40.98 

67.36 

41.28 

07.18 

41. .57 

79 

80 
81 

68.. 57 

41.20 

68.39 

41. .50 

68.21 

41.80 

38.03 

42.10 

80 
81 

69.43  Ul. 72' 

69.25 

42.02 

69.06 

42.32 

68.88 

42.62 

82 

70.29    42.23  1 

70.10 

42.54 

69.92 

42.84 

69.73 

43.15 

82 

83 

71.14 

42.75 

70.96 

43.06 

70.77 

43.37 

70.58 

43.68 

83 

84 

72.00 

43.26 

71.81 

43.58 

71.62 

43.39 

71.43 

44.20 

84 

85 

72.86 

43 .  78 

•72.67 

44.10 

72.47 

44.41 

72.28 

44.73 

85 

86 

73.72 

44.29 

73.52 

44.61 

73.33 

44.93 

73.13 

45.25 

86 

87 

74.57 

44.81 

74.38 

45.13 

74.18 

46.46 

73.98 

45.78 

87 

88 

75.43 

45.32 

75.23 

46.65 

75.03 

45.98 

74.83 

46.31 

88 

89 

76.29 

45.84 

76.09 

46.17 

75.88 

46.. 50 

75.68 

46.83 

89 

90 
91 

77.15 

46.35 

76.94 

46.69 

76 .  74 

47.02 

76. 5Z 

47.36 

90 
91 

78.00 

46.87 

77.80 

47.21 

77.59 

47.65 

77.38 

47.89 

92 

78.86 

47.38 

78.65 

47.73 

78.44 

48.07 

78.23 

48.41 

92 

93 

79.72 

47.90 

79.51 

48.25 

79.30 

48.59 

79.08 

48.94 

93 

94 

80.. 57 

48.41 

80.36 

48.76 

80.15 

49.11 

79.93 

49.47 

94 

95 

81.43 

48.93 

81.22 

49.28 

81.00 

49.64 

80.78 

49.99 

95 

96 

82.29 

49.44 

82.07 

49.80 

81.86 

50.16 

81.63 

50.62 

96 

97 

83.15 

49.96 

82.93 

50.32 

82.71 

50.68 

82.48 

51.04 

97 

98 

84.00 150.47 

83.78 

50.84 

83.56 

51.20 

83.33 

51.57 

98 

99 

84.86  1.50.99 

84.64 

51.36 

84.41 

51.73 

84.18 

52.10 

99 

100 

o 

C 

85.72  151.50 

85.49 

61.88 

85.26 

52.25 

85.04 

52.62 

100 

0 
0 

c 

s 

"cc 

5 
! 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

59  De^. 

58|  Deg. 

5^  Deg. 

58i 

Deg. 

66 


TKAVERSE    TABLE. 


o 

o 
a 

32  Deg. 

32i  Deg. 

32i  Deg. 

321  Deg. 

0 

i 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

1 

0.85 

0.53 

0.85 

0.53 

0.84 

0.54 

0.84 

0.54 

1 

2 

1.70 

1.06 

1.69 

1.07 

1.09 

1.07 

1.68 

1.08 

2 

3 

2.54 

1.59 

2.54 

1.60 

2.53 

1.61 

2.52 

1.62 

3 

4 

3.39 

2.12 

3.38 

2.13 

3.37 

2.15 

3.36 

2.16 

4 

5 

4.24 

2.65 

4.23 

2.67 

4.22 

2.69 

4.21 

2.70 

5 

6 

5.09 

3.18 

5.07 

3.20 

5.06 

3.22 

5.05 

3.25 

6 

7 

5.94 

3.71 

5.92 

3.74 

5.90 

3.76 

5.89 

3.79 

7 

8 

6.78 

4.24 

6.77 

4.27 

6.75 

4.30 

6.73 

4.33 

8 

9 

7.63 

4.77 

7.61 

4.80 

7.59 

4.84 

7.57 

4.87 

9 

10 
11 

8.48 

5.30 

1    8.46 

5.34 

8.43 

5.37 

8.41 

5.41 

10 

9.33 

5.83 

9.30 

5.87 

9.28 

5.91 

9.25 

5.95 

11 

12 

10.18 

6.36 

10.15 

6.40 

10.12 

6.45 

10.09 

6.49 

12 

1^ 

11.02 

6.89 

10.99 

6.94 

10.96 

6.98 

10.93 

7.03 

13 

14 

11.87 

7.42 

11.84 

7.47 

11.81 

7.52 

11.77 

7.57 

14 

15 

12.72 

7.95 

12.69 

8.00 

12.65 

8.06 

! 12.62 

8.11 

15 

16 

13.57 

8.48 

13.53 

8.54 

13.49 

8.60 

13.46 

8.66 

16 

17 

14.42 

9.01 

14.38 

9.07 

14.34 

9.13 

14.30 

9.20 

17 

18 

15.26 

9.54 

15.22 

9.61 

15.18 

9.67 

15.14 

9.74 

18 

19 

16.11 

10.07 

16.07 

10.14 

10.02 

10.21 

15.98 

10.28 

19 

20 

16.96 

10.60 

16.91 
17.76 

10.67 

16.87 

10.75 

16.82 

10.82 

20 

21 

17.81 

11.13 

11.21 

17.71 

11.28 

17.66 

11.36 

21 

22 

18.66 

11.66 

18.61 

11.74 

18.55 

11.82 

18.50 

11.90 

22 

23 

19.51 

12.19 

19.45 

12.27 

19.40 

12.36 

19.34 

12.44 

23 

24 

20.35 

12.72 

20.30 

12.81 

20.24 

12.90 

20.18 

12.98 

21 

25 

21.20 

13.25 

21.14 

13.34 

21.08 

13.43 

21.03 

13.52 

25 

26 

22.05 

13.78 

21.99 

13.87 

21.93 

13.97 

21.87 

14.07 

26 

27 

22.90 

14.31 

22.83 

14.41 

22.77 

14.51 

22  71 

14.61 

27 

28 

23.75 

14.84 

23.68 

14.94 

23.61 

15.04 

23.55 

15.15 

28 

29 

24.59 

15.37 

24.53 

15.47 

24.46 

15.58 

24.. 39 

15.69 

29 

30 

25.44 

15.90 

25.37 

16.01 

25.30 

16.12 

25.2.'^ 

16.23 

30 

31 

26.29 

16.43 

26.22 

16.54 

26.15 

16.66 

26.07 

16.77 

31 

32 

27.14 

16.96 

27.06 

17.08 

26.99 

17.19 

26.91 

17.31 

32 

33 

27.99 

17.49 

27.91 

17.61 

27.83 

17.73 

27.75 

17.85 

33 

34 

28.83 

18.02 

28.75 

18.14 

28.68 

18.27 

28.60 

18.39 

34 

35 

29.68 

18.55 

29.60 

18.68 

29.52 

18.81 

29.44 

18.93 

35 

36 

30.53 

19.08 

30.45 

19.21 

30.36 

19.34 

30.28 

19.48 

36 

37 

31.38 

19.61 

31.29 

19.74 

31.21 

19.88 

31.12 

20.02 

37 

38 

32.23 

20.14 

32.14 

20.28 

32.05 

20.42 

31.96 

20.56 

38 

39 

33.07 

20.67 

32.98 

20.81 

32.89 

20.95 

32.80 

21.10 

39 

40 

33.92 

21.20 

33.83 

21.34 

33.74 

21.49 

33.64 

21.64 

40 
41 

41 

34.77 

21.73 

34.67 

21.88 

34.58 

22.03 

34.48 

22.18 

42 

35.62 

22.26 

35.52 

22.41 

35.42 

22.57 

35.32 

22.72 

42 

43 

36.47 

22.79 

36.37 

22.95 

36.27 

23.10 

.36.16 

23.26 

43 

44 

37.31 

23.32 

37.21 

23.48 

37.11 

23.64 

37.01 

23.80 

44 

45 

38.16 

23.85 

38.06 

24.01 

37.95 

24.18 

37.85 

24.-34 

45 

46 

39.01 

24.38 

38.90 

24.55 

38.80 

24.72 

38.69 

24.88 

46 

47 

39.86 

24.91 

39.75 

25.08 

39.64 

25.25 

39.53 

25.43 

47 

48 

40.71 

25.44 

40.59 

25.61 

40.48 

25.79 

40.37 

25.97 

48 

49 

41.55 

25.97 

41.44 

26.15 

41.33 

26.33 

41.21 

26.51 

49 

50 

42.40 

26.50 

42.29 

26.68 

42.17 

26.86 

42.05 

27.05 

50 

.2 

Q 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

6 

c 

d 
0 

58  Deg. 

57|  Deg. 

67iDeg. 

571  I 

)eg. 

TRAVERSE   TABLE. 


67 


32  Deg. 

32i  Deg. 

II 

i 
32i  Deg.      1 

321  Deg. 

f 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat.  1 

Dep. 

"51 

43.25 

27.03 

43.13 

27.21 

43".  of 

27.40 

42.89 

27.. 59 

■"51 

52 

44.10 

27.56 

43.98 

27.75 

43.86 

27.94! 

43.73 

28.13 

52 

53 

4-1.95 

28.09 

44.82 

28.28 

44.70 

28.48  1 

44.58 

28.67 

53 

54 

45.79 

28.62 

45.67 

28.82 

45.54 

29.01 

45.42 

29.21 

54 

55 

46.64 

29.15 

46.51 

29,35 

46.. 39 

29.55 

46.26 

29.75 

55 

56 

47.49 

29.68 

47.36 

29.88 

47.23 

30.09 

47.10 

30.29 

56 

57 

48.34 

30.21 

48.21 

30.42 

48.07 

30.63 

47.94 

30.84 

57 

58 

49.19 

30.74 

49.05 

30.95 

48.92 

31.16 

48.78 

31.38 

58 

59 

50.03 

31.27 

49.90 

31.48 

49.76 

31.70 

49.62 

31.92 

59 

60 
61 

50.88 

31.80 

50.74 

32.02 

50.60 
51.45 

32.24 

32.78 

50.46 

32.46 

60 
61 

51.73 

32.. 33 

51.59 

32.55 

51.30 

33.00 

62 

52.58 

32.85 

52.44 

33.08 

52.29 

33.31 

52.14 

33.54 

62 

63 

53.43 

33.38 

53.28 

33.62 

53.13 

33.85 

52.99 

34.08 

63 

64 

54.28 

33.91 

54.13 

34.15 

53.98 

34.39 

.53.83 

34.62 

64 

65 

55.12 

34.44 

54.97 

34.68 

.54.82 

34.92 

54.67 

35.16 

65 

60 

55.97 

34.97 

55.82 

35.22 

55.66 

35.46 

55.51 

35.70 

66 

67 

56.82 

35.50; 

56.66 

35.75 

56.51 

36.00 

56.35 

36.25 

67 

68 

57.67 

36.03  1 

57.51 

36.29 

57.35 

^.54 

57.19 

36.79 

68 

69 

58.52 

36.56 

58.36 

36.82 

58.19 

37.07 

.58.03 

37.33 

69 

70 
"71 

59.36 

37.09 

59.20 

37.35 

59.04 

37.61 

58.87 

37.87 

70 
71 

60.21 

37.62' 

60.05 

37.89 

59.88 

38.15 

59.71 

38.41 

72 

61.06 

38.15  1 

60.89 

38.42 

60.72 

38.69 

60.55 

38.95 

72 

73 

61.91 

38.68 

61.74 

38.95 

61.57 

39.22 

61.40 

39.49 

73 

74 

62.76 

39.21 

62.58 

39.49 

62.41 

39.76 

62.24 

40.03 

74 

75 

63.60 

39.74 

63.43 

40.02 

63.25 

40.30 

'63.08 

40.57 

75 

76 

64.45 

40.27 

64.28 

40.55 

64.10 

40.83 

163.92 

41.11 

76 

77 

65.30 

40.80 

65.12 

41.09 

64.94 

41.37 

64.76 

41.65 

77 

78 

66.15 

41.33 

65.97 

41.62 

65.78 

41.91 

65.60 

42.20 

78 

79 

67.00 

41.86 

66.81 

42.16 

66.63 

42.45 

66.44 

42.74 

79 

80 

67.84 

42.39 

67.66 

42.69 

67.47 

42.98 

67.28 

43.28 

80 

81 

68.69 

42.92 

68.50 

43.22 

68.31 

43.52 

68.12 

43.82 

81 

82 

69.. 54 

43.45 

69.35 

43.76 

69.16 

44.06 

68.97 

44.30 

82 

83 

70.39 

43.98 

70.20 

44.29 

70.00 

44.60 

69.81 

44.90 

83 

84    71.24 

44.51 

71.04 

44.82 

70.84 

45.13 

70.65 

45.44 

84 

85    72.08 

45.04 

71.89 

45.36 

71.69 

45.67 

171.49 

45.98 

85 

86    72.93 

45.57 

72.73 

45.89 

72.53 

46.21 

72.33 

46.52 

86 

87  173.78 

46.10 

73.58 

46.42 

73.38 

46.75 

73.17 

47.06 

87 

88 

74.63 

46.63 

74.42 

40.96 

74.22 

47.28 

174.01 

47.61 

88 

89 

75.48 

47.16 

75.27 

47.49 

75.06 

47.82 

174.85 

48.15 

89 

90 
91 

76.32 

47.69 

76.12 

48.03 

75.91 

48.36 

[75.69 
76.53 

48.69 

90 
91 

77.17 

48.22 

76.96 

48.56 

76.75 

48.89 

49.23 

92 

78.02 

48.75 

77.81 

49.09 

77.59 

49.43 

77.38 

49  77 

92 

93 

78.87 

49.28 

78.65 

49.63 

78.44 

49.97 

78.22 

.50.31 

93 

94 

79.72 

49.81 

79.50 

50.16 

79.28 

50.51 

79.06 

50.85 

94 

95 

80.56 

50.34 

80.34 

.50.69 

80.12 

51.04 

79.90 

51.39 

95 

96 

81.41 

50.87 

81.19 

51.23 

80.97 

51.58 

80.74 

51.93 

96 

97 

82.26 

51.40 

82.04 

51.70 

81.81 

52.12 

81.58 

.52.47 

97 

98 

83.11 

51.93 

82.88 

52.29 

82.65 

52.66 

82.42 

53.02 

98 

99 

83.96 

.52.46 

83.73 

52.83 

83.50 

53.19 

183.26 

53.56 

99 

100 

84.80 

52.99 

84.57 

53.36 
Lat. 

84.34 

53.73 

84.10 

54.10 

100 

C 

Dep. 

Lat. 

Dep. 

Dep. 

Lat. 

Dep. 

Lat. 

1       68  Deg. 

571  De^. 

It 

57^  Deg 

57i  Deg. 

68 


TRAVERSE    TABLE. 


""""■ 

—— • 

5 

33  Deg. 

33^  Deg. 

33i  Deg. 

33  i  Deg.         O 

3 

n 

Lat. 

Dep. 

Lat. 

Dep. 



Lat. 

Dep. 

Lat. 

Dep. 

5 

o 

(6 
1 

0.84 

0.54 

0.84 

0.55 

0.83 

0.55 

0.83 

0.56 

2 

1.68 

1.09 

1.67 

1. 10 

1.67 

1.10 

1.60 

1.11 

2 

3 

2.52 

1.63 

2.51 

1.64 

2.50 

1.66 

2.49 

1.67 

3 

4 

3.35 

2.18 

3.35 

2.19 

3.34 

2.21 

3.33 

2.22 

4 

5 

4.19 

2.72 

4.18 

2.74 

4.17 

2.76 

4.16 

2.78 

5 

6 

5.03 

3.27 

5.02 

3.29 

5.00 

3.31 

4.99 

3.33 

6 

7 

5.87 

3.81 

5.85 

3.84 

5.84 

3.86 

5.82 

3.89 

7 

8 

6.71 

4.36 

6.69 

4.39 

6.67 

4.42 

6.65 

4.44 

8 

9 

7.. 55 

4.90 

7.. 53 

4.93 

7.50 

4.97 

7.48 

5.00 

9 

10 

8.39 

5.45 

8.36 
9.20 

5.48 
6.03 

8.. 34 
9.17 

5.52 

8.31 

5.56 

10 

11 

9.23 

5.99 

6.07 

9.15 

6.11 

11 

12 

10.06 

6.54 

10.04 

6.58 

10.01 

6.62 

9.98 

6.67 

12 

13 

10.90 

7.08 

10.87 

7.13 

10.84 

7.18 

10.81 

7.22 

13 

14 

11.74 

7.62 

11.71 

7.68 

11.67 

7.73 

11.64 

7.78 

14 

1.) 

12.58 

8.17 

12.54 

8.22 

12.51 

8.28 

12.47 

8.33 

15 

16 

13.42 

8.71 

13.38 

8.77 

13.34 

8.83 

13.30 

8.89 

16 

17 

14.26 

9.20 

14.22 

9.32 

14.18 

9.38 

14.13 

9.44 

17 

18 

15.10 

9.80 

15.05 

9.87 

15.01 

9.93 

14.97 

10.00 

18 

19 

15.93 

10.35 

15.89 

10.42 

15.84 

10.49 

15.80 

10.56 

19 

20 

16.77 

10.89 

16.73 

10.97 

16.68 

11.04 

16.63 

11.11 

20 

21 

17.61 

11.44 

17.56 

11.51 

17.51 

11. .59 

17.46 

11.67 

21 

22 

18.45 

11.98 

18.40 

12.06 

)8.35 

12.14 

18.29 

12.22 

22 

23 

19.29 

12.53 

19.23 

12.61 

19.18 

12.69 

19.12 

12.78 

23 

24 

20.13 

13.07 

20.07 

13.16 

20.01 

13.25 

19.96 

13.33 

24 

25 

20.97 

13.62 

20.91 

13.71 

20.85 

13.80 

20.79 

13.89 

25 

26 

21.81 

14.16 

21.74 

14.26 

21.68 

14.35 

21.62 

14.44 

26 

27 

22.64 

14.71 

22.58 

14.80 

22.51 

14.90 

22.45 

15.00 

27 

2S 

23.48 

15.25 

23.42 

15.35 

23.35 

15.45 

23.28 

15.56 

28 

29 

24.. 32 

15.79 

24.25 

15.90 

24.18 

16.01 

24.11 

16.11 

29 

30 
31 

25.16 

16.34 

25.09 

16.45 

25.02 

16.56 

24.94 

16.67 

30 

26.00 

16.88 

25.92 

17.00 

25.85 

17.11 

25.78 

17.22     31  \ 

32 

26.84 

17.43 

26.76 

17.55 

26.68 

17.66 

26.61 

17.78 

32 

33 

27.68 

17.97 

27.60 

18.09 

27.52 

18.21 

27.44 

18.33 

33 

34 

28.51 

18.52 

28.43 

18.64 

28.35 

18.77 

28.27 

18.89 

34 

35 

29.35 

19.06 

29.27 

19.19 

29.19 

19.32 

29.10 

19.44 

35 

36 

30.19 

19.61 

30.11 

19.74 

30.02 

19.87 

29.93 

20.00 

36 

37 

31.03 

20.15 

30.94 

20.29 

30.85 

20.42 

.30.76 

20.. 56 

37 

3S 

31.87 

20.70 

31.78 

20.84 

31.69 

20.97 

31.60 

21.11 

38 

39    32  71  1 

21.24 

32.62 

21.. 38 

32.52 

21.53 

32.43 

21.67 

39 

40 
41 

33.. 55 
34.39 

21.79 

33.45 
34.29 

21.93 

22.48 

33.. 36 
34.19 

22.08 

33.26 

22.22 

40 
41 

22.33 

22.63 

34.09 

22.78 

42 

35.22 

22.87 

35.12 

23.03 

35.02 

23.18 

34.92 

23.33 

42 

43 

36.06 

23.42 

35.96 

23.58 

35.86 

23.73 

35.75 

23.89 

43 

44 

36.90 

23.96 

36.80 

24.12 

36.69 

24.29 

.36.58 

24.45 

44 

45 

37.74 

24.51 

37.63 

24.67 

37.52 

24.84 

37.42 

25  00 

45 

46 

38.58 

25.05 

38.47 

25.22 

38.36 

25.39 

38.25 

25.56 

46 

47 

39.42 

25.60 

39.31 

25.77 

.39.19 

25.94 

39.08 

26.11 

47 

48 

40 .  28 

26.14 

40.14 

26.32 

40.03 

26.49 

39.91 

26 .  67 

48 

49 

41.09 

26.69 

40.98 

26.87 

40.86 

27.04 

40.74 

27.22 

49 

50 

o 

.2 

Q 

41.93 

27.23 

41.81 

27.41 

41.69 

27.60 

41.57 

27.78 

50 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

6 
o 

c 

s 

57  Deg. 

56|  Deg. 

56i  Deg. 

56  i  Deg. 

TRAVERSE    TABLE. 


69 


s 
s 

? 

51 

33  Deg. 

33i  Deg. 

33^  Deg. 

33i  Deg. 

g 

61 

Lat. 

Dep. 

Lat.       Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

42.77 

27.78 

42.65 

27.98 

42.53 

28.15 

42.40 

28.33 

52 

43.61 

28.32 

43.49 

28.51 

43.36 

28.70 

43.24 

28.89 

52 

53 

44.45 

28.87 

44.32 

29.06 

44.20 

29.25 

44.07 

29.45 

53 

54 

45.29 

29.41 

45.16 

29.61 

45.03 

29.80 

44.90 

30.00 

64 

55 

46.13 

29.96 

46.00 

30.16 

45.86 

30.36 

45.73 

30.66 

65 

56 

46.97 

30.50 

46.83 

30.70 

46.70 

30.91 

46.56 

31.11 

66 

67 

47.80 

31.04 

47.07 

31.25 

47.53 

31.46 

47.39 

31.67 

67 

58 

48.64 

31.59 

48.50 

31.80 

48.37 

32.01 

48.23 

32.22 

68 

59 

49.48 

32.13 

49.34 

32.35 

49.20 

32.56 

49.06 

32.78 

69 

60 
61 

50.32 

32.68 

50.18 

32.90 

50,03 

33.12 

49.89 

33.33 

60 
61 

51.16 

33.22 

51.01 

33.45 

50.87 

33.67 

50.72 

33.89 

62 

52.00 

33.77 

51.85 

33.99 

51.70 

34.22 

51.55 

34.45 

62 

63 

52.84 

34.31 

52.69 

34.54 

52.53 

34.77 

52.38 

35.00 

63 

64 

53.67 

34.86 

53.52 

35.09 

53.37 

35.32 

53.21 

35.66 

64 

65 

54.51 

35.40 

54.36 

.35.64 

54.20 

35.88 

54.05 

36.11 

65 

66 

55.. 35 

35.95 

55.19 

36.19 

55.04 

36.43 

54.88 

36.67 

66 

67 

56.19 

36.49 

56.03 

36.74 

55.87 

36.98 

55.71 

37.22 

67 

68 

57.03 

37.04 

56.87 

37.28 

56.70 

37.53 

56.54 

37.78 

68 

69 

57.87 

37.58 

57.70 

37.83 

57.54 

38.08 

57.37 

38.33 

69 

70 
71 

58.71 

38.12 

.58.54 

38.38 

68.37 

38.64 

58.20 

38.89 
39.45 

70 

71 

59.55 

38.67 

59.. 38 

38.93 

59.21 

39.19 

.59.03 

72 

00.38 

39.21 

60.21 

39.48 

60.04 

39.74 

.59.87 

40.00 

72 

73 

61.22 

39.76 

61.05 

40.03 

60.87 

40.29 

60.70 

40.56 

73 

74 

62.06 

40.30 

61.89 

40.57 

61.71 

40.84 

61.53 

41.11 

74 

75 

62.90 

40.85 

62.72 

41.12 

62.. 54 

41.40 

62.. 36 

41.67 

75 

76 

63.74 

41.39 

63.56 

41.67 

63.38 

41.95 

63.19 

42.22 

76 

77 

64.58 

41.94 

64.39 

42.22 

64.21 

42.. 50 

64.02 

42.78 

77 

78 

65.42 

42.48 

65.23 

42.77 

65.04 

43.05 

64.85 

43.33 

78 

79 

86.25 

43.03 

66.07 

43.32 

65.88 

43.60 

65.69 

43.89 

79 

80 
81 

67.09 
67.93 

43.57 

44.12 

66.90 

43.86 

66.71 

44.15 

66.52 

44.45 

80 

67.74 

44.41 

67.54 

44.71 

67.35 

45.00 

8l 

82 

68.77 

44.66 

68.58 

44.96 

68.38 

45.26 

68.18 

45.56 

82 

83 

69.61 

45.20 

69.41 

45.51 

69.21 

45.81 

69.01 

46.11 

83 

84 

70.45 

45.75 

70.25 

46.06 

70.05 

46.36 

69.84 

46.67 

84 

85 

71.29 

46.29 

71.08 

46.60 

70.88 

46.91 

70.67 

47.22 

86 

86 

72.13 

46.84 

71.92 

47.15 

71.71 

47.47 

71.51 

47.78 

86 

87 

72.96 

47.38 

72.76 

47.70 

72.55 

48.02 

72.34 

48.33 

87 

88 

73.80 

47.93 

73.59 

48.25 

73.38 

48.57 

73.17 

48.89 

88 

89 

74.64 

48.47 

74.43 

48.80 

74.22 

49.12 

74.00 

49.45 

89 

90 
91 

75.48 

49.02 

75.27 

49.35 

75.05 

49.67 

74.83 
75.66 

.50.00 

90 

76.32 

49.56 

76.10 

49.89 

75.88 

50.23 

50.56 

91 

92 

77.16 

.50.11 

76.94 

.50.44 

76.72 

60.78 

76.50 

61.11 

92 

93 

78.00 

50.65 

77.77 

50.99 

77.55 

51.33 

77.33 

51.67 

93 

94 

78.83 

51.20 

78.61 

51.54 

78.39 

51.88 

78.16 

52.22 

94 

95 

79.67 

51.74 

79.45 

52.09 

79.22 

52.43 

78.99 

62.78 

95 

96 

80.51 

52.29 

80.28 

52.64 

80.05 

52.99 

79.82 

63.33 

96 

97 

81.35 

52.83 

81.12 

.53.18 

80.89 

53.54 

80.65 

53.89 

97 

98 

82.19 

53.37 

81.96 

.53.73 

81.72 

54.09 

81.48 

54.45 

98 

99 

83.03 

53.92 

82.79 

54.28 

82.55 

54.64 

82.32 

65.00 

99 

^00 

83.87 

54.46 

83.63 

.54.83 

83.39 

55.19 

83.15 

.55.56 

100 

1 

CC 

5 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat, 

57  Deg. 

561  Deg. 

561  Deg. 

56i  Deg. 

