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Full text of "The engineer's, mining surveyor's and contractor's field-book"

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^ THE 

ENGINEERS, MINING SUEVEYOE'S 
AND CONTEACTOE'S 

FIELD-BOOK. 

BT 

W. DAVIS HASKOLL, 

CTVrL ENGINEER. 

SECOND EDITION, MUCH ENLARGED. 
CONSISTING OF 

A SERIES OF TABLES, WITH RULES, 

EXPLANATIONS OF SYSTEMS, AND USE OF THEODOLITE FOR 

TRAVERSE SURVEYING 

AND PLOTTING THE WORK WITH MINUTE ACCURACY 
BT MEANS OF STRAIGHT EDGE AND SET SQUARE ONLY; 

LEVELLING WITH THE THEODOLITE, 

CASTING OUT AND REDUCING LEVELS TO DATUM, 
AND PLOTTING SECTIONS IN THE ORDINARY MANNER; 

SETTING OUT CURVES WITH THE THEODOLITE 

BY TANGENTIAL ANGLES AND MULTIPLES 
WITH RIGHT AND LEFT-HAND READINGS OF THE INSTRUMENT; 

SETTING OUT CURVES WITHOUT THEODOLITE 

ON THE SYSTEM OF TANGENTIAL ANGLES BY SETS OF 
TANGENTS AND OFFSETS ; AND 

EARTHWORK TABLES TO 80 FEET DEEPy, ^ 

CALCULATED FOR EVERY 6 INCHES IN DEPTH. /, ^ 1J y^ 

LONDON: >^' 

LOCKWOOD & CO., 7 STATIONER S'-H ALL COURT. 

1866. 



I \ u 



LONDON 

PRINTED BY 8POTTI6WOODE AND CO. 

NEW-STHKET 6QUABH 



PREFACE 

TO 

THE SECOND EDITION. 



Since the First Edition of the ' Field Book,' the author has 
found, through conversation with numerous friends, that it 
would be advisable to enter more into detail as to the ap- 
plication of the Tables. He has therefore given, in the Intro- 
duction to this Second Edition, an explanation of the system 
of levelling with the theodolite, by which the student may 
perceive how rapidly a network of trial levels may be ob- 
tained over a very extensive area through a hilly country ; 
and also of the system of traverse surveying and plotting, 
more particularly as applicable to the working surveys re- 
quired through thickly populated districts, where great ac- 
curacy in the plans is necessary. 

For those who object to the theodolite, a set of tables has 
been given for setting out curves by numerous offsets from one 
tangent. The author has besides added, in this Second 
Edition, Earthwork Tables for every 6 inches up to 80 feet 
deep ; and a Table of Gradients, which will be found to reduce 
very considerably the labour of preparing working sections. 



a2 



INTRODUCTION. 



It is not unworthy of remark that, whilst every branch of engineering, 
with two exceptions, has, during the last thirty years, been progressing 
with giant strides,' the exceptions, land surveying and levelling, 
remain exactly where they were ; this, of course, is the general rule only : 
there are exceptions, no doubt, numerous. Taking into consideration the 
great advantages of the present day, in the shape of ordnance maps, 
tithe plans, improved instruments, and the gradients and curves which 
we may now adopt, it is doubtful whether, generally speaking, surveyors 
know as well now how to pick out a line of railway as the professional 
man of a quarter of a century ago. This was about the only reproof 
made against the engineer by Lord Eedesdale in his late ' raid ' on rail- 
way people generally. His lordship observed that railway plans were 
not sufficiently studied ; the observation is not a whit more flattering to 
the writer than to his brother professionals, but he submits that it is 
true. 

It would, of course, be unfair to apply this observation to those cases 
where a professional man is sent down at the very last moment, when 
there is scarcely time to prepare any plans and sections whatever, after 
merely giving a glance at a country, where he can very often barely see 
a mile ahead. The condition now more particularly referred to, is 
where the engineering surveyor is engaged in actual exploring or trial 
levelling for the selection of a line of railway at home or abroad, and 
as to the most expeditious method of obtaining sufficient levels to ensure 
the best passes, the most favourable starting-points when we are at 
liberty to select, and the best points or thereabouts along the line so as 
to avoid heavy works. These circumstances necessitate getting over a 
wide expanse of ground in a short time, and this can be done only by 
adopting suitable means. 

The ' good old times ' have passed away, when we laid out railways 
through flat and undulating countries ; with very few exceptions, these 
territories are all fully occupied, and the engineering surveyor, in pro- 
jecting lines of railways at the present time, must make up his mind to 
wind along hills and over mountains. Not only the ground is broken 
in every direction by chains of lofty hills, but out of these run numerous 



INTRODUCTION. V 

spurs and valleys which require close study before anything like a 
good line can be laid out amongst them, even after a particular general 
route of country has been determined on as the best, purely from an 
engineering point of view. In such districts as are now referred to, the 
hills very commonly rise and fall 50 and 100 feet within very short 
distances, such as 100 or 150 yards; not only is it necessary to have 
levels over such ground, so as to avoid as much as possible very heavy 
works, but the pass has often, and indeed most generally, to be kept in 
view, whether it be very high or very low ground ; and not only the 
ground rises and falls in numerous places at the rate above mentioned, 
for distances of 100 and 150 yards, but often also at the same rate for 
ten times such distances. 

Again, before the general route above referred to can be determined 
upon, the country for a mile or two right and left, and often much 
more, requires examination, not merely by the eye, which in really hilly 
countries is very likely to deceive, but by some rapid instrumental ex- 
ploration ; and it is only when this has been done that the best line 
generally can be discovered. The work more particularly referred to 
now, is railway work at home, where we have often a severe par- 
liamentary ordeal to go through ; this we observe advisedly, for unless 
we have opposition, it matters very little, except as regards expense, 
what kind of a line is brought forward. 

Notwithstanding all these difficulties, however, which have sprung up 
naturally, and simply from our having to project our works under cir- 
cumstances generally so very different to those of twenty and thirty 
years ago, we adhere, with only a few exceptions, to exactly the same 
instruments, and the same mode of using them as we did then. The 
reserve, however, of a few exceptions has been made, because there are 
engineering surveyors who have adopted a totally different method of 
going to work, and mostly they are well and profitably employed ; but in 
subjects of this kind we cannot refer to exceptions, and we can only deal 
with the general state of things as we meet with them. 

The only instrument still generally employed for getting explore levels, 
even over the most hilly country, is only and simply the level in its ordinary 
form ; and, however expert the observer may be, he will not get over a 
hundred feet rise in much less than six observations : with the theodolite 
this is done at one sight, that is, with five-sixths less trouble and time. 
The ordinary mode of using the level for trial levelling, is to begin at 
some particular point, and to wind up and down with instrument and 
staff along the sidelying ground proposed to be adopted, and so get a 
few levels right and left, these being referred to in the level book, and 
on a plan by letters or numbers. One trial line having been got over, 
another line is tried in the same manner ; but, from the nature of the 
instrument in its simple form, the work is slow, and in hilly countries 
confined to very narrow limits. 



VI INTRODUCTION. 

Two or three instances which have occurred within the author's ex- 
perience, will perhaps tend to explain the different results that are to 
be obtained from trial levelling with the theodolite, and with the level 
in its ordinary form. 

It is now some years since, that a line of railway was laid out, and 
even stumped out, through a mountainous country, and the construction 
of which would have involved about 2| miles of tunnel through a very 
hard rock, containing large quantities of water ; this was independent of 
very heavy cuttings and some lofty viaducts. The works altogether were 
so expensive that some thoughts were entertained of abandoning the 
whole concern as not likely to pay. Let it be distinctly understood that 
the men who had laid out this line were thoroughly able and experienced, 
but the only instrument they had used was the level ; for some six or 
seven miles of approach to the tunnel, they were confined in the gorges 
of hills rising some four or five hundred feet on each side, and they 
could not get out of them. 

Under the circumstances above mentioned, a new order of things was 
established, and the theodolite was brought into operation for trial 
levelling. In about three weeks a new line was found ; two short tunnels 
were substituted for the long one above referred to, with practicable 
works of approach. 

On another occasion, of much later occurrence, after about six weeks' 
trial levelling, with the level, by a gentleman of first-class experience 
and abilities, plans and sections were deposited for a short line, which 
showed two tunnels, one of which was upwards of a mile and a half in 
length, with very long and heavy embankments on each side, one of 
which, for a considerable length, was 80 and 90 feet deep. The deposit 
was made, but no further motion was taken in the matter ; and not only 
this, but a line between the two places was given up as impracticable. 
Under this state of things the subject was taken up by another engineer; 
he trial levelled for a line between the two same places, but with the 
theodolite, and in a short time he obtained so many levels over an ex- 
tensive area, and over totally different ground, that he obtained a line 
with only a quarter of a mile of tunnelling, all other works being of 
quite an ordinary character. 

The writer will mention one more instance to show how easily the 
eye, even of a well-practised man, may be deceived in the matter of 
levels in a hilly country. A professional man of extensive practice had 
been told that in a particular place, through which he was running a 
line, he would there have a tunnel; but he was quite satisfied, from 
what he could see, that he should only have some 40 feet of cutting. 
When, however, the deposit was made, the section showed 300 yards of 
tunnelling, with a depth of 110 feet. 

The above instances have only been given to demonstrate practically 
to those who are not in the habit of using the theodolite for taking trial 



INTRODUCTION. VH 

levels, that the practical application of the instrument for this particular 
purpose has led to most important results ; and it was only because the 
writer had had most satisfactory experience on the subject, that he cal- 
culated the tables given in this volume, and which are equally applicable 
to the best and most accurate style of surveying, that is, surveying by 
traverse. This in no way refers to Parliamentary work. 

As regards these tables and theodolite levelling, it is now about two 
years and a half ago that he had occasion to take some levels through a 
valley amongst the chalk hills in the south of England ; besides the 
main line there were 37 cross-sections, each of which was about half a 
mile long, each falling from 350 to 500 feet, and then rising 500 and 
600 feet on the other side ; in a week, thanks to the theodolite, the 
work was accomplished, and, with the assistance of the tables, then in 
manuscript, it was very rapidly cast out, reduced and plotted, just in 
the same way as in the ordinary level book, angles of depression and 
elevation being taken, instead of heights in feet, for back and foresights. 

To the practised engineer, it must, of course, be needless to explain the 
manner in which the levels for a section are taken with the theodolite ; 
but the writer having met with many who really had no idea about it, 
he will'not apologise for now giving a full explanation, the more so that 
such matter is always useful to students, and will in all probability 
become more so at some future time, when theodolite levelling will 
become common practice. 



LEVELLING WITH THE THEODOLITE. CASTING-OUT 
LEVELS AND EEDUCING BY THE USE OF THE 
TABLES. PLOTTING SECTION. 

Let a o b be an angle of elevation of 20 degrees, measured with the 
theodolite placed at o, whilst a staff has been held at a ; and let the 
distance from o to a measure 100 feet, o a= 100 feet is only the length 
measured along the surface of the sloping ground ; b o is the true hori- 
zontal distance, and b o is the cosine of the angle of elevation ; and a b 
is the difference of level = to the sine of the angle of elevation. By 
means of the tables we get the lengths of both these required lines. At 
page 64, we find that for the angle of 20 degrees, and for the measured 
length 100, the horizontal distance for difference of levels is 93'969 ; 
this will be equal to b o ; and at page 65 we find that the difference of 
level* for this angle of 20, and measured length of 100 feet, is 34*20 ; 
this will be equal to a b, and will give the rise, or height of A 
above o. 

We will now apply this to the diagram of a section, p. ix. ; 1, 2, 
3, 4, 5, 6, are the stations for placing first the levelling staves, and 



VU1 



INTRODUCTION. 



then the theodolite ; for instance, the level of the ground at station 1 
having been previously ascertained, the staff was held at station 2, and 
the theodolite set up at station 1, paying proper attention, of course, to 
the verniers of the vertical limb and to the bubbles. The centre of the 
instrument is found to be 4*10 feet above the ground; then the telescope 




is directed by vertical motion to 4-10 on the staff held at station 2 ; the 
vernier is clamped, &c, and the angle of elevation is read off, 9 50' 
entered in the book, and the distance is measured along the sloping 
ground, 410 feet. The theodolite is then removed, a staff left behind at 
station 1, and the instrument carried to station 2, the staff from which 



INTRODUCTION. 



** /"^ 


0*5 


\. /'Jr 




(m 


eoo/e 


i !"'' 




1 /." 




' iiif ' 

' Hi 

' jilt i 

' Hf 1 






6SW 




SS'O^ 


/ lr 


ES 09E 


/ JM 








896 







S-6IS 



A3 



:: 7 ". .:.:::" 




to station 3; the t he odol it e is then ptupeil j set up over 
i-.i- :~ - : :'-r Lr :_"-: :: :'-r :zr.n~ :-. --' .-: :"_" _":"--: : - is - :~ : : -.- i 
to be 6-1 feet; then die telescope is directed to 5*1 on the staff held at 
station 1, and die angle at depression on therertical limb should be 
found to lead exactly 80 ltf-SO 9 9 50*. The telescope is now 
*mwm^A to die staff at 3, the angle of deration read off, entered 
in the book, and die distance from station 2 to station 3, equal to 
800 leer, is measured and also entered. The instrument is then removed 
2, some peg or mark being left dure, in order that the 
from station 1 may find dm exact spot The 
-; vz-;;z :. :-z : r: : rr'.r f " m; - 
the staff from station 1 being now held at station's, and the 
of the instrument being 4*15 feet above the ground, die telescope 
is directed to 4'15on die staff at 1, and die angle of depression is read 
off and entered. The telescope is now turned to the staff held at 4, and 
directed to 415 (the height of the instrument above the ground); the 
vernier is again damped, &c, &c; the angle of depression is read off 
from the limb, and entered in the book, and the distance, 405 feet, 
n :>-:- : l.zi 'z, _t- ;z : rr- I \. =.:-. 

The theodolite is now removed to station 4, whilst the staff is brought 
forward from station 2 to station 3, and the other staff is carried for- 
ward to station 5; die instrument being now placed at station 4, we 
take the angle of devotion on to the staff held at station 3, and then the 
angle of deration to the staff held at station 5, exactly in the manner 
already explained, and we ly^i g r w m jw thin , nuimw tn i\u. end of the line. 
Let us now refer to the field-book in which the observations am 
canoed. 



nastiaHi 


For Angle 


Bsi 


Fall 


LengBa 


-, 


Tlpfcet 

Dfafc. 


Bsaaeej 
Lsaf4H 












24:: : 


Itafc 

5000 






9-50E 


;: 




410 


si i n 


04 5 


Mi 


80-10D 


2-20E 


:-:: 




800 


34259 


89 1 


799 


87-40D 


10-15D 




72-07 


4 5 


270-52 


6603 


398 


79-45 E 


9-15E 


90 01 




560 


380-53 




553 


80-45 D 


2-35 E 


**>li 




782 


395-68 


7934 


781 


87-25 D 


7-15 D 




:; -M 


809 


319-33 


8534 


801 


83-45E 

















It will be observed that the back angle is a complete check upon the 
whole of the field-work. 
The rise and fall are obtained from the tables of 'Differences of 



IXTKODUCTCOX. XI 

Levels,' and the reduced lengths from ! Horizontal Distances for Diffe- 
rences of Levels,' merely by removing the decimal point to the right 
or left. 

The levels having been cast out, and reduced in the ordinary manner, 
and the reduced lengths added np in the column ' Total Reduced Distance/ 
the section is plotted in the usual manner. 

It will be observed that in the diagram explanatory of the mode of 
plotting the levels, only the leading points have been noticed on the 
section : small inequalities are quite secondary considerations in taking 
trial levels over a hilly country, but there is nothing to prevent inter- 
mediate depressions in the ground being noticed on the flypage. 

It will also be observed, that besides the angles of depression and 
elevation taken along the main line, we may also take observations right 
and left, the levels so obtained being quite as valuable for our purposes 
as those obtained from the main line. It is indeed the great facility 
with which these side levels are obtained by the means of theodolite 
levelling which makes the system so valuable ; from the rapidity with 
which the work is done, a difference of 200 or 300 feet in levels, or 
much more, being obtained at one sight, quite as easily as 8 or 10 feet 
with the ordinary level ; and when the instrument is supplied with a 
micrometer, the distances are read off rapidly, quite near enough to all 
intents and purposes, without chaining. In the diagram and example 
of field-book given here, no reference is made to side levelling, in order 
that there may be no confusion in the elementary explanation of elevation 
and depression, and the corresponding rise and fall, and reduced distance. 
what has been just said, it cannot fail to be observed, that for ob- 
taining levels over the ridges enclosing large areas of watershed, the 
m is very rapid, and equally valuable for taking cross sections in 
very sidelying ground, in matters of deviations. It is by these means 
that a great number of levels above a given datum are written in on 
maps or plans ; and as regards railway engineering, there then remains 
but little to do in determining the direction of a line, in ascertaining 
pretty accurately the nature and extent of the works, as well as the 
gradients and curves to be adopted. "With such documents at hand, it is 
easy to avoid sending in ill-studied plans and sections. 

But very few engineers, if any, were better acquainted with all the 
details of engineering field-work than the late Mr. Gravatt ; and he was 
perfectly aware that, even in his working-days, the level by itself was very 
limited in its capabilities for trial levels, and to increase its usefulness, for 
the purpose of trial levelling and cross sections particularly, he added the 
appliances shown in the accompanying diagram, in which it will be seen 
that a. and b are two plain sights, which are so contrived that they are 
shipped and unshipped with the greatest ease ; a. has a vertical slit and 
two horizontal ones : b has a fixed vertical horsehair, and is also pro- 
vided with a slide, d, carrying a cross-hair, which intersects the vertical 



201 



INTRODUCTION. 



horsehair higher or lower, according as the slide is moved up or down. 
The slide n is also provided with a vernier on each side of the broad 
arrow ">, by which the divisions engraved along b are subdivided into 
tenths and hundredths. The dotted line, de, shows that this contrivance 
affords a most ready means of obtaining the rates of inclination of any 
sidelying ground, or, as will be presently seen, any difference of level. 
The depth between the horizontal slits of a is made exactly equal to 
the whole of the divisions on b, which whole is made by the maker 
exactly equal to some decimal fraction of the horizontal distance between 
a and b, which in the instrument before us measures exactly 10 inches. 
The whole of the divisions of b is equal to 2 inches, or of the dis- 
tance ab ; one half, therefore, of the divisions is equal to 1 inch, or i 




of the distance ab ; and as this inch, or 
equal parts, each subdivision is equal to $ 



r x 5 of ab, is divided into 10 

of ab: two subdivisions 

j n , and twenty will be f ; and these 

rise or fall per hundred (any unit of 



hundredths will give the 
measurement) horizontal. 

The instrument is used in the following manner. "When an observa- 
tion is required to be taken, a staff-holder is sent on to the given spot ; 
if an elevation is to be taken, the observer applies the eye to the lower 
horizontal slit, and the cross-hair of the slide d is made to coin- 
cide with that reading on the staff which is equal to the height of 
the instrument above the ground ; there only remains to take off the 
reading. In the diagram, the cross-hair intersects above the 12th divi- 
sion, and by means of the vernier (the divisions of which are too small 
to be shown in the figure), we find the subdivision to be -53 ; then the 
whole reading will be 12*53, which means at once that the ground rises 
at the rate of 12 - 53 per hundred horizontal as, for example, 12'53 feet 
per hundred feet horizontal. 

If an angle of depression is to be taken, the eye is of course applied to 
the upper horizontal slit. In the figure before us, with the slide still at d, 



INTRODUCTION. Xlll 

we find the arrow intersects a little below 7 subdivisions, and the excess 
we read off by the vernier (the upper side of the arrow) to be *47 ; the 
reading will therefore be 7*43, which means that the ground falls 7 '4 3 
feet per hundred feet horizontal. 

Now, we have observed above, that 'the cross-hair of the slide is 
made to coincide with that reading on the staff which is equal 
to the height of the instrument above the ground.' It may be added 
that, for all ordinary purposes, it is unnecessary to use a levelling- staff; 
it will be generally sufficient to send a man to the required spot, where 
he may hold up a piece of white paper at the height of his neck, or 
thereabouts, according as the instrument is higher or lower above the 
ground. For short distances, this will answer all practical purposes, 
where rapidity is more requisite than extreme accuracy of fractions of feet. 

An approximate level may, however, often be required for some con- 
siderable distance. For instance, let us suppose that an elevation has 
been read off of 27'47, and that the distance, measured along the sloping 
ground, is 460 feet ; required the total rise, and the horizontal distance 
from the observer to the point observed. Refer to Table I., and under 
the column ' Eise or Fall per Hundred Horizontal,' look for the given 
reading 27*47, or the nearest to it; we find this, or 27'42, at page 15, 
and it coincides with the angle of 15 20' ; now look for this angle in 
Table II., where we shall find it at pages 54 and 55 ; the angle of 
15 20' gives for 400 feet, difference of level, 105*77 
and for 60 feet 15-86 

Total rise or difference of level = 121*63 

Similarly we find the horizontal distance : 

For 400 feet, horizontal distance, 385*76 
For 60 57*86 

Total horizontal distance from] _aa<>.g<> 
instrument to observed point j 

In this instrument of Mr. Grravatt's, as made by Archbutt and Sons, 
the plain sights also enable an observer to take a bearing, or horizontal 
angle, with considerable accuracy, whilst the divisions on the cap or 
sunshade will enable him to take approximate angles of elevation or 
depression, which will often be found exceedingly useful. 

To the young practitioner and student, and to those generally who 
have never taken levels by any of the means here mentioned, it may be 
as well to make a few observations as regards the above example. 
The rise per hundred feet horizontal wc find to be 27*42, and the 
measured distance along the slope is 460 feet ; if 27*42 had been mul- 
tiplied by 460, we should have had 126*13 for difference of level, or an 
error of about 5 feet. This is mentioned to make it perfectly intelligible 
that the readings we get on the scale, are the ratios of rise or fall per 



XIV 



INTRODUCTION. 



hundred feet horizontal ; in the next place we may add, that of course, 
in taking the observations, it is necessary that the bubble should be 
exactly in the centre of its run, in the same -way as though the observer 
were taking ordinary levels. 



THE ELEMENTS AND PRACTICE OF TRAVERSE 
SURVEYING. 

The correct practical principle of working a traverse on the ground 
consists of the best method of reading the angles round any regular or 
irregular polygon, and measuring the lengths of the sides. From these 
angles and lengths certain calculations are made, which enable us, with 




no other instruments than a straight-edge and set-square, to lay the 
work down on paper with any degree of precision. Table II. gives these 
calculations all ready to the surveyor's hand. 

Let a o e be a regular octagon, which we propose going round with 
the theodolite, starting from a. Let a n be the magnetic north ; zero on 
the horizontal limb is made to coincide exactly with thfl needle ;* in tha 
next place, the angle nab is taken, which will here be 22 30'; 
90 22 30' = 67 30' = the angle b a f, to which bf is the sine, o* 
departure, and a f the cosine, or latitude, given in Table II., as already 
fully explained above. Now, in the regular octagon, each of the angles 
at the circumference, that is, a b c, b ce, ceh, is equal to 135 degrees. 

The intersecting angles at b, = 360, are made up of abd, = 180, 

* In Mr. Hoskold's Transit Theodolite, constructed by Messrs. Archbutt, the 
compass is nearly twice the ordinary sue, and quite free and open, so that it can 
be read very accurately. 



INTRODUCTION. 



xr 




xvi INTRODUCTION. 

plus abc, = 135, and dbc, which will be equal to 45. It will be the 
same thing, of course, at c, e, &c, as in the regular octagon given the 
angles at the circumference are all equal to each other. 

We will now return to the theodolite, which we have left all clamped, 
and reading 22 20'. The length ab being measured, the instru- 
ment is to be removed to station b, and there set up exactly over the 
point b, which is done by the shifting of the legs, so as to make the 
plumb-bob hang exactly over the right point. The next adjustment is 
to bring the bubbles exactly to the centres of their runs ; this places 
the instrument in horizontal adjustment, so that the angles taken shall 
all be horizontal. This is effected by means of the parallel plate screws, 
two of which are shown in the figure at a and b. The instrument being 
correctly placed at b, we have now to bring the reading 22 30' to bear 
exactly on point a, where, of course, a pole is held up, care, however, 
being taken that the intersection of the wires of the diaphragm shall 
be exactly on the foot of the pole, whilst the vernier, as last fixed on 
the limb, remains perfectly untouched. 

To do this, the clamp c is slackened, which allows the whole of the in- 
strument to be turned round bodily on its axis, without any portion of 
the upper part of the instrument being moved in the least degree. The 
theodolite is now to be turned round, whilst the observer looks along the 
upper telescope, which he directs towards a, or through the plain sights 
s, s ; when the intersection of the wires of the diaphragm* (which, for 
the sake of brevity, we shall in future call the sight) pretty nearly 
coincides with the station a, the clamp c is tightened, and the 
contact of the perfected sight with the foot of the pole at a, by means 
of the tangent-screw d, which allows of the most delicate and regular 
horizontal motion of the instrument. 

This perfect contact being effected, we now release the verniers, 
which are shown at e, by slackening the upper clamping-screw f ; the 
telescope is now turned round to station c, and when the sight is nearly 
in contact with the foot of the pole, screw f is tightened, and, by means 
of the tangent- screw, the contact of the sight is perfected. "We can 
now take off the reading of the vernier on the limb, reading with perfect 
accuracy by means of the magnifier i. The magnifiers in this instru- 
ment are, by a particular contrivance, made to move with the greatest 
possible convenience, which is a most important thing in getting an 
accurate reading on the limb. In the present instance, the reading will 
be 247 30'. The length of bc, being measured, the instrument is 
now removed to station c, with the reading on the limb (247 30') left 
untouched. 

* In order to see the wires of the diaphragm clearly and comfortably, it is neces- 
sary to draw out the eye-piece G very gradually, until the wires appear sharp and 
well defined. This must be done delicately, as even the sixteenth of an inch back- 
wards or forwards makes a great deal of difference. 



INTRODUCTION. XV11 

The theodolite being now set up at c, in the same manner as at a and 
b, the clamp-screw c is slackened, the upper telescope is turned on to 
pole left at b, clamp-screw c is then tightened, and perfect sight com- 
pleted by means of tangent-screw d. Now release clamp-screw r, turn 
the telescope on to e, tighten r, and complete the contact of sight by 
means of tangent-screw h. The reading on the limb will now be found 
to be 112 30'. This operation is completed until we have gone over 
the ground from end to end. 

Let it now be observed that the reading at b was 247 30'; this, 
deducted from 270, leaves 22 30' = to the angle cbl, of which cl is 
the sine, or departure, in the tables, and b l the cosine, or the latitude. 
The reading at c was 112 -30'; deducting this from 180, leaves 
67 30', of which l e is the sine, or departure, and l c the cosine, or 
latitude. 

General Kule. Where the reading ia less than 90, subtract the 
reading from 90, which will leave the angle required ; when the reading 
is more than 90, and less than 180, subtract the reading from 180, 
which will give the angle required ; when above 180, and less than 
270, subtract the reading from 270 ; and similarly, where the reading 
is above 270, and less than 360 deduct the reading from 360 : in 
each case the remainder will give the angle required. 

In the practice of traverse surveying we always make the reading 
5', 10', or 15', &c, according to convenience, by moving the poles, or 
making our marks on walls, &c, a little to the right or left; this will be 
found a great practical advantage, inasmuch as it does away with all 
fractions of minutes, and increases the clearness of reading, a matter of 
the greatest importance in traverse surveying, for the special purposes 
we are now considering. 

It is to be observed that in the usual practice of traverse surveying, 
we measure the sides and angles round any polygonal figure, regular or 
irregular, and that in doing so we go as far north as we do south, 
and as far east as we do west, and that consequently the ' southings ' 
are equal to the 'northings,' and that 'eastings' are equal to the 
V westings.' 

Now the ' Differences of Latitudes,' or the northings and southings of 
any line, are the distances that the ends of lines measured round any 
polygon are north or south of the other ends. 

The ' eastings ' or ' westings,' or departures of any lines, are the per- 
pendicular distances from one end of the lines to a meridian, or line 
passing south and north through the other end, the ' meridians ' being 
parallel lines supposed to pass through every station on a survey. In 
any polygon, regular or irregular, the sum of all the interior angles is 
equal to twice as many right-angles as the figure has sides, less four 
right-angles. 

As observed above, and as may bo seen by referring to the figure at 



Xviii INTRODUCTION. 

p. xiv., whether we consider the regular octagon or the circle, in going 
round the polygon, we go as far north as south, and as far east as west ; 
therefore, when we reduce the ' northings ' and ' southings ' of all the 
lines from the tables of Difference of Latitude, and similarly when we 
reduce the eastings and westings of all the lines from the Tables of De- 
partures, we at once have proof of the accuracy of the work, since the 
northings will be equal to the southings, and the eastings equal to the 
westings, if the chaining has been correctly done. 

In the same manner, we shall have proof of the angles having been 
correctly measured, because all the interior angles will be equal to twice 
as many right-angles as the polygon has sides, less four right-angles, or 
180, if the theodolite has been correctly used. There will, however, gene- 
rally be some two or three minutes difference, even with the most careful 
work, unless some particular plan be adopted, such as that which has 
been mentioned above, of making the readings 5', 10', or 15', &c, by 
making our marks accordingly. In the description of work to which 
we have been more particularly referring to, a difference of two or three 
minutes might be of considerable importance ; at least for a working 
survey amongst buildings we should object to it, and the more so that 
it may be avoided; but in country surveying, or where looking such 
minute accuracy would be loss of time, it is usual to divide the difference 
or error over the work. 

In the example we have given of traverse surveying at p. xxi., it 
might be very inconvenient to have to go round ; but the work may be 
proved by going over the work a second time, but backwards, so that we 
shall still have our northings equal to southings, and our eastings equal 
to westings. 

It is very possible that to many this going over the lines a second 
time may appear fastidious, but in fact it consumes but very little time, 
from the work having been already all set out ; and, in the next place, 
it removes all doubts from the mind of the surveyor, as well as from 
that of the chief for whom he may be working. Where, on the contrary, 
the work has not been proved, the surveyor will feel perhaps for months 
afterwards uncertainty about his plans ; and if any hitch occurs in the 
setting out of the works, he will be sure to feel no small amount of un- 
easiness, and attribute the difficulty to some possible error in his work. 

As to the degree of accuracy which we have considered necessary in 
town lands surveys for the purpose here contemplated, we will only 
point out that the mistake of a foot may bo of far greater importance 
than a foot error in a cutting or embankment on an ordinary section, 
for in this last case it would only involve some difference as to a greater 
or less quantity of earthwork ; but serious as such a blunder would be, it 
would be trifling compared to the setting out works so that 'any por- 
tion of them might fall a foot within instead of outside of a building. 
The engineer who has had to set out works through ground thickly 



INTRODUCTION. XIX 

covered with buildings, knows all the importance of a correct plan for 
such purposes. 

In the theodolite we are now referring to, it will be observed that there 
is a lower telescope, which is so set that its axis perfectly coincides 
with that of the upper telescope, when at zero ; there is also a diagonal 
eye-piece, so made that when screwed into the telescope, it admits of 
its being pointed directly vertical, and of observations being made in 
such direction with as much facility as if the glass were pointed hori- 
zontally; this is a considerable advantage, as it allows of underground- 
works being connected in the most direct manner with the surface. 
Further, by the special construction of this instrument, when any 
particular point has been found on the surface, there are means of 
setting out from such point any angle taken underground, without 
making any alteration on the vernier plate : that is to say, that leaving 
all screws fast clamped, the instrument may be brought from under- 
ground works to any fixed point on the surface, and any particular angle 
set out or checked, one or both sides of which shall exactly coincide 
with fixed underground lines. The vernier zero being made to coincide 
exactly with zero on the limb, and the instrument turned round until 
the needle points to its own zero, both telescopes will be in the same 
vertical plane ; any angle being now taken may be transferred to the 
surface, and the large size of the compass will show the slightest 
deviation that may have taken place. 

In ranging curves, the addition of the second telescope is important, 
inasmuch as it enables the observer to be always satisfied that the zero 
of the instrument, during the course of any number of observations, has 
not deviated from the direction of the tangent. Any want of check on 
such deviation is often a source of error in setting out long curves, and 
is often caused by the observer moving about the instrument without 
sufficient care, or by his attempting thoughtlessly to move the vernier 
plate without having first released its clamping-screw. Such errors are 
often carried to the end of the curve, where they become greatly in- 
creased ; they are frequently then rectified (!) by what is termed easing 
the curve, which simply means that at one end a curve is often of a 
radius 5 or 10 chains shorter than it should be. 



PLOTTING TOWN SURVEYS BY TRAVERSE 
TABLES. 

Since the introduction of railway and other great engineering works 
into the very centres of large towns as, for instance, of the railways now 
constructed or about to be constructed in the parts of London covered 



XX INTRODUCTION. 

with valuable property the accuracy of working surveys has become of 
the very highest importance. Not only is it by these plans that it is 
determined whether buildings and parts of buildings lie on the line of 
works, but often there are no other means of setting out these works 
than by the working plans. 

Not only important and expensive working drawings are got out ac- 
cording to the plans, and often become of no value if these are wrong, 
but the works themselves are frequently set out from the plans only, and 
immense difficulties must be the consequence if they are incorrect. Some 
considerable length of curve, or straight line, may be laid down on a 
plan drawn to a very large scale, and properties are often purchased in 
portions only, and not consecutively, and the works are of necessity set 
out from the plans and commenced ; and if they have not been correctly 
surveyed, and also correctly plotted, very serious consequences may re- 
sult : not only may we find that we interfere with buildings we did not 
contemplate touching, but the relative position of the centre lines may be 
wrong ; and where masses of buildings intervene between works com- 
menced in two different places, it is often very difficult to check 
satisfactorily the operations of setting out by work done on the 
ground. In short, the work is altogether different from ranging curves 
and straight lines through fields, or even villages and small country 
towns. 

The writer believes that, generally, it is the system of 'plotting the 
survey which is at fault. If the ground is well traversed with a good 
theodolite, and the lines carefully chained, this part of the work can 
scarcely be otherwise than satisfactory ; but the means adopted usually 
for laying down upon paper long lines (often from 15 to 30 inches and 
more) exactly at the angles, the writer considers unsatisfactory. The 
instrument used for laying off angles is the protractor, perfect it is 
admitted within certain limits, and the same may be said of the large 
parallels employed in the next operation of plotting a traverse survey 
in the usual manner. For ordinary purposes nothing can be better ; but 
an extensive survey, plotted to a large scale (and 20 feet to the inch is 
not too large for the purpose we have now in view), requires altogether a 
different method in order to attain the accuracy necessary for important 
works. 

By means of the Traverse Tables, a good survey may be plotted in 
the same manner and with the same amount of accuracy as a section, as 
the accompanying diagram will explain. 

From the Traversing Notes, the Angles 1, 2, 3, &c, on the accom- 
panying diagram, are obtained, the lengths a b, b c, c d, &c. being 
most carefully chained. To illustrate the method of plotting, it will 
be sufficient to give one example, as the work otherwise would be 
merely a repetition of what has been said under the head of Levelling 



INTRODUCTION. 



XXI 



with the Theodolite,' pp. vii.-viii. Angle 1 is 33 2 5', and the measured 
length up the side of the street is 422 feet ; at page 91 (Table II.) we 



Angle 1=33-25 
2=50-40 
1=58- 
4 = 64- 
5=45-15 
6=47-15 
7=26-25 
8=49- 5 




have Departures ' corresponding to ' Difference of Levels,' and for 
33 25' we have for 

feet. feet. 
400 = 220-29 
20= 11-014 
2= 1-1014 



Horizontal Distances for Dif- 



422 = 232-4054 

and for ' Latitudes, ' corresponding to 
ference of Levels,' we have for 

feet. feet. 
400 = 333-88 
20= 10-694 
2 = 1-669 
422 = 352-243 

Both these results are shown plotted on the diagram for Angle 1, and 
similarly for the other angles. 

When the first portion of the survey, as from 1 to 8, has been completed, 
the smaller areas may be enclosed and plotted in the same manner. It 
will be seen that by these means, the most minute accuracy is ensured 
for the whole as well as for the details of the survey. When the work has 
proceeded thus far, the centre line of the works should be laid down, and 
the details of the ' blocks' should then be filled into the width required. 



CONTENTS. 



PAGE 

Pkeface to the Second Edition . . . . . iii 



INTRODUCTION. 

Laying out Lines of Railways. Importance of Trial Levels as 
shown practically in many instances ...... iv vii 

Levelling with the Theodolite by means of angles of Elevation or 
Depression for the purposes of Trial Levels. Kapidity with 
which the comparative Levels over a great extent of country are 
ascertained vii viii 



Practical explanation of the System. Use of the Theodolite. The 
Field-book; Casting out and Reducing Levels from angles of 
Elevation and Depression by means of the Tables and Plotting 
Sections. Example ix xi 

Mr. Gravatt's latest improvements in the 'Dumpy Level,' for 
Cross Sections and Trial Levels. Practical examples and use 
of the Tables xi xiv 



Traverse Surveying; Explanation of the System. Use of the 
Theodolite. Importance of Traverse Surveying in preparing 
Working Surveys of ground thickly covered with buildings. 
Practical examples. Minute accuracy with which the work may 
be plotted without instruments and merely with a Straight-edge 
and Set-square. Example of the practical use of the Traverse 
Tables. General Rules xiv xxi 



CONTENTS. XX111 



GENERAL EXPLANATION OF TABLES 

I. II. AND III. 5-9 

TABLE I. 

Tabic of Inclinations and Gradients for showing at a glance on 
plans the Kise and Fall of Sidelying Ground, either from angles 
of Elevation or Depression, or by means of Mr. Gravatt's im- 
proved ' Dumpy Level.' Co-efficients for Setting out Slopes of 
Cuttings and Embankmenls. Eeduction for Chainage along 
Sloping Ground over hilly countries, where more than ordinary 
care is required 10 23 



TABLE II. 

TRAVEESE SURVEYING AND LEVELLING WITH THE 
THEODOLITE. 

Table for Plotting Traverse Surveying without calculations and 
without instruments, by the use of Straight-edge and Set- 
square only 

For finding at a glance the Differences of Levels, and the Corre- 
sponding Horizontal Distances, from angles of Elevation and 
Depression 

For Casting out Levels, reducing to Datum, and plotting Trial 
Sections from angles of Elevation and Depression taken with 
the Theodolite 24^-113 



TABLE in. 
SETTING OUT CURVES WITH THEODOLITE. 

Twenty-two Tables of Tangential Angles and Multiples for Set- 
ting out Curves without calculations, from 4 chains to 85 chains 
Radius, for the 66 feet, 100 feet or Decameter chain, with Eight 
and Left-hand readings on the Theodolite for 25 consecutive 
angles for each Eadius; Bend of Eails. Bends in 66 and 100 
feet for Trimming Foot of Slopes and Side Drains. Super- 
elevation of Eails. Tangents and Cotangents . . 114 143 

TABLE IV. EAILWAY CEOSSINGS 144 



XXIV CONTENTS. 

TABLE V. 
SETTING OUT CUEVES WITHOUT THEODOLITE. 

PAGE 

On the Principle of Tangential Angles, by Tangents and Corre- 
sponding Offsets, calculated for Field Use from the Sines and 
Versines of the Angles at the centre .... 145 146 

Practical Explanation of the Principle and Construction of the 
Tables, with Examples, illustrated, of Setting out Curves with 
the Theodolite and without. Overcoming obstacles on the Line 
of Curve on the latter system. Crossing Rivers. Method of 
finding a Station on a Curve from which the whole of such 
Curve may be set out 146 154 

Table for Setting out Curves without Theodolite, on the Principle 
of Tangential Angles, by Tangents and Corresponding Offsets, 
calculated for Field Use from the Sines and Versines of the 
Angles at the centres, from 4 chains to 80 chains Radius, for the 
66 feet, 100 feet or Decameter chain, and for 16 consecutive 
stumps for each Radius ....... 155 165 



CONTRACT EARTHWORK TABLES, AND 

MEASURING UP. 

Explanation of Tables 166169 

TABLE VL 

Earthwork Table up to 80 feet deep, for every 6 inches in depth, 
and for 10 different Formation widths .... 170 175 

TABLE VII. 

Earthwork Table up to 80 feet deep, for every 6 inches in depth, 
and for 8 different Slopes 176 181 

TABLE VIII. 

Table of Gradients, giving Rise or Fall, per mile, chain, 5, 10, 20, 
30 and 40 chains; and per 100 feet, 500, 1,000, 2,000, and 
4,000 feet, to facilitate the preparation of "Working Sections, and 
for checking without calculation the accuracy of Parliamentary 
Sections. . . . . ' . . 183189 

Note to Binder pp. 1 fo 4 are cancelled. 



EXPLANATION OF TABLES. 



TABLE I. 

The first columns of Table I. have been prepared to show at a glance, on 
either plans or cross sections, the rise and fall due to the angles of de- 
clivity of side-lying ground. As regards earthworks, the importance of 
this can hardly be over-estimated when we are laying down a line either 
for a railway, road, or canal, because it affords a ready means of ascer- 
taining depths of cuttings and embankments, and of making suitable 
alterations in the direction of the centre line of works. Generally, the 
information which we are desirous of obtaining on this point, is the 
difference of the levels right and left of a line at a distance of perhaps 
two or three hundred feet ; this is given at a glance by the tabular 
numbers, when the angles of acclivity or declivity have been taken ; 
thus column 2 gives the rise or fall per cent horizontal, all in yards, feet, 
or metres, for every five minutes of every angle of inclination, which an 
explorer may at once write down in his note-book without any calcula- 
tion whatever, and the surveyor may make the same observations in his 
field-book right or left of any of his chain lines, whilst making his survey. 
If these lines are laid down on the plot plan, the differences of levels are 
easily plotted at the same time, with all sufficient accuracy for the 
purpose in hand. In a hilly country, particularly, these notes on a plan 
afford the readiest means of avoiding as much as possible heavy cuttings 
and embankments. 

With the exception of the theodolite, which, however, is much too 
cumbrous to be always carried about for taking angles of inclination, the 
writer is not acquainted with any practically useful inclinometer, except 
that which he has used for many years past.* This consists of a semi- 
circular protractor, with a pendulum pointing to zero when the instru- 
ment is held horizontal ; it is numbered from zero to ninety degrees 
both ways, so that when used in taking an angle of elevation or depression, 
the pendulum at once reads off the observed angle, and with much 
greater steadiness and accuracy than might at the first glance be expected ; 
if the pendulum be sufficiently weighted, say, with about two ounces. 

With a six-inch semicircular protractor, with the vernier loaded, no 
difficulty will be found in reading off to three or four minutes, and for the 

* The writer, however, wishes to guard himself against any imputation of claiming 
either discovery or invention in so simple a matter, and is only desirous of making 
more generally known a really useful inclinometer for ordinary purposes. 



6 EXPLANATION OF TABLE I. 

short distances and the purposes for which the inclinometer could be 
used, this is abundantly accurate; the instrument is furnished with 
plain sights, the axis of which is, of course, made by the manufac- 
turer, parallel with the diameter of the instrument. Fig. 1 is a sketch 
of the instrument. It reads to twenty-two degrees, and as the line of 
sight ab is parallel to the ground line cd, twenty -two degrees is the angle 



Figl 




of inclination, and the table supplies the amount of rise for every 
hundred horizontal. The writer trusts that he may be excused for men- 
tioning for the information of the young engineering surveyor, that one- 
half of the cardboard protractors sold by our instrument makers may 
readily be fixed in a plain glazed flat case, and that with a pendulum 
attached it will make a very useful instrument for such purposes. The 
great advantage of such an instrument is the readiness and rapidity with 
which it supplies, with the assistance of the tables, the rise and fall for 
ordinary cross sections. 

The second portion of Table I. gives a series of coefficients for setting 
out slopes where the cross section is in steeply side-lying ground, of which 
the angle of inclination has been 'taken ; the writer considers that where 
the ground rises or falls rapidly, this furnishes a better mode of setting 
out the slopes of earth-work than the ordinary method by differences 
of leveL 

Let fig. 2 represent an embankment, 2 to 1 slopes, of 20'2 in depth on 
side-lying ground, of which the angle of inclination has been measured. 
Column 4 of Table I. gives the rise or fall per unit. Take this tabular 
number opposite to the angle of inclination, mvlti'ply it by 20-2, and the 
product added, to 20*2 will give the depth due to ab, and a b multiplied by 
the major coefficient, for slopes 2 to 1, gives the distance b c. On the 



EXPLANATION OF TABLE II. 7 

other side the first tabular number- multiplied by 20-2 is deducted instead 
of added, to get the depth d e, which, multiplied by the minor coefficient 
for slopes 2 to 1, will give the distance fe: observe, that in both cases 




the lengths be, and/e, are measured along the sloping surface and not 
horizontally, which ensures a much more accurate setting off where the 
earthworks are heavy, and the natural surface of the ground considerably 
inclined. 



TABLE II. 

Table II. is a traverse table for every five minutes of the quadrant 
which will be found a sufficiently close approximation for all surveying 
purposes, as we can always manage to lay out our work to five minutes 
and generally even to ten minutes. It is constructed so that the 
Latitudes and Departures are given in one page for lengths from 10 to 90, 
and of course by the mere removal of the decimal point one figure to the 
left, from 1 to 9, and similarly by the removal one point to the right 
from 100 to 900, and so on. 

Independently of its use for regular traverse surveying it will often 
be found useful in the field in getting round obstacles, as for instance 
in fig. 3, where a large sheet of water comes across the base line 
ab. From a set out any convenient angle bac, equal to, say 22 de- 
grees, and measure along ac, until the obstacle is so cleared on the 
other side that from a point c we may set out an angle acb of 68 
degrees, (22 + 68 being equal to 90). Let AC measure 1250 feet ; re- 
quired the length of ab. By table of latitudes we shall have for 22 
degrees, 

927-181000 

185-44 200 

46-36 50 

1158-981250 

oi 1158-98 feet for the length of ab, and if the angles have been properly 



8 



EXPLANATION OF TABLE II. 



set out, cb will measure 468-26, for, by the table of departures we shall 

have for 22 degrees, 

374-611000 
74-92 200 



18-73- 



50 



468-261250 

Table II. has been so arranged, that the horizontal distances and dif- 
ferences of levels due to inclination are very readily obtained in the same 




manner, when the angle of elevation or depression has been taken, and 
length along the sloping ground carefully measured. In the last example, 
for instance, if the angle of 22 degrees were an angle of elevation, and 
the distance 1250 feet, the length measured along the sloping ground, 
then we should have 1158-98 for the horizontal distance, and 468-26 feet 
for the difference of level. 

It will be needless to observe here, that in a case of taking levels by 
inclination, we should not recommend such a distance to be taken at one 
sight, and we have only done so here in order to show how the use of 
this table is applicable in both cases, with regard to surveying and 
levelling, and in mountainous countries, when a good theodolite is care- 
fully used, a great amount of country is levelled over very rapidly, and 
as regards cross sections the inclinometer mentioned above does all that 
is required very easily with these tables, as all calculations are avoided. 



EXPLANATION OF TABLE IV. 



TABLE III. 



Table III. has been prepared with a view of avoiding in the field all 
the computations of tangential angles in setting out circular curves. 
These calculations are simple enough, and yet troublesome in order to en- 
sure accuracy, for one error may involve the loss of many hours' field 
work ; besides, however rapidly they may be made, the time given to them 
will always be more advantageously devoted on the theodolite, and 
seeing that the chainmen do their work accurately, for unless the curve 
be well chained, there can be no hope of closing the curve satisfactorily. 
It will be needless to observe that the table is based upon the formula, 

1718*9 
-p ,. = Tangential angle for one chord. 

It will also be almost as supererogatory to observe that, generally speak- 
ing, in setting out curves, the first stump is upon a fraction of a chain. To 
make use of these tables with all desirable rapidity, it is only necessary 
to set out at first with the fraction of the tangential angle due to the 
fraction of chain ; when this has been carefully done, the instrument 
may at once be removed, and a considerable length set out from such 
station. 

For sharp curves it will be observed that the tangential angles have 
been given by half instead of whole chains, which will be found to give 
more satisfactory results for curves of short radius. 



TABLE IV. 



Table IV. is a table for railway crossings, which is too explicit to need 
any further information on the subject. 



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) tJ--oo votl O f^voti o I^tJ-M O l^rj-tl ooo votow onvo r}-tl Ooovo tort On 
* ^ r r*"^ * O m tnyo t^oo p tl tJ-voc^-Onm t4 tJ-vo oo On m to u-> t^oo O c< t}- vo 
I tototototo + Tj-T$-T4-^}-U-vovovovnvo vovb vbvbvbvbvb r-~.r^t^t-~. t^oo oo oo oo 



i rt-ONvoii l^toONVoovo rtoo rhOvo tl Onvoi-i r^toONVotloo tJ-O r->-to ovo 
I tl t* to tJ- rj- vo vovo t-^ f^OO 00 ON O O M >h tl to to rj- tJ- vnvo vo t^-00 OO On On O 
J t 00 00 00 00 OO 00 OO 00 00 00 00 00 00 00 ON On ON ON On On ON On ON On On ON On ON On ON On O 

OvoOvoOvoOvoOvoOvoO l oOvoOvoOvoOvoO , oOvoOvoOvoO , o 

M W^-Tj-mVl | MMCltlCOtO^-^J-volOi M M M d MM^^I^IO 

t}- vo 



noTSsajdga: 
jo safSay 


O ioO vo O vo O vo O vo O vo O vo O "lO wiO vo O vo O io O vo < 

h rt t) mm't ^uiio | h h m cl coMrj-<j-ov>| j 

vo n oo 
d el el 


02 

w 

IH 

ft 

ft 

1 

I 

g 

OQ 


s 

I 1 


^ o 

o 


MSN NVO VO VO irnnui^-^^-Mfm el el i-i w n O O O C\C\C 


oooooooooooooooooooooooooo< 


+3 

a 

"E3 

US 

O 


eJ^wwOOOOs Onoo 00000000 OvO i- el eo rj- tJ- u->vo NOO O < 
tsco On O i el to m rh vovo tsoo on O d eo -^- io^o tsoo On O co * 
m w n cl el el el e el d el el el el m w w m w w w + ^- + < 
'el el el el "d d d d d d d d d d d d d d d t< tl t) rt d d d i 


11 

s 


il 

^ o 
o 


<^-coeoeldiiOON OnOO 00 N NVO um^ ^- + m w r) d el m m O < 

no vo vo >0 vo vo vo inwuAirnrnAivuni^iounoininiriiounrnni 


oooooooooooooooooooooooooo< 


si 


el vooo m vo o vo o vo m N ^ n 0\sunwm el el el eo vo n On co I 
vo oo O eo vooo O eo vooo O covo oo h tj-no covo On el vooo w voo 
vo vovo vo vo vo t-~ r-~ s noo ooooooonOnonoooOmmumpj* 
m w m w w w m w to w w w en en Vo 'en Vo Vj- rj- '^}- rj- '-^j- '-^- Vj- '^f- Vj- * 


III 


vo ^J- d O oo vo 3" d Ooo N vo co d Ooo N vo tj- el w Ooo Nvo *t- 

W M + in vovO NOO ON On O hi cl m + ^- voVO NOO On O O i el to ' 


fe^uozuoH 

q-iiifl '-tad 

HM ao dsx^ 


N vo ^J- n O*oo vo ^}-el >-> On N vo eo d O On nvo rhtOM o On n vo 
N On -> co rj-vo 00 O el ^J-voNOn-h CO vovo 00 O el ^VO OO On m CO > 
OOOOONONO\ONONOOOOOOiniii-i.-icldeelelelcoco< 
^^^Tj-Ti-Ti-Ti-vovovovovovovovovovovovovovovovovovovoi 

b b b b b b b b b b b b b b b b b b b b b b b b b b 


uoi^'Biin OTI I 

jo op'a: 


vori-eoeoel m w o Onoo 00 Nvo vovorj-eoeoel wm O On Onoo N 1 
O O O O O O O O On On On On On On On On On On On On On Onoo oo oo OO 


IB^uozuoh 
pgjpuujj aad 
HBj jo asia 


t-- vo rj- n onoo VO ^J-M ii ONNVoeoel O On NVO ^ ro m o On N vo - 
f^ONM eo^j-vpoo O el tj-vonOnh eovovooo O el r}-vooo Oh eoi 
ooc^^^oNONONobbbb.bwwwMcleleleleleleoeo< 
^T' : r'^ _, T'4 _ '^-'^-vovovovovovovovovovovovovovovovovovovo 


eStmreqo joj 
uoiipnpail 


eooo vomoo + n N-^i-O Neoovo eoovo eoO NeoO Nrhn n< 
m r* co to ^(- vo vovo NNOO OnOnO h m el coco^}-vo vovo N No 

b b b b b b b b b b b b b b m '<- ' m L m i- , ^, ; 


uoissajdaa; 

PUB U0{l'BA9^a 

jo saiSuy 


OvoOvoO t oO ,J ^OvoOvoOvoOvoOvoOvoOvoOvoOvo 

| n h tl d m to >t ^- >ri i^ 1 h h n Mm^-^inv) , 

VO N oo 
el m 



W0<fl0 l o0>o0o0io0o0^0i0'o0io0>o0'o0>o0 l o0 l fl0 1 fl ', 
n h M wm^-^ioio | M M f) t) Cl M Tj- Tj- VO U1 j M M t) H com^^vowi 5 

On O 
c co 


eoooo nn t-.NO no vo no u-iu-iu-i^Tj-'tf-cocococoN c* h m m m *- O O O O On On 
c^- J~~- p^- t-~ t~-- t-^ jr^. t^~ j t r-~ j^ t~~. t t^ r-^ t . c t t^- t r~. c^~ c-^ t r^ t-- t t^ t-- r t-^ j-^ 

o b b b b b b b b b b b b b b b b b b b b b b b b boob b b b b 


"-> C-. On 1-1 cono oo O (<ho(J\wnm moo rt) O ^oo N t^ cooo cooo rj- O NWO5 

^^5- t 5 s M ^ "<*" ^^ t"- On O O CO tJ-nO NOVO h M tJ-NO Is O\0 d tJ- u-> r^ On O 

* * * * 1 1 ^ ^ 1" "^ "^ "^^ VO VO *C VO VO VO N (N ts ts ts tv CsM M OO 00 OO 00 OS 

t n n 'n k Vi V *n n ' V c< c* V V "n n Vi 'm V* V "n V V V* V> ' h V* v 


ON OnOO 00 1-nvO uivi*+MMfl f< m m O OnOO OO t-. f-VO VO NO inuiu-irj-ri-rj-coco 
COOO00OOOO0OOO0O0O0O0OOOO0OCOO0C0000C>OOOOOO00OO000OO0OOOO0OO0 

o b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b 


M 1/-.0 w-im MflMM OO i-< f* -+00 MVO MM in CO hi H M ifl N f) M rj- O O >i 
N m ON d NO Ovm N m ^ OMO N m u-iO tJ- On COOO COOO COOO COOO tJ- On io m ts M ON 
CO co co tJ- tj- t}- u-j iovp NO Np tstsOOOO ON p\0\ O O w M d W CO CO ^ tJ- u~>\p vp Jn Jn 


t) h O ON00 r-.NO w>T}-Ti-COfJiHwOOON ON'X) 00 S h. I--VO NONONONONONONONDNO 
mwt<1MM(fi^^^.^.^-^.^.^.^.^-^.ioioioinvnovnrno vr>NO no no no no no 


Mrt m ooo t--vo io t$- co c* <-i hi O Ooo t^vO v> u-i ^j- rj- co cl d m o O On onoo r-.oo 
c-. On *h co ^J-vo oo O d ^vo oo O c4 t^NO\M co u-> t>. on m co u~> r~- On O c* -^vo oo 

M m rj- ^ t)- + ^ in uno i^ u-iNO NO NO NO NO NO NN NN NOO OO 0O OO OO On On On On On 

b b b b b b b b b b b b b b b b b b b b b b b b b b bib b b b b b 


O u-> >tn tj- rj- co tf e* m O O On OnOO i> f-v vo its <$- rj- co co c* c m m O Onoc 00 NS 
ooooooooooooooooooooo t^t^iNiNtNrNrNrNr-.t^t^tNi^t>.t>.t>. t-.vp no vo vo no 


-O M i-i 00 fN.NO WtJ-MM m hi O 000 f-.NO ir> V"> %)- ^ CO c* p* M O On OnOO r-OO 
NCnw CO <^-nO OO O M nT'VO 00 O M ^'flNONw MU1NO\M CO vr> t>. ON O c* T^-vO OO 
:*> CO Vj- ^}- rj- rj- tJ- u-1 !/-> ii-1 io WINO VOVOVONONO ts (n N ts t-.O0 OO OO 00 00 On On On On On 


- 00 u-> cJ OnnO COO N^-mOO ioc O\N + m0O u-,c^ o tNTj-H OnNO -n)- >- OnnO CO w 
3NCN0 >i >-c c< M^^- IOVO NO r--00 OOONOww^tOTi-^J- w-i^O >0 r--00 ON p O w W 
-4 M "c^ Jq Vl "c> cJ 61 ci cl "cl d *N d C3 dCOCOCOCOCOCOCOCOCOCOCOCOCOCO'<4-r}-'4- 


^O l ^0 >oO vnO >o0 u^o *oO w-iO w-io v~> O ioO w-iO >oO >oO "lO "^O o 
i S t) mw^^ww | Miic4c4coro'4-<st-vnm| m m n mm^-^-uivi 

On O 

CJ CO 



noissajtclag; 
jo saiSay 


mo >oO no o wo w->o ""> O <oO >oO wO j-i O >oO vo o <flO 
| wMcJtftoto^Tj-ioioi n h wm^^uiui , m 

"-i p to 
to to to 


w 

H 
ft 

1 

i 
1 

O 

i 

pa 

02 


o 


si 

Je 

^ o 
O 


O\00 00 00 00 t^. t~~. t~~ t"^VO VO VO VO lOUH^l^lOTj-'+^-^'MMMfnrt 
f4t-)MMNMrlt4trtNNr<^NMNrJNN^NNNNN 

b b b b b b b b b b b b b b b b b b b b b b b b b b b 


.2,0 

Eg 


MH60* & n O\0O t^NO U-) t}- to IO00 o t* "+ t^OO 00 ON O O * NO w 

r> ^-ion onm pj ^vo oo O "4-vo oo w mioNO\M tovo oo O d "" 

ON ON O ON ON O O O O O J- * * el J* c* t* <M to to to to t$- -4- t4; 

e> c* eJ d N tototototototototototoiocoto'toeototo'toto"tot< 


3 


43 

si 

w o 
O 


fONdtHMOOON ON00 OO NN t^NO NO J-( V) tj- tJ- CO CO el el t d w 

totocococococoelcielclflelelcleieielelcleielcicieieipl 

ooooooooooooooooooooooooooo 


si 
11 

" o 
O 


el 00 tj- O t^ On m CONO iflmwiWMM ON00 u-> CO >-i ON00 t^. t~^ t-^ r}- hi 
W m 00 IOM 00*0 CO O OO NO + d 11 o OO t^t^-t^ l"--vO t"-~00 ON O cov 
00 On On p h el to ^ ^ novo C^.00 on On P -i p* to rj- nono t^. On O m 
u^v/^irivONONONOvONOVONOvONONOvOvO t^t^t^'t^V^V^t^t^t^.OOOO 


lis 


NNN t^OO OO ononO O m pi to to <$ vono t-^oo ON O * el to wnd 
NO t>-00 ON O ** pi to t}-vO 1^00 On i-i pi to rj- vr>\o N 0\ O *< el to ^ 

no no vo vo r-^t^t^.i>r^r^t--.t^ t-^oo oooooooooooooooo onononono 


I^nozuoji 

iraffjad 

HM ao asitf 


00 On On On On OnOO 000000000\00\OOOH()Hrlflt)MThvflW 
O N **- NO OO O d 'i-vo 00 O d t}-vo 0\m to vitNO\H rovi N Ovm c 

NO NO VO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ^O NO NO NO 

b b b b b b b b b b b b b b b b b b b b b b b b b b b 


uot^Burpui 

}6 o^Ba 


NONO >-0 U-> tJ- T$- CO CO d " M O O ONON ONOO OO t-.NO NO NO mi^^+c 

OVONOVOVONOVOVDVONONONONO U->NOW-)U-)W->W->NOVNlOU- ) U- ) W-lVOl' 


re^uozuog; 
pajpunjj agd 
IIBJ JO Dsja 


oo e>o\CTvc\ onoo oooooooooNONONOOOMdddddeoTj-u-iir 

O d ^-^O OO O J) "+NO MOM ^J-vp On m m in N On - phoNOnm c 
O O O O O i ii m w m pi pj "pi pi 'pi rotototo'to^J-Vj-Tj-Ti-'r^-loii' 
nOnONOnONOnononOnonONOnonONOnonOnOnonONONOnonONOvONONO 


aSBuraqo jeoj 
uoi;anp3'ji 


oono ro-iooNO -+M onno <J-rJ O NwmOoo^o <4-N O Nwmh o 
h jo +- >n yivp r--oo oo ono m pj Nf^74-No yo^p t--oo on on o >-i m ci 

"+^+ + + "t + + + + l fl>0>fl>'li'lTO>OU1viio'0 U-1VO NO NO NO 


uoTSsaidaa: 

pire uopBAajg 

jo sefSuy 


O l 'iO'io v oO vr >O l '^O l ^O , oO l oO l 'iO l 'NO n-iOw~>0*r>c 

I M M (i H MM^+IOIO 1 H H d ft MM^-^lOlfl 1 

o ! 1 1 

H CO 

to to to 



0^0'0"iO'flOiflOwO>JiO>OviOifl0 1 flO | flOwO l OviOw 



O os os os os osoo oo oo oo oo t^r^t--t^t^ t-^o no no 



MMNmmmmmOOOO 

t>rtrtiNc*rJtJNrtNtf.. 
J~ J^~ r-- t-~ j>- r c^ r^. t^ r-. t~- t-~ r^ r~- r-- r^- t-~ c-^ t-~ c^- t- t^- r~- j>~ t~^ r~~ t t~~ t^ r-~ j i>~ t 
ooooooooooooooooooooooooooooooooo 



* NO MM rj- Os *> >h no o-> r}- co t* w O 

r->. o n vin o n u-ioo o cono o\ t* vooo ., 

sj- i/s u-, u-> u-,vp so vo vo t^. ^ ( f^oo oo oo On On On O O O >- "- 1 c e* c to to ^r y- ft" 

W M M M M M M M M M M CO M M M M M W ^ ^ ^ V + ^ ^ ^ ^ "+ + + ^ ^ 



d-NO 00 O e* t~~ tooo cooo rj- to CO C* M o 
3- t-~ O rht-^O Tj- t>> ^OO M NO O &< 

-* r* co to rj- ^J- 



WOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOCOOOOOOOO 

o o o b b b b b b b '0 b b b b b b b b b b b 















u-> tf o -+00 pj 
m ^1- t^ c^ r^ co 
rt ?}- y->v> ou on m 
do do do do do on 


NO O WNN OVM COt}-u-iO ^}-00 ClNO OS 
OO rj- OnOO t-~ t^.NO wN-^-ONCor-^cJNO O 
N T |^ N O m couir^ONN + N OS H 

on os bs bs bs b b b b w m i- m V* 












(>Oft+iflMOH+OSOfl "d-vo OO 
ONO OO ON O w C4 CO VINO t^OO Q\H H CO ^j- U-| 
CnOnOnOnOOOOOOOOOhimhi- <-i 

3 . m r r* r 1 f r* f f f r* r* r* r* r* r* r" y* 


l-l CO 1000 
t^OO ON 

w -. w c* 

H rl H 


O to lOOO W CONO 00 f* U-100 
N CO tJ- IO t^.00 ON O H ri r}- 

t) tl O (I fl MMMM 

Nc4c4clNMc<NN^H 




o r--oo o O N c* >* w-i r^.oo on m ei co ion soso t) 
m r\ on n +^o oo o o -^-nooo O ii ^ M> m co iaoo O 
io uo u-ino vo vo vo t-^ t^. t~- r> r-^oo oooooooo ononOnonO 

OnOnonOnOnonONONOnOnOvonononONOnOnOnOnOnO t~~ 

o o b b b b b b boob b b b b b b b b b b 


3-vO t-. Os w CO 

N ^}-NO OO 11 CO 
O O O O HI 

t^. t-^ t^ t^ t^ t-^ 

b b b b b b 


u-i r-N Os hi co 
w-i t^ os co tj- 
m m m H 
t-~ t^. t^ t-^ r^ 
b b b b b 


CO N N M M o 
VN VO >-0 u-i W-N ly-| lO 


os osoo 00 t^ t^NO no so vn u-i 

.^ ^ ^ Ti- -^ Ti- ^" -^ ^ ^ Ti- 


+ +tOMt)r)tlHHOO 

.* ."* ."* ."* r 4 * .^** ."* .* :* ."* ."* 


OS OS OSOO 
CO CO CO to 




O t^oo O O m fi h <j-vi f^oo On w d co WIND r~- On O r -<i-NO f^ On hi woNO\h co 
to t>- ON <S ^}"0 OO O M ^-sp OO O COvot^ONw co u-iOO O C* ^NO 00 w CO vo t-~ On CO *$ 

u-i u-i uimd no vo so "r^ r^ t^ r^. r^do 00 do do do on on on on b b b b b "- 1 l_l M n f* 
ononononono*ovononononovononovo^onovonono t^.t^.t^r>.r^t^.t~.t^r^t~.t^r^ 


t^.u-)CO>M ONt^vocoH O OO NO *3-tf O Ost^u-iCOM OOO t>.vn'4-N O On f^vO rj- co w 
CO -*j- U-i^O NOt>.00 0\0'-lclCOTj-U-i UNVO t>-0O OnO O "-" C<COtJ-u-i U-iNO J^-OO ON O 
OvONONOVONOvbOD tNNtsNNNNNt>t>t> NOO 0O00000O00000O0O0000M ON 
HH M m M M M M M M M M M M M M M l-l M * - M M M M M M l-l HI M M 




M N co CO ^ <4- 


O vn.O 1^0 10O 10O >oO <oO vriO 
vouii h m H C) wm^-ri-ioio | 

CO CO 


u->0 "SO <flO voO ntno vn 
hi hi H N coco^ti-u-ivrN 



24 



TABLE II. 