1 

1 

..    ...„..1.,.J 

70 


TK AVERSE    TABLE. 


1 

34  Deg. 

34i  Deg. 

34^  Deg. 

341  Deg. 

1 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

"O.W 

Dep. 

Lat. 

Dep. 

1 

0.83 

0.56 

0.83 

0.56 

0.67 

0.82 

0.57 

1 

2 

1.66 

1.12 

1.65 

1.13 

1.65 

1.13 

1.64 

1.14 

2 

3 

2.49 

1.68 

2.48 

1.69 

2.47 

1.70 

2.46 

1.71 

3 

4 

3.32 

2.24 

3.31 

2.25 

3.30 

2.27 

3.29 

2.28 

4 

5 

4.15 

2.80 

4.13 

2.81 

4.12 

2.83 

4.11 

2.85 

5 

6 

4.97 

3.36 

4.96 

3.38 

4.94 

3.40 

4.93 

3.42 

6 

7 

5.80 

3.91 

6.79 

3.94 

5.77 

3.96 

5.75 

3.99 

7 

8 

6.63 

4.47 

6.61 

4.50 

6.59 

4.. 53 

6.57 

4.56 

8 

9 

7.46 

5.03 

7.44 

5.07 

7.42 

5.10 

7.39 

5.13 

9 

10 

8.29 

5.59 

8.27 

5.63 

8.24 

5.66  1 

8.22 

5.70 

10 
11 

11 

9.12 

6.15 

9.09 

6.19 

9.07 

6.23 

9.04 

6.27 

12 

9.95 

6.71 

9.92 

6.75 

9.89 

6.80 

9.86 

6.84 

12 

13 

10.78 

7.27 

10.75 

7.32 

10.71 

7.36 

10.68 

7.41 

13 

14 

11.61 

7.83 

11.57 

7.88 

11.54 

7.93 

11.50 

7.98 

14 

15 

12.44 

8.39 

12.40 

8.44 

12.36 

8.50 

12.32 

8.55 

15 

16 

13.26 

8.95 

13.23 

9.00 

13.19 

9.06 

13.15 

9.12 

16 

17 

14.09 

9.51 

14.05 

9.57 

14.01 

9.63 

13.97 

9.69 

17 

18 

14.92 

10.07 

14.88 

10.13 

14.83 

10.20 

14.79 

10.26 

18 

19 

15.75 

10.62 

15.71 

10.69 

15.66 

10.76 

15.61 

10.83 

19 

20 

16.58 

11.18 

16.53 

11.26 

16.48 

11.33 

16.43 

11.40 

20 

21 

17.41 

11.74 

17.36 

11.82 

17.31 

11.89 

17.25 

11.97 

21 

22 

18.24 

12.. 30 

18.18 

12.38 

18.13 

12.46 

18.08 

12.54 

22 

23 

19.07 

12.86 

19.01 

12.94 

18.95 

13.03 

18.90 

13.11 

23 

24 

19.90 

13.42 

19.84 

13.51 

19.78 

13.59 

19.72 

13.68 

24 

25 

20.73 

13.98 

20.66 

14.07 

20.60 

14.16 

20.54 

14.25 

25 

26 

21.55 

14.54 

21.49 

14.63 

21.43 

14.73 

21.36 

14.82 

26 

27 

22.38 

15.10 

22.32 

15.20 

22.25 

15.29 

22.18 

15.39 

27 

28 

23.2] 

15  66 

23.14 

15.76 

23.08 

15.86 

23.01 

15.96 

28 

29 

24.04 

16.22 

23.97 

16.32 

23.90 

16.43 

23.83 

16.53 

29 

30 

24.87 

16.78 

24.80 

16.88 

24.72 

16.99 

24.65 

17.10 

30 

31 

25.70 

17.33 

25.62 

17.45 

25.55 

17.56 

25.47 

17.67 

31 

32 

26.53 

17.89 

26.45 

18.01 

26.37 

18.12 

26.29 

18.24 

32 

33 

27.36 

18.45 

27.28 

18.. 57 

27.20 

18.69 

27.11 

18.81 

33 

34 

28.19 

19.01 

28.10 

19.14 

28.02 

19.26 

27.94 

19.38 

34 

35 

29.02 

19.57 

28.93 

19.70 

28.84 

19.82 

28.76 

19.95 

35 

36 

29.85 

20.13 

29.76 

20.26 

29.67 

20.39 

29.58 

20.52 

36 

37 

30.67 

20.69 

30.58 

20.82 

30.49 

20.96 

30.40 

21.09 

37 

38 

31.50 

21.25 

31.41 

21.39 

31.32 

21.52 

31.22 

21.66 

38 

39 

32.33 

21.81 

32.24 

21.95 

32.14 

22.09 

32.04 

22.23 

39 

40 

33.16 

22.37 

33.06 

22.51 

.32.97 

22.06 

32.87 

22.80 

40 

41 

33.99 

22.93 

33.89 

23.07 

33.79 

23.22 

33.69 

23.37 

41 

42 

34.82 

23.49 

34.72 

23.64 

34.61 

23.79 

34.51 

23.94 

42 

43 

35.65 

24.05 

35.54 

24.20 

35.44 

24.36 

36.33 

24.51 

43 

44 

36.48 

24.60 

36.37 

24.76 

36.26 

24.92 

36.15 

25.08 

44 

45 

37.31 

25.16 

37.20 

25.. 33 

37.09 

25.49 

36.97 

25.65 

45 

46 

38.14 

25.72 

38.02 

25.89 

37.91 

26.05 

37.80 

26.22 

46 

47 

38.96 

26.28 

38.85 

26.45 

38.73 

26.62 

38.  G2 

26.79 

47 

48 

39.79 

26.84 

39.68 

27.01 

39.56 

27.19 

39.44 

27.36 

48 

49 

40.62 

27.40 

40.50 

27.58 

40.38 

27.75 

40.26 

27.93 

49 

50 

41.45 

27.96 

41.33 

28.14 

41.21 
Dep. 

28.32 

41.08 

28.50 

50 

.2 
Q 

Dop. 

Lat. 

Dep. 

Lat. 

Lat. 

Dep. 

Lat. 

c 
Q 

56  Deg. 

551  Deg. 

55iDeg. 

5oi 

Deg. 

TRAVERSE    TABLE. 


71 


t 

.51 

34  Deg. 

34iDeg. 

34i  Deg. 

341  Deg. 

S 

"51 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 
42.03 

Dep.  ! 

Lat. 

Dep. 

42.28 

28.52 

42.16 

28.70 

28.89 

41.90 

29.07 

52 

43.11 

29.08 

42.98 

29.27 

42.85 

29.45 

42.73 

29.64 

52 

53 

43.94 

29.64 

43.81 

29.83 

43.68 

30.02 

43.. 55 

30.21 

53 

54 

44.77 

30.20 

44.64 

30.39 

44.. 50 

30.59 

44.37 

30.78 

54 

55 

45.60 

30.76 

45.46 

30,95 

45.33 

31.15 

45.19 

31.35 

55 

56 

46.43 

31.31 

46.29 

31.52 

46.15 

31.72 

46.01 

31.92 

56 

57 

47.26 

31.871 

47.12 

32.08 

46.98 

32.29 

46.83 

32. 4« 

57 

58 

48.08 

32.43 

47.94 

32.64 

47.80 

.32.85 

47.66 

33.  OG 

58 

59 

48.91 

32.99 

48.77 

33.21 

48.62 

33.42 

48.48 

33.63 

59 

60 
61 

49.74 

33.55 

49.60 

33.77 

49.45 

33.98 

49.30 

34.20 

60 
61 

50.57 

34.11 

50.42 

34.33 

50.27 

34.55 

.50.12 

34.77 

62 

51.40 

34.67 

51.25 

34.89 

51.10 

35.12 

50.94 

35.34 

62 

63 

52.23 

35.23 

52.08 

35.46 

51.92 

35.68 

51.76 

35.91 

63 

64 

53.06 

35.79 

52.90 

36.02 

52.74 

36.25 

52.59 

36.48 

64 

65 

53.89 

36.35 

53.73 

36.58 

53.57 

36.82 

53.41 

37.05 

65 

66 

54.72 

36.91 

54.55 

37.15 

54.39 

37.38 

54.23 

37.62 

66 

67 

55.55 

37.46 

55.38 

37.71 

55.22 

37.95 

55.05 

38.19 

67 

68 

.56.37 

38.03 

56.21 

38.27 

56.04 

38.52 

55.87 

38.76 

68 

69 

57.20 

38.58 

57.03 

38.83 

56.86 

39.08 

56.69 

39.33 

69 

70 

■  71 

58.03 

39.14 

57.86 

39.40 

57.69 

39.65 

57.52 

39.90 

70 

71 

58.86 

39.70 

58.69 

39.96 

58.51 

40.21 

58.34 

40.47 

72 

59.69 

40.26 

59.51 

40.. 52 

59.34 

40.78 

59.16 

41.04 

72 

73 

60.52 

40.82 

60.34 

41.08 

60.16 

41.35 

59.98 

41.61 

73 

74 

61.35 

41.38 

61.17 

41.65 

60.99 

41.91 

60.80 

42.18 

74 

75 

62.18 

41.94 

61.99 

42.21 

61.81 

42.48 

61.62 

42.75 

75 

76 

63.01 

42.50 

62.82 

42.77 

62.63 

43.05 

62.45 

43.. 32 

76 

77 

63.84 

43.06 

63.65 

43.34 

63.46 

43.61 

63.27 

43.89 

77 

78 

64.66 

43.62 

64.47 

43.90 

64.28 

44.18 

64.09 

44.46 

78 

79 

65.49 

44.18 

65.30 

44.46 

65.11 

44.75 

64.91 

45.03 

79 

80 
81 

66.32 

44.74 

66.13 

45.02 

65.93 

45.31 

65.73 

45 .  60 
46.17 

80 
81 

67.15 

45.29 

66.95 

45.59 

66.75 

45.88 

66.55 

82 

67.98 

45.85 

67.78 

46.15 

67.58 

46.45 

67.37 

46.74 

82 

83 

68.81 

46.41 

68.61 

46.71 

68.40 

47.01 

68.20 

47.31 

83 

84 

69.64 

46.97 

69.43 

47.28 

69.23 

47.58 

69.02 

47.88 

84 

85 

70.47 

47.53 

70.26 

47.84 

70.05 

48.14 

69.84 

48.45 

85 

86 

71.30 

48.09 

71.09 

48.40 

70.87 

48.71 

70.66 

49.02 

86 

87 

72.13 

48.65 

71.91 

48.96 

71.70 

49.28 

71.48 

49.59 

87 

88 

72.96 

49.21 

72.74 

49.53 

72.52 

49.84 

72.30 

50.16 

88 

89 

73.78 

49.77 

73.57 

50.09 

73.35 

50.41 

73.13 

50.73 

89 

90 
91 

74.61 

50.33 

74.39 

50.65 

74.17 

50.98 

73.95 

51.30 

90 
91 

75.44 

50.89 

75.22 

51.22 

75.00 

51.54 

74.77 

51.87 

92 

76.27 

51.45 

76.05 

51.78 

75.82 

52.11 

75.59 

52.44 

92 

93 

77.10 

52.00 

76.87 

52.34 

76.64 

52.68 

76.41 

53.01 

93 

94 

77.93 

52.56 

77.70 

52.90 

77.47 

53.24 

77.23 

53.58 

94 

95 

78.76. 
79.59* 

53.12 

78.53 

53.47 

78.29 

53.81 

78.06 

54.15 

95 

96 

53.68 

79.35 

54.03 

179.12 

54.37 

78.88 

54.72 

96 

97 

80.42 

54.24 

80.18 

54.59 

79.94 

54.94 

79.70 

55.29 

97 

98 

81.25 

,54.80 

81.01 

55.15 

80.76 

55.51 

80.52 

.55.86 

98 

99 

82.07 

55.36 

81.83 

55.72 

81.59 

,56.07 

81. .34 

56.43 

99 

100 

"oa 

Q 

82.90 

55.92 

82.66 

.56.28 

82.41 

56.64 

82.16 

.57.00 

100 

<u 
c 

.2 
Q 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

56  Deg. 

55|  Deg. 

551  Deg. 

55i  Deg. 

72 


TRAVERSE   TABLE. 


o 

3 
9 

35  Deg. 

1 

351  Deg. 

35i  Deg. 

351  Deg. 

1 

o 
p 

Lat. 

Dcp. 

Lat. 
0.82 

Dep. 

Lat. 

0.81 

Dep. 

Lat. 

Dep. 

1 

0.82 

0.57 

0.58 

"(Tss" 

0.81 

"0^58" 

I 

2 

1.64 

1.15 

1.63 

1.15 

1.63 

1.16 

1.62 

1.17 

2 

3 

2.46 

1.72 

2.45 

1.73 

2.44 

1.74 

2.43 

1.75 

3 

4 

3.28 

2.29 

3.27 

2.31 

3.26 

2.32 

3.25 

2. .34       4  1 

5 

4.10 

2.87 

4.08 

2.89 

4.07 

2.90 

4.06 

2.92 

5 

6 

4.91 

3.44 

4.90 

3.46 

4.88 

3.48 

4.87 

3.51 

6 

7 

5.73 

4.01 

5.72 

4.04 

5.70 

4.06 

5.68 

4.09 

7 

8 

6.. 55 

4.59 

6.53 

4.62 

6.51 

4.65 

6.49 

4.67 

8 

9 

7.37 

5.16 

7.35 

5.19 

7.33 

5.23 

7.30 

5.26 

9 

10 
'  11 

8.19 

5.74 

8.17 

5.77 

8.14 

5.81 

8.12 

5.84 

10 

9.01 

6.31 

8.98 

6.35 

8.96 

6.39 

8.93 

6.43 

11 

12 

9.83 

6.88 

9.80 

6.93 

9.77 

6.97 

9.74 

7.01      12  1 

13 

10.65 

7.46 

10.62 

7.50 

10.. 58 

7.55 

10.55 

7.60 

13 

14 

11.47 

8.03 

11.43 

8.08 

11.40 

8.13 

11.36 

8. IS 

14 

15 

12.29 

8.60 

12.25 

8.6.6 

12.21 

8.71 

12.17 

8.76 

15 

16 

13.11 

9.18 

13.07 

9.23 

13.03 

9.29 

12.99 

9.35 

16 

17 

13.93 

9.75 

13.88 

9.81 

13.84      9.87i 

13.80 

9.93 

17 

18 

14.74 

10.32 

14.70 

10.39 

14.65 

10.45 

14.61 

10.. 52 

18 

19 

15.56 

10.90 

15.. 52 

10.97 

15.47 

11.03 

15.42 

11.10 

19 

20 

16.38 

11.47 

16.33 

11. .54 

16.28 

11.61  i 

16.23 

11.68 

20 

21 

17.20 

12.05 

17.15 

12.12 

17.10 

12.19  1 

17.04 

12.27 

21 

22 

13.02 

12.62 

17.97 

12.70 

17.91 

12.78 

17.85 

12.85 

22 

23 

18.81 

13.19 

18.78 

13.27 

18.72 

13.36 

18.67 

13.44 

23 

24 

19.66 

13.77 

19.60 

13.85 

19.54 

13.94 

19.48 i  14.02 

24 

25 

20.48 

14.34 

20.42 

14.43 

20.. 35 

14.52 

120.29 

14.61 

25 

26 

21.30 

14.91 

21.23 

15.0' 

21.17 

15.10 

121.10 

15.19 

26 

27 

22.12 

15.49 

22.05 

15.58 

21.98 

15.68 

21.91 

15.77 

27. 

23 

22.94 

16.06 

22.87 

16. IS 

22.80 

16.26 

122.72 

16.36 

28 

29 

23.76 

16.63 

23.68 

16.74 

23.61 

16.84 

123.54 

16.94 

29 

30 
31 

24.57 

17.21 

24.50 

17. &1 

24.42 

17.42 

124.35 

17.53 

30 

25.39 

17.7S 

25.32 

17.89 

25.24 

18.00 

[25.16 
125.97 

18.11 

31 

32 

28.21 

18.. 35 

26.13 

18.47 

26.05  1  18.58 

18.70 

32 

33 

27.03 

18.93 

26.95 

19.05 

26.87 

19.16 

126.78 

19.28 

33 

34 

27.85 

19.50 

27.77 

19.62 

27.68 

19.74 

127.59 

19.86 

34 

35 

28 .  67 

20.08 

28.58 

20.20 

28.49 

20.32 

28.41 

20.45 

35 

36 

29.49 

20.65 

29.40 

20.78 

29.31 

20.91 

'29.22 

21.03 

36 

37 

30.31 

21.22 

30.22 

21.35 

30.12 

21.49 

30.03 

21.62 

37 

38 

31.13 

21.80 

31.03 

21.93 

30.94 

22.07 

30.84 

22.20 

38 

39 

31.95 

22.37 

31.85 

22.51 

31.75 

22.65 

31.65 

22.79 

39 

40 

32.77 

22.94 

32.67 

23.09 

32.56 

23.23 

1 32.46 

23.37 

40 

41 

33.59' 

23.52 

33.48 

23.66 

33. 3S 

23.81 

133.27 

23.95 

41 

42 

34.40 

24.09 

34.30 

24.24 

34.19 

24.39 

34.09 

24.. 54 

42 

43 

35.22 

24.66 

35.12 

24.82 

35.01 

24.97 

34.90 

25.12 

43 

44 

36.04 

25.24 

35.93 

25.39 

35.82 

25.55 

35.71 

25.71 

44 

45 

36.86 

25.81 

36.75 

25.97 

36.64 

26.13 

36.. 52 

«6.29 

45 

46 

37.68 

26.38 

.37.57 

26.55 

37.45 

26.71 

37.33 

26.88 

46 

47 

3S..50 

26.96 

.38.38 

27.13 

38.26 

27.29 

38.14 

27.46 

47 

48 

39.32 

27.53 

.39.20 

27.70 

.39.08 

27.87 

38.96 

28.04 

48 

49 

40.14 

28.11 

40.02 

28.  as 

39.89 

28.45 

39.77 

28.63 

49 

50 

40.96 

28.68 

40.83 

28.86 
Lat. 

40.71 

29.04 

40.58 

29.21 

50 

6 

Dep. 

Lat. 

Dep. 

Dep. 

Lat. 

Dep. 

Lat. 

§ 

c 

"an 

5 

.2 

Q 

55  Deg. 

541 

Deg. 

54^  Deg. 

544  Deg. 

TnAVERSE    TABLE. 


73 


51 

35  Deg. 

35i  Deg. 

35i  Deg. 

351  Deg. 

C 

1' 
s 

n 
a 

"51 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

41.. 39 

Dep. 

29.80 

41.78 

29.25 

41.65 

29.43 

41.52 

29.62 

52 

42.60 

29.83 

42.47 

30.01 

42.. 33 

30.20 

42.20 

30.38 

62 

53 

43.42 

30.40 

43.28  1  30.59 

43.15 

30.78 

43.01 

80.97 

53 

54 

44.23 

30.97 

44.10 

31.17 

43.96 

31.36 

43.82 

3i..55 

54 

55 

45.05 

31.55 

44.92 

31.74 

44.78 

31.94 

44.64 

32.13 

55 

56 

45.87 

32.12 

45.73 

32.32 

45.. 59 

32.52 

45.45 

32 .  72 

66 

57 

46.69 

32.69 

46.55 

32.90 

46.40 

33.10 

46,26 

33-30 

57 

58 

47.51 

.33.27 

47.37 

33.47 

47.22 

33.68 

47.07 

33.89 

58 

59 

48.33 

33.84 

48.18 

34.05 

48.03 

34.26 

47-88 

34.47 

69 

60 
61 

49.15 

34.41 

49.00 

34.63 

48.85 

34.84 

48.69 
49.51 

35.05 
35.64" 

60 
61 

49.97 

34.99 

49.82 

.35.21 

49.66 

35.42 

62 

60.79 

35.56 

50.63 

.35.78 

50.48 

36.00 

50.32 

36.22 

62 

63 

51.61 

36.14 

51.45 

36.36 

51.29 

36.58 

51.13 

36.81 

63 

64 

52.43 

36.71 

.52.27 

36.94 

.52.10 

37.16 

51.94 

37-39 

64 

65 

53.24 

37.28 

53.08 

37.51 

52.92 

37.75 

52.75 

37.98 

65 

66 

54.06 

37.86 

53.90 

38.09 

,53.73 

.38.33 

53.. 56 

38.56 

66 

67 

54.88 

38.43 

.54.71 

38.67 

.54.55 

38.91 

54.38 

39.14 

67 

68 

55.70 

39.00 

55.. 53 

39.55 

.55.36 

39.49 

55.19 

39.73 

68 

69 

56.. 52 

39.58 

56.35 

39.82 

,56.17 

40.07  i 56.00 

40.31 

69 

70 
71 

57.34 

40.15 

57.10 

40  40 

56.99 

40.65  '  56.81 

40.90 
41.48 

70 
71 

58.16 

40.72 

57.98 

40.98 

57.80 

41.23 

57  -  62 

72 

58.98 

41.30 

58.80 

41.. 55 

58 .  62 

41.81 

58-43 

42.07 

72 

73 

.59.80 

41.87 

59.61 

42.13 

59.43 

42.39 

59-24 

42.65 

73 

74 

60.62 

42.44 

60.43 

42.71 

60.24 

42.97 

60-06 

43.23 

74 

75 

61.44 

43.02 

61.25 

43.29 

61.06 

43.55 

60-87 

43.82 

75 

76 

62.26 

43.59 

62.06 

43.86 

61.87 

44.13 

61.68 

44.40'  76  1 

77 

63.07 

44.17 

62.88 

44.44 

62.69 

44.71 

62.49 

44.99 

77 

78 

63.89 

44.74 

63.70 

45.02 

63.50 

45.29 

63.30 

45.57 

78 

79 

64.71 

45.31 

64.51 

45.59 

64.32 

45.88 

64.11 

40.16 

79 

80 
81 

65.. 53 

45.89 

65.. 33 
66.15 

46.17 
46.75 

65.13 

46.46 

64.93 
65.74 

46.74 

80 
81 

6H.35 

46.46 

65.94 

47.04 

47.32 

82 

67.17 

47.03 

66.90 

47.33 

66.76 

47.62 

66.. 55 

47.91 

82 

83 

67.99 

47.61 

67.78 

47.90 

67.. 57 

48.20 

67.36 

48.49 

83 

84 

6S.81 

48.18 

68.60 

48.48  1 

68.. 39 

48.78 

68.17 

49.08 

84 

85 

09.63 

48.75 

69.41 

49.06  1 

69.20 

49.-36 

68.98 

49.66 

85 

86 

70.45 

49.33 

70.23 

49.63 

70.01 

49.94 

69.80 

,50.25 

86 

87 

71.27 

49.90 

71.05 

50.21 

70.83 

.50.-52 

70.61 

50.83 

87 

88 

72.09 

50  47 

71.86 

.50.79 

71.64 

51.10 

71-42 

51.41 

88 

89 

72.90 

51.05 

72.68 

51.37 

72.46 

51.68 

72-23 

52.00 

89 

90 
91 

73.72 

51.62 

73.50 

51.94 

73^7. 

.52.26 

73.04 

,52.58 

90 

74.54 

52.20 

74.31 

.52.52 

74.08 

.52.84 

73.85 

53.17 

91 

92 

75.36 

52.77 

75.13 

53.10 

74.90 

53.42 

74.66 

53.75 

92 

93 

76.18 

53., 34 

75.95 

53.67 

75.71 

54.01 

75.48 

54.34 

93 

94 

77.00 

53.92 

76.76 

54.25 

76.-53 

.54.. 59 

76.29 

54.92 

94 

95 

77.82 

54.49 

77.58 

54.83 

77.34 

55.17 

77.10 

55.50 

95 

96 

78.64 

55.06 

78.40 

.55.41 

78.16 

55.75 

77.91 

56.09 

96 

97 

79.46 

55.64 

79.21 

.55.98 

7S  97 

56.33 

78.72 

.56.67 

97 

98 

80.28 

56.21 

80.03 

.56.. 56 

79.78  56.91 

79.53 

57.26 

98 

99 

81.10 

56.78 

80.85 

57.14 

80.60  57.49 

80.35 

-57.84 

99 

J  00 

81.92 

57.36 

81.66 

57.71 

81.41 

58.07 

81.16 

58.42 

100 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat- 

c 

55  Deg. 

541  Deg. 

1 
54i  Deg. 

54i  Deg. 

u 


TTIAVEKSr.    TAHI-H. 


o 

1       36  Deg. 

36i  Deg. 

36^  Deg. 

361  Deg. 

C 

? 

1 

1 

3 

? 

'     1 

I    Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

0.81 

"~0".59" 

0.81 

0.59 

0.80 

0.59 

0.80 

0.60 

2 

1.62!     1.18 

1.61 

1.18 

1.61 

1.19 

1.60 

1  20 

2 

3 

2.43      1.76 

2.42 

1.77 

2.41 

1.78 

2.40 

1.79 

3 

4 

3.24      2.35 

3.23 

2.37 

3.22 

2.38 

3.20 

2.39 

4 

5 

4.05!    2.94 

4.03 

2.96 

4.02 

2.97 

4.01 

2.99 

5 

6 

4.85  1    3.53 

4.84 

3.55 

4.82 

3.57 

4.81 

3.59 

6 

7 

5.66      4.11 

5.65 

4.14 

5.63 

4.16 

5.61 

4.19 

7 

8 

6.47,    4.70 

6.45 

4.73 

6.43 

4.76 

6.41 

4.79 

8 

9 

7.28  1    5.29 

7.26 

5.32 

7.23 

5.35 

7.21 

5. 38 

9 

10 

11 

8.09  1    5.88 

8.06 

5.91 

8.04 

5.95 

8.01 

5.98 

10 
11 

8.90;    6.47 

8.87 

6.. 50 

8.84 

6.54 

8.81 

6.58 

12 

9.71 

7.05 

9.68 

7.10 

9.65 

7.14 

9.61 

7.18 

12 

13 

10.52 

7.64 

10.48 

7.69 

10.45 

7.73 

10.42 

7.78 

13 

14 

11.33 

8.23 

11.29 

8.28 

11.25 

8.33 

11.22 

8.38 

14 

15 

12.14 

8.82 

12.10 

8.87 

12.06 

8.92 

12.02 

8.97 

15 

16 

12.94 

9.40 

12.90 

9.46 

12.86 

9.53 

12.82 

9.57 

16 

17 

13.75 

9.99 

13.71 

10.05 

13.67 

10.11 

13.62 

10.17 

17 

18 

14.50 

10.58 

14.52 

10.64 

14.47 

10.71 

14.42 

10.77 

18 

19 

15.37 

11.17 

15.32 

11.23 

15.27 

11.30 

15.22 

11.37 

19 

20 
21 

16.18 

11.76 

16.13 

11.83 

16.08 

11.90 

16.03 

11.97 
12.56 

20 
.21 

16.99 

12. .34 

16.94 

12.42 

16.88 

13.49 

16.83 

22 

17.80 

12.93 

17.74 

13.01 

17.68 

13.09 

17.63 

13.16 

22 

23 

18.61 

13.52 

18.55 

13.60 

18.49 

13.68 

18.43 

13.76 

23 

24 

19.42 

14.11 

19.35 

14.19 

19.29 

14.28 

19.23 

14.36 

24 

25 

20.23 

14.69 

20.16 

14.78 

20.10 

14.87 

20.03 

14.96 

25 

26 

21.03 

15.28 

20.97 

15.37 

20.90 

15.47 

20.83 

15.66 

26 

27 

21.84 

15.87 

21.77 

15.97 

21.70 

16.06 

21.63 

16.15 

27 

28 

22.65 

16.46 

22.58 

16.56 

22.51 

16.65 

22.44 

16.75 

28 

29 

23.46 

17.05 

23.39 

17.15 

23.31 

17.25 

23.24 

17.35 

29 

30 
31 

24.27 

17.63 

24.19 

17.74 

24.12 

17.84 

24.04 

17.95 

30 
31 

25.08 

18.22 

25.00 

18.33 

24.92 

18.44 

24.84 

18.55 

32 

25.89 

18.81 

25.81 

18.92 

25.72 

19.03 

25.64 

19.15 

32 

33 

26.70 

19.40 

26.61 

19.51 

26.53 

19.63 

26.44 

19.74 

33 

34 

27.51 

19.98 

27.42 

20.10 

37.33 

20.22 

27.24 

20.34 

34 

35 

28.32 

20.57 

28.23 

20.70 

38.13 

20.82 

28.04 

20.94 

35 

36 

29.12 

21.16 

29.03 

21.29 

38.94 

21.41 

28.85 

21.54 

36 

37 

29.93 

21.75 

29.84 

21.88 

39.74 

22.01 

29.65 

22.14 

37 

38 

30.74 

23.34 

30.64 

22.47 

30.55 

22.60 

30.45 

22.74 

38 

39 

31.55 

22.92 

31.45 

23.06 

31.35 

23.20 

31.25 

23.33 

39 

40 
41 

32.36 

23.51 

32.26 

23.65 

32.15 

23.79 

32.05 

23.93 

40 
41 

33.17 

24.10 

33.06 

24.24 

32.96 

24.39 

32.85 

24.53 

42 

33.98 

24.69 

33.87 

24.83 

33.76 

24.98 

33.65 

25.13 

42 

43 

34.79 

25.37 

34.68 

25.43 

34.57 

25.58 

34.45 

25.73 

43 

44 

35.60 

25.86 

35.48 

26.02 

35.37 

36.17 

35.26 

26.33 

44 

45 

3G.41 

26.45 

36.29 

26.61 

36.17 

36.77 

36.06 

26.92 

45 

46 

37.21 

27.04 

37.10 

27.20 

36.98 

37.36 

36.86 

27.52 

46 

47 

38.03 

27.63 

37.90 

27.79 

37.78 

37.96 

37.66 

28.12 

47 

48 

38.83 

28.21 

38.71 

28.38 

38.59 

28.55 

38.46 

28.72 

48 

49 

39.64 

28.80 

39.52 

28.97 

39.39 

29.15 

39.26 

29.33 

49 

50 

40.45 

29.39 

40.32 

29.57 

40.19 

29.74 

40.06 

39.92 

50 
a 

■s 

1 

Dop. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

54  Deg. 

53|  Deg. 

53i  Deg. 

53i  Deg. 

TEAVERSE   TABLE. 


75 


o 

1 

? 

51 

36  Deg. 

11 
36i  Deg. 

36i  Deg. 

361  Deg. 

O 

3 
? 

'51 

Lat. 

Dep. 

Lat. 

Dep. 

Lat.      Dep 

Lat. 

Dep. 

41.26 

29.98 

41.13 

ToTTe" 

41.00 

30.34! 

40.86 

30.51 

52 

42.07 

30.56 

41.94 

30.75 

41.80 

30.93 

41.67 

31.11 

52 

63 

42.88 

31.15 

42.74 

31.34 

42.60 

31.53 

42.47 

31.71 

63 

54 

43.69 

31.74 

43.55 

31.93 

43.41 

32.12 

43.27 

32.31 

64 

65 

44.50 

32.33 

44.35 

32.52 

44.21 

32.72 

44.07 

32.91 

55 

56 

45.30 

32.92 

45.16 

33.11 

45.02 

33.31 

44.87 

33.51 

56 

57 

46.11 

33.50 

45.97 

33.70 

45.82 

33.90 

45.67 

34.10 

57 

58 

46.92 

34.09 

46.77 

34.30 

46.62 

34.50 

46.47 

34.70 

68 

59 

47.73 

.34.68 

47.58 

34.89 

47.43 

35  09 

47.27 

35.30 

69 

GO 
61 

48.. 54 

35.27 

48.39 

.35.48 

48.23 

35.69 

48.08 

35.90 

60 
61 

49.35 

35.85 

49.19 

3G.07 

49.04 

36.28  1 

48.88 

36.50 

62 

50.16 

36.44 

.50.00 

36.66 

49.84 

36.88 

49.68 

37.10 

62 

63 

50.97 

37.03 

50.81 

37.25 

50.64 

37.47 

50.48 

37.69 

63 

64 

51.78 

37.62 

51.61 

37.84 

51.45 

38.07 

51.28 

38.29 

64 

65 

52.59 

38=21 

52.42 

38.44 

52.25 

3S.66 

52.08 

38.89 

65 

66 

53.40 

38.79 

53.23 

39.03 

53.05 

39.26 

52.88 

39.49 

66 

67 

54.20 

39.38 

54.03 

39.62 

53.86 

39.85 

53.68 

40.09 

67 

68 

55.01 

39.97 

54.84 

40.21 

64.66 

40.45 

54.49 

40.69 

68 

69 

55.82 

40.56 

55.04 

40.80 

55.47 

41.04; 

55.29 

41.28 

69 

70 
71 

50.63 

41.14 

56.45 

41.39 

56.27 

41.64* 

56.09 

41.88 

42.48 

70 

71 

57.44 

41.73 

57.26 

41.98 

57.07 

42.23 

56.89 

72 

58.25 

42.32 

58.06 

42.57 

57.88 

42.83 

57.69 

43.08 

72 

73 

59.06 

42.91 

.58.87 

43.17 

58.68 

43.42 

58.49    43.68 

73 

74 

59.87 

43.50 1 

59.68 

43.76 

59.49 

44.02 

69.29    44.28 

74 

75 

60.68 

44.08 

60.48 

44.35 

60.29 

44.61 

60.09    44.87 

75 

76 

61.49 

44.67 

61.29 

44.94 

61.09 

45.21 

60.90 

45.47 

76 

77 

62.29 

45.26 

62.10 

45.53 

61.90 

45.80 

61.70 

46.07 

77 

78 

63.10 

45.85 

62.90" 

46.12 

62.70 

46.40 

62.50 

46.67 

78 

79 

63.91 

46.43 

63.71 

46.71 

63.50 

46.99 

63.30 

47.27 

79 

80 
81 

64.72 

47.02 

64.52 

47.30 

64.31 

47.59 

! 64.10 

47.87 

80 
81 

65.53 

47.61 

65.32 

47.90 

65.11 

48.18 

i 64.90 

48.46 

82 

66.34 

48.20 

66.13 

48.49 

65.92 

48.78 

'65.70 

49.06 

82 

83 

67.15 

48.79 

66.93 

49.08 

66.72 

49.37 

66.50 

49.66 

83 

84 

67.96 

49.37 

67.74 

49.67 

67.52 

49.97 

'67.31 

50.26 

84 

85 

68.77 

49.96 

68.55 

.50.26 

68.33 

50.56 

68.11 

50.86 

85 

86 

69.58 

50.55 

60.35 

50.85 

69.13 

51.15 

'68.91 

51.46 

86 

87 

70.38 

51.14 

70.16 

51.44 

69.94 

51.75 

69.71 

52.05 

87 

88 

71.19 

51.73 

70.97 

52.04 

70.74 

52.34 

70.51 

62.65 

88 

89 

72.00 

52.31 

71.77 

52.63 

71.54 

52.94 

171.31 

53.25 

89 

90 
91 

72.81 

52.90 

72.58 

53.22 

72.35 

53.53 

i72.11 

53.85 

90 
91 

73.62 

53.49 

73.39 

53.81 

73.15 

54.13 

72.91 

64.45 

92 

74.43 

54.08 

74.19 

54.40 

73.95 

54.72 

73.72 

55.05 

92 

93 

75.24 

.54.66 

75.00 

54.99 

74.76 

55.32 

!  74.52 

55.64 

93 

94 

76.05 

55.25 

75.81 

55.. 58 

75.56 

55.91 

1  75.32 

56.24 

94 

95 

76.86 

55.84 

76.61 

56.17 

76.37 

66.51 

76.12 

56.84 

95 

96 

77.67 

56.43 

77.42 

.56.77 

77.17 

57.10 

76.92 

57.44 

96 

97 

78.47 

57.02 

78.23 

57.38 

77.97 

57.70 

77.72 

58.04 

97 

98 

79.28 

57.60 

79.03 

57.95 

78.78 

58.29 

78.. 52 

58.64 

98 

99    80.09 

58.19 

79.84 

58.54 

79.58 

58.89 

79-32 

59.23 

99 

100 

8 

a 

Li 

80.90 

58.78 

80.64 

59.13 

80.39 

59.48 

80.13 
Dep. 

59.83 
Lat. 

100 

S 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

54  Deg. 

531  Deg. 

53i  Deg. 

53i  Deg. 

?6 


TRAVERSE    TAHLK. 


if 

37  Deg.      1 

37;^  Deg. 

37i  Deg. 

37|  Deg. 

in' 
n 

Lat. 

Dep. 

Lat.      Dep. 

Lat. 

Dep. 

Lat. 
0.79 

Dep. 

0.80 

0.60 

0.80      0.61 

0.79 

0.61 

0.61 

1 

2 

1.60 

1.20 

1..59 

1.21 

1.59 

1.22 

1.58 

1.22 

2 

3 

2.40 

1.81 

2.39 

1.82 

2.38 

1.83 

2.37 

1.84 

3 

4 

3.19 

2.41 

3.18 

2.42 

3.17 

2.13 

3.16 

2.45 

4 

5 

3.99 

3.01 

3.98 

3.03 

3.97 

3.04! 

3.95 

3.06 

5 

6 

4.79 

3.61 

4.78 

3.63 

4.76 

3.65 

4.74 

3.67 

6 

7 

5.59 

4.21 

5.57 

4.24 

5.. 55 

4.26 

5.53 

4.29 

7 

8 

6.39 

4.81 

6.37 

4.84 

6.35 

4.87 

6.33 

4.90 

8 

9 

7.19 

5.42 

7.16 

5.45 

7.14 

5.48 

7.12 

5.51 

9 

10 

7.99 

6.02 

7.96 

6.05 

7.93 

6.09  1 
6.70 

7.91 

6.12 

10 
11 

11 

8.78 

6.62 

8.70 

6.66 

8.73 

8.70 

6.73 

12 

9.58 

7.22 

9.55 

7.26 

9.52 

7.31 
7.91 

9.49 

7.35 

12 

13 

10.33 

7.82 

10.35 

7.87 

10.31 

10.28 

7.96 

13 

14 

11.18 

8.43 

11.14 

8.47 

11.11 

8..52I 

11.07 

8.57 

14 

15 

11.98 

9.03 

11.94 

9.08 

11.90 

9.131 

11.86 

9.18 

15 

16 

12.78 

9.63 

12.74 

9.68 

12.69 

9.74! 

12.65 

9.80 

16 

17 

13.. 58 

10.23 

13.53 

10.29 

13.49 

10.35 

13.44 

10.41 

17 

18 

14.38 

10.83 i 

14.33 

10.90 

14.28 

10.96 

14.23 

11.02 

18 

19 

15.17 

11.43  1 

15.12 

11.50 

15.07 

11.57 

15.02 

11.63 

19 

20 

21 

15.97 
16.77 

12.04  1 

15.92 

12.11 

15.87 

12.18 

15.81 

12.24 

20 

12.641 

16.72 

12.71 

16.66 

12.78 

16.60 

12.80 

21 

22 

17.57    13.24! 

17.51 

13.32 

17.45 

13.39 

17.40 

13.47 

22 

23 

18.37 

13.84 

18.31 

13.92 

18.25 

14.00 

18.19 

14.08 

23 

24 

19.17 

14.44 

19.10 

14.53 

19.04 

14.61 

18.98 

14.69 

24 

25 

19.97 

15.05 

19.90 

15.13 

19.83 

15.22 

19.77 

15.31 

25 

26 

20.76 

15.65 

20.70 

15.74 

20.63 

15.83 

20.56 

15.92 

26 

27 

21. .56 

16.25 

21.49 

16. .34 

21.42 

16.44 

21.35 

16.. 53 

27 

28 

22.33 

16.85 

22.29 

16.95 

22.21 

17.05 

22.14 

17.14 

28 

29 

23.16 

17.45 

23.08 

17.55 

23.01 

17.65 

22.93 

17.75 

29 

30 
31 

23.96 
24.76 

18.05 

23.88 

18.16 

23.80 

18.26 

23.72 

18.37 

30 

18.06 

24.68 

18.76 

24.. 59 

18.87 

24.51 

18.98 

31 

32 

25.. 56 

19.26 

25.47 

19.37 

25.39 

19.48 

25.30 

19.59 

33 

33 

26.35 

19. 8G 

26.27 

19.97 

26.18 

20.09 

26.09 

20.20 

33 

34 

27.15 

20.46 

27.06 

20.58 

26.97 

20.70 

26.88 

20.82 

34 

35 

27.95 

21.06 

27.86 

21.19 

27.77 

21.31 

27.67 

21.43 

35 

36 

28.75 

21.67 

28.66 

21.79 

28.-56 

21.92 

28.46 

22.04 

36 

37 

29.55 

22.27 

29.45 

22.40 

29.35 

22.. 52 

29.26 

22.65 

37 

38 

30.35 

22.87 

30.25 

23.00 

30.15 

23.13 

30.05 

23.26 

38 

39 

31.15 

23.47 

31.04 

23.61 

30.94 

23.74 

30.84 

23.88 

39 

40 
41 

31.95 
32.71 

24.07 

31.84 

24.21 

31.73 

24.35 

31.03 

24.49 

40 
41 

24.67 

32.64 

24.82 

32  53 

24.96 

32.42 

25.10 

42 

33.54 

25.28 

33.43 

25.42 

33  32 

25.57 

33.21  j  25.71 

42 

43 

34.34 

25 .  88 

34.23 

26.03 

34.11 

26.18 

34.00 '26.-33!   43  | 

44 

35.14 

20.48 

35.02 

26.63 

34.91 

26.79 

34.79 

26.94 

44 

45 

35.94 

27.08 

35.82 

27.24 

35.70 

27.39 

35.58 

27.55 

45 

40 

36.74 

27.68 

38.62 

27.84 

36.49    28.00 

36.37 

28.  ;6 

46 

47 

37.54 

28.29 

37.41 

28.45 

37.29    28.61 

37.16 

28.77 

47 

48 

38.33 

28.89 

38.21 

29.05 

.38.08    29.22 

37.95 

29.39 

48 

49 

39.  13 

29.49 

39.00 

29.66 

38.87,  29,83 

38.74 

30.00 

i9 

50 

o 
u 

C 

39.93 

30.09 

39.80 

30.26 

39.67 
Dep. 

j  30.44 

39 .  53 

30.61 

50 

Dep. 

Lat. 

Dep. 

Lat. 

Lat. 

Dep. 

Lat. 

6 
0 

53  Deg. 

521  Deg. 

52i  Deg. 

52k  Dog. 

TRAVKRSE    TABLE. 


77 


05 
P 

3 

8 

"51 

37  Deg. 

31^  Deg. 

37^  Deg. 

37|  Deg. 

D 

s 

p 

51 

Lat. 

Dcp. 

Lat. 

Dep. 

30.87 

Lat. 

Dcp. 
31.05 

Lat. 

Dep. 

40.73 

.30.69 

40.60 

40.46 

40.33 

31.22 

52 

41. .53 

31.29 

41.. 39 

31.48 

41.25 

31.66 

41.12 

31.84 

52 

53 

42.33  131.90 

42.19 

32 .  08 

42.05 

32.26 

41.91 

32.45 

53 

54    43.13 

b2.50 

42.98 

32.69 

42.84 

32.87 

42.70 

33.06 

54 

55    43.92 

33.10 

43.78 

33.29 

43.63 

33.48 

43.49 

33.67 

55 

56    44.72 

33.70 

44.58 

33.90 

44.43 

34.09 

44.28 

34.28 

66 

57    45.52 

34.. 30 

45.37 

34., 50 

45.22 

34.70 

45.07 

34.90 

57 

.58    46.32 

34.91 

46.17 

35 . 1 1 

46.01 

35.31 

45.86 

35.51 

58 

.59    47.12 

35.51 

46.96 

35.71 

46.81 

35.92 

46.65 

36.12 

59 

60 
61 

47.92 

36.11 

47.76 

36.32 

47.60 

36.53 
37.13 

47.44 

36.73 

60 

48.72 

36.71 

48.56 

,36.92 

48.39 

48.23 

37.35 

61 

62 

49.52 

37.31 

49.35 

37.53 

49.19 

37.74 

49.02 

37.96 

62 

63 

.50.31 

37.91 

50.15 

38.13 

49.98 

38.35 

49.81 

38.57 

63 

64 

51.11 

38.. 52 

50.94 

38.74 

.50.77 

38.96 

.50.60 

.39.18 

64 

65 

51.91 

39.12 

51.74 

39.34 

51.57 

39.57 

51.39 

39.79 

66 

66 

52.71 

39.72 

.52.54 

39.95 

52.36 

40.18 

52.19 

40.41 

06 

67 

53.51 

40.32 

.53.33 

40.55 

53.15 

40.79 

.52.98 

41.02 

67 

6S 

54.31 

40.92 

54.13 

41.16 

53.95 

41.40 

53.77 

41.63 

68 

69 

.55.11 

41.53 

.54.92 

41.77 

54.74 

42.00 

.54.56 

42.24 

69 

70 

'71 

.05.90 
.56.70 

42.13 
42.73 

55.72 

42.37 

.55.. 53. 

42.61 

.55.35 

42  86 
43.47 

70 
71 

.56.52 

42.98 

.56.33 

43.22 

.56.14 

72 

57.. 50 

43.33 

57.31 

43.. 58 

57.12 

43.83 

,56.93 

44.08 

72 

73 

58.30 

43.93 

.58.11 

44.19 

57.91 

44.44 

57.72 

44.69 

73 

74 

.59.10 

44.. 53 
45.14: 

.58.90 

44.79 

.58.71 

45.05 

58.51 

45.30 

74 

75 

59 .  90 

59.70 

45.40 

.59., 50 

45.66 

59., 30 

45.92 

7f. 

76 

60.70 

45.74  1 

60.. 50 

46.00 

60.29 

46.27 

60.09 

46.. 53 

76 

77 

61.40  |46.34| 

61.29 

46.61 

61.09 

46.8/ 

60.88 

47.14 

77 

78 

62.29  146.94! 

62.09 

47.21 

61.88 

47.48 

61.67 

47.75 

78 

79 

63.09  147.54! 

62.88 

47.82 

62.67 

48.09 

62.46 

48.. 37 

79 

80 

81 

63.89 
64.89 

48.151 

63.68 

48.42 

63.47 

48.70 
49.31 

63.20 

48.98 

80 

81 

48.75! 

64.48 

49.03' 

<i4 .  26 

04 .  05 

49.59 

82 

65.49 149.35 

65.27 

49.63 

65.05 

49.92 

64.84 

50.20 

82 

83 

66.29 149.95 

66.07 

.50.24 

65.85 

5=0.. 53 

65.63 

.50.81 

83 

84 

67.09    50.55 

66.86 

.50.84 

66.64 

51.14 

66.42 

51.43 

84 

85 

67.88  151.15 

67.66 

51.45 

67.43 

51.74 

67.21 

.52.04 

86 

86 

68.68  151.76 

68.46 

52.06  1 

G8.23 

.52.35 

68.00 

.52.65 

86 

87 

69.48  ;  52.36 

69.25 

,52.66! 

69.02 

52.96 

68.79 

.53.26 

87 

88 

70.28  1.52.96 

70.05 

.53.27  1 

69.82    53.57 

69.. 58 

,53.88 

88 

89 

71.08  :  ,53.56 

70.84 

.53.87 

70.61  i  54.18 

70.07 

.54.  •19 

89 

90 
"91 

71.83  i  .54.16 

71.64 

.54.48 

71.40 
72.20 

.54.79 
.55.40  1 

71.16 

55 . 1 0 

90 

72. 6S  ,  .54.77 

72.44 

55.08  1 

71.95 

.55.71 

91 

92 

73.47    55.37 

73.23 

55.69! 

72.99 

56.01  1 

72.74 

.56.32 

92 

93 

74.27    55.97 

74.03 

.56.29! 

73.78 

56.61 

73.. 53 

56.94 

93 

94 

75.07  ;  56.57 

74.82 

56.90 

74.58 

57.22 

74.32 

,57.. 55 

94 

95 

75.87  157.17 

75.62 

57.. 50 

75.37 

57.83 

75.12 

.58.16 

95 

96 

76. 67    .57. 77 

76.42 

.58.111 

76.16 

58.44 

75.91 

68 .  77 

96 

97 

77.47    58.38 

77.21 

.58.71  1 

76.96 j  59.05  1 

76.70 

59.39 

97 

98 

78.27  '  58,98 

78.01 

59.32  1 

77.75  1  59.66 

77.49 

60.00 

98 

99 

79.06    .59.58 

78.80 

59.92  1 

78.54  1  60.27 

78.28 

60.61 

99 

100 

6 

V 

79.86    60.18 

79.60 

60.53 i 

79.34    60.88  1 
Dep        Lai, 

79.07 

6). 22 

100 

6 

o 

c 

Dcp.  1    Lat. 

Dep. 

Lat.  1 

Dcp. 

Lat. 

1 

ll 

■£ 

53  Deg. 

521  Deg. 

52^  Deg.      1,       52ii  Deg. 

2 

22 


TRAVTCRSE    TABLE. 


2 

38  Deg. 

3S\  Deg. 

38i  Deg. 

38;  D.-jj.     j 

r.' 

P 
S 
o 

3 
o 
o 

Lai.   I   Dep. 

Lat. 

Dep. 

Lat.      Dep. 

Lat. 

Dep. 