Latitudes, or Hori- 

ntal Distances for 

Difference of Levels 



Cosines 
ooooo 
ooooo 
99999 
99999 
99999 
99999 
99999 
99999 

99999 
99999 

"99999 

99999 
"99999 
99999 

99999 
99999 
99999 
"99999 
99999 
99998 



99998 
99998 
99998 
99997 
99997 

'99997 
99997 
99997 
99996 
99996 

99996 
99996 
99995 
99995 
99995 

99994 
99994 
99994 
99993 
99993 

'99993 
99992 
99992 
99992 
99991 

99991 
99991 

99990 
99990 
99989 

99989 



99988 
99987 

99987 



99986 
99985 
99985 
Sines 



1 

0-89 



Departures, or 
Difference of Levels 



De &- 



Latitudes, or Horizontal Dis- 
tances for Difference of Levels 



la 



*o O >oO mo *oO o O "OO 
o 



OOOOC5030300QON10 
OlQOOCiQQOQOQOOOQO 

OOOOOOOOOOOOO 
OOOOOOOOOOOOO 



OOOOOOOOOOOOOCO 
OOOOOOOOOOOOOOO 
00001000505000 
OOOOOOOOOOOOO 
OOGOOOOOOOQOQOOOOOCXJOOGOQO 



OOOOOOOOOOJHOOO 



000 

OOC5 



OQOOOtMHO 
C50C5000009 



999 



QCQOCG 



.. O O O O 
99090909009 
000000O000000 



oooooooooo^ticoc^ 

0000000000000 
99999 ( ?5 1 9999? 3 9 
0000000000000 

^7* ^1 tji Tp "^H TjH T^ t^H ^s^ ^ ^H ^1 ^$4 



OOOOOOOOOOOOOOO 
OOOOOOOOOOOOO 

OOOOOOOOOOOOO 

cococococococococococococo 



OOOOOt^COiO 



OOOOOOOOOOOOO 



OOOOOOOOOOOOr b- 
OOOOOOOOOOOOO 
99900900003999 

OOOOOOOOOOOOO 



00000000000000 
999. 

OOOOOOOOOOOOO 



89 ** 



Departures, or Difference of 
Levels 



TABLE II. 



26 



Departures, or 
Difference of Levels 



o d 

i 



ooooo 
00029 
ooo?8 
00087 
001 1 6 
00145 

00174 
00204 
00233 
00262 
00291 

00320 
00349 
00378 
00407 
00436 

00465 
00494 
00524 
00553 
00582 

0061 1 
00640 
00669 



00727 

00756 
00785 
00814 
00843 
00873 

00902 
00931 
00960 
00989 
01018 

01047 
01076 
01 105 
01134 
01 163 

01193 
01222 
01251 
01280 
01309 

01338 
01367 
01396 

01425 
01454 

01483 
01512 
01542 
01571 
01600 

01629 
01658 
01687 
01716 
01745 
Cosines 



0-89 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 



7>eg. 



Departures, or Difference of 
Levels 



2| 
It 



O <oO *o O "1 o u->o oo *^o 

^O >fliO^^ wwti m 11 



XOr-<C0(Mt^C0a0C0C>-*QO 
TPOMOOiMNHOOiOO'* 

ooooooohhhhhh 



OOW^tJI^OONOOOOH 

r^CNCOipCpl^GSOrHCO^lO 
OOOOOOOOrHrHrHrHrH 



OCOOfflNOO^ONCOOO 



HMt)(OCOHWt)<OQO 

OrHcqcp^tiipcpoOGiprHcrqas 

OOOOOOOOOrHrHrHrH 



QOOOOOr- 1 H H H H (M (M 
OH(NiHOONOOOOH^ 
OOOOOOOOOOrHrHrH 



1 b~ lO <M O CO "tf 



C0>0ON 
CO ** 



W l.'- W UN <*4 W ^T T I l-*J t> UN ' ' l"- 

OOONO^WfMHOQONOrH 
OOrH^CO^lOCD^NQOOO 

666666666666h 



_ CO 
tOlMQN 

OCHOqff-lCO^lOiOCONQOOO 

66g6666666666 



06 



66066666666 



OilSHiOOOINWOWOO^ 
OOOHH(M(NWOOC5^iiiO 

666666666666 6 



OOJOOSOUJiO^MiMHOO 
OtNiOOOHTHhOCOOON^ 
OOOOHHHinff)(M(MC0 

6666666666666 



f^O^GO^t^dCOi-liOO'* 
H(^T)(>ON00OHC0Ttl'Ot> 
OOOOOOHHHHHH 

6666666666666 



*o ""> Q ^O w-i o ^ o *"i O ""> O 



It 



89 



Beg, 



Latitudes, or Horizontal Dis- 
tances for Difference of Levels. 



2G 



TABLE II. 



Latitudes, or 


Eori- 


zontal Distances for 


Difference of Levels 




Cosines 




1 n' 


99985 


6o' 


I 


99984 


59 


2 


.99984 


58 




'99983 


5 l 




'99983 


56 


5 


99982 


55 


6 


99981 


54 


7 
8 


99981 


53 


99980 


52. 


9 


99980 


5i 


IO 


'99979 


5o 


ii 


99979 


49 


12, 


99978 


48 


13 
*5 


99977 
'99977 


% 


99976 


45 


16 


'99975 


44 


*7 


99975 


43 


18 


99974 


42 


T 9 


99974 


4i 


20 


"99973 


40 


21 


99972 


39 


22 


99971 


38 


2 3 


99971 


l l 


*4 


99970 


36 


*5 


99970 


35 


26 


99969 


34 


27 


99968 


33 


28 


99967 


32 


29 


99966 


3i 


30 


99966 


30 


31 


99965 


29 


3* 


99964 


28 


33 


99963 


27 


34 


99963 


26 


35 


99962 


25 


3* 


99961 


24 


37 


99960 


23 


38 


"99959 


22 


39 


99958 


21 


40 


99958 


20 


4 1 


'99957 


19 


42 


99956 


18 


43 


99955 


*z 


44 


99954 


16 


45 


99953 


15 


46 


99952 


14 


47 


99951 


13 


48 


99951 


12 


49 


99950 


II 


So 


99949 


IO 


5i 


99948 


9 


52 


99947 


8 


53 


99946 


7 


54 


99945 


6 


55 


99944 


5 


56 


99943 


4 


57 


99942 


3 


*8 


99941 


2 


59 


99940 


1 


60 


99939 


0*88 


1 Sines 




Departures, or 


Difference of Levels 



Latitudes, or Horizontal Dis- 
es ' tances for Difference of Levels 



>oO **> O ^0 "> O o O *o O 



GOOOt^t^t^t^COCO )L OiO-^-^00 

6666666606666 
OOO05OOOOOOOOO 



O ** r lOOOODOOOC^GO^OiO 
OOGOOOt^t^t^OOOiOiOiO^ 



OOOOOOQONNNNCDOiOiOiO 

OOOOOOOOOOOOG5 
6606666666606 



ON>005HQiomON^HN 
GOOOOOGOOOt^t^tr-t^OOOiO 

OOOOOOOOOOOOO 

0000000000000 



HONO-^(MONlO(MaiOW 
OOOCOCOaOOOt^t^t^t^OOO 

CiOJCiOCiCSOQOOQGiQ 

666666666666 



(Mr- lOOOOlOCqr- 1 Ol O i< (M 

oooocoooooooaot^t^t^b-o 
OOOOOOOOOOOOO 

666666666666 

^ "^ TJI "^ T^ XT' '^ *^ T^ T^ **^ Tf T^i 



T)iC0(MOCiQ0iOT)(lHO00O 

OOOC5CX)OOOOOOOOQOOONN 
000000000505050103 
6006006066666 

cccocococooococococococqco 



10>0"*MCTHOONOK5N 

ooooooococooooooooo 
0000000000000 

6666060666066 



NOOiQiO^CO(M(MHOOQO 

oooooooooooooco 

0000000000000 

6666666666666 



OOOOOOOONNNOOOiOT)<^ 

0000000000000 
00000000000005 

6666666666666 



8H 



88 



_ Departures, or Difference of 

Des ' Levels 



TABLE II. 



27 



Departures, or 
Difference of Levels 



Sines 
01745 
01774 
01803 

*Ol8j2 

01862 

01 891 
01919 

01949 

01978 

02007 
02036 

02065 
02094 

02123 

02152 

02181 

0221 1 
02240 
02269 
'O2298 
O2327 

02356 
02385 
02414 
02443 
O2472 

02501 
02530 
02559 
02589 
026l8 

O2647 
02676 
02705 
O2734 
C2763 

02792 
02821 
O2850 
O2879 
02908 

02937 
02967 
O2996 
03025 
O3054 

O3083 
03I 12 
03 141 
O317O 
O3I99 

03228 
03257 
O3286 
O3315 
03345 

3374 
03403 
03432 
03461 
03490 
Cosines 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 



1_ Departures, or Difference of 

Des ' ^ Levels 



K5 1 ICO. ll>.<NaOCOCO'*t<G5'<# 
t^qpOrHCp^cpt^opTT-icp^ 
rHrHC3<^Cq<jq<J3<NCNcbo3cb<> 



H(M(MCO^lOONOOOQOH 

NOMOCSIMIOOOH^NH^ 

iOt-cpOjpcqcp-^cpt>.qpprH 



OCOCilOHQOTfONiWOlOfN 

oooob-Gpcip^cp^ipcpt^ 

rHrHrHrHrHrH(fl<Jq<fq(fq<N<fl(fq 



ft 



(^^lONOOtM^OQOOHM 

qqcp^ippi^cpppr^^cp-^ 

rHrHrHrHiHrHrHrHC^fN^i^cfq 



<*C5(MOOOpNiO^COHOCJ 

OHqqMM^ipoNopopo 

rHrHrHi^rHrHrHrHr^rHrHCNCN 



GOpPPrHCqCOCp^lppcpt^ 
OOrHrHrHrHrHrHrHrHpHrHrH 



C0Ot)<(MHN1OM(MO00O 
OiOHNMOO^OOCMOOWOi 
pt>.OpcpOipprHrH(?C|(yiCOC0 
OOOOOOHHHHHriH 



lOiaOOCONNQOOOOOOO 
6666666666OHH 



^NOWCOOWiOQOH^OO) 

6666666666666 



^ci^oocot^cqcOT-noo-^o 

NOOOHCO^ONfflONM^ 
1 lrH(M(N(MCq(N(NC^COCOCOCO 

6666666666666 



15 



88 



Latitudes, or Horizontal Dis- 
es " tances for Difference of Levels 

__ 



28 








TABLE II. 






Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 


m 
J 
p 

> 

P 




P 
p 

P 

tf 

O 

m 
W 


1 

to 

1 1 
P 

P 

1 

O 
to 

H 
g 

g 

P3 

c 

H 

P 
E 

H 

) ( 
H 

P 


(\ Latitudes, or Horizontal Dis- 
<v es " tances for Difference of Levels 


2 o' 
2 

3 
4 

5 
6 
7 
8 

9 

io 

ii 

12 

13 
14 
15 
16 

17 
18 
19 

20 

21 
22 
23 

24 
25 
26 

27 

28 

29 

30 

3i 

32 

33 
34 
35 
36 

37 
38 
39 

40 

4* 
42 
43 
44 
45 
46 

. 47 
48 

49 
50 

5i 

52 
53 
54 
55 

56 

57 
58 

60 


Cosines 
99939 
99938 
99937 
99936 
99935 
'99934 

'99933 
99932 
99931 
99930 
99928 

99927 
99926 
99925 
99924 
99923 
99922 
99921 
99920 
99918 
99917 

99916 
99915 
99913 
99912 
9991 1 

99910 
99909 
99907 
99906 
99905 

99903 
99902 
99901 
99900 
99898 

99897 
99896 
99894 
99893 
99892 

99890 
99889 
99888 
99886 
99885 

99883 
99882 
99881 
99879 
99878 

99876 
99875 
99873 
99872 
99870 

99869 

99866 
99864 
99863 


60' 
59 
58 

? 

55 

54 
53 
52 
5i 

5o 

49 
48 

46 
45 

44 
43 
42 
4i 
40 

39 
38 

36 
35 

34 
33 
32 
3i 

30 

29 
28 

26 
25 

24 
23 
22 
21 
20 

l 9 

18 

\l 

15 

13 
12 
11 
10 

9 

8 

I 

5 

4 
3 

2 

0-87 




O 10O <oO n-> O vr>0 oO 10O 
O 
00 


-O 03 

is 


m 

P 

1 

p 

Q 
I 

B 

p 



1 

p 

H 

P 

9 

p 

p 






qj^oocoi>-T-iiooocqooooco 

W05(?q(NHHOOO00t>NO 
OOSOSOJGSCiOQOQOaOOpGOGO 





M 




ON 


IOHIOp- (VOO^OOCOCDi I CO CD 
^Tj(nW(M(MHOOOOOON 

OOOOQOOOGOQOOOQOOOOOQOOOOO 


O 

ON 




00 


!-Ht^<MOO^CS-*GO-<*aO<MCDO 

OiOJOOSOiCiOioqiOOcpqp 


O 

00 





iOIOIO^-^OOCO^IMHHOO 







NO 


e0ON^ONC0Q0iOHN(M00 




NO 





QN"^HGO>OCTOWO>OH 

ooooq66 6c6 

"^ "^ "^ *^ T^l "^H t}H t^ tJ4 "^ ^H Tt^ '^ 





3. 


ococococooococqcococococo 


% 




CO 


(MOQONOCCHCiNiOCOHO 
OOCONNNNNOCDOCOOlO 




CO 





ooNioeoCTHOQON-^o: 

CCaOOOCOOOCOOOaOt^t^t^t^l^ 








t)(M00(M(MHOOO0000NCD 

OOOOffiOOffiOOQOCOOOOO 


O 


l"fil 

II 


O *o n O *n O oO ^ O oo 

M HI C* M tfl W ij- <^ IO J")NO 












Departures, or 
Difference of Levels 


8 


4 De &" Levels 


ace c 


ji 











TABLE II. 




29 


Departures, or 
Difference of Levels 


OQ 

1 
9 

O 

m 



S 

M 

gj 

p 

tf 



aT 

8 
P 

H 

I 

H 

P 


Deir Departures, or Difference of 
<w "' Levels 


2 o' 

2 

3 

4 
5 
6 

7 
8 

9 
io 

II 

12 
*3 

14 
*5 
16 

17 
18 

19 

20 

21 

22 

*3 
24 

2 5 

26 

*7 

28 
29 
30 

31 

32 

33 
34 
35 
36 
37 
38 
39 
40 

4i 

42 

43 
44 
45 
46 
47 
48 
49 
5 

5i 
54 
53 
54 
55 
56 
57 
58 

60 


Sines 
03490 
03519 
03548 

03577 
03606 
03635 

03664 
03693 
03722 
03751 
03781 
03810 
03839 
03868 
03897 
03926 

03955 
03984 
04013 
04042 
04071 

04100 
04129 
04158 
04187 
04216 

04246 
04275 
04304 
04333 
04362 

04391 

04420 

04449 
04478 
04507 
04536 
04565 

04594 
04623 
04652 

04682 
0471 1 
04740 
04769 
04798 

04827 
04856 
04885 
04914 
04943 

04972 
05001 
05030 
05059 
05088 

05117 
05146 

05175 
05204 
05234 
C sines 


60' 
59 
58 

56 
55 

54 
53 
5* 
5i 
50 

49 
48 

46 
45 

44 
43 
42 
4i 

40 

39 
38 

36 
35 

34 
33 
3a 
31 

30 

29 
28 

26 
*5 

24 
*J 

22 
21 
20 

19 
18 

\l 

15 

14 
13 
12 
11 

10 

9 
8 

I 

5 

4 
3 
2 
1 

0-87 




*o *o o oO 10O oo >oo 

00 


If 


w 



O 

Q 
3 

1 



i 1 

P 


gg 

Q 

P 

O 

S3 

t ( 

O 

w 


go" 
P 

B 

H 
t 1 
H 

3 






OihOhN(MSH0005(tD 
MOOlNNHOOOQrHQOM 

CO CO CO CO *^ "^ "^ "^ "^ "^ "^ lO 10 


O 
O 



on 


HHiMMT)<lOOCDCDQOCi050 
^NOCOOOCTiOQOH^SH 

1 icq-^iQcot-^oOi ico^^t*- 
Mcbcbcbcbcbcb^^^-^^^ 


O 
ON 



00 


(MQO^HS^OCOHQO^ON 
ON^ONOO(MMIONOO 
t^05prHOqcp^t<Cpt>00020i 1 

cq(^cbcbcbcbcbcbcbcbcb-^Tt< 




00 





co^cDcpo^coiob-oocqco 
^lpcpb-opqsorHC^cp^ipo 
<?qCTcq<^cq<^cbcbcbcbcbcbcb 








TPHOQlOOOONrffHOiCDCOO 
05Q03or)(05HOONO0^ 
OHNW^ipOb-NQpaOH 

CN<f^c^<^<N<?^oqc^oqcqffqcbcb 








lOSOCOCDOOHMOQH-^N 
t(IHOOOQOOiMOM>^H 
t^OpOOOiOrHrHCMCpcp^tlipCp 





% 


Ot|((NOOONOMHC5S0 05 
lOHNCTOO-^OOHNMOJ 
COTHiOipOONCOQpOOOp 
i^rHrHrHrHrHrHrHrHrHrHCqcfq 







en 


NO^QOHiOQONOOMOO 
^QCOIXMOOiOOMQOINN 
PprHrHCqC^CpcpCp-rJH^ipjp 
rHrHrHrHrHpHrHrHrHrHrHrHrH 




eo 


O 


OONOlO^MCTHOOOQON 
ONNNQOOOQOOOOOOO 
6666666666OHH 


O 
el 


O 


OiCOGOCOt^CTCOi-H^OO^OSCp 

^ONOOtMCOiQCOOOOCl 

cocococp^^-^^r^^^oip 
OOOOOOOOOOOOO 


O 


If 


"0 100 voO o O *i-iO ^o >00 
w 11 el el ww + '+'o *ovo 
O 




Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 


qw Latitudes, or Horizon 
O De *' tances for Difference 


tal Dis- 
: Levels 



30 



TABLE II. 



Latitudes, or Hori- 


zontal Distances for 


Difference of Levels 




Cosines 




3 o' 


99863 


60' 


i 


9986! 


59 


2 


99860 


58 


3 


99858 


H 


4 


99857 


56 


5 


99855 


55 


6 


99854 


54 


7 


99852 


53 


8 


99850 


52 


9 


99849 


5i 


io 


99847 


50 


II 


99846 


49 


12 


99844 


48 


*3 


99842 


47 


H 


99841 


46 


*5 


99839 


45 


16 


99837 


44 


7 


99836 


43 


18 


99834 


42 


19 


99832 


4i 


20 


99831 


40 ' 


21 


99829 


39 


22 


99827 


38 


23 


99826 


37 


24 


99824 


36 


25 


99822 


35 


26 


99820 


34 


27 


99819 


33 


28 


99817 


32 


29 


99815 


3* 


30 


99813 


3 


3i 


"99812 


29 


3a 


99810 


28 


33 


99808 


27 


34 


99806 


26 


35 


99804 


25 


36 


99803 


24 


37 


99801 


23 


38 


'99799 


22 


39 


99797 


21 


40 


99795 


20 


4i 


'99793 


19 


42 


'99792 


18 


43 


99790 


l l 


44 


99788 


16 


45 


99786 


15 


46 


99784 


14 


47 


99782 


13 


4 


99780 


12 


49 


99778 


11 


5o 


99776 


10 


5i 


"99774 


9 


52 


99772 


8 


53 


99770 


7 


54 


99768 


6 


55 


99766 


5 


56 


99764 


4 


57 


99762 


3 


5 


99760 


2 


59 


99758 


1 


60 


99756 
Sines 


o-86 


Departures, or 


Difference of Levels 



o 
o 

a 
S 

& 
P 

P4 

o 

Ph 

og 

o 

H 
OQ 



8 



Latitudes, or Horizontal Dis- 
es ' tances for Difference of Levels 



O >oO *o O oO >oO mo *<"> O 
vo >o io + ^ m m e* w m 

o 



CO*O^COM(^iHOOia)NCD0 
cpqpGpqOGpcpqDGCl^b-t-r^-l^ 

OOOOOOOOOOOOO 



COCSCTlOOOOtM^lONOOOO 
NOOTj(Tt(o:^HOOQOQO 
cpqpaDqDqpqpqpcpqpqpr^t^t^ 

OOOOOOQOOCOOQOQOOOQOOOCOOO 



OTflQOHiOOOOCOOOHCOiO 
OOOt>-I^C>iOO-tfCO<M<MT lO 
qccpqpqoapqpcpqDCpqpqpqpqO 

0000000000000 
i>>t>ifc>.i>.i>.l>i>.t>.t>.i>.r>.i>.i> 



OOOQ000NCO>0>Ot)(C0(M 

OcpcpccpqpGpqOGpQpQpqpGp 



OOCOGOCOOCOOOOlb-CqCDOCO 

HHOCOJOOOOONNOCiO 






HNMOlOHOfMNCOOOCOOO 

CO(N(MHHHOOOJOOOOON 

6oooc3o6o66c56 

T4I ^ji "^}i TJ1 tji ^ji ^H ^^H ^^ ^^ ^^ ^^ ^J4 



lO(MOffl(MffiO!MCO^OOCq 

tj^coo:w(M(M(mhhhoo 
9999909990999 

OOOOOOOOOOOOO 
cococococococococococococo 



ic >o >o 10 <* -+ <* -f CO CO CO CO (M 
9999999999999 

O O O 
O* O* CM 



OOOOOOOOGOOOOOCOt^t^t^t>.t^ 
OOOOOOOOOOOOO 



It 
o o 

2^ 



"o "> O >oO o O o O o O oO 

M W M tl C*! CO tJ- rj- *0 iovo 






COi lOOOCD^COi lOl^iQCOr-l 

009905039090990 
ooooooocibooooo 






86 De *- 



Departures, or Difference of 
Levels. 



TABLE II. 



31 



Departures, or 
Difference of Levels 



30 o> 

2 
3 

4 
5 
6 

7 
8 

9 

10 

11 

12 
*3 
14 
15 
16 

17 
18 

19 



Sines 
05234 
05263 
05292 
05321 
05350 
05379 

05408 
05437 
05466 
05495 
05524 

05553 
05582 
0561 1 
05640 
05669 

05698 

05727 
05756 
05785 
05814 

05843 
05872 
05902 
05931 
05960 

05989 
06018 
06047 
06076 
06105 

'?I 4 
06163 

06192 

06221 

06250 

06279 
06308 

06366 
06395 

06424 
06453 
06482 
065 1 1 
06540 

06569 
06598 
06627 
06656 
06685 

06714 
06743 
06772 
06801 
06830 

06859 
06889 
06918 
06946 
06976 
Cosines 



o-86 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 



3 De &' 



Departures, or Difference of 
Levels 



r-; = 

2^ 



O oo 10O o O o O >oO 10O 
VO >o io + + w to c* 11 11 

o 



CONNOH 

(^wipptpprHc^ooippcpp 
ibiQiib)Oibcb666666 



ioo>ooioocd 



Oi ICqC^C0T^T^iOCDC0t>'t^00 

HTjlNOMOO(MX5Q0HTitN 
I^CpOrHCNCp^Cpt>GpprH<^ 

^^^101010x01010x0666 



T^^TtH^-^-^-^iOiboibib 



C0*Ct^00O<M0lOl>0CO.-<C0 
COCONNNNNN000000 
Cpb-qpOiOrH<?qcpTt<pCpl>.00 



ONt^HOOCOON^HQOW 
^(MHOQONCDIOMIMHQQO 
rH^Cp^^ipspt^GOCSpOrH 



l>C5(?q^t^OCMlOOOOCOXOOO 

hoocomoqo0(Non^hqo 

Cpcp^GCpqiprHrHG<JCO"TH-^l 



o 

OS 

COONN 



O-^t---l^00i-HiO00G^OCiC0 
NHiOO^QOWNHOO^a 
ipppt^t^C^cOGpppppp 
rHrHpHrHrHrHrHfHrHrHCNCqiq 



Tjt>OWOO(MiONOMOOi 
OOHHHH(M(M(MCOCOWCO 



OOODNNHOOlOO^QOeSOO 
(MMiOOOOCiHfMWiOCDOOO 
iO00OiOiOOCOOCOCOCOCD 

6660660006606 



86 De &- 



Latitudes, or Horizontal Dis- 
tances for Difference of Levels 



TABLE II. 



Latitudes, or Hori- 


zontal Distances for 


Difference of Levels 




Cosines 




4 o' 


99756 


60' 


i 


99754 


59 


2 


99752 


58 


3 


99750 


s l 


4 


99748 


56 


5 


99746 


55 


6 


'99744 


54 


7 


99742 


53 


8 


99740 


52 


9 


99738 


5i 


IO 


99736 


50 


ii 


"99734 


49 


12 


99731 


48 


J 


99729 


4 ? 


H 


99727 


46 


15 


99725 


45 


16 


99723 


44 


17 


99721 


43 


18 


99718 


42 


'9 


99716 


4i 


20 


99714 


40 


21 


99712 


39 


22 


99710 


38 


23 


99707 


H 


24 


99705 


36 


25 


99703 


35 


26 


99701 


34 


27 


99698 


33 


28 


99696 


32 


29 


99694 


31 


30 


99692 


30 


31 


99689 


29 


32 


99687 


28 


33 


99685 


27 


34 


99682 


26 


35 


99680 


25 


36 


99678 


24 


37 


99675 


23 


38 


99673 


22 


39 


99671 


21 


40 


99668 


20 


4i 


99666 


19 


42 


99664 


18 


43 


99661 


17 


44 


99659 


16 


45 


9.9656 


15 


46 


99654 


14 


47 


99652 


13 


48 


99649 


12 


49 


99647 


11 


50 


99644 


10 


5i 


99642 


9 


52 


99639 


8 


53 


99637 


7 


54 


99634 


6 


55 


99632 


5 


56 


99629 


4 


57 


99627 


3 


5 


99624 


2 


59 


99622 


1 


60 


99619 

Sines 


0*85 


Departures, or 


Differ 


euoc of I 


..evels 



4 Degr. 



Latitudes, or Horizontal Dis- 
tances for Difference of Levels 



>o tji co (M h o G 00 O 10 -r c: h 
- 1>.CDOOOCO 

7s a a a 



0ffi050iOC50 
OOOQOOQOO 



OHfMjqMWWtMHOOOiN 
CONOiO^(NHOCiOOiO 
b~b~t^b~t^t~t^t^j^CDOO 

aOGOaoaoaoaoaoooooaoooooao 



OQXOONCHO^CC^HOO 
CiCiCiCiCiCiCiCidiCiCiCiCi 



ffl(NiONO(M'r|iOQOOH(MCO 
Cq<MHOOOOONOiOiO^M 

cpGpqpGpGpb-^b-t>t-.i^t^b, 

OCDOOOCOOCOOCO 



COOO^lOOOCqiOOOrH^CCO^H 
iOt)(-*COCTCTHOOOOONN 
opcpopopapcpapqpqpb~t^t^l>. 



00 CO 00 <N b- 

opcpcpopopqoopopqcopopqpop 

^1 TJ^ "^1 "^i TJ1 ^1 **^ '^1 "^1 TJ1 "^1 ^^ ^^ 



<MOO-*OiOrHt-Cqt^CqOQCOOO 

caciCiaoaot^t^cDcoioiOT* 
OscpqpcpqpopqpqpqpcpqpcpGp 

cococococococococococococo 



N-^ON^HQOilONCOOO 
(MCTWHHHOOOQO500 
ClOSCiCiOiCiCiCiOopcpopop 



IHOJNlOeOHODO^r-'OOTtf 

10 3 ^ 3 3 ^) <F5 CO CO 00 W <N cq 

|6oOCiOOOOOOOffiC3 



a a 



^ CO Ol 

,000 

0005C5Ci01CiCiC5CiCiO 

6qq666 6q66qc;q 



O er _ Departures, or Difference of 

OO De *' 'Levels 



TABLE II. 



33 



Departures, or 
Difference of Levels 



i 

2 

3 

4 
5 
6 

7 



Sines 
06976 

07005 
07034 
07063 
07092 
07121 

07150 
07179 
07208 

07266 

07295 
07324 

073 S3 
07382 
0741 1 

07440 
07469 
07498 
07527 
07556 

07585 
07614 
07643 
07672 
07701 

07730 
07759 
07788 
07817 
07846 

07875 
07904 
07933 
07962 
07991 

08020 
08049 
08078 
08107 
08136 

08165 
08194 
08223 
08252 
08281 

08310 
08339 
08368 

08397 
08426 

08455 
08484 
08513 
08542 
08571 
'08600 
08629 



08716 
Cosines 



4 
3 
2 
1 
0-85 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 



Dep. 



Departures, or Difference of 
Levels 



O "iO inO >oO ""> O >o O w-io 
vo >o vo ^ ^ w w tf m M 



OOOHOHOHCDHOHCD 
N^OHIOO^OCCOOJINH 

<t>t>t>t>t^t>t>a><x><XiaDob 



QOOOOOOHH(M(MCOa3^^ 
WiiiOOQOOOHCO'tiONCIO 



OOOOONNNNNNN 



lOOOOOOHNWipONCOO 



CO^OQOOH(M^>ONOOOH 
OOQOCOOOOOOOOOOiOOO 

^^ib*b*bobib*abiboo 



iO(MONMHNOHOiOMO 
rHC^O^-rtiipcpi^t^GppprHO^ 



oooMioooonioaoowiooo 

TjHOONNOOCiOOTHNWc: 



oooo^^oooo^moooo 

O^OONOOWQiOHNtMQO 

r^CppCSpprHrH(>lCpO?'*-rJ( 



cqcqcMcq^cMcqcM^cjqcqcqc^ 



O (M iO 00 H * O O ^1 O CO h t}( 
CO * "* T 'O O O O S O N N 



Q0(MOHOOOQ^00C0N^ 
O rH (M -) 10 1^ X C5 ^ (N ^ >0 N 

0000000000000 



If 



0*00^0 



N co w + ^>o *ovo 



q t Latitudes, or Horizontal Dis- 

OO Deir ' tances for Difference of Levels 

i~3 



34 








TABLE II. 






Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 


W 

I 

O 


8 

P 
g 

m 



< 

Eh 

O 
N 
1 i 

O 

l-H 

H- ( 

O 

of 

p 

H 
1 ( 
H 


K Latitudes, or Horizontal Dis- 
O *' tances for Difference of Levels 


5 o' 

2 

3 
4 
5 
6 

7 
8 

9 

IO 

ii 

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 

4i 

42 
43 
44 
45 
46 
47 
48 
49 
50 

5i 

52 
53 
54 
55 
56 
57 
58 

I 9 
60 


Cosines 
99619 
99617 
99614 
99612 
99609 
99607 

99604 
.99601 

99599 
99596 

99594 
99591 
99588 
99586 
99583 
99580 

99578 
99575 
99572 
99570 
99567 

99564 
99562 

"99559 
99556 
99553 

99551 
99548 
"99545 
99542 
99540 

'99537 
99534 
99531 
99528 
99525 

99523 
99520 
99517 
99514 
995 1 1 

99508 
99505 
99503 
99500 
'99497 

99494 
99491 
99488 
99485 
99482 

99479 
99476 
99473 

99470 
99467 

99464 
99461 
'99458 
99455 
99452 

Sines 


60' 
59 
58 

U 

55 

54 
53 
52 
5i 

50 

49 
48 

46 
45 

44 
43 
42 
4i 

40 

39 

38 

11 

35 

34 
33 

32 
3i 
3 

29 
28 

3 

25 

24 
23 
22 
21 

20 

19 
18 

\l 

15 

14 
13 
12 
11 
10 

9 

8 

I 

5 

4 
3 
2 
1 
0-84 




"0 <oO <O0 woo o O >oO >oo 

VD l^lO^-^-MMrt H HI HI 

+ 

00 


"8 M 
!5 


w 

Ph 
O 

H 


&5 

S 

1 

P 



O 

P 






0*00000000000 









<3\ 


Ni0(MOO10(MONt)ION 
C * CO !M h O 00 N O t)i W (M O 

cp:pocpcpcpipipipipipipip 

0066666606666 
aoaoooaoxccGOQOGOoGacaoao 







O 

00 


OLOuO'fTtiiMHOOODO^H 
OODNOiO-*(MCOXNO 

6666666666666 
t>- t> t> 1^ i> t^ - i>- b- b- b- 1>. t^ 



00 


O 


OTOCCNNNNODOONNS 

(MHCOCONOiOi'KWH 

060OOO0666666 
CCOOOOOOOOCwO 





O 


H'toaowcoiocopooH 

NCiC^^^^HOOOOXN 

6666666666666 





O 


oNonoO(MjacHno 

OCOOKNCCO'f'+COlM 
X X^b-b-.b-b-b-b-b-t^t^t^ 

6066666666666 

Tji ^1 "^t -rgi ^ji ^j^ t^ ^^ ^^ ^^ -^^ ^^ -v-j^ 


O 
10 


5- 


XJlOCfMNHOO'fOWNH 

*t^K(N(MHHOOO00 0C 

ccccccac>occccccooD~t>.t^t>- 

6 6 6 6 6 6 6 6 6 6 6 6 6 
ctcocooocococococococococo 


5- 


O 


CMX-*00(MS0001000 
XODNNNOCOlOrP'f-t<CO 
X X X X X X X X x cp op X X 

6 6 6 6 6 6 6 6 6 6 6 6 6 
<m cm cm cm cm cm cm cm cm cm cm cm cm 





O 


19-924 
10021 

19919 
19-916 
19-913 
19911 
19-908 
19-905 
19-902 
19-899 
19-896 
19-893 
19-890 


O 


O 


(NHOOCNIO^IMHOOONIO 
CO CO 10 ia 10 10 10 O 10 o ^h rf H 
OOOOOOOOOOOOO 

6 666666666666 


O 




O v-> O *oO 10O u-iO o O oO 

w hi ^ pj roto5T-i-w-) iovo 
O 
10 




& 


I Departures, or Difference of 
C egr ' Levels 


Dei 
Dtffew 


art u res, 
nee of L 


or 

evels 











TABLE II. 




35 


Departures, or 
Difference of Levels 


1 

O 


P. 

M 



of 

B 

P 
H 

M 

<5 
Fh 


P 


er ^ Departures, or Difference of 
5 * Levels 


Jo' 

2 

3 
4 
5 
6 

7 
8 

9 

10 

ii 

12 
IJ 

14 

IS 

16 

*7 
IS 

19 

20 

21 

22 

23 

24 

*5 
26 

27 
28 
29 

30 

3i 
31 
33 
34 
35 
36 
37 
38 
39 
40 

4i 

42 
43 
44 
45 
46 
47 
48 
49 
5o 

Si 
Si 
53 
54 
55 

56 
57 
58 

60 


Sines 
08716 
08744 
08773 
08802 
08831 
08860 

08889 
08918 
08947 
08976 
09005 

09034 
09063 
09092 
09121 
09150 

09179 
09208 

' 92 1I 
09266 

09295 

09324 
09353 
09382 
0941 1 
09440 

09467 
09498 
09527 
09556 
09585 

09613 
09642 
0967 1 
09700 
09729 

09758 
09787 
09816 
09845 
09874 

09903 
09932 
09961 
09990 
10019 

10048 
10077 
10106 
10135 
10164 

10192 
10221 
10250 
10279 
10308 

10337 
10366 
10395 

10424 
10453 
Cosines 


6o' 
59 
58 

s 

55 

54 
53 
5* 
51 

50 

49 
48 

46 
45 

44 
43 

42 

4i 
40 

39 
38 

11 

35 

34 
33 

32 

3 

30 

29 
28 

11 

25 
24 
23 
22 
21 
20 

11 

\l 

IS 

14 
13 
12 
11 

10 

9 
8 

I 

5 

4 
3 

2 
1 
0-84 




O o 100 w->o oO >oO oO 

VO V) V) ^ ^" M W H t M HI 

00 


If 
il 





1 

p 




to 

a 
r 

& 

p 


g 

no 

w 

Q 
H 

p 

Eh 




B 

g 



p 
p 

H 

M 

P 





M 


CDOiOOvOOiOO-^OiCOOOCO 

HOOi0O-tG0(NNHOO>0 

d)(X)6666666666 

r-H 1 1 r 1 1 1 


O 

o> 


T)ir)ilOiOiOO'OONNNNOO 
^NOMOONiOQOH^NO 
CGirH(^JCp^tCpb-OpprH(jq^ 




ON 


O 


WOO^OO(MOOOOiOHO^ 
NQOONCOlOOOOQHCOTttCO 
Pp(^C0^ipCpb-0pprH(7qCp 




00 


O 


H^tHiOOOOOOCTMt)(ON 

OOOOOOOt IHHHHr- 1 
HCNW^tpCpNCpOpHOTep 

cobcbcbcbcbQbocbt~t^-t>'t> 





O 
VO 


a>ocoot^-<*rHoo^-HT-tooiorrq 

(MHOONOiOntNHOOON 
(N OO f f C CO N CC O O O H CT 

lbibibibicibioibiboooo 




VO 


O 


00 00 10 t- <m *a b- a oi * 

OKON^^OOMOCOOiM 
CpT^OiOONNOOOOOHfN 








OD'tOOHNmOiOOOCTOO 
-^OOONNODCpOOpHH 

oowwobocboocbcbrt<Tj<Ttt^ 


9- 




to 


10 co w 10 co w 01 w 

HiOO^COMNHCDOiOW 
OCONNNCpcCOOOOOH 




CO 


O 


MOHOOCONOOtPM(MO 
rfNOWlOOOH'tNOMOO 
SNOOQOCCOOOqjQOOOO 





O 


(MOOOOiCOOONCTOHiO 

nooohct4ionqoohm^ 
GOOOCiOppppppppp 
OOOOOOOOOi IrHr-lrH 





% 2 1 
W?\ O voO *oO "OO o O *f> O ^ O 

1 8 1 




Lati 
zont 
Diffe 


budes, or 
il Distan 
rence of 


Hori- 
3esfor 
Levels 


y| Latitudes, or Horizon 
C$41: De8r ' tances for Difference 


tal Dis- 
f Levels 



36 








TABLE II. 






Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 


m 
> 



O 

3 

I 

ti 
P 

g 
m 
O 

H 
m 
1 1 
P 

a 

E 



I 

i 

O 

H 

Q 
P 

H 

M 

H 
<! 
h3 


r% Latitudes, or Horizontal Dis- 
O ee * tances for Difference of Levels 


6o' 
i 

2 

3 

4 
5 
6 

7 
8 

9 

IO 

ii 

12 

n 

4 

15 
16 

\l 

18 

19 

20 

21 

22 
13 
24 
25 
26 
27 
28 
29 
30 

31 

3* 

33 

34 
35 

36 
37 
38 
39 

40 

4i 
42 
43 
44 
45 
46 

47 
48 

49 

50 

5i 

52 
53 
54 
55 
56 
57 
58 

60 


Cosines 

99452 

99449 
99446 

99443 
99440 
99437 

99434 
99431 
99428 
99424 
99421 

99418 
99415 
99412 
99409 
99406 

99402 
99399 
99396 
99393 
99390 

99386 
99383 
99380 
99377 
99373 
99370 
99367 
99364 
99360 
99357 

99354 
'9935' 
'99347 
99344 
99341 

99337 
99334 
99331 
99327 
99324 

99320 

99317 
99314 
99310 
99307 

99303 

99300 
99297 
99293 
99290 

99286 
99283 
99279 
99276 
99272 

99269 
99265 
99262 
99258 
99253 


6d 
59 
58 

56 
55 

54 
53 
5^ 
5i 

50 

49 
48 

46 
45 

44 
43 
42 
4i 

40 

39 
38 

11 

35 

34 
33 

31 
3i 
30 

29 

28 

26 
25 
24 
23 
22 
21 
20 

l 9 
18 

\l 

15 

14 
13 
12 
11 
10 

9 

8 

I 

S 

4 

3 
2 
1 
0-83 




O oO ^ O voo o O o O oO 

"OlO^^MMH tt H M 

CO 

00 


u 

if 


m 

P 

> 

O 


55 





P 

ti 



of 

P 

H 

< 
Ph 
H 

P 






(NNHOOCONH-^NOCTIO 
lOWJlOCJNiOTlKNOON'O 










OCJNOiOKtNOONO^IM 
aOQOOOOOOOGOOOOOOOQOOOOOOO 




ON 



00 


HONO(MQ0OWiO(M00^ 

OiOKiMpHCiaJNiO^WHO 


O 

00 





OOiO^OOH003NiO000 

o 10 10 10 10 10 o rf< -t 


O 




SO 


n o ^ j: im h a X- n c 1? 


O 

VO 





000050000(MMiOON 
(M h H O O CO N N O O ^ CC (M 
NNNNOOOOOO999 

^i 'TJi ^H *^i ^i '^i "^ji "^i "^H "^^ ^^ "^4 T^ 


O 





HO00(NOOWOOWOO(N 

ooNOoo^^ooKtMHoo 
oocococococococooococococo 


5- 




CO 


C0MN(NHHOOO0300XiN 
qpcpqpapqpopcpqpt>b~t^b-t>. 

C5 O C' O 6 6 ' Q 35 ffi O O O 


O 

CO 





ii 

etc 

u 


ON^HOO-^HQOlOHOO^H 
OXXXNNNOCOOiOiO 
qoqpqcX'Xqpqpqpqoqpqpooao 

Och>cbC5CiCiOOClGiCichiO 









*0 w-)0 >flO w-iO *o O ^ O *o O 
hi m N N CO CO j- rfr- "") vovo 


^0 






De 

Diffi'j 


partures, or 
-ence of Levels 


Si 


y _ jjepartures, or uinere 
3 Deff - * Levels 


nee 


01 



TABLE II. 



M 



Departures, or 


Difference of Levels 




Sines 




6 d 


io453 


M 


i 


10482 


59 


2 


10511 


58 


3 


10540 


57 


4 


10568 


56 


5 


10597 


55 


6 


10626 


54 


7 


10655 


53 


8 


10684 


S* 


9 


10713 


5i 


IO 


10742 


50 


ii 


10771 


49 


12 


10800 


48 


13 


10829 


H 


14 


10858 


46 


15 


10887 


45 


16 


10916 


44 


7 


10944 


43 


18 


10973 


42 


19 


11002 


41 


20 


11031 


40 


21 


11060 


39 


22 


1 1089 


38 


23 


11118 


3 Z 


H 


1 "47 


36 


*S 


11176 


35 


26 


1 1205 


34 


*7 


11234 


33 


28 


1 1262 


32 


29 


11291 


31 


3o 


11320 


30 


3i 


'"349 


29 


32 


11378 


28 


33 


11407 


27 


34 


11436 


26 


35 


1 1465 


25 


36 


'"494 


24 


37 


11523 


23 


38 


"551 


22 


39 


11580 


21 


40 


1 1609 


20 


4i 


11638 


19 


42 


1 1667 


18 


43 


11696 


l l 


44 


"7*4 


16 


45 


'"754 


15 


46 


11783 


14 


47 


11811 


13 


48 
49 


1 1840 
1 1869 


12 
11 


5o 


1 1898 


10 


?l 


I 1927 


9 


5* 


11956 


8 


53 


1 1985 


7 


54 


12014 


6 


55 


12043 


5 


56 


12071 


4 


57 


12100 


3 


58 


12129 


2 


5 9 


12158 


1 


60 


12187 
Cosines 


0*83 


Latitudes, or Hori- 


zontal Distances for 


Difference of Levels 



6 <>*. 



Departures, or Difference of 
Levels 



"o "->0 'oO iflO voO ^ O >oO 
no >o>o + ^m M M 



MN(MSHOOiOC5^00N 
^lONCppHMrJiONQOOH 
OOOOHHHHHHHJKN 



Goooooooooooooaoopoooooooo 

666303666666666 



ONCSOOl^iONCOOHM^ 

cp^tiipt^qpCsprHcq^ipcpt- 
doaoa)d)aooo6666666 



SQ003H5qM"i*>0CXC3OH 
H H H (N (M <M Ol ^1 (M (N (M CO 03 
COfiOONOOOJOHNCp^lO 

x^t>t>t>t>t>t>cbaododbc>bdo 



eqaoocqc3iooqC3 



Cr)OCOOOOOI>NNI> 



OOHWOWONION03HM 

(^c^cp-^ipippt^cpcpppp 
ibbooiboibbb)o*c66 



HON0(MOQ00i*HONi0 

C0C003i0HN(M00^OOHN 

Huqcqco^^ooONNoooo 



OC3WOC3C0003WOC3MO 
CO N iM CO O >0 O CO (M O h O 
rHrHC<jCqCOCpcp^^ipppp 

wcbcbcbcbcbcbwwwobwcb 



OOiOONOO^COCqHOOON 

qh^noc: s r. "m o qo o co 
OHHH(N^^wcpcpcpi , -i' 
<^(Ncfq<fq<jqcn^(?qG^o^cf^^cq 



iOO**OCOCO(MOHOO^O 
iiONQ0OHC0^ONC3Oi- 
OOOOrHr-irH. Ii IHH(N(M 



83 De *- 



Latitudes, or Horizontal Dis- 
tances for Difference of Levels 



38 



TABLE II. 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 



Cosines 
99255 
99251 
99247 
99244 
99240 
99237 

99233 
99229 
99226 
99222 
99219 

99215 
9921 1 
99208 
99204 
99200 

99197 
99193 
99189 
"99180 
99182 

99178 
99175 
99171 
99167 
99163 

99160 
99156 
99152 
99148 
99144 

99141 

99*37 
99133 
99129 
99125 
99122 
991 18 
99114 
991 10 
99106 

99102 
99098 
99094 
99090 
'99086 

99083 
99079 
99075 
99071 
99067 

99063 
99059 
99055 
99051 
99047 



99043 
99039 

58 -99035 

59 *99?i 

60 '99027 

Sines 



6d 
59 
58 

% 

55 

54 
53 
5* 
5i 

50 

49 

48 

46 

45 

44 
43 
42 

41 

40 

39 

38 

36 
35 

34 
33 
3* 
31 
3 
29 
28 

26 

25 
24 
*3 



I 

5 

4 
3 
2 
1 
0-82 



Departures, or 
Difference of Levels 



\M _j Latitudes, or Horizontal Dis- 
e ' tances for Difference of Levels 




O >oO *o O wi o O o O o O 

vo 10 >o rj- + ^ to n w w 

O 

00 


If 








lOt^OOCMCO"^iOCOCDt>.b~l>- 

lOCOHOOOCD-'iKMOOO'*^ 
WNWNHHHHHpOpO 

6666606606666 
OOOOOOOOOOOOO 










ON 


01CONO^t>0(M>ONO(M^ 

O)HC00O^C0HONO-*(N 
M(NCTN(^01NHHHHH 

0O0OCXDOOO0QO0OO0OOOOOOO0QO 



o\ 





00 


"*OiOOOOOOK5^00(M 




00 


m 
3 

> 

O 

O 
125 

W 

S 



of 

p-1 

D 
H 


P 



1^ 


OOOnON^HN^OSWO 
NOiO^^IHOQONO^WH 

66o66oQOOQ6oC3 

cdooooooooooo 






vo 




COCTHOOOOOiOt)<(MOQOO 
O^M(MOO(NOiO^(MH 

6606666666600 




VO 


N00OQHH(M(MC0MC0 

(MHOOOXNOO^COiMH 

666666666 6 6 66 

^^ "^^ *^ "'^ "*^ *^^ t^ "^^ **^ ^^ "^ ^^ *^i^ 





I- 


(MlOQOOOOiOCOON-fNOH 

OOQOQONCOiOO^MCTHH 

6666666666660 
cooocococococfocooococococo 


5- 


O 
CO 


OHOOWOWNfMOO^CO 

6600606606606 

CM CM CM CM CM CM CM CM CM CM CM CM CM 




CO 





HN^O(MO>OHNWOO 
cpopccccccpccqoGpcpa) 

6600666666606 


O 


O 


lO^fMOOOO^KMHONlOM 

(M(MW(NHHHHHOOOO 

000000000 OO OO 
6606666666660 







"o o >oo >oo u-> j->o <^o 

m m cj c4 ro to ^ ^- 10 >o\o 
O 




8S 


> Departures, or DifFere 
* es ' Levels 


nee 


af 



TABLE II. 



'3'J 



Departures, or 
Difference of Levels 



2187 
2216 
2245 
2274 
2302 
2331 

2360 
2389 
2418 
2447 
2476 

2504 
*533 
2562 
2591 
2620 

2649 
2678 
2706 

2764 

2793 
2822 
2851 
2880 
2908 

2937 
2966 
2995 
3024 
353 
3081 
3110 

3139 
3168 

3197 
3226 
3*54 
3283 
3312 
3341 
3370 
3398 
34*7 
3456 
3485 
35H 
3543 
3S7I 
3600 
3629 

3658 
3687 
3716 
3744 
3773 
3802 
3831 
3860 



3917 
Cosines 



4 
3 

2 

1 
0-82 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 



Deff. 



Departures, or Difference of 

Levels 



if 



l>.rHCDOT*OOOOr>.rHll5C5eO>- 
" 00 (M l> H 
"* O t^ G> 

cV>i c^ cm cm cm cb cb cb cb cb cb cb 



OrHrHi^rHrHrHrHCqCMCMCMCM 



05VOOOHN(NNWQOMTt( 
^OOOHfMiliONQOOHW 
t^OOpO CM CO^ippr^pOrH 

660566666666HH 



HiMCOTjtioONOOOOOH^ 
00 CO CO CO CO CO CO CO CO "<f "<# TJH "* 
tppt^GpClprHCqCp^kCCOt^ 

cbcbcbcbcbciciCiCsociCid) 



(N0ilCM00*OCM00OrHI>Tjt 

HOOONiO^KHOClNOiO 
C0M-^ipipN0p9OH(N00 

i^t^t^t>t>^t>t>cbooGbcGb 



MiOOOOW^OOOOffHOOO 
QOOH 00 ta C< C5 t^ T* r- 1 00 *o 

O rH CM CO CO x)H l IO p *> GO CO O 

6666666666066 



0(MO00O05HOOTf(!MON 
NnCfOCtMNWOiOOO 
GpOppiTHrHOlC^CpCp^iOiO 

ri<Ti<Tt(ibibuoibibibibu3ibib 



OOWOO(MOC5(MkOO(MiO 
iOO-^00(MNHiOO^a)CON 
OON^QpffiCiOpOOHH 

ot)cbcbcb6o'D6cb-^i^TtiTtHT^ 



N O O ^ o: (M o O 00 N o o CO 
M O O W iO OD -( o: CD O iM O 00 

-* rji rji o o c 0999N w 
cm cm cm cq cm cm cm cm cm cm cm cm cm 



O0pfflO'-n5O'^Q0N(M 
HC3^CNOOiMmT|ONQ 
CM CM CM CI CM CJ CO CO CO CO CO CO CO 



82 



Latitudes, or Horizontal Dis- 
es tances for Difference of Levels 



40 



TABLE II. 



Latitudes, or 


Hori- 


zontal Distances for 


Difference of Levels 


C 


Cosines 




8 d 


99027 


60' 


i 


99023 


59 


z 


99019 


58 


I 


99015 


s l 


4 


9901 1 


56 


5 


99006 


55 


6 


99002 


54 


7 


98998 


53 


8 


98994 


S* 


9 


98990 


51 


10 


98986 


50 


ii 


98982 


49 


12 


98978 


48 


*3 


98973 


47 


14 


98969 


46 


15 


98965 


45 


16 


98961 


44 


7 


98957 


43 


18 


98953 


42 


19 


98948 


4i 


20 


98944 


40 


21 


98940 


39 


22 


98936 


38 


*3 


98931 


? z 


24 


98927 


36 


*s 


98923 


35 


26 


98919 


34 


27 


98914 


33 


28 


98910 


32 


29 


98906 


3i 


30 


98902 


30 


31 


98897 


29 


32 


98893 


28 


33 


98889 


27 


34 


98884 


26 


35 


98880 


25 


36 


98876 


24 


37 


98871 


2.3 


38 


98867 


22 


39 


98862 


21 


40 


98858 


20 


4i 


98854 


19 


42 


98849 


18 


43 


98845 


17 


44 


98841 


16 


45 


98836 


15 


46 


98832 


H 


47 


98827 


13 


48 


98823 


12 


49 


98818 


11 


5 


98814 


10 


5i 


98809 


9 


5* 


98805 


8 


53 


98800 


7 


54 


98796 


6 


55 


98791 


5 


56 


98787 


4 


57 


98782 


3 


58 


98778 


2 


59 


98773 


1 


60 


98769 
Sines 


o-8i 

1 

I 


Depa 


rtures, or 


Differet 


ce of I 


..evels 



8 De e. 



Latitudes, or Horizontal Dis- 
tances for Difference of Levels 



CO 



CTOOOO^(MOCOOWHOCO 

ppqigsqsgsoGpqpcpqpb-b- 
66cbcbcc<aDcbccbcdbao 

G5C50G3GiOSC3C5ClG5G50i01 



Tji5S00OHH(M(NWC0(M(M 
(MOOOOOCOHOMOCOHO 

6666666<cc#<doao 
goooooooqooooooooooooooooo 



(MOOONiOOTWOOOOiOCOH 
(NWHHHHHHOOOOO 



^OiOHCDHOHiOO^QO 
HOCJNO-^WHOOONiOTO 

cooooooooocooo 



o^wcico^oooiacqooiOH 

HCONOO^tMHOQONO 



MC0M(M'MHOO0500NOil 
HOONOiO^(MHOOCO 



H(Mt)(O0COO(MC0t)(OO00 

hooconoolo^moiho 
o o 10 lO LO o o 10 lO 10 o 10 10 



00CTOffiMNOT)il>HT(fNH 
OOOOOOONNCOOiO^oOCO 

610666666663366 



lOHNOOOiOOCMNrooOif 
O O Ci C3 QO GO QO N N O O C O 

6666666666606 

__i _ _-j J < . , __< _-d I 



WH00Or|(iyiO00OT)(HON 

OOOOiOCJfflOOOOQOGONN 
GiGicpopcpGpGpa)opGpGpqpGp 

6666666666666 



>h 1-1 cl c* ro c"> ^ ^ <-o <j~ivO 

(9 <D O 
S^ CO 






81 



__ , Departures, or Difference of 

Deff - Levels 



TABLE II. 



41 



Departures, or 
Difference of Levels 


3 
P 

i 

n 



O 

3 

S 

m 



a? 

3 

1 

ft 


O ^ Departures, or Difference of 
O Be * * 'Levels 


8 o' 
i 
i 
3 
4 
5 
6 
7 
8 
9 

10 

ii 

12 
J 

14 
15 

16 

17 
18 

19 

20 

21 

22 

23 
24 

25 
26 
2 7 
28 
29 
30 

3i 

32 
33 
34 
35 

36 
37 
38 
39 
40 

<M 

42 
43 
44 
45 
46 

47 
48 
49 
50 

5i 
5i 
53 
54 
55 
56 
57 
58 

60 


Sines 
13917 
13946 

13975 
14004 
14032 
14061 

14090 
14"9 

14H7 
14176 

14205 

14234 
14263 
14292 
14320 
14349 
14378 
14407 
14436 
14464 
14493 
14522 
14551 
14579 
14608 
14637 
14666 
14694 
14723 
14752 
14781 
14810 
14838 
14867 
14896 
14925 

'14953 
14982 
15011 
15040 
15069 

15097 
15126 
15155 
15184 
15212 

15241 

15270 
15298 
15327 
15356 

15385 
15414 
15442 

15471 
15500 

15528 

15557 
15586 
15615 
15643 
Cosines 


60' 
59 
58 

% 

55 

54 
53 
5* 
51 
5o 

49 
48 

46 

45 

44 
43 
42 
41 

40 

39 
38 

11 

35 

34 
33 
3* 
31 
30 

29 
28 

11 

*5 

24 

*3 

22 
21 

20 

19 
18 

3 

15 

14 
13 

12 
11 

10 

9 

8 

I 

5 

4 
3 

2 
1 
o-8i 




WO WO WO WO WO WO 
NO W W + tj- to to ts N m ii 


00 


11 

8 5 


0Q 

P 

P 

1 

A 

g 

m 



Eh 

Ul 
JH 

P 

| 

O 
CS3 
H 
3 

O 

w 



m 

Q 
p 

M 

EH 

* 






NHioawNHioocqoow 

HfflO"*OCOQOOHiOO-t< 







O 


505WJ'*rHMMN(SHOOC) 
(NiOOOHiNOKCCriUN 
ipOtsOOHWfWCCpQO 




ON 


O 


^o^oiTfoiooiooiooo 

W^ONOHlM'tlONQOOH 
HNWilipNOCOOHCqrtfO 
rHrHrHrHrHrHrHrH(fqCq(fqCqOq 
1 Ii IHHHr- 1 1 IHHr- IrHi Ii 1 




09 


O 


N00030HCTC3^OONOOO 

666666666666 

t (i 1 i IHr- Ii ii It- 1 H r- ( 





O 


OSCOOOCTOOUJHS^OO 
lOMNHfflQOCO'iKMHOQO 
M^ipCONqpC59H(jqMcp 

tc(ao(X)dba)6o66666 




VO 


O 


HlONaON^OCOON 
KJCCONiiHOCieOONiOtM 
OHHtMMW^ipOCONOp 




W 





NiKNONOfMONXSNON 
CD (M 00 ^ OS iO lN(N00*tO0 

lpooNNcpooooHqqtN 




CO 





lOQOfMiOOOH^NH^NOCO 


O 


CO(MHOONOlO^HO 
QOHiiNSNOXH^NON 
NqoxcpooqiOCiOOOHrH 





O 


(MOOOOTtia)(MNHOO^ 
O(MK'+ONO(MC0i0O 
CO"^'*'^^'*'*'^lOiOiO)OiO 





3?. v o WO ^O WO ^O WO WO 
2 2r MMtfrtcoco^-^w wvo 

I 




Latit 
zonta 
Diffei 


ides, or Hori- 
Distances for 
ence of Levels 


Q1 n Latitudes, or Horizon 
Ox e8 "* tanees for Difference 


tall 
FLe 


)is- 
vels 



42 








T 


ABLE II. 






Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 





1 
1 

h- i 

P 



O 

0Q 

O 

H 
m 

hH 
P 



S3 
M 

8 





a? 
P 

S 

d 
h3 


q Latitudes, or Horizontal Dis- 
t/ ^ tances for Difference of Levels 


9 d 

z 
3 
4 
5 
6 

7 
8 

9 

IO 

ii 

12 
IJ 

H 
1 S 
16 

17 
18 

19 

20 

ZI 
22 
23 
24 
25 
26 

27 
28 
29 
30 

31 
32 

33 
34 
35 
36 

37 
38 
39 
40 

4i 
42 
43 
44 
45 
46 

47 
48 

49 
50 

5i 
52 
53 
54 
55 
56 
57 
58 

60 


Cosines 
98769 
98764 
98760 
98755 
98751 
98746 

98741 

98737 
98732 
98727 
98723 
98718 
98714 
98709 
98704 
98700 

98695 
98690 
98686 
98681 
98676 

98671 
98667 
98662 
98657 
"98652 

98648 
98643 
98638 
98633 
98629 

98624 
98619 
98614 
98609 
98604 

98600 

98595 
98590 
98585 
98580 

98575 
98570 
98565 
98560 
98556 

98551 
98546 
98541 
98536 
98531 

98526 
98521 
98516 
9851 1 
98506 

98501 
98496 
98491 
98486 
98481 
Sines 


60' 
59 
58 

% 

55 

54 
53 
5* 
5i 
50 

49 
48 

46 

45 

44 
43 

42 

4i 

40 

39 
38 

36 
35 

34 
33 

31 
31 
30 
29 
28 

26 
IS 
24 
23 
22 
21 
20 

19 
18 

3 

15 

13 
12 
11 

10 

9 
8 

I 

5 

4 
3 
2 

o-8o 




O o O o O >oO 100 00 >oO 

VO ^1 >o ^ + W !^ M M Hi M 

O 
O 
00 


II 


m 

1 

Pn 

O 

pq 



1 

p 



of 

3 
p 

H 

1 

P 






OOCOOOCTOO^OOHOH 
O^(MONO(MOC00C0O00 

aDCDooccaoaoocaoaocoaOGOao 
CiGiOidOiCiCiCiCiCiOiCiGi 





H 



on 


(MHOOOONiO^tMOOOON 
qpooqpqpopt^l^t^l^t^ocoo 
636060606060606060100606060 
00000000000000000000000000 


O 
ON 




00 


ioNoooHoqcqcoT)too>oo 
posqiqiqiCiqicpcpooooooi^. 
Oiobobcbobobobobobobobobdb 




00 


b 


OONOOMOOMOfflNitN 
C0(MOOiNO^(MO00Nk0C0 
71HHO9OOOOC1OQQ 

oioioiosoioodiooboboodb 


O 




NO 


rHOO^OCDr-ll>.CqOOC005^Ci 
CO^COGvJOOit^O^CO^IOOO 
CN^C^<^<NrHpHrHrHrHpHrHO 


O 

NO 


O 


Tticoi-iooocD-^(?qoaoocoo 
Wcpcpcpcpcpcpcp<^GN<>ic<i03 


O 


I 


Q00005OOHHH(M(N(M(M(N 
OOQCOONOiOjjCOCTHOQ 
10 "^ ""^ "^r "^ "^ "^ -r T ^ "^ "^ ^ co 

co co co co co co co co co co co co co 





O 


1 i-^t^OCOCOOOrH^r^Cid^ 

CCKMHrHOOiQOCONOiOiO'^ 




to 


O 


T(iOiOO>OOOHOHOH 
lO'^'^i'COCOlNfflHHOO 

0C50 0OiOC5 05 0501 


O 
t< 


O 


NiOiNOCOlOCOOOOOCOHQO 
opopopqpopqpopopqpopopopop 


O 


11 


w HI t* t* ci co ^- <$ v/-> vovo 


o\ 








Departures, or 
Difference of Levels 


8f 


/ De * Levels 







TABLE II. 