"T"  " 

0.79 

0.62 

0.79 

0.62 

0.78 

0.62 

0.78 

0.63 

1 

9, 

1.58 

1.23 

1.57 

1.24 

1.57 

1.24 

1.56 

1.25 

2 

3 

2.36 

1.85 

2.36 

1.86 

2.35 

1.87 

2.34 

1.88 

3 

4 

3.15 

2.46 

3.14 

2.48 

3.13 

2.49 

3.12 

2.60 

4 

f) 

3.94 

3.08 

3.93 

3.10 

3.91 

3   11 

3.90 

3.13 

5 

r» 

4.73 

3.69 

4.71 

3.71 

4.70 

3.74 

4.68 

3.76 

6 

7 

5.52 

4.31 

5.50 

4.33 

5.48 

4.36 

5.46 

4.38 

7 

8 

6.30 

4.93 

6.28 

4.95 

6.26 

4.98 

6.24 

5.01 

8 

q 

7.09 

5.54 

7.07 

5.57 

7.04 

5.60 

7.02 

5.63 

9 

10 

11 

7.88      6.161 

7.85 

6.19 

7.83 

6.23 

7.80 

6.26 

10 

8.67 

6.77 

8.64 

6.81 

8.61 

6.85 

8.58 

6.89 

11 

l?r 

9.46 

7.39 

9.42 

7.43 

9.39 

7.47 

9.36 

7.51 

12 

13 

10.24 

8.00 

10.21 

8.05 

10.17 

8.09 

10.14 

8.14 

13 

14 

11.03 

8.62 

10.99 

8.67 

10.96 

8.72 

10.92 

8.70 

14 

15    11.82 

9.23 

11.78 

9.29 

11.74 

9.34 

11.70 

9.39 

15 

16    12.61 

9.85 

12.57 

9.91 

12.52 

9.96 

12.48 

10.01 

16 

17     13.40    10.47  1 

13.35 

10.52 

13.30 

10.58 

13.26 

10.64 

17 

18  I  14.18 

11.08 

14.14 

11.14 

14.09 

11.21 

14.04    11.27 

18 

19  1 14.97 

11.70 

14.92 

11.76 

14.87 

11.83 

14.82    11.89 

19 

20 

15.76 

12.31 

15.71 

12.38 

15.65 

12.45 

15.60 

12.52 

20 

21 

?.1 

16.55 

12.93 

16.49 

13.00 

16.43 

13.07 

16.38 

13.14 

9,9, 

17.34 

13.54 

17.28 

13.62 

17.22 

13.70 

17.16 

13.77 

22 

93 

18.12 

14.16 

18.06 

14.24 

18.00 

14.32 

17.94 

14.40 

23 

24 

18.91 

14.78 

18.85 

14.86 

18.78 

14.94 

,18.72 

15.02 

24 

95 

19.70 

15.39 

19.63 

15.48 

19.. 57 

15.56 

19.50 

15.65 

25 

96 

20.49 

16.01 

20.42 

16.10 

20.35 

16.19 

20.28 

16.27 

26 

97 

21.28 

16.62 

21.20 

16.72 

21.13 

16.81 

21.06 

16.90 

27 

98 

22.06 

17.24 

21.99 

17.33 

21.91 

17.43 

121.84 

17.-53 

28 

99 

22.85 

17.85 

22.77 

17.95 

22.70 

18.05 

22.62 

18.15 

29 

30 

23.64  1  18.47 

23.56 

18.57 

23.48 

18.68 

23.40 

18.78 

30 

31 

24.43 

19.09 

24.34 

19.19 

24.26 
25.04 

19.30 

;24.18 

19.40 

31 

39 

25.22 

19.70 

25.13 

19.81 

19.92 

; 24.96 

20.03 

32 

33 

26.00 

20.32 

25.92 

20.43 

25.83 

20.54 

^25.74 

20.66 

33 

34 

26.79 

20.93 

26.70 

21.05 

26.61 

21.17 

26.52 

21.28 

34 

35 

27.58 

21.55 

27.49 

21.67 

27.39 

21.79 

127.30 

21.91 

35 

36 

28.37 

22.16 

28.27 

22.29 

28.17 

22.41 

28.08 

22.53 

36 

37 

29.16 

22.78 

29.06 

22.91 

28.96 

23.03 

128.86 

23.16 

37 

38 

29.94 

23.40 

29.84 

23.53 

29.74 

23.66  '129.64 

23.79 

38 

39 

30.73 

24..  01 

30.63 

24.14 

.30.52 

24.28 

,30.42 

24.41 

39 

40 

31.52 

24  .-.63 

31.41 

24.76 

31.30 

24.90 

31.20 

25.04 

1  40 
41 

41 

32.31 

25.24 

32.20 

25.38 

32.09 

25.52 

1131.98 

25.66 

49 

33.10  125.86 

32.98 

26.00 

1  32.87 

26.15  !  32.76 

26.29 

42 

43 

33. 8S 

26.47 

33.77 

26.62 

1  33.65 

26.77  j 33.53 

26.91 

43 

44 

34 .  67 

27.09 

34.55 

27.24 

!  34.43 

27.39   (.34. 31 

27.54 

44 

45 

35.46 

27.70 

35.34  127.86 

1   35.22 

28.01 

35.09 

28.17 

45 

46 

36.25 

28.32 

36.12  1  28.48 

36.00 

28.64 

35. 8J 

28.79 

46 

47 

37.04 

28.94 

36.91     29.10 

36.78 

29.26 

36.65 

29.42 

47 

48 

37.82 

29.55 

37.70    29.72 

37.57 

29.88  li  37.43 

30.04 

i   48 

49 

38.61 

30.17 

38.48    30.34 

38.35 

30.50 

1  38.21 

30.67 

49 

50 

39.40 

30.78 

39.27  1  30.95 

39.13 

31.13 

38.99 

31.30 

50 

6 
o 

Dep. 

Lat. 

Dep.       Lat. 

Dep. 

Lat. 

Dep. 

La,. 

J3 

C 

'A 

■'-  '■"-■ 

51!  Deg. 

513 

Deg. 

5U  D«a. 

TIIAVKUSE    TAnLl\ 


79 


5 
% 

2 
51 

38  Deg. 

38i  Deg. 

38^  Deg. 

381  Deg. 

1 
O 

I 

n 
o 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

40.19 

31.40 

40.05 

31.57 

39.91 

31.75 

39.77 

31.92 

51 

62 

40.98 

32.01 

40.84 

32.19 

40.70 

32.37 

40.65 

32.. 55 

52 

53 

41.76 

32.63 

41.62 

32.81 

41.48 

32.99 

41.33 

33.17 

53 

54 

42.55 

33.25 

42.41 

33.43 

42.26 

33.62 

42.11 

33.80 

54 

55 

43.34 

33.86 

43.19 

34.06 

43,04 

34.24 

42.89 

34.43 

55 

56 

44.13 

34.48 

43.98 

34.67 

43.83 

34.86 

43.67 

35.05 

56 

57 

44.92 

35.09 

44.76 

35.29 

44.61 

35.48 

44.45 

35.68 

57 

58 

45.70 

35.71 

45.65 

35.91 

45.39 

36.11 

45.23 

36.30 

58 

59 

46.49 

36.32 

46.33 

36.53 

46.17 

.36.73 

46.01 

36.93 

59 

60 
61 

47.28 

36.94 

47.12 

37.16 

46.96 

37.36 

46.79 

37.56 

60 

48.07 

37.66 

47.90 

37.76 

47.74 

37.97 

47.57 

38.18 

61 

62 

48.86 

38.17 

48.69 

38.38 

48.52 

38.60 

48.35 

38.81 

62 

63 

49.64 

38.79 

49.47 

39.00 

49.30 

39.22 

49.13 

39.43 

63 

64 

50.43 

39.40 

50.26 

39.62 

50.09 

39.84 

49.91 

40.06 

64 

65 

51.22 

40.02 

51.05 

40.24 

60.87 

40.46 

50.69 

40.68 

65 

66 

52.01 

40.63 

51.83 

40.86 

51.65 

41.09 

51.47 

41.31 

66 

67 

62.80 

41.25 

52.62 

41.48 

52.43 

41.71 

52.25 

41.94 

67 

68 

53.58 

41.86 

53.40 

42.10 

.53.22 

42.33 

53.03 

42.66  1  68  1 

69 

54.37 

42.48 

54.19 

42.72 

64.00 

42.95 

,53.81 

43.19,   69  1 

70 
71 

55.16 

43.10 

54.97 

43.34 

54.78 

43.58 
44.20 

.54.. 59 

43.81 

70 

55.95 

43.71 

55.76 

43.96 

65.. 57 

55.37 

44  44 

71 

72 

56.74 

44.33 

56.54 

44.67 

56.35 

44.82 

56.15 

45  07  1  72 1 

73 

57.52 

44.94 

57.33 

45.19 

57.13 

45.44 

.56.93 

45.69 

73 

74 

58.31 

45.56 

58.11 

45.81 

67.91 

46.07 

57.71 

46.32 

74 

75 

.59.10 

46.17 

58.90 

46.43 

58.70 

46.69 

.58.49 

46.94 

75 

76 

59.89 

46.79 

69.68 

47.05 

59.48 

47.31 

69.27 

47.57 

76 

77 

00.68 

47.41 

60.47 

47.67 

60.26 

47.93 

60  05 

48.20 

77 

78 

61.46 

48.02 

61.25 

48.29 

61.04 

48.56 

60  83 

48.82 

78 

79 

62.25 

48.64 

62.04 

48.91 

61.83 

49.18 

61.61 

49.45  1   79 

80 
81 

63.04 

49.25 

62.83 

49.. 53 

62.61 

49.80 

62.39 

60.07  1   80 

63.83 

49.87 

63.61 

.50.15  i 

63.39 

50.42 

63.17    60.70  1   81 

82 

64.62 

50.48 

64.40 

50.77  i 

64.17 

51.05 

63.95    51.33  1   82 

83 

65.40 

51.10 

65.18 

51.38  i 

64.96 

51.67 

64.73 

61.95  !   83  1 

84 

66.19 

51.72 

65.97 

.52.00  ' 

65.7^ 

.52.29 

65.51 

52.. 58 

84 

85 

66.98 

52.33 

66.75 

.52.62 

66.52 

62.91 

66.29 

63.20 

85 

86 

67.77 

52.95 

67.54 

.53.24 

67.30 

63.54 

67.07 

53.83 

86 

87 

68.56 

53.56 

68.32 

53.86  ' 

68.09 

54.16 

67.85 

54.46 

87 

88 

69.34 

54.18 

69.11 

54.48  ; 

68.87 

.54.78 

68.63 

55.08 

88 

89 

70.13 

54.79 

69.89 

55.10  1 

69.65 

.56.40 

69.41 

55.71 

89 

90 
91 

70.92 

55.41 

70.68 

.55.72  : 

70.43 

56.03 

70.19 

66.33 

90 
91 

71.71 

56.03 

71.46 

56.34  i 

71.22 

56.66 

70.97 

50.96 

92 

72.50 

56.64 

72.25 

56.96  : 

72.00 

67.27 

71.75 

57.68 

92 

93 

73.28 

.57.26 

73.03 

57.58 

72.78 

57.8-9 

72.53 

.58.21 

93 

94 

74.07 

57.87 

73.82 

58.19 

73.57 

68.52 

73.31 

58.84 

94 

95 

74.86 

58.49 

74.61 

.58.81     74.35 

59.14 

74.09 

59.46  1 

95 

96 

75.65 

59.10 

75.39 

59.43     75.13 

59.76 

74.87 

60.09 

96 

97 

76.44 

59.72 

76.18 

60.05     75.91 

60.33 

75.65 

60.71 

97 

98 

77.22 

60.. 33 

76.96 

60.67     76.70 

61.01 

76.43 

61.34 

98 

99 

78.01 

60.95 

77.75 

61.29     77.48 

61.63 

77.21 

61.97 

99 

100 

i 

S 

X 

1 

78.80 

61.57 

78.53 

61.91     78.26 

62.25 

77.99 

62.59 

]  00 

s 

c 

5 

Dep. 

Lat. 

Dep. 

Lat. 

!                  11 

Dep.  1    Lat.    j 

Dep. 

Lat.  { 

1 

52  Deg. 

51 J  Dog. 

.-,iu 

Jeer.         1; 

5UI 

)eg.      i 

i 

80 


TRAVERSE    TABLB. 


TRAVEUSK    TAJILE. 


8J 


tl                           11                           <         \ 

1" 

39  Deg. 

391  Deg. 

39^  Deg. 

39J  Deg. 

D 
^ 

3 
o 
n 

~5T 

Lat.       Dep. 
39.63    32.10 

Lat. 

Dep. 

Lat. 
39.35 

Dep. 
32.44 

Lat. 
39.21 

Dep. 
32.6; 

s 
"51 

39.49 

32.27 

52 

40.41     32.72 

40.27 

32.90 

40.12 

33.08 

39 .  9S 

33.25 

52 

53 

41.19    33.35 

41   04 

33.53 

40.90 

.33.71 

40.75 

33.89 

53 

G4 

41.97    33.98 

41,82 

34.17 

41.67 

34.35 

41.52 

34.. 53 

54 

56 

42.74    3-1.  61  ; 

42.59 

34.80 

42.44 

34.98 

42.29 

.35.17 

55 

66 

43.52  ■•  35.24  i 

43.37 

35.43 

43.21 

35.62! 

43.06 

35.81 

56 

57 

44. .30    35.87  i 

44.14 

36.06 

43.98 

36.26  1 

43.82 

36.45 

57 

58 

45.07  1  36.50 

44.91 

36.70  1 

44.75 

36.89  1 

44.59 

37.09 

58 

59 

45.85  1  37.13  '■ 

45.69 

^7.33  1 

45.53 

37.53  1 

45.36 

37.73 

59 

60 

43.63!  37.76  \ 

46.46 
47.24 

37.96! 
38.60 

46.30 
47.07 

38.16  1 

48.13 

38.37 

60 
61 

47.41  !  38.39  1 

38.80 

46.90 

39.01 

62 

4S.18    39.02 

48.01 

39.23 

47.  S4 

39.44 

47.67 

39.65 

62 

63 

48.96    39.65 

48.79 

39.86 

48.61 

40.07 

48.44 

40.28 

63 

64 

49.74 

40.28 j 

49.56 

40.49 

49.38 

40.71 

49.21 

40.92 

64 

65 

50.51 

40.91  1 

50.34 

41.13 

.50.16 

41.35! 

49.97 

41. .56 

65 

66 

51.29 

41.54  1 

51.11 

41.76 

.50.93 

41.981 

50.74 

42.20 

66 

67 

52.07 

42.16 

51.88 

42.39 

51.70 

42.62! 

51.51 

42.84 

67 

68 

52 .  85 

42.79- 

52.66 

43.02 

52.47 

43.25  1 

52.28 

43.48 

08 

69 

53.52 

43.42  1 

.53.43 

43.66 

.53.24 

43.89 

53.05 

44.12 

69 

70 

.'■)4.40 

44.05  ' 

54.21 

44.29 

54.01 

44.5.3, 

53.82 

44.76 

70 

71 

55.18|  44.08  1 

54.98 

44.92 

.54.79 

45.16' 

.54.59 

45.40 

71 

72 

55.95    45.31 

55.70 

45.55 

55.56 

45.80 

55.36 

46.04 

72 

73 

.56.73 

45.94; 

56.53 

46.19 

56.33 

46.43 

56.13 

46.68 

73 

74 

57.51 

46.57  1 

.57.31 

46.82 

57.10 

47.07 

56.89 

47.32 

74 

75 

58.29 

47.20  1 

58 .  08 

47.45 

57.87 

47.71 

57.66 

47.96 

75 

76 

.59.00 

47.83  1 

58.85 

48.09 

58.64  J48..34 

58.43 

48.60 

76 

77 

59 .  84 

48.46  1 

59.63 

48.72 

59.42  I  48.98 

,59.20 

49.24 

77 

78 

60.62 

49.09 

00.40 

49.35 

60.19 

49.61 

59.97 

49.88 

78 

79 

61.39 

49.72 

61.18 

49 .  98 

00.96 

50.25 

160.74 

.50.. 52 

79 

80 
81 

62.17| 50.35] 

61.95 
62.73 

50.62 
51.25' 

61.73 
62.. 50 

.50.89 

161.51 

51.16 
51.79 

80 

62.95    50.97 

51.52 

; 62.28 

81 

82 

63.73    51.60 

63.50 

51.88 

63.27  1.52.16 

63.04 

52.43 

82 

83 

64..50I  52.23 

64.27 

52»51 

64.04  1-52.79 

! 63.81 

53.07 

83 

84 

65.28  1  52.86 

65.05 

53.15 

64.82  1.53.43 

64.58 

53.71 

84 

85 

66.06    .'=,3.49  1 

65.82 

.53.78 

65.59 

.54.07 

65.35 

.54.35 

85 

86 

66.83 

54.12 

66.60 

.54.41 

66.36 

64.70 

66.12 

.54.99 

86 

87 

67.61 

54.75 

67.37 

55.05 

67.13 

55.34 

66.89 

55 .  63 

87 

88 

68.39 

55.38 

68.15 

55.68 

67.90 

.55.97 

67.66 

56.27 

88 

89 

69.17 

56.01 

68.92 

56.32 

68.67 

66.61 

68.43 

.56.91 

89 

90 
91 

69.94 

56 .  64 

69.70 

.56.94 

69.45 

70.22 

.57.25 

69.20 

57.. 55 

90 

70 .  72 

57.27 

70.47 

57.. 58 

57.88 

69.96 

.58.19 

91 

92 

71.50 

57.90 

71.24 

58.21 

70.99 

58.52 

1 70.73 

.58.83 

92 

93 

72.27!  58.. 53 

72.02 

58.84 

71.76 

59.16 

i  71.50 

.59.47 

93 

94 

73.05 

59.16 

72.79 

59.47 

72.53 

59.79 

' 72.27 

60.11 

94 

95 

73.83 

59.79 

73.57 

60.11 

73.30 

60.43 

; 73.04 

60.75 

95 

96 

74.61 

60.41 

74.34 

60.74 

74.08 

61.06 

173.81 

61.39 

90 

97 

75.38 

61.04 

75.12 

61.37 

74.85 

61.70 

74.58 

62.03 

97 

98 

76.16 

61.67 

75.89 

62.01 

75.62 

62.34 

75.35 

62.66 

98 

99 

76.94 

62.30 

76.66 

62.64 

76.39 

62.97 

76.12 

63.30 

99 

100 

77.71 

62.93 

77.44 

63.27 

77.16 

63.61 

76.88 

63.94 

100 

Dep. 

Lat. 

Dep.  1    Lat. 

Dep. 

1  i.t. 

Dep. 

1    Lat. 

6 
1 

0 

1 

i       51 

Deg. 

501 

Deg. 

50i 

Deg 

50i 

Deg. 

82 


TRAVERSE    TABLE 


% 

3 
o 
a 

40  Deg. 

40J  Deg. 

40i  Deg. 

401  Deg. 

5 

Lat.      Dep. 
~0:77      0.64 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep.  ' 

0.76 

0.65 

0.76 

0.65 

0.76 

0.65 

1 

2 

1.53      1.29 

1.53 

1.29 

1..52 

1.30 

1..52 

1.3! 

2 

3 

2.30 

1.93 

2.29 

1.94 

2.28 

1.95 

2.27 

1.96 

3 

4 

3.(»6 

2.57 

3.05 

2.58 

3.04 

2.60 

3.03 

2.61       4 

5 

3.83 

3.21 

3.82 

3.23 

3.80 

3.25 

3.79 

3.26       6 

6 

4.60 

3.86 

4.58 

3.88 

4.56 

3.90 

4.55 

3-92 

6 

7 

5.36 

4.50 

5.34 

4.52 

5.32 

4.55 

5., 30 

4.57 

7 

8 

6.13 

5.14 

6.11 

5.17 

6.08 

5 .  20  1 

6.06 

5.  22 

8 

9 

6.89 

5.79 

6.87 

5.82 

6.84 

5.84 

6.82 

5.87 

9 

10 

7.66 

6.43 

7.63 

6.46 

7.60 

6.49 

7.. 58 
8.33 

6.53 
7.18 

10 
11 

11 

8.43 

7.07 

8.40 

7.11 

8.36 

'  7.14 

12 

9.19 

7.71 

9.16 

7.75 

9.12 

7.79 

9.09 

7.83 

12 

13 

9.96 

8.36 

9.92 

8.40 

9.89 

8.14 

9.85 

8.49 

13 

14 

10.72 

9.00 

10.69 

9.05 

10.65 

9.09 

10.61 

9.14 

14 

15 

11.49 

9.64 

11.45 

9.69 

11.41 

9.74  1 

11.36 

9.79 

15 

16 

12.26 

10.28 

12.21 

10.34 

12.17 

10.39 

12.12 

10.44 

16 

17 

13.02 

10.93 

12.97 

10.98 

12.93 

11.04 

12.88    n.io 

17 

18 

13.79 

11.57 

13.74 

11.63 

13.69 

11.69 

13.64 

11.75 

18 

19 

14.55 

12.21 

14.50 

12.28 

14.45 

12.34  i 

14.39 

12.40 

19 

20 

15., 32 

12.86 

15.26 

12.92 

15.21 

12.99 

15.15 

13.06 

20 

21 

10.09 

13.50 

16.03 

13.57 

15.97 

13.64 

15.91 

13.71 

21 

22 

16.85 

14.14 

16.79 

14.21 

16.73 

14.29 

16.67 

14.36 

22 

23 

17.62 

14.78 

17.55 

14.86 

17.49 

14.94 

17.42 

\5.01 

23 

24 

18.39 

15.43 

18.32 

15.51 

18.25 

15.59  1 

18.18 

15.67 

24 

25 

19.15 

16.07 

19.08 

16.15 

19.01 

16.24  1 

18.94 

16.32 

25 

26 

19.92 

16.71 

19.84 

16.80 

19.77 

16.89 

19.70 

16.97 

26 

27 

20.68 

17.36 

20.61 

17.45 

20.53 

17. .54  1 

20.45 

17.62 

27 

28 

21.45 

18.00 

21.37 

18.09 

21.29 

18.18 

21.21 

18.28 

28 

29 

22.22 

18.64 

22.13 

18.74 

22.05 

18.83 

21.97 

18.93 

29 

30 

22.98 

19.28 

22.90 

19.38 

22.81 

19.48 

22.73 
23.48 

19.. 58 

30 

31 

23.75 

19.93 

23.66 

20.03 

23.. 57 

20.13 

20.24     31 

32 

24.51 

20.. 57 

24.42 

20.68 

24.33 

2Q.78 

24.24 

20.89     32 

33 

25.28 

21.21 

25.19 

21.32 

25.09 

21.43 

25.00 

21.54     .33 

34 

26.05 

21.85 

25.95 

21.97 

25.85 

22.08 

25.76 

22.19     34 

35 

26.81 

22.50 

26.71 

22.61 

26.61 

22.73 

26.51 

22.85     35 

30 

27.58 

23.14 

27.48 

23.26 

27.37 

23.38 

27.27 

23.50  j   .36 

37 

28.34 

23.78 

28.24 

23.91 

28.13 

24.03 

28.03 

24.15 

37 

38 

29.11 

24.43 

29.00 

24.. 55 

28.90 

24.68 

28.79 

24.80 

38 

39 

29.88 

25.07 

29.77 

25.20 

29.66 

25.33 

29.54 

25.46 

39 

40 

30.64 

25.71 

30.53 

25.84 

30.42 

25.98 

30.30 

26.11 

40 

41 

31.41 

26.35 

31.29 

26.49 

31.18 

26.03 

31.06 

26.76 

41 

42 

32.17 

27.00 

32.06 

27.14 

31.94 

27.28 

31.82 

27.42 

42 

43 

32.94 

27.64 

32.82 

27.78 

32.70 

27.93 

32.58 

28.07 

43 

44 

33.71 

28.28 

33.58 

28.43 

33.46 

28.58 

33.33 

28.72 

44 

45 

34.47 

28.93 

34.35 

29.08 

34.22 

29.23 

34.09 

29.37 

45 

46 

35.24 

29.57 

35 . 1 1 

29.72 

34.98 

29.87 

34.85 

30.03 

46 

47 

36.00 

30.21 

35.87 

30.37 

35.74 

30.52 

35.61 

30.68 

47 

48 

36.77 

30.85 

36.64 

31.01 

36.. 50 

31.17 

36.36 

31. .33 

48 

49 

37.54 

31.50 

37.40 

31.66 

37.26 

31.82 

37.12 

31.99 

49 

50 

.38.30 

32.14 

^.16^ 

32.31 

38.02 

32.47 

37.88 

32.64 

Jl 

a>' 
o 

C 

a 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

c 

2 

50  Deg. 

49|  Deg. 

49h   Deg. 

49^  Deg. 

TRAVERSE    TABLE. 


83 


o 
o 

40  Deg. 



40i  Deg. 

40^  Deg.   1 

401  Deg. 

1 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

39.07 

32.78 

38.92 

32.95 

38?/8' 

33.12 

38.64 

33.29 

52 

39.83 

.33.42 

.39.69 

.33.60 

39.. 54 

33.77 

39.39 

33.94 

52 

53 

40.60 

34.07 

40.45 

34.^4 

40.30 

34.42 

40.15 

34.60 

53 

5-1 

41.37 

34.71 

41.21 

34.89 

41.06 

35.07 

40.91 

35.25 

54 

55 

42.13 

.35.35 

41.98 

35.54 

41.82 

35.72 

41.67 

35.90 

55 

56 

42.90 

36.00 

42.74 

36.18 

42.58 

.36.37 

42.42 

36.55 

56 

57 

43.66 

36.64 

43.50 

36.83 

43.34 

37.02 

43.18 

37.21 

57 

58 

44.43 

37.28 

44.27 

37.48 

44.10 

37.67 

43.94 

37.86 

58 

59 

45.20 

37.92 

45.03 

38.12 

44.86 

38^.32 

44.70 

38.51 

59 

60 
61 

45.96 

38.57 

45.79 

38.77 

45.62 

38.97 

45.45 

39.17 

60 

46.73 

39.21 

46.56 

39.41 

46.38 

39".  62 

46.21 

39.82 

61 

62 

47.49 

39.85 

47.32 

40.06 

47.15 

40.27 

46.97 

40.47 

62 

63 

48 .  26 

40.50 

48.08 

40.71 

47.91 

40.92 

47.73 

41.12 

63 

64 

49.03 

41.14 

48.85 

41.35 

48.67 

41.. 56 

48.48 

41.78 

64 

65 

49 .  79 

41.78 

49.61 

42.00 

49.43 

42.21  ' 49.24 

42.43 

65 

66 

50.56 

42.42 

50,37 

42.64 

.50.19 

42.86  1 
43.51 

50.00 

43.08 

66 

67 

51.32 

43.07 

51.14 

43.29 

50.95 

50.76 

43.73 

67 

6S 

52 .  09 

43.71 

51.90 

43.94 

51.71 

44.16] 

51.51 

44.39 

68 

69 

52.86 

44.. 35 

52.66 

44.58 

52.47 

44.81 

.52.27 

45.04 

69 

70 
71 

53.62 

45.00 

53.43 

45.23 

53.23 

45.46  53.03 

45.69 

70 

.54.39 

45.64 

.54.19 

45.87 

53.99 

46.11  53.79 

46.35 

71 

72 

.55.16 

46.28 

,54.95 

46 .  52 

54.75 

46.76  ;  54.54 

47.00 

72 

73 

55.92 

46.92 

55.72 

47.17 

55.51 

47.41  i  55.30 

47.65 

73 

74 

56.69 

47.. 57 

56.48 

47.81 

56.27 

48.06 

56.06 

48.. 30 

74 

75 

57.45 

48.21 

57.24 

48.46 

57.03 

48.71 

.56.82 

48.96 

75 

76 

58.22 

48.85 

58.01 

49 . 1 1 

57.79 

49.36 

.57.57 

49.61 

76 

77 

.58 .  99 

49.49 

58.77 

49 .  75 

58.55 

50.01 

.58.33 

50.26 

77 

78 

59 .  75 

50.14 

59,53 

50.40 

59.31 

.50.66 

,59.09 

.50.92 

78 

79 

60.52 

50.78 

60.30 

51.04 

60.07 

51.31 

.59.85 

51.57 

79 

80 
8 1 

61.28 

51.42 

61.06 

51.69 

60.83 

51.96 

60.61 

52.22 

80 

62.05 

52.07 

61.82 

.52.34 

61.59 

52.61 

61.36 

52.87 

81 

82 

62.82 

52.71 

62.59 

.52 .  98 

62.35 

53.25 

62.12 

53.53 

82 

83 

63.. 58 

53.35 

63.35 

.53.63 

63.11 

.53.90 

62.88 

.54.18 

83 

84 

64.35 

53.99 

64.11 

.54.27 

63.87 

54.55 

63.64 

54.83 

84 

85 

65.11 

.54.64 

64.87 

.54.92 

64  63 

55.20 

64.39 

55.48;  85  1 

86 

65.88 

.55.28 

65.64 

55.. 57 

65  39 

55.85 

65.15 

56.14' 

86 

87 

66.65 

.55.92 

66.40 

56.21 

66  16 

56.50 

65.91 

56.79 

87 

88 

67.41 

56.57 

67.16 

56.86 

66  92 

57.15 

66.67 

57.44 

88 

89 

68.18 

.57.21 

67.93 

57.50 

67  68 

57.80 

67.42 

58.10 

89 

90 
91 

68 .  94 

57.85 

68.69 

58.15 

68.44 

58.45 

68.18 

58.75 
59.40 

90 
91 

69.71 

58.49 

69.45 

58.80 

69.20 

59.10 

68.94 

92 

70.48 

59.14 

70.22 

59 .  44 

69.96 

59.75 

69.70 

60.05 

92 

93 

71.24 

.59.78 

70.98 

60.09 

70.72 

60.40 

70.45 

60.71 

93 

94 

72.01 

60.42 

71.74 

60.74 

71.48 

61.05 

71.21 

61.36 

94 

95 

72.77 

61.06 

72.51 

61.38 

72.24 

61.70 

71.97 

62.01 

95 

96 

73.54 

61.71 

73.27 

62.03 

73.00 

63.35 

72.73 

62.66 

96 

97 

74.31 

62.35 

74.03 

62.67 

73.76 

63.00 

73.48 

63.32 

97 

98 

75.07 

62.99 

74.80 

63.32 

74.52 

63.65 

74.24 

63.97 

98 

99 

75.84 

63.64 

75 .  56 

63.97 

75.28 

64.30 

75.00 

64.62 

99 

ioe 

o 

c 

.2 

76.60 

64.28 

76.32 

64.61 

76.04 

64.94 

75/r6_ 

65.28 

100 

Dep. 

Lat. 

Dep. 

Lat.. 

Dep. 

Lat. 

Dep. 

Lat. 

o 

50 

Deg. 

49 1  Deg. 

49.\  Deg. 

49i  Deg. 

84 


TRAVERSE    TABLE. 


! 

41  Deg. 

4U  Deg. 

1      4U-  Deg. 

i 

4I|  Deg 

o 

s 
n 

~1 

Lat.  1  Dep. 

Lat. 
0.75 

Dep. 

Lat. 

Dep. 
0.66 

Lat 
0.75 

Dep. 
~0T67 

0.75      0.66 

!    0.75 

2 

1.51 !     1.31 

1.50 

1.32 

1.50 

1.33 

1.49 

1.33 

2 

3 

2.26       1.97 

2.26 

1.98 

2.25 

1.99 

2.24 

2.00 

3 

4 

3.02      2.62 

3.01 

2.64 

3.00 

2.65 

2.98 

2.06 

4 
5 

5 

3.77      3.28 

3.76 

3.30 

3.74 

3.31 

3.73 

3.33 

6 

4.53!    3.94 

4.51 

3.96 

4.49 

3.98 

4.48 

4.00 

6 

7 

5.28  1    4.59 

5.26 

4.62 

5.24 

4.64 

5.22 

4.66 

7 

8 

6.04!    5.25 

6.01 

5.27 

5  99 

5.30 

5.97 

5.33 

8 

9 

6.79^    5.90 

6.77 

5.93 

6.74 

5.96 

6.71 

5.99 

9 

10 
11 

7.55      6.56 

8.30,    7.2^ 

7.52 

6.59 

7.49 

6.63 

7.46 
8.21 

6.66 
7.32 

10 
11 

8.27 

7.25 

8.24 

7.29 

12 

9.06  i    7.87 

9.02 

7.91 

8.99 

7.95 

8.95 

7.99 

12 

13 

9.81  i    8.53 

9.77 

8.57 

9.74 

8.61 

9.70 

8.66 

13 

14 

10.57      9.18 

10.53 

9.23 

10.49 

9.28 

10.44 

9.32 

14 

15 

11.32      9.84 

11.28 

9.89 

11.23 

9.94 

11.19 

9.99 

15 

16 

12.08     10.. 50 

12.03 

10.55 

11.98 

10.60 

11.94 

10.65 

16 

17 1  12.83     11.15  1 

12.78 

11.21 

12.73 

11.26 

12.68 

11.32 

17 

18     13.58     11.81 

13.. 53 

11.87 

13.48 

11.93 

13.43 

11.99 

L8 

19     14.34    12.47! 

14.28 

12.. 53 

14.23 

12.59 

14.18 

12.65 

19 

20  15.09     13.12! 

21  [  15.85     13.78 

15.04 

13.19 

14.98 

13.25 

14.92 

13.32 

_20 
21 

15.79 

13.85 

15.73 

13791 

15.67 

13.98 

22     16.60    14.43 

16.54 

14.51 

16.48 

14.58 

16.41 

14.65 

22 

23     17.36     15.09 

17.29 

15.16 

17.23 

15.24 

17.16 

15.32 

23 

24     18.11     15.75  ' 

18.04 

15.82 

17.97 

'5.90 

17.91 

15.98 

24 

25 

18.87    16.40 

18.80 

16.48 

18.72 

16.. 57 

18.65 

16.65 

25 

26 

19.62     17.06 

19.55 

17.14 

19.47 

17.23 

19.40 

17.31 

26 

27 

20. .38     17.71 

20.30 

17.80 

20.22 

17.89; 

20.14 

17.98 

27 

28 

21.13     18.37 

21.05 

18.46 

20.97 

18.. 55 

20.89 

18.64 

28 

29 

21.89     19.03 

21.80 

19.12 

21.72 

19.22 

21.64 

19.31 

29 

30 

22.64     19.68 

22.56 

19.78 

22.47 

19.88 

22.38 

19.98 

30 

"31 

23.40    20.34 

23.31 

20.44 

23.22' 

20.. 54 

23.13 

20.64 

31 

32 

24.15    20.99 

24.06 

21.10 

23.97 

21.20 

23.87 

21.31 

32 

33 

24.91     21.65 

24.81 

21.76 

24.72 

21.87 

24.62 

21.97 

33 

34 

25.66  ,22.31 

25.56 

22.42 

25.4JB 

22.. 53 

25.37 

22.64 

34 

35 

26.41    22.96 

26.31 

23.08 

26.21 

23.19 

26.11 

23.31 

35 

36 

27.17    23.62 

27.07 

23.74 

26.96 

23.85 

26.86 

23.97 

36 

37 

27.92    24.27 

27.82 

24.40 

27.71 

24.52 

27.60 

24.64 

37 

38 

28.68  124.93 

28.57 

25.06 

28.46 

25.18 

28.35 

25.30 

38 

39 

29.43  '25.59 

29.32 

25.71 

29.21 

25.84 

29.10 

25.97 

39 

40 
41 

30.19  126.24 

30.07 

26.37 

29.96 
30.71 

26.50 

27.17 

29.84 
30.. 59 

26.64 
27.30 

40 
41 

30.94    26.90 

30.83 

27.03 

42 

31.70  127.55 

31.58 

27.69 

31.46 

27.83 

31.33 

27.97 

42 

43 

32.45  128.21 

32.33 

28.35 

.32.21 

28.49 

32.08 

28.63 

43 

44    33.21  128.87  | 

33.08 

29.01 

32 .  95 

29.16 

32.83 

29.30 

44 

45 

33.96  129.52 

33.83 

29.67 

33.70 

29.82 

33.57 

29.97 

45 

46 

34.72  130.18 

34.58 

30.33 

34,45 

30.48 

34.32 

.30.63 

46 

47 

35.47  130.83 

35.34 

30.90 

35.20 

31.14 

.35.06 

3 1 .  30 

47 

48  136.23  ! 31.49  ; 

36.09 

31.65; 

35.95 

31.81 

35.81 

31.96 

4S 

49 

36.98    32.15  1 

36.84 

32.31 

36.70 

.32.47 

36.56 

32 .  63 

49 

50 

"i 
S 

.2 

Q 

! 

37.74  j  32.80 

.37.59 

32.97 

37.45 

.33.13 

37.30 

33.29 

_50 

6 
o 

c 

CO 

Dep.      Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

49  Deg, 

481  Deg. 

48i  Deg. 

48i  Deg. 

TRAVERSE    TABLE. 


85 


3 

s 

51 

41  Deg. 

4U  Deg. 

4li  Deg. 

411  Deg. 

3 

Lat. 

Dep. 

Lat.       Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

33.49 

33.46 

.38.34 

33.63 

38.20 

33.79 

38.05 

33.96     51  1 

52 

39.24 

34.12 

39.10 

34.29 

38.95 

34.46 

.38.79 

34.63 

52 

53 

40.00 

34.77 

39.85 

34.95 

.39.69 

35.12 

39.54 

35.29 

53 

54 

40.75 

35.43 

40.60 

35.60 

40.44 

35.78 

40.29 

35.96 

54 

55 

41.51 

36.08 

41.35 

36.26 

41.19 

36.44 

41.03 

36.62 

55 

56 

42.26 

36.74 

42.10 

36.92 

41.94 

37.11 

41.78 

37.29 

56 

57 

43.02 

37.40 

42.85 

37.58 

42.69 

37.77 

42.53 

37.96 

57 

58 

43.77 

38.05 

43.61 

38.24 

43.44 

38.43 

43.27 

.38.62 

58 

59 

44.53 

38.71 

44.36 

38.90 

44.19 

39.09 

44.02 

39.29 

59 

00 
61 

45. 2S 

39.36 

45.11 

39.56 

44.94 

39.76 

44.76 

39.95 

60 
61 

46.04 

40.02 

45.86 

40.22 

45.69 

40.42 

45.51 

40.62 

62 

46.79 

40.68 

46.61 

40.88 

46.44 

41.08 

46.26 

41.28 

62 

63 

47.55 

41.33 

47.37 

41.54 

47.18 

41.75 

47.00 

41.95 

63 

64 

4S.30 

41.99 

48.12 

42.20 

47.93 

42.41 

47.75 

42.62 

64 

65 

49.06 

42.64 

48.87 

42.86 

48.68 

43.07 

48.49 

43.28 

65 

66 

49.81 

43.30 

49.62 

43.52 

49.43 

43.73 

49.24 

43.95 

66 

87 

50.57 

43.90 

50.37 

44.18 

50.18 

44.40 

49.99 

44.61 

67 

68 

51.33 

44.61 

51.13 

44.84 

.50.93 

45.06 

50.73 

45.28 

68 

69 

52.07 

45.27 

51.88 

45.49 

51.68 

45.72 

51.48 

45.95 

69 

70 
71 

52.83 
.53.58 

45.92 
46.58 

52.63 

46.15 

.52.43 

46.38 

52.22 

46.61 

70 

53.38 

46.81 

53.18 

47.05 

52.97 

47.28 

71 

72 

.54.34 

47.24 

54.13 

47.47 

.53.92 

47.71 

53.72 

47.94 

72 

73 

55.09 

47.89 

.54.88 

48.13 

54.67 

48.37 

54.46 

48.61 

73 

74 

.55.85 

48.. 55 

55.64  i  48.79, 

.55.42 

49.03 

55.21 

49.28 

74 

75 

56.60 

49.20 

56.39 

49.45 

56.17 

49.70 

55.95 

49.94 

75 

76 

57.36 

49.86 

57.14 

.50.11 

56.92 

50.36 

56.70 

.50.61 

76 

77 

.58.11 

50.52 

57.89 

50.77 

57.67 

51.02 

57.45 

51.27 

77 

78 

58.87 

51.17 

.58.64 

51.43 

58.42 

51.68 

58.19 

51.94 

78 

79 

59.62 

51.83 

59.40 

52.09 

59.17 

52.35 

58.94 

52.60 

79 

80 

81 

60.38 

.52.48 

60.15 

52 .  75 

.59.92 

53.01 

59.68 

53.27 

80 

IT 

61.13 

53.14 

60.90 

53.41 

60.67 

53.67 

60.43 

53.94 

82 

61.89 

.53.80 

61.65 

.54.07 

61.41 

.54.33 

61.18 

54.60 

82 

83 

62.64 

54.45 

62.40 

54.73 

62.16 

.05.00 

61.92 

.55.27 

83 

84 

63.40 

55.11 

63.15 

55.38 

62.91 

55.66 

62.67 

55.93 

84 

85 

64.15 

55.76 

63.91 

56.04 

63.66 

56.32 

63.41 

56.60 

85 

86 

64.90 

56.42 

64.66 

56.70 

64.41 

56.99 

64.16 

57.27 

86 

87 

65.66 

57.08 

65.41 

57.36 

65.16 

57.65 

64.91 

57.93 

87 

88 

66.41 

.57.73 

66.16 

58.02 

65.91 

58.31 

65.65 

.58.60 

88 

89 

67.17 

58.39 

66.91 

,58.68 

66.66 

58.97 

66.40 

59.26 

89 

90 
91 

67.92 

59.05 
.59.70 

67.67 

59.34 

67.41 

59.64 
60.30 

67. 15  159.93 

90 

68.68 

68.42 

60.00 

68.15 

67.89 

60.60 

91 

92 

69.43 

60.36 

69.17 

60.68 

68.90 

60.96 

68.64 

61.26 

92 

93 

70.19  1  61.01 

69.92 

61.32 

69.65 

61.62 

69.38 

61.93 

93 

94 

70.94  161.67 

70.67 

61.98 

70.40 

62.29 

70.13 

62.59 

94 

95 

71.70 

62.33 

71.43 

62.64 

71.15 

62.95 

70.88 

63.26 

95 

96 

72.45 

62.98 

72.18 

63.. 30 

71.90 

63.61 

71.62 

63.92 

96 

97 

73.21 

63.64 

72.93 

63.96 

72.65 

64.27 

72.37 

64.59 

97 

98 

73.96 

64.29 

73.68 

64.62 

73.40 

64.94 

73.11 

65,26 

98 

99 

74.72 

64.95 

74.43 

65.28 

74.15 

65.60 

73.86 

65.92 

99 

100 

1 
.2 

Q 

75.47 i  65.61 

75.18 

65.93 

74.90 

66.26 

74.61 

66.. 59 

100 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

D«p. 

Lat. 

s 

c 
.2 

49  Deg. 

48|  Deg. 

48^  Deg. 

48i  Deg. 

86 


TKAVEllSE    TABLE. 


s 

42  Deg. 

1 
42k  Deg. 

1 
42i  Deg, 

421  Deg. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

1 

0.74 

0.67 

0.74 

0.67 

0.74 

0.68 

0.73 

0.68 

1 

2 

1.49 

1.34 

1.48 

1.34 

1.47 

1.35 

1.47 

1.36  1 

2 

3 

2.23 

2.01 

2.22 

2.02 

2.21 

2.03 

2.20 

2.04! 

3 

4 

2.97 

2.68 

2.96 

2.69 

2.95 

2.70 

2.94 

2.72' 

4 

ft 

3.72 

3.35  1 

3.70 

3.36 

3.69 

3.38 

3.67 

3.39 

5 

6 

4.46 

4.01 

4.44 

4.03 

4.42 

4.05 

4.41 

4.07 

6 

7 

5.20 

4.68 

5.18 

4.71 

5.16 

4.73 

5.14 

4.75 

7 

8 

5.95 

5.35 

5.92 

5.38 

5.90 

5.40 

5.87 

5.43 

8 

9 

6.69 

6.02 

6.66 

6.05 

6.64 

6.08 

6.61 

6.11 

9 

10 
"  11 

7.43 

6.69 

7.40 

6.72 

7.37 

6.76 

7.34 

6.79 

10 

8.17 

7.36 

8.14 

7.40 

8.11 

7.43  1 

8.08 

7.47 

11 

12 

8.92 

8.03 

8.88 

8.07 

8.85 

8.11 

8.81 

8.15 

12 

13 

9.66 

8.70 

9.62 

8.74 

9.58 

8.78 

9.55 

8.82 

13 

H 

10.40 

9.37 

10.36 

9.41 

10.32 

9.46 

10.28 

9.50 

14 

15 

11.15 

10.04 

11.10 

10.09 

11.06 

10.13 

11.01 

10.18 

15 

16 

11.89 

10.71 

11.84 

10.76 

11.80 

10.81  1 

11.75 

10.86 

16 

17 

12.63 

11.38 

12.58 

11.43 

12.53 

11.48  i 

12.48 

11.54 

17 

18 

13.38 

12.04 

13.32 

12.10 

13.27 

12.16 

13.22 

12.22 

18 

19 

14.12 

12.71 

14.06 

12.77 

14.01 

12.84! 

13.95 

12.90 

19 

20 

14.86 

13.38 

14.80 

13.45 

14.75 

13.51  i!  14.69 

13.58 

20 

21 

15.61 

14.05 

15.54 

14.12 

15.48 

14.19  1 

15.42 

14.25 

21 

22 

16.35 

14.72 

16.28 

14.79 

16.22 

14.86! 

16.16 

14.93 

22 

23 

17.09 

15.39 

17.02 

15.46 

16.96 

15.54  1 

16.89 

15.61 

23 

24 

17.84 

16.06 

17.77 

16.14 

17.69 

16.21  i 

17.62 

16.29 

24 

25 

18.58 

16.73 

18.51 

16.81 

18.43 

16.89 i 

18.36 

16.97 

25 

26 

19.32 

17.40 

19.25 

17.48 

19.17 

17.57, 

19.09 

17.65 

26 

27 

20.06 

18.07 

19.99 

18.15 

19.91 

18.241 

19.83 

18.33 

27 

2S 

20.81 

18.74 

20.73 

18.83 

20.64 

18.92 

20.. 56 

19.01 

28 

29 

21.55 

19.40 

21.47 

19.50 

21.38 

19.59 

21.30 

19.69 

29 

30 

22.29 

20.07 

22.21 

20.17 

22.12 

20.27 

22.03 

20.36 

30 

31 

23.04 

20.74 

22.95 

20.84 

22.86 

20.94 

22.76 

21.04 

31 

32 

23.78 

21.41 

23.69 

21.52 

23.59 

21.62 

23.50  121.72 

32 

33 

24.52 

22.08 

24.43 

22.19 

24.33 

22.29 

24.23 

22.40 

33 

34 

25.27 

22.75 

25.17 

22.86 

25.07 

22.97 

24.97 

23.08 

34 

35 

26.01 

23.42 

25.91 

23.53 

25.80 

23.65 

25.70 

23.76 

35 

36 

26.75 

24.09 

26.65 

24.21 

26.54 

24.32 

26.44 

24.44 

36 

37 

27  50 

24.76 

27.39 

24.88 

27.28 

25.00 

27.17 

25.12 

37 

38 

28.24 

25.43 

28.13 

25.55 

28.02 

25.07 

27.90 

25.79 

38 

39 

28.98 

26.10 

28.87 

26.22 

28.75 

26.35 

28.64 

26.47 

39 

40 

29.73 

26.77 

29.61 

26.89 

29.49 

27.02 

29.37 

27.15 

40 

41 

30.47 

27.43 

30.35 

27.57 

30 .  23 

27.70 

30.11 

27.83 

41 

42 

31.21 

28.10 

31.09 

28.24 

30.97 

28.37 

30.84 

28.51 

42 

43 

31.96 

28.77 

31.83 

28.91 

31.70 

29.05 

131.58 

29.19 

43 

44 

32.70 

29.44 

32.57 

29.58 

32.44 

29.73 

32.31 

29.87 

44 

45 

33.44 

30.11 

33.31 

30.26 

.33.18 

30.40 

33.04 

30.55 

45 

46 

.34.18 

30.78 

34.05 

30.93 

33.91 

31.08 

33.78 

31.22 

46 

47 

34.93 

31.45 

34.79 

31.60 

34.65 

31.75 

34.51 

31.90 

47 

48 

35.67 

32.12 

35.53 

32.27 

35.39 

.32.43 

35.25 

32.58 

48 

49 

36.41 

32.79 

36.27 

32.95 

36.13 

33.10 

35.98 

.33.26 

49 

50 

37.16 

33.46 

37.01 

33.62 

36.86 

33.78 

36.72 

33.94 

50 

s 

1 

Dcp. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

6 
'      1 

48  Deg. 

471  Deg. 

47i  Deg. 

47i  Deg. 

TRAVERSE    TABLE- 


87 


p 

3 

? 

51 

42Deg. 

42k  Deg. 

42i  Deg. 

42|  Deg. 

s 
§ 

"51 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

37.90 

34.13 

37.75 

34.29 

37.60 

34.46 

37.45 

34.62 

52 

38 .  64 

34.79 

38.49 

34.96 

38.34 

35.13 

38.18 

35.30 

52 

53 

39.39 

35.46 

39.23 

35.64 

39.08 

35.81 

38.92 

35.98 

53 

54 

40.13 

36.13 

39.97 

36.31 

39.81 

36.48 

39.65 

36.66 

54 

55 

40.87 

36.80 

40.71 

36.98 

40.55 

37.16 

40.39 

37.33 

55 

56 

41.62 

37.47 

41.45 

37.65 

41.29 

37.83  1 

41.12 

38.01 

56 

57 

42.36 

38.14 

42.19 

38.32 

42.02 

38.51 

41.86 

38.69 

57 

58 

43.10 

38.81 

42.93 

39.00 

42.76 

39.181 

42.59 

39.37 

58 

59 

43.85 

39.48 

43.67 

39.67 

43.50 

39.86  1 

43.32 

40.05 

59 

60 
"61 

44.59 

40.15 

44.41 

40.34 

44.24 

40.54  1 

44.06 

40.73 

60 
61 

45.33 

40.82 

45.15 

41.01 

44.97 

41.21  ! 

44.79 

41.41 

62 

46.07 

41.49 

45.89 

41.69 

45.71 

41.89] 

45.53 

42.09 

62 

63 

46.82 

42.16 

46.63 

42.36 

46.45 

42.56; 

46.26 

42.76 

63 

64 

47.56 

42.82 

47.37 

43.03 

47.19 

43.24 

47.00 

43.44 

64 

65 

48.30 

43.49 

48.11 

43.70 

47.92 

43.91 

47.73 

44.12 

65 

66 

49.05 

44.16 

48.85 

44.38 

48.66 

44.59 j 

48.47 

44.80 

66 

67 

49.79 

44.83 

49.59 

45.05 

49.40 

45.26 

49.20 

45.48 

67 

68 

50.53 

45.50 

50.. 33 

45.72 

50.13 

45.94 

49.93 

46.16 

68 

69 

51.28 

46.17 

51.07 

46.39 

.50.87 

46.62 

50.67 

46.84 

69 

70 
71 

52.02 

46.84 

51.82 

47.07 

51.61 
52.35 

47.29' 

51.40 

47.52 

70 
71 

52.76 

47.51 

52.56 

47.74 

47.97; 

52.14 

48.19 

72 

53.51 

48.18 

53.30 

48.41 

1.53.08 

48.64 

52.87 

48.87 

72 

73 

54.25 

48.85 

54.04 

49.08 

,53.82 

49.  y2 

53.61 

49.55 

73 

74 

54.99 

49.52 

.54.78 

49.76 

54.56 

49.99 

54.34 

50.23 

74 

75 

55.74 

50.18 

55.52 

50.43 

55.30 

50.67 

55.07 

50.91 

75 

76 

56.48 

.50.85 

56.26 

51.10 

56.03 

51.34 

55.81 

51.59 

76 

77 

57.22 

51.52 

57.00 

51.77 

56.77  152.02 

56.54 

52.27 

77 

78 

57.97 

52.19 

57.74 

52.44 

.57.51 

52.70 

:  ,57.28 

52.95 

78 

79 

58.71 

52.86 

58.48 

53.12 

58.24 

53.37 

.58.01 

.53.63 

74 

80 
81 

59.45 

53.53 

59.22 

53.79 

58.98 
59.72 

54.05 

54.72 

'58.75 

54.30 

8U 

60.19 

54.20 

59.96 

54.46 

159.48 

54.93 

81 

82 

60.94 

54.87 

60.70 

55.13 

60.46 

55.40 

■60.21 

55.66 

82 

83 

61.68 

55.54 

61.44 

55.81 

61.19 

56.07 

j 60.95 

56.34 

83 

84 

62.42 

56.21 

62.18 

56.48 

61.93 

.56.75 

61.68 

57.02 

84 

85 

63.17 

56.88 

62.92 

57.15 

62.67 

57.43 

62.42 

57.70 

85 

86 

63.91 

57.55 

63.66 

57.82 

63.41 

58.10 

63.15 

58.38 

86 

87 

64.65 

58.21 

64.40 

,58.50 

64.14 

58.78 

63.89 

.59.06 

87 

88 

65.40 

58.88 

65.14 

59.17 

64.88 

59.45 

64.62 

59.73 

88 

89 

66.14 

59.55 

65.88 

.59.84 

65.62 

60.13 

65., 35 

60.41 

89 

90 
91 

66.88 

60.22 

66.62 

60.51 

66.35  160.80 

66.09 

61.09 

90 

67.63 

60.89 

67.36 

61.19 

67.09 

61.48 

66.82 

61.77 

91 

92 

68.37 

61.56 

68.10 

61.86 

67.83 

62.15 

67.. 56 

62.45 

92 

93 

69.11 

62.23 

6S.84 

62.53 

68.57 

62.83 

168.29 

63.13 

93 

94 

69.86 

i  62.90 

69.. 58 

63.20 

69.30 

63.51 

169.03 

63.81 

94 

95 

70.60 

63.57 

70.32 

63.87 

70.04 

64.18 

169.76 

64.49 

95 

96 

71.34 

64.24 

71.06 

64.55 

70.78 

64.86 

i 70.49 

65.16 

96 

97 

72.08 

64.91 

71.80 

65.22 

71.52 

65.53 

71.23 

65.84 

97 

98 

72.83 

65.57 

72.54 

65.89 

72.25 

66.21 

71.96 

66.52 

98 

99 

73.57 

66.24 

73.28 

66.56 

72.99 

66.88 

72.70 

67.20 

99 

100 

s 

c 
1 

2 

74.31 

66.91 

74.02 

67.24 

73.73 

67.56 

73.43 

67.88 

100 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

6 
u 

a 

48  Deg. 

47|  Deg. 

47i  Deg. 

47i  Deg. 

.1 

Q 

83 


TUAVERSE    TAKLF,. 


o 

43  Deg. 

43i  Deg. 

43i  Deg. 

1 
431  Deg. 

c 

% 

a 

'  1 

Lat. 