Departures, or 


Difference of Levels 




Sines 




9 d 


15643 


60' 


i 


15672 


59 


2 


15701 


58 


3 


15730 


5 7 


4 


15758 


56 


5 


15787 


55 


6 


15816 


54 


7 


15844 


53 


8 


15873 


52 


9 


15902 


5i 


io 


15931 


50 


ii 


15959 


49 


12 


15988 


48 


IJ 


16017 


47 


14 


16045 


46 


5 


16074 


45 


16 


16103 


44 


"7 


16132 


43 


18 


16160 


42 


19 


16189 


4i 


2 


16218 


40 


21 


16246 


39 


22 


16275 


38 


*3 


16304 


3 Z 


24 


16333 


36 


*S 


16361 


35 


26 


16390 


34 


27 


16419 


33 


28 


16447 


3a 


29 


16476 


3i 


30 


16505 


30 


31 


16533 


29 


32 


16562 


28 


33 


16591 


*7 


34 


16619 


26 


35 


16648 


25 


36 


16677 


24 


37 


16706 


*3 


3 


16734 


22 


39 


16763 


21 


40 


16792 


20 


4i 


16S20 


19 


42 


16849 


18 


41 


16878 


l % 


44 


16906 


16 


45 


16935 


15 


46 


16964 


H 


47 


16992 


13 


48 


17021 


12 


49 


17050 


11 


50 


17078 


10 


5i 


17107 


9 


52 


17136 


8 


53 


17164 


I 


54 


17J93 


6 


55 


17222 


5 


56 


17250 


4 


57 


17279 


3 


5 


17307 


2 


59 


17336 


1 


60 


17365 

Cosines 


o*8o 


Latitudes, or Hori- 


zontal Distances for 


Differ 


ence of 1 


_.eve!s j 



9 De 8T 



Departures, or Difference of 
Levels 



oO o O w>o "> O o O >oo 

>0 >0 + t)- M W N rt It II 

O 

o 



If 

%3 



^oocot-r-tcoo-rjio -. 
ibibib6666666t>-b-b~ 



0100QONOiOTt<M(MHOCiOO 

NOCOOC^LOCOH'tNOW 



iOO-^O-^O^OOCOGOCOt^ffl 
ipOt^qpOpfNCO-^ipcpt^qp 
<f^(fqci(N(?^cocb(Wcbcbcbcbo2 



OHHfNtMOOKTtt-^^iOlOiO 
OOHI^WTttipONqDCiOH 
OrHr^rHrHrHr^rHrHrHrHCqcn 



C^OOtPHNMOIOHNCOO 
QOt>lO'*COHOOONO'fOTH 
C0"^^Ot>-00CiCSprH(?C|Cp^ 

666666cj666666 



(NOOCOOQOOCTOOCOHOO 
OOCXJOOrHrTHCqCpSp^ipcpCp 



66666666666 6 6 



WOOfM'OOOH'llNOMOO 
OWb-^lCOOiOOMOOfMOO 
CONlNQCOOOOOOOHHCT 



CMlOOOHTfNOMiOQOH^N 

wwwcbcb6 6cbcb6cba36 



THOCON(MOOOOi*a)(MCO 
ONOOWCOONOOWOJ 



O o O 



too voO o O *>"> O w-> O 



80 



Latitudes, or Horizontal Di3- 
De8r * tances for Difference of Levels 



44 



TABLE II. 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 


CO 

1 





fc 

3 
g 

I 

M 


Ph 

co 
W 


H 
CO 

3 

3 

g 

O 

i 




w 


w 

Q 
p 
H 


4A Latitudes, or Horizontal Dis- 
lv eff * tances for Difference of Levels 




Cosines 
98481 
98476 
98471 
98466 
98461 
98455 
98450 
98445 
98440 
98435 
98430 

'98425 
98420 
98414 
98409 
98404 

98399 
98394 
98388 
98383 
98378 

98373 
98368 
98362 

98357 
98352 

98347 
98341 
98336 
98331 
98325 

98320 
98315 
98310 
98304 
98299 

98293 
98288 
98283 
98277 
98272 

98267 
98261 
98256 
98250 
98245 

98240 
98234 
'98229 
98223 
98218 

98212 
98207 
98201 
98196 
98190 

98185 
98179 
98174 
98168 
98163 
Sines 


60' 
59 

58 

56 
55 

54 
53 
52 
5i 

SO 

49 

48 

46 
45 

44 
43 
42 
4i 

40 

39 
38 

36 

35 

34 
33 
32 
3i 

30 

29 
28 

2 

25 
24 
23 
22 
21 
20 

19 
18 

2 

15 

14 
13 
12 
11 

10 

9 
8 

I 

5 

4 
3 

2 

079 






io d 

2 

3 

4 
S 
6 

7 
8 

9 

IO 

ii 

12 

13 

14 
IS 
16 

17 
18 

*9 

20 

21 

22 
23 

24 
*5 

26 

27 

28 

29 
30 

3i 

32 

33 

34 
3S 
36 

37 
38 
39 
40 

4i 
42 

43 
44 
45 
46 
47 
48 
49 
5o 

5i 

52 
S3 
54 
55 

56 

57 
58 

I 9 

60 




O *nO v*io ^o >oO *0 O *o 

VO vi IO ^- TJ- M tfl C< M M 

O 

Ox 


U 

11 


CO 

>1 
H 

Pn 
O 

O 

i 

B 

P^ 

M 

Q 

M 



co" 

s 

5 

l 

W 

P 






HlOO^OOWOOWVOOOOCO 
Q00WONO(MONTt<HOO 

OffiCJCJCiOOOOQOJCiOl 








ON 


nOt>"*ON(MOOOOHN 

cpcpoooip^^--*^cpcpe:> 
co6o6occ6d6occooccqo6d6ooo 
oooooooooogoooqoooqoooqooo 




ON 




00 


10^t)<C0(NHOOQ0O^iMO 
OOCOi<(NOQOOMHC5NiOCO 
t^t>l> t;-l>CpCpCpcpipiO*pip 

ccbdo<&c#doc<cc<x>aDa) 


O 

00 





NOOHMiOONOOHCOCO^ 
WHOXlOiKMOONiONH 
q50}0qpqpcpqoq0b-t't~t^l>. 

oDODaoacxiaoccaoooaofhcCGO 

ococooooooo 







VO 


QM00(NSHlO05N.r- 1^00 
OO9OOOffl0iOqjqD 
CiOOod>C5ccdoaoooooao 




VO 





OMO(NOOIMOO(MO>OH 
^^HO00NO^W<MOOQ0 
<^C<li^C^rHrHrHrHrHrHrHpp 

OOCOOOC30000C50 





* 


(M(N(M(MHHOOQOONOiO 
OOONOO'tMCTOCiOONO 

cococococococococococococo 


* 




CO 


^COOirHCOCDI>.OC<icoiOl>-Oi 

ii(N(MHOOOa)NOOT(( 

6o6ci6o6oo66 




CO 





OHHCDOiOOt)*0^qoo: 
OCJQOOONNCOOiO^^COM 

oooooooooocooco 








OOiOCOOQOK5GqOt^^CClCiCO 
cqpqoqpcpQpGpopqpGpqpGpcp 





1ft 


*b 00 o O ^o >oO o 10 O 
W M fj d M M + tJ- >o lOVO 








Ti Ti'XV 




Departures, or 
Difference of Levels 


7 


9 De *- * Levels 


jnce 


.. 



TABLE II. 



46 



Departures, or 
Difference of Levels 



ioo' 
I 

2 
3 

4 
5 
6 



Sines 
17365 

17393 

17422 
17451 
17479 
17508 

I7S37 
17565 

17594 
17623 
17651 

17680 
17708 

17766 
17794 
17823 
17852 
17880 
17909 
17937 

17966 

17995 
18023 
18052 
18080 

18109 
18138 
18166 
18195 
18224 

18252 
18281 
18309 
18338 
18366 

1839S 
18424 
18452 
18481 
18509 

18538 
18567 
18595 
18624 
18652 

18681 

18710 
18738 
18767 
'i 8795 

18823 
18852 
18881 
18909 
18938 

18967 
18995 
19024 
19052 
19081 
Cosines 



079 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 



xn 



10 Be &- 



Departures, or Difference of 
Levels 



v> o >o o 



lOOOH-tSOM^ 

C O C CJ W X' f) o o o o -. 

COiOCNQOWMtOCONC: 



Ci <n *o 00 



t^t^i^i^t^docboooboooDaoo 



(MiOOOHTj(|>owiOOOHTt*N 

Cpt^GpOrHCvl'rJHlOOt^CiOrH 



s- 



(MOHIOO^OCOOXMOOO 
OOfMOTiOONCONKiOO 
QOOHNM^iOOOOOOHCq 



lOOCDOOOONSNNNN 

10 u: o iQ o o o o o io o o 

rHC^Op'TtiipCp^QpqSprHtTqOp 



T}(ppON00CiOHH(MW 
OOOOOOOrHrHr^rHrH 



(M^ONCiOlMCOiOCOOOO 
00OC<1CSO^^-IGOIO(MC1CO-* 
Cpt^qpopqiOrHrHGqcpCp^O 



OCOOQOVO(MON^HOOON 

opprHpHcrqcNcp^^ipipcp 



(MlOOOi-H^t-OCOCOOOrH^ 

O>0OC0C0(MOHOQC000(M 



OOtNOONCOlOCOtMOOOOO 

^ipipipippcpcpt^b-b-b-qp 



5DHUJC3^00(MNHOO^QO 


CQiOONOOtNMiOONOO 


l>t^t^t^t^Q0O000000000OOC5 



11 

I! 

S3 



79 *>egr. 



Latitudes, or Horizontal Dis- 
tances for Difference of Levels 



46 








TABLE II. 






Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 


CO 

1 

> 

m 

O 

P 



O 

CO 

m 



H 
co 

M 

P 



N 

O 

P* 

O 

w 

P 
P 
H 
1 1 
H 

3 


"11 n Latitudes, or Horizontal Dis- 
JLL eff * tances for Difference of Levels 


11 o' 

i 

2 

3 

4 
5 
6 

7 
8 

9 

IO 

ii 

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 

4i 

42 
43 
44 
45 
46 
47 
48 
49 
50 

5i 

52 
53 
54 

5 

57 
58 , 
60 


Cosines 
98163 
98157 
98152 
98146 
'98140 
98135 

98129 
98124 
981 18 
981 12 
98107 

98 1 01 
98095 
98090 
98084 
98078 

98072 
98067 
98061 
98056 
98050 
98044 
98039 
98033 
98027 
98021 

98016 
98009 
98004 
97998 
97992 
97987 
97981 

'97975 
97969 
97963 

97957 
97952 
97946 
97940 
'97934 
97928 
97922 
97916 
-97910 
97904 

97899 
97893 
97887 
97881 
97875 
07869 
97863 

97857 
97851 

97845 

97839 

97833 
97827 
97821 
97815 
Sines 


60' 
59 
58 

u 

55 

54 
53 
52 
5i 
5 

49 
48 

% 

45 

44 
43 
42 
4i 
40 

39 
38 

1* 

35 

34 
33 

32 
31 
30 
29 
28 

26 
25 
24 

23 
22 
21 
20 

'9 
18 

s 

15 

14 

13 
12 
11 
10 

9 
8 

I 

5 

4 
3 

2 
1 
078 




O m O >oO oO *oO m O <oO 

vo >o >Oij- ^- CI M C* M w 


00 


1 

Sf 

a3 


1 

CO 

h3 

> 

a 

ft 





Pw 

P^ 
P^ 

M 

P 

P4 

O 

co" 

p 

H 

P3 

P 






COCOOMOtMOOCOON^H 
rHrHrHpppCiCiCiCiqpcpqp 

obobobdbdbabt^t^t^t^t^t^b- 






I NHOO"OOMNOiH>0 
O WW(M!M(M(NHHHHOOO 

^ aoocoooooDooaoaDaoaoGO^oo 
00000000000000000000000000 






00 


OQOOIMONtPONMOOIM 

abobobooobobobabobabocabob 



00 



is 


HOMOCOHON>OWHON 

t^cpcpcpppipipipipip^^ 
obobabebabobobobabobabobob 

i^jCOOOOCCOOOOOOCO 








OOt l^r^OCOiOOOQC^lOJ^O 
opopopqpqocpb~i^t>b~i>-t^p 

obobobobobabobobabobobobob 








HNWOOOOHN(NN(MN 

QOOOCOWHOQOOiOCCfMO 
0000000009^^ 

66o666a)iaco5( 








lO-^WHOOONlO'^HOOOO 
OiOt)(CO(MOOOONOM(M 
CN<NCN<NCN<NT7lrHrHr-lrHrHrH 
OOOOOOOOOOOOO 

cococootcococococococococo 


O 
* 




CO 


OOOOOOOOOOOOO 
OqcNCM<MCMOq(MOqC<l(^(M(MG^ 


O 
CO 





KNHOO^QOMNHIOOM 
MNlMHHOOOaiODNOO 

cpcppcpppipipipoipiLpip 

OOOOOOOOOOOOO 
1 1 1 It 1 i IHHr IHHr IHHH 


O 


O 

M 


OOJHOOIOCMOOCOON^H 
HHHOOOC5OOC3 00 00Q0 
apopceGpqpqpt-t^b-l>t>-t^i>- 

OOOOOOOOOOOOO 


O 

ft 


Si 




O 10O m O >oO mo m O *oO 
hi it el c* co co tJ- >sj- o o<3 





ruir 




Departures, or 
Difference of Levels 


7f 


) s " Levels 




1 



TABLE II. 



17 



Departures, or 
Difference of Levels 





Sines 


3 o' 


19081 


I 


19109 


2 


19138 


I 


19166 


4 


19195 


5 


19224 


6 


19252 


7 


19281 


8 


19309 


9 


19338 


10 


19366 


II 


19395 


12 


19423 


13 


19452 


14 


19480 


15 


19509 


16 


19538 


*7 


19566 


18 


19595 


19 


19623 


20 


19652 


21 


19680 


22 


19709 


2? 


19737 


24 


19766 


25 


19794 


26 


19823 


27 


19851 


28 


19880 


*9 


19908 


3 


19937 


3i 


19965 


32 


19994 


33 


20022 


34 


20051 


35 


20079 


36 


20108 


37 


20136 


38 


20165 


39 


20193 


40 


20222 


4i 


20250 


42 


20279 


43 


20307 


4-! 


20336 


45 


20364 


46 


20393 


47 


20421 


48 


"20450 


49 


20478 


$0 


20506 


51 


20535 


5* 


20563 


53 


20592 


54 


20620 


ss 


20649 


56 


20677 


57 


20706 


58 


20734 


59 


20763 


60 


20791 




Cosines 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 



11 e&. 



Departures, or Difference of 
Levels 



O w->o v>o *oo *> o ^0 wiO 
o 



QONOOiOOCON(MOOitQ 
ONMiOONOOCqWOCSN 

OOOiOOOOOOOOOO 
r li li-Hi li lr-lrHC<JC<JG^(?q(N<M 



MHOOOOiOHOQOOt)((M 
NCMiOTOH^NO^iOQOH 
HCO^iOOOOOOfNCOTltiON 

t^r^t>t^^r^t^<QOooaDao<X) 



n 

%* 



_ t- o o 

WWTJiONCOOiOHfM^kpO 



w*ooimx)oohws:^io 



oo^oiOHOcqaoMoo^oio 

<*i>5(MONO^OOHOQON 
r|<OONl>0pffi9HCTCCW* 



^r-tOOiOOJOSO^i IGOiOCMO 
lpOCpt^GOQpOOrHrHf^lCpOp 

OOOOCiOSOOOOoOO 



COQO^OOHNCOOO^OOH 



woHooMooff)00<ooo: 

t>I^<qOGpq}CSpprHrHrH<7q 

lbibooibibibcbcbcbooo 



OiOCOCTOONO^OHOlX) 

HTtlNOMiOCOHr)<NOMiO 
QOOOOOOffiQOiOOOHHH 



CONNHiOOiiaXMOHiOCi 
0(NOONC50(M 59 OCN 

rHrHrHrHpHrHpHCNfflOlC^C^ff^ 



uiO 100 ^O o o >oO 
m H rt M ro tj- ^ 10 vovo 



78 De " 



Latitudes, or Horizontal Dis- 
tances for Difference of Levels 



48 








TABLE II. 






Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 


GO 

H 
> 

a 




@ 

1 

1 1 
P 

O 

5 

GO 
g 

| 

H 

CO 

P 

H 
C 

i 



w 



of 

H 
P 

B 

H 
H 

h3 


* Q _, Latitudes, or Horizontal Dis- 
A<w es * tances for Difference of Levels 


12 o' 
i 

2 

3 
4 
5 
6 
7 
8 
9 

10 

ii 

12 

13 
14 
15 
16 

7 
18 

19 

20 

ZI 

22 
23 

24 

25 

26 

27 
28 

29 

30 

31 
32 

33 

34 
35 
36 
37 
38 
39 
40 

4i 
42 
43 
44 
45 
46 
47 
48 
49 
50 

5i 
52 
53 

54 
55 

56 

57 
58 

I? 

60 


Cosines 
97815 
97809 
97803 
97797 
97790 

97784 
97778 
97772 
97766 
97760 
'97754 

97748 
97742 
97735 
97729 
97723 
97717 
977 1 1 
97705 
97698 
97692 

97686 
97680 
97673 
97667 
97661 

97655 
'97648 
97642 
97636 
97630 

97623 
97617 
9761 1 
97604 
97598 

97592 
97585 
'97579 

97566 

9756o 
"97553 
97547 
97541 
97534 
97528 
97521 
97515 
975o8 
97502 

97496 
97489 
97483 
97476 

97470 

97463 

97457 
97450 
97444 
97437 
Sines 


60' 
59 
58 

% 

55 

54 
53 
52 
5i 

50 

49 
48 

46 
45 

44 
43 
42 
4i 

40 

39 
38 

11 

35 

34 
33 

32 
31 
30 

29 
28 

2 

25 

24 
23 
22 
21 
20 

19 

18 

\l 

15 

14 
13 
12 
11 
10 

I 

I 

5 

4 
3 

2 

1 
077 




O >oO w-io oO >oO 100 oo 


11 

1! 
a3 


\ 
\ 

CO 

p 

ft 



ft 



ft 
1 

p 





go" 

p 

ft 
p 










HooiONOoeoo>oc30Nco 
cpb^b-b^pppoooo-'*^ 
b-b-b-b~b-b-b-b~b-b-b-b-b~ 

OiOiCiaaaGiCiCiCiOiCia 






WON0(NC5OC0O00i0iMO 

ppqiCic:(X)ooGpoob-.b-b-o 

ODODNNNNNNNNNNN 

00 00 0000000000000000000000 




ON 


6 

00 


(Mt^COOO-^O-^OOCOb-fMOO 
0(MOMO(MCh0(NCN"0 
(N(N(NhhhhoOOOOQ 
obobobobabobabdbocobxb-b- 
b- b- b- b- b- b- b~ b- b- b- b- b- b- 



00 


O 


OO00Ot((C0HOOt((hC5O 
N^IMOODO^HOMCMO 

cfcaoopopobobobobccdoobdbab 

0000000000000 






vo 


GO<M^U3S0COOOHNiM 
ti003HOt>OM(NOQ0O 

ppppooooooo^-^ 
obxcbcoababobobobaoobobob 
iooooooooooooo 



vo 


O 


N(MNHCO>OffiMNrlUJOO 
OONO^OOHOJOOClOOH 

popopcpopcpopb-b-b-b-t^b- 

obcbabobobobccaodbabobabob 





% 


(MHO$SOW93'MHO00N 

HHHOoopoooooa 
csocsoiocicscscscsciooao 
cococococococococococococo 







CO 


TjilCONQOCOCi0500HHH 




CO 


O 


OONHiOCOtMOClWNO^N 
OOO"*C0C0<MrHi IOOOOO 
lOOOOOOOOOOO^^J 

pHrHi Ii Ii ir lr liir- 1 H r- Ii IrH 





O 


HOOiONOCOMONMONtP 

aob-b^b-ooooooo^Tfr 
OJOOC10C5GS05GSCSOOSC5 





I! 


O "10 yn *o "> O *<"> O f> 

M HI H tf M tO TJ- TJ- lO U")VO 










Departures, or 
Difference of Levels 


7 K 


k _ uepartures, or jjinere 
J De8r - Levels 


ace c 


)I 











TABLE II. 




49 


Departures, or 
Difference of Levels 


m 
>A 

K 
H 





m 
g 

P 

O 
Of 

w 
p 

w 

ft 


iq _ Departures, or Difference of 
1<6 "" Levels 


12 o' 

I 

2 
3 

4 
5 
6 

7 
8 

9 

IO 

ii 

12 

13 
14 

*5 

16 

17 
18 

19 

20 

21 

22 
13 
24 
*5 
20 

27 

28 

29 

3 

31 

32 

33 
34 
35 
36 

37 

3 

! 39 

40 

4i 

42 

43 

44 
45 
46 

1 4 l 
48 

49 

50' 

5i 
52 
53 
54 
55 
56 
57 
58 
59 
60 


Sines 
20791 

20&20 
20848 
20876 
20905 
20933 

20962 
20990 
21019 
21047 
21076 

21 104 
21132 
21 161 
21189 
21218 

21246 
21275 
21303 
21331 
21360 

21388 
21417 
21445 
21473 
21502 

21530 
21559 
21587 
21616 
21644 

21672 
21701 
21729 
21757 
21786 

21814 
21843 
21871 
21899 
21928 

21956 
21985 
22013 
22041 
22070 

22098 
22126 
22155 
22153 
22212 

22240 
22268 
22297 
22325 
22353 

22382 
22410 
22438 
22467 
22495 
Cosines 


6V 

59 
5 

S l 
56 

55 

54 
53 
52 
5i 

50 

49 
48 

46 

45 

44 
43 
42 
41 
40 

J9 
38 

is 

35 

34 
33 

32. 
31 

30 

29 
28 

26 

2-5 

24 
23 

22 
21 
20 

19 
18 

3 

15 

14 
13 
12 
11 
10 

9 

8 

I 

5 

4 
3 

2 
1 

o77 


*b n O /">o "o >oo oo *-> 

vo >o >o tJ- ^- M M t) C M M 

O 

1 t^ 


If 

%3 


m 
> 



B 

i 

rH 
CO 

W 

O 

H 
P 

r3 
<1 

H 
fe 

O 

i 
3 
O 

H 



CO 

W 

P 

b 

H 

hH 

EH 

5 







HM'O00O(Mt((Oq0O(MM10 

OiMNHOOiiQOtNNHiOCJ 









H^OaiMiONOCOCDOHi 

t>qpc5p<Ncp^pt>opq5rHCN 
obobobdiCiC50ic3ich>620ioo 

HHHr- (1 Ii (r- 1 1 IHr- 1 1 1 <M CN 


O 



00 


MNO^OOHiOGiWOOMCO 
M^ONQOOHfM'-tiOOOOQ 

pt^oppp^cp-'+ippb-qpp 




00 





^MWCqCTHHOOQOONCD 

ipcpi>-qpoprHqqcp^iocoi>. 

rHrHi 1 1 1 t 1 1 1 1 IHHHr- Ii IrH 



r-. 


O 


00'OHCHCOHN(flN(MN 
l> O "^ CO 1 lOQOMO^IMr- 1 05 
^ipCt>CCOOCHCTMTt)TJ< 

ic^c^^<>icq<Ncbcbcbcbcocb 

pHi It IHr liii it 1 1 Ii IHHH 








!ONOOOOH(MtHiOONN 

OOKOOOiOlNOiSeJON^ 

co^ippcpt^cpooqiprHrHqq 

OOOOOOOOOrHrHrHrH 





O 


OWONT}IHQOi<HQOOHCO 

cpco^^oppt^t^qocppp 
<cbdoaoccc&ob&&aodb 





O 

CO 


noooioo6owxhcoo 

OOX(MOOiOQOON(MCOt)l 

^c^cpcp^^^xpoppt^t^. 




CO 




H 


Q0J>.i0C0G<lO05l>,C0^rl0qr-IO 

lOOOH-^NOlMOQOH^NOJ 
rHrH^^t^CpcpcpCp^Tlr^Ttl^rl 





O 


05C00001CDO^0iC0t>.r- liOO 

P.QONCOiOCNOJOfMCO'Jl 
COHHHHHHH^IMIMIM 





u 


*0 *0 O **"> O >oO */"> O >flO o O 
m m n p> co co <$ ^- u-> cnvo 



Latit 
Bonta 

Differ 


udes, or Hon- j 
I Distances for 
enoe of Levels ' 


mm Latitudes, or Horizontal ] 
# I es ' tances for Difference of Le 1 


)is. 

rels 



50 








TABLE II. 






Latitudes, or Hori- 
zontal Distances for 
Difference of Levels ! 


GO 

3 

> 
H 
h) 

ft 

O 



F 

i 

g 

a 


to 

H 
go 

11 

A 

s 




H 



DO* 

H 
P 

B 

i 


^ q Latitudes, or Horizontal Dis- 
XO esr " tances for Difference of Levels 


13 o' 

2 

3 

4 
5 
6 

7 
8 

9 

IO 

ii 

12 

13 
14 
15 
16 

17 
iS 

*9 

20 

21 

22 

*3 
24 

25 

26 

27 
28 
29 

30 

3i 

32 
33 
34 
35 

36 

37 
38 
39 

40 

4i 

42 
43 
44 
45 
46 
47 
48 
49 
50 

5i 

52 
53 
54 
55 

56 

57 
58 


Cosines 

"97437 
97430 
97424 

97417 
9741 1 
97404 

97398 
97391 

97384 
97378 
97371 

9736"4 
97358 
97351 
'97345 
97338 

97331 
97325 
97318 
973 1 1 
97304 
97298 
97291 
97284 
97278 
97271 

97264 

97257 
97251 
97244 
97237 
"97230 
97223 
97217 
97210 
97203 
97196 
97189 
97182 

'97 7S 
97169 

97162 
97155 
97148 
97 141 
"97!34 
97127 
97120 
971 1 3 
97106 
97099 

97092 
97086 

97079 
97072 
97065 

97058 
97051 

97044 
97037 
97030 
Sines 


60' 
59 
58 

% 

55 

54 
53 
52 
5i 
50 

49 
48 

46 
45 

44 
43 
42 
4i 
40 

39 
38 

11 

35 

34 
33 
32 
3i 

3o 

29 
28 

26 

25 
24 

23 
22 
21 
20 

:? 
\i 

15 

H 

13 
12 
11 

10 

9 
8 

I 

5 

4 
3 

2 

I 
0*76 






*0 "j-iO *o O o O o O l o O *o 


P 


GO 
3 

> 
a 



H 



P 

P^ 
ft 

Q 

O 
of 

a 

p 

H 

A 


CCONONCOOOCCOO(M 
^b-b-b-b~b~b~b~b~b~b~b~b-- 


O 
O 




ON 


0MON^HQ010(MQOO(M 

b~b-b~b-b~b-b-b~b-b~b-b-b- 

O0O0O0OOO0Q0COGOOOO0QOO00O 


O 


O 


ownomno(mu:nc5(mo5 

5(NONTtiHOCOONiO(M 
OOCOOOOOOONNNInCOO 
b~b~b-bb-b-b~b~b-b-b~b-l> 
b-bb~bb-b-b-b~l>t>t>b-b- 


O 

OO 




O 
bs 


68-206 
68-183 
68-160 
68-137 
68-113 
68-090 
68-066 
68-042 
68-018 
67-994 
67-969 
67-945 
67-920 




VO 


N(MOOCO(M(M(M(MHOOON 

OTf(MQQOCD^(NOOOifflH 

abcb<obabc(#cbccbobdbabdo 




VO 





HOooOONHOOOOiicOH 
NNOOOCpcpcpiOpQ IO O 
cabcabcaDobcbcbcEaO(Xao 

Tjl "^1 "^p TJi ^^ *^T ^T ^^ "^ ^^ "TjH T^ ^^ 








lOi IQOlOi 1 OO O H 00 r|* O O (N 

NO^WCqOOOOCDLO^tMH 

csooiOiOiCiopopapopopaOGp 
<cbab(obabobobcabaDoDoo 
cococowcocococooocoeococo 


i 




CO 


HHHHHHHHHOOOO 
WfMHOOOONffiiO-^eOHO 
(^(N^^rHrHrHrHrHrHrHrHrH 

0Jffio6CJC3OCjC)OQO 




CI 





NHT)lQOHTjiNHT)(NOCOO 
OOOONOCDlO-^rJ(CO<M(MHO 

1 (r IHHr Ii (1 Ii 1 H r- IrHrHr 1 








iiOSTliONitOSOOOW 
b-b-b-l>.b~b-t>.b-b~b-b-b-b. 





If 


O 00 >oO wi O iflO oO ^ O 
H w H tf M Cl -i- ^- >0 OVO 




t\ rv.fr 


Df 


Departures, or 
Difference of Levels 


7( 


J De &- Levels 


uue 



TABLE II. 



51 



Departures, or 

nee of Levels 



ijo' 
I 

2 

3 

4 
5 
6 

7 
8 

9 
io 



22495 

2252} 
22552 
2258O 
226o8 
226j7 

22665 
226Q3 
22722 
22750 
22778 

22807 
22835 
22863 
22892 
2292O 

22948 
22977 
23OO5 
23033 
23062 

2309O 

23H8 
23146 

23175 
23203 

23231 
23260 
23289 
23316 

23344 

23373 
23401 
23429 
23458 
23486 

23514 

23542 
23571 
23599 
23627 

23655 
23684 
23712 
23740 
23769 

23797 
23825 
23853 
23882 
23910 

23966 
23995 
24023 
24051 

24079 
24107 
24136 
24164 
24192 
Cosines 



076 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 



13 De * 



Departures, or Difference of 
Levels 



? 



IS 



U5NOOO(M1iONCOH(M 
OMNfMOO-t'GONOHiOO 
<tCDNOO(Ne:T)iNQOH 



G^ 65 ip p" lj 6t>p rH qq cp ip S b- 

OOOOOOrHrHr^-lrHrHr^HrH 



OOiMCDOfMiOOODOQOHTJf 

OH(Nn^pCOI>QOH(MCO 



COCOtOTt<M(MHOQQONCO^ 

t^qpqiOrHcqco-^ipcpi>.ooo 



OSQOCDlOCCC^QCSb'CD'^COrH 

TliiOONQpCiOOHfNCO^iO 



t^oocio.-ir-tcqco^^ioioco 

*H00OMON^H00iO(MCi 
MCOWTjfiOOCCNQOCOCOO 



OOHHfN^WMTttipipOO 



00r-ICOCDOirHCOCO00i-IC0lO00 

NNOOOOOJOOOOHH^tM 



NCOTJiiMHONlOTifCTOOO 
TtHOOiOOCOCOONNNOOOO 



*onoocto:^nooh 
cqcNCTcqcpc^cpcpcpcpcp'^Th 



76 



Latitudes, or Horizontal Dis- 
s * tances for Difference of 1 



52 



TABLE II. 



J Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 


I 

fa 



H 

1 

p 



fa 

QQ 

w 



H 
w 
t ( 

p 

O 

N 

1 i 

M 

O 
W 


a? 

p 
p 

H 

t 1 

H 


, 

14 Deg- Latitudes, or Horizontal Dis- 
x ^ B ' tances for Difference of Levels 


i4o' 

2 
3 
4 
5 
6 

7 
8 
9 

IO 

ii 

12 

13 
14 
15 
16 

7 
18 

19 

20 

21 

22 

*3 

24 

25 
26 

*7 

28 
29 
jo 

3i 

32 
33 
34 
35 
36 
37 
38 
39 
40 

4i 
42 
43 
44 
45 
46 
47 
48 
49 
50 

5i 
$ 

53 
54 
55 
56 
57 
58 

12 


Cosines 
97030 
97022 
97015 
97008 
97001 
96994 

96987 
96980 
96973 
96966 
96959 

96952 
96944 
96937 
96930 
96923 

96916 

96909 
96902 
96894 
96887 

96880 
96873 
96866 
97858 
96851 

96844 
96837 
96829 
96822 
96815 

96807 
96800 
96793 
96786 
96778 

96771 
96764 
96756 
96749 
96741 

96734 
96727 
96719 
96712 
96705 

96697 
96690 
96682 

96667 
96660 

96645 
96638 
96630 

96623 
96615 
96608 
96600 
96593 
Sines 


60' 
59 
58 

55 

54 
53 

52 
5i 

50 

49 

48 

46 
45 

44 
43 
42 
4i 

40 

39 
38 

H 

35 

34 
33 
3a 
3i 

30 

29 
28 

26 

*5 
24 
23 
22 
21 
20 

I! 
\l 

15 

14 
13 
12 
11 

10 

9 
8 

I 

S 

4 
3 

2 

075 




O 100 10O 100 *j">0 >oO *oo 
O 


S2 

S>3 


fa 

s> 

fa 

PE| 

O 

fa 


fa 

fa 
fa 

fa 

M 

P 





af 

fa 

1 

Oh 
fa 
P 







CTOiiOfMOOiOHN^OCWffi 
OQQQ0i05OC6OOOOCl 









O0C0H00CDWON^ONC0 

(M0500500MOOCOOCOM 

MW^PIHHHHOOOOO 

00000000000000000000000000 




ON 




00 


COlOI>-00r-l(N<N<MCO"'*''*Tj< 

(MOOCCHOOiO(NC5COCOON 


O 
00 





OOHOHOOiOOCONHTf 
(MON^WQN^HQCOiiH 

t^- 1>- 1 t^- t^- t>- 1- i>- 1^ t>. t>- 1^ i>- 









NCOOTX(MHGiNiO(NQQOO 
HONiQWHOOOiflMONiO 
(NrHrHr^rHr-ICpOOOOOO 

obcbobobobobabobobobaot^b- 






HC2NfflrtMOOONiOWiHQ 

ccobobobobccobobobobobobob 

^P Tji "^1 TJi TJH T71 ^H t^H t^/i T^H t^ '^4 ^^ 






* 


(MN^C3iOOOHO(MN(MN 
HOQOCOOrtiClHOiOOCDiOCO 
0)Nt>t>NNNNffiOOO 

obobaDcboccfeabobobobobaboo 
cococococococococococococo 







CO 


CSOOOOt^COO^COG^rHOG5QO 

OQOONOiO^CO<MHO'30N 

rHopopoopoppoqs 

6666666656660360 




CO 



c4 


COOWONOMOOOHMOOO 
OC5O1>NO>0t|1^WCTH 

6666666666666 








WOCDCTOiOHOO^ONMO 
O C3 O O CO X 1 00 N N N O iQ 

6666666666666 


O 




"0 voo >00 uio >o O ^ O viO 
hi w H M mm ^tJ-io iovo 








Departures, or 
Difference of Levels 


7 


> Deff " Levels 


3nce 


UJ. 











TABLE II. 




63 


Departures, or 
Difference of Levels 


m 

3 

1 

O 
O 
3 

& 
ft 

O 
a? 


P 

H 
ft 


1 4. Dee Departures, or Difference of ', 
" *' Levels 


14 o' 

i 

2 

3 

4 
5 
6 
7 
8 
9 

IO 

II 

12 
*3 
14 
15 

16 

17 
18 

*9 

20 

- 21 

22 
23 
24 

*5 

26 

27 
28 
29 
30 

3i 

?a 
33 
34 
35 
36 
37 
38 
39 
40 

4i 

42 
43 
44 
45 
46 

47 
48 

49 

5o 

5i 

5* ; 

53 

54 

55 

56 

57 

58 

s 


Sines 
24192 
24220 
24248 
24277 
24305 
24333 
24361 
24390 
24417 
24446 
24474 

24502 
24531 
24560 
24587 
24615 

24643 
24672 
24700 
24728 
24756 

24784 
24813 
24841 
24869 
24897 

24925 
24953 
24982 
25010 
25038 

25066 
25094 
25122 
25151 
25179 

25207 
25235 
25263 
25291 
25319 

25348 
25376 
25404 
25432 
25460 

25488 
25516 
25545 
25573 
25601 

25629 
25657 
25685 
25713 
25741 

25769 
25798 
25826 
25854 
25882 
Cosines 


60' 
59 
58 

S? 

55 

54 
53 

52 
5i 

5o 

49 
48 

46 

45 

44 
43 
42 
4i 
40 

39 
38 

\l 

35 

34 
33 
32 
3i 
30 

29 
28 

2 

25 

24 
23 

22 
21 
20 

19 
18 

\l 

15 

14 
13 
12 
11 

10 

9 
8 

I 

5 

4 
3 

2 

075 




O to to 00 w->o 00 oo 
vo >oo^-^ tort N w i-c 

O 
o 


is 


3 
1 

Q 

1 

1 

1 1 

ft 

s 


< 

H 
CG 
M 

ft 

O 

N 

t 1 

w 



M 

O 

of 
ft 

ft 

B 

H 
t 1 
H 
<1 






OCONHiOOWNHOOitQO 
rHCO^OI^qOprHCp^Ob-qO 










NOOHCNTtfiOONOOH^ 
rH rH f>1 Oq (jq cq f>} (fl <fq * CO 00 CO 
<MCqCM<M<N(MC^0ieq<MCN<M01 







00 


^NOXMiOOOOWCbOOHeOiO 

lOCONOOHDJ^ioO'XOO 
Cp^ipcpcpOOHtNcp^ON 

cscicscaooooopooo 

r-lpHr-lr-lr-lrHCMCMC^^CMC^Sq 




00 





COCOCOCOG^cqCMCNCN'NCq^Hi-l 
OOHtNM^OCpNOOOOH 








lOOiOO^OOMNNOOOO 
HOXOiOCONOONOitM 
ipOCpt^GOqSprHrHCNCp-^lO 

1 1 1 1 1 I 1 li li IHHr- li It It- IrH 




vo 




tO 


OONXXQOOOOOOHH 
OOWON'lHXJOnON^ 
OrH!>4CpCpTjlipOCpb-(X)COa) 

c<icqeq<?q<jq(q(fq<^c^cqc>q<fqcq 

1 li IrHr IrHi It li IrHi IrHi li 1 



o 





NMOOlMOiOHQOTtiOOCO 
NMO^OOr-iN(MOOT|l35iO 

cpt^i^opcsppcpr^irHC^cqcp 

P- 1 T 1 I-H I 1 T-H T 1 T 1 


I 




CO 


ooiixxMOHioojcoaxNO 

(NMWWT|lT|lipippOONN 




CO 





OONiCWHOOOOTPfMOOpO 
CD C3 'M O N O CO O C3 iM H< N 
qpqpopCi OOO9O7IHH 





O 

If 
II 


CiCONHOO^OOfMCOO^QO 
1 iCOTHSOt^GiOr- 1 CO 'H O C^ 00 


O 


O oO too too too to O too 
w 11 cJ d MM + + >o to\o 

% 




Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 


m pr Latitudes, or Horizontal Dis- 
4 O es ' tances for Difference of Levels 



84 



TABLE II. 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 



15 o' 

i 

2 

3 

4 
5 
6 

7 
8 

9 

io 



Cosines 
9659? 
96585 
96577 
96570 
96562 
96555 
96547 
96540 
96532 
96524 
96517 
96509 
96502 
96494 
96486 
96479 

96471 
9646} 
96456 
96448 
96440 

'9643 J 
96425 
96417 
96409 
96402 



9638* 
96378 

96363 

96355 
96347 
96340 
96332 
96324 

96316 
96308 
96301 
96293 
96285 
96277 
96269 
96261 
96253 
96245 

96238 
96230 
96222 
96214 
96206 

96198 
96190 
96182 
96174 
96166 

96158 
96150 
96142 
96134 
96126 

Sines 



074 



Departures, or 
Difference of levels 



15 De s- 



Latitudes, or Horizontal Dis- 
tances for Difference of Levels 



O >o O /iO oO "1 O o O ") O 



XpOlO^^^COCCCMCMCMr-lrH 

0666666666066 



OiOHO(MOHOOOOW 
WCtOQO(MCiiOCTOC^H 
Ciopopopt^t^t^OCpOipipp 

6666666666666 

00O0GOO0O0O0COO0COO0O0O0GO 



NT)tHOOiO(MOO(MCiOnO 
(MM<MHHHOOOOOOQ 



HQOOCOOOOiOCTON-fHCO 



iomhooo^hon^non 
oogiopopcpcpt^.i>-i>-t^i^o 

10 o 10 10 io o io 10 10 o o 10 o 



CNOWfMOOOC^IMOOOO 
(NM(M!MCN(NHHHHHOO 

^p ^yi ^71 ^"l ^1 ^^ T^l ^1 ^^1 ^1 ^J! T31 







N(MN(NOHK5QilaDiMOO 
MC^OCNO-ffMHQXOO 

obaoobobobooobobobobobaoob 
cooococococococccocticococo 



N O 10 -f M 
OOiCiCiOOOOOGOOOOOQOaO 

obobobobobaocofTodoobooobob 

CM CM CM CM CM CM CM CM CM CM CM CM CM 



oOH05aooiONHM)o 

hhOOOOOONOiO^tPM^ 
CO CC CO CM CM CM CM CM CM CM CM CM CM 



iiOCMOO'^O^O'MOO'+i-it^cO 

UO>0'*'t"+MWC-l!M(MHH 
1OOOOOOOOOOOO 



10 I - 



>oO *o O **-> O o O oo *o O 
M hi M M M CO tj- ^- 10 vrvvo 



W /| Departures, or Difference of 

^* e8: " Levels 











TABLE II. 




55 


Departures, or 
Difference of Levels 


1 
i 

O 

1 
I 

H 

P 

P4 



of 

3 
B 

a 

i 

P 


1 r _ Departures, or Difference of 
15 * * Levels 


15 o' 
i 

2 
3 

4 
5 
6 

7 
8 

9 

IO 

ii 

12 
I? 

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 

4i 
42 

43 
44 
45 
46 
47 
48 
49 
50 

5i 

52 
53 
54 
55 

56 

57 
58 

60 


Sines 
25882 
25910 

25966 
25994 
26022 

26050 
26078 
26107 

26l63 

2619I 
262I9 
26247 
26275 
263O3 

26331 
26359 
26387 
264I5 
26443 

2647I 
26499 
26528 
26556 
26584 

266l2 
2664O 
26668 
26696 
26724 

26752 
26780 
26808 
26836 
26864 

26892 
2692O 
26948 
26976 

27OO4 

27032 
27060 
27088 
27II6 
27144 

27I72 
27200 
27228 
27256 
27284 

27312 
27340 
27368 
27396 
27424 

27452 
27480 
27508 
27536 
27564 

Cosines 


60' 
59 
58 

56 

55 

54 
53 
5* 

51 

50 

49 
48 

46 
45 

44 
43 
42 
4i 
40 

39 
38 

11 

35 

34 
33 
3a 
3i 

30 

29 
28 

26 

25 

24 
23 
22 
21 
20 

I? 
3 

15 

14 
13 
12 
11 
10 

9 

8 

I 

5 

4 
3 

2 
1 
074 






*b >oo o o 10O >oO >oo 
O k-i r}- ^- co co H cJ m ih 


11 

3s a 


w 

w 

T> 

r3 

Ph 

O 



1 

rH 

M 
P 

C 

r^ 
CO 
O 

< 

H 
CO 

P 
<1 

H 



1 

3 



M 

H 



of 

p 
p 

H 

M 

IH 


OOfNOO^QO^OO^CONCD 
oppr^Cp^lCb-qOprHCN^O 










fOOCOQiOHOO^OOfMOO 
(M^NO^iONOnOQOO 
CT^lOCpt^-pprHCp-^OCpCp 




ON 




00 


lOQOO(N)ONQHWONOH 
OHM^lOONOH(MCO0 
b-0ppOr7lC^cp^Cpt>-Qpqip 

OOOHHHHHHHHHN 


O 
00 





NO^WOQON>OMHONlO 
hhhhhOOOOOOOO 
rH(>lCp^OCpt>.cpqipprHCN 

obcobccao6oobcbdiod)C) 

1 IHHr Ir- lr IrHr Ii Ii It iHr 1 







vo 


CiCOOOC^OO^QOS^CDO^HOO 

(MHQOOiOCOHOOON|Oo: 
lOCOONqDQOHCTCTW^ip 

T Ii Ii Ii ItHt Ii IrHilT-lrHT lr 1 








tJ(HOOiO(MCiOMOI>t)*HOO 




10 


3- 


MC5>OHN00OO(M00tJ<OO 
lOOONNWOO^OOHNIM 
ooH^ipippcpt^cpcpCscsp 
OOOOOOOOOOOOH 
1 It IHr- Ii IHr IHHr It It IrH 


% 




CO 


^NOJHMiONOiHMiONO 
OO^OMNHiOO^OO(MO 
NQOQOOOfflOOOHHHCq^ 

i>^i>t>t>t>cbcbcbcccbdbao 




CO 


O 


il^HCiN'OWHONWJOJ 
NOMOOOHHNOfMiOOOH 
rH^^C^C^OOCCCO^-H^^O 


O 


O 


OOOHCOHLONODOHOlTJIlO 
IOOCOOOOOONNNNN 


O 


55 


*b vr>0 <oO >oO oO >oO *o O 

H H rt MMi + >fl o^O 










Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 


7- 


* Latitudes, or Horizom 
X De &' tances for Difference of 


alD 
Lev 


1S- 

els 



56 








TABLE II. 






Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 


W 

> 


w 

1 

P 
g 



H 

HH 

P. 

H 
B 

O 
N 

3 
O 

w 

m 



p 
p 

H 

M 

s 

h3 


|/> _ Latitudes, or Horizontal Dis- 
2,0 e8r * tances for Difference of Levels 


i6c' 

i 

2 
3 

4 
5 
6 

7 
8 

9 

to 

ii 

12 

13 
14 

15 

16 

17 
18 

*9 

20 

21 

22 

23 
24 
25 
26 

27 

28 

29 

30 

31 

32 

33 
34 
35 

36 
37 
J8 

39 

40 

4* 
42 
43 

44 
45 
46 
47 
48 
49 
50 

5i 
52 
53 
54 
55 
56 
57 
58 

60 


Cosines 
96126 
96118 
96110 
96102 
96094 
96086 

96078 
96070 
96062 
96054 
96046 

96037 
96029 
96021 
96013 
96005 

95997 
95989 
95980 
95972 
95964 

95956 
95948 
95940 
95931 
95923 

'959*5 
95907 
95898 
95890 
95882 

95374 
95565 
95857 
95849 
95841 

95232 
95824 
958 1 6 
95807 
95799 

95791 
95782 
'95774 
95765 

'95757 

95749 
95740 
95732 
95723 
95715 
95707 
95698 
95690 
95681 
95 6 73 
95664 
95656 
95647 
95639 
95630 
Sines 


60' 
59 
58 

56 
55 

54 
53 
52 
5i 

50 

49 
48 

46 
45 

44 
43 
42 
41 

40 

39 
38 

36 
35 

34 
33 

32 
3i 
30 

29 
28 

11 

25 

24 
23 
22 
21 

20 

19 
18 

\l 

15 

14 
13 
12 
11 

10 

9 
8 
7 
6 
5 

4 
3 

2 
1 
073 




O o >oO o O >oO o o O 
vo V) >o r|- + w to M tf 11 ci 

O 
to 


Ii 

3 


w 
p 

A 

O 
O 

3 

P 

Pn 

Ph 

h- 1 

P 

O 

w 


"P 
H 

P 





M 


OCOiOTfWtMOONiOWO 
(N X -* O C W * -f Ci iC h N CO 
r7ippppcccpi>t^i>-pp 
cb cb cb ib 10 10 10 ib ib 1 ib 

OOOOOOOOOOOOO 






O 

ON 


CCNO-^GOH^OOHWON 
HN^OCOWOOHQO^OO 
lO-^^-rtlcpcC^q^CNrHrHT IO 

cb 6 6 6 6 c 6 6 6 6 6 6 

OOQOOOOOQOOOOOQOOOCOQOQOOO 




ON 


O 
00 


HOO^HGOOWOOWOO^ 
OOKONCCONMONWO 

pcccccpt^t-t^pppipipip 
cbcbcbcbcbcbcboocbcbcbcb 




00 





XOHCOiOONCCOJOOHH 

ooto?:o^^HooiooN^ 
CTc^cqq^PTirHrTHppcppcpcp 

NNNNNNNNNNNCO 

OOOCCCOwOCOOOC 








OCMt>.C0a0-**O^O-^O^a0 
t^ iC CM Q b- i-O WONiClMON 
ppppipipipip-^-rjH-^i^Cp 

lOiOiOiOiOiOiOiOiOiOiOiOlO 




VO 





0"<*(NOOOC^(MC3N10MH 

ppppppppopcpcpopqD 

00 00 00 CO b- b- b- b- b~ b b> b~ b- 





O 


OWHOCiOM(MOX'COiO 

cbcccccbcbobcccbrocbcfecbcb 
cccoct!cocococ?cccosowcoco 





O 
CO 


00MHC5NLOCTON^(MO 
CC Ol -h O 00 N C C tJi ^ H O X) 
qp CO cp qp b- b- t> b- b b- t> b- p 
cbcbcccbcbcccccbcorbcbcbcb 
cmcmcn<mcncmcmcmcm<n<ncmcn 




to 



n 




iCNOHOO>OCDGOOH^iOCO 
(NhOOOX b- O O 10 Tf CO (N 

^1 CT CT W H -H H H H rn H H M 

6 ci c 6 6 c d 6 6 6 6 6 6 



Pi 


MQr}iOCO(MTO^OOHNCO 

HOOOOOXCOXNNOO 

p p CO ip ip ip ip ip ip ip ip 

6000660060006 





,1*0 *^0 flO vo O o O o O o O 

9 

5 : 

35 1 H 








De 

Differ 


partures, or 

ence of Levels 


7r 


3 De *' x Levels 


nee 





TABLE II. 



-7 



Departures, or 

Difference of Levels 


GC 




fej 

1 

Ph 
hH 

P 
O 

of 
H 

p 

H 

<1 
Ph 

P 


1/ _ Departures, or Dillon 
16 * P 'Levels 


nee of 


i6o' 
i 

2 

3 

4 
5 
6 

7 
8 

9 

io 

ii 

12 

*3 
14 
15 
16 

*7 
18 

IQ 

20 

21 

22 

*3 
*4 
*5 

26 

27 
28 
29 
3o 

3i 

32 
33 

34 
35 
36 
37 
38 
39 
40 

4i 

42 
43 
44 
45 
46 
47 
48 

49 

5o 

5i 

52 
53 
54 
55 

56 

57 
58 

60 


Sines 
27564 
27592 
27620 
27648 
27676 
27703 

27731 
27759 
27787 
27815 
27843 

27871 
27899 
27927 
27955 
27983 

2801 1 
28039 
28067 
28095 
28122 

28150 
28178 
28206 
28234 
28262 

28290 
28318 
28346 
28374 
28401 

28029 

28457 
28485 
28513 
28541 

28569 
28597 
28625 
28652 
28680 

28708 
28736 
28764 
28792 
28820 

28847 
28875 
28903 
28931 
28959 

28987 
29014 
29042 
29070 
29098 

29126 
29154 
291 8 1 
29209 
29237 
Cosines 


60' 
59 
58 

3 

55 

54 
53 

52 
5i 

5o 

49 
48 

46 
45 

44 
43 

42 

4i 

40 

39 
38 

36 
35 

34 
33 

32 
3i 

30 

29 

28 

2 

25 
24 
23 
22 
21 
20 

19 
18 

\l 

15 

14 
13 

12 
11 
10 

9 
8 

I 

5 

4 
3 

2 
1 

073 






O >flO w-io 10 O 10O ^ O *oo 
O 

CO 


ll 
9 S 

B o 


> 

Ph 

o 

H 

Q 
fej 

H 

Ph 

& 

P 

g 

c72 

o 

CY3 
i( 

P 

o 

Ph 

o 

hH 

-H 

P5 

o 
w 

P 

hH 

3 





H 


-+ a nw(M(?iHHOOOXN 

OO^CO(MOO^OO(MiOOCO 
ipi^X p i^h CM ^ippqopp CM 
t^^t^i^cbxxcbxxcbcba> 

CMCMCMCMCMCMCMCMCMCMCMCM<M 


O 

o 


O 


QOWOIOOOHNINOOWOOM 
OWOOOHKOCOHWOOO-t 
COOOHO^OOopOOH CO 

r t io o b 10 b >b 0666 

(M (M <;) N CM w cq q (M (^ CT 01 w 


o 

ON 


O 


Hr)iC(X)OHW^ONOOO 
3 CO N 00 C O 1 00 Th U3 CD l^ O 

OH(NCC^ONajOOH(MO 

bq bq cm cm bq bq q b 1 bq 00 cb 00 eb 
cm CM CM cm cm CM CM cm CM CM CM 1 CM 


o 

00 


O 


10 cq o qo c c: h o o ^ h o o 

QCOOCOOOOONNNNCOO 
CM p ^ p p t^ X p O rH CM CO ~fH 

fflffiOOOOOOOOOOO 

Hr-iHHHHrtH(N(N(Mffl(N 


o 

In 


O 
VO 


OOIMOONHlOCC(NiOO(M 
WCTOCNiC-HCTOQ I- iO "* 
OCNNCOOOr-KMWCO^iO 

cb cb cb cb cb cb t^ b- 1^ i>. r^ b- i^ 


o 





cq - i r-t r- i^H^r-ioooooo 

OOiONOCiMON^HN^H 

n cc o c 9 h (n n w f t? io o 

cbcbcbcb^^4|<^4ti-rj<^4H4]H 


o 


% 


COHNWOLOHO^OOMO>0 
NCCKC^OOHNIMOOCCO 
OOrHrH CM CO 00 ^^ipippp 


o 




CO 


OHiONOO<Nt|*OCOC3H 
O rH O CI CO t^ CM CD '. "' -H X CM b~ 
CM CO Op CO ~* T* lp p CD CD I- IN 

xxxxxxxxxxxxob 


o 





CCH-S^lMOXO'fCTON 
h -t O ". CM lO 00 O CO CD C5 (M -+ 
US p ip >0 CD O p l_- t;~ W I;- GO X 

ib o o o o lo o o o o ib b o 


O 





COO^OONCOC^OOCMCO't 

O fr- X CI rH CM -f CD 00 Ct rH Ol 

t> ij* i> b- cp op op co op x x p p 

bl CM bl CM 1 CM CM CM CM CM CM CM CM 


o 


Ii 
a* 


O >o O w> o ^o O "N O *o O loo 
m m n n co co <;* t$- vo u->vo 
o 




Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 


yo _ Latitudes, or Horizon 
O e8 "' tances for Difference oJ 


tal Dis- 
Levels 



oS 



TABLE II. 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 



for 



Cosines 
95630 
95622 
95613 
95605 
95596 
'95588 

95579 
95571 
95562 

95554 
'95545 
95536 
95528 

95519 
95510 
95502 

95493 
95485 
95476 
95467 
95459 
95450 
95441 
'95433 
95424 
95415 
95406 
95398 
95389 
95580 
95372 

95363 
95354 
'95345 
95337 
95328 

95319 

95310 
95301 
95293 
95284 

95266 

95257 
95248 
95240 

95231 
95222 
95213 
95204 
95195 
95186 
95177 
95168 

95159 
95150 

95141 
95133 
95124 
951x5 
95106 

Sines 



4 
3 

2 
1 

0-72 



Departures, or 
Difference of Levels 



|W Latitudes, or Horizontal Dis- 
JL 4 e6 ' tances for Difference of Levels 




O u-io v-io >oO >oO >o O *n O 
O 


^ fcD 








oaoiOfMCuocqoo^oiooo 

COOO^OlOHtXMOOCOClOO 

b xbicibbibibibicbbioib 


O 
O 





ov 


OfMCJiOHNMOOHNMO 
90C300QpQpt>NN99p 

ocobobooibibib^bibo 

OOQOOOQOQOOOGOOOQOOOQOOOOO 


O 

ON 




00 


TfOONNWXNNHOOiO 

ONwoonaowoio(MQO 

66666 6 6666666 
b~b-b-b-bi>.b-b-b-b-b-b~i>. 




00 


O 



1^ 


t 1 <M 1 It Ir-iOOOOb-OO-* 

*hqoo(mooj:omon 

OOOpcpqONNNOOOOiO 

666666 6 66 6 6 66 
oooocoooooocooo 








OOWNHiOOMNOMNO^ 
NiCCTONrJ(NCllNT*HOO 
moiOTMtNWNHHHHOO 


O 







HSi0(NOQ0C^HON0 
CONNNNNOOOOipOip 
b^b^l^b^b^b-b-l>.t-b-b~b-b~ 


O 


E 

M 
P 

O 





(NiOQOH-^OOHTfliOQOOCT 
OCIHOCOO^WHONCO^ 
^ffKNCqHHHHHOOOO 

cccbc(cb(cbcccb(i)dbcb 
cococococococooocococococo 


5- 


of 

B 

Ph 




co 


C0NOO(MHOQ0N10t)(O 

cccbcbcbaodbccccb<x}cb 


O 

CO 





O GO'O OtMM^ONOOOOH 

(NHOOOOOSOiOiMCOlM 
HHHH99OOOOOOO 

t It IrHr 1 1 tr 1 r ir lr It It It Ir 1 










00>0Or)lTjl85l(M(MHHH 







g a 


O w->o >oO voO *o O oO u->0 
w )-i N e* co co <^- <4- ur> w-,vo 







75 


^ Departures, or Differe 
w e ^' Levels 


ace ( 


)f 



TABLE II. 






Departures, or 
Difference of Levels 



17 o' 
i 
2 
3 
4 
5 
6 
7 



*3 

*4 

25 
26 

*7 

28 

29 
JO 

3* 

32 

33 
34 
35 

36 
37 
|8 

39 

40 

4i 

4- 
43 
44 
45 
46 

47 
48 

49 

50 

51 

52 
53 
54 
55 

56 
57 
5 

60 



Sines 
29237 
2926s 
29293 
29321 
29348 
29376 

29404 
29432 
29460 
29487 
295 1 s 

29543 
29571 

29599 
29626 
29654 

29682 
29710 
29737 
29765 
29793 

29821 
29849 
29876 
29904 
29932 

29960 
29987 
30015 
30043 
30071 

30098 
30126 
30154 
30181 

30209 

30237 
30265 
30292 
30320 
30348 

30376 

30403 
30431 
30459 
30486 

30514 

30542 
30569 
30597 
30625 

30653 
30680 
30708 
30736 
30763 
30791 
30819 
30846 
30874 
30902 
Cosines 



- 72 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 



17 Begr. 



Departures, or Difference of 
Levels 



M t-. H O O M N O 't 00 (N O Q 

66306a66666666 
(MC^OqCMCqCNCOCOCOCOCOCOCO 



C0O"^O-*OC000C0a0cMr^.rH 

HWOCCr^fJOOOHWOOQH 
CO^ipOGOOOrHCOTtllCOOO 



OH(M0moON00OOHH 

OOh(MWt((ioONODOhN 
MiOCDNQOOOHiMCCOON 



OWOQOOiMOOfJON-ifH 
666660HHHHHHH 



<MOO(MOO<M00 01OXr-l 



oooooNooioio-^McqtMH 

HQOUJCTOOOOON^HOOlO 

cpONOOopoOHHqqcpcpri* 



j: 10 o 10 h 

N(MCOCOO000 
Cpt^qOGpOOpprT^rHCviroCp 
i^rHp^rHrHrHCqCqCq)OC|Oqe<l 



iOOOfMNWOOi< 

O O O CO r-H 1 



HMiOOCOCiHCO^ONOO 
N H lO C M N (M O O i< 00 M N 
N(Gpq0O9O9HHHCT(N 

aDdooDQodoob6666666 



NiOM^OO^WONiOCOO 
<* n o o: 13 '/) ^ -t N CI 'M 10 00 

opoOOOOOOOOOHHH 



i< 00 ono o co n h o d (M o o 

Tl CC it StsOQ tN M -tONO 

9 9 r. 9090000000 



11 
IS 



V. t<3 

II 



72 



Latitudes, or Horizontal Dis- 
Beff ' tances for Difference of Levels 



60 



TABLE II. 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 



is^ 



95106 
95097 
95088 
95079 
95070 
95061 

95052 
95042 
95033 
95024 
95015 

95006 
94997 
949S8 

'94979 
94970 

94961 

9! .952 
9494-1 
9493 J 
94924 

94915 
94906 
94897 
94888 
94878 

94869 
94860 
94851 
94842 
94832 

94823 
94814 
94805 

94795 
94786 

94777 
94763 
94758 
94749 
94740 

94730 

'947" 

94712 
94702 
94693 

94684 
94674 
94665 
94656 
94646 

946 l 7 
94627 
94618 



94599 

"99 
94580 

94571 
9,561 

94552 

Sines 



0*71 



Departures, or 
Diti'. v ;-iee of Levels 





10 _ Latitudes, or Horizontal Dis- 
AO s ' tances for Difference of Levels 






"0 w-10 00 >oO w-10 >0 O oO 
vo >o vo^- 'j- to to r) m m 




Ij 

Sr so 

cs a 




> 







O O --i l^ (N N CO 00 Ti Ci -^ Ci 10 
HOOCJOOOaONNOOOip 

b * -* rfi -^ -<* tjh ^ <* 4h -^ 

CiCiCiOiCiCiCiGiCiCiCiCiCi 


O 
O 




ft 





Eh 

r < 
g 


K 

D 

X 

H 
P 




0. 


lO I CO CO r lOCiC^COrt<rH05l>. 

OkOrHNCOC5"*OOWOOCOC5 
O O O f Tj CO CO N CT H H O 

kg ib b 10 10 ib ib ib ib ib ib 
oowooooooooooooooooooodoo 


O 






00 


iCOCMQCTiOC5<M' ! fNC5Cq 
OD ^ 1-1 l^ O O O CM O 10 H N Tji 
pooppcscpcpt^r^^pp 
cbcooibibiooibibibibibib 
w t^ t^ t- t^ t^ t^ b- 1^ t- 1^ t^ t^ 




00 







i*COOOMC(MOQOiO(MOO 
N rj* H N * pi O H 00 O H 00 
ip lO lO "* ""* T* CO 00 CO CM CM CM rH 

'0066660660666 
0000000000000 





1 

ft 

O 


O 

NO 


'tNCiiN^NOOl^cDOOOJH 

oc3oqoC(mc;n-<*h(X)oco 
pppOiCiCiQOcpqoqpt^l^t- 
b-t'--t>.0000000000 
lOiOiOiOiOiQic^iOiOiOiOOiO 




VO 


P3 


O 


KONiotMoonooMoo 

iOCOOOOO:OHONi<(MG5N 

ipipip^^^^cscpcpcpcMCM 

b- l>- t^. t> b~ t^ l> 1>- b- t> l>- 1>- t> 


O 


P4 
1 1 

P 

O 


<1 

H 

O 
N 

H 





(Nt)*OC0OHC0-)ION00OH 
^(MOOOOOCOHCJNiO^N 

ppppcicippcccpopooqp 
cocococococococQcococococo 


O 


of 

P 
H 


w 


w 
*** 

O 

DQ 

Q 
9 




CO 


(NCO^HNWOOiMX^OO 
COHOQNOiOWMOOOOO 
ip ip O -* -* -fT tH "tJH ^ Tf O CO CO 

cobobdocb6ocbcbaoa)6o6oob 

5 Ol CM CM CM CM (M CM CM CM CM CM CM 


O 
CO 


03 
P. 




O 


ricqco^iOOONOOOO^OO 
oi ri 00 n o -t ?: oq oq h 

CiGzCiccoooDaooDocccccooao 







H 

< 
h3 


HOHN(M00Q0"*O5Oi0 
HOOQOQOOOSNOCOiO 
ip ip ip tJ< -f -^ << rti tH -^ rti r|H -* 

PoPoPPPOJpPPCiCi 


O 






-3 , v 

"i! 1 O lr >O v oO l ^O l oO l oO l ^iO 

81* 

5 S 00 

3^ 1 








71 


_ Departures, or Differe 
L Be ^ Levels 


uce < 


rf 



TABLE II, 



51 



Departures, or 
Difference of Levela 



i8o / 
i 

2 

3 
4 
5 
6 
7 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 



1 ft IDe Departures, or Difference of 

AO *" Levels 



v~> O ^ O o o 



o O w-> O o O 



O f l^ h iO Oi 00 O O ^ 00 h o 

6 rH rH rH rH -^ rH rH CM CM C^ <M <M 

cococococococococoo'scocooo 



HOOO^MNH'OQCONH 
H '.O O 00 O CO O 00 O ^UO N O 
&pCiOrHCp^JilOiX>Qp050rHCO 

^i^cocbcbobcbobobobocbo 

CMCMCMCMCMCMCMCMCMCMCM<MCM 



t-H CM CC 0? -H H/i -H JO >C JO lO lO 

>o o n oo o h (jq co 



cq 



un '- .) r uj 'ij r* uu g; u M un pj "t> 
NCpOOH^CO'tONCCCJO 

-r 1 -h -+ o o ib ib o ib ib >b o so 

CM CM CM CM CM C M CM CM CM CM CM CM CM 



HOOOHOOOHOOilHNCOO 
CO l>. 00 05 O rH CM CO ^Ji lO O CO t^ 
r^rHrHr^tMCMCMCMCM^CMiOMCM 

cmcmcmcmcmcmcmcmcmcmcmcmcm 



H^NOC0iO00H^Q(M-il 
^fNOONLO^NOOO'COn 
OONNOOOOHCMMCOri*iO 

cbcobcbobobdociGiCiciicfiOo 



HOO00NOO-*f0HO00 



O 'O io o o o O O ffl CO 



H O H 3 Ol N (M N CT 00 ?: 00 W 
O -I t>. CM 'JO CO C5 T O O H CO CM 
^ Td O Q CD O N 00 CO a 05 o 
CMCMCMC^1(MCMCMCMCMCMCMCMC0 



0(M000000(MCOt)(ON 
fc>. r I lO C CO t~- rH TO O t^ GO CM CO 

CM 00 00 CO -* Tfi <p O Cp 9 CO N N 
o66CiOOOOCiQOCJO 



OCOOCOHCCO-fHOOiH 
OOOCOOQ-i'tNO'NiOOOH 
rH CM CM CM CM Op CO CO -H t* -*i -* ip 



o Ttno 0>1 iO C :0 N h -ff 00 (M o 
O O < SO -j< uj N 00 O H ?i -t O 

o h h h -h -1 rn .- (M qq cq a 
coobwcbooobcbwcococoboob 



vr> o l oO "^ O u-i O ^ O o O 
11 1-1 N N c*i co sj- *$- io w-)\o 



71 



Latitudes, or Horizontal Dis- 
es * tances for Difference of Levels 



62 



TABLE II. 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 



19 o' 



Cosines 

'94552 
94542 

"945 J 3 
94523 
945H 
94504 

94495 
94485 
94476 
94466 
94457 

94447 
94438 
94428 
94418 
94409 

94399 
94390 
94380 
943JO 
94361 

94351 
9+342 
94332 
94322 
94313 

94303 
94293 
94284 
94274 
04264 

94254 
94245 
94235 
94225 
94215 
94206 
94196 
94186 
94176 
94167 

94157 
94147 
94137 
94127 
941 18 

94108 
94098 
94088 
94078 
94068 

94058 
94049 
94039 
94029 
94019 

94009 

93999 
93989 
93979 
93969 
Sines 



9 
8 

I 

5 

4 
3 
2 
I 
0*70 



Departures, or 
Difference of Levels 



19 es. 



Latitudes, or Horizontal Dis- 
tances for Difference of Levels 



voo ^ O ^ O oO *o O >oO 

10 >o ^ ^ tn m r m w 



(MrJHt^OrHCO^iOl^aoaO 

iOO"OOOHOHCOHOHO 

OOC3QCiOQOO05OO 



OOOOOOOCONNNOOiO 



3 



aococoaocoaoaoaoooaoaocoao 



ff)CDNQOH(M^-fT)tioiO 
^OOCTQO>OHNC?OiOHb. 