Dep. 

Lat. 

Dep. 

0.69 

Lat. 

Dep. 

Lat. 

Dep. 

~r 

0.73 

0.68 

0.73 

0.73 

0.69 

0.72 

0.69 

2 

1.40 

1.36 

1.46 

1.37 

1.45 

1.38 

1.44 

1.33 

2 

3 

2.19 

2.05 

2.19 

2.06 

2.18 

2.07 

2.17 

2.07 

3 

4 

2.93 

2.73 

2.91 

2.74 

2.90 

2.75 

2.89 

2.77 

4 

5 

3.66 

3.41 

3.64 

3.43 

3.63 

3.44 

3.61 

3.46 

5 

6 

4.39 

4.09 

4.37 

4.11 

4.35 

4.13 

4.33 

4.15 

6 

7 

5.12 

4.77 

5.10 

4.80 

5.08 

4.82 

5.06 

4.84 

7 

8 

5.85 

5.46 

5.83 

5.48 

5.80 

5.51 

5.78 

5.53 

8 

9 

6.58 

6.14 

0.56 

6.17 

6.. 53 

6.20 

6.50 

6.22 

9 

10 

7.31 

6.82 

7.28 

6.85 

7.25 

6.88 

7.22 
7.95 

6  92 
7.61 

10 
11 

11 

8.04 

7.50 

8.01 

7.. 54 

7.98 

7.57 

12 

8.78 

8.18 

8.74 

8.22 

8.70 

8.26 

8.67 

8.30 

12 

13 

9.51 

8.87 

9.47 

8.91 

9.43 

8.95 

9.39 

8.99 

13 

14 

10.24 

9.55 

10.20 

9.59 

10.16 

9.64 

10.11 

9.68 

14 

15 

10.97 

10.23 

10.93 

10.28 

10.88 

10.33 

10.84 

10.37 

15 

16 

1 1 .  70 

10.91 

1 1 .  65 

10.96 

11.61 

11.01 

11. .56 

11.06 

16 

17 

12.43 

11.59 

12.33 

11.65 

12.33 

11.70 

12.28 

11.76 

17 

18 

13.16 

12.28 

13.11 

12.33 

13.06 

12.39 

13.00 

12.45 

18 

19 

13.90 

12.96 

13.84 

13.02 

13.78 

13.08 

13.72 

13.14 

19 

20 

1  4^63_ 

13.64 

14.57 

13.70 

14.51 

)3.77 

14.45 

13.83 

20 

21 

15.36" 

14.32 

15.30 

14.39 

15.23 

14.46 

15.17 

14.. 52 

21 

22 

16.09 

15.00 

13.02 

15.07 

15.96 

15.14 

15.89 

15.21 

22 

23 

16.82 

15.69 

16.75 

15.76 

16.68 

15.83 

16.61 

15.90 

23 

24 

17.55 

16.37 

17.48 

16.44 

17.41 

16.52 

17.34 

16.60 

24 

25 

18.28  j  17.05 

18.21 

17.13 

18.13 

17.21 

18.06 

17.29 

25 

26 

19.02 

17.73 

18.94 

17.81 

18.86 

17.90 

18.78!  1-7.98 

26 

27 

19.75 

18.41 

19.67 

18  50 

19.59 

18.59 

19.50 

18.67 

27 

28 

20.48 

19.10 

20.39 

19.19 

20.31 

19.27 

20.23 

19.36 

28 

29 

21.21 

19. 7S 

21.12 

19.87 

21.04 

19.96 

20.95 

20.05 

29 

30 
31" 

21.94 

20.46 

21.85 

20.56 

21.76 

20.65 

21.67 
22.39 

20.75 
21.44 

30 
31 

^22.67 

21.14 

22.58 

21.24 

22.49 

21.34 

32    23.40 

21.82 

23.31 

21.93 

23.21 

22.03 

23.12 

22.13 

32 

33 

24.13 

22.51 

24.04 

22.61 

23.94 

22.72 

23.84 

22.82 

33 

34 

24.87 

23.19 

24.76 

23.30 

24.66 

23.40 

24.56 

23.51 

34 

35 

25.60 

23.87 

25.49 

23.98 

25.39 

24.09 

25.28 

24.20 

35 

36 

26.. 33 

24.55 

26.22 

24.67 

26.11 

24.78 

26.01 

24.89 

36 

37 

27.06 

25.23 

26.95 

25.35 

26.84 

25.47 

26.73 

25.59 

37 

38 

27.79 

25.92 

27.68 

26.04 

27.56 

26.16 

27.45 

26.28 

38 

39 

28.52 

26.60 

28.41 

26.72 

28.29 

26.85 

28.17 

26.97 

39 

40 
41 

29.25 '27.28 

29.13 

27.41 

29.01 

27.53 

28.89 

27.66 

40 

29.99  127.96 

'29.86 

28.09 

29.74 

28.22 

29.62 

28.35 

"41 

42 

30.72 

28.64 

30.59 

28.78 

30.47 

28.91 

30.34 

29.04 

42 

43 

31.45 

29.33 

31.32 

29.46 

31.19 

29 .  60 

31.06 

29.74 

43 

44 

32.18 

30.01 

32.05 

30.15 

31.92 

30.29 

31.78 

30.43 

44 

45 

32.91 

30.69 

32.78 

30.83 

32.64 

30.98 

32.51 

31.12 

45 

46 

33.64 

31.37 

.33.51 

31.52 

33.37 

31.66 

.33.23 

31.81 

46 

47 

34.37 

32.05 

34.23 

32.20 

34.09 

32.35 

33.95 

32.50 

47 

48 

35.10 

32.74 

34.96 

32.89 

34.82 

33.04 

34.67 

33.19 

48 

49 

35.84 

33.42 

35.69 

33.57 

35.. 54 

33.73 

35.40 

33.88 

49 

_50 

36.-57 

34.10 

36.42 

34.26 

30.27 

34.42 

36.12 

34.58 

50 

6 
o 

a 

.2 

6 
u 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

47  Deg. 

4G|  Deg. 

46i  Deg. 

m  Deg. 

TKAVEESt;   TABLE. 


89 


1 

u 
»• 

3 
(5 
CD 

~5l 

43  Deg. 

4S|  Deg. 

43i  Deg. 

431  Deg. 

s 

? 

51 

Lat. 

Dep. 

Lat.  1  Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

37.30 

34.78 

37.15    .34.94 

36 .  99 

35 . 1 1 

1T6784 

J^.W 

52 

38.03 

35.46 

37.88  135.63 

.37.72 

35.79 

.37.56 

35.96 

52 

53 

38.76 

30.15 

38.60  i  36.31 

38.44 

36.48 

38.29 

36.65 

53 

51 

39.49 

36.83 

39.33  137.00 

39.17 

37.17 

39.01 

37.34 

54 

55 

40.22 

37.51 

40.06 

37.69 

.39.90 

37.80 

39.73 

38.03 

55 

56 

40.96 

38.19 

40.79 

38.37 

40.62 

38.55 

40.45 

38.72 

56 

57 

41.69 

38.87 

41.52 

39.00 

41.35 

39 .  24 

41.17 

39.42 

57 

5S 

42.42 

39.56 

42.25 

39.74 

42.07 

39.92 

41.90 

40.11 

58 

59 

43.15 

40.24 

42.97 140.43 

42.80 

40.01 

42.62 

40.80 

59 

60 
61 

43.88 

40.92 

43.70  1  41.11 

43.52 
44.25 

41.30 
41.99 

43.34 

44.06 

41.49 
42.18 

60 
61 

44.61 

41.60 

44.43    41.80 

6ii 

45.34 

42.28 

45.16    42.48 

44.97 

42.68 

44.79 

42.87 

62 

63 

46.08 

42.97 

45.89  143.17 

45.70 

43.37 

15.51 

'1 3. 57 

63 

64 

46.81 

43 .  65 

40.02 

43.85 

46.42 

44.05 

46.23 

44.26 

64 

65 

47.54 

44.33 

47.34 

44.54 

47.15 

44.74] 

46.95 

44.95 

65 

66 

48.27    45.01 

43.07 

45 .  22 

47.87 

45.43 

47.68 

45 .  64 

66 

67 

49.00    45.69 

48.80 

45.91 

48.60 

46.12 

48.40 

46.33 

67 

68 

49.73 

46.38 

49.53 

40.. 59 

49.33 

46.81 

49.12 

47.02 

68 

69 

50.46 

47.06 

.50.26 

47.28 

.50.05 

4  7.. 50 

49.84 

47.71 

69 

70 

51.19 

47.74 

50.99 

47 .  96 

50.78 

48.18 

,50.. 57 

48.41 

70 

"71 

51.93 

48.42 

51.71 

48.65! 

51.50 

48.87 

51.29 

49.10 

71 

72 

52 .  r,H 

49.10 

52.44 

49.33 

.52.23 

4  9.. 56 
.50.25 
.50.94 

52.01 

49.79 

72 

73 

.53.39 

49.79 

.53.17 

50.02 

.52.95 

.52.73 

50.48 

73 

74 

.54.12 

.50.47 

53.90 

50.70 

53 .  08 

.53.45 

51.17 

74 

75 

,54.85 

51.15 

.54.63 

51.39 

.54.40 

51.63 

.54.18 

51.86 

75 

76 

55.58 

51.83 

55.36 

.52.07 

55.13 

.52.31 

.54.90 

.52.55 

76 

77 

56.31 

.52.51 

56.08 

.52.76 

55.85 

53.00 

55.62 

.53 .  25 

77 

78 

57.  (»5 

53.20 

56.81 

.53.44 

.56.. 58 

53.69 

! 56.34 

,53.94 

78 

79 

57.78 

53.88 

57.. 54 

54.13 

57.30 

,54.38 

157.07 

.54.63 

79 

80 
81 

58.51 
59.24 

.54.56 

58.27 
.59.00 

.54.81 
55 .  50 

.58.03 

1.58.76 

55.07 
55 .  76 

157.79 
.58.51 

55.32 

80 

55.24 

'56'.0fj    81 

82 

59.97 

55.92 

59.73 

.56.18 

1 59.48 

.56.45 

59.23 

.56.70      82 

83 

60 .  70 

50.61 

60.45 

.56.87 

60.21 

57.13 

1 59.96 

.57.40  1    83 

84 

61.43 

57.29 

61.18 

57 .  56 

60.93 

57.82 

60 .  68 

.58.09 

84 

85 

62.17 

57.97 

61.91 

,58.24 

61.66 

,58.51 

61.40 

5S.7S 

85 

86 

62.90 

.58.65 

62.64 

58.93 

62.38 

59.20 

62.12 

.59.47 

86 

87 

63.63 

59.33 

63.37 

59.61 

63 . 1 1 

59.89 

62.85 

60.16 

87 

88 

64.36 

60.02 

64.10 

60.30 

63.83 

60.. 58 

63.57 

1 60.85 

88 

89 

05.09 

60.70 

04.82 

60.98 

64.56 

61.26 

64.29 

61. .54 

89 

90 

91 

05 .  82 

61.38 

65.55 

61.67 

65.28 

61.95 

65.01 
65.74 

62.24 
62.93 

90 

66.55 

62.06 

'66.28 

62.35 

66.01 

62.64 

91 

92 

07.28 

02.74 

67.01 

63.04 

66.73 

63.33 

66.46 

63.62 

92 

93 

68.02 

63.43 

67.74 

63 .  72 

67.46 

64.02 

|67.18 

64.31 

93 

94 

08.75 

64.11 

68.47 

64.41 

68.19 '64.71 

167.90 

65.00 

94 

95 

69.18 

64.79 

09.20 

65.09 

68.91 

65.39 

68.62 

65.69 

95 

96 

70.21 

65.47 

69.92 

65.78 

69.64 

66.08 

69.. 35 

66.39 

96 

97 

70.94 

66.15 

70.65 

66.46 

70.36 

66.77 

70.07 

67.08 

97 

98 

71.67 

66.84 

71.37 

07.15 

71.09 

67.46 

70.79 

67.77 i    98 

99 

72.40 

67.52 

72.11 

67.83 

71.81 

68.15 

71.51 

68.46 

99 

100 

§ 

c 
5 

to 

Q 

73.14 

68.20 

72.84 

68.52 

72.. 54 

68.84 

72.24 

69.15 

_I00 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

Dep. 

Lat. 

O 

c 

d 

47 

Deg. 

46|  Deg. 

1 

46i  Deg. 

A0\  Deg. 

90 


TRAVEUSE    TABLE. 


5 

55' 

3 
CD 

'14  Deg. 

44  i  Deg. 

44i  Deg. 

44|  Deg. 

45  Deg. 

1 

0 
55' 

Lai. 

■     ■- 
Dep. 

0.69 

Lat. 

Dep. 

Lat. 
0.71 

Dep. 

"oTto 

Lat. 

Dep. 

Lat. 

Dep. 

3 

9  '. 

0.72 

0.72 

0.70 

0.71 

0.71 

0.71 

0.71 

1 

2 

1.44 

1.39 

1.43 

1.40 

1.43 

1.40 

1.42 

1.41 

1.41 

1.41 

2 

3 

2.16 

2.08 

2.15 

2.09 

2.14 

2.10 

2.13 

2.11 

2.12 

2.12 

3i 

4 

2.88 

2.78 

2.87 

2.79 

2.85 

2.80 

2.84 

2.82 

2.83 

2.83 

^\ 

f) 

3.60 

3.47 

3.58 

3.49 

3.57 

3.50 

3.55 

3.52 

3.54 

3.. 54 

5' 

6 

4.32 

4.17 

4.. 30 

4.19 

4.28 

4.21 

4.26 

4.22 

4.24 

4.24 

61 

7 

5.04 

4.86 

5.01 

4.88 

4.99 

4.91 

4.97 

4.93 

4.95 

4.95 

V  ! 

8 

5.75 

5.56 

5.73 

5.58 

5.71 

5.61 

5.68 

5.631 

5.66 

5.66 

8i 

9 

6.47 

6.25 

6.45 

6.28 

6.42 

6.31 

6.39 

6.34 

6.36 

6.36 

9' 

10 

7.19 

6.95 

7.16 

7. '88 

6.98 

7.13 

7.01 

7.10 

7.04 

7.07 
7.78 

7.07 

\78 

10 

11 

7.91 

7.64 

7.68 

7.85 

7.71 

7.81 

7.74 

11 

12 

8.63 

8.34 

8.60 

8.37 

8.56 

8.41 

8.52 

8.45 

8.49 

8.49 

J  2 

13 

9.35 

9.03 

9.31 

9.07 

9.27 

9.11 

9.23 

9.15 

9.19 

9.19 

13 

14 

10.07 

9.73 

10.03 

9.77 

9.99 

9.81 

9.94 

9.86 

9.90 

9.90 

14 

15 

10.79 

10.43 

10.74 

10.47 

10.70 

10.51 

10.65 

10.56 

10.61 

10.61 

15 

16 

11.51 

11.11 

11.46 

11.16 

11.41 

11.21 

11.36 

11.261 

11.31 

11.31 

16 

17112.23 

11.81 

12.18 

11.86 

12.13 

11.92 

12.07 

11.971 

12.02 

12.02 

IV 

18 

12.95 

12.50 

12.89 

12.56 

12.84 

12.62 

12.78 

12.67 

12.73 

12.73 

18 

19 

13.67 

13.20 

13.61 

13.261 

13.55 

13.32 

13.49 

13.38 

13.43 

13.43 

19 

20 

14.39 

13.89 

14.33 

13.96 
14.65 

14.26 

14.02 

14.20 

14.08 

14.14 
14.85 

14.14 

20 

21 

21 

15.11 

14.59 

15.04 

14.98 

U  72 

14.91 

14.78 

14.85 

29, 

15.83 

15.28 

15.76 

15.35 

15.69 

15.42 

15.62 

15.49 

15.56 

15.. 56  22 

23 

16.54 

15.98 

16.47 

16.05 

16.40 

16.12 

16.33 

16.19 

16.26 

16.26  23 

24 

17-26 

16.67 

17.19 

16.75 

17.12 

16.82 '17.04 

16.90 

16.97 

16.97124 

25  17.98 

17.37 

17.91 

17.44 

17.83 

17.52  !l7. 75 

17.60 

17.68 

17.38 

25 

26  i  18. 70 

27  19.42 

18.06 

18.62 

18.14 

18.54 

18.22  18.46 

18.30 

18.. 38 

18.38 

26 

18.76 

19.34 

18.84 

19.26 

18. 92119.17 

19.01 

19.09 

19.09 

27 

28  20.14 

19.45 

20.06 

19.54 

19.97 

19.63ll9.89 

19.71 

19.80 

19.80 

28 

29i20.86 

20.15 

20.77 

20.24 

20.68  20.33 

20.60 

20.42 

20.51 

20.51 

29 

30121.. 58 
31  I22.3O 

20.84 

21.49 

20.93 

21.40 
22.11 

21.03 

21.31 

21.12 

21.21 
21.92 

21.21 
21.92 

30 
31 

21.53 

22.21 

21.63 

'^1.73 

22.02 

21.82 

32  23.02 

22.23 

22.92 

22.33 

22.82|22.43r22.73 

22.53 

22.63 

22.63 

32 

33|23.74 

22.92 

23.64 

23.03 

23.54123.131 23.44 

23.23 

23.33 

23.33 

33 

34124.46 

23.62 

24.35 

23.72 

24.25 

23.83! 24. 15 

23.94 

24.04 

24.04 

34 

3'> 

25.18 

24.31 

25.07 

24.42 

24.96 

24. 53i 24.86 

24.64 

24.75 

24.75 

35 

36 

25.90 

25.01 

25.79 

25.12 

25 .  68 

25.23 

25.. 57 

25.34 

25.46 

25.46 

36 

37 

26.62 

25.70 

26.50 

25.82 

26.39 

25.93 

26.28 

26.05 

26.16 

26.16 

37 

38 

27.33 

26.40 

27.22 

26.52 

27.10 

26.63 

26.99 

26.75 

26.87 

26.87 

38 

39 

28.05 

27.09 

27.94 

27.21 

27.82 

27.34 

27.70 

27.46 

27.58 

27.58 

39 

40 
41 

28.77 
29'.49 

27.79 

28.65 

27.91 

28 .  53 

28,04 

28.41 

28.16 
28.86 

28.28 

28.28  40 
28.99  41 

28.48 

29.37 

28.61 

I29.24 

28.74 

29.12 

28.99 

4? 

30.21 

29.18 

30.08 

29.31 

29.96 

29.44 

29.83 

29.57 

29.70  29. 70|42 

43 

30.93 

29.87 

30.80 

30.00 

30.67 

30.14 

30.54 

30.27 

30.41  30.41 

43 

44 

31.65 

30.56 

31.52 

30.70 

31.38 

30.84 

'31.25 

30.98 

31.11  31.11 

44 

45 

32.37 

31.26 

32.23 

31.40 

.32.10 

31.54 

31.96 

31. 6S 

31.8231.82 

45 

46 

33.09 

31.95 

32.95 

32.10 

32.81 

32.24' 32.67 

32.38 

32.53,32.53146 

47 

33.81 

32 .  65 

33.67 

32.80 

33.. 52 

32.94  33.. 38 

33.09 

1 33. 23  33.23147 

48 

34.53 

33.34 

34.38 

33.49 

34.24 

33.64  3' 'r. 09 

33.79 

1.33. 94|33. 94148 

49 

35.25 

34.04 

3,0.10 

34.19 

34.95 

34.34  3'.  .80 

34.50 

34.65134.65149 

50 

1 

.2 

Q 

35^7 
Dep. 

34.73 

35.82 

134.89 

35.66 

35.05 

'35.51 

35.20 

35.36  35. 3C 

51» 

Lat. 

Dep.  1  Lat. 

Dep. 

Lat. 

D3p. 

\ 

Lat. 

Dep.  1  Lat. 

c 

46  Dog 

45|  Deg. 

45^  Deg. 

45i  Deg. 

1 

45  Deg. 

TRAVERSE    TABL15. 


9} 


92 


A  TABLE 

OF  RHUMBS. 

SHOWING 

THE  DEGREES,  MINUTES,  AND  SECONDS.  THAT  EVERY  POINT  AND  QUARTER- 
POINT  OF  THE  COMPASS  MAKES  WITH 

TUE 

MERIDIAN. 

1 

NO 

N  byE. 

N.  by  W. 

Pts. 
0 

1 
0 

1 

qr. 
1 
2 
3 
0 

o 
2 
5 
8 
11 

/         // 
48      45 
37      30 
26      15 
15        0 

|Pts 
0 
0 
0 

1 

1 

2 
3 
0 

SOL 

S.  by  E. 

TH. 

S.  byW. 

N.N.E. 

N.N.W. 

1 
1 

2 

1 
2 
3 
0 

14 

IB 
JO 

22 

3      45 
52      30 
41       15 
30        0 

1 
1 
1 

2 

1 
2 
3 
0 

S.S.E. 

S.S.W. 

N.E.byN. 

N.W.byN. 

2 
2 
2 
3 

1 
2 
3 
0 

25 
23 
33 
33 

13      45 

7      30 

53      15 

45        0 

2 
2 
2 
3 

1 
2 
3 
0 

S.E.  by  S. 

S.W.  by  S. 

N.E. 

N.W. 

3 
3 
3 
4 

1 
2 
3 
0 

3i 
33 

42 
43 

33      45 

22      30 

11       15 

0        0 

3 
3 
3 

4 

1 
2 
3 
0 

S.E. 

S.W. 

N.E.  by  E. 

N.W.byW 

4 
4 
4 
5 

1 
2 
3 
0 

47 
50 
53 
56 

48      45 
37      30 
23      15 
15        0 

4 
4 
4 
5 

1 
2 
3 
0 

S.E.  byE. 

S.W.  by  W. 

E.N.E. 

W.N  W. 

5 
5 
6 
6 

1 
2 
3 
0 

59 
61 
64 
67 

3      45 
52      30 
41      15 
30        0 

5 
5 
5 
6 

2 
3 
0 

E.S.E. 

W  S.W. 

E.byN. 

W.  by  N. 

6 
G 
6 

7 

1 
2 
3 
0 

70 

73 
75 

78 

18      45 

7      30 

C6      15 

45        0 

6 
6 
6 

7 

1 
2 
3 
0 

E.  by  S. 

W.  by  S. 

East. 

West. 

7 
7 
7 
8 

I 
2 
3 
0 

81 
84 
87 
90 

33      45 

22      30 

1]       15 

0        0 

7 
7 
7 
8 

1 
2 
3 
0 

East. 

West. 

WORKMAN'S  TABLE,  FOR  CORRECTI.\*G  THE  MIDDLE  LATlTDDE.       93 


Mid. 

i 

Lat. 

30 

40 

i   50 

1   60 

70 

.   80 

1   90 

100 

no 

o 

0  ^ 

0  ' 

0  / 

0  ' 

0  / 

0  . 

0  / 

0 

0  / 

15 

0  02 

0  08 

0  04 

0  06 

0  09 

0  r: 

0  15 

0  19 

0  23 

16 

0  02 

0  03 

0  04 

0  OG 

0  09 

0  1-^ 

0  15 

0  18 

0  22 

17 

0  02 

0  03 

0  04 

0  06 

0  OS 

0  11 

0  14 

0  17 

0  21 

18 

0  02 

0  03 

0  04 

0  08 

0  08 

0  11 

0  14 

0  17 

0  20 

19 

0  02 

0  03 

0  04 

0  00 

0  07 

0  10 

0  13 

0  16 

0  19 

20 

0  02 

0  03 

0  (4 

0  06 

0  07 

0  09 

0  12 

0  15 

0  18 

21 

0  02 

0  03 

0  04 

0  06 

0  07 

0  09 

0  12 

0  15 

0  18 

22 

0  C2 

0  03 

0  04 

0  06 

0  07 

0  09 

0  12 

0  16 

0  17 

23 

0  02 

0  03 

0  04 

0  06 

0  07 

0  09 

0  12 

0  15 

0  17 

24 

0  02 

0  03 

0  04 

0  06 

0  07 

0  09 

0  11 

0  14 

0  16 

25 

0  02 

0  03 

0  04 

0  05 

0  07 

0  09 

0  11 

0  14 

0  16 

26 

0  02 

0  03 

0  04 

0  05 

0  07 

0  09 

0  11 

0  14 

0  16 

27 

0  02 

0  03 

0  04 

0  05 

0  07 

0  08 

0  11 

0  14 

0  16 

28 

0  02 

0  03 

0  04 

0  05 

0  06 

0  08 

0  10 

0  13 

0  15 

29 

0  02 

0  03 

0  04 

0  05 

0  06 

0  08 

0  10 

0  13 

0  15 

30 

0  02 

0  03 

0  04 

0  05 

0  06 

0  08 

0  10 

0  13 

0  15 

31 

0  02 

0  03 

0  04 

0  05 

0  06 

0  08 

0  10 

0  13 

0  15 

32 

0  02 

0  03 

0  04 

0  05 

0  06 

0  08 

0  10 

0  13 

0  15 

33 

0  02 

0  03 

0  04 

0  05 

0  06 

0  08 

0  10 

0  13 

0  15 

34 

0  02 

0  03 

0  04 

0  05 

0  06 

0  08 

0  10 

0  13 

0  15 

36 

0  02 

0  03 

0  04 

0  05 

0  06 

0  08 

0  10 

0  13 

0  15 

36 

0  02 

0  03 

0  04 

0  05 

0  06 

0  08 

0  10 

0  13 

0  15 

37 

0  '2 

0  03 

0  04 

0  05 

0  06 

0  08 

0  10 

0  13 

0  15 

38 

0  02 

0  03 

0  04 

0  05 

0  06 

0  08 

0  10 

0  13 

0  15 

39 

0  02 

0  03 

0  04 

0  05 

0  06 

0  08 

0  10 

0  13 

0  15 

40 

0  02 

0  03 

0  04 

0  05 

0  06 

0  08 

0  10 

0  13 

0  15 

41 

0  02 

0  03 

0  04 

0  05 

0  06 

0  08 

0  10 

0  13 

0  15 

42 

0  02 

0  03 

0  04 

0  06 

0  06 

0  08 

0  10 

0  13 

0  15 

43 

0  02 

0  03 

0  04 

0  05 

0  07 

0  09 

0  11 

0  14 

0  16 

44 

0  02 

0  03 

0  04 

0  05 

0  07 

0  09 

0  11 

0  14 

0  16 

45 

0  02 

0  03 

0  04 

0  05 

0  07 

0  09 

0  11 

0  14 

0  16 

46 

0  02 

0  03 

0  04 

0  05 

0  07 

0  09 

0  1] 

0  14 

0  16 

.47 

0  02 

0  03 

0  04 

0  05 

0  07 

0  09 

0  11 

0  14 

0  16 

48 

0  02 

0  03 

0  04 

0  05 

0  07 

0  09 

0  11 

0  14 

0  16 

49 

0  02 

0  03 

n  04 

0  05 

0  07 

0  09 

0  11 

0  14 

0  17 

60 

0  02 

0  03 

0  04 

0  05 

0  07 

0  09 

0  11 

0  14 

0  17 

61 

0  02 

0  03 

0  04 

0  05 

0  07 

0  09 

0  11 

0  14 

0  17 

52 

0  02 

0  03 

0  04 

0  05 

0  07 

0  09 

0  12 

0  15 

0  18 

53 

0  02 

0  03 

0  04 

0  06 

0  07 

0  09 

0  12 

0  15 

0  18 

54 

0  02 

0  03 

0  04 

0  06 

0  08 

0  10 

0  13 

0  16 

0  19 

55 

0  02 

0  03 

0  04 

0  06 

0  08 

0  10 

0  13 

0  16 

0  19 

56 

0  02 

0  03 

0  04 

0  06 

0  OS 

0  10 

0  13 

0  16 

0  20 

57 

0  02 

0  03 

0  04 

0  ()G 

0  OS 

0  11 

0  14 

0  17 

0  20 

58 

0  02 

0  03 

0  04 

0  06 

0  09 

0  11 

0  14 

0  17 

0  21 

69 

0  02 

0  03 

0  04 

0  06 

0  09 

0  12 

0  15 

0  18 

0  22 

60 

0  02 

0  03 

0  04 

0  06 

0  09 

0  12 

0  15 

0  19 

0  23 

61 

0  02 

0  03 

0  05 

0  07 

0  09 

0  12 

0  15 

0  19 

0  23 

62 

0  02 

0  03 

0  05 

0  07 

0  09 

0  12 

0  16 

0  20 

0  24 

63 

0  02 

0  04 

0  05 

0  07 

0  09 

0  13 

0  16 

0  20 

0  24 

64 

0  02 

0  04 

0  06 

0  08 

0  09 

0  13 

0  17 

0  21 

0  25 

65 

0  02 

0  04 

0  06 

0  08 

0  10 

0  13 

0  17 

0  21 

0  25 

66 

0  02 

0  04 

0  C6 

0  08 

0  10 

0  14 

0  18 

0  22 

0  26 

67 

0  02 

0  04 

0  06 

0  08 

0  11 

0  15 

0  18 

0  23 

0  27 

68 

0  02 

0  04 

0  06 

0  08 

0  11 

0  15 

0  19 

0  24 

0  28 

69 

0  02 

0  05 

0  06 

0  09 

0  12 

0  16 

0  20 

0  25 

0  30 

70 

0  03 

0  05 

0  06 

0  09 

0  13 

0  17 

0  21 

0  £6 

0  31 

71 

0  04 

0  06 

0  07 

0  09 

0  13 

0  18 

0  22 

0  27 

0  33 

72 

0  04 

0  06 

0  08 

0  10 

0  14 

0  19 

0  23 

0  29 

0  35  J 

23 


94  workman's  table,  for  correotlvg  the  middle  latitude. 


Midr'i 

Lat. 

120 

130  , 

140 

ISO  , 

160  1 

170 

180 

190 

200 

o 

15 

16 

17 

18 

19 

20 

21 

22 

23 

24 

25 

26 

27 

28 

29 

30 

31 

32 

33 

34 

35 

36 

37 

38 

39 

40 

41 

42 

43 

44 

O  / 

0  27 

o  / 
0   31 

O  / 

0  35 

O  / 

0  40 

O  / 

0  45 

O  / 

0  51 

o  / 
0  58 

0  / 

1  06 

0  / 

1  14 

0  26 
0  25 
0  24 

0  30 

0  34 

0  33 

0  43 

0  49 

0  56 

1  03 

1  11 

0  28 

0  32 

0  37  ! 

0  42  ! 

0  48 

0  54 

1  01 

1  08 

0  27 

0  31 

0  36 

0  41 

0  46 

0  52 

0  58 

1  06 

0  23 

0  26 

0  30 

0  34 

0  40 

0  45 

0  50 

0  56 

1  03 

0  22 
0  21 
0  20 
0  20 
0  19 

0  25 

0  29 

0  33 

0  38 

0  43 

0  48 

0  54 

1  00 

0  25 

0  29 

0  33 

0  37 

0  42 

0  47 

0  53 

0  58 

0  24 

0  28 

0  32 

0  36 

0  41 

0  46 

0  51 

0  56 

0  24 

0  28 

0  32 

0  36 

0  40 

0  45 

0  50 

0  55 

0  23 

0  27 

0  31 

0  35 

0  39 

0  44 

0  48 

0  53 

0  19 
0  19 
0  19 
0  18 
0  18 
0  18 
0  18 
0  18 
0  18 
0  18 

0  23 

0  27 

0  31 

0  35 

0  39 

0  43 

0  47 

0  52 

0  22 

0  26 

0  30 

0  34 

0  38 

0  42 

0  47 

0  52 

0  22 

0  26 

0  30 

0  33 

0  38 

0  42 

0  46 

0  51 

0  21 

0  25 

0  29 

0  33 

0  37 

0  41 

0  46 

0  51 

0  21 

0  25 

0  29 

0  32 

0  36 

0  41 

0  45 

0  50 

0  21 

0  25 

0  28 

0  32 

0  36 

0  41 

0  45 

0  50 

0  21 

0  25 

0  28 

0  32 

0  36 

0  41 

0  45 

0  50 

0  21 

0  25 

0  28 

0  31 

0  36 

0  41 

0  45 

0  50 

0  21 

0  24 

0  27 

0  31 

0  35 

0  40 

0  44 

0  49 

0  21 

0  24 

0  27 

0  31 

0  35 

0  40 

0  44 

0  49 

0  18 
0  18 
0  18 
0  18 
0  18 
0  18 

0  21 

0  24 

0  27 

0  31 

0  35 

0  40 

0  44 

0  49 

0  21 

0  24 

0  27 

0  31 

0  35 

0  40 

0  44 

0  49 

0  21 

0  24 

0  27 

0  31 

0  35 

0  40 

0  44 

0  49 

0  21 

0  24 

0  27 

0  31 

0  36 

0  40 

0  45 

0  50 

0  21 

0  25 

0  28 

0  32 

0  36 

0  41 

0  45 

0  50 

0  22 

0  25 

0  28 

0  32 

0  36 

0  41 

0  45 

0  50 

0  18 

0  22 

0  25 

0  28 

0  32 

0  37 

0  41 

0  45 

0  50 

0  18 

0  22 

0  26 

0  29 

0  33 

0  37 

0  42 

0  46 

0  51 

0  19 
0  19 

0  23 

0  26 

0  30 

0  34 

0  38 

0  42 

0  46 

0  51 

0  23 

0  27 

0  30 

0  34 

0  38 

0  43 

0  47 

0  52 

45 
46 
47 
48 
49 
50 
51 
52 
53 
54 

0  19 
0  19 

0  23 

0  27 

0  31 

0  35 

0  39 

0  43 

0  47 

0  52 

0  23 

0  27 

0  31 

0  35 

0  39 

0  44 

0  48 

0  53 

0  20 

0  23 

0  27 

0  31 

0  35 

0  40 

0  44 

0  49 

0  54 

0  20 

0  23 

0  27 

0  31 

0  35 

0  40 

0  45 

0  50 

0  55 

0  21 

0  24 

0  28 

0  32 

0  36 

0  41 

0  45 

0  51 

0  57 

0  21 

0  24 

0  28 

0  32 

0  36 

0  41 

0  46 

0  52 

0  58 

0  21 

0  24 

0  28 

0  32 

0  37 

0  42 

0  47 

0  53 

0  59 

0  22 

0  25 

0  29 

0  33 

0  37 

0  42 

0  48 

0  54 

1  00 

0  22 

0  25 

0  29 

0  33 

0  38 

0  43 

0  49 

0  55 

1  01 

0  23 

0  26 

0  30 

0  34 

0  39 

0  44 

0  50 

0  56 

1  02 

55 
56 
57 
58 
59 
60 
61 
62 
63 
64 

0  23 

0  26 

0  30 

0  35 

0  40 

0  45 

0  51 

0  57 

1  03 

0  24 

0  27 

0  31 

0  36 

0  41 

0  46 

0  52 

0  58 

1  04 

0  24 

0  28 

0  32 

0  37 

0  42 

0  48 

0  54 

1  00 

1  06 

0  25 

0  29 

0  33 

0  38 

0  44 

0  50 

0  55 

1  02 

1  08 

0  26 

0  30 

0  34 

0  39 

0  45 

0  51 

0  57 

1  04 

1  10 

0  27 

0  31 

0  35 

0  40 

0  46 

0  52 

0  59 

1  06 

1  13 

0  27 

0  31 

0  36 

0  41 

0  47 

0  54 

1  01 

1  08 

1  15 

0  28 

0  32 

0  37 

0  42 

0  49 

0  56 

1  03 

1  10 

1  18 

0  29 

0  33 

0  39 

0  44 

0  51 

0  58 

1  05 

1  12 

1  21 

0  29 

0  34 

0  40 

0  46 

0  53 

1  00 

1  07 

1  14 

1  24 

65 

0  30 

0  35 

0  41 

0  48 

0  55 

1  02 

1  09 

1  17 

1  27 

66 

0  31 

0  37 

0  43 

0  50 

0  58 

1  05 

1  12 

1  21 

1  31 

67 

0  33 

0  38 

0  45 

0  53 

1  00 

1  07 

1  16 

1  25 

1  35 

68 

0  34 

0  40 

0  48 

0  55 

1  02 

1  10 

1  19 

1  30 

1  39 

69 
70 

0  36 

0  42 

0  50 

0  58 

1  05 

1  13 

1  23 

1  34 

1  44 

0  38 

0  44 

0  52 

1  00 

1  08 

1  17 

1  28 

1  39 

1  50 

71 

0  40 

0  46 

0  55 

1  03 

1  12 

1  22 

1  32 

1  44 

1  56 

72 

0  42 

0  49 

0  58 

1  1  06 

1  16 

1  27 

1  38 

1  50 

2  04 

TABLE    OF    MERIDIONAL    PARTS. 


95 


mr 

fob 

n^ 

20 

30 

40 

50 

60 1  70 

8^ 

90 

10O|  llo|  120|  i3o| 

0 

0 

60 

120 

180 

240 

300 

361 

421 

482 

542 

603 

664 

725  787  1 

1 

1 

61 

121 

181 

241 

301 

362 

422 

483 

543 

604 

665 

723 

788 

2 

2 

62 

122 

182 

242 

302 

363 

423 

484 

544 

605 

666 

727 

789 

•A 

3 

63 

123 

183 

243 

303 

364 

424 

485 

545 

606 

867 

728 

790 

'i 

4 

64 

124 

184 

244 

304 

365 

425 

486 

546 

607 

668 

729 

791 

5 

5 

65 

125 

185 

245 

305 

366 

426 

487 

547 

608 

669 

730 

792 

G 

6 

66 

126 

186 

246 

306 

367 

427 

488 

548 

609 

670 

731 

793 

7 

7 

67 

127 

187 

247 

307 

368 

428 

489 

549 

610 

671 

732 

794 

8 

8 

68 

128 

188 

248 

308 

369 

429 

490 

550 

611 

672 

734 

795 

9 

9 

69 

129 

189 

249 

309 

370 

430 

491 

551 

612 

673 

735 

796 

10 

10 

70 

130 

190 

250 

310 

371 

431 

492 

552 

613 

664 

736 

797 

11 

11 

71 

131 

191 

251 

311 

372 

432 

493 

553 

614 

675 

737 

798 

12 

12 

72 

132 

192 

252 

312 

373 

433 

494 

554 

615 

676 

738 

799 

13 

13 

73 

133 

193 

253 

313 

374 

434 

495 

555 

616 

677 

739 

800 

14 

14 

74 

134 

194 

254 

314 

375 

435 

496 

556 

617 

678 

740 

801 

15 

15 

75 

135 

195 

255 

315 

376 

436 

497 

557 

618 

679 

741 

802 

16 

16 

76 

136 

196 

256 

316 

377 

437 

498 

558 

619 

680 

742 

803 

17 

17 

77 

137 

197 

257 

317 

378 

438 

499 

559 

620 

681 

743 

804 

18 

18 

78 

138 

198 

258 

318 

379 

439 

500 

560 

621 

682 

744 

805 

19 

19 

79 

139 

199 

259 

319 

380 

440 

501 

561 

622 

683 

745 

806 

20 

20 

80 

140 

200 

260 

320 

381 

441 

502 

562 

623 

684 

746 

807 

21 

21 

81 

141 

201 

261 

321 

382 

442 

503 

563 

624 

685 

747 

808 

22 

22 

82 

142 

202 

262 

322 

383 

443 

504 

584 

625 

687 

748 

809 

23 

23 

83 

143 

203 

263 

323 

384 

444 

505 

565 

626 

688 

749 

810 

24 

24 

84 

144 

204 

264 

324 

385 

445 

506 

567 

627 

689 

750 

811 

25 

25 

85 

145 

205 

365 

325 

386 

446 

507 

568 

628 

690 

751 

812 

26 

26 

86 

146 

203 

206 

326 

387 

447 

508 

569 

629 

691 

752 

813 

27 

27 

87 

147 

207 

267 

327 

388 

448 

509 

570 

631 

692 

753 

815 

28 

28 

88 

148 

208 

268 

328 

389 

'149 

510 

571 

632 

693 

754 

816 

29 

29 

89 

149 

209 

269 

330 

390 

450 

511 

572 

633 

694 

755 

817 

30 

30 

90 

150 

210 

270 

331 

391 

451 

512 

573 

634 

695 

756 

818 

31 

31 

91 

151 

211 

271 

332 

392 

452 

513 

574 

635 

696 

757 

819 

32 

32 

92 

152 

212 

272 

333 

393 

453 

514 

575 

636 

697 

75S 

820 

33 

33 

93 

153 

213 

273 

334 

394 

454 

515 

576 

637 

698 

75^ 

821 

34 

34 

94 

154 

214 

274 

335 

395 

455 

516 

577 

638 

699 

760 

822 

35 

35 

95 

155 

215 

275 

336 

396 

456 

517 

578 

639 

700 

761 

823 

36 

36 

96 

156 

216 

276 

337 

397 

457 

518 

579 

640 

701 

762 

824 

37 

37 

97 

157 

217 

277 

338 

398 

458 

519 

580 

641 

702 

763 

825 

38 

38 

98 

158 

218 

278 

339 

399 

459 

520 

581 

642 

703 

764 

826 

39 

39 

99 

159 

219 

279 

340 

400 

460 

521 

582 

643 

704 

765 

827 

40 

40 

100 

160 

220 

280 

341 

401 

461 

522 

583 

644 

705 

76r 

823 

41 

41 

101 

161 

221 

281 

342 

402 

462 

523 

584 

645 

706 

767 

829 

42 

42 

102 

162 

222 

282 

343 

403 

463 

524 

585 

646 

707 

76& 

830 

43 

43 

103 

163 

223 

283 

344 

404 

464 

525 

586 

647 

708 

76C 

831 

44 

44 

104 

164 

224 

284 

345 

405 

465 

526 

587 

648 

709 

77C 

832 

45 

45 

105 

165 

225 

285 

346 

406 

466 

527 

588 

649 

710 

771 

833 

46 

46 

106 

166 

226 

286 

347 

407 

467 

528 

589 

650 

711 

77:^ 

834 

47 

47 

107 

167 

227 

287 

348 

408 

468 

529 

590 

651 

712 

773 

835 

48 

48 

108 

168 

228 

288 

349 

409 

469 

530 

591 

652 

713 

774 

836 

49 

49 

109 

169 

229 

289 

350 

410 

470 

531 

592 

653 

714 

77C 

837 

50 

50 

110 

170 

230 

290 

351 

411 

471 

532 

593 

654 

715 

777 

838 

51 

51 

111 

171 

231 

291 

352 

412 

472 

533 

594 

655 

716 

77S 

839 

52 

52 

112 

172 

232 

292 

353 

413 

473 

534 

595 

656 

717 

779 

840 

53 

53 

113 

173 

233 

293 

354 

414 

474 

535 

596 

657 

718 

780 

841 

54 

54 

114 

174 

234 

294 

355 

415 

476 

536 

597 

658 

719 

781 

842 

55 

55 

115 

175 

235 

295 

356 

416 

477 

537 

598 

659 

720 

782 

843 

56 

56 

116 

176 

236 

296 

357 

417 

478 

538 

599 

660 

721 

783 

844 

57 

57 

117 

177 

237 

297 

358 

418 

479 

539 

600 

661 

722 

784 

845 

58 

58 

118 

178 

238 

298 

359 

419 

480 

540 

601 

662 

723 

785 

846 

59 

59 

119 

179 

239 

299 

360 

420 

481 

541 

603 

663 

724 

786 

847 

96 


TABLE    OF    MERIDIONAL    PARTS. 


M,  1  140|  I50j  l6o|  17C|  180|  190|  20O|  -^ici  22C|  230|  240|  25©!  260|  27o| 

C 

8481  9U 

)  97r 

103f 

)  1098 

1161 

1225  1289 

1354 

141911484 

11550  1616 

1684 

1 

850  911 

974 

36 

)   9S 

63 

2C 

90 

55 

20 

85 

51 

18 

85 

2 

851  91C 

975 

3^ 

'  HOC 

64 

27 

';  91 

56 

21 

86 

52 

19 

86 

3 

852  9l'j 

976 

3^ 

01 

65 

28 

1  92 

57 

22 

87 

53 

20 

87 

4 

852 

9ir 

977 

3£ 

02 

66 

29 

93 

58 

23 

88 

54 

21 

88 

5 

854 

916 

978 

41 

03 

67 

30 

95 

59 

24 

90 

56 

22 

89 

6 

855 

917 

979 

42 

05 

68 

32 

96 

60 

25 

91 

57 

90 

7 

856 

918 

980 

43 

06 

69 

33 

97 

61 

26 

92 

58 

24 

91 

8 

857 

919 

981 

44 

07 

70 

34 

1  98 

62 

27 

93 

59 

25 

93 

9 

858 

920 

982 

45 

08 

71 

35 

1  99 

63 

28 

94 

60 

26 

94 

10 

859 

921 

983 

1046 

1109 

1172 

1236 

:1300 

1364 

1430 

1495 

1561 

1628 

1695 

11 

800 

922 

984 

47 

10 

73 

37 

01 

66 

31 

96 

62 

29 

96 

12 

861 

923 

985 

48 

11 

74 

38 

02 

67 

32 

97 

63 

30 

97 

13 

862 

924 

986 

49 

12 

75 

39 

03 

68 

33 

98 

64 

31 

98 

14 

863 

925 

987 

50 

13 

76 

40 

04 

69 

34 

99 

65 

32 

99 

15 

864 

926 

988 

51 

14 

77 

41 

05 

70 

35 

1500 

67 

33 

1700 

16 

865 

927 

989 

52 

15 

78 

42 

06 

71 

36 

02 

68 

34 

01 

17 

866 

928 

990 

53 

16 

79 

43 

07 

72 

37 

03 

69 

35 

03 

18 

867 

929 

991 

54 

17 

81 

44 

08 

73 

38 

04 

70 

37 

04 

19 

868 

930 

993 

55 

18 

82 

45 

10 

74 

39 

05 

71 

38 

05 

20 

869 

931 

994 

1056 

1119 

1183 

1246 

1311 

1375 

1440 

1506 

1572 

1639 

1706 

21 

870 

932 

995 

57 

20 

84 

48 

12 

76 

41 

07 

73 

40 

07 

22 

871 

933 

996 

58 

2] 

85 

49 

13 

77 

43 

08 

74 

41 

08 

23 

872 

934 

997 

59 

22 

86 

50 

14 

79 

44 

09 

75 

42 

09 

24 

873 

935 

998 

60 

23 

87   51 

15 

80 

45 

10 

77 

43 

11 

25 

874 

930 

999 

CI 

25 

88   52 

16 

81 

46 

11 

78 

44 

12 

26 

875 

937 

1000 

63 

26 

89 

53 

17 

82 

47 

13 

79 

45 

13 

27 

876 

938 

iOOl 

64 

27 

90 

54 

18 

83 

48 

14 

80 

47 

14 

28 

877 

939 

1002 

65 

28 

91 

55 

19 

84 

49 

15 

81 

48 

15 

29 

878 

941 

1003 

66 

29 

92 

56 

20 

85 

50 

16 

82 

49 

16 

30 

879 

942 

1004 

1067 

1130 

1193 

1257 

1321 

1386 

1451 

1517 

1583 

1650 

1717 

31 

880 

943 

05 

68 

31 

94 

58 

22 

87 

52 

18 

84 

51 

18 

32 

882 

944 

06 

69 

32 

95 

59 

24 

88 

53 

19 

85 

52 

20 

33 

883 

945 

07 

70 

33 

96 

60 

25 

89 

55 

20 

86 

53 

21 

34 

884 

946 

08 

71 

34 

98 

61 

26 

90 

56 

21 

88 

54 

22 

35 

885 

947 

09 

72 

35 

99 

62 

27 

92 

57 

22 

89 

56 

23 

36 

886 

948 

10 

73 

36 

1200 

64 

28 

93 

58 

24 

90 

57 

24 

37 

887 

949 

11 

74 

37 

01 

65 

29 

94 

59 

25 

91 

58 

25 

38 

888 

950 

12 

75 

38 

02 

66 

30 

95 

60 

26 

92 

59 

26 

39 

889 

951 

13 

76 

39 

03 

67 

31 

96 

61 

27 

93 

60 

27 

40 

890 

952 

1014 

1077 

1140 

1204 

1268 

1332 

1397 

1462 

1528 

1594 

1661 

1729 

41 

891 

953 

15 

78 

41 

05 

69 

33 

98 

63 

29 

96 

62 

30 

42 

892 

954 

16 

79 

42 

06 

70 

34 

99 

64 

30 

97 

63 

31 

43 

893 

955 

18 

80 

44 

07 

71 

35 

1400 

65 

31 

98 

64 

32 

44 

894 

956 

19 

81 

45 

08 

72 

36 

01 

67 

32 

99 

66 

33 

45 

895 

957 

20 

82 

46 

09 

73 

38 

02 

68 

33 

1600 

67 

34 

46 

896 

958 

21 

84 

47 

10 

74 

39 

03 

69 

35 

01 

68 

35 

47 

897 

959 

22 

85 

48 

11 

75 

40 

05 

70 

36 

02 

69 

36 

48 

898 

960 

23 

86 

49 

12 

76 

41 

06 

71 

37 

03 

70 

38 

49 

899 

961 

24 

87 

50 

13 

77 

42 

07 

72 

38 

04 

71 

39 

50 

900 

962 

1025 

1088 

1151 

1215 

1278 

1343 

1408 

1473 

1539 

1605 

1672 

1740 

51 

901 

963 

26 

89 

52 

16 

80 

44 

09 

74 

40 

06 

73 

41 

52 

902 

964 

27 

90 

53 

17 

81 

45 

10 

75 

41 

08 

75 

42 

53 

903 

965 

28 

91 

54 

18 

82 

46 

11 

76 

42 

09 

76 

43 

54 

904 

966 

29 

92 

55 

19 

83 

47 

12 

77 

43 

10 

77 

44 

65 

905 

968 

30 

93 

56 

20 

84 

48 

13 

79 

44 

11 

78 

46 

56 

906 

969 

31 

94 

57 

21 

85 

49 

14 

80 

46 

12 

79 

47 

57 

907 

970 

32 

95 

58 

22 

86 

50 

15 

81 

47 

13 

80 

48 

58 

908 

971 

33 

96 

59 

23 

87 

52 

16 

82 

48 

14 

81 

49 

69 

909 

972 

34 

97 

60 

24 

88 

53 

18 

83 

49 

15 

82 

50 

TABLE    OF    MERIDIONAL    PARTS. 


97 


M.l 

280|  290]  30C|  31o|  320|  330j  340|  350|  36o]  370|  380] 

3901  40Oi  41oj 

0 

1751 

1819 

1888 

1958  2028] 

2100 

2171 

2-:44  2318i2393!2468| 

2545  2623  2702  I 

1 

52 

21 

90 

59 

30 

01 

73 

46   19| 

94 

70 

46   24! 

03 

2 

53 

22 

91 

60 

31 

02 

74 

47 

20 

95 

71 

48 

25! 