OnOOC5i3ON00W00 
QOOWOOOHCOIOHQO^HN 
HH^OOOOOOcpopOON 

6 6 6 6 6 6 ib 10 >b >b >b b ib 
ooooooooooococo 



NNOCpOOipipip^^-iiq: 

6 6 6 6 6 

iOiOOiOQ 



lOiOiOiOOOOiO 



<E>qaO"fo<Mt^coo^o-<tf 

MOiMOODCMOOOOKO* 

CTWCT^HHHHOOOOO 



H5<)CO-|<^iOOONNNQOQO 
QOOONNNNNCDCOOOOiO 



OHNcoa)"fO"t*oooo-i 

O W (M O O N O C W (M O C5 
CO CO CO CO CO (M CM C-l Ol (N <^1 <M rH 



HOOOONCiOi^OlHOQ 
OC^'QOqOQpOpCpOOaOQOQOGOt^ 

6d6oco6occx)6dcc6c:cccoccoo 






OOChOhOHN(MN(NN 
lO -0 -* -+ CO CO <M <M 11 . O O 
^i-f^^^^-^^-^^^^CO 
00Ci0 



70 



Beg. 



Departures, or Difference of 
Levels 



TABLE II. 



Departures, or 
Difference of Levels 



1 9 o' 
i 

2 

3 
4 
5 
6 
7 
8 
9 
io 



14 
IS 

16 
17 
1 8 
19 

2.0 

21 
22 
25 

*4 
*5 

26 

27 

28 

29 

30 

3i 

32 
3 3 
34 
35 
36 
37 
J 8 
39 
40 

4i 
42 
43 
44 

45 

47 
4^ 
49 
50 

5i 

52 
53 
54 
55 
56 
57 
5* 

s 



Sines 

3^557 
32584 
32612 

32639 

32667 
32694 

32722 
32749 

32777 

32804 

32832 

32859 
32887 
32914 
32942 
32969 

32996 
33024 
33051 
33079 
33106 

33134 
33161 
33189 
33216 
33243 
33271 
33298 
33326 
33353 
3338I 
33408 

33435 
33463 
33490 
33518 

33545 

33573 
33600 
33627 
33655 
33682 
33709 
"33737 
33764 

3379 2 
33819 
33846 

33874 
33901 
33928 

33956 
33983 
3401 1 
34038 
34065 

34093 
34120 

34147 
34175 
34202 

Cosines 



4 
3 
2 
I 
0*70 



Latitudes, or Hori- 
zontal Distances for , 
Difference of Levels I 



19 e*. 



Departures, or Difference of 
Levels 



10O o O w-10 >oO 
u-> u-> -^ <$- to m N N 



t^^<MCSOC0i-HG0i0<M00i0 33 

lOOMCOOiDHiOOlOO 
iOOOOOH^WpONCi9^ 

in <m c*! cm eo 5 b cb 3 3 V3U 3N 

cococococococooocococococo 



HiOQO(NOC5COOO(MOaC3 
OOmNOHitOQOHCOOOO 

66606366666666 



lOiOiOiOiOiO-^^-tlWCOiMiM 

OH<NWfU5NqDQ9HNM 

6 6 6 6 6 6 6 6 6 n n n n 

CT (N W a (N (M CT CM (M (M N (N (M 



OOfMOO^OCOfNOOTjOOH 
OOOQONNNOiOiO3^^ 
NOOOOHCTOO^OONqDO 



c?^rooc^(MHONioo:(M 

lpOCNOOOOHHiMWTfip 

6666666666666 

HHHHHr-((M(M(NN(M(M(N 



N -t r- 00 lO (M C O (M C5 O M O 
(MM^^iipOONqOCOQOH 

OOCCOCOOCCCNN 



(MNWQC^SOOOHNCMQO 

66666666666600 



NQOOHiMCO^OONQOOH 
N&OOOOOCOOOOHHWCT 

6666666666666 



HOO-tHOOHC0OWQ 
6666666666660 



ol 35 c* * op op op 55 op op op -ft t? 

66666666cocooococo 



"b *oo o o o o >oo >jo o 



70 



Latitudes, or Horizontal Dis- 
Degr ' tances for Difference of Levels 



64 



TABLE II. 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 


CO 

P 

> 



H 



tf 
H 
E 


P 

8 

qq 

W 
O 

H 
CO 

t 1 

ft 

i 

s 



w 



co 

P 
P 

H 

>i 
H 

< 


rt/\ _ Latitudes, or Horizontal Dis- 
U e&< tances for Difference of Levels 


20C/ 

i 

2 

3 
4 
5 
6 

7 
8 

9 

IO 

II 

12 

13 
14 
15 
16 

7 
18 

19 

20 

21 

22 

23 
24 

25 

26 

27 

28 

2; 

33 

3' 
3i 
33 
34 
35 

36 

37 
38 
39 
40 

4i 

42 

43 
44 
45 

46 

47 
48 
49 

5 

5i 
52 
53 
54 
55 

56 
57 
58 
59 
60 


Cosines 

93969 
'93959 
93949 
93939 
93929 
93919 

93909 
93899 
93889 

93879 
93869 

93859 
93849 
93839 
93829 
93819 

93809 
93799 
93789 
93779 
93769 

93759 
93748 
93738 
93728 
93718 
93708 
93698 
93688 
93677 
93667 

93657 
;936+7 

93626 
93616 

93606 
93596 
93585 
"93575 
93565 

93555 
93544 
93534 
935^4 
93513 

93503 
93493 
93483 
93472 
93462 

"9345* 
93441 
93431 
93420 
93410 

93400 
9?389 
93379 
73368 
93358 


60' 
59 
58 

% 

55 

54 
S3 
52 
5i 
50 

49 
48 

46 

45 

44 
43 
42 
4i 
40, 

39 

U 

35 

34 
33 
32 
3i 
30 

29 
28 

11 

25 

24 
23 
22 
21 

20 

II 
\l 

15 

14 
13 
12 
11 

10 

9 

8 

i 

5 

4 
3 

2 

0*69 




O >j->0 >oO 100 oO oo o O 

NO whot)- ^ W M N rJ m w 



ON 
NO 


|1| 

if 


CO 

"H- 
Ph 




SB 

&H 

B 

p 



aT 

1 

p 






OOQOfflQONOWWCTOO) 

O r-H O r-i O i-H O 1 1 O rH O rH I 

cb cb cb cb 6 cb cb 00 cb cb cb cb cb 

C3QC50iC3C5QOC5CiC5O 


O 


O 

ON 




ON 


NN(MN(MOO"*00(MOC5(M 

MM 00 OS T)l O O O O r-H Cp CM 

I O -H/i *# CO CO CO (N(MHH09 
'^ ^H -^rf -^-H '-+< -^H "V< H --H 1< H --H -^H 

XXXXXXXXXXXXX 


O 

00 


IO lO IO IO IO i* -* po (M O O 00 O 

n w c; h n r: ci 10 'h n ^i x 

H m O O O Ci O GO 00 GO N N O 
t>. !>. t^ t>- t>- b- l~- b- I>i b- t>. l>. l>- 


O 
OO 





oocooocooo^ot^ iioownh 

t -* b~ CO O CD CO O? tO CM TO O 

b- b- t> 5 -+ ^ - co op 
b to 1.0 iq o b b b 6 >b b b 

ooooooooooo 


O 




no 


HHHHHHCOOOONOlO 

00O:iOO CO O N O t h H 

CO Cp CO CM S I CM Ol 1 1 t rH O O 

6666636660666 


O 





"* -M -* G5 CO 00 CM 1 
00 10 CO * o CO O X O CO O '0 
999 00 x x x is t^. t^ i - 

6660666666660 


O 
10 





X 00 X X X b- r- O O 10 O -H CO 
X O ~t< Ol O X O "* CM O X O -H 

b~t^b-b-b-b~b-i^b-b~b~t^t^ 

cococococococococococococo 


5- 

O 
CO 




to 


HOHOHIOOLOO^O^N 

ot^o^co 10x0 cocqo 

rH rH rH rH rH rH rH O 

X X X X X X X X X X X X X 
CM CM CM CM CM CM CM ON CM CM CM CM CM 





^t^-H-H-H^'HCCjCCCOCOCMCMCM 

CQ0NOiOi<ni(NHOCiXN 

t> t> b- l- t^ b~ b- b- b~ t- 

X X X X X X X X X X X X X 








N(MNCMN(NN(MOHOHO 

O X X l^ l^- O O to -t -* CO 

cp co cp cp cp cp cp cc cp cp co ep 

66 6 66666666 6 6 


O 


12 * i <* 

8 J o 




Sines 


1 


-^^ "n,.-^.-.*-,-,,., i^tf" , 


,. 


Departures, or 
Difference of Levels 


6S 


!><e- ^=F auUl ^ Ui silicic. 

' Deff * Levels 















TABLE II. 




65 


Departures, or 
Difference of Levels 


QQ 

!> 
W 

O 

w 



1 

P 

O 

w 
H 



P 


OA jj e _ Departures, or Difference of 
&" Levels 


200' 
I 

z 
3 
4 
5 
6 
7 
8 
9 

IO 

ii 

12 

13 

14 
15 
16 
17 
18 
9 

20 

21 

22 
*3 

24 

25 
26 

27 

28 

29 
30 

3* 

3* 
33 

34 
35 
36 

37 
38 
39 
40 

4i 

42 
43 
44 
45 

46 

47 
48 

49 
50 

5i 
52 
53 

54 
55 

56 

57 
5^ 

g 


Sines 
34202 
34229 
34256 
34284 
343" 
34339 
34366 
'34393 
34421 
34448 
"34475 
34502 
3453o 
34557 
34584 
34612 

34639 
34666 

34694 
34721 
34748 

'34775 
34803 
34830 
34857 
34884 
34912 

34939 
34966 

34993 
35021 

35048 
35075 
35102 
35130 
35157 

35184 
35211 
35239 
35Z&6 
35293 
35320 
35347 
35375 
35402 

35429 
35456 
35483 
355" 
35538 
35565 

35592 
35619 
35647 
35674 

35701 

35728 
35755 
35702 
35810 
35837 
Cosines 


6V 
59 
58 

? 

55 

54 
53 
52 
5i 
50 

49 
48 

46 
45 

44 
43 
42 
4i 

40 

39 
38 

11 

35 

34 
33 

32 
3i 

30 

29 

28 

26 

25 

24 
23 
22 
21 
20 

19 

18 

\l 

J 5 

13 
12 
11 

10 

9 
8 

I 

5 

4 
3 
2 
1 
o*6g 




O 00 o O 100 o O >oO 100 

no >o>o + ^wwt) M M M 

O 

ON 

NO 


u 

Is 


OQ 

P 
P 
> 

Ph 
O 

A 

O 

3 
P 

P 
P 
1 1 

p 


P 

to 

P 
O 

H 
W 

3 

H 

fe 

O 

3 

O 

HH 
HH 

M 



of 
W 

P 

E 

H 

t ( 

% 

P 






(N055(NQ0i'HS05OU3HN 

CM CO Tj< p b. GO O r^l CM "* lO b- GO 

-* -^ ** ** -* -^ b 10 10 ib 

cocococooocococooocooooooo 






(mio-xiomcoh^oohj: 
00o(moncjh-)<oq0o0o 

O I> p rH CM CO Ip p b- GO O r^H CM 

otcocococococococococoooco 




ON 




00 


ONQOQOdOHWM-tiiOOO 

WTt<ippb-pprH(yiCpTt<ipp 

b-b-b-b-b~b-cbcbcbcoGbaDao 

CMCMCMCMCMCMCMCMCMCMCMCMCM 


O 
00 





HNMOCtQ^OLOOOHO 
^MWiMlMHHHOOQCiOO 
C5OH(MMtHi0NQ000OO 

cb^-^^^^^'^-^-i^'^ib 

CMCMCMCMCMCMCMCMCMCMCMCMCM 


O 




NO 


rHOOlOb-COi ICM'+Ob-Ci'-'CM 

(moooo-cchcmocoimo 

ipcpONOOCOOH^iOp^jp 

6 6 6 6 6 P rH rH rH rH rH rH 

CMCMCMCMCMCMCMCMCMCMCMCMCM 


O 
NO 





HCJQOOTHiMOOOO'itiNOCO 

O O 05 O 1^ *r H N "^ H OO IO rH 
J>rH rH CM CO 00 "+ p IO b. b- GO 
' b- b- b- b- b- b- b. b- b- b- b- b- b. 


O 


i 


t 1 IO O O O <+ X CO b- CM O IO 

CO C2 "H O O i-h b CM GO CO 

fp n n co pojoohhwwo: 
'cbcbcbcbobcbH^PPP-r*H/iH/i 


O 




to 


H(M(M5;-i(ioONXOOOH 
O -+ GO 0-1 OO^M CM COHO 
CM CO CO CO -ft -* O iO O O N N 
0666666666666 


O 
CO 





OCOiOWOS-flHQO^OS 
t C r. 'M O N O O H rti O 

aj-iOGO^QooooOHHrt 
666666t>bi>bbbb 








CM CO ** t> GO O 1 CM ^ IO b- 00 

H/i t$ -7^ -t -* -* ip ip ip ip ip ip ip 

obcbcbcbcbcbobcbcbcbobcbcb 


O 


II 


"0 o o ^0 w-io <oo -o 

_, M cj n m to ^r ^ >o wi\o 

O 
M 






Latit 
SEonta 

Differ 


udes, or Hori- 
Distances for 
enee of Levels 1 


61 


J Latitudes, or Horizon 
/ e6 '* tances for Difference oj 


tall 
f Le 


)is- 
\rels 



66 








TABLE II. 






Latitudes, or Hori- 
zontal Distances for j 
Difference of Levels 


W 
> 

a 

ft 





@ 
E 

& 
p 


ph 

m 
O 

H 

m 

P 

O 
S3 

1 1 

O 

w 


of 

Q 
p 

H 

1 ( 
H 

i-4 


01 i> Latitudes, or Horizontal Dis- 
tQL e &' tances for Difference of Levels 


21 o' 
i 

2 

3 

4 
5 
6 

7 
8 

9 

IO 

ii 

12 
J 

14 
15 
16 

*7 

18 

19 

20 

21 

22 

23 

24 

25 
26 

27 

28 

29 

30 

31 
32 

33 
34 
35 
36 
37 
3J5 
39 
40 

41 
42 
43 
44 
45 
46 

47 
48 

49 

So 

5i 

52 
53 
54 
55 
56 
57 
58 

60 


Cosines 
93358 
"93347 
93337 
93327 
93316 
93306 

93295 
93285 
93274 
93264 
93253 

93243 
93232 
93222 
9321 1 
93201 

93190 
93180 
93169 
93158 
93148 

93137 
93127 
93 1 16 
93106 
93095 

93084 
93074 
93063 
93052 
93042 

93031 
93020 
93010 

92999 
92988 

92978 
92967 
92956 
92945 
92935 

92924 
92913 
92902 
92892 
92881 

92870 
92859 
92849 
92838 
92827 

92816 
92805 
92794 
92784 
92773 
92762 
92751 
92740 

92729 
92718 

Sines 


60' 
59 
58 

11 

55 

54 
53 
52 
5i 

50 

49 

48 

46 

45 

44 
43 
42 

4i 
40 

39 
38 

36 
35 

34 
33 
32 
31 
3 

29 
28 

11 

25 

24 
23 

22 
21 
20 

19 
18 

\l 

15 

12 
10 

9 
8 

I 

5 

4 
3 
2 

o-68 




O "NO "NO O "NO "NO "NO 

VO "OlO^^" MtOH tS M M 

O 

OO 
VO 


ii 

Eg Eb 

a 5 


P 

O 
O 
S 

A 

O 
of 

a 

i 





M 


OOOWHOOIOIMOOWHNCOCO 

lOOiaO^O-^QOCCOOfMNH 
WWWCqHOOOQQpcpNN 






O 

ON 


cqioooHejiooooHco^coo 

(Mt^<MGOC0G0CO00^HO5^C5^ 
QOQOOOOOOOOOOOOOGOOOOOOOOO 




ON 


O 

00 


coiocqrHooco^oop^ocqoo^ 

QO^OOHNMO^OOHN 


O 
00 





lOHN'^OOC'OiOHN'iO 
^W(^G^q<lrHi7HpcppCiC5Ci 







VO 


H CO iO (M 00 iO Ol O CT OJ CO M 
OOOOGOGpcONNNOOO 

crbibobbbibibibb>o>bib 





O 
"N 


OMOO^NH^NOMOOi 
COiO(MONT)*(MOO"tHOOiO 

ppppopo^^^^opoo 

oo66o66cb6666 





O 


COfMHOOOOMO^NHCJN 
T(iiqOOOiOWHC3NLO?3000 
W9eOWWN(? ; lHHHHHO 

oococococococococooscococo 


I 


O 

CN 


O N O -* Ol H O * W H 

pcppppppopGpcpcpqpqp 


O 





I CqHHOOOQOOONOOiO^ 
NOO^WHOOOONOLOrtl 

obobcbcbcbdbcc(cca)cbdb 


O 





OHOOiOQ^OC5QOWN(M 
MW^KMHOOOOOOCONN 


O 


"8 a 

11 

1" 


"O "NO "NO "NO "NO "NO "NO 
IH M M t* M W^'nT <0 "NVO 






Tk TVtt 1 




Departures, or 
Difference of Levels 


6 




nee 


UI 



TABLE II. 



W 



Dfl 


partures 


or 


Difference of Levels 




Sines 




11 o' 


35837 


60' 


I 


3S864 


59 


% 


35891 


58 


3 


35918 


S l 


4 


35945 


56 


5 


35972 


55 


6 


36000 


54 


7 


36027 


53 


8 


36054 


52 


9 


36081 


5i 


IO 


36108 


5o 


ii 


36135 


49 


12 


36162 


48 


J 


36190 


4 7 


M 


36217 


46 


15 


36244 


45 


16 


36271 


44 


17 


36298 


43 


18 


36325 


42 


19 


36352 


4i 


20 


36379 


40 


21 


36406 


39 


22 


36433 


38 


23 


36461 


37 


24 


36488 


36 


25 


36515 


35 


26 


36542 


34 


27 


36569 


33 


28 


36596 


32 


29 


36623 


3i 


30 


36650 


30 


31 


36677 


29 


32 


36704 


28 


33 


36731 


27 


34 


36758 


26 


35 


36785 


25 


36 


36812 


24 


37 


36839 


23 


38 


36866 


22 


39 


36894 . 


.21 


40 


36921 


20 ' 


41 


36948 


19 


42 


36975 


18 


43 


37002 


l l 


44 


37029 


l6 


45 


37056 


15 


46 


37083 


14 


47 


37110 


1.3 


48 


37137 


12 


49 


37*64 


11 


50 


37191 


10 


5i 


37218 


9 


52 


37245 


8 


53 


37272 


7 


54 


37299 


6 


55 


37326 


5 


56 


37353 


4 


57 


37380 


3 


5 


37407 


2 


59 


37434 


1 


60 


37461 
Cosines 


o-68 


Latit 


udes, or Hori- 


zonta 


1 Distances for 


Diffei 


ence of I 


revels 



ft"! Departures, or Difference of 

Zl Be * Levels 



3 J 



O w-io "lO u->0 oO 
ioiotJ-^mwO tf 



-o O O 



NOlOOIOiOOLOHOHOO 
CO t^ O "*l^ r-uo 00 <N 'OOCTffi 

(BOHNCOiOONOOHM^ 

cococococococococococococo 



IONCH-JCCOO 

^cp-^cpb-qocirTHC^cp-^iot^ 
(>i cq ch <?q cq oi 6\ cb cb cb cb cb cb 

cococococococococococococo 



OQOMOMCTOXOiOMOQO 
ONCOOOH(M^io:-+ioOO 
Cpt^GpOSrHCNCp^lOCDt^OOOS 

(X)(i)d)(666666666 



OHOHiOOi-OO^OCOQO(M 

9hnwtj*9 9N(qoh(n 
ib*bob*b>bibxbibbcbcbcb 



oooo^ciooNor.HON 

ipOCpt^GOOCpprH^cpcp-^l 
rHrHrHrHrHrHrH'fl'fq^OqCqcq 



QOOT)f(MONiOOOQOOMO 
H 00 D (M CI O CM 35 0-1 OS CD CO 
OgSOr-lrHGNCOCp^ipipCDt*- 

^t^GbaDGbcbobabcbabcbabcb 



LOOMNIMOO^X'MOOtP 
COOO^ClOOOri-O^NMQO 



10 O N H O O M N H U5 o m 

NNcpcoaqioooHHHCN 

OOOOOOOrHr^rHrHrHrH 



NM<CTCiOONtj(HQ0>O(M 



t>t-b-l>J>t^t-~b-t^t^l>t>t^ 



>* b~ 1 1 * 00 1 1 



O GO GN CD OS CO CO 

COOS' 1 (M OO LO O N O O r- I CO -<tf 



1-0 p CD CD CD CD CD CD CD t^ t- t>- t>. 

cbcbcbcbcbcbcbcbcbcbcbcbcb 



68 



Latitudes, or Horizontal Dis- 
" tances for Difference of Levels 



68 



TABLE II. 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 



22 o' 

I 



Cosines 
92718 
92707 
92697 
92686 

' 92 fe 5 
92664 

92653 
92642 
92631 
92620 
92609 

92598 
92587 
92576 
92565 
9*554 

92543 
92532 
92521 
92510 
92499 

92488 

92466 
9*455 
"9 2 443 
92432 
92421 
92410 

9-399 
92388 

92377 
92366 

92354 
92343 
92332 
92321 
92310 
92299 
92287 
92276 

92265 
92254 
92243 
92231 
92220 

92209 
92198 
92186 
92175 
92164 

92152 
92141 
92130 
921 18 
92107 

92096 
92085 
92073 
92062 
92050 
Sines 



0-67 



Departures, or 
Difference of Levels 



22 *. 



Latitudes, or Horizontal Dis- 
tances for Difference of Levels 



I J 



O *o O 00 *00 o O >oO vr>o 



X^CS^OCOQOiMOO^NO 
HOOiOO^XXNIMOOiO 

t>9ipT)i^c;c:(N!MHHO 
^ ^i ii ^1 (^ <?q cq c?q <jq <?q <?q cq cq 

C5 C O Q Q Ci 05 CS C5 O Oi O) 



<~20COC:CSOOOSCOaOOOOiO 

-^opcC^^rHrrHppcpCiGpqp 

oooooooooooooococoooooooo 



^HNMO-^OiOHOHOO 
N0000'*C5lO-iCC'lNWXT)i 

t^t^bb-b~bi>.i>i>.t>.x>.b-i>. 



M tO O 00 CJ O WW r *f 10 10 >0 
OCO(MQO^HN05iOHSW 
O50pqpb-b-t^0^0i0prti"^ 

COCOOCDOOCOOCDOCOOO 



Oip90'r|('^Tl*wepW<N(N!N 

10 10 o 10 b ib b b ib o ib ib 

lOiOiOOiCiOiOiOiOiOOiOiO 



O(N^NCiTttO00O(MWiO 
0ON"f(NC5OWH000(N 
WMWINfflCTHHriHpOO 

<pcboo:b:bcbcbcoo<x>cb 

TJi ^^ ^7^ ^1 Tji tji '^i ^p ^^ T^ "^i "^H ^^ 



N N N N N O C C3 O O CO 

cooococococococococococcco 



5acOOOMCOOWOO(M5 
HNOOOIOTOHOQOO^MH 
Gpt>b-b-i>-i^b,t^cppppcp 

c^^c^c^c>qcqcrqc<i<?qc^c<icqc<i 



^JJ CO CM 



'QOOCDOtHWHO 



rnv*NCOiO^M(Mn 

ipipiOlOip^^tlT^'^^Tt*'*'^ 

cboocbcocbcbcccbaocaodo 



ioo^oooinoH>o 
. 10 10 ~t ?? cc 01 oq h h o 



67 



3>egr. 



Departures, or Difference of 
Levels 



TABLE II. 



69 



Departures, or 

Difference of Levels 



Sines 

1746i 
37488 
37SI5 

37542 
37568 
37595 
37622 

37649 
37676 

3773 
37730 

37757 
37784 
37811 
37838 
37865 
37892 
37919 
37946 
37972 
"37999 
38026 
38053 
38080 
38107 
38134 
38161 
38188 
38215 
38241 
38268 

38295 
38322 
38349 
38376 
38403 
38429 
38456 
38483 
38510 
38537 
38564 
38591 
38617 
38644 
3867! 



38725 
38752 
38778 
38805 

38832 
38859 
38886 
38912 
38939 
38966 
38993 
39019 
39046 
39073 
Cosines 



1 

0*67 



Latitudes, or Hori- 
zontal Distances for 
Di (Terence of Levels 



3 
I 

O 
o 

1 

I 

c 



22 



I>eg-. 



Departures, or Difference of 
Levels 



Ci 



c c: w w a ?: o o t- o H t-. 
fi o n 00 9 H (>) f o o O) s; p 
i^ 1^ t> r^- t^ 00 do 00 to 00 to cb ch> 

cooocooococooooococoroooco 



lOONQOOOHtMM'fOiOO 
H M O N ^ 'M -t O TO O O) -t C 
N CO G 9 H M tJ ip p X) G O H 

M M M ~ "* --t 1 -h "* -f T* "-f >0 Ifi 

oooococoaooococococooocooo 



OCO'^NOMONON'fHa) 
CNQ0OOOHi?1(NMt)i^O 
GOHIM^iOONCOOOHCM 



(NNHiOO^COIMOO'f NH 
(M h h O O O 00 CO N N O IO O 
G^OO^iOpcpi^cppprHC-lcp 



ONQ0OOOH(M(MC0Mi 
NiOMHOOOO^iMOCCO^ 
^lOCpb-Gpcp05prHG>lC>10t'^ 

cf i ci cn cf 1 d^ cn dq do do do M do do 

<^4<N<^<^ClCNCN<?qCNC^C>1C^CN 



USNON 

wON 
NNCp9 99H(NCNC0'*^ip 



^CO<NCOO^b-'-liOCO'7qOOi 

CO M G ^ O tO O O h O (M N C- 1 
QOOHCT(MCpcpT)<'^iCip9 

4h o *q 10 ib ib 10 10 10 ib >b ib ib 



OOOOOOOOH^HHC'lN 
NHiOO^CO(MOO"*OOCN 
CI M 'i' "i* ^ iO ! O O C t> 



t>|>t^.l>.l>.l>t>l>t>i>.t>t^t> 



555N00OH0HI5OXOO 

^j^t^t^oocooocpcpcpcpcpcp 
dododododododododododododo 






67 



Latitudes, or Horizontal Dis- 
1>eer * tances for Difference of Levels 



70 








TABLE II. 






Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 


LATITUDES, OR HORIZONTAL DISTANCES FOR DIFFERENCE OF LEVELS 


QO Beff Latitudes, or Horizontal Dis- 
^O *' tances for Difference of Levels 


23 0' 
1 
2 
3 
4 
5 
6 

7 
8 

9 

10 

11 

12 
13 
14 
15 
16 

17 
18 

*9 

20 

21 

22 
2.3 
24 
25 
26 
27 
28 
29 
30 

3i 

32 
33 
34 
35 
36 
37 
38 
39 
40 

4i 
42 
43 
44 
45 
46 

47 
48 

49 

50 

5i 

52. 
53 
54 

55 
56 

57 
58 

s 


Cosines 
92050 
92039 
92028 
92016 
92005 
91994 
91982 
91971 
91959 
91948 
91936 

91925 
91913 
91902 
91 891 
91879 

91868 
91856 
91845 
91833 
91822 

91810 
91799 
91787 
91775 
91764 

91752 
91 741 
91729 
91718 
91706 

91694 
91683 
9,671 
91660 
91648 

91636 
91625 
91613 
91601 
91590 

' 915 ll 
91566 

"9*554 

91543 

9I53I 

91519 

91508 

91496 

91484 

91472 

91461 
91449 

9H37 
91425 
91414 

91402 
91390 

' 9Jl7 I 
91366 

'9*355 

Sines 


60' 
59 
58 

u 

55 

54 
53 
52 
5i 
5 

49 
48 

46 

45 

44 
43 
42 
4i 
40 

39 
38 

11 

35 

34 
33 
32 
3i 
30 

29 

28 

26 

25 
24 

23 
22 
21 

20 

*9 
18 

16 
15 

14 
13 
12 
11 
10 

9 
8 

i 

S 

4 
3 

2 
1 
o-66 




O oo 00 >oo >oO ^o voO 
vo vo 10 ^- ^ co co N tf M M 

O 

VO 
VO 


11 


GO 

e 

h? 

O 



1 

1 1 


O 

tzT 

3 
p 

g 

W 
P 






OCOOOtN^OOOOHfN^^ 
O CJ Of l>- (71 OO^CiCONHO 
OOOOOCCNNOipOf fM 

(^rHrHr^r^rHrHrHrHrHrHrHrH 

OOOOOOOOOOOOO 








OS 


Wi*(MHOQOOHCOLOCOO 

c<i cq 6 1 bq <N bq bi cfq bq bq cq bq bq 

OOOOQOGOOOGOGOGOQOOOOOOOOO 









00 


o-^OMooHioannioooHM 
pipipip^-^cpc^cqqqrHrHp 
i>i>-t^i>.i>-t^t^i>t^i>.i>.i>.t^ 




00 





000006060000 






vo 


CO O O (M 35 O (M GO O H 00 r)( H 
(^1^^11000000000000 

ib b 10 ib 10 10 rt< rj< -* -* ^ -^ 

lOiOiOiOiOiOOiOlOiOiOlOiO 




VO 





(MOOMhqoiONOOWON 
OCiOOOCpCOCpNNNNCp 

cbibibibibibibibibibibibib 





5- 


ON^NQCD(MC5O(N05CD(M 
(NOMONOOOOCOHQOOt)! 
ODNNNNNCpipOcpipipip 

006666066666 

cococococococococococococo 


3. 




CO 


O00Ht)<NO(Mt)(NC5(M^O 
piOOipipipiOTtl^^"^-^'* 

cqcqc<i<7q(?qoqoqcq(M(M<?q(M<?q 




CO 





OC1NOtHC5HOQ0CD'^00H 
HOOONOiO^COHOOCOS 

t(obccbcbob<c<aooooo 




M 





lOO^OOWCOHUJQWNHlO 
OOOOOOONNOiOiO^-^M 
C^rHrHr^HrHrHrHrHrHr^HrHrHrH 


O 


If 


HI 11 C< H CO CO ^ *$- W"> ovo 

CO 




6< 


r> ^ Departures, or Differe 
B Be *' Levels 




Departures, or 
Difference of Levels 


nee 


ji 



TABLE II. 



71 



l teparl ores, or 
Difference of Levels 


1 

1 

O 

g 

O 

n 

1 
r 

t 1 
P 

O 
w 

M 

P 
H 

Q 


OQ Dee. departures, or Difference of 
^^ ' Levels 


23 o' 
I 

2 

3 

4 
5 
6 

7 
8 

9 

10 

ii 

12 

13 
14 
5 
16 

17 
18 

*9 

20 

21 

22 

23 

24 

25 
26 
27 
28 
29 
30 

31 
32 
33 
34 
35 
36 
37 
38 
39 
i 40 

4i 
42 
43 
44 
45 
46 

47 
48 

49 

50 

5i 

52 
53 
54 
55 
56 
57 
58 

60 


Sines 

39073 
39100 
39127 
39153 
39180 
39207 

39234 
39260 
39287 
393H 
39341 
39367 
39394 
39421 
39448 
39474 
39501 
39528 
39555 
39581 
39608 

39635 
39661 
39688 
39715 
'3974 1 
39768 
39795 
39821 
39848 
39875 

39902 
39928 
39955 
39982 

40008 

40035 
40062 
40088 
401 15 
40141 

40168 
40195 
40221 
40248 
40275 

40301 
40328 

40354 
40381 
40408 

40434 
40461 
40488 
40514 
40541 

40567 

40594 
40620 
40647 
40674 
Cosines 


6d 
59 
58 

U 

55 

54 
53 
52 
5i 

50 

49 
48 

46 

45 

44 
43 
42 
4i 

40 

39 
38 

36 
35 

34 
33 
32 
3i 

30 

29 
28 

26 

25 

24 
23 
22 
21 
20 

:? 

15 

13 
12 
11 

10 

9 

8 

I 

5 

4 
3 
2 

o-66 




'o o O >00 v/-, 10O *00 100 
vo oo + ^- MMM c M 11 


vo 
vo 




GO 

ft 



O 

W 

Ph 
g 



O 
Ph 

<tt 
H 
O 

< 

(72 

s 

fc 

O 

2 

1 1 

O 

w 
H 
P 

E 

H 

HH 

H 






39-073 
39-207 
39-341 
39-474 
39-608 
39-741 
39-875 
40-008 
40-141 
40-275 
40-408 
40-541 
40-674 








ON 


OOOOtN^OQOOiM^OOOO 
rHCN^Opt^GOprHtMOO^O 

cocococococococococooococo 






00 


O O b- 1>- 00 O O Q r-i <M <M 53 55 

1 Ii Ii lrHrHrHr^-IGN(fqcq(l<^<jq 

cooocococococococococococo 




OO 





rHiSGOCqOCDCqCOOCMlOOOrH 
Cp^ippt>GpCipprH^CO^ 







vo 


^(NOOOOi((MOOOO^(MO 

cocbcbcbcbcbcb^H/iHH^HH^ 

(N(N(M!M(MN^iMN(M(M(Mjq 


O 

VO 





NWON^HNTflHNrfON 
MONCOONCOONMONCO 
ippcpt^cpcpppOrHcqcqcp 

6666066666666 
1 ir-Hr-li lr Ii Ii ICq<?q(M<yqC^C<l 


O 


S- 


OWOOWNOMNOOOO 
(MOOWOO^CJiOOiOHOHO 
Cpcpt^b-OOGpqipprHrHlMCN 

ioibibibibib>o66cb666 





O 
to 


(M cq cm cq cq c?q cq co cq cq cq cq cq 

(MOO^CCMOO^OONOO 
NNcpqDOpQOOOOHHN 
rHrHrHrHrHrHrHCqC?q(fqcq(fqC<| 
1 Ii Ip- IrHi Ii 1 r- Ii 1 H H 1- irHi 1 


O 

c"> 


O 


10 1 1 00 10 cq go *o ci oo *o cq oo o 

HTficouHiNOfMiOdOOW 
QpcpoDcpOCJOOOOOHH 

t>i>t>t^t>t>t>cbobcbobobcb 






O 


t^i 1 "f l>- 1 1 * !>. 1 lT)INr ! "^ b- 

O (N M "^ O N 00 O H !M -t ).? C 
OiOOOOOOOOOOOO 





% 22 

a s 
a 

EH 


"0 "lO *oo *> o ^o >oO o O 

m M ti N ci f<l ^ ^J- n-> ir>vo 


CO 




Latitudes, or Hori- 
zontal Distances for 
Difference of Levels | 


/ /> Latitudes, or Horizontal Dis- 
00 eff * tances for Difference of Levels 



72 



TABLE II. 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 



24^0' 
1 
2 
I 
4 
5 
6 
7 



Cosines 
o^SS 
91343 
91331 
9T319 
91307 
91295 

91283 
91271 
91260 
91248 
91236 

91224 
91212 
91200 
91 1 88 
91 1 76 

91 164 
91 1 52 
91 140 
91 128 
91 1 16 

91 104 
91092 
91080 
91068 
91056 

91044 
91032 
91020 
91008 
90996 

90984 
90972 
90960 
90948 
90936 

90924 
90911 
90899 
90887 
90875 

90863 
90851 
90839 
90826 
90814 

90802 
90790 
90778 
90765 
90753 

90741 
90729 
90717 
90704 
90692 

90680 
90668 
90655 
90643 
90631 
Sines 



0*65 



Departures, or 
Difference of Levels 



24 



Latitudes, or Horizontal Dis- 
s ' tances for Difference of Levels 



O v o O *o O 



C Q N H O C5 W N H C C CO 
c: Oi CT H H O O G OO CO N O CD 



c: c oi 00 *i< o o cq n c: co w 00 

i-H O rH o O IO O + GO cc 1-- cm o 
(Ol ^-1 rH p O 05 CO CC b- t> CD CO IO 

CCCOGOCCaOCOCCCCCCaOCOCOCO 



KOCHWONOOHJI^KJ 

OOcjQO^G^O-tO^OiOO 
c c c: G Cp CC N N n o 9 LC p 
cb cc <fi sq cq cq cq cm cm cq cm cm cm 

b- b- b- b~ b~ b- b- b- b~ b, t> b- t^ 



CO O if! W h C N iO N C N "^ Ol 

3 <M 00-55 Oi o n 51 qo i< 
p p cp cp b- b- p p p p 10 ^ rtt 

CO CO CO CO CO CO CO ^ CO CO CO CO CO 

cocccooocccoo 



NN(NOO"^C0 01OCC(N>CQ0 






b-b-C0COC0a0a0CCI^b~CDCD>O 
N^HOOIOOIQOMON^H 
CO ". pipipiO"^^-^H<cpcpcp 

ib b us i!c >"c b >b ib ic 10 10 b 



(MQO^OOfMOO^OOHNIM 
id O "+ "+ -* -* CO CO CO CO cp m CM 

cbcbcbcbcbcbcbcbcbcbocbcb 
cococococooocococococococo 



OOOHMIONOHCTtIIOOOO 
OCCNCMHGCOO^ Oi'O CO 

Tf op cp cp cp cp cm (Oi cq cm cm cm rH 
b-b-b-b-b-b-b^b^b-b^b-b-b- 
gmcmcmcmcmcmgmcncmgmcmgmgm 



HOMOCOHONIOMHQOO 

b-c-HcocMi<oioob-oiococq 

(T^CMCMCMCMCMrHrHrHrHr^rHrH 

cccccbcbcbcbcbcbcbcccbcbob 



iOO-fOOCTCO^NHlOO 
CQINNHHOOOOOKNOCD 
, 7 H 'T l 'T lrHrHr r ( 'T lc ? <: ? < ? >< ? >< ? < ? 
G5C5C5C5C5G5G5C505G5C505C5 



65 



_ Departures, or Difference of 

Beff - Levels 



TABLE II. 



73 



Departures, or 
Difference of Levels 



Sines 
40674 

40700 
40727 
4075? 
40780 
40806 

408 j j 
40860 
40886 
40913 
40939 

40966 
40992 
41019 
41045 
41072 

41098 
41125 
41151 
4 n 7 8 
41204 

41 2 j 1 
41257 
41284 
41 3 10 
41 J 37 
41363 
41390 
41416 
41443 
41469 

41496 
41522 
41549 
41575 
41602 

41628 
41654 
41 68 1 
41707 
41734 
41760 
41787 
4ii3 
41840 
41866 

41892 
41919 
41945 
41971 
41998 

42024 
42051 
42077 
42104 
42130 

42156 
42183 
42209 
42235 
41262 
Cosines 



0-651 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 



P 



C%A t Departures, or Difference of 

i uegr. Levels 



oo >o O oO <oO k~>0 *oO 
"O^^- + MMN H II l-l 

O 



CT "* CD op 






. 05 CO CO 
b 00 05 1 I 0\ 



OQOHHHHHHHHfflN 



COCDiOiO^WiNHOOOOSO 

cpt^qpcppcNcp^ipcp^C5cp 
cbcbcbcbt^t^i^t^b-t^t^b-cb 

O3COCOC0COCOCOC0C0C0COC0CO 



C5ir-U^COC5iOi ll^COOO^O 

^0QOI>00Q0OOOO 

ipcpt^cpC5cprHCNcp^pt-ao 
oi(^cqc^(f<icbcocbcbcbcbcbcb 
cococococococococococococo 



^ipcpb-qoC5prH(?qcpcp^p 

<CCCcb<d0C565O5(05C5C5C5 



T*Tj<C000C0Cq^rHOO05C0t> 
OQOO^iMOOOO'^NCiNiO 
^^lOCONOOOOOOHHfMc: 






NWOO<MOOOHt>COO)lOH 
WONMOOWOCOWQOCO 
CO^t*"rtllOCOCDI>-000005050rH 

66666666660HH 



8coco05C^ooOi 1 eo co 05 <M 10 
(Mcpcc^^iopcpcpb-t>qpq5 
^o^ocbcbcbcbcbcbcbcbcb 



rHr-tr IrHi IrHrHi li IrHr (r IrH 



10rH00^r-lt^^t<O>C0OCD<M 
C0CO00rH^CDC5<N-^l>.Q<^iC 

rHi-Hi-l(M(M<M(NCpcpcp^Tt<^ 

cbcbcocdbobooccdbobaDaDdo 



NHrftNO^NOMNOWO 
OOOOOCTM^ONCOOHJI 
OOOHHHHHHHWCTW 



"o *00 *o O oO >oO ^ o o o 

M M t) WM + + ^ <0O 



5 ti 

B B 



/j e Latitudes, or Horizontal Dis- 

OO X>e& ' tances for Difference of Levels 



74 



TABLE II. 



Latitudes, or Hori- 
zontal Distances for 




Q K jjg- Latitudes, or Horizontal Dis- 
*w tances for Difference of Levels 


Difference of Levels 






Cosines 






O 10O *oo *-> *oo >oo oO 


S m 





25 o' 


90631 


60' 






"O ^-> vr> ri- ^- co co H w m 


If 




I 


90618 


59 






% 




z 
3 


90606 
90594 


58 

s 7 






VO 










4 
S 


90581 


56 


GQ 




HONIOMHQOCDMOOCO 






90569 


55 


> 






MCO^QONiOOSMNO^N 
Oiptp-^cpepfMHHOOffiOO 








6 

7 
8 


'9557 
90544 
90522 


54 
53 

5* 




OO06666666606 

OOOOOOOOOOOOOOO 








(_1 






. 


9 


90520 


5i 






00(^OOiOCi(MCOOiOH 

ipip^-^cpqqoqHHOOOqo 




1 


IO 


90507 


5 


fe 






















ii 


90495 


49 


O 


ON 


1 IrHrHpHrHrHpHrHrHrHpHOO 


ON 




12 


90483 


48 






oooooOQOoooooooooooooooooo 






I? 

14 
*5 


90470 
90458 
90445 


46 

45 


O 








CO 

1-5 




0>OOiOO>00>OOiOOiOO 
ip^rti039(N(NHHOOQC 




16 

17 
18 


'9433 
90421 
90408 


44 
43 
42 


Ph 


O 

00 




00 ' 


> 


m 




l>.l>.i>.i>t>t^t>t>.t>.t^t^t^t^ 




*9 


90396 


4i 


1 

1 1 

ft 








^ 








20 


90383 


40 




(MOOiOHCOiOHNCOOJ^OiO 
fCpCpcpc^NHHOOOCO 














Ph 


21 


90371 


39 





O 





22 


90358 


38 




t^ 


WWM03MWM(NCi| 
OOOsDOOOOCDOOOO 


r^ 


*3 


90346 


*7 









O 


24 


90333 
90321 


36 









35 


5 




Q0HTtlNOC0U5Q0ONr)iCN 

NiiOOWCJiOHOO-ttQOtN 
00 CO 00 C^ <?q rH-rH rH O O O O O 




26 


90309 
90296 
90284 


34 


QQ 





O 




27 
28 


33 


w 


VO 


^^^^^^^^"^^-rtHOOOO 


v 


32 







lOiOiOiOiOiOiOOKJiOiOiOiO 




29 


90271 


3i 











Ph 


30 


90258 


30 






" 


Ph 




90246 






i0^03(MHOO00COTOHO 
H00i0(MG5O(MOC0C0ONC0 
OINNCTHHHpOOOOQ 




1 1 


31 


29 


H 






p 


3* 


90233 


28 


zn 





O 


" 


33 
34 


90221 

90208 


% 


ii 

P 


o 


ibibibibioibibibibibib^-^ 


o 


Ph- 



35 


90196 


15 


H 

^ 












36 


90183 


24 




cqoooDoooooooooooooo<Mb-c<j 

5(NOMO(MONiOWQfl50 
NINiMHHHHOOOOOffi 




CO 


37 


90171 


23 


H 


3. 


O 


38 


90158 


22 


fe 


00000000000000000000000000 


^- 


39 


90145 


21 


O 






5 


40 
41 


90133 

90120 


20 
19 












OH(MMUJONffiOH(NCOTJ( 




42 


90108 
90095 
90082 


18 




K 




OONiOWHOiNOiKMOQOO 

r r , T lr 7 Hr r ,r r l '?"? > PPP < ?oo 

NNNNNNNNNNNCOO 




**J 


43 

44 


3 


O 

CO 


O 

CO 


Ph 
Ph 1 






G<lG^CMCq<M<M(MCqG^CM<?qcM<N 




P 


45 
46 


90070 
90057 


15 
14 













(NHOOONCOOMNHOOON 




47 


90044 


13 


^ 








48 


90032 


12 


m 










49 


90019 


11 


W 


cJ 


oboDobdbobobobobdbobdbb-t^ 


M 




50 


'90006 


10 


P 

H 










5i 


89994 


9 










52 


'89981 


8 




otib-r-i^oocqcooooi^'-i^oo 






53 
54 


89968 
89956 
89943 


I 




O 


CiOiO-tCOWtMi^mOOQQO 

oppppppppopoo 


O 




55 


5 




666606666660000 






56 

57 


'89930 
89918 


4 
3 












it 


*b "^ * *o *r> O ^O *o O 






58 


89905 


2 




w h d d wm^^- v iovo 






E3 


89892 
89879 

gines 


0*64 




1 









-p. tyo- 


inrtA /^-r 


De 
Diffe 


partures, or 
renoe of Levels 


6 


4 - vvmum, ^sr 


311C0 





TABLE II. 



75 



Departures, or 
Difference of Levels 



25 o' 

I 

2 

3 

4 
5 
6 

7 
8 

9 

io 

ii 

12 
IJ 

14 
15 
16 

7 

18 

*9 

20 



Sines 
'42262 
42288 
42314 
42341 
42367 
42394 
42420 
42446 
42473 
42499 
42525 

42552 
42578 
42604 
42631 
42657 

42683 

42709 
42736 
42762 
42788 

42815 
42841 
42867 
42893 
42920 

42946 
42972 
42999 
43025 
43051 

43077 
43104 
43130 
43156 
43182 

43209 
43235 
43261 
43287 
43313 

4334o 
43366 
43392 
43418 
43444 

43471 
"43497 
43523 
43549 
"43575 
43602 
43628 
43654 
43680 
43706 

'43732 
"43759 
43785 
4381 1 
43837 
Cosines 



6& 
59 
58 

11 

55 

54 
53 
52 
5' 

5 

49 
48 

46 
45 

44 
43 
4Z 

4i 
40 

39 

38 

11 

35 

34 
33 
32 
3i 
3 



1 
0-64 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 



O f\ Deg . Departures, or Difference of 
^^ d Levels 



lOOOIMOOOH^NOW 



CD ~ "I 
cn 55 us 

^ ^1 ^ rjl 



"^r *^^ ^T ^P ^^ "^P ^^ ^T ^^ 



' 00 co co 



COOtsOO(N-^COQOC)HWiO 

cprHqqcpipcpt^opq5rHc^cp^ 
cbdodbcbcbcbcbc6666 
cocootcocococotocococococo 



OiOOOHCDHOHOO 



COOGOOCq^OGOCii-ieO^O 

XNCOffiiO^MtMHHOOQO 
ipspt^qpCiprHCqcp^ipipO 

6666666666666 

Gs|<?q(M(M(?qcOCOCOCOCOCOCOCO 



b- 10 ** Ol 

rH ^ 55 

10000010x010106666 
c<ioqoqcqoi<MOicqoioio)Ojoi 



HNMQO'fOCOHNWOOOOOO 
WOO(M05ffi(MC:5(Na)iOH 

i I il i IHHr- IrHrHrHrHrHrHrH 



ot^ocooooocooooooqo 

OlOHCOHOlMNCTNeOQOW 

csgiOOHHcqcqww^-^io 
66t^t^t^t^t>t^b-b-t>-t^t^ 



OOOOQONOOlOiO^cOMfMH 
NHlOOKNHlOOJnNHO 
ONNNcpopOOOJOOHr- 1 

oq^<^(^<N<^c<joqoqoocbcbcb 



(MC53HQOt)(05DC0010HN 
Ot^OCOOOOr- ICOCDOOr IrJHCO 

6o6oaDao6o6occccao6oao6o6o 



05(NOQ(M500H^NHt(( 
(NCOiONOOHC5 , <tONOO 

cqcqcqoqcqcqcococooooScoco 



151 y 



O ^ O o o 






64 



Begr. 



Latitudes, or Horizontal Dis- 
tances for Difference of Levels 



d 2 



76 








TABLE II. 








Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 


m 


ft 

O 



M 
I 
w 

fi 

g 

a? 
O 

% 

H 

CO 
M 

R 





p 
p 

H 
t 1 
H 

3 


C\n Be Latitudes, or Horizontal Dis- 
wU "' tances for Difference of Levels 




26o' 
i 
z 
3 
4 
5 
6 

7 
8 

9 
to 

11 

12 

J 3 
H 
5 
16 

7 
18 

'9 

20 

21 

22 
23 
24 
*5 
26 

27 
28 
29 
30 

3i 

32 

33 
34 
35 
36 

37 
38 
39 
40 

4i 

42 
43 
44 
45 
46 
47 
48 
49 
5o 

5i 

52 
53 
54 
55 
56 
57 
58 

g 


Cosines 
89879 
89866 
89854 
89841 
89828 
89815 

89803 
89790 
89777 
89764 
89751 

89739 
89726 
89713 
89700 
89687 

89674 
89661 
89649 
89636 
89623 
89610 
89597 
89584 
89571 
89558 

89545 
89532 
89519 
89506 
89493 
89480 
89467 
89454 
89441 
89428 

89415 
89402 
89389 
89376 
89363 
89350 
89337 
89324 
893 1 1 
89298 

89285 
89272 
89259 
89245 
89232 

89219 
89206 
89193 
89180 
89167 

89153 
89140 
89127 
891 14 
89101 
Sines 


60' 
59 
58 

% 

55 

54 
53 
52 
5i 

50 

49 
48 

46 

45 

44 
43 
42 
4i 

40 

39 
38 

11 

35 

34 
33 

32 
3i 
30 

29 
28 

26 
25 

24 
23 
22 
21 
20 

19 
18 

\l 

15 

14 
13 
12 
11 

10 

9 

8 

I 

5 

4 
3 

2 
1 
9 "63 




O <flO vo O vo 10O o >o O 

vo 10 ur, -^J- ^- m m M tf m m ' 

co 


it 

1-3 


CO 

> 

k5 

Pn 
O 

Q 

3 





a? 

& 

H 

(^ 
W 
ft 








G5O^Hb~C000C000C000<MOrH 

NHU5QO(N>CiO(NOQCOOO 
OOCO^OOO^TtlCpC^C^rHrH 

0666666666666 
ooooaooOGOGOaoaoaoooaoaoao 


O 
O 







HMCDQ0HNt)<K5N00OOH 
O00t>HOOi*00(MOO^O 
opqpt^t^cocoio^^cococqi 1 
0066666666666 
00000000000000000000000000 


O 




O 


(MHOOOOiliMO)iOWH 

oooioo^o^caeooowoo 
Oopopt^OOipip"^-^ooo'D(?q 

rHrHrHrHrHi-HrHrHrHrHr^-lrHrH 


O 

00 




O 


3OOHOh>0Otj(QiMOh 
HNtNQOOOM'OiOOCOHN 







O 
VO 


N03H(MiioSQOOaOH 

oopqpopt>b-cpooioioo^ 




vo 






VO 


mon^hnt)<hoo^hooo 
050opopopb-b-b-ocpcpipp 

^^ ^j ^tj "^ "^ "^ "^ ]jt1 , ^ "^ "^ "^ "^ 
^T ^X ^^ "^^ ^^T "^T ^^ ^3* ^n^ "^^ ^T "^^ "'vT 




VO 







OCMOt^^(MOt^-*^HO 0^t< 

OQOOpODCpNt>l>NCpoO 

cococococococooocococococo 


3- 




O 

CO 


rfl t^ 10 O N N 00 00 05'05 05 O O 
C0iKNOC0ffl^(MOQ0i0 5: 

C5C5C5q5opopopqpopt^t^t>b- 
6666666666666 




CO 







OMONIOCTOOMOOWO 
NOiOCOtMr- 1 05 00 b- CO <* CN 
05050505050500000000000000 

i irHi 1 1 IrHi 1 1 lr Ir-lr 1 r 1 1 1 r- 1 










00>-lvOC5(nCDO5COCOCOb 

XOONCCOiO^^COMNHH 
0500505050505050505050505 

obcbobobobooobobobobobobob 







II 


v O vo O vo *o vr O >oO oo 
t-i m rJ H co co ^- tJ- vo vnvo 


vo 






/>o ,* Departures, or Difference of 

DO De& ' Levels 






De 
Differ 


oartures, 
ence of I 


or 

evels 





TABLE II. 



77 



Departures, or 
Difference of Levels 


GO 

I 

ft 

O 

ft 



ft 
S 

ft 

M 

P 

O 

of 
ft 
ft 
p 

H 

ft 

si 

ft 
A 


0/ Departures, or Difference of 
26 * Levels 


26 o' 

i 

2 

3 

4 
5 
6 

7 
8 

9 

io 

ii 

12 

13 
4 
15 
16 

17 
18 

9 

20 

21 

22 
23 

24 

25 
26 
2 7 
28 
29 
30 

31 
32 

33 

34 
35 
36 
37 
38 
39 
40 

4i 
42 
43 
44 
45 
46 
47 
48 
49 
50 

5* 

52 
53 
54 
55 
56 
57 
58 

60 


Sines 

43837 
43863 
43889 
*439 T 5 
43942 
43968 

43994 

44020 
44046 
44072 
44098 

44124 
441 5 1 

'44 T 77 
44203 
44229 

44255 
44281 
44307 
44333 
"44359 

44385 
44411 

'44437 
44463 
44490 
44516 
44542 
44568 
"44594 
44620 

44646 

44672 
44698 
44724 
44750 
44776 
44802 
44828 
44854 
44880 

44906 
44932 
44958 
44984 
45010 

45036 
45062 
45088 
451 14 
45140 

45166 
45192 
45217 
45243 
45269 

45295 
45321 

45347 
45373 
45399 
Cosines 


60' 
59 
58 

? 

55 

54 
53 
52 
5i 

50 

49 
48 

46 

45 

44 
43 
42 
41 
40 

39 

38 

11 

35 

34 

33 
32 
31 

30 

29 
28 

26 

25 

24 
23 
22 
21 
20 

19 
18 

\i 

15 

14 
13 
12 
11 

10 

9 

8 

I 

5 

4 
3 

2 
1 
0-63 




O w-iO o O o O mo *o O 00 

SO W"> H") *$- r}- CO CO Cl tf M M 



CO 

vo 


I! 


CO 

3 

1 

ft 



ft 
Q 

ft 
ft 
ft 

F 

s 

ft 

c 
ft 

ft 


g 

H 
CO 
M 

Pi 


a 

ft 



hH 

ft 



cz? 
ft 

p 
p 

H 







NCOOOOOOOOOOOQO 
OJOQiMOQlMiOOOH^OO 

cccspc^opTjtvpt^qpptHG^cp 








ON 


MHQ0OWHQ0>0(MaONO 
T)*ip9)aiOH(MnpONqO 

6666666666666 





O 

00 


O-^CSC0I^(^OO^00CqK5C5 

NNNQOOOOOOOOHHH 

OH(NmTt*kpcpqpOHqq9 
ibxboibibibK5ibib6666 

COCQCOCOCOCOCOCOCOCOOOCOCO 




00 





CDNOOHW^iOOSOOOO 
OONOOiO^COtNHOOQON 
pt^rcpOrHCqCO^ipippt^ 
OOOOHHHHHHHHH 

cococococococococococococo 








OOOIOCOHGNICIMOQCOCO 
COCp^ipppt^CpppprHCq 

666666660NNNN 
CMcMCM<M<Mt>l<MCqcq<M<M<MCq 



vo 


O 


ooiio^oiaoiooioovooj 

HQO^HOO^HN^ONMO 
ppOrHrHCNCpcp^ipippp 

rH rH cq tfi (fq cq (fq cq c-i cfq ct i^q cfi 
Cq<?qCqcq!M<MCqcq<MCM<MCqCM 





% 


lONOH^OOOON^OaOO 

wcocco^o^oiooooo 

lpip'OONNCOOClOOHH 
1lrHrHi Ii It IrHrti 1 1- 1 r ( 1 ti 1 


5- 




C"> 


HOC5ffiQONCOLO-i(W(^HO 
rHrHqqCqOOCpCp-rJH-^lxpiOlOp 

cbocbcbcbcbcbcbeticbcbdo6 

1 IHr- It Ii- 1 1 Ii Ii 1 t 1 r- 4 t ( 1 Ii i 




CO 


O 


NMOONQOiiOCWOO^O 
NNO)cpqpqpCiffiOOOO 

cdocccooQbdodb6666 





O 


^NOWOOCTIOOOHtJINO 
Q0OH(MWt)ionQ0OH(M'^ 

T^H ^^ ^^1 ^^ ^5^ ^41 ^ji ^p *^i ^1 ^1 ^31 ^^1 





Eg ^ 

3 


"o "^ O "i O *o O vo O *o O "o O 
hi 11 t< H co co <$- -<j- 10 u->\o 








Latit 
zonta 
Diffei 


udes, or Hori- 
1 Distances for 
ence of Levels 


/> q Latitudes, or Horizontal Dis- 
O O 1>es ' tances for Difference of Levels 



78 



TABLE II. 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 



27" o' 
1 
2 
3 
4 
5 
6 

7 
8 

9 

10 



Cosines 
89 1 01 
89087 
89074 
89061 
89048 
89034 

89021 
89008 
88995 
" 81 



88955 
88942 



88915 
88902 



88875 
88862 



88835 
88822 



88795 
88781 
88768 

88755 
88741 
88728 
88714 
88701 



88674 
88661 
88647 
88634 

88620 
88607 
88593 
88580 
88566 

88553 
88539 
88526 
88512 
88499 

88485 
88471 



88444 
88431 

88417 
88404 
88390 

88377 
88363 



88336 
88322 



88295 
Sines 



o'6z 



Departures, or 
Difference of Levels 



27 



De Latitudes, or Horizontal Dis- 

tances for Difference of Levels 



O ^->0 >00 o O 00 WO ""> O 



a 05 oo 00 00 ao 
00 00 00 00 00 00 



00 00 00 00 ao 
00 00 00 00 00 



HHH(MHHHHO05Q0NU5 
C5 CO t^ 1 iiOOMNr- I ^ 00 <M CO 
rHrHpOpCOOpt^r^piOlO^ 
0000050505050505050505 

oooooooot^t^t-t^t^b-t^t-t^ 



HN^WQO^HNMffiiOOO 
NCTHHOOOCiODNNOO 
rHrHrHrHrHrHOOOOOOO 



H-^QOr- I -* GO i I CO CO 05 <M "* CO 

NfMNWOOMO-^o^OiOO 
WMCTNHHOOQffiOOOQO 

cocococooocococococococo 



HOHHHHHOOOOQON 
CfNOOr^OCxMOO^QiOHN 
^^Cpcpcp<^CqrHrHpO>p05 

cbcbcbcbcbcbcbcbcbcbcbcbo^ 

iOiOiOOiOiOiOiOiOiQiOiOiO 



ON^HN^ONnOlOHN 
>OHQ0>CH00iOHQ0^r-lXlT}( 
iO*0-**"*^COCOCO<M<MeNjr- I pH 



O^NH^NOTtfNO^lOOO 



O lO O O 10 C 3 IO 10 O lO >0 O 
CO CO CO CO 07 CO CO CO CO 07) CO CO CO 



0000000000050500 

:0 H C5 N O CO H Ci N O N O CO 
NNOOCDOOiOiOiOiOO'* 

cbcbcbcbcbcbcbcbcbcbcbcbcb 



It 



CpCONNNNNNNNOOCO 



OCONOMNOCONOCOffiOi 
HOO00NNOOO^W(N 

ppopopopopopopopopopopop 
obobobdoobcbobobcbobobobob 



62 



Degr. 



Departures, or Difference of 

Levels 



TABLE II. 



79 



Departures, or 
Difference of Levels 



27" o' 
i 

2 

3 
4 
5 
6 

7 
s 

9 

10 

ii 

12 

13 
14 
!5 
1 6 

17 
IS 

19 



Sines 

'45399 
'4542S 
4S4SI 
'45477 
45 So J 
4SS28 

45554 
45So 
45606 
45632 
45658 

45684 
45710 
4S736" 
45761 
45787 
45813 
45839 
45865 
45891 
45917 
45942 
45968 
45994 
46020 
46046 

46072 
46097 
46123 
46149 
46175 

46201 
46226 
46252 
46278 
46304 

46330 
46355 
463 8 1 
46407 
40433 
46458 
46484 
46510 
46536 
46561 

46587 
466 3 
46639 
46664 
46690 

46716 

46742 
46767 
46793 
46819 

46844 
46870 
46896 
46921 
46947 
Cosines 



0*62 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 



27 *** 



Departures, or Difference of 
Levels 



mo <oO J">0 mo mo mo 

0>0^ + tflW tf HI H 

o 



O^OQOH^NOWCO 

cpipcpt>oprHcp-^pcpqoOi 
lqiq^ibibcbocpocpcbcbo 



9 









OOHHHHHHHHfflNM 



co a <m 10 00 

CO^iOCONQOOOHCNW-^O 

cooocococococococococoooco 



OOHHN^cqWMWCOOOm 
NNOOt(iW(NHOOQONO 

rHrHrHG<i(7qcq(^i(7q(fq(fq<^(^(?q 

cococococococococococococo 



ffiNOiMONiOCTON^HOO 

WHONiOOlOOOOMHOiO 
(MCOCO^OCONNQOOOOH 



OOC^GHO(NOO>OHQO^ON 
ONQOQOCOOHiMNCOil^ 



rH(^C<|C0C0T^-^ipipCOCpt^l>. 

cbaDccbccbcccb(aoc3bcbdb 



QOSOO^fMHOOON 1 



cotfococococococococo-^^Tti 



Cp rH r^H rH rH C<J (?q ' _ 



o03oc5(mjnowo05(mo 
^ooncjohmthocoooo 
lpipipoocpcpcpcpcpcpcpcp 

^^ ^sH ^^ "^^ ^J^ "^^ "^J^ ^^ ^r* ^^ ^^ ^^ ""m* 



o m O m o 



10O m O m O mo 
e* d -<i- <4- m m\o 



62 



Latitudes, or Horizontal Dis- 
ff " tances for Difference of Levels 



80 








TABLE II. 






Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 


m 

P 

> 

O 
P 

i 

H-l 
P 

M 



w 

w 

H 

m 

H 

P 

<! 

H 

g 

O 

i 

ro 

Q 

& 

H 
W 

I 


^q Latitudes, or Horizontal Dis- 
AtO Be8r " tances for Difference of Levels 


28 o' 


2 

3 

4 
5 
6 

7 
8 

9 

IO 

ii 

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 

4i 
42 

43 
44 
45 

46 

47 
48 

49 
5o 

5i 
52 
53 
54 
55 
56 
57 
58 

60 


Cosines 
88295 
88281 
88267 
88254 
88240 
88226 

88213 
88199 
88185 
88171 
88158 

'88144 
88130 
88117 
88103 
88089 

88075 
88061 
88048 
88034 
88020 

88006 
87992 
87979 
87965 
87951 

87937 
87923 
87909 
87896 
87882 

87868 
87854 
87840 
87826 
87812 

87798 
87784 
87770 
S7756 
87742 

87729 

87715 
87701 
87687 
87673 
87659 
87645 
87631 
87617 
87603 

87589 
87575 
87560 
87546 
87532 
87518 
87504 
87490 
87476 
87462 

Sines 


60' 
59 
58 

56 

55 

54 
53 
52 
51 

50 

49 
48 

46 

45 

44 
43 
42 
4i 
40 

39 
38 

11 

35 

34 
33 
32 
31 

30 

29 
28 

26 

25 

24 
23 

22 
21 

20 

19 
18 

\l 

15 

14 
13 
12 
11 

10 

9 
8 

I 

5 

4 
3 

2 
1 
o*6i 




"ovoOvoOvoOvoOVfcOvoO 

Ifl <0 + + M M S H H 


It 


m 

P 
> 

g 

o 

H 

o 

1 

H 

P 

tf 

o 

w 

s 
p 

3 

w 
p 





M 


1OCDQOOO1 I <N (?3 G<1 CO CO <M <M 

ftCTiCOOfNiOgOH^NOWCD 

(MNH990<(X)NcppT)( 

GO0000O0O00OO00OQ0OO0000OO 


o 
o 


O 


XOCCfMOOOO^r-HOOCOCOOiCD 

COO-^QOHiOCiWOO-^NH 

^^cpqq<?qfHppo505Qpi>^ 
66666666cdbdbdb<x> 


o 

OS 




00 


O-HHOHCDO^00CqO0i 
MOOfMNHOOiOOCOOOtMO 
COOiO^T)(COCO(MHHOOO 
66666666606605 
iS.I>l>t^t>Ist^l>t-t^Jst^O 


o 

00 




IS 


QiOHOHOHOHN(MN(N 
CptT-I^pCpipip^rjiOOCpCNiqq 
rHrHrHi^rHrHrHrHrHrHrHrHrH 


o 




VO 


NMOiOHNCTGO^OOHN 
CiOqcqpqpb-l>C)poipiOTH 

iOiOOiOiOiOiOiOK5iOOiOtO 


o 

VO 


O 


44-147 
44-113 
44-079 
44-044 
44-010 
43-975 
43-941 
43-906 
43-871 
43 836 
43-801 
43-766 
43-731 


o 


O 


QOOCOOQOOMlONCiHCOiO 
HQOKOOOiOCTCJOilHQO 

m^wqq^MHHoppOQ 
10 10 ib 10 b ib 10 *h b b ib -* 

cococococococococococococo 




O 
to 


Q0Q0NNO0^i*WCqHOO 
QOO-tlMOCOO^lMOOOOCJ 

^^"^^^cpcpcpcpcpc<ic<ic<i 

6666666666666 


o 

CO 


O 
O 

If 

H 


OiO(NOOTjiOO(Mop5HCOiN 
lO-^WHOONO-tCC^OO 

ocpcpcppipipipipipipipTi< 

rlHr 1 i 1 i Ii Ii IrHrHrHrHrHi 1 


O 
M 


(M(MhOOOQOQONOCOOtP 

dbcob<#cdocb<ccbcbdbdb 


O 


"o oO >oO w->o o O o o o O 

M M c* H CO CO <$ t$- U-> OVO 


oo 


,, T\'fF 


>nce 


of 


Departures, or 
Difference of Levels 


6: 


L esr ' Levels 











TABLE II. 