04 

3 

55 

23 

92 

62 

32 

03 

75 

48: 

22 

96 

72 

49 

27| 

06 

4 

56 

24 

93 

63 

33 

04 

76 

49; 

23 

98 

73 

50 

28 

07 

5 

5.7 

25 

94 

64 

34 

05 

78 

50 

24 

99 

75 

51 

29| 

08 

6 

58 

26 

95 

65 

35 

07 

79 

52 

25 

2400 

76 

53 

31 

10 

7 

59 

27 

96 

66 

37 

08 

80 

53 

27 

01 

77 

54 

32 

11 

8 

60 

29 

98 

67 

38 

09 

81 

54 

28 

03 

78 

55 

33 

12 

9 

61 

30 

99 

69 

39 

10 

82 

55I 

29 

04 

80 

57 

34 

14 

10 

1762 

1831 

1900 

1970 

2040 

2111 

2184 

2257 

2330 

2405 

2481 

2558 

2636 

2715 

11 

64 

32 

01 

71 

41 

13 

85 

58 

32 

06 

82 

59 

37 

16 

12 

65 

33 

02 

72 

43 

14 

86 

59 

33 

08 

84 

60 

38 

18 

13 

66 

34 

03 

73 

44 

15 

87 

60 

34 

09 

85 

62 

40 

19 

14 

67 

35 

05 

74 

45 

16 

88 

61 

35 

10 

86 

63 

41 

20 

15 

68 

37 

06 

76 

46 

17 

90 

63 

37 

11 

87 

64 

42 

22 

16 

69 

38 

07 

77 

47 

19 

91 

64 

38 

13 

89 

66 

44 

23 

17 

70 

39 

08 

78 

48 

20 

92 

65 

39 

14 

90 

67 

45 

24 

18 

72 

40 

09 

79 

50 

21 

93 

66 

40 

15 

91 

68 

46 

26 

19 

73 

41 

10 

80 

51 

22 

94 

68 

42 

16 

92 

69 

48 

27 

20 

1774 

1842 

1912 

1981 

2052 

2123 

2196 

2269 

2343 

2418 

2494 

2571 

2649 

2728 

21 

75 

43 

13 

83 

53 

25 

97 

70 

44 

19 

95 

72 

50 

29 

22 

76 

45 

14 

84 

54 

26 

98 

71 

45 

20 

96 

73 

51 

31 

23 

77 

46 

15 

85 

56 

27 

99 

72 

46 

22 

98 

75 

53 

32 

24 

78 

47 

16 

86 

57 

28 

2200 

74 

48 

23 

99 

76 

54 

33 

25 

80 

48 

17 

87 

58 

29 

02 

75 

49 

24 

2500 

77 

55 

35 

26 

81 

49 

18 

88 

59 

31 

03 

76 

50 

25 

01 

78 

57 

36 

27 

82 

50 

20 

90 

60 

32 

04 

77 

51 

27 

03 

80 

58 

37 

28 

83 

52 

21 

91 

61 

33 

05 

79 

53 

28 

04 

81 

59 

39 

29 

84 

53 

22 

92 

63 

34 

07 

80 

54 

29 

05 

82 

61 

40 

30 

1785 

1854 

1923 

1993 

2064 

2135 

2208 

2281 

2355 

2430 

2508 

2584 

2662 

2742 

31 

86 

55 

24 

94 

65 

37 

0') 

82 

56 

32 

08 

85 

63 

43 

32 

87 

56 

25 

95 

66 

38 

10 

83 

58 

33 

09 

86 

65 

44 

33 

89 

57 

27 

97 

67 

39 

11 

85 

59 

34 

10 

88 

66 

46 

34 

90 

58 

28 

98 

69 

40 

13 

86 

60 

35 

12 

89 

67 

47 

35 

91 

60 

29 

99 

70 

41 

14 

87 

61 

37 

13 

90 

69 

48 

36 

92 

61 

30 

2000 

71 

43 

15 

88 

63 

38 

14 

91 

70 

50 

37 

93 

62 

31 

01 

72 

44 

16 

90 

64 

39 

15 

93 

71 

51 

38 

94 

63 

32 

02 

73 

45 

17 

91 

65 

40 

17 

94 

73 

52 

39 

95 

64 

34 

04 

75 

46 

19 

92 

66 

42 

18 

95 

74 

54 

40 

1797 

1865 

1935 

2005 

2076 

2147 

2220 

2293 

;;368 

2443 

2519 

2597 

2675 

2755 

41 

98 

66 

36 

06 

77 

49 

21 

95 

69 

44 

21 

98 

76 

56 

42 

99 

68 

37 

07 

78 

50 

22 

96 

70 

45 

22 

99 

78 

58 

43 

1800 

69 

38 

08 

79 

51 

24 

97 

71 

47 

23 

2600 

79 

59 

44 

01 

70 

39 

10 

80 

62 

25 

98 

73 

48 

24 

02 

80 

60 

45 

02 

71 

41 

11 

82 

53 

26 

99 

74 

49 

26 

03 

82 

62 

46 

03 

72 

42 

12 

83 

55 

27 

2301 

75 

51 

27 

04 

83 

63 

47 

05 

73 

43 

13 

84 

56 

28 

02 

76 

52 

28 

06 

84 

64 

48 

06 

75 

44 

14 

85 

57 

30 

03 

78 

53 

30 

07 

86 

66 

49 

07 

76 

45 

15 

86 

"58 

31 

04 

79 

54 

31 

08 

87 

67 

50 

1808 

1877 

1946 

2017 

2088 

2159 

2232 

2306 

2380 

2456 

2532 

2610 

2688 

2768 

51 

09 

78 

48 

18 

89 

61 

33 

07 

81 

57 

33 

11 

90 

70 

52 

10 

79 

49 

19 

90 

62 

35 

08 

83 

58 

35 

12 

91 

71 

53 

11 

80 

50 

20 

91 

63 

36 

09 

84 

59 

36 

14 

92 

72 

54 

13 

81 

51 

21 

92 

64 

37 

11 

85 

61 

37 

15 

94 

74 

55 

14 

83 

52 

22 

94 

65 

38 

12 

86 

62 

38 

16 

95 

75 

56 

15 

84 

53 

24 

95 

67 

39 

13 

88 

63 

40 

17 

96 

76 

57 

16 

85 

55 

25 

96 

68 

41 

14 

89 

64 

41 

19 

98 

78 

58 

17 

86 

5G|  26 

97 

69 

42 

16 

90 

66 

42 

20 

99 

79 

59 

18|  67 

57  i  27 

98 

70j  43 

17 

91 

67 

44 

21 

2700 

80 

98 


TABLE    OF    MERIDIONAL    PARTS. 


[mT 

1  42oj  430|  44oj  450|  460|  47J|  480j  490i  50^|  51o,  520|  530|  54o 

550 

0 

2782 

286312946 

3030 

3116:32031329213382 

3474 

3569 

3665 

3764 

3885 

3968 

1 

83 

1  6^ 

47 

31 

17 

041  9Hi  84 

76 

70 

67 

65 

67 

70 

2 

84 

'  66 

49 

33 

19 

Ub 

95  i  bji 

78 

72 

68 

67 

68 

71 

3 

86 

67 

50 

34 

20 

07 

96 

87 

79 

74 

70 

69 

70 

73 

4 

87 

69 

51 

36 

21 

09 

98 

88 

81 

75 

72 

70 

71 

75 

5 

88 

70 

53 

37 

23 

10 

99 

90 

82 

77 

73 

72 

73 

77 

6 

90 

71 

54 

38 

24 

12 

3301 

91 

84 

78 

75 

74 

75 

78 

7 

91 

73 

56 

40 

26 

13 

02 

93 

85 

80 

77 

75 

77 

80 

8 

92 

74 

57 

41 

27 

14 

03 

94 

87 

82 

78 

77 

78 

82 

9 

94 

75 

58 

43 

29 

16 

05 

96 

88 

83 

80 

79 

80 

84 

10 

2795 

2877 

2960 

3044 

3130 

3217 

3306|3397 

3^i90 

3585 

3681 

3780 

3882 

3985 

11 

97 

78 

61 

46 

31 

19 

08 

99 

92 

86 

83 

82 

83 

87 

12 

98 

80 

63 

47 

33 

20 

09 

3400 

93 

88 

85 

84 

85 

89 

13 

99 

81 

64 

48 

34 

22 

11 

02 

95 

90 

86 

85 

87 

91 

14 

2801 

82 

65 

50 

36 

23 

12 

03 

96 

91 

88 

87 

89 

92 

15 

02 

84 

67 

51 

37 

25 

14 

05 

98 

93 

90 

89 

90 

94 

16 

03 

85 

68 

53 

39 

26 

16 

07 

99 

94 

91 

90 

92 

96 

17 

05 

86 

70 

54 

40 

28 

17 

08 

3501 

96 

93 

92 

94 

98 

18 

06 

88 

71 

55 

42 

29 

19 

10 

03 

98 

95 

94 

95 

.99 

19 

07 

89 

72 

57 

43 

31 

20 

11 

04 

99 

96 

95 

97 

4001 

20 

2809 

289! 

2974 

3058 

3144 

3232 

3322 

3413 

:3.506 

3601 

3698 

3797 

3899 

4003 

21 

10 

92 

75 

60 

46 

34 

24 

14 

07 

02 

99 

99 

3901 

05 

22 

11 

93 

76 

61 

47 

35 

25 

16 

09 

04 

3701 

3800 

02 

06 

23 

13 

95 

78 

63 

49 

37 

26 

17 

10 

06 

03 

02 

04 

08 

24 

14 

96 

79 

04 

50 

38 

28 

19 

12 

07 

04 

04 

08 

10 

25 

15 

97 

81 

65 

52 

40 

29 

20 

14 

09 

06 

06 

07 

12 

26 

17 

99 

82 

67 

53 

41 

31 

22 

15 

10 

07 

07 

09 

14 

27 

18 

2900 

83 

68 

55 

42 

32 

23 

17 

12 

09 

09 

11 

15 

28 

20 

02 

85 

70 

56 

44 

34 

25 

18 

14 

11 

11 

13 

17 

29 

21 

03 

86 

71 

57 

45 

35 

27 

20 

15 

13 

12 

14 

19 

30 

2822 

2904 

3988 

3073 

3159 

3247 

3337 

3428 

3521 

J'Ml 

3714 

3S14 

3916 

4021 

31 

24 

06 

89 

74 

60 

48 

38 

30 

23 

18 

16 

16 

18 

22 

32 

25 

07 

91 

75 

62 

50 

40 

31 

25 

20 

17 

17 

19 

24 

33 

26 

08 

92 

77 

63 

51 

41 

33 

26 

22 

19 

19 

21 

26 

34 

28 

10 

93 

78 

65 

53 

43 

34 

28 

23 

21 

21 

22 

28 

35 

29 

11 

95 

80 

66 

54 

44 

36 

29 

25 

22 

22 

25 

29 

38 

30 

13 

96 

81 

68 

56 

46 

37 

31 

26 

24 

24 

26 

31 

37 

32 

14 

98 

83 

69 

57 

47 

39 

32 

28 

26 

26 

28 

33 

38 

33 

15 

99 

84 

71 

59 

49 

40 

34 

30 

27 

27 

30 

35 

39 

34 

17 

3000 

85 

72 

60 

50 

42 

36 

31 

29 

29 

32 

37 

40 

2836 

2918 

3002 

3087 

3173 

3262 

3352 

3443 

3537 

3633 

3731 

3  31 

3933 

4038 

41 

37 

19 

03 

88 

75 

63 

53 

45 

39 

34 

32 

32 

35 

40 

42 

39 

21 

05 

90 

76 

65 

55 

47 

40 

36 

34 

34 

37 

42 

43 

40 

22 

06 

91 

78 

66 

56 

48 

42 

38 

36 

36 

38 

44 

44 

41 

24 

07 

93 

79 

68 

58 

50 

43 

39 

37 

38 

40 

45 

45 

43 

25 

09 

94 

81 

69 

59 

51 

45 

41 

39 

39 

42 

47 

46 

44 

26 

10 

95 

82 

71 

61 

53 

47 

43 

41 

41 

44 

49 

47 

45 

28 

12 

97 

84 

72 

62 

54 

48 

44 

42 

43 

45 

51 

48 

47 

29 

13 

98 

85 

74 

64   56 

50 

46 

44 

44 

47 

52 

49 

48 

31 

14 

3100 

87 

75 

65 

57 

51 

47 

46 

46 

49 

54 

50 

2849 

2932 

3016 

3101 

3188 

3277 

3367 

3459 

3553 

3049 

3747 

384S 

3951 

4056 

61 

5i 

33 

17 

03 

90 

78 

68 

60 

55  i  51 

49 

49 

52 

58 

52 

52 

35 

19 

04   91 

80 

70 

62 

56 

52 

50 

51 

54 

60 

53 

54 

36 

20 

05   92 

81 

71 

64 

58 

54 

52 

53  i  56 

61 

54 

55 

37 

21 

07   94 

83 

73 

65 

59 

55 

54 

54 

58 

63 

55 

56 

39 

23 

08 

95 

84 

74 

67 

61 

57 

55 

56 

59 

65 

56 

58 

40 

24 

10 

97 

86 

76 

68 

62 

59 

57 

58 

61 

67 

57 

59 

42 

26i   11 

98 

87 

78 

70 

64   60 

59 

60 

63 

69 

58 

60 

43 

27   133200 

89 

79 

71 

66   62 

60 

61 

64 

70 

59 

62 

44 

29   14l  01 

90 

81 

73 

67   64 

62 

631  fi6 

72 

TABLE 

3F  MERIDIONAL  PARTS. 

DD 

"Tf.  1  oo"i  5701  5SO|  590|  60O|  6I0I  620|  630|  640|  05O|  66oj  Q',o.   o«-|  <iyo] 

0  4074 

4183  4294 

4409  45271 

4649 

4775  4905,5039  5179; 

5324 

5474  5631  5795  | 

1   76 

84 

96 

11 

29 

61 

77 

07 

42   81 

26 

77 

33   97 

2   77 

86 

98 

13 

31 

53 

79 

09 

44   84 

28 

79 

36  5800 

3   79 

88 

4300 

15 

33 

55 

81 

12 

46   86 

31 

82 

39 

03 

4   81 

90 

02 

17 

35 

57 

84 

14 

49   88 

33 

84 

42 

06 

5   83 

92 

04 

19 

37 

60 

86 

16 

51   91 

36 

87 

44 

09 

6   85 

94 

06 

21 

39 

62 

88 

18 

53   93 

38 

89 

47 

11 

7   86 

95 

08 

23 

41 

64 

90 

20 

55   95 

41 

92 

50 

14 

8   88 

97 

09 

25 

43 

66 

92 

23 

58   98 

43 

95 

52 

17 

9;  90 

99 

11 

27 

45 

68 

94 

25 

60  5200 

46 

97 

55 

20 

10  4092 

4201 

4313 

4429 

4547 

4670 

4796 

4927 

5062  5203 

5348 

5500 

5658 

5823 

111  94 

03 

15 

31 

49 

72 

98 

29 

65 

05 

51 

02 

60 

25 

12'  95 

05 

17 

33 

51 

74 

4801 

31 

67i 

07 

53 

05 

63 

28 

13'  97 

07 

19 

34 

53 

76 

03 

34 

69j 

10 

56 

07 

66 

31 

141  99 

08 

21 

36 

55 

78 

05 

36 

71 

12 

58 

10 

68 

34 

15  4101 

10 

23 

38 

57 

80 

07 

38 

74 

14 

61 

13 

71 

37 

16|  03 

■  12 

25 

40 

59 

82 

09 

40 

76 

17 

63 

15 

74 

39 

17|  04 

14 

27 

42 

62 

84 

11 

43 

78! 

19 

66 

18 

76 

42 

18!  06 

16 

28 

44 

64 

87 

14 

45 

81 

22 

68 

20 

79 

45 

19j  08 

18 

30 

46 

66 

89 

16 

47 

83 

24 

71 

23 

82 

48 

20  4110 

4220 

4332 

4448 

4568 

4691 

4818 

4949 

5085 

5226 

5373 

5526 

5685 

5851 

21 

12 

21 

34 

50 

70 

93 

20 

51 

88 

29 

76 

28 

87 

54 

22 

13 

23 

36 

52 

72 

95 

22 

54 

90 

31 

78 

31 

90 

56 

23 

15 

25 

38 

54 

74 

97 

24 

66 

92 

34 

80 

33 

93 

59 

24 

17 

27 

40 

56 

76 

99 

26 

68 

95 

36 

83 

36 

95 

02 

25 

19 

29 

42 

58 

78 

4701 

29 

60 

97 

38 

85 

39 

98 

65 

26 

21 

31 

44 

60 

80 

03 

31 

63 

99 

41 

88 

41 

5701 

68 

27 

22 

32 

46 

62 

82 

05 

33 

65 

5102 

43 

90 

44 

04 

71 

28 

24 

34 

47 

64 

84 

07 

35 

67 

04 

46 

93 

46 

06 

74 

29 

26 

36 

49 

66 

86 

10 

37 

69 

06 

48 

95 

49 

09 

76 

30 

4128 

4238 

4351 

4468 

4588 

4712 

4839 

4972 

5108 

5250 

5398 

5552 

5712 

5879 

31 

30 

40 

53 

70 

90 

14 

42 

74 

11 

53 

5401 

54 

15 

82 

32 

32 

42 

55 

72 

92 

16 

44 

76 

13 

55 

03 

57 

17 

85 

33   33 

44 

57 

74 

94 

18 

46 

78 

15 

58 

06 

59 

20 

88 

34|  35 

46 

59 

76 

96 

20 

48 

81 

18 

60 

08 

62 

23 

91 

35 

37 

47 

61 

78 

98 

22 

50 

83 

20 

63 

11 

65 

25 

94 

36 

39 

49 

63 

80 

4600 

24 

52 

85 

22 

65 

13 

67 

28 

96 

37 

41 

51 

65l  82 

02 

26 

55 

87 

25 

67 

16 

70 

31 

99 

38 

42 

53 

67 

84 

04 

28 

57 

90 

27 

70 

18 

73 

34 

5P02 

39 

44 

55 

69 

86 

06 

31 

59 

92 

29 

72 

21 

75 

36 

05 

40 

4146 

4257 

4370 

4488 

4608 

4733 

4861 

4994 

5132 

5275 

5423 

5578 

5739 

5908 

41 

48 

59 

72 

90 

10 

35 

63 

96 

34 

77 

26 

80 

42 

11 

■42 

50 

60 

74 

92 

12 

37 

65 

99 

36 

80 

28 

83 

45 

14 

43 

52 

62 

76 

94 

14 

39 

68 

5001 

39 

82 

31 

86 

47 

17 

44 

53 

64 

78 

95 

16 

41 

70 

03 

41 

84 

33 

88 

50 

19 

45 

55 

66 

80 

97 

18 

43 

72 

05 

43 

87 

36 

91 

53 

22 

46 

57 

68 

82 

99 

20 

45 

74 

08 

46 

89 

38 

94 

56 

25 

47 

59 

70 

84 

4501 

23 

47 

76 

10 

48 

92 

41 

96 

58 

28 

43 

61 

72 

86 

03 

25 

50 

79 

12 

51 

94 

43 

99 

61 

31 

49 

62 

74 

88 

05 

27 

52 

81 

14 

53 

97 

46 

5602 

64 

34 

50  4!  64 

4275 

4390 

4507 

4629 

4754 

4883 

5017 

5155 

5299 

5448 

5604 

5767 

5937 

511  GG 

77!  92 

09 

31 

56 

85 

19 

58 

5301 

51 

07 

71 

1   10 

52 

68 

79 

94 

11 

33 

58 

87 

21 

60 

04 

54 

10 

72 

1  43 

53 

70 

81 

96 

13 

35 

60 

90 

23 

62 

06 

56 

12 

75:  4^ 

54 

72 

83 

98 

15 

37 

62 

92 

26 

65 

09 

59 

15 

78 1  48 

55 

73 

85 

99 

17 

39 

64 

94 

28 

67 

11 

61 

17 

81   -y 

56 

75 

87 

4401 

19 

41 

66 

96 

30 

69 

14 

64 

20 

83   54 

57 

77 

89 

03 

21 

43 

69 

98 

33 

72 

16 

66 

23 

86   57 

58 

79 

91 

05 

23 

45 

71 

4901 

35 

74 

19 

69 

25 

89   60 

59 

81 

92 

07 

25 

47 

73 

03 

37 

76 

21 

71 

28 

92!  63 

iOO 


TABLE    OF    MERIDIONAL    PARTS. 


M. 

70Oj  71o|  720|  730|  740|  750|  760|  770|  780|  790|  80O|  81o|  820 

830 

0 

0966  614616335  6534 

674616970,7210 

7467l7745;8046j8375:8739  9145 

9606 

1 

6r.  49 

38 

38 

49 

74 

14 

72 

49 

51 

81 

45 

53 

14 

2 

72   62 

41 

41 

53 

78 

18 

76 

54 

56 

87 

52 

60 

22 

3 

75;  65 

45 

45 

57 

82 

22 

81 

59 

61 

93 

58 

67 

31 

4 

78 

58 

48 

48 

60 

86 

27 

85 

64 

67 

98 

65 

74 

39 

5 

81 

61 

51 

52 

64 

90 

31 

90 

69 

72 

8404 

71 

82 

47 

6 

84 

64 

54 

55 

68 

94 

35 

94 

74 

77 

10 

78 

89 

55 

7 

86 

67 

58 

58 

71 

97 

39 

98 

78 

83 

16 

84 

96 

64 

8 

89 

70 

61 

62 

75 

7001 

43 

7503 

83 

88 

22 

91 

9203 

72 

9 

92 

73 

64 

65 

79 

05 

47 

07 

88 

93 

27 

97 

11 

81 

10 

5995 

6177 

6367 

6569 

6782 

7009 

7252 

7512 

7793 

8099 

8433 

8804 

9218 

9689 

11 

98 

80 

71 

72 

86 

13 

56 

16 

98 

8104 

39 

10 

25 

97 

12, 

6001 

83 

74 

76 

90 

17 

60 

21 

7803 

09 

45 

17 

33 

9706 

1^ 

04 

86 

77 

79 

93 

21 

64 

25 

08 

15 

51 

23 

40 

14 

14 

07 

89 

80 

83 

97 

25 

68 

30 

13 

20 

57 

30 

48 

23 

15 

10 

92 

84 

86 

6801 

29 

73 

35 

17 

25 

63 

36 

55 

31 

16 

13 

95 

87 

90 

04 

33 

77 

39 

22 

31 

69 

43 

62 

40 

17 

16 

98 

90 

93 

08 

37 

81 

44 

27 

36 

74 

49 

70 

48 

18 

19 

6201 

94 

96 

12 

41 

85 

48 

32 

41 

80 

56 

77 

57 

19 

•22 

05 

97 

6600 

15 

45 

89 

53 

37 

47 

86 

63 

85 

65 

20 

6025 

6208 

6400 

6603 

6819 

7049 

7294 

7557 

7842 

8152 

8492 

8869 

9292 

9774 

21 

28 

11 

03 

07 

23 

52 

98 

62 

47 

58 

98 

76 

9300 

83 

22 

31 

14 

07 

10 

26 

56 

7302 

66 

52 

63 

8504 

83 

07 

91 

23 

34 

17 

10 

14 

30 

60 

06 

71 

57 

68 

10 

89 

15 

9800 

24 

37 

20 

13 

17 

^4 

64 

11 

76 

62 

74 

16 

96 

22 

09 

25 

40 

23 

17 

21 

38 

68 

15 

80 

67 

79 

22 

8903 

30 

17 

26 

43 

26 

20 

24 

41 

~72 

19 

85 

72 

85 

28 

09 

38 

26 

27 

46 

30 

23 

28 

45 

V€ 

23 

89 

77 

90 

34 

16 

45 

35 

28 

49 

33 

27 

31 

49 

80 

28 

94 

82 

96 

40 

23 

53 

44 

29 

52 

36 

30 

35 

53 

84 

32 

98 

87 

8201 

46 

30 

60 

52 

30 

6055 

6239 

6433 

6639 

6856 

7088 

7338 

76103 

7892 

8207 

8552 

8936 

9368 

9861 

31 

58 

42 

37 

42 

60 

92 

40 

08 

97 

12 

58 

43 

76 

70 

32 

61 

45 

40 

46 

64 

96 

45 

12 

7902 

18 

64 

50 

83 

79 

33 

64 

49 

43 

49 

68 

7100 

49 

17 

07 

23 

71 

57 

91 

88 

34 

67 

52 

47 

53 

71 

04 

63 

22 

12 

29 

77 

63 

99 

97 

35 

70 

55 

50 

56 

75 

08 

58 

26 

17 

34 

83 

70 

9407 

9906 

36 

73 

58 

53 

60 

79 

12 

62 

31 

22 

40 

89 

77 

14 

15 

37 

76 

61 

57 

63 

83 

16 

66 

36 

27 

45 

95 

84 

22 

24 

38 

79 

64 

60 

67 

86 

20 

71 

40 

32 

,51 

8601 

91 

30 

33 

39 

82 

68 

63 

70 

90 

24 

75 

45 

37 

56 

07 

98 

38 

42 

40 

6085 

6271 

6467 

6674 

6894 

7128 

7379 

7650 

7942 

8262 

8614 

9005 

9445 

9951 

41 

88 

74 

70 

77 

98 

32 

84 

54 

48 

67 

20 

12 

53 

60 

42 

91 

77 

73 

81 

6901 

36 

88 

59 

53 

73 

26 

18 

f)l 

69 

43 

94 

80 

77 

85 

05 

40 

92 

64 

58 

79 

32 

25 

09 

78 

44 

97 

83 

80 

88 

09 

45 

97 

68 

63 

84 

38 

32 

77 

87 

45 

6100 

87 

83 

92 

13 

49 

7401 

73 

68 

90 

44 

39 

85 

9996 

46 

04 

90 

87 

95 

17 

53 

OG 

78 

73 

95 

51 

46 

93 

10005 

47 

06 

93 

90 

99 

20 

57 

10 

83 

78 

8301 

57 

53 

9501 

10015 

48 

09 

96 

94 

6702 

24 

61 

14 

87 

83 

07 

63 

60 

09 

10024 

49 

12 

99 

97 

06 

28 

65 

19 

92 

89 

12 

69 

67 

17 

10033 

50 

6115 

6303 

6500 

6710 

6932 

7169 

7423 

7697 

7994 

8318 

8676 

9074 

9525 

10043 

51 

18 

06 

04 

13 

36 

73 

27 

7702 

99 1  24 

82 

81 

33 

10052 

52 

21 

09 

07 

17 

40 

77 

32 

06 

80041  29 

88 

88 

41 

10061 

53 

24 

12 

11 

20 

43 

81 

36 

11 

09   35 

93 

96 

49 

10071 

54 

27 

15 

14 

24 

47 

85 

41 

16 

14  41 

8701 

9103 

57 

10080 

55 

30 

19 

17 

28 

51 

89 

45 

21 

20   47 

07 

10 

65  10089 

56 

33 

22 

21 

31 

55 

94 

49 

25 

25   52 

14 

17 

73:10099 

67 

36 

25 

24 

35 

59 

98 

54 

30 

30   58 

20 

24 

8l|l0108 

58 

40 

28 

28 

38 

63 

7202 

58 

35 

35   64 

26 

31 

89  10118 

59 

43 

32 

31 

421  66 

06 

63 

40 

40   69 

33 

38 

98110127 

^  Mf/Hi 

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>  IWVd    Street 


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SOUTHEASTERN  MASSACHUSETTS  UNIVERSITY 


3    ETEE  D031L  Tbl  T 


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^(    Sp.Coll.   TA5i^5    .D26  181^7       oQf^r^ 
Davies,    Charles  6O0D^ 

Elements    of    surveying,, , 


/  ?  "^  /