81 


Departures, or 
Difference of Levels 


ft 

> 
ft 



ft 
w 

p 



of 

ft 
p 

ft 
p 


rtO Departures, or Difference of 
28 ** P ; Levels 


28 d 
i 

2 

3 
4 
S 
6 

7 
8 

9 

IO 

ii 

12 

H 

s 

16 

7 
18 

19 
20 

21 

22 

23 
24 
25 
26 

27 
28 
29 
30 

3i 

32 
33 
34 
35 
36 
37 
38 
39 
40 

4i 

42 
43 
44 
45 
46 
47 
48 
49 
5 

Si 

52 
53 
54 
55 
56 
57 
58 

s 


Sines 
46947 
46973 
46998 
47024 
47050 
4775 
47101 
47127 
47152 
47178 
47204 

47229 
'47255 
47281 
47306 
47332 

47358 
47383 
47409 
'47434 
47460 

47486 
"475" 
'47537 
47562 
47588 

47614 

47639 
47665 
47690 
47716 

47741 
47767 
47792 
47818 
47844 

47869 

47895 
47920 
47946 
47971 

'47997 
48022 
48048 
48073 
48099 

48124 
48150 
48175 
48201 
48226 

48251 
48277 
48303 
48328 
48354 

4?379 
48405 
48430 
48455 
48481 

Cosines 


6V 
59 
58 
57 
56 
55 

54 
53 

52 

Si 
50 

49 
48 

46 

45 

44 

43 
42 
4i 
40 

39 

38 

11 

35 

34 
33 

32 
31 

3 
29 
28 

26 

25 

24 
23 

22 
21 
20 

19 

18 

3 

15 

14 
13 
12 
11 

10 

9 
8 

I 

5 

4 
3 
z 
1 
o*6i 




O o O >j~>0 vo O o O vo O vo O 

VO IO "1 + + M M tl H M 11 




ll 
11 


ft 

s 

a 

O 

pq 
O 

ft 



ft 

fa 

fa 
h- 1 

P 

m 
fa 


H 

m 

M 
P 

O 

3 

W 



ft 

P 

I 

1 1 

H 






^ t> O 0: O 00 H -H^ O <M O CO 

Q O (N CO * io t> op O 71 w ?: ^ 
t |> b, |> t"- t>- t> fr* GO 00 cb 0? 

^^ ^^ ^^ ^r ^^ ^nP " t: t "*^ *^r "*^ ^p *^ ^j^ 











cqoocoo-Ho^o^ci^coco 

iOOOOOH(MT((iONOOCHCO 
^CO^ipNCpOOH^^CO 

g^ g gn (N ch gm 0? cb cb cb 00 2 2 

T^ T^i ^1 T^l T^l "^Jl ^^ "^ "^ "^ "^ *^T* "nP 



00 


OOOCOOOOO^'ONOKMLO 
lOOOOONNWNNXODOO 
iOb-00OrHGN0pTi<avpl>~ 

b-t^b-b-b-obdcGbdoobcbobcb 
00 co co co 00 co co co co co 00 cc co 




00 







concciMfM^HOOOooooN 

CO IO * CO (M H O C5 00 >o ^ CO 
GOC50r7HCNCp'^^pcpi'-opC5 

g^ c^ cb cb cb cb cb cb cb cb cb cb cb 
co co co co co co co co co co co co co 



vo 


ODiO(MOOCOOOC005 0(MO 
O ^ (N O N IO (M O O CO rH CO 
H CM CO OI t^ 10 O N N GO 9 O O 

obob&obobobcbobabdbdb66 

GN GN GN GN CN CM GN CN GN GN GN CN GN 








COOOtMOO^COfMOOCONO 

Ncoooc:oiocico-t<Hi>rti 

^lOOCNNOOOOOHHIN 

cb cb 00 cb cb co cb cb cb -^ ^ ^ ^ 

GNCNGNGNGNCNGNGNGNGNGNGNGN 



vo 





OOHCOt)(iO'ONCOOOH(M 
t^C000C000CCXC0CC'--t<O-t i Ci 
J>.C000OOOOrHrHGNGNCpC0 

000000006066666600 

1 (i li li li li 1 1 It IHr- It 1 r 1 i 1 








iMHOCOOOC5HOOOO^ 

oo (M co n 1-1 lo c: * 

OHH(MCTNcpcOMT)l'iiLp O 
1 It It It It It It ItIt It It It It 1 





O 


OH'OOIOOCOO^OtOHO 

QOH^OOHTfOO CM 7* t- O 

CO il TJI rP t(* 10 9 ip 9 9 
6666666666000 





O 


ICOOOCOOOCT^NOCCjiOOO 
O O O) W -* LO N 00 O H 01 cc ^ 
O b- t-- b- l^ t^ t> t- > GO Op CO CO 





if 


v o oO vo O vo O "~> o vo o vo o 



00 






Latitudes, or Hori- 
zontal. Distances for 
Difference of Levels 





Latitudes, or Honzoi 
1 *>eS"' tances for Difference ( 


ital j 
)fLe 


Uis- 
vels 



D 3 



82 








TABLE II. 






Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 


00 

> 

c 

H 

Q 

s 

S 
H 
R 

tf 

O 

W 



H 
0Q 

1 1 

R 





3 



w 

P3 



of 

w 

R 

5 

H 

M 

H 

h3 


qq Latitudes, or Horizontal Dis- 
v eff * tances for Difference of Levels 


29 O' 

i 

2 

3 
4 
5 
6 

7 
8 

9 

IO 

li 

12 

13 
14 
15 
16 

17 
18 
19 

20 

21 
22 
23 
24 
15 
26 
27 
28 
29 
30 

3i 

32 
33 
34 
35 
36 
37 
38 
39 
40 

4i 

42 
43 
44 
45 
46 
47 
48 

49 
50 

5i 
52 
53 
54 
55 
56 
57 
58 

e 


Cosines 
87462 
87448 

87434 
87420 
8740s 
87391 

87377 
87363 
87349 
87335 
87321 

87306 
87292 
87278 
87264 
87250 

87235 
87221 
87207 
87193 
87178 

87164 
87150 
87136 
87121 
87107 

87093 
87078 
87064 
87050 
87036 

87021 
87007 
86993 
86978 
86964 

86949 
86935 
86921 
86906 
86892 

86877 
86863 
86849 
86834 
86820 

86805 
86 79 x 
86777 
86762 
86748 

86733 
86719 
86704 
86690 
86675 

86661 
86646 
86632 
86677 
86602 
Sines 


60' 
59 
58 

5<5 
55 

54 
53 
51 
5i 
50 

49 
48 

46 
45 

44 
43 

42 

4i 

40 

39 
38 

36 
35 

34 
33 
32 
3i 
3 
29 
28 

S 

25 

14 
23 
22 
21 

20 

19 

18 

17 
16 

15 

14 
13 
12 
11 

10 

9 
8 

I 

S 

4 
3 
2 
1 

o"6o 




O oo oO *oO oo oO <00 
VO "Oio^^-MMN cl it w 

O 
O 

VO 


2* 
If 


P 



H 

O 

5 



of 



ft 






(MHOOQ0N5M(MO000(N 
OOOHONOMOON^NO 

^cowcMrHrHpocc<pb~cpcp 

GOQOOOOOUOOOOOQOOOOOOOQOOO 






O 

ON 


OfNOOiOOfflHNCOOOOONCq 
HOQ0<MOOOOWNO^ 
NOipiprr<MMCl(^H0005 
cbcbcbcbcbcbcbcbcfecbcbcbb- 


O 

ON 


O 

00 


OrHlOO^OO^NHOQ^OO 

OOcocpt^ocpipip-^coeocM 


O 
00 





CO^^lOlOlO-H^^TjH^CMr-l 

cm t> cm i>. cm t^ 01 1^ cm t^ cm ^ cm 

rHrHrHrHrHOOOOOOOO 

ocoooocoooooooo 


O 




VO 


N rf( (M O N Tf( h CO IO Ol Q O H 

ffMNWPlCqHHOOOO 
CM CM CM CM CM CM CM CM C^i^i CM CM rH 


O 

VO 





HlflOdOWNHOO^NH 

t^cp ( pOipuoo^^'*cpcpcp 


O 





lOOQOOHCO^iONCOOOH 
COU5<MONT)(r-icOiO(MQNTrl 
Ocpoocpcpqpb-i--t>cpocp 

C0COCOO2CO00OTC0CC)C0C0COC0 


% 




CO 


ONOiOCCMOOOOO^CTH 
CTWHHHHHOOOOOQ 

ocbocbocbocbcbcbcbcbib 

CMCMCMCMCMCMCMCMCMCMCMCMCM 




CO 





(MTOrtlOO^NOOQO^OiOO 








CO Ci <M lO 00 - IWCOQfMONO 

t^t>b-t^t^t^b-cpcpcpoocp 

abcboboboboocbcbcbdbcbccob 


O 


11 


O oO "lO 10O >^"> O vr> O >0 O 
M 11 tS N CO CO -^- tJ- *0 IOVO 

O 

on 




-p. iv/r 




De 
Diffei 


partnres, or 
once of Levels 


6r 


J Deff " * 'Levels 















TABLE II. 




83 


Departures, or 
Difference of Levels 


XII 

O 



N 
r 

P 

P* 

O 

w 

M 
P 

H 

ft 

W 
P 


aa _ Departures, or Difference of 
4i V De *" Levels 


19 o' 

i 

2 

3 

4 
5 
6 

7 
8 

9 

IO 

ii 

12 
1? 

14 
15 
16 

17 
18 

19 

20 

21 

22 
a? 
H 

*5 
26 

2 7 
28 
29 
30 

3i 
3i 
33 

34 

35 
36 
37 
38 
39 
40 

4i 

42 

43 

44 
45 
46 

47 
48 

49 
5 

5i 
5* 
53 
54 
55 
56 
57 
58 

60 


Sines 
48481 
48506 
48532 
48557 
48583 
48608 

48633 
48659 
48684 
48710 
48735 
48761 
48786 
488 1 1 

48837 
48862 

48887 
48913 
48938 
48964 
48989 

49014 
49040 
49065 
49090 
491 16 

49141 
491-66 
49192 
49217 
49242 

49268 
49293 
49318 

49344 
49369 

49394 
49419 

'49445 
49470 

"49495 

49521 

49546 
49571 
49596 
49622 

49647 
49672 
49697 
"497 2 '3 
49748 

49773 
49798 
49823 
49849 
49874 
49899 
49924 
49950 
'49975 
50000 

Cosines 


60' 
59 
58 

56 
55 

54 
53 
5* 
5i 

5 

49 
48 

46 
45 

44 
43 

42 

4i 

40 

39 
38 

11 

35 

34 
33 
32 
3i 

30 
29 
28 

11 

15 
24 
*3 
22 
21 
20 

'9 
18 

3 

J 5 

H 
13 
12 
11 

10 

9 
8 

I 

5 

4 
3 

2 

I 

o"6o 




O w->o oO oo v^o **"> O 00 

VO >o o + rj- m rt c< ih m 

O 
O 
VO 


la 

It 


w 
3 
P 

> 



H 



P 

tf 

O 



ft 

Q 

1 

oq 

3 
3 

EH 

s 



g 

P5 



of 
W 

P 
O 

H 
H 





M 


H 00 (5 (N a O (N c: w 00 ^ Q 
^HCpb^GOCirH^Cp^Cpt^opp 
^1 T51 "^^ t^ ^4 ^H ^J1 ^1 *^H t^ "T^ ^H lO 






O 

ON 


OONHOO^OO^^OWNQ 

K"fCNOOHK-)(iOSOOO 
ONOOGiCMW+iOONOOO 

^T" ^T 1 ^T 1 ^T* ^P ^T 1 ^vT 1 ^^ ^sT 1 ^T 1 ^T ^^ ^T 1 




ON 


O 
OO 


OOOOO-iMidoONOOOQ 
0000C3QOQC3OOOO 
NOOCiOHCNOO^iOCONOOO 
0)0)0)6666660666 

cococccccococooococococo^ 


O 
00 


O 


N O O ^ (M H O 00 S IO CO (M O 

2i]Hor^xNoi*(MHO 

COH(M(NM^iOONOOCiO 

cococococococococococococo 


O 


O 
VO 


OiOHNWOiCiHNWO'HO 
OOCiiHOC'^NON'tfNO 

p m q-i cc cp -+ t>- op p p 

6000060666666 

CM<M<M(MC^GN<MC<ICqC<lG<l<MCO 


O 

VO 


O 


O-^COt I^OOt I-tHOOt l"^t^O 

^OCOMOiOfMOO^HNMO 
(NOCOTJtfiOOONOOCOOO 






-* 


cqco-^ioooi^oooooooo 

O"^0~+0-+O^0^t<0 

6666066666666 
1 IHr- It Ii 1 H H r- IplHHr 1 CM 


% 




CO 


iKMOCMOWHOOTiKMO 
^00(MOOCONH-<#00(NOO 
lOiOCiOONNGOGOGOOOO 




CO 




Cl 


C0(MNCT00CC00^OtHO>SO 
O'M^NQ'MiiNGfMONO 
(^r^t^t^i^opopqpqppppp 
6660666660666 








OOH'tOQ(M'tNO(MONO 
-fONOOOHWMKJONOOO 

Goooxoooooooppppp 





la 

0* -r. 

S 

2^ 


It 11 fj H CO CO ^ -<4- W> OVO 

O 
On 




Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 


/j|> Latitudes, or Horizor 
%}\) !> tances for Difference c 


ital Dis- 
>f Levels 



81 



TABLE II. 



Latitudes, or Hori- 


zontal Distances for 


Difference of Levels 




Cosines 




30"* 0' 


86602 


60' 


1 


86588 


59 


2 


86573 


58 


3 


86559 


57 


4 


86544 


56 


5 


86530 


55 


6 


86515 


54 


7 


86501 


53 


8 


86486 


52 


9 


86471 


51 


10 


86457 


50 


11 


86442 


49 


12 


86+27 


48 


13 


86413 


47 


H 


86398 


46 


IS 


86384 


45 


16 


86369 


44 


'7 


86354 


43 


18 


8634 


42 


'9 


86325 


4i 


20 


86310 


40 


21 


86295 


39 


22 


86281 


38 


23 


86266 


37 


24 


86251 


36 


25 


86237 


35 


26 


86222 


34 


27 


86207 


33 


28 


86192 


32 


29 


86178 


3i 


30 


86163 


30 


3i 


86148 


29 


31 


86133 


28 


33 


861 19 


27 


34 


86104 


26 


35 


86089 


25 


36 


86074 


24 


37 


86059 


23 


3 


86045 


22 


39 


86030 


21 


40 


86015 


20 


4i 


86000 


19 


42 


85985 


18 


43 


85970 


T 7 


44 


85955 


16 


45 


85941 


15 


46 


859=6 


14 


47 


8591 1 


13 


48 


85896 


12 


49 


85881 


11 


50 


85866 


10 


5i 


85851 


9 


52 


85836 


8 


53 


85821 


7 


54 


8,-806 


6 


55 


85791 


5 


56 


257-7 


4 


57 


85762 


3 


58 


85747 


2 


59 


85732 


* 


60 


85717 
Sines 


0-59 


Departures, or 


Difference of Levels 



30 



Latitudes, or Horizontal Dis- 
*' tances for Difference of Levels 



io >o i <J- w to rt c* m m 

o 



CNONMONMOiO-HCDHN 
O^iOOOHCCOOOH-^OOH 
OiO-^(WW(NHOOQ0Nl> 

c 6 6 6 6 6 6 6 o ib 10 10 

00000000000000000000000000 



(MNHOC5WN005NO(NiO 

Oocqpt^ocpip-^-^ic^crqcNrH 



ppopopt^-ppip 
oocsodsobobooobobobabob 

0000000000000 



WHOOONOiMOOO^lN 
(MNOIO-O-iOhioOiOQ 



OOO 



OOOOOOOOOO 
OOOOOOOOOO 



HO)iOO(M'XOJi50>00 
OHNc:X"tOiOOO(MNCO 
CiOGOOONNOOOipip^'i* 

r^r^HrHi^HrHrHr^H-Hr^-lrHrHrHi^H 

I00i0i0>000i00i0i0uoi0 



HLOTOHUJXH-fKOWOQO 

OONOiiOHOC-tiONWCSio 

(^^C^rHr^r-lOppOOOpcp 

2222222222222222?l253?3?3^ 

*^r ^j^ "^^ ^^ ^^ *^T ^T ^^ ^^ ^^ ^^ "^J^ "^f 



HfMCOWTtioiCOOOOON 
CpO>iOipiO'*ri(Tt('^MCOCO(N 

cocccococococococococccoco 



HOMOCCHONiKMONiO 
OOOrnONiKMOXOCOH 
ppppqpopopopqpwb^i^b- 

ib 10 10 o ib ib ib ib >b ib ib >b ib 
cm cm cm cm cm cm cm cm cm cm cm cm cm 



OO^2(MNWCC50Q0 
NOaN^HOX)NiOT)( 
WWCNCN(N5i|NCNHHHH 



OMOOOH^OCJHilK^ 

oc-fc:r'M-'oooxNN 

OOOOOOOOOiOOOiO 

oocbcbaDcbobdoaDobcbobaDob 



59 De &- 



Departures, or Difference of 
Levels 



TABLE II. 



86 



Departures, or 
Difference of Levels 



Sines 
50000 
50025 
50050 
50076 
50100 
50126 

501 51 
50176 
50201 
50226 
50252 

50277 
50302 
50327 
50352 
50377 

50402 
50428 

50453 
50478 
50503 

50528 

50553 
50578 
50603 
50628 

50653 
50679 
50704 
50729 
50754 
50779 
50804 
50829 
50854 
50879 
50904 
50929 
50954 
50979 
51004 

51029 
51054 
51079 
51 104 
51 129 

51154 

51179 
51204 
51229 
51254 

51279 
51304 
51329 
51354 
51379 
51404 
51429 
5H54 
51479 
51504 

Cosines 



0-59 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 



QA _ A Departures, or Difference of 
OO * F 'Lev,!, 



1 gf 



OOOOOOOOrHAlrHf-^ 



QMCOWiOQQH'tOQHM 
QH(MT(i>OCNC50H(Ni'iO 

9 7 1 ^ 9 7 'P 9 ^ ? 9 r 1 ^ w 
ibibibibibibibibib6666 
, ^p ^p m^ ^^p ^^p ^^ ^t^ ^p ^p ^^ ^^ ^^ *^ 



81 1 1 icqcqcocococococococo 
000000000000 

ohimm^loonoooohim 
6o66666666hhh 

^^ ^^P ^^' ^^ ^^ ^^ ^^ "'^ ^^ ^^ ^^ ^^ ^^ 



000^<M000 10WOOO>0 05 

00NSOi((NHO05NO0 
OHUJCOMHOONNOOOiO 



O 1 1 ICOWN(MN^QC(MK(M 

OMO(MOMO(MONiO(MO 
OOHiMOOOjTfioOONOOO 
6666666666066 

cococococooorococococococo 



O93OOH^C0O(MONO(M 
OO(MQ00HN05OO(Ma)0 
OOHHNopcCrHipoOON 

1 10 ib o 10 i ib ib ib 10 ib ib 



00-<HHHH(M(M(N(MNH 



OOOlOWHGC'O'f^OO^H 
O W N H LO 00 (M O O W N H O 
OOOHHrHqqq'icpMW^f 

ib ib ib ib ib ib ib ib ib ib ib ib o 



OlOOlOHOHCHOHCDH 
O (N lO N O ^ C N O CI lO N O 
OOOOri 1 H H (N (M (M <N M 

6666666666666 



OCOiDCOOWiOOCOWiSCOO 
OHOK? i O 1 - X OH(NM5 

OOOCOOOOHHHHH 

ibibibibibibibibibiooioio 






r Q Latitudes, or Horizontal Dis- 

0\) Desr ' tances for Difference of Levels 



86 








TABLE II. 






Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 


CO 

9 





i 1 
P 

tf 

O 
Pn 

CO 

W 





H 
CO 
t I 

p 
3 

H 
O 

l-H 
3 

O 

w 



co" 
P 

s 

H 

M 

H 

<! 


Q1 n Latitudes, or Horizontal Dis- 
OJL es "' tances for Difference of Levels 


jio' 
i 

2 
3 

4 
5 
6 

7 
8 

9 

IO 

ii 

12 
J 

14 
15 

16 

17 
18 
19 

20 

21 

22 
23 

24 

25 

26 

27 
28 

29 

30 

3T 

32 

33 
34 
35 
36 
37 
38 
39 
40 

4i 

42 
43 
44 
45 
46 
47 
48 
49 
50 

5i 

52 
53 
54 
55 
56 
57 
58 

60 


Cosines 

85717 
85702 
85687 
85672 
85657 
85642 

85627 
85612 

85597 
85582 
85567 
85551 
85536 
85521 
85506 
85491 

85476 
85461 
85446 
85431 
85416 

85400 
85385 
85370 
85355 
85340 

85325 
85310 
85294 
85279 
85264 
85249 
85234 
85218 
85203 
85188 

85173 
85157 
85142 
85127 
85112 

85096 
85081 
85066 
85050 
85035 

85020 
85005 
84989 
84974 
84959 

84943 
84928 
84912 
84897 
84882 

84866 
84851 
84836 
84820 
84805 
Sines 


60' 
59 
58 

? 

55 

54 
53 
52 
5i 

5o 

49 
48 

46 
45 

44 
43 
42 
4i 
40 

39 
38 

11 

35 

34 
33 

32 
3i 

30 

29 
28 

26 
25 

24 
23 
22 
21 

20 

19 
18 

3 

15 

14 
13 
12 

11 

10 

9 

8 

I 

5 

4 
3 
2 

0-58 




O oO vi too too too too 
vo vi >o ^- ^- w to tf m M 


00 
to 


p 

It 

IS 


CO 
h3 

> 

O 

H 

O 

5^ 

P 
O 

co~ 

P3 
D 

H 

05 

p 

P 






HrfCOH^COOHOOlClOOO 

10 1 10 10 10 ib 10 1 ib -rt< -^ -^ 

GOOOQOOOOOGOQOOOOOOOOOOOGO 








ON 


^NO^NOMOOWOOIM 




ON 


O 

00 


^TjIMWCqiMHOQOONC^ 

NHlCOCTNHtOOOICO'i 
ipip^e5M(N(MrHOO05O00 


O 
00 





(MOO^OOOIONQO^HNW 
O *+ O * C; CO 00 0: N (M N H 
p^qoqpb>t>-Ocpipip^T}Hco 

6666666660666 

OiOOiOiOiCiOiOiOiOiOiOiO 








0>00OO^XWNH100CO 
WQ0-*O-tO0HO(MNlM00 
^MCOfiilOlWHrlOOClOOp 
HHr 1 i lr- IHHHHHOOO 

lOiOiOiOiOiOiOiQiOiOiOiOiO 




xO 



to 


00HMi0NO(M-f<CNaiHOl 
lO CM 00 * O 1^ CO CI lO i 1 t^ ^ O 
qpqpb-t^t^opipioip-^^^ 
bq bi bi bi bi cm bi bi cm eg bi bi cm 


O 

to 



<* 


snooocdo>oio^^c:ct 

QOOWGCMON'tHCCiOCM 
CqN(NrtHHHOO9O039 

cootoootiwcocococococococo 


% 




CO 


ioeooN^CToe^ooo>OH 

1 Gi b COIONOKHX'O'* 

b-cpoocopipipipip-^-^^ 
ib ib ib ib 10 ib ib b 10 ib ib ib ib 

CM CM CM CM CM CM CM CM CM CM CM CM CM 




CO 





CO00CO00Ct'O0C?CX)fMb-<M?Di 1 

^ PI H O CC O LO r (M O O N CD 

^^^ooooooocsocro 









(M^SOHifOQHOOCCO 
NOC-i'^COCMHHOOCOQO 
ipipipipipipipiOipiO-^'*^ 

caDooooobaDcccoocdoob 


g^ "b to to to u-) t^o 100 
5 s I 

ghj| CO 









Departures, or 
Difference of Levels 


5r 


S^- ' Levels 















TABLE II. 




*7 


Departures, or 
Difference of Levels 


GO 
> 

9 

O 
O 

P 

B 

p 



m 

n 
3 
p 

H 

* 

p 


Q1 #* Departures, or DifTerence of 
OL e S . Levels 


31 o 

2 

3 

4 
5 
6 
7 
8 
9 

IO 

ii 

12 

'3 

4 
5 
16 

17 
18 

19 

20 

21 

22 

23 

24 

25 

26 

27 
28 

29 
30 

3i 

32 
33 
34 
35 
36 
37 
33 
39 
40 

41 
42 
43 
44 
45 
46 

47 
48 
49 
50 

5i 

52 
53 
54 
55 
56 
57 
58 

I 9 
60 


Sines 
51504 
51529 
51554 
51579 
51603 
51628 

51653 
51678 
51703 
51728 
51753 

51778 
51803 
51828 
51852 
51877 

51902 
51927 
51952 
51977 
52002 

52026 
52051 
52076 
52101 
52126 

52151 

52175 
52200 
52225 
52250 

52275 
52299 
52324 
52349 
52374 

52399 
52423 
52448 
52473 
52498 
52522 
52547 
52572 
52597 
52621 

52646 
52671 
52696 
52720 
52745 
52770 
52794 
52819 
52844 
52868 

52893 
52918 
52943 
52967 
52992 
Cosines 


60' 
59 
58 

11 

55 

54 
53 
52 
5 1 

50 

49 
48 

46 
45 

44 
43 
42 
41 

40 

39 
38 

11 
35 

34 
33 

32 
3i 

30 

29 
28 

2 

25 
24 
23 
22 
21 
20 

19 

18 

\l 

15 

13 
12 
11 
10 

9 
8 

I 

5 

4 
3 

2 
1 
0-58 




O oO ^ O o O oO vno vr0 

O 
OO 


H 

M 











Q00C0l^(MOO**00 < 10 00 <M 
O^iONOlM 85 N- O <M -* 


DC 

- 

1 




ON 


WOOOOrHCOlOOOOOO<MCO 

'OONCJOHfMCO'^iONOOQ 





- 


O 
00 


25S22353'rj'r , ooooi^coioco 

OOOOQOOOCJOOOO 

1 1 1 1 1 IrHHtHHHHfflfjlKlW 




00 








COOb-^rHOOlOCqOOlOrHQO'* 
JOTjKMHOOONO^KCqOO 
OrHf>lcp^1^ipcpt^Q0OOO 

cococococococococococococo 





H 

(1 
- 

c 





(MN(MOH100^0CONH0 
ONiO(NON5(NQN"i(Cq05 
OqiprHG^CqcprJH-^ipcpl^tv. 

OOrHi Ii IrHrHrHrHrHrHrHr-f 

cocococococccococococccoco 





6 





(M^OC>HMU5NffiH(MT)(0 
b-OpqpCipprHrHfMOOCO^T^ 





5 

an 
9 





HHHHHOOOQOXNN 
OLCOiOOOOOCiitO^O 
OONNOOXOOOOOhh 

OOOOOOOOOrHr^rHr^ 





C 





HQ0OO000(MOOC0H00 

10 00 (M :: n h ^ qo cq a 

^TMOppCppt^t>t>Qpopop 

ib ib ib >b ib >b ib >b ib b ib ib 

iir- li 1 1 IHHHr- IrHi It-Hi It 1 




fO 


s 

c 


O 


HOOiOOiOOiOO^OrffOO 
O (N O N O (M C N O (M * N C5 

co w 00 w f f f Tt< 10 10 c 
0000000060600 


O 


u 
off 

- 

I 


O 


OMOOOOWONOIMTilNO 
L0ON00OH(MW0ONQ0Cl 
r^ H H H (^ (N W C>1 (N ^ (>1 <N (Tl 

ibibiboioibibibibibibibib 





n 


"q "> o >oO >nO o O 10O >oO 



CO 






Latit 
zonta 
Differ 


ides, or J- 

Distance 

sncc of I 


ori- 
B for 

evels 


51 


s Latitudes, or Horizont 
* * tancefl for Difference of 


ftlD 
Lev 


s- 

1> 



88 



TABLE II. 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 


3 

1 

rJ 




tf 

f^ 
1 1 

P 


8 

ft 

O 

1 ( 
P 

1 



N 

3 

O 

H 



of 

P 
B 

H 
t 1 

H 

3 


OA _ Latitudes, or Horizontal Dis- 
04i eB ' tan ces for Difference of Levels 


32 o' 
i 

2 

3 

4 
5 
6 

7 
8 

9 

IO 

ii 

12 

3 

H 
15 
16 

7 
18 

19 

20 

21 

22 
*! 

24 
25 
26 

27 

26 

29 

30 

3? 
32 
33 
34 
35 
.36 
37 
38 
39 
40 

4i 
42 
43 

44 
45 
46 
47 
48 
49 
50 

5i 
52 
53 
54 
55 
56 
57 
58 

& 


Cosines 
84805 
84789 
84774 
84758 
84743 
84728 

84712 
84697 
84681 
84666 
84650 

84635 
84619 
84604 
84588 
84573 

84557 

84542 

84526 

845 1 1 

84495 

84479 

84^64 

84448 

84433 

84417 

84402 

84386 

84370 

84355" 

84339 

343'3 
84.308 
8.;i92 
34-77 
84261 

84245 
84230 
84214 
34198 

84182 

84167 
84151 
84135 
84119 
84104 

84088 
84072 
84057 
840 j.i 
34025 
84009 
83994 
83978 
8396^ 
83946 
83930 
83915 
83898 
83882 
83867 
Sines 


6V 
59 
58 

% 

55 

54 
53 
52 
5i 
50 

49 
48 

46 
45 

44 

43 
42 
4i 
40 

39 
38 
37 
36 

35 

34 
33 
32 
3i 

30 

29 
28 

26 

25 

24 
23 
22 
21 
20 

19 
18 

M 

r 5 

14 
13 
12 
11 

10 

9 
8 

I 

5 

4 
3 

' 

0-57 




O o O o O oO oO mo oO 






CO 

1 

is 

PR 
O 

w 



& 
P 



O 

of 
W 


p 

1 

P 





M 


OOS03HOQ0O(Nri(C0 
qpt^OiO^-^f. 00CM--H^O0iQ0 

00000000000000000000000000 


O 
O 


O 

o\ 


TJH 10 tQ CD 1 iO iO VO -^ ""* cq -h 

iMOQOH-t*NOCO*OOCTiOOO 

cpq^rHr-ipciOopt^cpoic^ 
oooooibibibibibibibib 


O 

On 

O 

00 




O 

OO 


^ 00 ^ O O ?: N O * 00 (N O 


O 


CO O IO 1 IO(NNMNN<MN 
Or-JiOO^OrDOOtTq^rHOO 
CpCpCN^rTHOpCiOSOpopt^l^ 

CiCiociCiociobobobobobob 





O 


^:Q-<oocot^oc<iioooo 
oomo^oooioooHOffi 
opopt>-t>pppppTii'^coco 
0000000000000 








QOWQO-iOOSJOOHNM 
^NNN(MHHOOOOiO 

23 3 ^3 23 23 ^ 3 1 * Cq >1 rH rH 


O 


% 


S'zlQS^^^s^^^ooot^ 

NOOtMOOCCOt HHISTjl 

popqpopt^b-b~t^pppii 
o?cb<rocbcbcb<wcbcbcbcbcbeb 
cococococococococococococo 


% 




CO 


Hooio^ooiooioo^HNrjo 

t^i 1 05 N -t (M O N LO ?5 O 00 O 

ib ib ib ib ib 1 ib ib ib ib ib ib ib 










-^ O O IO O W 00 ?1 O H 10 3i CO 

o^^HdoootocooioMN 
poiCipopopopcooooooot^t>. 
0000000000000 

rHr Ir 1 r It- IrHrHr Ir-Hr (r 1 1 Ii 1 







M 


OMON<M^OOOO(MION 

obobobobobobobobobobobobob 


O 


| 2 

7 bo 


O o O voo voo o O *o O >oO 

w m c4 N m w + ^- >o v>vo 





erw ^ Departures, or Difference of 
Ol * Levels 


Do] 
Differ 


lartnres, 
ence of L 


or 
evels 











TABLE II. 




80 


Departures, or 
Difference of Levels 


go 

p 

> 

h 

O 

O 

m 
gj 

P 

Ph 
O 

0? 

p 

S 

p 


00 _. Departures, or Difference of 
OZ Be *' Levels 


32 o' 

I 

2 

3 
.4 
5 
6 
7 
8 

9 

10 

ii 

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 

5i 
52 
53 
54 
55 
56 
57 
58 

6o 


Sines 

52992 

53017 

53066 
53091 
53"5 

53i4o 
53164 
53189 
53214 
53238 

3263 
53288 
53312 
53337 
53361 

53386 
534" 
53435 
53460 
53484 

53509 
53533 
53558 
53583 
53607 

53632 
53656 
53681 
53705 
5373o 

'53754 
"53779 
53803 
53828 
53853 

53877 
53902 
53926 
53951 

'53975 

'53999 

5 402 j. 
54048 
54073 
54097 
54122 
54146 
54171 
54195 
54220 

54244 
54269 
54293 
54317 
54342 

54366 

5439i 
54415 
'54439 

54464 

Cosines 


6^ 
59 

58 

g 

55 

54 
53 
52 
5i 

50 

49 
48 

46 
45 

44 

43 
42 
4i 

40 

39 
38 

36 
35 

34 
33 
32 
31 
30 

29 
28 

26 
25 
24 
23 
22 
21 
20 

19 
18 

\l 

15 

14 
13 
12 
11 
10 

9 
8 

I 

5 

4 
3 

2 
1 
0-57 




"0 u-io *" O "lO wi O oO oO 

vo 'i >o ^r + w w h n m 




If 


GO 

I 

H 



1 

3 

g 

3 



GO 

O 

H 
GO 

3 

O 



O 
GO 

I 

(-3 






(MiOQOH'fNQCOiONOlM'f 
Oi iClOO'^pI^opOOCNCt'T' 
IO IO LO IO IO O IO lO IO O O IO 








ON 


o:^ic>ooonnoooooooon 

OOH^WtlOCNQOOlOH 

occciOr^cMco^ippr^pp 
t^i^i^ccc<docbccdocbd> 




ON 



00 


COtMHOSC-fMOOOCOfiOH 
OC5C00T0Q0*C0Q0NNNN 
OO^ippb-oppcprHCqcprHip 

22222222222^222222222222 


O 

00 



0, 


qo w cq h X 1 >o M <M 

9HWM^lpCpONCpOOH 

b- t^- t>- t^ b- t> t"^ t*. r^ t^ r^- co 00 

cocococococcc^cocccocococo 








th h a c h 00 co n 

NO)CiOOHNMcp-T*ipOO 

r 1 -! rH rH 6 ~\ CM CM <Tl CM ffl CM CM CM CM 

cccocccocococooocococococo 


O 
vo 



10 


G;iOr-HQO-l*COfM'X^HNCO 
^ipOpi^cocepOOrHr-HCM 

c6 666c66onnnn 

CM CM CM CI CM CM CM CM CM CM CM CM CI 


O 


3- 


S O LC O -1^ ?M H C O CC N CO 

O ~* c. -r a ^r -. -+ 25 > 55 00 00 oo 
r^ cm cm si S3 rr -7 ip p p t- b- 

rHi Hi- < -H r It '1 1 i-H r If 1 r 1 1 1 
CM CM CM CM CM CM CM CM CM CM CM CM CM 


% 




ro 


CO^HOOiOiNQOfNOOMO 
QWNO-fMHOOlNOOO 
OOOOOOOHHHMNMSQ 

lbooooooooocboo 


O 

CO 





comcoctnhoooo^cco: 

O fM i* N O CM f N O h 1* O 3 
iO C5 O CO CD N N N N CO CO CO Cp 

0000000000000 

rH r IHr It 1 i 1 i I 1 1 r- It lr Ir IH 








OH-fOCOH>OX'OCM^O 

C H (M 10 -fi O N X 3 H CM CO i 

cm S3 S3 cc w K K ^* sp 7 + ? y 





^ CO 

1 

5 fee 




eo 




Latit 

zonta 
Differ 


iides, or Hori- 

Distances for 

ence of Levels 


5' 


m Latitudes, or Tlorizor 
1 3>egr. tances for Difference o 


tal Dis- 
f Levels 



90 








TABLE II. 






Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 


> 

w 

HJ 

pq 




P3 

PR 
1 1 

p 


e 
s 

H 
GO 
1 ( 

P 

H 

C 

s 

3 

w 

PS 


r/f 

P 
D 

1 t 

h3 


qq j% Latitudes, or Horizontal Dis- 
OO ee * tances for Difference of Levels 


3J d 

i 
z 
3 
4 
5 
6 

7 
8 

9 

IO 

ii 

12 

13 
14 

15 
16 

7 

18 

19 

20 

21 

22 
*3 
24 

^5 
26 

27 
28 
29 

30 

3' 

32 
33 
34 
35 
36 
37 
38 
39 
40 

4i 
42 
43 
44 
45 
46 
47 
48 

49 

50 

5i 

52 
53 
54 
55 
56 
57 
58 

60 


Cosines 
83867 
83851 
83835 
83819 
83804 
83788 

83772 
83756 
83740 
83724 
83708 

83692 
83676 
83660 
83645 
83629 

83613 
83597 
83581 
83565 
83549 
83533 
83517 
83501 
83485 
83469 

83453 
83437 
83421 
83405 
83389 

83372 
83356 
83340 
83324 
83308 

83292 
83276 
83260 
83244 
83228 

83211 
83195 
83179 
83163 
83147 
83131 
83114 
83098 
83082 
83066 

83050 
83034 
83017 
83001 
82985 

82969 
82952 
82936 
82920 
82904 
Sines 


60' 
59 
58 

? 

55 

54 
53 
52 
5i 

50 

49 
48 

46 

45 

44 

43 
42 

4i 

40 

39 
38 

11 

35 

34 
33 

3* 
3i 
3 
29 
28 

26 

25 

24 
23 
22 
21 

20 

19 
18 

3 

*5 

14 
13 
12 
11 
10 

9 
8 

I 

5 

4 
3 

2 

0*56 




O o O oO -> O 10 O *oO >oO 

SO iO<0 + + MN H ih M 

O 


I| 

If 


DO 

E2 

W 

O 



i 1 
P 



af 
S 
D 

H 

1 

w 

p 






t^OOOOiCiOiQOOOOOt^OiO^ 

OOOlM^OQOOtM^OOOO 

Qpi^i^pipTt<cpcpcqrHpoiCi 

OOQOOOQOOOGOQOOOOOOOOOGOOO 








ON 


OOi iCOCDCifM^t^QCO^OOO'l 
^^COqqrHrHppOTGpt^Cpp 






O 
OO 


T*GqCDCOOSlOCDC<J0003aOCO 

OJCOCOOMNH-^oOHiboOCT 

pppcpt^t>-pip*p^cpcp 

ocooooooocoo 



00 





58-707 
58-654 
58-596 
58-540 
58-484 
58-428 
58-372 
58-316 
58-260 
58-203 
58-146 
58-089 
58-033 







SO 


OiOW5l>.C2i (COiOt^OOCii 1 <M 
M(M(MHH0000500QONt> 

66666666i6Qffio6 




SO 





COOiKVHOCCOiOHNCOOJO 
pqpqpqpt^t-. pcpipipf * 

r^rHr^rHrHrHrHrHr^-lrHrHrHrH 








NNWCTOOOOMHOCDt)*(M 

Tf H OO O ^1 OO 'O (M O O 'M C3 O 

xpip^^"^W0p0pCqC<J<NrHrH 

cocqcocooococococococococo 


I 





oooNaiOHO(Moo^o>oH 

OWH00CD^HC5O-i<(MC:N 
HHHOOOOQGiQffiOOOO 


O 
CO 


O 


cooono-^oo<mcooonh 

NiO^(MHQNO^(NHaoO 
1 IrHr- Ii IHr IHHHr- 1 1 1 1 1 1 1 





O 
M 


l^OirHCOCt^05^HCOlOt^OOO 

OONNOiO^MMWHOOO 

<<dD<oocbcb(cb(oodocb 





11 

|3 


*b "OO o O <flO >oO w-10 >oO 
hi m c* c4 co co rj- 3- u-> u->vo 
O 

CO 








Departures, or 
Difference of Levels 


5 


b De ^ ' Levels 















TABLE II. 




91 


Departures, or 
Difference of Levels 


CO 

P 

> 




h-i 

Q 

O 

I 

P 

H 

1 

P 


OO Be _ Departures, or Difference of 
Ajeveis 


33 o' 

2 

3 

4 
S 
6 

7 
8 

9 

IO 

ii 

12 

13 
14 
15 
16 

7 
18 

9 
SO 

21 

22 

*3 
M 

25 
26 

27 

28 

29 

30 

31 

32 

33 

34 
35 
36 

37 
38 
39 
40 

41 

4 2 

43 

44 
45 
46 
47 
48 
49 
50 

5i 

52 
53 
54 
55 
56 
57 
58 

g 


Sines 

54464 
54488 
54513 
54537 
54561 
54586 
54610 
54635 
54659 
54683 
54708 

54732 
54756 
54781 
54805 
54829 

54854 
54878 
54902 
54927 
54951 

54975 
54999 
55024 
55048 

55072 

55097 
55121 

55145 
55169 

55194 
55218 
55242 
55266 
55291 
55315 

55339 
55363 

55388 
55412 
55436 
5546o 
55484 
55509 
55533 
'55557 

55581 
55605 
55630 
55654 
55678 

55702 
55726 
55750 
55774 
"55799 
55823 
55847 
55871 
55895 
55919 
Cosines 


6c/ 
59 
58 

% 

55 

54 
53 
52 
5i 
50 

49 
48 

46 

45 

44 
43 
42 
4i 

40 

39 
38 

11 

35 

34 
33 
32 
3i 
30 

29 
28 

26 
25 
24 
23 
22 
21 
20 

19 
18 

\l 

'5 

13 
12 
11 

10 

9 
8 

I 

5 

4 
3 

z 

1 
0*56 




O >^0 >oO ^0 wio oo *> O 

O 
VO 


i 

|3 


co 

1 

ft 

O 

H 
O 

a 

i 



CO 

O 

H 
CO 
M 

P 

1 

1 

a 


w 

a 



of 
W 

I 
| 






^CDGOOr-HCq^iQCOt^OOCia 
QOOtMiONOHCCiONOH 

th^m'^m^h 7* ta g >b b >b ib 10 b 

ujooiooioioiooiaoioio 





w 






NNNOiQ^05(NHOOS 
HfMWtiOONOO^QHHiM 
PrHC-lCpThipOt^OOOrHC^CO 

66qc5 666q6666 




ON 




00 


HOOCOHOOiOfMOONOO 

ipcpb-CpCiOrHCqCp^ipOt^ 

^ji ^^ ^1 ^1 '^1 ^1 Tji ^4 ~^i ^i ^1 ^j< "^t 


O 
00 





iOO>OOCOHOOOOt|(ON 
(M h Ci * O O 0: (M O 05 N 5 il 
H^CNM^lpCNQOGOqiOH 

cococococococccocococococo 







vo 


HiOXOMOO(MiiNO(M 
NiO(MGNi*H]OOnONiO 

CNxxooHH^oo-^Ttfio 
oococococococococococococo 




VO 





COOiOHNKCliOHNoOOO 







3- 


O^MfMOONOTJi^HOX 
X W X ^ 'X CM l^ (M b- <>} 1^ . 1 CO 

t>xxoaooHrt(Noqwc: 

rH 1^ rH rH rH (f 1 jq 'M (f 1 ff 1 (jq (fl (jq 

<MCq<MCM<?q<M<M<M<MCNCNCM<M 


O 

CO 


OOtMOiONX^HNMOO 
MNH'tXIMOCi^OO-^N 

cpcc^^^ ipipippcpb-b-b- 

0066666666660 




to 





WNHOO^OCOSHOOtH 

OH^OOH^OMmKOX 
OOOOiCCpOOOOHHHH 




M 





OOHWiONCiHTfOQOOW 
^W5NXGJQhi^OOXC5 

ibobibibibbibibbbibib 


O 


^ fcJ3 
ee g 



"O *o O oO voO >oO oO oO 
w m c* rt co co <j- <$- o wr^so 

O 

CO 
CO 




51 


r* Latitudes, or Horizoi 
3 ^ tances for Difference 




Latil 
zonta 
Diffe 


udes, or Hori- 
1 Distances for 
'ence of Levels 


ltaJ ] 
f Le 


Dis- 
vels 



92 








TABLE II. 






Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 


LATITUDES, OR HORIZONTAL DISTANCES FOR DIFFERENCE OF LEVELS 


<\A Latitudes, or Horizontal Dis- 
Otc es * tances for Difference of Levels 


34 o' 
I 
z 
3 
4 
5 
6 

7 
8 

9 

10 

II 

12 

13 

14 
IS 
16 

17 
IS 

19 

20 

21 

22 

23 
24 
25 

26 

27 
28 
29 
30 

31 

32 
33 
34 
35 
36 
37 

39 

40 

4i 
42 
43 

44 
45 
46 

47 
48 

49 

50 

5i 

5* 
53 
54 
55 

56 

57 
5* 

6o 


Cosines 
82904 
82887 
82871 
82855 
82839 
82822 

82806 
8279c 
82773 
82757 
82741 
82724 
82708 
82692 
82675 
82659 

82643 
82626 
82610 
82593 
82577 
82561 
82544 
82528 
82511 
82495 

82478 
82462 
82446 
82429 
82413 

82396 
82380 
82363 
82347 
82330 

82? 14 
,82297 
82281 
82264 
82247 

82231 

82214 
82198 
82181 
82165 

82148 
82131 
S2115 
82098 
82082 

82065 
82048 
82032 
82015 
81998 
81982 
81965 
81948 
81932 
S1915 
Sines 


60' 

59 
58 

1? 

55 

54 
53 
5* 
5i 
50 

49 

48 

46 

45 

44 
43 

42 
4i 
40 

39 
3 

36 
35 

34 
33 

32 

3i 
30 

29 
28 

26 

25 
24 

23 
22 
21 
20 

19 
18 

3 

15 

14 
13 
12 
11 
10 

9 

8 

I 

5 

4 
3 

2 

1 
o-55 




O "1 O J-iO >^">0 "lO *oO *oO 

vo "0>0 TJ- ^- m to M tf w w 

O 


If 

li 


p 
> 



O 
fe 

P 



w 
PI 
B 

H 

Pw 
P 






*(MHN0WONi0M000 
OCT^ONOHM^OQOOH 
CO N O ip -^ f M CT H O C5 O 
CM<MCM<MrM<^CMCMCMCMCM^-lrH 
QOOOOOOOGOOOQOOOOOOOOOOOOO 





M 




ON 


^Ot^COCSiOCMI-^CMapTjHOOCO 

H^OOH^Na(M^N05(M 
OiO^MMCTHOOOQONN 


O 

o\ 


O 

00 


WCOWNINOO^OOCqOQOW 
9CNHTHOCOt>NCpOip 

oooooibicb*bbibbb 

000000000000 


O 
00 





COlOH"^0HWON0 
WNHOO'+OOWt^HiO'^ 
pGiOQ0Qpt^OO>0p^CCCp 








(MM^iOONOOCOCOO 

^^Tt(-t^-t^ 

^OOOO^^CpO^CMCMrHrH 






SO 


O 
10 


(NHO00NC00;(NHt> 

iOHN(NGO^OOCTQO^5 
*f9NCNrtHOOC5 

rHrHr^rHrHrHrHr^r^-lrHrHOO 
^J1 ^1 ^1 ^H ^i TJi ^J1 ^Ji ^H ^H ^H ^Ji ^^ 





I 


(MOT)fHCOiO(M0050 
OW05OMCOe:OOKOO 
HHpOOOOOqOOOQONN 
cbrewccroeMCMCMeMrMCMCMrM 

cococococococooocococococo 


% 


O 
CO 


HNCTNCOOO^O^lO^ 
N^(MNT)iNNi((MN 
QOCOCONNSNOOOOipip 

^J1 *^4 T71 *t-jH ^p T-p "*-^ -^H t^H T"f^ "^4 ^r^ "v^ 

CMCMCMCMCMCMCMCMCMCMCMCMCM 




CO 





HT)(QOiniOOCOOO00)Q 
OOO^COHQQOO^COHOOO 

0000000000000 








0(M-*OCOOHW100000H 
OCONOiO-t^r^HOOO 

cm cm cm cm cm cm cm cm cm cm cm cm i-h 

cbcococbcccbcbcbcbcocbcfec 


O 

H 


li 
i! 

go 


^O >o O >^o w-io u-> O u-> ""> O 
w 1-1 rt H M w ^ <^ io iovo 

CO 








Departures, or 
Difference of Levels 


5. 


D Deer - 'Level's 















TABLE II. 






Departures, or 
Difference of Levels 


> 

ft 

H 

5 
W 

i 

P 

O 

of 


p 

H 

W 

ft 


Oyi D Departures, or I ;i 1 
O^E *' Levels 


34 o' 

2 

3 

4 
5 
6 

7 
8 

9 
io 

ii 

12 
13 
14 
15 
16 

7 

18 

19 

20 

21 

22 

23 

24 

s 

26 

27 
28 
29 

30 

31 

32 

33 

34 
35 
36 

37 
38 
39 

40 

4i 
42 
43 
44 
45 
46 
47 
48 
49 
50 

5i 

52 
53 
54 
55 

56 
57 
58 

60 


Sines 

'559*9 
'55943 

559 6 7 

56016 
56040 

56064 
56088 
56112 
56136 
56160 

56184 
56208 
56232 
56256 
56280 

56304 
56329 
56353 
56377 
56401 

56425 
56449 
'56473 
56497 
56521 

56569 
56593 
56617 
56641 

56665 
56689 
56712 

56760 

56784 
56808 
56832 
56856 
56880 

56904 
56928 
56952 
56976 
57000 

57024 

57047 
57071 
57095 
571 19 

57143 
57167 
57191 
57215 
57238 

57262 
57286 
57310 
57334 
57358 

Cosines 


60' 
59 
58 

11 

55 

54 
53 
5* 
5i 
50 

49 
48 

46 
45 

44 
43 
42 

4i 

40 

39 
38 

36 
35 

34 
33 
3* 
31 

iL 

29 
28 

26 

*5 

24 
23 

22 
21 
20 

19 
18 

\l 

15 

14 
13 
12 
II 
IO 

9 

8 

1 

5 

4 
3 

2 

0-55 




*o O *> O o O *AO ^o w> 

NO IO ^- ^- W M N 11 M 




H 


w 

ft 

Ph 
O 

O 

3 

i 

ft 
O 

m 

ft 


< 

1 1 

ft 

ft 

<1 

H 
fe 

O 

N 
H 

g 

O 

O 

GQ 
ft 
ft 

B 

H 

H 

ft 






OOOOHHHQOOOOOOO 
r-H + O X O (M 'f O X' Q i-h CC O 
COH(NtJ(iOCONOh Ox CO 






1 

On 

: 


NO'fdOOO^tMONiON 
(MM^iOOCNOOOOOHiM 
* 9 O N 00 O O H cp ^t p 9 

OOOOOOOrHrHrHr^Hf^r^ 

lOiOiOWiOiOiOiOiOiOiOiOO 




ON 



00 


>0(M00iOO(M00'*O'0HO 
C0M(N(M(NHHOOOOO'X 

t^xqsprHCvicp^iccpot^cp 

3 3 3 l ^ ^ iS ^ L ' IS iS l ^ IS 


O 
00 


O 


W00(MOO^0Cl(MOQ0O 
TtHMHOOOO-tCOHOGCSO 

Hcqmoj^ipoNcpoooH 

66605666666666 
oococococococococococo^"* 







NO 


CT^OQOONiiOOOQHCClO 

lONOO^HOtHOOOt r- -1 

00l>OOaOHi?l(M05^ 

ocoocococccocococcoococoto 


O 

NO 


O 


0000000000000 

OG^X-*OOC^X~*OOr-U^ 
OOOHWWCpWfipipOO 

t^xxxxxxxxxxdbx 


O 



* 


Oi-nOrHOOi-OOiOO-^O-H 
co^^iOiOCOOt^t^qcqpcpO 
(^ ^ (N cq ^ -fq <jq di (fq 61 <^i (fi <>i 

(N<M(N(MCTN^(M<M(M(N(NCq 



* 





OiMQO^OCOlMQO'lOOHN 

NHijiooiMiOOINCJOMNO 
NQOOOaDCQQOOHHHIN 

rHi 1 1 Ii ! 1 1 1 lr- It IHHHr- It 1 





O 


<*#00<NOOtHX<NOO"*Xt-h 

OOOKOOOOIMONO'M'i'N 


O 


O 


cq-^oxoffq^oxQ^i-^o 

lOOOOOfflOSt>NNN 

lbibibiboooiboibooo 


O 


B OD 

s-3 


"o >oO >oO >flO >flO >o O *oO 




Latitudes, or 
zontal Distanc 
Difference of '. 


Bori- 

esfor 
^evels 


e c Latitudes, or Horizon 
00 Deff * tances for Difference of 


tal Dis- 



94 








T 


ABLE II. 






Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 


O 

W 
O 

w 

i 

i 







H 

m 
1 i 

P 

i 




w 



off 

w 
p 
p 

H 
t i 
H 
<1 
h3 


qk Latitudes, or Horizontal Dis- 
OO ^ tances for Difference of Levels 


35 o' 

i 

2 

3 
4 
5 
6 
7 
8 
9 

10 
12 

n 

14 

15 

16 

17 
18 

19 

20 

21 

22 
23 

24 

25 
26 

27 

28 

29 

3 

31 
32 

33 

34 
35 

36 
37 
38 
39 

40 

4i 

42 

43 
44 
45 
46 
47 
48 
49 
5 

51 

52 
53 
54 
55 
56 
57 
58 

60 


Cosines 
81915 
81898 
81882 
81865 
81848 
81832 

81815 
81798 
81781 
81765 
81748 

81731 
81714 
81698 
81681 
81664 

81647 
81631 
81614 

81597 
81580 

81563 
81546 
81S30 
81513 
'81496 

81479 
81462 
81445 
81428 
81412 

81395 
81378 
81361 
81344 
81327 

81310 
81293 

81276 
81259 
81242 

81225 
81208 
81 191 
81 1 74 
81157 
81 140 
81123 
81106 
81089 
81072 

81055 
81038 
81021 
81004 
80987 

80970 
80953 
80936 
80918 
80902 
Sines 


60' 
59 
58 

11 

55 

54 
53 
52 
5i 
50 

49 

48 

46 

45 

44 
43 
42 
41 

40 

39 
38 

36 
35 

34 
33 
32 
31 

3 

29 

28 

11 

25 

24 
23 
22 
21 

20 

19 
18 

3 

15 

14 
13 
12 
11 

10 

9 

8 

i 

5 

4 
3 
2 
1 
o # 54 




"0 *o O *o O *A O w-> "O O *oo 

vo >o >o <i- ^ w m H M m m 

O 


II 

if 


QQ 

a 



H 



2 

F 

Ph 
i i 

P 

& 
O 

w 

m 

B 

P 






iO<NQP^OCDHN(MN(nN(M 

HM^OMOH^^ionqoo 

AlrH^-lrHrHrH^H-Hr^r^-lAlOO 

GOOOGOGOOOQOOOOOQOOOOOOOOO 





M 




ON 









00 


ip-tCdfMqHHOOOOONN 

b >~ >~ ibibio-*i(^i(^ 




00 


O 


O(N^5ONC0C5QOOHH 
'*Q0(MC0O'tQ0NOHi0C5W 

wcqq^rHrHcppciQpqpb-cpp 
10 o 10 o >o o o 





O 

vO 


05OC5000000OO0ii(MH 
^OOOOXX'NNOOLOIO 
2322222222222 




VO 


O 


NOTti(MOQOOCOHQOOnH 
iOHNWC5^00(MNC0055 

6606666666666 





% 


OOOOCDCqoOrtiHNCOOlOH 
COMOOWOOWaOtMOO 

cococococococococococococo 


% 




CO 


*<*CS^CS^CDCOCOCOt^<M<Pi-i 

TJ1 *^4 "^71 Tp """T TJ1 *^p TJ1 TJ* T^ ^^1 ^ji Tji 




CO 





WOOnOOiMiOQOH^SO 
00 O IO CO r- ICiOOCO^COr- 1 OS 00 

6666666666666 








HWlOOOOOHCO^CONffiO 
C300NOOOt)(00(NHCOO 

r 7 Hr T Hr r lr r lr 7 lr r ,r r lr r lr r ,, ' > ' 
obobccbcobcbcobaocdoob 




M 


11 

if 


V <D oO >oO u-io >flO w->o *o O 
m m H M wm + + vi o>o 
O 

CO 






Departures, or 
Difference of Levels 


5 


* 8 "' Levels 


iiice 


ox 



TABLE II. 



90 



Departures, or 
Difference of Levels 



35 o' 

z 
3 
4 
5 
6 

7 
8 

9 
io 



Sines 
573S8 
57381 

S74S 
574*9 
57453 
'57477 
575oo 
57524 
57548 
57572 
"5759 
57619 

57667 
57691 
577H 

57738 
57762 
57786 
57809 
57833 

57857 
57881 
57904 
57928 
57952 

57975 
57999 
58023 

58047 
58070 

58094 
58118 
58141 
58165 
58189 
58212 
58236 
58260 
58283 
58307 

58330 
58354 
58378 
58401 
58425 

58449 
58472 
58496 
58519 
58543 
58566 
58590 
58614 
58637 
58661 

58684 

58708 
58731 
58755 
58778 

Cosines 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 



35 Be *- 



Departures, or Difference of 
Levels 



v> O v-iO ^ O w-io ^n O ^0 

VI l^l ^ ^- W M fl fj M II 

o , 



>o N O H ?: io N QO o on o i>. 



(M w co ^ o o co 1^ t* -/j 35 35 o 

rHT^rHrHCh01Cq(^Cq(?qC<JCq(n 

OOiOOiOOOiOiO0OiO0 






3 



O^NOCOOOOliONONO 
IO CO H O 30 O -^ JO H Ci X tD -fi 
1 KNCOTJHOCOt^OOaOO! 1 

66666666666hh 



H 00 O W O N "* H X O Ol T- O 

Tt^ioOONOOOOOHHiM 

^^^^^^^TtHoooo 
eococococococococococococo 



0000Q000X00OOOC1CJO35 
^(NNN^(^(MGNiN<N(NiM!Cq 



COHCOOCOHOOOCOON^H 
^ 05 00 00 CO GO Ol t^ Ol t* r-H CO 11 
OQOOHr- 1 <c^ <C^ CO CO TiH O 

<fq<^cbcbcbcbcbcbcbcbcbcbcb 



NMO^OO^NlMNCOQOil 

o * n h 10 oo ^ 10 a o) c r. co 
w w n cp cp cp -^ -*h o lo o ep 



r-tocicot^OTjiaoi-iogogjco 

NOHTdOOr- 1 CO O O JO O 
ijTtHOlOOOOOOONNN 



OOOOHJOiONOHCHOX) 
W^ONOOQOHCOiiCON 
NNNNNNCCCpqpOCXX V 



11 

J z 



o w-io "> o oo vq oo v-,o 



c * Latitudes, or Horizontal Dis- 

04 De8r# tances for Difference of Levels 



96 








T 


ABLE II. 






Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 


m 

> 




Pi 
W 

& 

H 

A 

M 


Ph 

CO 

W 

O 

H 
W 
ti 

fi 

1 




W 

Pi 


w 

P 
p 

H 

h- 1 

\ 


n/j _ Latitudes, or Horizontal Dis- 
OO es ' tances for Difference of Levels 


36o' 

2 

3 

4 
5 
6 

7 
8 

9 

IO 

ii 

12 

13 

14 
IS 
16 
17 
18 
19 

20 

21 

22 
23 

24 
as 
26 
27 
28 
29 
30 

31 

32 

33 

34 
35 
36 

37 
38 
39 
40 

41 

42 

43 
44 
45 

46 
47 

48 

49 

5o 

Si 
5* 
53 

54 
55 

56 

57 
58 

60 


Cosines 
80902 
80885 
80867 
80850 
80833 
80816 

80799 
80782 
80765 
80747 
80730 

80713 
80696 
80679 
80662 
80644 

80627 
80610 
80593 
80576 
80558 

80541 
80524 
80507 
80489 
8047a 

80455 
80438 
80420 
80403 
80386 

80368 
80351 
80334 
80316 
80299 

80282 
80264 
80247 
80230 
80212 

80195 
80178 
80160 
80143 
80125 

80108 
80091 
80073 
80056 
80038 

80021 
80003 
79986 
79968 
79951 

79933 
79916 
79898 
79881 
79864 
Sines 


6^ 

59 

58 

5 l 
56 

55 

54 
53 
52 
5i 
5o 

49 
48 

4 l 
46 

45 

44 
43 
42 
4i 
40 

39 
38 

36 

35 

34 
33 

32 
31 

30 

29 
28 

26 
25 
24 
23 
22 
21 
20 

19 
18 

3 

15 

14 
13 
12 
11 

10 

9 

8 

I 

5 

4 
3 
2 
1 
o'53 




O 100 o O >oO 10O 00 >00 

vo loio^-^mnn c hi hi 



CO 

10 


11 


GO 

w 
p> 
m 

a 



Pi 

1 

s 





of 

p 

p-1 






iMOO-^oOiMOQNiOQOHM 

O H CO Tt< IO t> OOO H (^ O IO O 

C5iX)NiCfMCTCqHOC5QO 

ooooooooooood) 

OOOOOOQOQOCOQOOOQOQOOOt^t^ 









ON 


CM-fNOCqiONOH(MTHN 

HCOCOOOW^OOHMiON 

t>oipip-^ep(>iMHoaicp 
cq "h <fi cq oq oq cfq ch cq cq cfq i-h rH 
l>i>t^i>t>.t^i>.t^i>.l>.t^fc^i>. 




ON 



00 


(MW^ioOOOQOOOOHO 
(MOQOH-tNOnNOWCO 
NffiipiprJiMcO^HHOffiQO 
^^^^-^-ii^-iw^-^cbcb 




00 





HHHHHOOOflOSSOil 
M N -J 10 rr N O tJ 00 (M O O 
00>O^CO01(NHOOOQ 








HOOOCOICMNONIOCOHOO 
TtfOWOOOOOOWNINIXMNH 
lp-^-^MMWNHHOOqJO 

ccobobrcb&aDc&dbb~t^ 




VO 


O 
10 


HOOLO(MOOW050(MOiOH 

^<tMNCTHHHOOO01 
OOOOOOOQOOOOOi 
"^ "^ '^ ^H tJH "^H '^ *^ '^ *^ Tt* CO CO 





O 


h(mqowt)(ooou;oo 
w m .'1 w h h h o o o c5 o 

(?q^(JqCq<fq^(NCq(NCN(?qrHrM 

cococococococococococococo 








HLOOMN(M0-^NH00 
NT)iHOOTt(H050e50QOiO 
CT^^rHrHrHrHOpppCiO 
-*H "^ ""+ 1 "^f "^ "^f "^ "^ "^ tJ^ tJ< CO CO 
CNOq(MG^(MCq(MCMOq(M(N(MCq 




c* 





ococooi(?q^t>0<?qioouoco 

rHrTirHrHrHOpPPPPPP 




H 





OOONOiO-HWCCfMHOQQO 

ccdbcbdbcdbccbdbdbt>i> 




HI 


li 


"o ^ O ^ O mo oO 100 w-o 

HI HI N M fOCO^T^-Wl IOVO 






T~i TV-ff 




Departures, or I 
Difference of Levels 1 


sr 


5 es: " Levels 















TABLE II. 




97 


Departures, or 
Difference of Levels 


>A 

g 

h 




1 

3 



1 1 

P 

M 



m 

s 

1 

w 
p 


q/j _ Departures, or Difference of 
OO De * Levels 


j6o' 

i 

2 
3 

4 
5 
6 

7 
8 

9 

IO 

ii 

12 

*3 

14 
15 
16 

17 
18 

*9 

20 

21 

22 
23 
24 
25 
26 

27 
28 

29 

30 

3* 

J2 

33 

34 
35 
36 
37 
38 
39 
40 

4 1 

42 

43 
44 
45 

46 

47 
48 
49 
5o 

5i 
52 
53 
54 
55 
56 
57 
58 

60 


Sines 

58778 
58802 
58826 
'58849 
58873 
58896 

'58920 
58943 
58967 
58990 
59014 

59037 
59061 
59084 
59107 
59131 

59154 
59178 
59201 
59225 
59248 
59272 
59295 
593i8 
59342 
59365 

59389 
59412 
"59435 
'59459 
59482 

59So6 
59529 
59552 
59576 
59599 
59622 
59646 
59669 
59692 
597i6 

59739 
59762 
59786 
59809 
59832 

59856 
59879 
59902 
59926 
59949 
59972 
59995 
60019 
60042 
60065 

60088 
601 1 2 
60135 
60158 
601 8 1 
Cosines 


60' 
59 
58 

11 

55 

54 
53 
52 
5i 
50 

49 
48 

46 
45 

44 
43 
42 
4i 
40 

39 
38 

S 

35 

34 
33 
32 
3i 

30 

29 
28 

26 

25 

24 
23 
22 
21 
20 

19 
18 

\l 

15 

4 

13 
12 
11 

to 

9 
8 

I 

5 

4 
3 

2 
1 
0-53 




O ^ O *o O 00 ^>0 oO 10O 

VO V)lOi + MMtl M M m 




if 

IS 


m 
A 
H 
> 

a 

O 

3 

% 

P 

g 

W 
O 
K 

1 1 
P 

O 
N 
1 i 

a 



a 

es 



of 
H 
P 

P 

s-< 
1 1 
H 

3 






000-^HQOiO(Mfl50(MC5iOH 
N C H CO rfl O "JO O H ^ -t 3 00 
*>- X O -71 ?1 w Hh ip t^ qp p r^ 

30O)6Qa6666di665 

KJiOiOiOOCiOiOiOiOiOSO 








on 


O O ri H C^l ?M W TO "f -^ IO IO 

ooHwcoi(iooNa)CiOH 

lOiOiOiOiOiOOifliOOiOOiO 






00 


WNHW5C5(MOOWOO<M0 
(MHHQOiaONNOOOTt* 
prHCqcpcp-^ippt^QOPPrH 
NNNNNNNNNNNQQob 




00 





ionht)(oooohco^os 

^(MOONiOCOHCOOOiliM 

rH(NW<TOTtlipipi>.CpqpC5prH 






vo 


NQOOOOOOOiOGOOOO 

ib 10 10 10 ib ib 10 ib ib ib 

cocococococooocococococooo 




vo 


O 


CiQOOiQ't*CO'-lQGOO'+COr-l 
QOtOOfMOO^OiOHNMO 
cp-^ipipcONopaDQr. OO 

6po6c5oooc3Qo66 
<M<MC^CMd<M<?qcq:>jcqcqcoJ5 





% 


Hooio^oofMOoroooe: 

H IO O C3 ^ O ^ * W X' W N 

ip 5j 9 9 9 t> n op 00 9 9 

WMWMMcbo:?OM-+^ 


% 





^O^O^OiOOiOOiOOrd 

99NNi>opopop9a!00 

t l 1 1 il 1 IHr- 1 i 1 iH i 1 i Ii 1 i- i 1 




C<"> 


O 


COOCOOOOOCOOMO 

NN0000000000OO05OOO 
rH^HrHrHrHrHrHrHr^lrHrHCJq^ 





O 


OOOHOJIONOOO(MM>ONOO 

NOOHPlM-tiONQOQOH 
QOQO99O9OOO9999 

ibibibibibibibibibibiboo 





il 

|3 


^O "o O O *o O *o O v->0 ""> O 
ih w c* c* co ^ <^- wn "TO 






Latitudes, or ] 
zontal Distanc 
Difference of I 


lori- 
es for 
revels 


eq Latitudes, or Horizon 
OO Deg >* tances for Difference 


tal Dis- 

f Levels 



98 



TABLE II. 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 



37 o' 

i 

2 

3 
4 

5 
6 
7 



Cosines 
79864 
79846 
79828 
7981 1 

79793 
79776 

797S8 
79741 
79723 
79706 
79688 

79670 
79653 
79635 
79618 
79600 

79583 
79565 
79547 
79530 
795 1 2 

79494 
79477 
79459 
79441 
79424 

79406 
79388 
7937 1 
79353 
79335 
79318 
79300 
79282 
79264 
79247 
79229 
7921 1 
79193 
79176 

79157 
79140 
79122 
791 05 
79087 
79069 

79051 
79033 
79015 
78998 
78980 

78962 
78944 
78926 
78908 
78890 

78873 
78855 
78837 
78819 
78801 
Sines 



4 
3 
2 
1 
0-52 



Departures, or 
Difference of Levels 



I 

C 

n: 

9 
o 
W 



c 

CO 

P 

P 

H 

H 

3 



37 



Degr. 



Latitudes, or Horizontal Dis- 
tances for Difference of Levels 



TO <j-iO oO *o O >oo *o o 

wi<o ^ ^ to w rt N w m 

o 



COOOOOfM-^ONQOOOOH 
ONOOOHOqco^COOQOOO 
OOl^OCpipTjHCpCNrHpCSGpa) 



N0005OH(MH(M(NCTNHH 
NQH^OOOOIM^OOOO^ 
C0t^l>-CCiO^Tt<0tiC<li 1000 



OHOOOaoDOiO^!MH 

ONkoooowoaooooHTii 

Qpqpt^O'PO-^OpcpS^rHrHp 



^mcqoooNTiicoHoooMH 

O^OOC^OCiOOt-O^OOCNiX) 

Oiqpt^t^cppip^opcpqqq<jrH 



QOXJWON^HOOlOHQO^H 
HOHOO"CO-*NitQ0WQ0 



HOO^O(MNCOC5^0>00 
COOO^OWSHCOtMNKO^O 



CiOiqpqpcpt^b-cpcppippo 

rHrHrHpHrHrHrHrHrHrHrHrHrH 

oococooococooococococococo 



CiMOO^NO^NH-^NO 
OCOOOOiONON^OqQOT)( 

OffiOOOOOOOOONNNCOCOO 



COICOOO(MONC5(M^OCOO 
NtOMCTOQOOilMHQNO 
ppCDqigiopqpGpqpopt^t^t^ 



OOOOOHCTMiOCONQOOiO 

oot>oco"C^n(NHOoooo 



II 



52 Deff - 



Departures, or Difference of 



Levels. 



TABLE II. 



90 



Departures, or 
Difference of Levels 



37 o' 

z 
3 
4 
5 
6 

7 
8 

9 

10 



Sines 
60181 
60205 
60228 
60251 
60274 
60298 

60321 

6o344 
60367 
60390 
60414 

60437 
60460 
60483 
60506 
60529 

60552 
60576 
60599 
60622 
60645 

60668 
60691 
60714 
60738 
60761 

60784 
60807 
60830 
60853 
60876 

60899 
60922 
60945 
60968 
60991 

61014 
61038 
61061 
61084 
61107 

61 1 30 
61153 
61 176 
61199 
61222 

61245 
61268 
61291 
61 3 14 
61337 

61360 
61383 
61406 
61428 
61451 

61474 
61497 
61520 
61543 
61566 
Cosines 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 



37 



Departures, or Difference of 
Levels 



o 



k->0 >o O ^ O "> O *oO **"> O 



HOO^ffilOHOHNflNH 



OOOOOOOOi IrHt I 1 I r- 1 

0000000000000 



5c 

i I CM 



**'* ii i< t)( tji t)( -+ 10 10 o 
iOU5OOiOW5iOiO>OiO0OiO 



U5Q0HWOOHWONOHC0 
^CO(NHOOC500N&OiO 
H(NW*OONNQ0ffiOH(N 



N00C5H(M!MC5^i05OO 

O00NOMHOt>10C5rH 

rH^^co^ipoot^cpop 
cq c-i <?q cq <ri cq cq <?q cq o-i <fi 00 



C5QQOONOOIOt)((MHO 
ONirtOOiatMOOWONI* 
rHrHCq0pcpTtiOpipt>QpCpCi 

cocococococococococccococo 



HONi0NO00O05HOiOC0 
O-^OO(M00C5Q0HO^C0 

0000000000000 
cococococococooocococococo 



05OiOCTQ0^ONWOOHO 
OHH(M(MC5C005-^'^0>OC' 
<MCqCM<M<MCqoqG>lGN<M<N<MCM 



"^O-^O 



,oo<MOO(MOQe:ogeoN 

OOfHrlH^(Nqqe5 05^f f 

(cbcbcb(cccccb((aDdDa) 



OOWCDO(M5(X)H^ISOW 
MOOOOfNWNOtM^OffiH 
OOOHHtrlHH(>l(N(N!NC5 



00 O H 05 -^ O CO 

HCS^IOONCO 1 - 

OOOOOOOOHHHHH 



?3 



"o viO > o **> o oO <j-iO "> o 



52 



Latitudes, or Horizontal Dis- 
De8r " tances for Difference of Levels 



100 



TABLE II. 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 



38 o' 

z 
3 
4 
5 
6 



Cosines 
78801 
78783 
78765 
78747 
78729 
7871 1 

78693 
78676 
78658 
78640 
78622 

78604 
78586 
78568 
78550 
78531 
78514 
78496 
78478 
78460 
78442 

78423 
78405 
78387 
78369 
78351 

78333 
78315 
78297 
78279 
78261 

78243 
78225 
78206 
78188 
78170 

78152 
78134 
781 16 
78098 
78079 

78061 
78043 
78025 
78007 
77988 

77970 
77952 
77934 
77916 

77897 
77879 
77861 
77843 
77824 
77806 

77788 
77769 
77751 
77733 
"777 1 5 
Sines 



0-51 



Departures, or 
Difference of Levels 



38 



Latitudes, or Horizontal Dis- 
ff " tances for Difference of Levels 






HH(MSqHHHOC5QQNffllO 
OHNMTJ*Ot>N0005OH 

t^t^t-t>.t>.t>-i>.t^ t>. > i>- t~- i>- 



6666666666660 



HONOMH 
^ O Ci !M iO 00 - 
OQqDQONffiOLO^MOONH 

co 6* 6* <fi & i 6* <h 1 <^ 1 cn <ri ^ 



't^qohio05<NCOO 



<-* t lO <M 

f7-ipoc:ciopb~b-cpioip^"^ 



HOCOOlOHNNNMOO-t<0 
00(MNHOHiCO-^OW00(M 
(^(TqrHrHppciCiqpt^t^cpcp 
NNNNNN6066666 



OiOHOQiOOiOO-^oocON 
0OHCO?iNMCOWO'fQ0 

^wspffq^HHOOooQcp 
666666666obobobcb 
cooococococooocococococooo 



ip^^^CpOOCO(^J<?<lrHrHrHp 
1 lr IHr- IrHrHrHrHrHrHrHrHrH 

cococococococococococococo 



^HCOOWONOiM03-<#H 
<M<Mq<N<nq<M<M3q<Mq(M 



OfN^COCCON^OOOOlHCO 
^(^OOONkOWHOiNCOTH 



OHCqW^lOCDNXOOHH 
' iJ(M(NHO05 0100N 
coooqpqpopt^t^t^t^ 



o <flO >oo ^o *n o <> o >oo 

IH w N r) t*"> to t^- rj- U-> i^\o 

o 
00 



51 De - 



Departures, or Difference of 
Levels 











TABLE II. 


101 


Departures, or 
Difference of Levels 


m 
> 

ft 

O 

g 

O 

9 
p 

t * 

p 

M 



1 

H 

p 


OO _ Departures, or Diftere 
OS De &' * Levels 


nee of 


j8o' 

2 

3 
4 
5 
6 
7 
8 
9 

IO 

ii 

12 

14 
*5 
16 

17 
18 
19 

20 

21 

22 
*3 

24 

*s 

26 

27 

28 

29 

30 
31 

3* 
33 
34 
35 

36 

37 
38 
39 

40 

4i 

42 

43 

44 
45 

46 

47 
48 
49 

50 

5 1 

52 
53 
54 
55 

56 

57 
58 

60 


Sines 
61566 
61589 
61612 
6163s 
61658 
61 68 1 

61704 
61726 
61749 
61772 
6179s 
61818 
61841 
61864 
61887 
61909 

61932 
61955 
61978 
62001 
62024 
62046 
62069 
"62092 
621 1 5 
62138 

62160 
62183 
62206 
62229 
62251 

62274 
62297 
62320 
62342 
62365 
62388 
6241 1 
62433 
62456 
62479 

62502 
62524 
62547 
62570 
62592 

'62615 
62638 
62660 
62683 
62706 

62728 
62751 
62774 
'62796 
62819 

62842 
62864 
62887 
62909 
62932 
Cosines 


60' 
59 
58 

U 

55 

54 
53 
52 
5i 

50 

49 
48 

46 
45 

44 
43 
42 

41 

40 

39 
38 

36 
35 

34 
33 
32 
31 

30 
29 
28 

11 

25 

24 
23 
22 
21 

20 

19 
18 

\i 

15 

14 
13 
12 
11 

10 

9 

8 

I 

5 

4 
3 
2 
1 
0-51 






O flO ^ o o O o O O 
VO "o>o^.^mm el HI M 


H 


li 

If 
|3 








Q0C5O(^C0k0ONOOHC0 
lOONOOHWM^ipNQOO 






i 






OS 


cwoooH'fooHcooNai 

O H H H (M W "M 5* CO OJ 5 CO 5 

^hipOt^qocsprH^O^OO 

ibibibibiboooooooo 







00 


iO^M(NHHOOODNOO't 
CNOtTfipOb-CpcpOOr^lCNOO 

05666666666666 




00 



9 

P4 

H 

p 







OOSNOOOO0i0^e0M 
CONiOMHCONiOWHCiNLO 
OHNM-^^ipcpNOOGpCJO 

cbcbcbcocbcocbcocbcbcoco'i* 







VO 


OOOtsO-^CTHONiOMHO 
^ N * H QO >o H 00 O (M r. 1.0 
9 h ct ct m f f lo 9 N 

ONNNNNNNNNNNN 

cocococococococococccococo 


O 


w 

H 

M 

P 

O 

S3 





C0O00>0(MOOMOOe5OO 
QOitQlOrHOtNOC^COOO 
NqpqpOOOHHfNfNM'^'il 
OOOOHHHHHHHHH 
cococococococococococococo 


O 


5- 


O(Nfl0^05U5HOHN!MQ0W 
(NNHOOOOi*C5X(NN 
OONNCCCOOOQOOHH 






<*1 


O~*00C0t>.r-li0O^a0O}C0O 
Tt<ipiptpooot>t>b>-qpqpQp 
aocbdbcbdbdbcoro&dbcbccdo 




CO 


3 



O 

of 
W 
P 
p 

H 

H 

< 

Hi 





MOO(NiONOWOQCH-)(0 
HMOCOO(MONCJH^OaO 





O 


N00ffiH(M^ifflO0DOH'M 

6666666666666 




M 


11 
II 


*b ^0 "> wio <^>o ^o 


00 

CO 










Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 


51 


1 Latitudes, or Horizon 
L De v tances for Difference 


tal I 
fLei 


)is- 
els 



102 








TABLE II. 






Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 


m 

P 
> 





3 
3 

F 

& 
p 

a 





% 

H 

m 
> t 

P 
J 

H 
O 

S3 
O 

w 

PS 



of 

p 
p 

H 

H 

< 


qq Latitudes, or Horizontal Dis- 
Ov *' tances for Difference of Levels 


39 o' 

i 

2 

3 

4 
5 
6 
7 
8 
9 

IO 

II 

12 

13 

14 
15 
16 

17 
18 

J 9 

20 

21 

22 
23 
24 
25 
26 
27 
28 
29 
30 

3i 

32 
33 
34 
35 
36 
37 
38 
39 
40 

4i 

42 
43 
44 
45 

46 
47 
48 

49 

50 

5i 

52 
53 
54 
55 
56 
57 
58- 

60 


Cosines 
77696 

77660 
77641 
77623 

77605 
77586 
77568 
7755 
77531 

77513 
77494 
77476 
77458 
77439 
77421 
77402 

3S 

77347 

77329 
77310 
77292 
77273 
77255 

77236 
77218 
77199 
77181 
77162 

77144 

77125 
77107 
77088 
77070 

77051 
77033 

76996 
76977 

76958 
76940 
76921 
76903 
76884 

76866 
76847 
76828 
76810 
76791 

76772 
76754 

76716 
76698 

* 7 fe 
76660 

76642 

76623 

76604 

Sines 


60' 
59 
58 

3 

55 

54 
53 

52 
5i 

50 

49 
48 

46 

45 

44 
43 
42 
41 
40 

39 
38 

\i 

35 

34 
33 
32 

31 

30 

29 
28 

3 

25 

24 
23 

22 
21 

20 

19 

18 

3 

15 

14 
13 
12 
11 
10 

9 
8 

I 

5 

4 
3 

2 

0-50 




vo >o o ^- ^(- to to c< N M M 

O 
O 




w 
3 

> 
J 

PR 




w 

M 

p 


of 

p 

3 

p 






O00H05NiOCqON-*HQ0-<* 
H^WW'fiOCNNOOOOO 

t>.b-t-b-b-i>-t^t^66666 








ON 


C0rH00<MC}CDC0CSO<MC0C0 

T|iCONOH(M^CDNQr- I(Mt|( 
OCONOOiO^M^HHOQ 




ON 


O 
00 


CqQOiOT-(CO'*OCD(? ; H^'MOOCO 

NONONOWiOOOOWiOQO 

OOCOCDOOOOOOOOO 




00 





OO<MI^CC00000i^05Tt<0iC0 
OMNO^NHTi<OOHlOQO(M 

^cpcq<^HOOoqpcpNOO 







VO 


OTPOMOOWNfMCOOiOOfM 
CTNHOOOffiiiOOWNHO 
(pip^^^COCTCNrHrT-ippOi 

0006666666660 

^^ ^^ ^^ ^^ ^^ ^^ "^^ ^^ ^^ "*^ ^^ ,,! ^ "*^ 








NH100WNH0((N>00^ 

l0HOHt>(MXM00-^QT((O 
OOOONNOOiOW^7Cpcp9 

<^<cbcc<db<cbcb<x><x>c 

C0C0C0C0C0C0C0C0CQC0C0C0C0 




*0 




<*- 


OO^HNCOOCtMQlOHN^ 
OOOOOOqpqpNNNOO 

HHH0666666666 
eocococococococococooococo 


5- 




to 


HOOiOCOON^NaOMOOO 

ooN^fNqqHHHOOopo 

MMMcb6wWMMWM(^ 




to 


O 


W-^OCOOHW^iONOOOH 
^CNOOOOiOCOHONlO^fM 

ibibibiboobbibbibibo 

HHr- 1 1 li Ir-Hi IHHr- It IHH 





O 


HNCO^OVOONQOQOOlOO 
I^OiO^COCM hOOOONNO 

b-t^b-t^l^b-b-b-ppppp 





1-c 

g-ISb 


w MM^NcotOrhTl-ir) u-)VO 



On 

CO 








Diffe 


partures 
rence of 


or 
levels 


5 


*. ""*" C 'Levels 







TABLE II. 






Departures, or 
Difference of Levels 



39 o' 
i 

2 

3 

4 
5 
6 

7 
8 

9 

io 



Sines 
62932 
62955 
62977 
63000 
63022 
63045 

63068 
63090 
63113 
63135 
63158 

63180 
63203 
63225 
63248 

63270 

63293 
63316 
63338 
63361 
63383 
63406 
63428 
63451 
6347J 
63495 

63518 
63540 
63563 

63585 
63608 

63630 
63653 
63675 
63698 
63720 

36 

63787 
63809 
63832 

63854 
63877 
63899 
63921 
63944 
63966 
63989 
6401 1 
64033 
64056 

64078 
64100 
64123 
64145 
64167 

64190 
64212 
64234 
64256 
64279 

Cosines 



4 
3 
2 

0*50 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 



Of| ^ Departures, or Difference of 

39 De *- Levels 



O 'flO oO >oO v>o "> o 
>0 -t + <*i to N M 

o 



(MiOOOOCOOOOON^ONO 

eo -* 10 n oo o o -M ^ -)< o *o qo 

OOHNM-^ONCpOOHJI 
OOO660OOOOOOO 



OONCO>OOSOOOOOHN 

cpt^qpcsprHqqcp-^ipob-op 



TtiWfNHOOCONOO'tMq 
00Ti<ipOt>b-QpCiprH<NCpTr 
OOOOOOOOrHr^-lrHrHrH 



(MHOC500NiO^(MHONO 

lOOJHOOO'tlMOOQ'OWHO 



9HNN9 

^H ^^ *^H ^JH '^4 "^4 ^7^ ^4 ^^ ^^ ^^ "^^ "*^ 



ON0(NONIO(MG10MOOO 

to <m q o ?: o o c : CJ o cj o o 
t>.cpqpCipprH<>iCNcp^ipip 
r^t^t^i^cfcdooboboO'Xobooob 
cococococococococococococo 



O(MCii0rH00"*OC0(MC0Tt<O 

0(Mt>O^OOHN(M(X)^ 

rHrHrHrHrHrHrHrHrHrH<f*<^<fj 

cocococococococooococococo 



cooocooocooocooo 

NHCOOiOOl^OO 



COOOCOOOCOOOC^t^OJ 

10 io < o t^ 



dooboOOOOC5C50C20105005 



HtOQHMO 
^ O 00 H CO o 



CD OS <M ^ t> ' 

00OM0NO(N , 
ipCDOOCpcp^t^t>b-qpqpop 



CO^ONOOOHCTM^ONOO 

O0666666660OO 






50 



Latitudes, or Horizontal Dis- 
" Deff " tances for Difference of Levels 



104 



TABLE II. 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 



4oo' 



Cosines 
76604 
76586 
76567 
76548 
76530 
7651 1 

7649Z 
76473 

7643-6 
76417 

76398 
76380 
76361 
76342 
76323 

76304 
76286 
76267 
76248 
76229 

762IO 
7619I 
76173 
76154 
76135 
761 16 
76097 
76078 
76059 
7604I 

76022 
76003 
75984 
75965 
7594 6 
75927 
75908 
75889 
758 7 
7585I 

75832 
75813 

75794 
75775 
75756 

75737 
75718 
75699 
75680 
7566l 

75642 
75623 
75604 
75585 
75566 

'75547 
75518 
75509 
75490 

75471 
Sines 



60' 
59 
58 

% 

55 

54 
53 
52 
5i 

50 

49 
48 

46 
45 

44 
43 
42 

4i 

40 

39 

38 

11 

35 

34 
33 
3^ 
3i 
30 

29 
28 

26 



I 

5 

4 
3 

2 
1 
0-49 



Departures, or 
Difference of Levels 



d.fl Dee Latitudes, or Horizontal Dis- 
T=v * tances for Difference of Levels 



u 



O mo *^> O 00 100 o O *r>n 



r)(HNCOC53HCOHOHC&H 
OOfMtNHOOOONCiOf 

cbcbcb<bcbcbcbibibbbibib 



CO O O r-l 
<* CO b- 05 

05 00 t^ CO 

cb go 00 00 ' 

CD CD CD CD 



p^COC<JrHCppC5 
b- 

o 



00 00 00 co 00 

CD CO CD CD CD 



'f GO CO GO CO b- 1 I lO C5 CO b- 



OOOMiOOOOMiOQOONkON 
* CD lO <# CO 



GNGNrHOOOCOb- 



1 I r-i H t I O ' 

CD COCO O CD 



> O O O O O O 

> CO CD CD CO CO CO 



GN1 C5 <M CD 05 <N CD O <M O O CO 

cpip^^cocqcNrHcppocccp 

cocbcbcbcbcbcbcbcbcbc^cqc^ 



(MNO"*SHIOOOH^NOW 
C0Oi0 05C000(MC0r- iiO05-fCO 
ppcOb-t^ppipip^cpcpC^ 

o ib b ib b ib b ib >b ib ib b 1 

TT Tr "^ T^ t}< ^1 T^ *^ t^ "^ t^ "^ t^ 



CT0!HT)iNOWiOXOMiO 
OiOOOHO(NN(NNMQOeO 
CpCNGNrHrHCppcppcpcpt^b-. 

cbcocbcbcocbooi>-b~b-b-b~b- 

cococococococococococococo 



g^NOCTT)<OaOO<M^O)QO 
"*COGN!05iOiib-'*OCD<MGO 

cpcpipip^^^cpcocpc^GNi-H 
0000000000000 
cococococococococococococo 



H?JiONfflOiM-*iONXOH 
05C5g5Cpqpcpcpt^t^t^Opp 



HfiqejioosaoQOHffjM"^ 

(NOOOO^NOOONiOCOHOJ 

TOMNINfNWNHHHHHO 

ibibibibbibbibibibibibib 



OrHC<l<MCOCO'-HlO-OCDCDt>.b. 
OiO"tW!MHOOOONOiOT|( 
CD CD CD CD CD CO O O ip ip ip O lO 
b^b^b^b^b~b-bt>.b-b-b-b~b~ 



o v no *o O ^0 *^-> o oo ^o 



AQ _ Departures, or Difference of 

*v s ' Levels 



TABLE II. 



105 



Departures, or 
Difference of Levels 



4C0' 
1 
2 
3 
4 
5 
6 
7 
8 

9 

10 

11 

12 
J 

14 
15 
16 

7 
18 

9 

20 

21 

22 

*} 

24 
25 
26 
27 
28 
29 
JO 

31 
32 

33 
34 
35 
36 

37 
38 
39 
40 

4i 
42 
43 
44 
45 
46 

47 
48 

49 

5o 

5i 

52 
53 
54 
55 
56 
57 
58 

60 



Sines 
64279 
64301 
64323 
64346 
64368 
64390 

64412 
64435 
64457 
64479 
64501 

64524 
64546 
64568 
64590 
64612 

64635 
64657 
64679 
64701 
64723 

64745 
64768 
64790 
64812 
64834 
64856 
64878 
64901 
64923 
64945 
64967 
64989 
"65011 
65033 
65055 
65077 
65099 
'65122 
65144 
65166 

65188 
65210 
65232 
65254 
65276 

65298 
65320 
65342 
65364 
65386 

65408 
65430 
65452 

65496 

65518 
65540 
65562 
65583 
65606 

Cosines 



60' 
59 

% 

55 

54 
5? 

52 
5i 

50 

49 
48 

46 
45 

44 
4? 
42 
4i 
40 

?9 

38 

36 

35 

34 
13 

V- 
3i 

30 
29 
28 

II 

25 

24 
23 
22 

21 



0-49 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 



4-0 eff. J,, 'i M1 ' llllv s wp Difference of 
^* v Levels 



o 100 viq oo oo ^o "">o 



OOHjqcO-tiOiOOOOOO 



QOClOHtNMidOONQOCiO 



t>l>-OOCX)QOQ0QO0OQ00OQO 
OiOiOiOUJiOLOiOOiOiO 



(MHOC5NOi.o-t::c ( 
t(<OCON00OOh(M 



5> r^io 



o n 10 01 o 00 o 00 h r. n t ^ 

OOH(Ne5M'<tO'OCNQpO 



QOtHhNtH^ 

C?MOOMOO00 



> i>. co ci 



<N 30 CO 

w 00 o so 

10 O Nt> cp o o o O h ?r;i ^ 

xxxxxxxooocscbes 
cococococococococococococo 



OiOHCfMSCMOOCOQOWQOM 
TtfOiOOCOHNCqQOOOCi^O 
pH rH <OJ CO M^^ipiOOONCC 

(fi bi 0-1 en bi bj b i bi 01 oq oq oi oq 

cooocococococococococococo 



r-H o <* x co 1^ oi h o 05 -r 

NNCOCpcpCiOOOr-iMHCM 

10 b 10 ub ib b o 6 6 6 i i i 
o^oqoioqoioioioioioioioioq 



MHOOOHlOOOHeOOH^X 

oqcpcpcp^'^-*ipipppcpo 



OOOO^'OOCJHWIONOH 
W5 N O <M "t O X H K C 1^ Ol 
QOCpCiCiCiCJOppcppp-H 

(Oj oq 01 oq oq bi bi cb co 00 co 00 co 



is 

i - 

2^ 



OOOOHISM^CNXOOh 

(M c: ic o t^ x 1 ' 01 co >o 
Tt* * ^t -t -* -t 1 ~i< 'p o 10 it 10 10 








49 



Latitudes, or Horizontal Dis- 
^ tances for Difference of 1 . 



106 



TABLE II. 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 



41 d 
i 

2 

3 
4 
5 
6 

7 
8 

9 

10 



Cosines 

75471 
'7545* 
75433 
754H 
75395 
75375 

75356 
75337 
75318 

75199 
75280 

75261 
75241 
75222 
75203 
75184 

75165 
75146 

75126 
75107 
75088 

75069 
75050 
75030 
7501 1 
74992 

74973 
74953 
74934 
749*5 
74896 

74876 
74857 
74838 
74818 
74799 
7478o 
7476o 
74741 
74722 
74702 

74683 
74664 

74644 
74625 
74606 

74586 
74567 
74548 
74528 
7+509 

74489 
74470 
74451 
74431 
74412 

7439^ 

74373 
74353 
74334 
743H 
Sines 



0-48 



Departures, or 
Difference of Levels 



41 



Latitudes, or Horizontal Dis- 
^ tances for Difference of Levels 



O >oO vr>0 v-iO *"> O O >oO 

VO >o >0 ^ + M Cl O M M 

O 



NN00Q000C5C1OOOOHH 
^rocMrHppXJ^t^pip-^cp 



ncooosqohi:tJlonco 
pxt^pip^^cpCMi-HOOX 
t 1^- b- 1-- b- t-- r^- b- r^-. t^- b- O O 



SOiNOiCO(M>ONOH 

No^wNOHt:ooooc:io 
^ :: 01 h o c 9 cp n o o 10 ^ 
666666666666q 

OOOOOiOiOiOiOOiOiOiO 



O Cv (M C C ?>\ iC Ci (M lO CO CM 
Op t^- p p p Tfl Tf cp CM CM i-H p O 

CM CM CM CM CM CM CM ^M CM CM CM CM CM 



COkOOOOKiONO^-fiONOO 

r-H ic a CO I- -M 



00 CM 

CM CM r-t r-H O O 



O "* X 

X X t^ t- cp o 



ONON^ONOHCC^ON 

ccoo^o^cmr.cousoio 

t^ppipip^-^opcpCOCMCMrH 

cooccooococccccccocococcco 



COOfNiHONCOOHCmnOL'S 

00 o h n w :: 10 'N 00 -+ o ^) cm 

OOCOCOOOOCMCMCMCMCMCMCMCM 



HCM^tOOOOOOOHIMCO^'f 
rj< 11 X IO CM O O -f 1 I x 10 CM a 
Ppipip^^^^^cpcOCOCM 
CM CM CM CM CM CM CM CM CM CM CM CM cm 
CM CM CM CM CM CM CM CM CM CM CM CM CM 



T)HOONOOQOQOOH(N(aM 
ONiOWHClNOilMOOOO 
OOOOO9 9QQQCiC00p 



t^ t^ X X 

TtH CC CM i 

1000 o o ^ 



OCiOOHHHH 

cixx 



"^1 "^i ""^ *^H T"p "^H 



48 De s- 



Departures, or Difference of 
Levels 











TABLE II. 


107 


Departures, or 
Difference of Levels 


m 

3 
3 

> 

hi 


3 

3 
3 

p^ 

1 1 

p 



of 

3 

P 
H 

1 

p 


4.1 De* Departures, or Difference of 
** Levels 


41 d 
i 

2 
I 

4 
5 
6 
7 
8 

9 
lo 

ii 

12 

13 
4 
15 
16 

17 
18 

*9 

20 

21 

22 

23 
24 

25 
26 
27 
28 
29 
30 

3i 

32 
33 

34 
35 
36 

37 
33 
39 

40 

4i 

42 
43 
44 
45 

46 

47 
48 

49 
50 

5i 
52 
53 
54 
55 
56 
57 
58 

& 


Sines 
65606 
65628 
65650 
65672 
65694 
65716 

65737 
65759 
65781 
65803 
65825 

65847 
65869 
65891 
65913 
65935 
65956 
65978 
66000 
66022 
66044 

66066 
66087 
66109 
661 3 1 
66153 
66175 
66196 
66218 
66240 
66262 

66284 
66306 

66349 
66371 

66393 
66414 
66436 
66458 
66480 

66501 

*S 523 
66545 

66566 

66588 

66610 
66632 
66653 
66675 
66697 

66718 

66740 
66762 
66783 
66805 

66836 
66848 
66870 
66891 
66913 
Cosines 


6c/ 
59 
58 

3 

55 

54 
53 
52 
51 
50 

49 

48 

46 
45 

44 
43 
42 
4i 

40 

39 
38 

3 

35 

34 
33 

32 
3i 
30 

29 

28 

26 
25 
24 
23 
22 
21 
20 

19 

18 

3 

15 

14 
13 
12 
11 

10 

9 
8 

I 

5 

4 
3 
2 

0-48 




^o 100 oo "-o >00 oo 
voiOiOTJ-^totortNwM 

O 
00 


u 


GO 
S 



w 


3 

1 

& 

P 

M 


P^ 

W 



I 

t 1 
P 

H 
fc 

O 

1 

O 



O 

af 

5 

H 
H 

<! 






O O iO iC -f W (M h O 00 N C 9! 
O ^H N M -+ >0 53 t- OB X ^OH 

CNlOCSOHWOOiiirjOQOO 








ON 


IO -* CO rH Ci 00 CO T* 11 O J > -t Ol 

3 -* -r -* M eo r: co cc S sq -m -m 

OrH^cpTtiipOb-qpciO-T-oj 

6ooooo66ji6666 

OOOiOiOiOOiOiOiOOwC 




ON 



00 


>000)iO(MONiONiO 

00 t> c -t t: c-i h qo n -t :: 
^ipONODOOOHMrjiiip 
<n <* cfi <?q oi ;>i 05 02 6 02 09 02 03 



00 





^HoO'tHNWOcwxnc: 

(MONLCMOOOCKhX'- 03 
ClOOHfNWep^ipOONOO 

t^ ^1 *^i tji ^4 "^i ^^ "^^ t^ ^1 Tip ^^ -^H 


O 




VO 


noicHOCTScqooMQo^oo 

O (N 35 w c: o 1 GO O H X )* 
Wit^OOONOOCOOOOH 

66666666356666 
csoococococococococo-^-^'* 








XMN(?qOHiCO-f<X(MO 
OOHOiNNCJoOiiO'fOiO 
CCOpS^CiOOHHOlCqW^Tti 

NcqiyicqcococoeacQeboscbw 

cococococococococococococo 


O 

U1 





NCO^NHLOOO<MiOOO(MiO 

* 00 co n h -fO :: n i 
cqcqcpco-^"-t<ip*oioc30b~b- 
666666 6 666666 


* 




to 


HiONOCOOOH-JfOOHil 
XHTfXH'+NH'tNO^N 
pt^^i^XXXppppp 

635.66006606666 

Hr- 1 1 1 1 i 1 1 1 Ir-Hi IHH(MM 




to 





cm ^ op x 0? - f-i 05 x 

66666 6 eo 666666 








HIMNMiiOONXaOOH 
CN00CO- l '5l??-*ON X O 

10 w' w op p p p p 
6 6 6 6 6 cDocecDcocob 





Is 
if 

h 


"b "flO oO >oO ^ O *<> ^o 

II M N N MM ^ + >0 wivo 



Si- 








Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 


4 


ft Latitudes, or Horizon 
5 ff * taucefl for Difference c 


tall 
fLe 


vels 



108 



TABLE II. 



Latitudes, or Hori- I 
zontal Distances for ' 
Difference of Levels 



Cosines 

74295 

74*75 
74256 

74*37 
74217 

74198 
74178 
74159 
74139 



74100 
74080 
74061 
74041 
74022 

74002 
73983 
73963 
73943 
739*4 

73904 
73885 
73865 
73845 
73826 

73806 
73787 
73767 
73747 
737*8 

737o8 
73688 
73669 

73649 
73629 

73610 

73590 
73570 
73551 
73531 

735" 
7349 1 
7347* 
7345* 
7343* 
7341a 
73393 
73373 
73353 
73333 

733H 

73*94 
73274 
73*54 
73*34 
73215 
73195 
7375 
73155 
73135 
Sines 



741 19 50 



0-47 



Departures, or 
Difference of Levels 



42 



Degf. 



Latitudes, or Horizontal Dis- 
tances for Difference of Levels 



E;; 
I = 



If 



* 1 r-i r 1 oi oi o-i q SR w co so So 

CO (N iH p C5 op t>- p O tjh CO Ol 1 I 

^^^^cbcbcbcbcbcbcbcbco 



>ONOff)WiOOOOOOHH 
Q0C3OMi(oOSXOH(M 

xt^^cpip^cpqqr-ipocsoo 
6 6 6 6 6 6 6 6 6 6 o o 
0000000000000 



H ^ 10 00 h (M w >o 3 o K on 
lo n o h co o 00 o irn o 'X o 

r^cpoqqqrHpGiClCpb-OiOiO 
GZGiCids&GiVDOOOOOOCDOCCC 

o c io 10 o 10 io >o o c 10 LO o 



ppqpopt>.ppO'*^cpc<ir-i 

(OTrHrHrHrHrH^-lrH-l-li^-I^HrH-H 



Q0OH5i(ONNOOOOH 

"^T "^ "^ '^ "^ "^ "^ "^T "^ *^ T^ "^ Tt^ 



NCOOH(MCOi<T)(OOONN 

lOOlOHOHOHfflHffiHO 

HHOOOOaoqDNNOOip 
t^r^^b-oo 0000000 
cococococococococococococo 



losoooooHincqwco^^ 

(N ^ O N W O O h N Q O 
NOOOiCi0^^i<COcO(MiM 



o o 
J^ -tl 

(NNCqWHHHOOOOOO 

53 01 6q oi -ii cq tfi oq eq cq n ,-h .h 
G^c^cM(M<?qo^(^oq(MOqc^oqG^ 






WCOTH-fHOiQ'OCOOONNN 
O ^ (M O X O t)( (M O 00 O * 'M 
COGpOOCONNNNlNOOipo 

Tp ^1 "*^ Tp T^ "*^T ^T ^T "^T *^ "^H ""^ "^"p" 

HHHH 






r-< Cq Oq (M Ol CO CO CO CO CO CO CO CO 

co 01 h o a co s o 10 't ^ 'M h 
^^^^cpcpcocpcococococo 



M M H PJ M WtJ- + >0 VOVO 



47 



Deg. 



Departures, or Difference of 
Levels 











TABLE II. 




Departures, or 
Difference of Lrvcls 


GO 

p 
> 

a 





1 

P 

O 
rsT 

3 

p 

H 

w 
p 

i 


a g\ _ Departures, or Difference of 

42 * * 1 


42 o 

2 

3 
4 
5 
6 

7 
8 

9 

io 

ii 

12 

13 
14 

15 

16 

7 
18 

*9 

20 

21 

22 

*3 

*4 

2-5 

26 

*7 

28 

29 
30 

31 

32 

33 

34 
35 
36 

37 
38 
39 

40 

4i 
42 
43 
44 
45 
46 
47 
48 

49 

50 

5i 

52 
53 

54 
55 
56 
57 
53 

g 


Sines 
66913 
66935 
66956 
66978 
66999 
67021 

67064 
67086 
67107 
67129 

67150 
67172 
67194 
67215 
67237 

67258 
67278 
67301 
67323 
67344 
67366 
67387 
67409 
67430 
67452 

67473 

67516 
67538 
67559 
67580 
67602 
67623 

3& 

67688 
67709 
67730 
67752 
67773 

67795 
67816 
67837 
67859 
67880 

67901 
67923 
67944 
67965 
67987 

68008 
68029 
68051 
68072 
68093 

681 1 5 
68136 
68157 
68179 

68200 
Cosines 


60' 
59 
58 

% 

55 

54 
53 
52 
5i 

50 

49 

48 

46 

45 

44 
43 
42 
4i 

40 

39 
38 

36 

35 

34 
33 

32 
31 
30 

29 
28 

11 

25 

24 
23 
22 
21 
20 

19 
18 

\l 

15 

14 
13 
12 
11 
10 

9 

8 

I 

5 

4 
3 
2 
1 
0-47 




O i^iO >oO v-iO ^0 mo vr>o 
NO 0<0^<j-MM H w 

O 


8* 






On 


CO 

> 

O 

O 

2 

i 

P 



O 

00 
1 1 

p 

< 

g 

O 

O 

( 1 



of 

p 

D 
H 

a 

3 







1-1 CM CM CC -* U? 1- *0 t^ CO X O O 
P O rH CM CO rt< ip O t- X O O CM 
m (> l'^ I^NNNNNNNaD* 

55^ecooNtoceNtoflDcoNS 9 




ON 


<MO3M0003 i MX'fO 

(NHHHHOOOO5XX30 

71 M -+ p O b- cp p Ci O rH CM qp 

0000000000000 


O 
00 


Ot>WC5iOHNO^OJOO 
MHOXN'OiMHOXNO 
ip O N N 00 3 O H <M CO W + ip 

I0i0i00>00i0i00l0 000 


O 

OO 





QOOOHOHCOhOhioO 

COHOO^H^O-fHCJO-f 

cp p p p rH cm cm cp -* ip ip p 1 .- 
OOOb-i^b-r^i^i^b-t^r^t^ 


O 





00Nff)NHiOO-i<X)'M0 

6666666066000 


O 

NO 





OO^X00NO?5NO 
iO H C h N 'M N ?: X -t C5 ^ 
^ LO ip O O N N X X O CO O H 

cocbcbcbcocbcbcoc'ococb'*'^ 
cococococococococococococo 


O 
WO 





lOXM'SX^iOCSMiSNO 
O O O O CC CO CM O O O O 00 CO 

n cp x cp cp cp 9 h h h w qq 

CM CM CM CM CM CM CM CM CM CM CM CM CM 


O 
CO 



CO 


"<* -h 00 IO CO O CM -* X p 

NON6--30oojg 

6^H^i!-H^C>ICMppCpp^'* 

6666666666000 

CM CM CM CM CM CM CM CM CM CM CM CM CM 





13-383 
13404 
1,3-426 
13-447 
13-469 
13490 
13-612 
13-533 
13-555 
13-576 
13-597 
13-619 
13-640 




H 





0i O -H CM CO j* O O - CO O p S ' 1 

t~- t^. r^ i> b~ t> t> *> > ^ f- x 

6666666666000 


O 


11 


M H H MW + ^'fl ^ONO 


<4- 




Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 


m & Latitudes, or Iloiizor 
*i De8r " tances for Difference c 


tal Dis- 
f Levels 



110 








TABLE II. 






Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 


go 
J 

S 

ft 

O 



tf 

W 

ft 

a 


go 
W 

SB 

H 

GO 

B 

H 
O 

C 

af 

E 

H 
3 


a<\ _ Latitudes, or Horizontal Dis- 
*0 e &* tances for Difference of Levels 


43 o' 

z 
3 

4 
5 
6 

7 
8 

9 

10 

ii 

12 

13 
4 
15 

16 

17 
18 

9 

20 

21 
22 
23 

24 

25 

26 

27 
28 

29 

30 

31 

32 

33 
34 
35 
36 
37 
38 
39 
40 

4i 

42 
43 
44 
45 
46 

47 
48 

49 
50 

5i 

52 
53 
54 
55 
56 
57 
58 

I 9 
60 


Cosines 
73135 

73096 
73076 
73056 
73036 

73016 
72996 
72976 
72957 
'72937 
72917 
72897 
72877 
72857 
72837 
72817 
72797 
72777 
72757 
72737 
72717 

72697 

72677 

72657 
72637 
72617 
72597 
72577 
72557 
72537 
72517 
72497 
72477 
72457 
'72437 
72417 
'72397 
72377 
72357 
72337 
72317 
72297 
72277 
72256 
72236 

72216 
72196 
72176 
72156 
72136 

72116 

72095 
72075 
72055 
72035 
72015 
71995 
71974 
71954 
71934 
Sines 


6c/ 
59 
58 

55 

54 
53 
52 
5i 
50 

49 
48 

46 
45 

44 
43 
42 
41 

40 

39 
38 

36 
35 

34 
33 

32 

31 

30 

29 
28 

27 
20 
25 

24 
23 
22 
21 
20 

19 
18 

l6 
15 

13 
12 
II 

IO 

9 
8 

I 

5 

4 
3 
2 
1 

C46 




O u-io *"> O oO *oO >oO >oO 
V3 10 10 ^ ^ M M H c m w 

O 

VO 


^ 03 

It 

Is 

S3 


GO 
1-3 

ft 





ft 


ft 

& 

p 



go" 
ft 

p 

a 

ft 

P 






HOQCCNCpip-^MNHOO 

cwwcMCMCMCMCMCMCMCMCMCMrH 
i>i>i>.t>.t>i>.t^i>.i>t>i>.i>i>. 








ON 


-^(NWCOOWOOOOWfNfMHr- 1 

cpb-cpip-^cpq^rHr-ipciqpt^ 




OS 



00 


00QOOOOOOOC5O00N 
O(Ni0NCiHM0SQ0O(N'* 
lp^CpC^rHrHCpCiCOb-b-Olp 

cbcboocbcJDcbobb^b-t^b'i^b- 


O 
00 





fTHiTiCpcpOCCl^t-Cpip^^OO 
rHrHrHOOOOOOCOOO 







VO 


1 1 CM CM CM CM CM <M CM CM NIMHO 
COIMOO'taXNOC'tX'MC 
GOCOI^t^Cp OIC^^^CM CM rH 

cococococococochcochcococo 

Tj4 "^4 ^^1 ^^ ^^ "^i ^^1 *^qi TJi ^p ^P ^1 ^31 




VO 





t^aoooao-Doooooooocooot^t^ 

OhOhOHOhOhOhC 

ioo^"*cococq(Ni7-t' 1 p 
6o66ecc6cb6cco 
coc^ctcccccocococococococo 








lOHNCOOiOHNKOlOHN 
(MGMt-HrHCpOCpOOqpopopt^ 

Cioscsch>cbccccccab 

CMCMCMCMCMCMCMCMCMCMCMCMCM 


3- 







0r _| T _| P _|,_| t _, r _lT-lrHT-lT-H 

rfiHQOlO'MOOCOON'tHOO 

c;oqpcpcpb~b~b-t^o<po*p 

rHr^r^-lrHrH^-!rHrHrHrHAlrHr^-t 

cmcmcmgmcmcmcmcmcmcmcmcmcm 




CO 





(NOCOO't(MOX3'+(MOCO 

cpcp*pppipo^h^'*^-^cp 

1 Ii lr 1 1 It Ir It < i It It IHHr- 1 








HOOXNOiO^MNHOa 
CO CO CM CM CM CM 'M CM CM CM CM CM nH 


O 


if 
a* 


"o >oO vo O 00 oo w-io ^10 

M M t* H fM + + >0 Vr>VO 


rr 








Departures, or 
Difference of Levels 


4 


6Deg ^^. 















TABLE II. 


ill 


Departures, or 
Difference of Levels 


3 
> 

P^ 
O 


3 

F 

1 1 

p 


3 

& 

H 
P3 

P 


40 De( _ Departures, or Difference of 
*^ Levels 


43 o' 
i 

2 

3 
4 
5 
6 

7 
8 

9 

10 

ii 

12 

13 

14 
*5 
16 

7 

18 

19 

20 

21 
22 
23 
24 
25 
26 
27 
28 
29 

30 

31 

32 

33 

34 
35 
36 
37 
38 
39 
40 

4i 

42 

43 
44 
45 
46 

47 
48 

49 

50 

5i 

52 
53 
54 
55 
56 
57 
58 

g 


Sines 
68200 
68221 
68242 
68263 
68285 
68306 

68327 
68349 
68370 
68391 
68412 

68433 
68455 
68476 
68497 
68518 

68539 
68561 
68582 
68603 
68624 

68645 
68666 
68688 
68709 
68730 

68751 

68772 
68793 
68814 
68835 

68856 
68878 
68899 
68920 
68941 
68962 
68983 
69004 
69025 
69046 

69067 
69088 
69109 
69130 
691 5 1 
69172 
69193 
69214 

69256 

69277 
69298 
69319 
69340 
69361 

69382 
69403 
69424 

'%% 

Cosines 


60' 
59 
58 

3 

55 

54 
53 
52 
5i 
5 

49 
48 

46 
45 

44 
43 
42 
41 
40 

39 

38 

? 

35 

34 
33 
32 
3i 

30 

29 
28 

26 

25 

24 
23 
22 
21 

20 

19 
18 

11 

15 

14 
13 

12 

10 

9 
8 

I 

5 

4 
3 

2 
1 
0*46 




O ^O u-,o *o O 00 100 vo 
O 

VO 

* 


I! 

it 


J 







hh 


to 

1 

1 i 
P 

O 
SJ 

Q 

1 1 
1 1 

lO 

1 1 

O 

m 
"A 
P 
P 
H 
1 1 
H 

3 






OOlMQ0i<O>0^C?HOHC 

h h 01 :: :: -f -f 1.: 1: c *c 

01 w -^ 10 9 n a; Ci 7 01 :: -t 

0000000660000 








ON 


OOHO(NNMNHO-OC5 

co n n c !: i* -t ?: 03 oi <-* 
ep Tt* ic 9 n op c: h N er -t i^ 




OS 


O 
OO 


OOOiOO^QOCONHOOM 

0'tWHoa;co?:5'ioa)t> 

ipONCOOpOprHCqwilf ip 

^ -* "^ t* -^ -^ ib 10 ib ib ib 

lOiOiOiOOiOiOiOiOiOiOOiO 


O 
00 


O 


Q'*ONHOO'?'lOOC0O 
NCOQOOOHHNri't'tiOO 





O 

SO 


O "* b- i 1 -^ 00 1 < "^ GO 1 1 * b O 

<?qx^HNJ:oc<M^iOHoo 

OQOHH(NMW^T)<ipCO 

OOrHrHrHr^rHrHr^-lr^rHrHrH 

^^ TJ1 Tp ^1 ^T T^ "^^ ^^H TjH TJ1 "^1 ^1 ^1 




VO 




vo 


OWOOCTiOCOOM^OOHW 
OiOOiOHC-NfMNOVO)^ 
H H M S>1 9 CO f + 9 ip 9 O N 

^^1 ^TJI "^71 ^PJl "^1 "*4l T^l ^1 T^ ""-^l Tfl T"P ""T^ 

woticticococooocococccococo 


O 
vo 





00<MOOiO^::N-30-t<00 

(Mcoco^^^ioipoob-r^b- 
b, b- b- b- b. b- b- b. b. l^ b- b. b- 

<M CM Ol CM CM Ol CM CM CM CM CM CM CM 


O 




co 


CM^LONC5H(MtJ(ioNOOO 
OC^OCOHOCOH^NO'f 
^^OiOipOOOb^b-b-cpap 
6000600006000 

CM CM CM CM CM CM CM cm cm cm cm cq cm 


O 
to 


O 


OH^T((i0ON0CCOHiN!0 

** 00 <m -* x w q b- 

CCOt^NNNNCpCpODOpcp 

TOrocbwrec^6cbcbcbcba3o3 





O 


OHH(N(SMWT(*iOiCOOS 
CM 00 -t C O N X ^ O ^ C>l 5 

ooooooooooxxxc:ooOwj 

6666666660000 





a 

S SB 

II 


*x mo o O vo O *o o vo vno 

O 
ro 




4 


U Latitudes, or Horizon 
b Deff " tances for Difference 




Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 


tall 
f Le 


)is- 
yelfi 



112 






TABLE II. 






Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 


i 




3 

ft 
A 

& 


w 
H 
O 

H 

w 

A 





1 



PS 


of 

R 
p 

H 
1 ( 
H 

3 


^A Latitudes, or Horizontal Dis- 
*^* eB ' tances for Difference of Levels 


44 cf 

2 

3 
4 
5 
6 

7 
8 

9 

10 

ii 

12 

13 
H 
15 
16 

17 
18 

9 

20 

21 
22 
23 
24 
25 
26 

27 
28 
29 

30 

31 

32 

33 

34 
35 
36 

37 
38 
39 

40 

4i 
42 
43 
44 
45 
46 
47 
48 
49 
50 

5i 
52 
53 
54 
55 
56 
57 
58 

I 9 
60 


Cosines 

71934 
719H 
71894 
71873 
71853 
71833 

71813 
71792 

71772 
71752 
71732 

717" 
71691 
71671 
71650 
71630 

71610 
71590 
71569 
71549 
71529 
71508 
71488 
71468 
71447 
71427 

71407 

71366 
71345 
71325 
71305 
71284 
71264 
71243 
71223 

71203 
71182 
71 162 

71141 
71121 

71 100 
71080 
71059 
71039 
71018 

70998 
70978 
70957 
70937 
70916 

70896 
70875 
70854 
70834 
70813 

70793 
70772 
70752 
70731 
7071 1 

Sines 


6cf 

59 
58 

% 

55 

54 
53 
52 
5i 
50 

49 
48 

46 
45 

44 
43 
42 
4i 

40 

39 
38 

11 

35 

34 
33 
32 
3i 

30 

29 
28 

11 

25 

24 
23 
22 
21 

20 

19 
18 

\l 

15 

14 
13 
12 
11 
10 

9 

8 

I 

S 

4 
3 

2 
1 
0-45 




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a 


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pa 

PB| 

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K 
O 

Is 

ft 
A 

P3 



of 


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Ph 

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M 


^MNOCNiSWOOOOMH 
W?:iM(N(M(M!MHHHH 

pxt^pip^cpcMrHppxt^ 

HHHrlHHHHHHOOO 






O 
OS 


^lOiOONTDOOO-i CM W ^H 
"^ -t* ^ ^ -i* + -i* -i< tj< w c'r c'^ 






O 

00 


-* C QO O M -t O N i: h 0: c 6 
W^cpMCTHOOOpqpNCO 



00 





CflOHTJiNOOUOOOH^OO 

cpcMCMrHppcsxb~b~pip^ 

666666666^666 








OOOOONOiO'f^^OIBN 
OOf?NHi5CNHi?0C(M 
HHOOOOONNOOiO^^ 

CO CO CO (f 1 CM bq (?q <jq <fq bq (f-| oi <f 1 




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O CO 00 N N O O C lp -f -f cc 

10 ib ib ib ib b b ib >b b b ife >b 

cococococococococococococo 





% 


^COCOCN(Mt-lOC500^.COiO^ 

n 00 10 h n r: X -i" O X C>1 TO 

xxxxxxxxxxxx x 

CMCMCMCMCMCMCMCMCMCMCMCMCM 


% 




CO 


ip ip ip -^ "*""? cp co co 05 cm cq oi 
CM CM CM CM CM CM CM CM CM <M CM CM CM 




m 





t^OCDCOCOiOiOiO'^'fCOCO^T 
XO-f^)OX'C-|"MOX'CT|i 
COCpCOCOCOCMCMCMCMCM^rHr-i 
*^i ^^1 Tp ^^ ^fi ^i ^-p T71 t^H ^r^ r^ "*-ji ~^i 


O 




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11 

iff 


COCOCOOOCOCpCMCMCMCMCM t^H 

CONOiOTftMINHOCOON 

r r lr r ,, T l 'T ,r r ,r 7 Hr 7 Hr r ,, T lr 7 HC ? < ? :>c> 


O 


O "OO ij-iO >oo k->o **-> ^0 
m hi rj e coco^-^10 iovo 




41 


T T . _ 


Departures, or 
Difference of Levels 


r Departures, or Diliere] 
J e8r * Levels 


jce c 


1 



TABLE II. 



113 



Departures, 


or 1 


Difference of Levels ' 




Sines 




44 of 


69466 


60' 


i 


69487 


59 


i 


69508 


58 


3 


69529 


H 


4 


69550 


56 


5 


69570 


55 


6 


69591 


54 


7 


69612 


53 


8 


69633 


51 


9 


69654 


51 


lo 


69675 


5 


ii 


'69696 


49 


12 


69716 


4 8 


3 


69737 


4 7 


H 


69758 


46 


15 


69779 


45 


16 


"69800 


44 


"7 


69821 


43 


18 


69841 
'69862 


42 


9 


41 


20 


69883 


40 


21 


'69904 


39 


22 


69925 


38 


13 

24 


W 


S 


15 


69987 


35 


26 


70008 


34 


27 


'70029 


33 


28 


70049 


31 


19 


70070 


3i 


30 


70090 


30 


3i 


701 1 1 


2 2 


31 


70132 


28 


33 


70153 


% l 


34 


70174 


26 


35 


'70195 


15 


36 


70215 


24 


37 


70236 


13 


3 


70257 


22 


39 


70277 


21 


40 


'70298 


20 


4i 


70319 


19 


42 


70339 


18 


43 


'70360 


l l 


44 


703 81 


16 


45 


'70401 


15 


46 


'70422 


14 


47 


70443 


13 


48 


70463 


12 


49 


70484 


11 


5o 


70505 


10 


Si 


70525 


9 


5i 


70546 


8 


53 


70567 


7 


54 


70587 


6 


55 


70608 


5 


56 


70628 


4 


57 
58 


70649 
70669 


3 
2 


59 


70690 


1 


60 


7071 1 
Cosines 


0-45 



Latitudes, or Hori- 
zontal Distances for 
Difference of Levels 



a a Departures, or Difference of 

*XTc ee ' Levels 



100 ^iO oO *^>o >oO inO 
10 >0^ ^r w w H N w w 

o 



OOU5ONHxt00Hi3 00H 
ONSNOO'XCiCOOOOH 
^iipONCpOOrH^-ldpON 
60566606666666 
OOOCOtON^NM>Nt>- 



HHOOOOOIiNOOO^^ 

loONoooOwiOH^cpTtoao 
ctcmcmcmcmcmototototwotot 

COCDCOCDCDCDOCOCDsDCDCDCD 



WOOMCDOWIOQQH-^OOO 



I00i0000i000000 






HMOS 

M O 00 LO iM Q 

cpONQpQOOHWWOJ-^f 

obobobobobc6666666 

^ t^H rjl r^i -^ ^1 ^ t^I ^ "^ ^ ^r ^T 



OfNiONOtMiOOOHWiOffl 

ooTtoowocHN-toog 

Or^.OOOOCSCiO'-'i-lCNOTW^ 

^^Alr^rHr^CMCMCMCMCMCNCM 



C000C000"^O-^O^O 
NI>00 00OOO 



_ iq O * 
^ * 05 09 

COCCCOCCCOCCC0CT>C3C0C0C0C0 



CDCOOCTMOCOOOOQ^W^ 

10 r. jo n h o o -)< oo 
^r^i^r^t^i^obobobobdbQbob 

CMCMCMCMCMCMCMCMCMCMCMCM<M 



OH(MT)HOONOOOOH(Mn 
^NO^^OiMOXJHOOOH 
opqDOOOOOOOHHHN 

666666h'-ihhhhh 
cm cm cm cm cm cm cm cm cm cm cm cm cm 



wcboooococo'^^'^^^^'JJ 



NNNgg2gg^ 



-(( lO O N 00 -. 

05OCJOOC5 



O9699O 

(6666cot>t-t>^i>NN 



m hi c^ H to m + + *o w->vo 



t 



A - Latitudes, or Horizontal Dis- 

40 Beff * tances for Difference of Levels 



114 






TABLE III. 






Degree 


TANGENTIAL ANGLES FOR 












Tangent 


Cotangent 








o o- 


00000 


Infinite 


6V 


CIRCULAR CUE 


i 

2 


00029 
00058 


34377460 
718-8730 


'% 


400 feet \ 




3 

4 


00087 
001 16 


145-9150 
859-4363 


% 


4 chains [ 


Radii. 


5 


00145 


687-4588 


55 


40 metres / 




6 


00175 


572-9572 


54 






7 


00204 


491-1060 


53 


Bends. 




8 


0023 3 


429-7175 


52 






9 

10 


00262 
00291 


381-9709 
343*7737 


5i 

50 


In one 66 feet chain 6 inches 


ii 


00320 


312-5213 


49 


Rails 18 lengths If 


12 


00349 
00378 


286-4777 
264*4408 


48 

47 < 


In one 100 chain 9f 


4 
15 


00407 
00436 


245-5519 
229-1816 


46 
45 


Rails 18 lengths lfV 


16 
*7 


00465 
00495 


214-8576 
202-2187 


44 
43 


Superelevation op Rails. 


18 
19 


00524 
00553 


190-9841 
180-9322 


42 
4i 


66 feet chain, 20 m. 


per hour 6" 


20 
21 


00582 
0061 1 


171-8854 
163 7001 


40 
39 


100 feet chain, 20 m. 


per hour 3|" 


22 
2-1 


00640 
00669 


156-2590 
149-4650 


38 












24 


00698 


143-2371 


36 


Left-hand 


No. of 


Right-hand 


25 

26 


00727 


137-5075 


35 


Reading 


Chains 


Reading 


00756 


132-2185 


34 








27 


00785 


127-3213 


33 


356 25-1' 


i 

1 


3 34-8' 


28 

29 


00814 
00844 


1227739 
118-5401 


32 
3i 


352 50-3 


7 9-7 


30 


00873 


114-5886 


30 


349 15-4 


1* 


10 44-6 


31 

32 

33 


00902 
00931 
00960 


110*8920 
107-4264 
104-1709 


29 

28 

2 l 


345 40-5 
342 5-7 


2 


14 19-4 
17 54-3 


34 
35 


00989 
01018 


101*1069 
98*2179 


26 

*5 


338 308 


3 


21 29-1 


36 


01047 


95-4894 


2 4 . 


334 56-0 


H 


25 4-0 


37 


01076 


92*9084 


*3 


331 21-1 


4 


28 38-9 


38 
39 


01 105 
01135 


90*4633 
88*1435 


22 
21 


327 46-3 


4* 


32 13-7 


40 


01 164 


85*8397 


20 


324 11-4 


5 


35 48-6 


4i 
42 


ci 193 

01222 


83.8435 
81*8470 


19 

18 


320 36-5 


&i 


39 23-4 


43 


01251 


79*9434 


*l 


317 1-7 


6 


42 58-3 


44 
45 


01280 
01309 


78*1263 
76*3900 


16 
15 


313 26-8 


H 


46 33-2 


46 


01338 


74*7291 


H 


309 52-0 


7 


50 8-0 


47 
48 

49 


01367 
01396 
01425 


73-1389 
71*6150 

7 -I 533 


13 
12 
11 


306 17-1 
302 42-2 


7J 

8" 


53 42-9 
57 17-7 


5o 


01455 


68*7500 


10 


299 7-4 


9 


60 52-6 


5 1 

52 


01484 
01513 


67*4018 
66*1054 


9 

8 


295 32-5 


64 27-5 


53 
54 
55 


01542 
01 571 
01600 


64*8580 
63-6567 
62*4991 


I 

5 


291 577 
288 22-8 


10 


68 2-3 
71 37-2 


56 


01629 


61*3829 


4 


284 47-9 


101 


75 12-0 


57 
58 


01658 
01687 


60*3058 
59*2658 


3 
2 


281 13-1 


11 


78 46-9 


59 


01716 


58*2611 


I 


277 38-2 


12 
121 


82 21-7 


60 


01746 
Cotangent 


57*2899 
Tangent 


89 O 


274 3-4 

270 28-5 


85 56-6 
89 31-5 


89 Degrees 


- w 2 



TABLE III. 



115 





1 Degree 














TANGENTIAL ANGLES FOR 










1 o' 


Tangent 
01746 


Cotangent 
57-2899 


60' 


CIRCULAR CURVES. 


I 


01775 


56-3505 


59 




2 


01804 


55*4415 


58 


500 feet 




3 

4 


01833 
01862 


54"56i3 

537085 


u 


5 chains 


Radii. 


5 


01 891 


52-8821 


55 


60 metres 




6 


01920 


52-0806 


54 




7 


01949 


51-3031 


53 


Bends. 


8 


01978 


50-5485 


51 




9 

10 


02007 
02037 


49-8157 
49-1038 


5i 

50 


In one 66 feet chain 5 inches 


ii 


02056 


48-4120 


49 


Rails 18 lengths If 


12 


02095 
02123 


477395 
47-0853 


48 
4 Z 


In one 100 chain 7 


14 
15 


02153 
02182 


46-4488 
45-8293 


46 
45 


Rails 18 lengths 1 


16 

*7 


0221 1 
02240 


45*2261 
44-6385 


44 
43 


Superelevation of Rails. 


18 


02269 


44-0661 


42 




19 

20 


02298 
02328 

02357 


43-5081 
42-9640 

42-4334 


4i 

40 


66 feet chain, 20 m. per hour A\ n 


21 


39 


100 feet chain, 20 m. per hour 3" 


22 


02386 
02415 


4i*9"57 
41-4105 


38 










24 


02444 


40-9174 


36 


Left-hand 


No. of 


Right-hand 


25 


02473 


40-4358 
39-9654 


35 


Reading 


Chains 


Reading 


26 


02502 


34 








27 


02531 


39-5058 


33 


357 81' 


1 


2 51-9' 


28 
29 


02560 
02589 


39-0567 
38-6177 


32 
3i 


354 16*2 


2 
1 


5 43*7 


30 


02619 


38-1884 


30 


351 24-4 


H 


8 35*6 


31 

3* 


02648 
02677 


37-7686 
37*3578 


29 

28 


348 32-5 


2 


11 27-5 


33 


02706 


36-9560 


Z l 


345 40*6 


H 


14 19-4 


34 
35 


02735 
02764 


36-5626 
36-1775 


26 
*5 


342 48-7 


3 


17 11'3 


36 


02793 


35-8005 


24 


339 56-8 


31 


20 3-1 


37' 


02822 


35-4312 


2.3 


337 50 


4 


22 55*0 


38 
39 


02851 
02881 


35-0695 

34*7151 


22 
21 


334 13*0 


H 


25 46-9 


40 


02910 


34*3677 


20 


331 21-2 


5 


28 38*8 


4i 

4 2 


02939 
02968 


34-0273 
33-6935 


19 
18 


328 29*3 


2 


31 30-6 


43 


02997 


33-3661 


'I 


325 37-4 


6 


34 22-5 


44 
45 


03026 
03055 


33*0451 

32-7302 


16 
15 


322 45*6 


6J 


37 14-4 


46 


03084 


32-4212 


14 


319 53-7 


7 


40 6*3 


47 
48 

49 


03 1 14 
03143 
03172 


32-1180 
31-8205 
31-5283 


13 
12 
11 


317 1*8 
314 9*9 


8 


42 58-2 
45 50*1 


5o 


03201 


31-2415 


10 


311 18-1 


H 


48 419 


5i 

5 Z 


03230 
03259 


30-9599 
30-6833 


9 
8 


308 26*2 


9 


51 33*8 


5? 


03288 


30-4115, 


I 

5 


305 34*3 


H 


54 25-7 


54 
55 


03317 
03346 


30-1446 
29-8822 


302 42*4 


10 


57 17-6 


56 


03 3 7 6 


29-6244 


4 


299 50-5 


10J 


60 9-4 


59 


03405 


29-3711 


3 


296 58-7 


11 


63 1*3 


03434 
03463 


28-8770 


\ 


294 6*8 


ni 


65 53-2 


60 


03492 


28-6362 


88 


291 14-9 


12 


68 45*1 




Cotangent 


Tangent 




288 23-0 


12i 


71 36*9 


88 Degrees 


z 





116 






TABLE III. 








2 Degrees 
















TANGENTIAL ANGLES FOE 










2 O' 


Tangent 
03492 


Cotangent 
28-6362 


6d 


CIRCULAR CURVES. 


I 
2 


03521 
03550 


28-3993 
28-1664 


59 
58 


600 feet \ 




3 

4 


03579 
03609 


27-9372 
277117 


11 


6 chains [ 


Radii. 


5 


03638 


27-4898 


55 


60 metres f 




6 


03667 


27-2714 


54 






7 
8 


03696 
03725 


27-0565 
26-8449 


53 
5* 


Bends. 




9 

IO 


03754 
03783 


26-6366 
26-4316 


5i 

50 


In one 66 feet chain 4| inches 


n 


03812 


26-2296 


49 


Kails 18 lengths 1 


12 


03842 


26-0307 


48 





" 


13 


03871 


25-8348 


A l 


In one 100 chain 6| ;; 


*4 

is 


03900 
03929 


25*6418 
25 '45 1 7 


46 
45 


Rails 18 lengths \% 


16 


03958 


25-2643 


44 






7 


03987 


25-0797 


43 


Superelevation op '. 


18 


04016 


24-8978 


42 






19 

zo 


04046 
04075 


247185 
24-5417 


4* 

40 


66 feet chain, 20 m. per hour 3f " 


21 


04104 


24-3675 


II 


100 feet chain, 25 m. 


)er hour 4" 


22 


04133 


24-1957 






*3 


04162 


24*0263 


l l 








24 


041 91 


23-8592 


36 


Left-hand 


No. of 


Bight-hand 


^5 
26 


04220 

04250 
04279 
04308 
04337 


23-6945 


35 


Reading 


Chains 


Reading 


27 
28 
29 


23-5320 
23-3717 
23-2136 

23-0576 


34 
33 
32 
3i 


357 36-8' 
355 13-5 


2 
1 


2 23-2' 
4 46-5 


30 


04366 


22-9037 


30 


352 50-3 


H 


7 9-7 


3i 

32 


04395 

04424 


227518 

22*6020 


29 
28 


350 27-0 


2 


9 32-9 


33 


04454 


22-4540 


27 


348 3-8 


2^ 


11 56-2 


34 
35 


04483 
04512 


22*3080 
22-1639 


26 
25 


345 40-6 


2 
3 


14 19*4 


36 


04541 


22-02I7 


24 


343 17-3 


H 


16 42-7 


37 
38 


04570 
04599 


21-8812 

21-7425 


23 
22 


340 54-1 


4 


19 5-9 


39 


04628 


21-6056 


21 


338 30-8 


H 


21 29-1 


40 


04658 


21-4704 


20 


336 7-6 


5 


23 52-4 


4i 

42 


04687 
04716 


21-3368 
21-2049 


*9 
18 


333 44-4 


H 


26 15-6 


43 


04745 


21-0746 


I7 < 


331 21-1 


6 


28 38-9 


44 
45 


04774 
04803 


20-9459 
20-8118 


16 
"5 


328 57-9 


6J 


31 2-1 


46 


04833 


20-6932 


H 


326 34-6 


7 


33 25-3 


47 
48 


04862 
04891 


20-5691 
20-4464 


*3 
12 


324 11-4 


7 1 

'2- 


35 48-6 


49 


04920 


20-3253 


11 


321 48-2 


8 


38 11-8 


50 


04949 


20-2055 


10 


319 24*9 


8* 

9 


40 35-1 


5i 

5* 


04978 
05007 


20-0871 
19-9702 


9 
8 


317 1-7 


42 58-3 


53 
54 
55 


05037 
05066 
05095 


19-8545 
19-7402 
19-6272 


I 

5 


314 38-4 
312 15-2 


10 


45 21-5 
47 44-8 


56 


05124 


19*5155 


4 


309 52-0 


101 


50 8-0 


57 
58 


05153 
05182 


19-4051 
19-2959 


3 

2 


307 28-7 


11 


52 31-3 


I 9 


05212 


19-1879 


I 


305 5-5 


1U 


54 54-5 


60 


05241 
Cotangent 


19-0811 
Tangent 


87 O 


302 42-2 
300 190 


12 


57 17-7 
59 41-0 


87 Degrees 



TABLE III. 



117 





3 Degrees 
















TANGENTIAL ANGLES FOR 




Tangent 


Cotangent 




3 d 


05141 


19-0811 


60' 


CIRCULAR CURVES. 


i 


'05270 


*8-9755 


59 






2 


05299 


18-8710 


58 


700 feet \ 




3 

4 


05328 
05357 


187677 
18-6655 


2 


7 chains [ 


Radii. 


5 


05387 


18-5644 


55 


70 metres ' 




6 


05416 


18*4644 


54 






7 
8 


05445 
05474 


18-3655 
18-2676 


53 
52 


Bends. 




9 

IO 


05503 
05533 


18-1708 
18-0749 


5i 
50 


In one 66 feet chain 3 inches 


II 

IZ 


05562 
05591 


17-9801 
17-8863 


49 
48 


Rails 18 lengths % 


13 


05620 


177934 


4 l 


In one 100 chain 5| 


IS 


05649 
05678 


177015 
17-6105 


46 
45 


.Rails 18 lengths y| 


16 


05708 


17-5205 


44 






17 


05737 


I743I3 


43 


Superelevation of 


18 


05766 


*7"343i 


42 






19 

20 


05795 
05824 


17-2558 
17-1693 


4i 

40 


66 feet chain, 20 m. per hour 3" 


21 


05853 


17-0837 


39 


100 feet chain, 25 m. per hour 3" 


22 
*3 


05883 
05912 


16-9989 
16-9150 


38 

3 Z 












24 


05941 


16-8319 


36 


Left-hand 


No. of 


Right-hand 


25 


05970 


167496 


35 


Reading 


Chains 


Reading 


26 




i6*668i 


34 
33 

32 








27 
28 


05999 
06029 
06058 


16-5873 
16-5074 


357 57-2' 


1 


2 2-8' 


29 


06087 


16-4282 


3i 


355 54-4 


1 


4 5-5 


30 


061 16 


16-3498 


30 


353 51-7 


1* 

2 


6 8-3 


3i 
3 2 


06145 
06175 


16*2721 
16-1952 


29 
28 


351 48-9 


8 11*1 


33 


06204 


16-1189 


Z l 


349 46-1 


3 


10 13-8 


34 
35 


06262 


16-0434 
15-9686 


26 

25 


347 43-4 


12 16-6 


36 


06291 


15-8945 


24 


345 40-6 


H 


14 19-4 





06321 
06350 


15-8211 

157483 


23 
22 


343 37-8 


4 . 


16 22-2 


39 


06379 


15-6762 


21 


341 35-0 


U 


18 24-9 


40 


06408 


15-6047 


20 


339 32-3 


h 


20 27-7 


41 

42 


06438 
06467 


15*5339 
15-4638 


19 
18 


337 29-5 


H 


22 30-5 


43 


06496 


15-3942 


3 


335 26-7 


6 


24 33*3 


44 
45 


06525 
06554 


15*3253 

15-2570 


16 
15 


333 24-0 


*h 


26 36-0 


46 


06584 


15-1893 


14 


331 21-2 


7 


28 38-8 


47 
48 


06613 
06642 


15-1222 

i5'o557 


13 
12 


329 18-4 


71 


30 41-6 


49 


06671 


14-9897 


11 


327 15-6 


8 


32 44*3 


50 


06700 


14-9244 


10 


325 12-9 


8J 

9 


34 47-1 


51 

5* 


06730 
06759 


14-8596 
147953 


9 

8 


323 10-1 


36 49-9 


S3 
54 
55 


06788 
06817 
06847 


147316 
14-6685 
14-6059 


I 

5 


321 7-3 
319 4-5 


10 


38 52-7 
40 55-4 


56 


06876 


14-5438 


4 


317 1*8 


10J 


42 58-2 


57 
58 


06905 
06934 


14-4822 
14-4212 


3 
2 


314 59-0 


11 


45 1-0 


59 


06963 


14-3606 


1 


312 56-2 


14 

12 


47 3-7 


60 


06993 


14-3006 


86 


310 53-5 


49 6-5 




Cotangent 


Tangent 




308 50-7 


124 


51 9-3 


86 Degrees 


Ait 





118 



TABLE III. 



1 


4 Degrees 




j 










TANGENTIAL ANGLES FOR 




Tangent 


Cotangent 




4 of 


06993 


14*3006 


60' 


CIRCULAR CURVES. 


i 


07022 


14-2411 


59 




z 


07051 


14-1820 


58 


800 feet \ 




3 

4 


07080 
071 10 


14-1235 

14-0654 


U 


8 chains Radii. 


5 


07139 


14-0078 


55 


80 metres- 




6 


07168 


13-9507 


54 




7 
8 


07197 

07227 


13-8940 
13-8378 


53 

52. 


Bends. 


9 

IO 


07256 
07285 


13-7820 
13-7267 


5i 

50 


In one 66 feet chain 3^ inches 


ii 

12 


07314 

'7343 


13-6718 

13-6174 


8 


Rails 18 lengths f 


n 


07373 


13-5633 


A l 


In one 100 chain 4f 


14 

15 


07402 
07431 


13-5097 
134566 


46 

45 


Rails 18 lengths ^ 


16 


07461 


13-4038 


44 




7 


07490 


I3-35I5 


43 


Superelevation of Rails. 


18 


07519 


13-2995 


42 




J 9 

20 


07548 
07578 


13-2480 
13-1968 


4i 

40 


66 feet chain, 25 m. per hour 4a" 


21 


07607 


13-1461 


39 


100 feet chain, 25 m. per hour 3" 


22 


07636 
07665 


13-0957 


38 




*3 


1 3 -0457 


3 Z 








24 


07695. 


12*9961 


36 


Left-hand 


No. of 


Right-hand 


2 5 
26 


07724 

07753 
07782 
07812 


12-9469 

12-8980 
12-8495 
12*8014 
127536 


35 

34 
33 

32 


Beading 


Chains 


Reading 


27 
28 


358 12-6' 


1 

t 


1 47-4' 


29 


07841 


3i 


356 25-1 


1 


3 34-8 


30 


07870 


12*7062 


30 


354 37-7 


1* 

2 


5 223 


32 


07899 
07929 


12-6591 
12-6123 


29 

28 


352 50-3 


7 9-7 


33 
34 
35 


07958 
07987 
08017 


12-5659 

12-5199 
12-4742 


26 

25 


351 2-8 
349 15-4 


H 

3 


8 57-1 
10 44-6 


36 


08046 


12-4288 


24 


347 28-0 


H 


12 32-0 


37 
38 


08075 
08104 


12-3837 
12-3390 


23 

22 


345 4-5 


4 


14 19-4 


39 


08134 


12-2946 


21 


343 531 


5 


16 6-8 


40 


08163 


12-2505 


20 


342 5-7 


17 54-3 


4i 

42 


08192 
08222 


12*2067 
12-1632 


19 
18 


340 18-3 


H 


19 41-7 


43 
44 
45 


08251 
08280 
08309 


I2-I200 
I2'077I 
12-0346 


15 


338 30-8 
336 43-4 


6 


21 29-1 
23 16-6 


46 


08339 


II-0923 


14 


334 56-0 


7 


25 4-0 


2 


08368 
08397 


II-9503 
II-9086 


13 
12 


333 8-5 


71 


26 51-4 


49 


08427 


II-8672 


11 


331 21-1 


8 


28 38-9 


50 


08456 


II-826I 


10 


329 33-7 


8J 

9 


30 26-3 


51 

52 


08485 
08514 


1 1 7853 

1 1 7447 


9 
8 


327 46-3 


32 13-7 


53 

54 


08544 
08573 


11-6644 


I 


325 58-8 


H 


34 1-2 


55 


08602 


11-6247 


S 


324 11-4 


10 


35 48-6 


56 


08632 


11-5852 


4 


322 24-0 


10-J- 

11 


37 360 


57 
58 


08661 
08690 


11-5460 

11-5071 


3 

2 


320 36-5 


39 23-4 


12 


08720 


11-4684 


1 


318 49-1 


Hi 

12 


41 10-9 


60 


08749 
Cotangent 


11-4300 
Tangent 


85 


317 1-7 


42 58-3 










315 14-2 


124 


44 45-7 




85 De 


gbees 











TABLE III. 




119 




5 Degrees 














TANGENTIAL ANGUS ; 












Tangent 


Cotangent 






5 o' 


08749 


11-4300 


60' 


CIRCULAR CURVES. 


i 
z 


08778 
08807 


n-39'8 
11-3539 


59 
58 


900 feet \ 


3 
4 


088 j 7 
08866 


11-3163 
11-2788 


U 


9 chains [ Radii. 


5 


08895 


11-2471 


55 


90 metres'' 


6 


08925 


11-2047 


54 




7 
8 


08954 
08983 


11-1680 
HM316 


53 

52 


Bends. 


9 

IO 


09013 
09042 


11-0954 
11-0594 


51 

50 


In one 66 feet chain 2f inches 


II 


09071 


11-0236 


49 


Rails 18 lengths 


12 


09101 
09130 


10-9881 
10-9528 


48 
4 1 


In one 100 chain 4| 


14 
IS 


09159 
09189 


10-9177 
10-8829 


46 
45 


Rails 18 lengths $$ 


16 

17 


09218 
09247 


10-8482 
10-8138 


44 
43 


Superelevation of Rails. 


18 


09277 


10-7796 


42 




19 


09306 


10-7456 


4- 


66 feet chain, 25 m. per hour 4" 


20 


'9335 


107119 


40 


* 


21 


09365 


10-6783 


39 


100 feet chain, 35 m. per hour 5" 


22 
23 


09394 

09423 


1 0-6449 
10-6118 


38 










24 


09453 


10-5788 


36 


Left-hand 


No. of 


Right-hand 


*5 
26 


09482 


10*5461 
10-5136 


35 


Reading 


Chains 


Reading 


095 1 1 


34 








27 


09541 


10*4812 


33 


358 24-5' 


1 

-2- 
1 


1 35-5' 


28 
29 


09570 
09600 


10-4491 
104171 


3* 
3* 


356 49-0 


3 11-0 


30 


09629 


10-3853 


30 


355 13-5 


H 


4 46-5 


3i 

32 


09658 
09688 


10-3538 
10-3224 


29 
28 


353 38-0 


2 


6 22-0 


33 


09717 


10-2912 


% l 


352 2-5 


2i 


7 57-5 


34 
35 


09746 
09776 


10-2602 
10-2294 


26 

25 


350 27-0 


3 


9 33-0 


36 


09805 


10-1987 


24 


348 51-5 


H 


11 8-4 


37 
38 
39 


09834 
09864 
09893 


io-i683 
10-1380 

10-1079 


23 
22 
21 


347 16-0 
345 40-5 


4 

4i 


12 439 
14 19-4 


40 


09923 


10*0780 


20 


344 5-1 


5 


15 54-9 


4i 

42 


09952 
09981 


10*0482 
0-0187 


19 
18 


342 29-6 


H 


17 30-4 


43 


10011 


9-9893 


\l 


340 54-1 


6 


19 5-9 


44 
45 


10040 
10069 


9-9600 
9-9310 


16 
15 


339 18-6 


6i 


20 41-4 


46 


10099 


9-9021 


M 


337 43-1 


7 


22 16-9 


47 
48 

49 


10128 
10158 
10187 


9*8733 

9-8448 
9-8164 


13 
12 
11 


336 7-6 
334 32-1 


n 

8 


23 52-4 
25 27-9 


50 


10216 


9-7881 


10 


332 56-6 


H 


27 3-4 


5i . 
51 


10245 
10275 


9-7600 
97321 


9 

8 


331 21-1 


9 


28 38-9 


53 


10305 


97044 


I 


329 45-6 


H 


30 14-4 


54 
55 


10334 
10363 


9-6768 
9-6493 




S 


328 10-1 


10 


31 49-8 


56 


10393 


9-6220 


4 


326 34-6 


10J 


33 253 


3 

59 


10422 
10452 
10481 


9' 5949 
9-5679 
9-5410 


3 

z 
1 


324 59-1 
323 23-7 


11 


35 0-8 

36 36-3 


60 


10510 


9 , 5*43 


84 


321 48-2 


12 


38 11-8 




Cotangent 


Tangent 




320 12-7 


m 


39 47-3 


84 Degrees 







120 



TABLE III. 



6 Degrees 





Tangent 


Cotangent 




6 d 


10510 


9'5H3 


60' 


i 


10540 


9-4878 


59 


2 


10569 


9-4614 


58 


3 


10599 


9"435i 


H 


4 


10628 


9-4090 


56 


5 


10658 


9-3830 


55 


6 


10687 


9"3572 


54 


7 


10716 


9*3315 


53 


8 


10746 


9-3059 


52 


9 


10775 


9-2805 


5i 


IO 


10805 


9' 2 553 


50 


ii 


10834 


9-2301 


49 


12 


10863 


9-2051 


48 


*3 


10893 


9-1802 


4 l 


14 


10922 


9^555 


46 


15 


10952 


9-1309 


45 


16 


10981 


9-1064 


44 


17 


iioii 


9-0821 


43 


18 


1 1040 


9-0578 


42 


19 


1 1070 


9-0337 


4i 


20 


11099 


9-0098 


40 


21 


11128 


8-9859 


39 


22 


11158 


8-9622 


38 


23 


11187 


8-9386 


n 


24 


11217 


8-9152 


36 


25 


11246 


8-8918 


35 


26 


1 1276 


8-8686 


34 


27 


11305 


8-8455 


33 


28 


"335 


8-8225 


32 


29 


1 1 364 


8-7996 


31 


30 


"394 


8-7768 


30 


Ji 


11423 


87542 


29 


32 


"453 


87317 


28 


33 


1 1482 


87093 


27 


34 


11511 


8-6870 


26 


35 


11541 


8-6648 


25 


36 


"570 


8-6427 


24 


37 


11600 


8-6207 


23 


38 


1 1629 


8-5989 


22 


39 


11659 


8-5771 


21 


40 


1 1688 


8-5555 


20 


4i 


II7I8 


8-5340 


19 


42 


'"747 


8-5125 


is 


43 


'"777 


8-4912 


17 


44 


11806 


8-4700 


16 


45 


11836 


8-4489 


15 


46 


1 1 865 


8-4279 


H 


47 


1 1 895 


8-4070 


13 


48 


1 1924 


8-3862 


12 


49 


'"954 


8-3655 


11 


5o 


1 1983 


8-3449 


10 


5i 


12013 


8-3244 


9 


52 


12042 


8-3040 


8 


53 


12072 


8-2837 


7 


54 


12101 


8-2635 


6 


55 


I2T3I 


8-2434 


5 


56 


12x60 


8-2234 


4 


57 


12190 


8-2035 


3 


58 


12219 


8-1837 


. 2 


59 


12249 


8-1639 


I 


60 


12278 


8-1443 


83 




Cotangent 


Tangent 





83 Degrees 



TANGENTIAL ANGLES FOR 
CIRCULAR CURVES. 

1000 feet \ 
10 chains \ Radii. 
100 metres) 

-Bends. 
In one 66 feet chain 2| inches 

Rails 18 lengths -f 
In one 100 , y chain 3| 

Rails 18 lengths 

Superelevation of Rails. 
66 feet chain, 30 m. per hour 5" 
100 feet chain, 35 m. per hour 4a" 



Left-hand 
Reading 



358 c 

357 

355 

354 

352 

351 

349 

348 

347 

345 

344 

342 

341 

339 

338 

337 

335 

334 

332 

331 

329 

328 

327 

325 

324 



34-1' 

8-1 
42-2 
162 
50-3 
24-3 
58-4 
32-4 

6-5 
40-6 
14-6 
49-7 
22-7 
56-8 
30-8 

4-9 
38-9 
13-0 
47-1 
21-1 
55-2 
29-2 

3-3 
37-3 
11-4 



No. of 
Chains 



n 



9 l 



3J 



H 



6 

6i 

7 

n 

8 

8* 

9 

10 

101 

11" 

111- 

12 

12J 



Right-hand 
Reading 



25-9' 
51-9 

17-8 

43-8 

9-7 



8 35-7 

10 1-6 

11 27-5 

12 53-5 

14 19-4 

15 45-4 

17 11-3 

18 37-3 

20 3-2 

21 29-1 

22 55-1 

24 21-0 

25 47'0 

27 13-0 

28 38-9 

30 4-8 

31 30-8 

32 56-7 

34 22-6 

35 48-6 









TABLE III. 






121 




7 Dbgbsbi 














TANGENTIAL ANGLES FOR 










7 C 


Tangent 
12278 


Cotangent 
8-1443 


60' 


CIRCULAR CURVES. 


i 

2 


12308 
12338 


8-1248 
8-1053 


59 

58 


1500 feet \ 


3 

4 


12367 
12397 


8-o86o 
8-0667 


li 


15 chains 


Radii. 


5 


12426 


8-0475 


55 


150 metres 




6 


12456 


8*0284 


54 




7 


12485 


8-0094 


*, 53 


Bends. 


8 


12515 


7-9905 


52 




9 

10 


12544 
12574 


7-9717 

7-9530 


51 

50 


In \ 66 feet chain If inches 


ii 


12603 


7*9343 


49 


Rails 18 lengths T 7 g- 


12 

3 


12633 
12662 


7-9158 
7'8973 


48 
4 Z 


In \ 100 chain 2 


4 
5 


12692 

12722 


7-8789 
7-8606 


46 

45 


Rails 18 lengths & 


16 
7 


12751 
12781 


7-8424 
7-8242 
7-8062 


44 
43 


Superelevation of Rails. 


18 


12810 


42 




19 

20 


12840 
12869 


77882 
7-7703 


4i 
40 


66 feet chain, 35 m. per hour 4" 


21 


12899 


77525 


39 


100 feet chain, 35 m. per hour 3" 


22 
23 


12929 
12958 


77348 
77171 


38 
3 Z 










24 


12988 


7-6995 





Left-hand 


No. of 


Right-hand 


*5 

26 

27 

28 

29 


13017 


7-6820 
7-6646 
7 - 6473 
7-6300 
7-6128 


Reading 


Chains 


Reading 


13047 
13076 
13106 
13136 


34 
33 
32 
31 


359 2-7' 
358 5-4 


1 
1 


57-3' 
1 54-6 


30 


13165 


7'5957 


30 


357 8-1 


1* 


2 51-9 


31 

31 

33 


13195 
13224 
13254 


7"5787 
7-5617 
7'5448 


29 
28 


356 10-8 
355 13-5 


2 

n 


3 49-2 

4 46-5 


34 
35 


13284 
133*3 


7-5280 
7'5"3 


26 
25 


354 16-2 


3 


5 43-8 


36 


'3343 


7-4946 


24 


353 18-9 


n 


6 41-1 


37 


13372 


7-4780 
7-4615 
7-4450 


23 


352 21-6 


4 


7 38-4 


38 
39 


13402 
13432 


22 
21 


351 24-3 


4i 


8 35-6 


40 


1 3461 


7-4287 


20 


350 27-0 


5 


9 32-9 


4i 

42 


13491 
13521 


7-4123 
7-3961 


19 

18 


349 29-7 


5i 


10 30-2 


43 


13550 


7"3799 


15 


348 32-4 


6 


11 275 


44 
45 


13580 
13609 


7-3638 
7' 3478 


347 35-1 


*h 


12 24-8 


46 


13639 


7-3318 


14 


346 37-8 


7 


13 22-1 


47 
48 
49 


13669 
13698 
13718 


7-3160 
7-3001 
7-2844 


13 
12 
11 


345 40-6 
344 43-2 


n 

8 


14 19-4 

15 1G-7 


50 


13758 


7-2687 


10 


343 46-0 


8i 


16 14-0 


5* 

52 


13787 
13817 


7-253 
7'*375 


9 
8 


342 48-7 


9 


17 113 


53 


13847 


7-2220 


I 


341 51-4 


H 


18 8-6 


54 
55 


13876 
13906 


7-2066 
7-1912 


6 
5 


340 54-1 


10 


19 5-9 


56 


13935 


7-1759 


4 


339 56-8 


101 


20 3-2 


57 
58 
59 


13965 

'13995 
14024 


7-1007 
7"i455 
7-1304 


3 

2 
1 


338 59-5 
1 338 2-2 


11 
ill 


21 0-5 
21 57-8 


60 


14054 


7-1153 


82 


337 4-9 


12 


22 55-1 




Cotangent 


Tangent 




336 7-6 

1 


in 


23 52-4 


| 


82 Di 


XJRF.ES 




-**- 2 





122 






TABLE III. 








8 Degrees 














TANGENTIAL ANGLES FOR 
CIRCULAR CURVES. 


8 o' 


Tangent 
14054 


Cotangent 
7-1153 


60' 


z 


14084 
14113 


7-1003 
7-0854 


59 

58 


2000 feet \ 


3 

4 


14143 
4<7J 


7-0705 
7'557 


s l 
56 


20 chains [ Radii. 


5 


14202 


7-0410 


ss 


200 metres f 


6 


14232 


7-0263 


54 




7 


14262 


7-0117 


53 


Bends. 


8 


14291 


6-9971 


52 




9 

IO 


14321 
i435i 


6-9826 
6-9682 


51 

50 


In one 66 feet chain 5 inches 


ii 


14381 


6-9538 


49 


Rails 18 lengths T -% 


12 


14410 
14440 


6-9395 
6*9252 


48 
4 Z 


In one 100 chain 7^ 


"4 

IS 


14470 
14499 


6*9110 
6-8968 


46 

45 


Rails 18 lengths \ 


16 
7 


14529 
14559 


6-8827 
6-8687 


44 
43 


Superelevation of Rails. 


18 


14588 


6-8547 


42 




19 


14618 


6-8408 


41 


66 feet chain, 35 m. per hour 21 " 


20 


14648 


6-8269 


40 


* 


21 


14677 


6-8131 


39 


100 feet chain, 35 m. per hour 2" 


22 

23 


14707 
14737 


67993 
6-7856 


38 
3 1 










24 


14767 


67719 


36 


Left-hand 


No. of 


Right-hand 


25 
26 
27 


14796 

14826 
14856 


6-7583 

6-7448 
67313 


35 


Reading 


Chains 


Reading 


34 
33 


358 34-1' 


1 


1 25-9' 


28 
29 


14886 
14915 


67178 
67044 


32 
31 


357 8-1 


2 


2 51-9 


30 


14945 


6-6911 


30 


355 42-2 


3 


4 17-8 


31 

32 


14975 
15005 


6-6778 
6-6646 


29 
28 


354 162 


4 


5 43-8 


33 


15034 


6-6514 


27 


352 50-3 


5 


7 9-7 


34 
35 


15064 
15094 


6-6383 
6-6252 


26 
25 


351 24-3 


6 


8 35-6 


36 


15123 


6'6i2i 


24 


349 58-4 


7 


10 1-6 


37 
38 
39 


15153 
15183 
15213 


6-5992 
6*5862 
6-5733 


23 
22 
21 


348 32-4 
347 6-5 


8 
9 


11 27-5 

12 53-5 


40 


15243 


6*5605 


20 


345 40-6 


10 


14 19-4 


4i 

42 


15272 
15302 


6*5477 
6x350 


19 

18 


344 14-6 


11 


15 45-4 


43 


15332 


6-5223 


3 


342 48-7 


12 


17 11*3 


44 
45 


15362 
15391 


6-5096 
6-4971 


16 
15 


341 22-7 


13 


18 37-2 


46 


15421 


6-4845 


14 


339 56-8 


14 


20 3-2 


47 
48 
49 


i545i 
1 548i 
15511 


6-4720 
6-4596 
6-4472 


13 
12 
11 


338 30-8 
337 4-9 


15 
16 


21 29-1 

22 55-1 


5 


15540 


6-4348 


10 


335 38-9 


17 


24 210 


5i 

52 


15570 
15600 


6-4225 
6-4102 


9 
8 


334 13-0 


18 


25 47-0 


53 


15630 


6-3980 


I 


332 47-1 


19 


27 12-9 


54 
55 


15660 
15689 


6-3858 
6-3737 


6 

5 


331 21-1 


20 


28 38-9 


56 


15719 


6-3616 


4 


329 55-2 


21 


30 4-8 


57 
58 

8 


15749 

15779 
15808 


6-3496 
6-3376 
6-3256 


3 

2 


328 29-2 
327 3-3 


22 
23 


31 30-7 

32 56-7 


60 


15838 


6-3137 


8i 


325 37-3 


24 


34 22-6 




Cotangent 


Tangent 




324 11-4 


25 


35 48*6 




81 Di 


GREES 















! 


TABLE III. 




123 




9 Degrees 














TANGENTIAL ANGLES FOR 










9 d 


Tangent 
15838 


Cotangent 
63137 


6V 


CIRCULAR CURVES. 


i 

z 


15868 
15898 


6-3018 
6-2900 


59 
58 


2500 feet \ 


3 

4 


15928 
15958 


6-2782 
6-2665 


3 


25 chains \ Radii. 


5 


15988 


6-2548 


55 


250 metres ) 


6 


16017 


6-Z432 


54 




7 


16047 


6-2316 


53 


Bends. 


8 


16077 


6-220O 


52 




9 

10 


16107 
161J7 

16167 


6-2085 
6-1970 

6-1855 


5i 

5 

49 


In one 66 feet chain 4 inches 


ii 


Rails 18 lengths ^ 


IZ 


16196 
i6zz6 


6-I7 4 I 

6- 1 628 


48 

4 7 


In one 100 chain 6 


*5 


i6z 5 6 
i6z86 


6/1515 
6-i4oz 


46 
45 


Rails 18 lengths T \ 


16 
17 


16316 
16346 


6-1289 
6-1177 


44 
43 


Superelevation of Ralls. 


18 


16376 


6-1066 


42 




19 


16406 


6/0955 


41 


66 feet chain, 35 m. per hour 2|" 


zo 

ZI 


16435 
16465 


6-0844 
6-0733 


40 
39 


100 feet chain, 45 m. per hour 3" 


zz 

23 


16495 
165Z5 


6-0623 
6-0514 


38 










Z4 


16555 


6-0405 


36 


Left-hand 


No. of 


Right-hand 


45 
z6 


16585 


6-0296 


35 


Reading 


Chains 


Reading 


16615 


6*0187 


34 








z 7 


M ^ 45 


6-0079 


33 


358 51-2' 


1 


1 8-7' 


z8 

ZQ 


16674 
16704 


5-997I 
5-9864 


32 
31 


357 42-5 


2 


2 17-5 


JO 


16734 


5*9757 


30 


356 33-7 


3 


3 26-2 


31 

3* 
33 


16764 
16794 
i68z4 


5-9651 
5-9544 
5-9438 


29 

z8 


355 25-0 
354 16-2 


4 
5 


4 350 

5 43-7 


34 
35 


16854 
16884 


5-9333 
5-9228 


z6 
25 


353 7-5 


6 


6 52-5 


36 


16914 


5'9 1Z 3 


24 


351 58-7 


7 


8 13 


37 


16944 


5-9019 


23 


350 50-0 


8 


9 10-0 


38 
39 


16974 
17004 


5-8915 
5-8811 


Z2 
21 


349 41-2 


9 


10 18-8 


40 


17033 


5-8708 


ZO 


348 32-5 


10 


11 275 


4i 
4Z 

43 


17063 
17093 
171Z3 


5-8605 
5 - 85oz 
5*8400 


19 

18 

s 


347 23-7 
346 15-0 


11 
12 


12 36-3 

13 450 


44 
45 


17153 
17183 


5-8Z98 
5-8196 


16 
15 


345 6-2 


13 


14 53-8 


46 


17Z13 


5-8095 


14 


343 57-5 


14 


16 25 


47 


17243 


5'7994 


13 


342 48-7 


15 


17 11-3 


48 
49 


17Z73 
17303 


5-7893 
5-7793 


IZ 

II 


341 40-0 


16 


18 200 


5 


17333 


5-7693 


10 


340 31-2 


17 


19 28-8 


5i 

52 


17363 
17393 


5*7594 
5*7494 


9 
8 


339 22-5 


18 


20 37-5 


53 


17423 


5-7395 


I 


338 13-7 


19 


21 46*3 


54 
55 


17453 
17483 


5-7 2 97 
57199 


6 

5 


337 5-0 


20 


22 55-0 


56 


17513 


57101 


4 


335 56-2 


21 


24 3-8 


57 
58 

I 9 


17543 
17573 
17603 


s 'Tl 
5-6906 

5-6809 


3 
z 
1 


334 47-5 

| 333 38-7 


22 
23 


25 12-5 

26 21-3 


60 


17633 


5 -6 7 iz 


8o 


1 332 300 


24 


27 30-0 




Cotangent 


Tangent 




' 331 21*2 


25 


28 38-8 


80 Degrees 









F 2 



124 



TABLE III. 



10 Degrees 





Tangent 


Cotangent 




io d 


17633 


5-6712 


60' 


i 


17663 


5-6616 


59 


2 


17693 


5-6520 


58 


3 


17723 


5-6424 


S l 


4 


17753 


5-6329 


56 


5 


17783 


5-6234 


55 


6 


17813 


5-6139 


54 


7 


17843 


5-6045 


53 


8 


17873 


5"595i 


52 


9 


17903 


5-5857 


5i 


IO 


17933 


5*5763 


50 


ii 


17963 


5-5670 


49 


IZ 


17993 


5*5577 


48 


I? 


18023 


5*5485 


47 


14 


18053 


5-5392 


46 


*5 


18083 


5-5300 


45 


16 


18113 


5-5209 


44 


*7 


18143 


5-5117 


43 


18 


18173 


5-5026 


42 


*9 


18203 


5*4935 


4i 


20 


18233 


5"4845 


40 


21 


18263 


5 '4754 


39 


22 


18293 


5-4664 


38 


23 


18323 


5*4575 


3 7 


24 


18353 


5*4485 


36 


25 


18383 


5*4396 


35 


26 


1 8414 


5*437 


34 


27 


18444 


5-4219 


33 


28 


18474 


5-4130 


32 


29 


18504 


5-4042 


3i 


30 


18534 


5*3955 


30 


31 


18564 


5*3867 


29 


32 


18594 


5-3780 


28 


33 


18624 


5*3693 


27 


34 


18654 


5*3696 


26 


35 


18684 


5'352o 


25 


36 


18714 


5*3434 


24 


37 


18744 


5*3348 


23 


38 


18775 


5-3263 


22 


39 


18805 


5*3177 


21 


40 


18835 


5-3092 


20 


4i 


18865 


5-3008 


19 


42 


. '18895 


5-2923 


18 


43 


18925 


5-2839 


l l 


44 


18955 


5*2755 


16 


45 


18986 


5-2671 


15 


46 


19016 


5-2588 


14 


47 


19046 


5-2504 


13 


48 


19076 


5-2421 


12 


49 


19106 


5*2339 


11 


50 


19136 


5-2256 


10 


5i 


19166 


5-2174 


9 


52 


19197 


5-2092 


8 


53 


19227 


5-2010 


7 


54 


19257 


5-1929 


6 


55 


19287 


5-1848 


5 


56 


19317 


5-1767 


4 


57 


19347 


5-1686 


3 


58 


19378 


5-1605 


2 


5 9 


19408 


5-1525 


1 


60 


19438 


5*1445 


79 




Cotangent 


Tangent 





79 Degrees 



TANGENTIAL ANGLES FOR 
CIRCULAR CURVES. 

3000 feet \ 

30 chains Y Radii. 
300 metres ) 

Bends. 
In one 66 feet chain 3 inches 
Rails 18 lengths ^\ 
,, 



In one 100 chain 5 



Rails 18 lengths -fa 

Superelevation of Rails. 

66 feet chain, 40 m. per hour 3" 

100 feet chain, 45 m. per hour 2f " 



Left-hand 
Reading 



359 

358 

357 

356 

355 

354 

353 

352 

351 

350 

349 

348 

347 

346 

345 

344 

343 

342 

341 

340 

339 

338 

338 

337 

336 



2*7' 

5-4 

8*1 

10-8 

135 

16-2 

18-9 

21-6 

24-3 

27-0 

29-7 

32-4 

35-1 

37-9 

40-6 

43-3 

46-0 

48-7 

51-4 

54-1 

56-8 

59-5 

2-2 

4-9 

7-6 



No. of 
Chains 



1 

2 

3 

4 

5 

6 

7 

8 

9 

10 

11 

12 

13 

14 

15 

16 

17 

18 

19 

20 

21 

22 

23 

24 

25 



Right-hand 
Reading 





1 

2 
3 
4 
5 
6 
7 
8 
9 

10 

11 

12 

13 

14 

15 

16 

17 

18 

19 

20 

21 

21 

22 

23 



57-3' 
54-6 
51-9 
492 
46-5 
43-8 
41-1 
38-4 
35-7 
33-0 
30-2 
27-5 
24-8 
22-1 
19-4 
16-7 
14-0 
11-3 
8-6 
5-9 
3-2 
0-5 
57-8 
55-1 
52-4 









TABLE III. 




125 




11 Degrees 














TANGENTIAL ANGLES FOR 










11 c/ 


Tangent 
19438 


Cotangent 

5"i445 
5-1365 
5-1286 


60' 


CIRCULAR CURVES. 


I 

2 


19468 
19498 


59 
58 


3500 feet \ 


3 
4 


19529 
19559 


5-1206 
5-1127 


56 


35 chains 


Radii. 


5 


19589 


5-1049 


55 


350 metres 




6 


19619 


5-0970 


54 




7 
8 


19649 
19680 


5-o89Z 
5-0813 


53 

52 


Bends. 


9 

IO 


19710 
19740 


5-0736 
5-0658 


51 

50 


In one 6G feet chain 2-g- inches 


ii 


19770 


5-0580 


49 


Rails 18 n lengths T 3 g ,. 


IZ 


1 9801 


5-0503 


48 




11 


19832 


5-0426 


4 l 


In one 100 chain 4^ 


IS 


1 9861 
1 9891 


5'349 
5-0273 


46 
45 


Rails 18 lengths -|- 


16 


19921 


5-0197 


44 




17 


19952 


5-0120 


43 


Superelevation of Rails. 


18 


19982 


5-0045 


42 




19 

zo 


zooiz 
20042 


4-9969 
4-9894 


41 

40 


66 feet chain, 40 m. per hour 2| // 


1 


20073 


4-9818 


39 


100 feet chain, 45 m. per hour 2|" 


zz 

23 


20103 
20133 


4*9743 
4-9669 


38 










24 


20164 


4*9594 


36 


Left-hand 


No. of 


Right-hand 


25 
26 


20194 


4-9520 
4*9445 


35 


Reading 


Chains 


Reading 




34 








27 

28 


20254 
20285 


4-9372 
4-9298 


33 

32 


359 10-9' 


1 


49*1' 


- 29 


20315 


4-9224 


31 


358 21*8 


2 


1 38-2 


30 


20345 


4-9151 


30 


357 32-7 


3 


2 27-3 


31 

32. 


20376 
20406 


4-9078 
4-9005 


29 
28 


356 43*6 


4 


3 10-4 


33 


20436 


4-8932 


27 


355 54-4 


5 


4 5*5 


34 
35 


20466 

20497 


4-8860 
4-8788 


26 

25 


355 5*3 


6 


4 54-7 


36 


20527 


4-8716 


24 


354 16-2 


7 


5 43-8 


37 
38 


20557 
20588 


4-8644 
4-8572 


23 
22 


353 27-1 


8 


6 32-9 


39 


20618 


4-8501 


21 


352 38-0 


9 


7 22-0 


40 


20648 


4-8430 


20 


351 48-9 


10 


8 11-1 


4i 
42 


20679 
20709 


4*8359 
4-8288 


19 
18 


350 59-8 


11 


9 0-2 


43 


20739 


4*8217 


T I 


350 10-7 


12 


9 49-3 


44 
45 


'20770 
20800 


4-8147 
4-8076 


16 
15 


349 21-6 


13 


10 38-4 


46 


20830 


4-8006 


14 


348 32-4 


14 


11 27-5 


47 
48 


20861 
20891 


4*7936 
4-7867 


13 

12 


347 43-3 


15 


12 16-6 


49 


20921 


4*7797 


11 


346 54-2 


16 


13 5-7 


5 


20952 


4-7728 


10 


346 5*1 


17 


13 54-9 


5i 
Si 


Z0982 
21013 


4'7659 
4*7590 


9 

8 


345 16-0 


18 


14 44-0 


53 
54 
55 


21043 

21073 

21 IO4 


4-7521 
4*7453 
4*7385 


I 

5 


344 26-9 
343 37-8 


19 

20 


15 33-1 

16 22-2 


56 


2II34 


47316 


4 


342 48-7 


21 


17 11-3 


57 
58 


21 164 
2II95 


4-7249 
4-7181 


3 

2 


341 59-6 


22 


18 4 


i 9 


21225 


471 1 3 


1 


341 10-4 


23 


18 49-5 


60 


21256 

Cotangent 


4-7046 
Tangent 


78 


340 21-3 
339 32-2 


24 
25 


19 38 6 

20 27-8 


78 Degrees 



126 






TABLE III. 










12 Degrees 














TANGENTIAL ANGLES FOR 












Tangent 


Cotangent 






12 d 


21256 


47046 


6o / 


CIRCULAR CURVES. 


I 


21286 


4-6979 


11 




2 


21 3 16 


4-6912 


4000 feet 




3 

4 


21347 
21377 


4-6845 

4-6778 


% 


40 chains 


Radii. 


5 


21408 


4-6712 


55 


400 metres 




6 


21438 


4-6645 


54 




7 
8 


21469 
21499 


4'6S79 
4-6513 


53 
52 


Bends. 


9 

IO 


21529 
21559 


4-6448 
4-6382 


5i 

50 


In one 66 feet chain 2 inches 


ii 

12 


21590 
21621 


4-6317 
4-6251 


49 
48 


Rails 18 lengths ft 


13 


2165 1 


4-6186 


47 


In one 100 chain 3f 


*4 


21682 


4-6121 


46 


15 


21712 


4-6057 


45 


Rails 18 lengths ^ 


16 


21743 


4-5992 


44 




7 


21773 


4-5928 


43 


Superelevation of Rails. 


18 


21804 


4-5864 


42 




9 

20 


21834 
21864 


4-5800 
4*5736 


4i 
40 


6Q feet chain, 45 m. per hour 3" 


21 


21895 


4-5672 


39 


100 feet chain, 50 m. per hour 2" 


22 


21925 
21956 


4-5609 


38 




*3 


4'5545 


37 








24 


21986 


4-5482 


36 


Left-hand 


No. of 


Right-hand 


*s 


22017 


4'54 x 9 


35 


Beading 


Chains 


Reading 


26 


22047 
22078 
22108 


4*5356 
4-5294 
4-5231 










27 
28 


34 
33 
32 


359 17-0' 


1 


43-0' 


29 


22139 


4-5169 


3i 


358 34-0 


2 


1 25-9 


30 


22169 


4-5107 


30 


357 51-1 


3 


2 8-9 


3i 

32 


22200 
22231 


4*5045 
4-4983 


3 


357 8-1 


4 


2 51*9 


33 

34 
35 


22261 
22292 

22322 


4-4921 
4-4860 
4-4798 


3 

25 


356 25-1 
355 42*2 


5 

6 


3 34-9 

4 17-8 


36 


22353 


4*4737 


24 


354 59-2 


7 


5 0-8 


37 
38 


22383 
22414 


4-4676 
4-4615 


23 

22 


354 16-2 


8 


5 43*8 


39 


22444 


4*4554 


21 


353 33*2 


9 


6 26*7 


40 


22475 


4*4494 


20 


352 50-3 


10 


7 97 


4i 

42 


22505 
22536 


4*4433 

4*4373 


19 
18 


352 7-3 


11 


7 52*7 


43 
44 
45 


22567 
22597 
22628 


4*4313 

4*42.53 
4*4193 


15 


351 24*3 
350 41-4 


12 
13 


8 35*7 

9 18'6 


46 


22658 


4*4133 


14 


349 58-4 


14 


10 1-6 


47 
48 


22689 
22719 


4*4074 
4-4015 


13 
12 


349 15-4 


15 


10 44-6 


49 


22750 
22781 

2281 1 
22842 


4*3955 
4-3896 

4-3838 

4*3779 


11 


348 32-4 


16 


11 27*5 


50 

5i 

5* 


10 

I 


347 49*5 
347 6-5 


17 

18 


12 10-5 
12 53-5 


53 

54 


22872 
22903 


4-3720 
4-3662 


I 


346 23-5 


19 


13 36-5 


55 


22934 


4-3604 


5 


345 40-6 


20 


14 19-4 


56 


22964 


4*3545 


4 


344 57-6 


21 


15 2*4 


57 
58 


22995 
23026 


4*3487 
4*3430 


3 

2 


344 14-6 


22 


15 45*4 


I 9 


23056 


4*3372 


I 


343 31*6 


23 


16 28*3 


60 


23087 
Cotangent 


4*33*4 
Tangent 


77 


342 48-7 
342 5*7 


24 
25 


17 11-3 
17 54-3 




77 Di 


GREES 











TABLE III. 






127 




13 Degrees 














TANGENTIAL ANGLES FOB 
CIRCULAR CURVES. 


13 o' 


Tangent 
23087 


Cotangent 
4'33i4 


60' 


2 


23 1 17 
23148 


4*3257 
4-3200 


59 
58 


4500 feet \ 


3 

4 


23179 
23209 


4-3142 
4-3085 


S 


45 chains 


Radii. 


5 


23240 


4*3029 


55 


450 metres 




6 


23271 


4-2972 


54 




7 
8 


23314 
23332 


4-2915 
4-2859 


53 

52 


Bends. 


9 

IO 


23363 
23393 


4-2803 
4*2747 


5i 

50 


In one 66 feet chain 2 inches 


ii 


23424 


4-2691 


49 


Rails 18 lengths 


12 

13 


23455 
23485 


4-2635 
4'2579 


48 
4 7 


In one 100 chain 3 


14 
15 


23516 
23547 


4-2523 
4-2468 


46 
45 


Rails 18 lengths *fa 


16 
7 


23578 
23608 


4-2413 
4-2358 


44 
43 


SUPERELEVATION OP RAILS. 


18 


23639 


4-2302 


42 




19 


23670 


4-2248 


4i 


66 feet chain, 45 m. per hour 2$" 


20 


23700 


4-2193 


40 




21 


23731 


4-2138 


39 


100 feet chain, 50 m. per hour 2" 


22 
23 


23762 
23793 


4-2084 
4-2029 


38 
3 l 










24 


23823 


4-1975 


36 


Left-hand 


No. of 


Eight-hand 


25 
26 

27 

28 

29 


23854 
23885 
23916 
23946 
23977 


4-1921 
4-1867 
4-1813 
4-1760 
4-1706 


35 


Beading 


Chains 


Reading 


34 
33 
32 
31 


359 21-8' 
358 43-6 


1 

2 


38-2' 
1 16-4 


30 


24008 


4-1652 


30 


358 5-4 


3 


1 54-6 


31 

32 


24039 
24069 


4* 1 599 
4*1546 


29 
28 


357 27-2 


4 


2 32-8 


33 


24100 


4' '493 


% l 


356 49-0 


5 


3 11-0 


34 
35 


241 3 1 
24162 


4-1440 
4-1387 


26 
25 


356 10-1 


6 


3 49-2 


36 


24193 


4'*335 


24 


355 32-6 


7 


4 27-4 


37 
38 
39 


24223 
24254 
24285 


4-1282 
4-1230 
4-1177 


23 
22 
21 


354 54-4 
354 16-2 


8 
9 


5 5-6 
5 43-8 


40 


24316 


4-1125 


20 


353 38-0 


10 


6 22-0 


4i 

42, 


'24347 
24377 


4-1073 
4-1021 


19 
18 


352 59-8 


11 


7 0-2 


43 


24408 


4-0969 


\l 


352 21-6 


12 


7 38-4 


44 
45 


24439 
24470 


4-0918 
4-0866 


16 
15 


351 43-4 


13 


8 16-6 


46 


24501 


4-0815 


14 


351 5-2 


14 


8 54-7 


47 
48 


24532 
24562 


4-0763 
4-0712 


13 
12 


350 27-0 


15 


9 32-9 


49 


24593 


4-0661 


11 


349 48-8 


16 


10 11-1 


50 


24624 


4-0610 


10 


349 10-6 


17 


10 49-3 


5i 

52 


24655 
24686 


4-0559 
4-0509 


9 
8 


348 32-4 


18 


11 27-5 


53 


24717 


4-0458 


I 


347 54-2 


19 


12 5-7 


54 
55 


24748 
24778 


4-0408 
4*0357 


6 
5 


347 16-0 


20 


12 43-9 


56 


24809 


4-0307 


4 


346 37-9 


21 


13 22-1 


57 
58 


24840 
24871 


4-0257 
4-0207 


3 

2 


345 59-7 


22 


14 0-3 


I 9 


24902 


4-0157 


1 


345 21-5 


24 


14 38-5 


60 


24933 
Cotangent 


4-0107 
Tangent 


76 


344 43-3 
344 5-1 


25 
26 


15 16-7 
15 54-9 


76 Degrees 







128 






TABLE III. 






14 Degrees 


TANGENTIAL ANGLES FOR 


J 


Tangent 


Cotangent 




1 *4 C 

! 


24933 
24964 


4*0107 
4*0058 


60' 
59 


CIRCULAR CURVES. 


2 


24995 


4 , ooo8 


58 






3 


25026 


3-9959 


s l 


5000 feet \ 




4 
5 


25056 
25087 


3-9909 
3*9860 


56 
55 


50 chains \ 


Radii. 


6 


25118 


3*9811 


54 


500 metres > 




7 


25149 


3-9762 


53 






8 


25180 


3-9713 


52 






9 


2521 1 


3-9665 


51 


Bends. 




IO 


25242 


3-9616 


50 






ii 


25273 


3-9568 


49 


In one 66 feet chain 2 inches 


12 

13 


25304 
253H 


3*95'9 
3-947I 


48 

4 Z 


In one 100 chain 3 


14 


25366 


3-9423 


46 






15 


25397 


3*9375 


45 






16 


25428 


3-9327 


44 


Superelevation < 


)F Rails. 


17 


25459 


3-9279 


43 






18 
*9 


25490 
25521 


3-9231 
3-9183 


42 
41 


66 feet chain, 50 m. 


per hour 2f " 


20 


25552 


3-9136 


40 


100 feet chain, 50 m. 


per hour 2" 


21 


25583 


3-9089 


39 






22 


25614 


3-9041 


38 






23 


25645 


3-8994 


n 








24 


25676 


3-8947 


36 


Left-hand 


No. of 


Right-hand 


15 

26 

27 

28 

29 


25707 

25738 
25769 
25800 
25831 


3-8900 

3-8853 
3-8806 
3-8760 
3-8713 


35 


Reading 


Chains 


Reading 


34 
33 
32 
31 


359 25-6' 
358 51-2 


1 

2 


34-4' 
1 8-7 


30 


25862 


3-8667 


30 


358 16-9 


3 


1 43-1 


31 

32 


25893 

25924 


3-8620 

3-8574 


29 
28 


357 42-5 


4 


2 175 


33 


25955 


3-8528 


z i 


357 8-1 


5 


2 51-9 


34 
35 


25986 
26017 


3 -8482 
3-8436 


26 

25 


356 33-7 


6 


3 26-3 


36 


26048 


3-8390 


24 


355 59-3 


7 


4 0-6 


11 


26079 
261 10 


3-8344 
3-8299 


23 

22 


355 25-0 


8 


4 35-0 


39 


26141 


3-8253 


21 


354 50-6 


9 


5 9-4 


40 


26172 


3-8208 


20 


354 16-2 


10 


5 43-8 


4i 

42 


26203 
26235 


3-8162 
3-8117 


19 
is 


353 41-8 


11 


6 18-1 


43 


26266 


3-8072 


l i 


353 75 


12 


6 52-5 


44 

45 


26297 
26328 


3-8027 
3-7982 


16 
15 


352 33-1 


13 


7 26-9 


46 


26359 


37937 


14 


351 587 


14 


8 1-3 


47 
48 


26390 
26421 


3-7893 
3-7848 


13 
12 


351 24-3 


15 


8 35-7 


49 


26452 


3-7803 


11 


350 50-0 


16 


9 10-0 


50 


26483 


3 '7759 


10 


350 15-6 


17 


9 44-4 


5i 

5* 


26546 


37715 
3-7670 


9 

8 


349 41-2 


18 


10 18-8 


53 

54 
55 


26577 
26608 
26639 


3-7626 
3-7582 
37538 


I 

5 


349 6-8 
348 32-4 


19 

20 


10 53-1 

11 27-5 


56 


26670 


3-7494 


4 


347 58-1 


21 


12 1-9 


57 
5 


26701 
26733 


37451 

3-7407 


3 

2 


347 23-7 


22 


12 363 


I 9 


26764 


37363 


1 


346 49-3 


23 


13 10-7 


6q 


26795 
Cotangent 


3-7320 
Tangent 


75 

| 


346 14-9 
345 406 


24 

25 


13 45-0 

14 19-4 




75 De 


GUEES 


1 



TABLE III. 



129 



15 Degrees 






GLES FOR 




Tangent 


Cotangent 




TANGENTIAL AN 


i S o' 

i 


Z6795 
z68z6 


3732o 
37277 


60' 
59 


CIRCULAR CURVES. 


z 


Z6857 


37233 


58 






3 


z6888 


37190 


55 


5500 feet \ 




4 

5 


zfyzo 
Z6951 


37H7 
37104 


55 chains J- 


Radii. 


6 


Z098z 


37061 


54 


550 metres' 




7 


Z701J 


37018 


53 






8 
9 


27044 
^7076 


3-6976 
3 '693 3 


52 
5i 


Bends. 




10 


Z7107 


3-6890 


50 






ii 

IZ 


Z7138 
Z7169 


3*6848 
3-6806 


49 
48 


In one 6G feet chain If inches 


13 
14 


Z7Z01 
z 7 z 3 z 


3-6763 
3-6721 


46 


In one 100 chain 2f 


*5 


Z7z6j 


3-6679 


45 






16 


27294 
Z7jz6 


3-6637 


44 


Superelevation of Rails. 


'7 


3-6595 


43 






18 
19 


27357 
z 73 88 


3-6553 
36512 


42 
4i 


66 feet chain, 50 m. 


3er hour 2"' 


zo 


27419 


3-6470 


40 


100 feet chain, 50 m. 


3er hour 2" 


ZI 


27451 


3*6428 


39 






zz 

23 


z 74 8z 
27513 


36346 


38 
3 Z 












z 4 


27544 


\'%f 


36 


Left-hand 


No. of 


Right-hand 


25 
z6 
z 7 
z8 
z 9 


27576 
Z7607 
27639 

Z770I 


3-6263 

3*6zzz 
3-6181 
3-6140 
3-6099 


35 


Reading 


Chains 


Reading 


34 
33 
32 
3i 


359 28-7' 
358 57-5 


1 

2 


31-2' 
1 2-5 


30 


27732 


3-6058 


30 


358 26-2 


3 


1 33-7 


3i 

3Z 


27764 
27795 


3 '6018 
3-5977 


29 
28 


357 55 


4 


2 5-0 


33 


Z78z6 


3-5937 


Z7 


357 23-7 


5 


2 36-3 


34 
35 


Z7858 
Z7889 


3-5896 
3-5856 


26 
25 


356 52-5 


6 


3 75 


36 


Z79ZI 


3-5815 


24 


356 21-2 


7 


3 38-7 


37 
38 


27952 
27983 


3-5775 
3*5735 


23 

ZZ 


355 50-0 


8 


4 10-0 


39 


'Z8015 


3-5695 
3-5655 


21 


355 18-7 


9 


4 41-3 


40 


28046 


20 


354 47-5 


10 


5 12-5 


4i 

42 


28077 
28109 


3-5615 
3-5576 


19 

18 


354 16-2 


11 


5 43-8 


43 


28140 
28172 
28203 


3-5536 
3-5496 
3-5457 


15 


353 45-0 


12 


6 15-0 


44 
45 


353 13-7 


13 


6 46-3 


46 


Z8Z34 
Z8266 
28297 


3-54I7 


14 


352 42-5 


14 


7 17-5 


47 
48 


3-5378 
3-5339 


13 
IZ 


352 11-2 


15 


7 48-8 


49 


28329 


3-5300 


II 


351 40-0 


16 


8 20-0 


50 


28360 


3-5260 


10 


351 87 


17 


8 513 


5i 

52 


28391 
28423 


3-5221 
3- 5 i8z 


9 
8 


350 37-5 


18 


9 22-5 


53 
54 
55 


28454 
28486 

28517 


3-5I44 
3-5105 
3-5066 


I 

5 


350 6-2 
349 34-9 


19 

20 


9 53-8 
10 25-0 


56 


28549 


3-50Z7 


4 


349 3-7 


21 


10 56-3 


57 
58 


28580 
28612 


3-4989 
3-4950 


3 

2 


348 32-4 


22 


11 27-5 


I 9 


28643 


3-49I2 




348 1-2 


23 


11 58-8 


60 


28675 
Cotangent 


3-4874 
Tangent 


74 


347 29-9 
346 58-7 


24 
25 


12 300 

13 1-3 




74 De 


GREES 









F 3 



130 






TABLE III. 






16 Degbees 


TANGENTIAL ANGLES FOR 




Tangent 


Cotangent 




i6 d 


28675 


3*4874 


60' 


CIRCULAR CURVES. 


i 


28706 


3'483S 


59 




z 


28738 


3*4797 


58 




3 


28769 


3 "4759 


5 I 


6000 feet - 




4 
5 


28801 
28832 


3-4721 
3*4683 


56 

55 


60 chains 


Radii. 


6 


28864 


3*4645 


54 


600 metres - 




7 


28895 


3-4608 


53 




8 


28927 


3*457 


51 




9 


28958 


3*4531 


51 


Bends. 


IO 


28990 


3*4495 


50 




ii 


29021 


3*4457 


49 


In one 66 feet chain If inches 


IZ 

M 


29053 
29084 
291 16 


3-4420 
3-4382 
3*4345 


48 
46 


In one 100 chain 2\ 


IS 


29147 


3-4308 


45 




16 


Z9179 


3-4271 


44 


Superelevation op Rails. 


17 


Z9210 


3*4134 


43 




It 

9 


29242 
29274 


3*4197 
3-4160 


42 
41 


66 feet chain, 50 m. per hour 2" 


zo 


Z9305 


3-4113 


40 


100 feet chain, 50 m. per hour 2" 


ZI 


19337 


3-4086 


39 




zz 
13 


29368 
29400 


3-4050 
3-4013 


38 
3 l 










Z4 


29432 


3*3977 


36 


Left-hand 


No. of 


Right-hand 


*S 
z6 


Z8 
z 9 


19403 


3*394 


35 


Reading 


Chains 


Reading 


29495 
29526 
Z9558 
Z9S9 


3'394 
3*3867 
3-3831 
3*3795 


34 
33 
31 
31 


359 31-3' 
359 2-7 


1 

2 


28*6' 

57*3 


30 


29621 


3*3759 


3 


358 34-1 


3 


1 25*9 


31 

3* 


19653 
29685 


3*3713 
3-3687 


19 

z8 


358 5*4 


4 


1 54-6 


33 


29716 


3-3651 


Z7 


357 36-7 


5 


2 23-2 


34 
35 


29748 
29780 


3-3615 
3-3580 


26 
15 


357 8*1 


6 


2 51-9 


36 


2981 1 


3*3544 


14 


356 39-5 


7 


3 20*5 


37 
38 


29843 
29875 


3-3508 
3*3473 


13 

22 


356 10-8 


8 


3 49-2 


39 


29906 


3*3437 


ZI 


355 42-2 


9 


4 17*8 


40 


29938 


3*3401 


ZO 


355 13-5 


10 


4 46-5 


4* 

42 


29970 
30001 


3-3366 
3*3331 


19 
18 


354 44-9 


11 


5 15-1 


43 
44 
45 


30033 
30065 
30097 


3-3296 
3-3261 
3-3226 


16 

15 


354 16-2 
353 47-6 


12 
13 


5 43-8 

6 12-4 


46 


30128 


3-3191 


14 


353 18-9 


14 


6 41-1 


47 
48 


30160 
30192 


3-3156 
3-3121 


13 

IZ 


352 50-3 


15 


7 9-7 


49 


30224 


3-3086 


II 


352 21-6 


16 


7 38-4 


50 


30255 


3-3052 


IO 


351 53-0 


17 


8 7-0 


5i 

52 


30287 
30319 


3-3017 
3-2982 


9 

8 


351 24-3 


18 


8 35*6 


53 
54 
55 


30351 

30382 
30414 


3-2948 
3-2913 
3-2879 


I 

S 


350 55-7 
350 27-0 


19 

20 


9 4-3 
9 33-0 


56 


30446 


3-2845 


4 


349 58-4 


21 


10 1-6 


57 
58 


30478 
30509 


3-2810 

3-2776 


3 

z 


349 29-7 


22 


10 30-2 


12 


30541 


3-2742 


1 


349 1-1 


23 


10 58-9 


60 


30573 
Cotangent 


3-2708 
Tangent 


73 


348 32-4 
348 3-8 


24 
25 


11 27-5 
11 56*2 


73 Degrees 









TABLE III. 




131 


17 Degrees 


TANGENTIAL ANGLES FOR 




Tangent 


Cotangent 




i 7 d 


30573 


3-2708 


6b' 


CIRCULAR CURVES. 


i 


30605 


3-2674 


59 






z 


30637 


3-2640 


58 






3 


30669 


3-2606 


TL 


6500 feet \ 




4 
5 


30700 
30732 


3-2572 
3-2539 


56 
55 


65 chains \ 


Radii. 


6 


30764 
30796 


3-2505 


54 


650 metres ' 




7 


3-2471 


53 






8 


30828 


32438 


52 






9 


30860 


3-2404 


51 


Bends. 




IO 


30891 


3-2371 


50 






li 


30923 


3-2338 


49 


In one 66 feet chain l inches 


IZ 


'30955 


3-2304 


48 






H 


30987 


3-2271 


4 7 


In one 100 chain 


14 


31019 


3-2238 


46 






15 


31051 


3-2205 


45 






16 


31083 


3-2172 


44 


SUPERELEVATION OP RAILS. 


7 
18 

19 


31114 
3 1 146 
31178 


3-2139 
3-2106 

3-2073 


43 
42 
41 


66 feet chain, 50 m. per hour 2" 


zo 


31210 


3 -2040 


40 


100 feet chain, 50 m. per hour 1 \" 


ZI 


31242 


3-2007 


39 






zz 


31274 
31306 


3-I975 


38 






23 


3*1942 


3 7- 








Z4 


31338 


3-1910 
3-1877 


36 


Left-hand 


No. of 


Right-hand 


*5 


31370 


35 


Reading 


Chains 


Reading 


z6 


31402 
31434 
31466 


3-1845 
3-1812 
3-1780 


34 
33 

32 








z 7 
z8 


359 33-5' 


1 


26-4' 


z 9 


31498 


3-1748 


31 


359 7-1 


2 


52-9 


3 


31530 


3-I7I5 


30 


358 40-7 


3 


1 19-3 


3i 

32 


31562 
31594 


3-1683 
3-1651 


29 
28 


358 14-2 


4 


1 45-8 


33 
34 
35 


31626 

3165 

31690 


3-1619 
3-1587 
3-1555 


z6 

25 


357 47-8 
357 21-3 


5 
6 


2 12-2 
2 38-7 


36 


317" 


3-1523 


24 


356 54-9 


7 


3 5-1 


37 
38 


31754 
31786 


3-1492 
3-1460 


23 

zz 


356 28-4 


8 


3 31-5 


39 


31818 


3-1428 


ZI 


356 2-0 


9 


3 58-0 


40 


31850 


3*1397 
3-1365 
3-1334 


zo 


355 35-5 


10 


4 24-4 


4i 

4Z 


3188Z 
31914 
31946 
31978 
32010 


19 

18 


355 9-1 


11 


4 50-9 


43 
44 
45 


3-1302 
3-1271 
3-1239 


15 


354 42-7 
354 16-2 


12 

13 


5 17-3 
5 43-8 


46 


32042 


3-1208 


14 


353 498 


14 


6 10-2 


47 
48 


32074 
32106 


3-1177 
3-1146 


13 

12 


353 23-3 


15 


6 36-7 


49 


32139 


3-1115 


II 


352 56-9 


16 


7 3-1 


50 


32171 


3-1084 


IO 


352 30-4 


17 


7 29-5 


5i 

5* 


32203 
32235 


3-1053 

3-1022 


9 
8 


352 4-0 


18 


7 56-0 


53 

54 
55 


32267 
32299 
32331 


3-0991 
3-0960 
3-0929 


I 

5 


351 37-6 
351 11-1 


19 
20 


8 22-4 

8 48-9 


56 


32363 


3-0899 


4 


350 44-7 


21 


9 15-3 


57 
58 


32396 

32428 


3-0868 
3-0837 


3 

2 


350 18-2 


22 


9 41-8 


s 


32460 


3 -0807 


1 


349 51-8 


23 


10 8-2 


60 


32492 
Cotangent 


3-0776 
Tangent 


72 


349 25-3 

348 58-9 


24 
25 


10 34-6 

11 1-1 


72 Degrees 



132 






TABLE III. 






18 Degrees 


TANGENTIAL ANGLES FOR 




Tangent 


Cotangent 




i8 o 
i 


32492 
32524 


3-0776 
3-0746 


60' 
59 


CIRCULAR CURVES. 


2 


32556 


3-0716 


58 






3 
4 


32588 
326x0 


3-0685 
3-0655 


9 


7000 feet \ 




5 


32653 


3-0625 


55 


70 chains \ Radii. 


6 


32685 


3-0595 


54 


700 metres ) 




7 


32717 


3-0564 


53 






8 


32749 


3'0534 


52 






9 


32782 


3-0504 


51 


Bends. 




lO 


32814 


3 '0474 


50 






ii 


32846 


3'Q445 


49 


In one 6Q feet chain If inches 


12 

T 3 


32878 
3291 1 


3-0415 
3-0385 


48 

4 7 


In one 100 chain 2 


*4 


32943 


3*0355 


46 






15 


32975 


3-0325 


45 






16 


33007 


3-0296 


44 


Superelevation of Rails. 


17 


33040 


3-0266 


43 






18 
19 


33072 
33104 


3-0237 
3-0207 


42 
41 


66 feet chain, 45 m. per hour l" 


20 
21 


33136 
33168 


3-0178 
3-0148 


40 
39 


100 feet chain, 50 m. per hour 1" 


22 


33201 


3-0119 


38 






23 


33233 


3-0090 


37 








24 


33266 
33298 
33330 


3*oo6i 


36 


Left-hand 


No. of 


Right-hand 


25 
26 


3-0031 

3-0002 
2-9973 
2-9944 


35 

34 
33 
32 


Reading 


Chains 


Reading 


27 
28 


33363 
33395 


359 35-4' 


1 


24-5' 


a* 


33427 


2-9915 


31 


359 11-0 


2 


49-1 


30 


33460 


2-9886 


30 


358 46*3 


3 


1 136 


3i 

32 


33492 
33524 


2-9857 
2-9829 


29 
28 


358 21-8 


4 


1 38-2 


33 
34 
35 


'33557 
33589 
33621 


2-9800 
2-9771 
2'9743 


26 
25 


357 57*2 

357 32'7 


5 
6 


2 2-8 
2 27-3 


36 


33654 
336S6 

33719 


2-9714 


24 


357 8*1 


7 


2 51-9 


37 
38 


2-9685 
2-9657 


23 

22 


356 43-5 


8 


3 16-4 


39 


33751 


2-9628 


21 


356 19'0 


9 


3 41-0 


40 


33783 
33816 
33848 


2-9600 


20 


355 54*4 


10 


4 5-5 


4i 

42 


2-9572 
2-9543 


19 
18 


355 29*9 


11 


4 30-1 


43 

44 
45 


33881 
339 J 3 
33945 


2-9515 
2-9487 
2-9459 


M 

15 


355 5*3 

354 40*8 


12 
13 


4 54-6 

5 192 


46 


33978 


2-9430 


14 


354 16-2 


14 


5 43-8 


47 
48 


34010 
34043 


2*9402 
2-9374 


13 
12 


353 51-7 


15 


6 8-3 


49 
50 


34075 
34108 


2-9346 
2-9318 


11 

10 


353 27'1 
353 2-5 


16 
17 


6 32-9 
6 57-4 


51 

52 


34140 
34173 


2-9290 
2-9263 


9 
8 


352 38-0 


18 


7 22-0 


53 

54 


34205 
34238 


2-9235 
2-9207 


I 


352 13-4 


19 


7 46-5 


55 


34270 


2-9179 


5 


351 48'9 


20 


8 11-1 


56 


34303 


2-9152 


4 


351 243 


21 


8 356 


57 
58 


'34335 

34367 


2-9124 
2-9097 


3 

2 


350 59-8 


22 


9 0-2 


I 9 
60 


34400 

"34433 

Cotangent 


2-9069 

2-9042 

Tangent 


71 


350 35-2 
350 107 
349 46-1 


23 
24 
25 


9 24-8 

9 49-3 

10 13-9 












71 Di 


GREES 











TABLE III. 



133 



! 


19 Degrees 




i 


Tangent 


Cotangenl 




19 o' 


34433 


2-9042 


60' 


I 


34465 


2-9014 


59 


I 


34498 


2-8987 


58 


? 


34530 


2-8959 


57 


4 


34563 


2-8932 


56 


5 


34596 


2-8905 


55 


6 


34628 


2-8878 


54 


7 


34661 


2-8851 


53 


8 


34693 


2-8824 
2-8796 


52 


9 


34726 


51 


IO 


'34758 


2-8769 


50 ' 


ii 


34791 


2-8743 


49 


12 


34823 


2-8716 


48 


13 


34856 


2-8689 


47 


'4 


34889 


2-8662 


46 


15 


34922 


2-8635 


45 


16 


34954 


2-8608 


44 


17 


34987 


2-8582 


43 


18 


35020 


2-8555 


42 


19 


35052 


2-8528 


4i 


20 


35085 


2-8502 


40 


21 


35"8 


2-8475 


39 


22 


35150 
35183 


2-8449 
2-8422 


38 


z 3 


37 


24 


35216 


2-8396 


36 


25 


35248 


2-8370 


35 


26 


35281 


2-8343 


34 


27 


353H 
35346 


2-8317 


33 


28 


2-8291 


32 


29 


35379 


2-8265 


31 


30 


35412 


2-8239 


30 


31 


35444 


2-8213 


29 


31 


35477 


2-8187 


28 


33 


355io 


2-8161 


27 


34 


35543 


2-8135 


26 


35 


35576 


2-8109 


25 


36 


35608 


2-8083 


24 


37 


35641 


2-8057 


23 


38 


35674 


2*8031 


22 


39 


35707 


2-8005 


21 


40 


35740 


2-7980 


20 


4i 


35772 


27954 


19 


42 


35805 


2-7928 


18 


43 


35838 


2-7903 


17 


44 


35871 


27877 


l6 


45 


35904 


2-7852 


15 


46 


'35937 


2-7826 


14 


47 


35969 


2-7801 


13 


48 


36002 


27776 


12 


49 


36035 


2-7750 


II 


So 


36068 


27725 


IO 


5i 


36101 


27700 


9 


52 


36134 


27674 


8 


53 


36167 


2-7649 


7 


54 


36199 


2-7624 


6 


55 


36232 


2-7599 


5 


56 


36265 


27574 


4 


57 


36298 


27549 


3 


58 


36331 


2-7524 


2 


I 9 


36364 


2-7499 


1 


60 


36397 


2-7474 


70 


< 


Cotangent! 


Tangent 






70 De< 


SREES 





TANGENTIAL ANGLES FOR 
CIRCULAR CURVES. 

7500 feet \ 

75 chains l Radii. 
750 metres-' 

Bends. 

In one 66 feet chain 1 inches 
In one 100 chain 2 

SUPERELEVATION OF RAILS. 

66 feet chairi, 45 m. per hour 1" 
100 feet chain, 50 m. per hour 1" 



Left-hand 
Reading 



No. of 

Chains 



359 c 

359 

358 

358 

358 

357 

357 

356 

356 

356 

355 

355 

355 

354 

354 

353 

353 

353 

352 

352 

351 

351 

351 

350 

350 



37-1' 
14-2 
51-2 
28-3 

5-4 
42-5 
19-6 
56-6 
33-7 
10-8 
47-9 
25-0 

2-1 
39-1 
16-2 
53-3 
30-4 

7-5 
44-5 
21-6 
58-7 
35-8 
12-9 
50-0 
27-0 



1 

2 

3 

4 

5 

6 

7 

8 

9 

10 

11 

12 

13 

14 

15 

16 

17 

18 

19 

20 

21 

22 

23 

24 

25 



Right-hand 
Reading 






1 
1 
1 

2 
2 
3 
3 
3 
4 
4 
4 
5 
5 
6 
6 
6 
7 
7 
8 
8 
8 
9 
9 



22-9' 
45-8 

8-7 
31-7 
54-6 
17-5 
40-4 

3-3 
26-3 
49-2 
12-1 
35-0 
57-9 
20-8 
43-8 

6-7 
29-6 
52-5 
15-4 
38-4 

1-3 
24-2 
47-1 
10-0 
32-9 



134 






TABLE III. 






20 Degrees 


TANGENTIAL ANGLES FOR 




Tangent 


Cotangent 




top of 


36397 


a*7474 


6V 






i 


36430 


27449 


3 


CIRCULAR CUR 


2 


36463 


27425 






3 


36496 


27400 


s l 






4 

5 


'< 9 
36562 


*737S 
27350 


56 

55 


Radius 80 chains. 


6 


36595 


27326 


S4 






7 


36628 


27301 


S3 


Bends. 




8 


36661 


27277 


5* 






9 

IO 


36694 
36727 


27252 
27228 


5i 

5 


In one 66 feet chain 1 inch 


ii 

12 


36760 
36793 


27203 
27179 


49 
48 


In one 100 chain 1| 


1J 


36826 


27154 


4 7 






4 


36859 


27130 


46 






IS 


36892 


27106 


45 


Superelevation of Rails. 


16 


36925 


27081 


44 






*7 
IB 


36958 
36991 


27057 
27033 


43 
42 


66 feet chain, 50 m. ] 


)er hour 1" 


19 

20 


37024 
37057 


27009 
2-6985 


4i 
40 


100 feet chain, 50 m. per hour 1" 


21 


37090 


2-6961 


39 






22 
*3 


37123 
37157 


2-6937 
2-6913 


38 












24 


37190 


2-6889 


36 


Left-hand 


No. of 


Right-hand 


*s 

26 


37223 
37256 


2-6865 
2-6841 


35 


Reading 


Chains 


Reading 


34 








27 


37289 


2-6817 


33 


359 38-5' 


1 


21-5 


28 

29 


37322 
*3735S 


2-6793 
2-6769 


3* 
3i 


359 17-0 


2 


430 


30 


37388 


2-6746 


3 


358 55-5 


3 


1 4-4 


3 

32 


37422 

'37455 


2-6722 
2-6698 


2 2 
28 


358 34-1 


4 


1 25-9 


33 


37488 


2-6675 


z l 


358 12-6 


5 


1 474 


34 
35 


37521 
'37554 


2-6651 
2-6628 


26 

15 


357 51-1 


6 


2 8-9 


36 


37687 


2-6604 


24 


357 29-6 


7 


2 30-4 


37 
38 
39 


37620 
37654 
37687 


2-6581 
2-6557 
2-6534 


23 
22 
21 


357 8-1 
356 46-6 


8 
9 


2 51-9 

3 13-4 


40 


37720 


2-6510 


20 


356 25-1 


10 


3 34-9 


4i 

42 


'37754 
37787 


2-6487 
2-6464 


\l 


356 3-6 


11 


3 56-3 


43 


37820 


2-6440 


l l 


355 42-2 


12 


4 17-8 


44 
45 


37853 
37887 


2-6417 
2-6394 


16 
15 


355 20-1 


13 


4 39-3 


46 


37920 


2-6371 


14 


354 59-2 


14 


5 " 0-8 


47 
48 


37953 
37986 


2-6348 
2-6325 


13 
12 


354 37-7 


15 


5 22-3 


49 


38020 


2-6302 


11 


354 16-2 


16 


5 43-8 


50 


38053 


2-6279 


10 


353 54-7 


17 


6 5-3 


51 

52 


38086 
38120 


2-6256 
2-6233 


9 

8 


353 33-2 


18 


6 26-7 


53 
54 
55 


38153 
38186 
38220 


2-6210 
2-6187 
2*6164 


I 

5 


353 11-8 
352 50-3 


19 

20 


6 48-2 

7 9-7 


56 


38253 


2-6141 


4 


352 28-8 


21 


7 31-2 


57 
58 


38286 
38320 


2-6118 
2-6096 


3 

2 


352 7-3 


22 


7 527 


I 9 


38353 


2-6073 


1 


351 45-8 


23 


8 14-2 


60 


38386 
Cotangent 


2-6050 
Tangent 


69 


351 24-3 
351 2-8 


24 
25 


8 35-7 
8 57-1 


69 Degrees 









TABLE III. 




135 


21 Degrees 


TANGENTIAL ANGLES FOR 




Tangent 


Cotangent 




21 O' 


38386 
38420 


2*6050 
2-6028 


60' 
59 


CIRCULAR CURVES. 


z 


38453 


2 '6005 


58 






3 


38487 


2-5983 


57 






4 


38520 


2-5960 


56 


Radius 85 ch 


ains. 


5 


38553 


2-5938 


55 






6 


38587 


2-5915 


54 






7 
8 


38620 
38654 


2-5893 
2-5870 


53 

52 


Bends. 




9 


38687 


2-5848 


51 






IO 


38721 


2-5826 


50 


In one 66 feet chain 1 inch 


ii 

IZ 


38754 
38787 


2-5803 
2-5781 


49 
48 


In one 100 chain If 


J 


38821 


2*5759 


4 Z 






14 


38854 


2*5737 


46 






IS 


38888 


2-5714 


45 


Superelevation of Rails. 


16 


38921 


2-5692 


44 






7 
18 


38955 
38988 


2-5670 
2-5648 


43 
42 


66 feet chain, 50 m. per hour 1" 


9 

ZO 


39022 
39<=55 


2-5626 
2-5604 


4i 

40 


100 feet chain, 50 m. per hour 1" 


ZI 


39088 


2-5582 


39 






2Z 

23 


39122 
39156 


2-5560 
2-5538 


38 

37 












Z4 


39186 


2-5516 


36 


Left-hand 


No. of 


Right-hand 


25 
z6 


39223 
39256 


2*5495 


35 


Reading 


Chains 


Reading 


2'5473 


34 








z 7 


39290 


2-5451 


33 


359 39*8' 


1 


20'2' 


28 
29 


39324 
39357 


2-5429 
2-5408 


32 
3 1 


359 19-5 


2 


40 4 


30 


39391 


2-5386 


30 


358 59-3 


3 


1 0-6 


3i 

3* 


39425 
39458 


2-5364 
2*5343 


29 
28 


358 391 


4 


1 20*8 


33 


39492 


2*5321 


27 


358 18-9 


5 


1 41-1 


34 
35 


39526 
'39559 


2-5300 
2-5278 


26 
25 


357 58-7 


6 


2 1-3 


36 


39593 


2-5257 


24 


357 38-4 


7 


2 21-5 


37 


39626 


2-5235 


23 


357 18-2 


8 


2 41-8 


38 
39 


39660 
39694 


2-5214 
2-5192 


22 
21 


356 58-0 


9 


3 2-0 


40 


39727 


2-5171 


ZO 


356 37-8 


10 


3 22-2 


4i 
42 


39761 
'39795 


2-5150 
2-5128 


19 
18 


356 17-5 


11 


3 42-4 


43 


39829 


2-5107 


l l 


355 57*3 


12 


4 2-6 


44 
45 


39862 
39896 


2-5086 
2-5065 


16 
15 


355 37-1 


13 


4 22-9 


46 


39930 


2*5044 


14 


355 16-9 


14 


4 431 


47 


39963 


2-5022 


13 


354 56-7 


15 


5 3-3 


48 
49 


'39997 
40031 


2-5001 
2-4980 


12 
II 


354 36-4 


16 


5 23-5 


50 


40065 


2*4959 


IO 


354 16-2 


17 


5 438 


51 

52 


40098 
4C132 


2-4938 
2-4917 


9 
8 


353 56-0 


18 


6 4-0 


53 


40166 


2-4896 


7 


353 35-8 


19 


6 24-2 


54 
55 


40200 
40234 


2-4875 
2-4854 


6 

5 


353 15-6 


20 


6 44-4 


56 


40267 


2*4834 


4 


352 55-3 


21 


7 4-7 


57 


40301 


2-4813 


3 


352 35-1 


22 


7 249 


58 
59 


40335 
40369 


2*4792 
2-4771 


z 


352 14-9 


23 


7 45-1 


60 


40403 


2*4750 


68 


351 54-7 


24 


8 5*3 




Cotangent 


Tangent 




351 34-3 


25 


8 25-5 




68 Di 


"GREES 











ia6 




TABLE III. 






22 Degrees 


23 Degrees 


24 Degrees 




Tangent 


Cotangent 


Tangent 


Cotangent 


Tangent 


Cotangent 




o* 


40403 


2-4750 


42447 


2-3558 


44522 


2*2460 


60 


i 


40436 


2-4730 


42481 


2*3539 


44557 


2-2442 


59 


2 


40470 


2-4709 


42516 


2-3520 


44592 


2-2425 


58 


J 


40504 


2-4688 


42550 


2-3501 


44627 


2*2407 


57 


4 


40538 


2-4668 


42584 


2-3482 


44662 


2-2390 


56 


5 


40572 


2-4647 


42619 


2-3463 


44697 


2-2372 


55 


6 


40606 


2-4627 


42653 


2*3444 


44732 


2-2355 


54 


7 


40640 


2-4606 


42688 


2-3425 


44767 


2-2337 


53 


8 


40673 


2-4585 


42722 


2-3406 


44802 


2-2320 


52 


9 


40707 


2-4565 


42756 


2-3388 


44836 


2-2303 


5i 


IO 


40741 


2*4545" 


42791 


2*3369 


44871 


2-2285 


50 


ii 


40775 


2-4524 


42825 


2-3350 


44906 


2-2268 


49 


\% 


40809 


2.4504 


42860 


2-3331 


44941 


2-2251 


48 


13 


40843 


2-4483 


42894 


2-3313 


44976 


2-2233 


47 


*4 


40877 


2-4463 


42928 


2-3294 


4501 1 


2-22l6 


46 


15 


4091 1 


2-4443 


42963 


2-3275 


45046 


2-2I09 


45 


16 


40945 


2-4422 


42997 


2-3256 


45081 


2'2l8l 


44 


7 


40979 


2-4402 


43032 


2-3238 


45116 


2*2l64 


43 


18 


41013 


2-4382 


43066 


2-3219 


45151 


2-2147 


42 


19 


41047 


2-4362 


43 1 01 


2*3201 


45186 


2-2I30 


4i 


20 


41 08 1 


2-4342 


43135 


2-3182 


45221 


2*2113 


40 


21 


41 1 15 


2-4322 


43170 


2-3164 


45256 


2-2006 


11 


22 


41 149 


2-4301 


43204 . 


2-3145 


45291 


2-2079 


23 


41183 


2-4281 


43239 


2-3127 


45326 


2*200I 


3 Z 


24 


41217 


2-4261 


43273 


2-3108 


45362 


2-2044 


36 


*5 


41251 


2-4241 


433o8 


2-3090 


45397 


2-2027 


35 


26 


41285 


2-4221 


43342 


2-3071 


45432 


2-20IO 


34 


*7 


41 3 19 


2-4201 


'43377 


2-3053 


45467 


2-1993 


33 


28 


41353 


2-4181 


43412 


2-3035 


45502 


2*1976 


32 


29 


41387 


2-4162 


43446 


2-3016 


'45537 


2-1959 


3i 


30 


41421 


2-4142 


43481 


2-2998 


45572 


2-1942 


30 


?i 


4H55 


2-4122 


43515 


2-2980 


45607 


2-1926 


29 


3* 


41489 


2-4102 


43550 


2-2961 


45642 


2-1909 


28 


33 


41524 


2-4082 


43585 


2-2943 


45678 


2*1892 


27 


34 


41558 


2-4062 


43619 


2*2925 


45713 


2*1875 


26 


35 * 


41592 


2-4043 


43654 


2-2907 


45748 


2-I858 


25 


36 


41626 


2-4023 


43688 


2-2889 


45783 


2-I84I 


24 


37 


41660 


2-4003 


43723 


2-2870 


45818 


2-I825 


23 


38 


41694 


2-3984 


43758 


2-2852 


45853 


2-1808 


22 


39 


417^8 


2-3964 


43792 


2-2834 


45889 


2*1791 


21 


40 


41762 


2*3944 


43827 


2-2816 


45924 


2*1774 


20 


4i 


41797 


2-3925 


43862 


2-2798 


45959 


2-1758 


19 


42 


4183 1 


2-3905 


43896 


2-2780 


"45994 


2-1741 


18 


43 


41865 


2-3886 


43931 


2-2762 


46030 


2-1724 


l l 


44 


41899 


2-3866 


43966 


2-2744 

2-2726 


46065 


2-1708 


16 


45 


41933 


2-3847 


44001 


46100 


2-1691 


5 


46 


41968 


2-3827 


44035 


2-2708 


46135 


2-1675 


14 


47 


42001 


2-3808 


44070 


2-2690 


461 7 1 


2*1658 


13 


48 


42036 


2-3789 


44105 


2-2673 


46206 


2-1641 


12 


49 


42070 


2-3769 


44140 


2-2655 


46241 


2-1625 


11 


50 


42115 


2-3750 


44174 


2-2637 


46277 


2-1608 


10 


5i 


42139 


2-3731 


44209 


2-2619 


46312 


2-1592 


9 


51 


42173 


2-3711 


44244 


2-2601 


46347 


2-1576 


8 


53 


42207 


2-3692 


44279 


2-2584 


46383 


2-1559 


7 


54 


42242 


2-3673 


44313 


2-2566 


46418 


2-1543 


6 


55 


42276 


2-3654 


44348 


2-2548 


46453 


2*1526 


5 


56 


42310 


2-3634 


44383 


2-2530 


46489 


2-1510 


4 


57 


42344 


2-3615 


44418 


2-2513 


46524 


2*1494 


3 


58 


42379 


2-3596 


44453 


2-2495 


46559 


2*1477 


2 


f 9 


42413 


2-3577 


44488 


2-2477 


46595 


2*1461 


1 


60 


42447 


2-3558 


44522 


2*2460 


46630 


2*14-1-5 







Cotangent 


Tangent 


Cotangent 
66 De 


Tangent 
GREES 


Cotangent 


Tangent 




67 Degrees 


65 


Degrees 


1 







TABLE III. 




137 


25 Degrees 


26 Degrees 


27 Degrees 




Tangent 


Cotangent 


Tangent 


Cotangent 


Tangent 


Cotangent 




d 


46630 


2-1445 


48773 


2*0503 


50952 


1-9626 


60' 


i 


46666 


2*1428 


48809 


2*0487 


50989 


1-9612 


59 


z 


46701 


2*1412 


48845 


2*0472 


51025 


1-9597 


58 


3 


46737 


2*1396 


48881 


2*0457 


51062 


1-9583 


57 


4 


46772 


2*1380 


48917 


2*0442 


51099 


1-9569 


56 


5 


46807 


2*1363 


48953 


2*0427 


'53S 


1-9555 


55 


6 


46843 


2*1347 


48989 


2*0412 


51 172 


1-9541 


54 


7 


46878 


2*1331 


49025 


2*0397 


51209 


I-9527 


53 


8 


46914 


2*1315 


49061 


2*0382 


51246 


1-95I3 


52 


9 


46949 


2*1299 


49097 


2*0367 


51282 


1-9499 


51 


10 


46985 


2*1283 


49133 


2*0352 


51319 


1-9485 


50 


ii 


47020 


2*1267 


49160 
49206 


2*0337 


51356 


i'947i 


49 


12 


47056 


2*1251 


2*0322 


51393 


1-9457 


48 


I? 


47091 


2*1235 


49242 


2*0307 


51429 


1-9443 


47 


14 


47127 


2*1219 


49278 


2*0292 


51466 


1-9430 


46 


IS 


47163 


2*1203 


493H 


2*0277 


51503 


1-9416 


45 


16 


47198 


2*ii87 


4935o 


2*0263 


51540 


1-9402 


44 


17 


47234 


2*1171 


49386 


2*0248 


51577 


1-9388 


43 


18 


47269 


2*1155 


49423 


2*0233 


51613 


1-9374 


42 


19 


47305 


2*1139 


49459 


2*0218 


51650 


1*9360 


41 


20 


4734o 


2*1123 


"49495 


2*0203 


51687 


1-9347 


40 


21 


47376 


2*1107 


49531 


2*Ol89 


51724 


1*9333 


39 


22 


47412 


2*1091 


49567 


2*OI74 


51761 


1-9319 


38 


2.3 


47447 


2*1075 


49604 


2*OI59 


51798 


1-9305 


3 Z 


24 


47483 


2*1059 


49640 


2*OI44 


51835 


1-9291 


36 


25 


47519 


2*1044 


49676 


2*OI30 


51871 


1-9278 


35 


26 


'47554 


2*1028 


49712 


2*0115 


51908 


1-9264 


34 


27 


47590 


2*IOI2 


'49749 


2*OIOO 


51945 


1-9250 


33 


28 


47626 


2*0996 


49785 


2*O086 


51982 


1-9237 


32 


29 


47661 


2*098l 


49821 


2*007I 


52019 


1-9223 


31 


30 


47697 


2*0965 


49858 


2*0056 


52056 


1-9209 


30 


3i 


'47733 


2*0949 


49894 


2*0042 


52093 


1-9196 


29 


32 


47768 


2*0934 


49930 


2*0027 


52130 


1-9182 


28 


33 


47804 


2*09l8 


49967 


2*OOI3 


52167 


1-9168 


27 


34 


47840 


2'0902 


50003 


1*9998 


52204 


1-9I55 


26 


35 


47876 


2*0887 


50039 


1*9984 


52241 


i-9'4i 


25 


36 


4791 1 


2*087I 


50076 


1*9969 


52278 


1-9128 


24 


37 


'47947 


2*0856 


501 12 


1-9955 


52315 


1-91I4 


23 


38 


47983 


2*0840 


50149 


1*9940 


52352 


1-9101 


22 


39 


48019 


2*0824 


50185 


1*9926 


52389 


1-9087 


21 


40 


48055 


2*0809 


50221 


1*9911 


52426 


1*9074 


20 


41 


48090 


2*0793 


50258 


1*9897 


52464 


1*9060 


19 


42 


48126 


2*0778 


50294 


1*9882 


52501 


1*9047 


18 


43 


48162 


2*0763 


50331 


1*9868 


52538 


1*9033 


l l 


44 


48198 


2*0747 


50367 


1*9854 


52575 


1 '9020 


16 


45 


48234 


2*0732 


50404 


1-9839 


52612 


1*9006 


15 


46 


48270 


2*0716 


50440 


1*9825 


52649 


1-8993 


14 


47 


48306 


2*0701 


50477 


1*9810 


52686 


1 -8980 


13 


48 


48341 


2-o685 


50513 


1*9796 


52724 


1*8966 


12 


49 


48377 


2*0670 


50550 


1*9782 


52761 


1-8953 


11 


50 


48413 


2*0655 


50586 


1*9768 


52798 


1-8939 


10 


5i 


48449 


2*0640 


50623 


1*9753 


52835 


1*8926 


9 


52 


48485 


2*0624 


| '50659 


1*9739 


52872 


1-8913 


8 


53 


48521 


2*0609 


| -50696 


1*9725 


52910 


1*8900 


I 


54 


48557 


2-0594 


i "50732 


1*9711 


52947 


1*8886 


6 


55 


48593 


2*0578 


i -50769 


1*9696 


52984 


1*8873 


5 


56 


48629 


2*0563 


! '50806 


1*9682 


53021 


i*886o 


4 


57 


48665 


2*0548 


50842 


1*9668 


53059 


1*8846 


3 


58 


48701 


2*0533 


50879 


1*9654 


53096 


1*8833 


2 


5 Q 


48737 


2*0518 


50915 


1*9640 


-53133 


1*8820 


1 


60 


'48773 


2*0503 


| -50952 


1*9626 


53170 


1*8807 







Cotangent 


Tangent 


Cotangent 


Tangent 


Cotangent 


Tangent 




64. Degrees 


63 Degrees 


62 


Degree 


s 



138 




TABLE III 








28 Degrees 


29 Degrees 


30 Degrees 




Tangent 


Cotangent 


Tangent 


Cotangent 


Tangent 


Cotangent 




o* 


53170 


1-8807 


55430 


1*8048 


'57735 


17320 


60- 


i 


53208 


1-8794 


55468 


1*8025 


57773 


17308 


59 


z 


53245 


1-8780 


55506 


1*8013 


57812 


17297 


58 


3 


53282 


1-8767 


55545 


i*8ooi 


57851 


17285 


S Z 


4 


5332o 


1-8754 


55583 


1*7998 


57890 


17274 


56 


5 


'53357 


1-8741 


55621 


1*797 


57929 


17262 


55 


6 


53395 


1-8728 


55659 


1*7966 


57967 


17250 


54 


7 


53432 


1-8715 


55697 


17954 


58006 


17239 


53 


8 


53469 


1-8702 


"55735 


17941 


58045 


17227 


52 


9 


53507 


1-8689 


'55773 


17929 


58084 


1-7216 


5i 


IO 


53544 


1-8676 


558" 


1 79i 7 


58123 


1-7204 


50 


ii 


53582 


1-8662 


55849 


1*7905 


58162 


17193 


49 


14 


53619 


1-8649 


55888 


1*7892 


58201 


17181 


48 


IJ 


53656 


1-8636 


55926 


1*7880 


58240 


1 71 70 


47 


4 


53694 


1-8623 


55964 


1*7868 


58279 


17158 


46 


15 


53731 


i-86io 


56002 


17856 


58318 


17H7 


45 


16 


53769 


1-8597 


56040 


17844 


58357 


17135 


44 


17 


53806 


i-8;84 


56079 


17831 


58396 


17124 


43 


18 


53844 


1-8572 


561,7 


17819 


58435 


17112 


42 


*9 


53881 


1-8559 


56i55 


17807 


58474 


17101 


41 


20 


53919 


1-8546 


56193 


17795 


58513 


17090 


40 


21 


53957 


1-8533 


56232 


17783 


58552 


17078 


39 


22 


53994 


1-8520 


56270 


17771 


58591 


17067 


38 


23 


54032 


1-8507 


56308 


i'77S9 


58630 


17055 


37 


24 


54069 


1-8494 


56347 


i'7^7 


58669 


17044 


36 


*5 


54107 


1-8481 


56385 


17735 


58708 


17033 


35 


26 


54H5 


1-8468 


56423 


17723 


58747 


1 702 1 


34 


27 


54182 


1-8456 


56462 


17710 


58787 


1 7010 


33 


28 


54220 


1-8443 


T6500 


17698 


58826 


1-6999 


32 


29 


54257 


1-8430 


56538 


1-7686 


58865 


1*6987 


3i 


30 


54295 


1-8417 


56577 


17674 


58904 


1*6976 


3o 


Ji 


54333 


1*8404 


* 5 ? IS 


1-7662 


58943 


1-6965 


29 


32 


54370 


1-8392 


56654 


17650 


58982 


1-6954 


28 


33 


54408 


1-8379 


56692 


17639 


59022 


1-6942 


27 


34 


54446 


1-8366 


56730 


1-7627 


59061 


1*6931 


26 


35 


54484 


1-8353 


56769 


17615 


59100 


1 '6920 


25 


36 


54521 


1-8341 


56807 


17603 


59139 


1*6909 


24 


37 


'54559 


1-8328 


56846 


17591 


59179 


1-6897 


23 


38 


54597 


1-8315 


56884 


17579 


59218 


1-6886 


22 


39 


54635 


1-8303 


56923 


17567 


59257 


1-6875 


21 


40 


54672 


1-8290 


56961 


17555 


59296 


1-6864 


20 


4i 


54710 


1-8277 


57000 


1*7543 


59336 


1-6853 


11 


42 


54748 


1-8265 


57038 


17531 


"59375 


1-6841 


43 


54786 


1-8252 


57077 


17520 


59415 1 


1-6830 


17 


44 


54824 


1*8240 


571 16 


17508 


59454 


1-6819 


16 


45 


54861 


1-8227 


*57 J 54 


1*7496 


'59493 


1*6808 


15 


46 


54899 


1*8215 


5793 


17484 


'59533 


1-6797 


14 


47 


54937 


1-8202 


57231 


17472 


59572 


1*6786 


13 


48 


54975 


I-8I89 


57270 


1*7460 


5961 1 


1*6775 


12 


49 


55013 


I-8I7 7 


57309 


17449 


59651 


1*6764 


11 


5o 


55051 


1*8164 


'57347 


17437 


59690 


1*6752 


10 


5i 


55089 


I*8l52 


57386 


17425 


59730 


1*6741 


9 


52 


55127 


1*8139 


57425 


17413 


59769 


1*6730 


8 


53 


55165 


1*8127 


57463 


17402 


59809 


1*6719 


I 


54 


55202 


1*8114 


57502 


17390 


59848 


1*6708 


55 


55240 


I*8l02 


57541 


17378 


59888 


1*6697 


5 


56 


55278 


1*8090 


'57579 


17367 


59927 


1-6686 


4 


57 


55316 


1*8077 


57618 


17355 


59967 


1-6675 


3 


58 


'55354 


1-8065 


57657 


17343 


60006 


1-6664 


2 


5 


55392 


1*8052 


57696 


i'7332 


-60046 


1-6653 


1 


60 


5543o 


I '8040 


'57735 


17320 


60086 


1-6642 







Cotangent 


Tangent 


Cotangent 


Tangent 


Cotangent 


Tangent 




61 Degrees 


60 Degrees 


59 Degrees 







TABLE III 







139 


31 Degrees 


32 Degrees 


33 Degrees 




Tangent 


Cotangent 


Tangent 


Cotangent 


Tangent 


Cotangent 




o' 


60086 


1-6642 


62486 


1*6003 


64940 


1-5398 


60' 


i 


6012s 


1-6631 


62527 


1-5992 


64982 


1-5388 


59 


z 


60165 


1-6620 


62567 


1-5982 


65023 


'5379 


58 


3 


60204 


1-6609 


62608 


1-5972 


65064 
65106 


1-5369 


57 


4 


60244 


1-6599 


62648 


1-5961 


i"5359 


56 


5 


60284 


1-6588 


62689 


1-5951 


65147 


i'5349 


55 


6 


60323 


1-6577 


62729 


1-5941 


65189 


1-5339 


54 


7 


60363 


1-6566 


62770 


1-5931 


65230 


I-5330 


53 


8 


60403 


1-6555 


62810 


1-5920 


65272 


1-5320 


5* 


9 


60442 


1-6544 


62851 


1-5910 


65313 


1-5310 


5* 


IO 


60482 


1-6533 


62892 


1-5900 


65355 


1-5301 


50 


ii 


60522 


1-6522 


62932 


1-5889 


65396 


1-5291 


49 


IZ 


60562 


1 -651 1 


62973 


1-5879 


65438 


1-5281 


48 


13 


60601 


1-6501 


63013 


1-5869 


65479 


1-5271 


47 


14 


60641 


1-6490 


63054 


1-5859 


65521 


1-5262 


46 


15 


60681 


1-6479 


63095 


1-5849 


65562 


1-5252 


45 


16 


60721 


1-6468 


63135 


1-5838 


65604 


1-5242 


44 


"7 


60761 


1-6457 


6,176 


1-5828 


65646 


1-5233 


43 


18 


60800 


1-6447 


63217 


1-5818 


65687 


1-5223 


42 


*9 


60840 


1-6436 


63258 


1-5808 


65729 


1-5213 


4 T 


zo 


60880 


1-6425 


63298 


1-5798 


65771 


1-5204 


40 


21 


60920 


1-6414 


63339 


1-5787 


65812 


1-5194 


3 


zz 


60960 


1-6404 


63380 


1 '5777 


65854 


1-5185 


*3 


61000 


1-6393 


63421 


1-5767 


65896 


i*5*75 


37 


24 


61040 


1-6382 


63461 


1 '5757 


65937 


1-5165 


36 


25 


61080 


1-6371 


63502 


1*5747 


65979 


1-5156 


35 


26 


61120 


1-6361 


63543 


1*5737 


66021 


1-5146 


34 


27 


61 160 


1-6350 


63584 


1-5727 


66063 


i-5'37 


33 


28 


61200 


1-6339 


63625 


1-5717 


66104 


1-5127 


3* 


29 


61240 


1-6329 


63666 


1-5706 


66146 


1-5117 


3* 


30 


61280 


1-6318 


63707 


1-5696 


66188 


1-5108 


30 


31 


61320 


1-6307 


63747 


1-5686 


66230 


1-5098 


29 


32 


61360 


1-6297 


63788 


1-5676 


66272 


1-5089 


28 


33 


61400 


1-6286 


63829 


1-5666 


66314 


1-5079 


27 


34 


61440 


1-6275 


6387c 


1-5656 


66356 


1-5070 


z6 


35 


61480 


1-6265 


6391 1 


1-5646 


66397 


1-5060 


25 


36 


61520 


1-6254 


63952 


1-5636 


66439 


1-5051 


24 


37 


61560 


1-6244 


63993 


1-5626 


66481 


1-5041 


23 


38 


61600 


1-6233 


64034 


1-5616 


66523 


1-5032 


22 


39 


61640 


1-6223 


64075 


1-5606 


66565 


1*5022 


21 


40 


61680 


1-6212 


64116 


1-5596 


66607 


1-5013 


zo 


4i 


61721 


1 -6201 


64157 


1-5586 


66649 


1-5003 


*9 


4z 


61 761 


1-6191 


64198 


1-5576 


66691 


1-4994 


18 


43 


61 801 


1-6180 


64239 


1-5566 


66733 


1-4984 


5 


44 


61 841 


1-6170 


64281 


1-5556 


66775 


''4975 


16 


45 


61881 


1-6159 


64322 


1-5546 


66817 


1-4966 


*5 


46 


61922 


1-6149 


64363 


1-5536 


66859 


1-4956 


14 


47 


61962 


1-6138 


64404 


1-5526 


66902 


'4947 


13 


48 


62002 


1 -6128 


64445 


1-5516 


66944 


T, 4937 


IZ 


49 


62042 


1-6117 


64486 


1-5507 


66986 


1-4928 


II 


5o 


62083 


1-6107 


64527 


1*5497 


67028 


1-4919 


IO 


5i 


62123 


1-6096 


64569 


1-5487 


67070 


1-4909 


! 


5^ 


62163 


1-6086 


64610 


1 '5477 


671 12 


1-4900 


53 


62204 


1 -6076 


64651 


1-5467 


67155 


1*4890 


I 


54 


62244 


1-6065 


64692 


1 '5457 


67197 


1-4881 


6 


55 


62284 


1-6055 


64734 


1 "5447 


67239 


1-4872 


5 


56 


62325 


1-6044 


64775 


1-5437 


67281 


1-4862 


4 


57 


62365 


1-6034 


64816 


1-5428 


67323 


1-4853 


3 


58 


62406 


1-6024 


64858 


1-5418 


67366 


1-4844 


z 


I? 


62446 


1-6013 


64899 


1-5408 


67408 


1-4834 


1 


62486 


1-6003 


64940 


1-5398 


67450 


1-4825 







Cotangent 


Tangent 


Cotangent 


Tangent 


Cotangent 


Tangent 




I 


58 Degre 


ES 


57 Degrees 


06 Degrees 



140 




TABLE II] 








34 Degrees 


35 Degrees 


36 Degrees 




Tangent 


Cotangt 


Tangent 


Cotangent 


Tangent 


Cotangent 




d 


67450 


1-4825 


70020 


1*4281 


72654 


1-3763 


60 


i 


67493 


1-4816 


70064 


1-4272 


72698 


i'3755 


59 


z 


67535 


1-4807 


70107 


1-4263 


72743 


1-3746 


58 


3 


67577 


1 "4797 


70150 


1-4254 
1-4246 


72787 


1-3738 


57 


4 


67620 


1-4788 


70194 


72832 


1-3730 


56 


5 


67662 


1 "4779 


70237 


1-4237 


72876 


1-3721 


55 


6 


67705 


1-4769 


70281 


1*4228 


72921 


1*37*3 


54 


7 


67747 


1.4760 


70324 


1-4219 


72965 


1-3705 


53 


8 


67789 


1-4751 


70368 


1-4210 


73010 


1-3696 


52 


9 


67832 


1-4742 


7041 1 


1 -4202 


73055 


1-3688 


5i 


IO 


67874 


1-4732 


70455 


1-4193 


73099 


1-3679 


50 


ii 


67917 


1-4723 


70498 


1-4184 


73144 


1-3671 


49 


IZ 


67959 


1-4714 


70542 


'4175 


73188 


1-3663 


48 


ij 


68002 


1-4705 


70585 


1-4167 


73233 


1-3654 


47 


4 


68045 


1-4696 


70629 


1-4158 


73278 


1-3646 


46 


15 


68087 


1-4686 


70673 


1-4149 


73323 


1-3638 


45 


16 


68130 


1-4677 


70716 


1-4140 


73367 


1-3629 


44 


*7 


68172 


1-4668 


70760 


1-4132 


73412 


i'362i 


43 


18 


68215 


1-4659 


70803 


1-4123 


73457 


1-3613 


42 


*9 


68258 


1-4650 


70847 


1-4114 
1-4106 


73502 


1-3605 


4* 


zo 


68300 


1-4641 


70891 


73546 


1-3596 


40 


21 


68343 


1-4632 


70935 


1-4097 


7359 1 


1-3588 


39 


2Z 


68386 


1 -4622 


70978 


1-4088 


73636 


1-3580 


38 


23 


68428 


1-4613 


71022 


1 -4080 


73681 


1-3571 


37 


24 


68471 


1-4604 


71066 


1-4071 


73726 


1-3563 


36 


25 


68514 


1 '4595 


71110 


1-4062 


7377* 


'3555 


35 


26 


68556 


1-4586 


7**53 


1-4054 


738i6 


1*3547 


34 


27 


68599 


1*4577 


71 197 


1-4045 


73861 


1-3538 


33 


28 


68642 


1-4568 


71241 


1-4036 


73906 


**3530 


32 


29 


68685 


'"4559 


71285 


1 '4028 


73951 


1-3522 


3i 


30 


68728 


1-4550 


71329 


1-4019 


73996 


**35*4 


30 


31 


68770 


1-4541 


7*373 


1-4010 


74041 


1-3506 


29 


3* 


68813 


i"453i 


71417 


1-4002 


74086 


''3497 


28 


33 


68856 


1-4522 


71461 


3993 


741 3 1 


1-3489 


27 


34 


68899 


'45'3 


71505 


1-3985 


74176 


1-3481 


26 


35 


68942 


1-4504 


71548 


1-3976 


74221 


**3473 


25 


36 


68985 


'4495 


71592 


1-3967 


74266 


1-3465 


24 


37 


69028 


1-4486 


71636 


"3959 


743" 


1-3456 


23 


38 


69071 


**4477 


71681 


1-3950 


74356 


1-3448 


22 


39 


691 14 


1-4468 


71725 


1-3942 


74402 


1-3440 


21 


40 


69157 


'"4459 


71769 


'3933 


74447 


1-3432 


20 


4i 


69200 


1-4450 


71813 


1-3925 


74492 


1-3424 


*9 


42 


69243 


1-4441 


71857 


1-3916 


74537 


1-3416 


18 


43 


60286 


1-4432 


71901 


1-3907 


74582 


1-3407 


*7 


44 


69329 


1-4423 


7 "945 


1-3899 


74628 


''3399 


16 


45 


69372 


1-4414 


71989 


1-3890 


74673 


1-3391 


*5 


46 


69415 


1-4405 


72033 


1-3882 


747*8 


1*3383 


H 


% 


69458 


J'4397 


72078 


1-3873 


74764 


**3375 


*3 


69501 


1-4388 


72122 


1-3865 


74809 


1*3367 


IZ 


49 


69544 


'4379 


72166 


1-3856 


74854 


1*3359 


11 


50 


69588 


1-4370 


72210 


1-3848 


74000 


i'335* 


10 


51 


69631 


1-4361 


72255 


1-3839 


74945 


-3342 


9 


5* 


69674 


1-4352 


72299 


1-3831 


7499* 


'3334 
1*3326 


8 


53 


69717 


'4343 


7*343 


1-3822 


75036 


7 


54 


69760 


'"4334 


72387 


1-3814 


75082 


I-33I8 


6 


55 


69804 


1-4325 


72432 


1-3806 


75127 


1*3310 


5 


56 


69847 


1-4316 


72476 


1-3797 


75*73 


1-3302 


4 


57 


69890 


1-4308 


72521 


1-3789 


75218 


1-3294 
1-3286 


3 


58 


69934 


1-4299 


7*565 


1-3780 


75264 


z 


59 


69977 


1-4290 


72609 


1-3772 


75309 


1-3278 


1 


60 


70020 


1-4281 


7. 26 54 


1-3763 


75355 


1-3270 







Cotangent 


Tangent 


Cotangent 


Tangent 


Cotangent 


Tangent 




55 Degrees 


54 Degrees 


53 Degrees 







TABLE III. 




141 


37 Degrees 


38 Degrees 


39 Degrees 




Tangent 


Cotangent 


Tangent 


Cotangent 


Tangent 


Cotangent 




d 


75355 


1*3270 


78128 


1-2799 


80978 


1-2348 


DO* 


i 


75401 


1*3262 


78175 


1-2791 

I*2 7 L 

1*2776 


81026 


1-2341 


59 


2 


75446 


1*3254 
1-3246 


78222 


81074 


1*2334 
1*2326 


58 


3 


75492 


78269 


81123 


5 7 


4 


'75537 


1-3238 


78316 


1*2768 


81171 


1-2319 


56 


5 


75583 


1-3230 


78363 


1*2761 


81219 


1*2312 


55 


6 


75629 


1*3222 


78410 


1-2753 


81267 


1-2304 


54 


7 


75675 


1-3214 
1-3206 


78457 


1*2745 


81316 


1-2297 


53 


8 


75720 


78504 


1*2738 


81364 


1*2290 


52 


9 


75766 


1-3198 


78551 


1*2730 


81412 


1*2283 


5i 


IO 


75812 


1-3190 


78598 


1*2722 


8 1 461 


1*2275 


50 


ii 


75858 


1-3182 


78645 


1-2715 


81509 


1*2268 


49 


12 


75904 


M!B 


78692 


1-2707 


81558 


1*2261 


48 


11 


75949 


78739 


1-2700 


81606 


1*2253 


4 7 


14 


75995 


1-3158 


78786 


1-2692 


81654 


1*2246 


46 


15 


76041 


1-3150 


78833 


1-2684 


81703 


1-2239 


45 


16 


76087 


1-3142 


78880 


1 -2677 


81751 


1-2232 


44 


17 


76133 


^3134 
1-3126 


78928 


1-2669 


81800 


I '2224 


43 


18 


76179 


78975 


1-2662 


81849 


1*2217 


42 


9 


76225 


1-3118 


79022 


1-2654 


81897 


I*22IO 


4i 


so 


76271 


1*3111 


79069 


1-2647 


81946 


I-2203 


40 


21 


76317 


1*3103 


791 1 7 


1-2639 


81994 


1-2195 


39 


22 


76363 


1-3095 


79164 


1 -263 1 


82043 


1-2188 


38 


2J 


76409 


1-3087 


7921 1 


1 -2624 
1*2616 


82092 


I*2l8l 


H 


24 


76455 


1-3079 


79259 
79306 


82140 


1*2 166 


36 


25 


76501 


1-3071 


1*2609 


82189 


35 


26 


76548 


1-3063 


79353 


1*2601 


82238 


1*2159 


34 


27 


76594 


1-3055 


79401 


1*2594 


82287 


1*2152 


33 


28 


76640 


1-3047 


79448 


1*2586 


82335 


1*2145 


32 


29 


76686 


1-3040 


79496 


1*2579 


82384 


1*2133 


3i 


30 


76732 


1-3032 


79543 


1*2571 


82433 


1*2130 


30 


?i 


76778 


1-3024 
1-3016 


79591 


1*2564 
1*2556 


82482 


1*2123 


29 


32 


76825 


79638 


82531 


I*2Il6 


28 


33 


76871 


1*3008 


79686 


1*2549 


82580 


1*2109 


Z l 


34 


76917 


1*3000 


79733 


1*2541 


82629 


1*2102 


26 


35 


76964 


1-2993 


79781 


1*2534 


82678 


1*2095 


25 


36 


77010 


1-2985 


79828 


1*2526 


82727 


1*2087 


24 


37 


77056 


1-2977 


79876 


1*2519 


82776 


i *2o8o 


23 


38 


77103 


1-2969 


79924 


1*2511 


82825 


1*2073 


22 


39 


77149 


1-2961 


79971 


1*2504 


82874 


1*2066 


21 


40 


77195 


1-2954 


80019 


1*2496 


82923 


1*2059 


20 


4i 


77242 


1-2946 


80067 


1 '2489 


82972 


1*2052 


19 


42 


77288 


1-2938 


801 1 5 


1*2482 


83021 


1*2045 


18 


43 


77335 


1-2930 


80162 


1*2474 


83070 


1*2037 


x z 


44 


77381 


1-2922 


80210 


1*2467 


83119 


1*2030 


16 


45 


77428 


1-2915 


80258 


1*2459 


83169 


1*2023 


15 


46 


77474 


1-2907 


80306 


1*2452 


83218 


1*2016 


14 


47 


77521 


1*2899 


80354 


1-2444 | 


83267 


1*2009 


13 


48 


77567 


1-2891 


80402 


1*2437 


83316 


I *2002 


12 


49 


77614 


1-2884 


80449 


1*2430 


83366 


i*i995 


II 


50 


77661 


1-2876 


80497 


1*2422 


83415 


1-1988 


IO 


5i 


77707 


1-2868 


80545 


1*2415 ; 


83464 


1-1981 


9 


52 


77754 


1-2860 


80593 


1*2407 


83514 


1*1966 


8 


53 


77801 


1-2853 


80641 


1 -2400 


83563 


J 


54 


77847 


1-2845 


80689 


1 '2393 


83612 


1*1959 


6 


55 


77894 


1-2837 


80737 


1-2385 


83662 


1*1952 


5 


56 


77941 


1-2830 


80785 


1-2378 


837" 


1-1945 


4 


57 


77988 


1-2822 


80834 


1-2371 


83761 


1-1938 


3 


58 


78o34 


1*2814 


80882 


1*2363 


83810 


1-1931 


2 


5 


78081 


1*2807 


80930 


1*2356 


83860 


1-1924 


1 


60 


78128 


1-2799 


80978 


1*2348 


83909 


1-1917 







Cotangent 


Tangent 


Cotangent 


Tangent 


Cotangent 


Tangent 




52 Degrees 


51 Degrees 


50 Degrees 



142 



TABLE III. 



40 Degrees 


41 Degrees 


42 Degrees 




Tangent 


Cotangent 


Tangent 


Cotangent 


Tangent 


Cotangent 




o' 


83909 


1*1917 


86928 


1-1503 


90040 


1*1106 


60' 


i 


83959 


1*1910 


86979 


1-1496 


90093 


1*1099 


11 


2 


84009 


1-1903 


87030 


1-1490 


90145 


1*1093 


3 


84058 


1-1896 


87082 


1-1483 


90198 


1*1086 


57 


4 


84108 


1-1889 


87133 


1-1476 


90251 


1*1080 


56 


5 


84158 


1-1882 


87184 


1-1469 


90304 


1*1073 


55 


6 


84207 


1-1875 


87235 


1-1463 


90356 


1*1067 


54 


7 


84257 


ri868 


87286 


1-1456 


90409 


1*1060 


53 


8 


84307 


1-1861 


87338 


1-1449 


90462 


1*1054 


5* 


9 


84357 


1-1854 


87389 


i*i443 


90515 


1*1047 


51 


10 


84406 


1-1847 


87440 


1-1436 


90568 


1*1041 


50 


ii 


84456 


1-1840 


87492 


1-1429 


90621 


1*1034 


49 


IZ 


84506 


1-1833 


87543 


1-1422 


90674 


1*1028 


48 


13 


84556 


1-1826 


87594 
87646 


1-1416 


90727 


i* 1022 


4 Z 


14 


84606 


1-1819 


1-1409 


90780 


1*1015 


46 


15 


84656 


1-1812 


87697 


1-1402 


90833 


1*1009 


45 


16 


84706 


1-1805 


87749 


1-1396 


90886 


I'I002 


44 


17 


84756 


1-1798 


87800 


1-1389 


90939 


1*0996 


43 


It 


84806 


1-1791 


87852 


1-1382 


90993 


1*0989 


42 


19 


84856 


1-1784 


87903 


11376 


'91046 


1-0983 


4i 


20 


84906 


I-1777 


87955 


1-1369 


91099 


1*0977 


40 


21 


84956 


1-1770 


88006 


1-1362 


91152 


I-0970 


39 


22 


85006 


1-1763 


88058 


1-1356 


91205 


1*0964 


38 


23 


85056 


1-1756 


88110 


1-1349 


91259 


1*0957 


3 Z 


24 


85106 


1-1749 


88161 


1-1342 


91312 


1*0951 


36 


as 


85156 


1*1743 


88213 


1-1336 


91365 


1*0945 


35 


26 


85207 


1-1736 


88265 


1-1329 


91419 


1-0938 


34 


27 


85257 


1-1729 


88317 


1-1322 


91472 


1*0932 


33 


28 


85307 


1-1722 


88368 


1-1316 


91526 


1-0925 


3* 


29 


85357 


1-1715 


88420 


1-1309 


91579 


1-0919 


31 


30 


85408 


1-1708 


88472 


1-1302 


91633% 


1-0913 


30 


31 


85458 


1-1701 


88524 
88576 


1-1296 


91686 


1-0906 


29 


3a 


85508 


1-1694 


1-1289 


91740 


1*0900 


28 


33 


85559 


1-1687 


88628 


1-1283 


91793 


1-0893 


27 


34 


85609 


1-1680 


8868c 


1-1276 


91847 


1-0887 


26 


35 


85659 


1-1674 


88732 


1-1269 


91901 


I-088I 


*5 


36 


85710 


1-1667 


88784 


1-1263 


91954 


1-0874 


24 


37 


85760 


i- 1660 


88836 


1-1256 


92008 


1-0868 


*3 


38 


85811 


1-1653 


88888 


1-1250 


92062 


1*0862 


22 


39 


85861 


1-1646 


88940 


1-1243 


921 1 5 


1*0855 


21 


40 


85912 


1-1639 


88992 


1-1266 


92169 


1 '0849 


20 


4i 


85962 


1*1632 


89044 
89096 


1-1230 


92223 


1*0843 


19 


42 


86013 


1-1626 


I-I223 


92277 


1*0836 


18 


43 


86064 


1-1619 


89148 


I-I2I7 


92331 


1*0830 


l l 


44 


861 14 


1-1612 


89201 


I-I2IO 


92385 


1*0824 


16 


45 


86165 


1-1605 


89253 


I-I204 


92439 


1*0817 


15 


46 


86216 


1-1598 


89305 


1-1197 


92493 


ro8n 


14 


47 


86266 


1-1591 


89357 


1*1190 


92547 


1*0805 


13 


48 


86317 


1-1585 


89410 


1*1184 


92601 


1*0799 


12 


49 


86368 


1-1578 


89462 


1*1177 


92655 


1*0792 


11 


50 


86419 


1-1571 


89515 


1*1171 


92709 


1*0786 


10 


51 


86470 


1-1564 


89567 


1*1164 


92763 


1*0780 


9 


51 


86520 


1*1557 


89619 


1*1158 


92817 


1*0773 


8 


53 


86571 


1-1551 


89672 


1-1151 


92871 


1*0767 


7 


54 


86622 


1-1544 


89724 


1*1145 


92925 


1 -0761 


6 


55 


86673 


1*1537 


89777 


1*1138 


92979 


1*0755 


5 


56 


86724 


1-1530 


89829 


1*1132 


93034 


1-0748 


4 


57 


86775 


1-1523 


89882 


1*1125 


93088 


1 -0742 


3 


58 


86826 


1-1517 


89935 


1*1119 


93142 


1-0736 


2 


I 9 


86877 


1-1510 


89987 


I*III2 


93197 


1 -0729 


1 


60 


86928 


1-1503 


90040 


1*1106 


93251 


1-0723 







Cotangent 


Tangent 


Cotangent 


Tangent 


Cotangent 


Tangent 




49 Degrees 


48 Degrees 


47 Degrees 



TABLE III. 



143 



43 Degrees 


44 Degrees 




Tangent 


Cotangent 


Tangent 


Cotangent 




d 


93251 


1-0723 


96568 


10355 


6o' 


i 


93305 


1-0717 


96625 


1 -0349 


59 


2 


93360 


1*0711 


96681 


1 -0343 


58 


3 


934H 


1-0704 


96737 


1*0337 


57 


4 


93469 


1-0698 


96793 


1-0331 


56 


5 


93523 


1-0692 


96850 


1-0325 


55 


6 


93578 


1-0686 


96906 


1-0319 


54 


7 


93632 


1-0680 


96963 


1-0313 


53 


8 


93687 


1-0673 


97019 


1-0307 


52 


9 


93742 


1-0667 


97076 


1*0301 


5i 


io 


93796 


ro66i 


97132 


1*0295 


50 


II 


93851 


1-0655 


97189 


1*0289 


49 


12 


93906 


1-0648 


97245 


1*0283 


48 


*3 


93961 


1-0642 


97302 


1*0277 


4 7 


*4 


94015 


1-0636 


97359 


1*0271 


46 


*5 


94070 


1-0630 


97415 


I *0205 


45 


16 


94125 


1-0624 


97472 


1-0259 


44 


17 


94180 


1-0617 


97529 


1-0253 


43 


t 18 


94235 


i-o6ii 


97585 


1-0247 


42 


x 9 


94290 


1-0605 


97642 


1 '0241 


4i 


20 


94345 


1-0599 


97699 


1*0235 


40 


21 


94400 


1-0593 


97756 


1*0229 


39 


22 


94455 


1-0587 


9781 3 


1*0223 


38 


23 


94510 


1-0580 


97870 


1*0217 


3 7 


*4 


94565 


1 -0574 


97927 


1*0211 


36 


25 


94620 


1-0568 


97984 


I '0205 


35 


26 


94675 


1-0562 


98041 


1*0199 


34 


*2 


9473o 


1-0556 


98098 


I*OI93 


33 


28 


94785 


1-0550 


98155 


I*Ol87 


32 


29 


94841 


1*0543 


98212 


1*0181 


3i 


30 


94896 


1-0537 


98269 


1*0176 


30 


31 


9495i 


1-0531 


98326 


1*0170 


3 


32 


95007 


1-0525 


98384 


1 '0164 


33 


95062 


1-0519 


98441 


1-0158 


27 


34 


95117 


1-0513 


98498 


1 -01 52 


26 


35 


95173 


1-0507 


98556 


1-0146 


25 


36 


95228 


1*0501 


98613 


1 -0140 


24 


37 


95284 


1-0494 


98670 


1-0134 


23 


38 


95339 


1 -0488 


98728 


I'OI28 


22 


39 


95395 


1 -0482 


98785 


I*OI22 


21 


40 


9545o 


1 -0476 


98843 


I*OII7 


20 


4i 


955o6 


1-0470 


98900 


I'OIII 


19 


42 


95562 


1 -0464 


98958 


I*0I05 


18 


43 


95617 


1-0458 


99015 


I-0099 


l l 


44 


95673 


1-0452 


99073 


I-0O93 


16 


45 


95729 


1*0446 


991 3 1 


I-0087 


15 


46 


95784 


1*0440 


99188 


1-0081 


14 


47 


95840 


1*0433 


99246 


1*0075 


13 


48 


95896 


1*0427 


99304 


1*0070 


12 


49 


95952 


1*0421 


99362 


1-0064 


11 


50 


96003 


1-0415 


99419 


1-0058 


10 


5i 


96064 


1-0409 


'99477 


1-0052 


9 


51 


96120 


1-0403 


99535 


1 '0046 


8 


53 


96176 


1*0397 


99593 


1*0040 


I 


54 


96232 


1-0391 


99651 


1-0034 


55 


96288 


1-0385 


99709 


1*0029 


5 


56 


96344 


i*o379 


99767 


1*0023 


4 


57 


96400 


1*0373 


99825 


1*0017 


3 


58 


96456 


1*0367 


99883 


I*OOII 


2 


P 


96?'.-. 


7*0361 


99941 


1*0005 


I 


60 


96568 


1*0355 


1*0000 


i-oooo 


Q 




Cotangent 


Tangent 


Cotangent 


Tangent 




46 Degrees 


45 


Degrees 


J 



144 



TABLE IV. 

ANGLES, RADII, AND DISTANCES FOR RAILWAY CROSSINGS. 



Pitch of 
Crossing 


Angle 


Radius 


Distance of 
Point of 

Switch from 
Point of 
Crossing 


Cross-over Road 

Distance of Point of Switch from 

Point of Recurvature, or Half-length 

of Road 


For 6 feet 
between 
Roads 


For 7 feet 

between 

Roads 


For 8 feet 

between 

Roads 


1 in 5 

1 in 6 
1 in 7 
1 in 8 
1 in 9 
1 in 10 
1 in 12 


Deg. Min. 

11 26 
9 32 
8 10 
7 10 
6 21 
5 44 
4 46 


Feet 

237 

341 

464 
603 
768 
938 
1361 


Ft. In. 
47 

56 7 
65 10 
75 2 
84 11 
93 8 
113 1 


Feet 

51 
61 

72 

82 

92 

102 

123 


Feet 

53 
64 
75 
85 
96 
106 
129 


Feet 

55 

67 

78 

89 

100 

111 

135 



145 



SETTING OUT CURVES WITHOUT A 
THEODOLITE, 

ON THE PRINCIPLE OF TANGENTIAL ANGLES, BY TANGENTS AND 
CORRESPONDING OFFSETS, CALCULATED FOR FIELD USE FROM 
THE SINES AND VERSINES OF THE ANGLES AT THE CENTRE. 

To many, even good practical engineers, there is an insuperable objection 
to the use of the Theodolite. For the purpose of setting out curves with- 
out this instrument, the annexed tables have been calculated, so that 
the work may be done on the principle of tangents and tangential 
angles, merely by setting off the offsets from given distances on the 
tangents, such distances corresponding to the proper chainage on the 
curve. There are many engineers who still adhere to the old, very old, 
system of ranging curves by short chords of a chain in length, and then 
offsetting to the curve, and thus bending round at the length of every 
chain ; but all those who have actually done much field work, know how 
tedious and uncertain the system, and no one better than the writer, 
who used it some twenty-five years ago, in setting out many miles of 
curves in a very hilly country. The tables here given do away with all 
uncertainty, and the work may be done rapidly and with accuracy. 

In the accompanying diagram, p. 146, let a b represent a chain's length 
on any circular curve, and let b c be a second chain's length on such curve; 
let d a be tangent to the curve at the point a, and let e be the centre 
of the curve. The angle at the centre b e a is equal to twice the angle 
bad, and, similarly, the angle c e a is equal to twice the angle cad; b f 
is the sine of the angle b e a, and f a is the versine of the same angle ; 
and c g is the sine of the angle c e a, of which g a is the versine. 

The sines b f and c g are parallel to the tangent a d, and the versines 
fa and g a are at right-angles to ad. 

On ad, set off a h, equal to f b, and also h 1 , equal to G e ; now, if from 
h we set off the right-angled offset h b, equal to a f, and from h 1 , the 
right-angled offset h 1 c, equal to a g, we get two points on the curve, viz., 
b and c, each one chain's length from the other ; for b a and c a are each 
equal to one chain. In the right-angled parallelogram b a, b h is equal to 
the versine fa of the angle bea; and also in the right-angled paral- 
lelogram Ci, h'c is equal to the versine a g of the angle c e a. Any 

g2 



146 



SETTING OUT CURVES 



other number of points on the curve might have been obtained in the 
same manner. In the tables here given, the tabular ' tangents ' all cor- 
respond to a h, a h 1 , a h 2 , and a h s , &c. ; and the tabular offsets all cor- 
respond to hb, h'c; h 2 c 1 , h 3 c 2 , for different radii of curves, and 
for points along the curve distant half a chain each from each, so that a 
curve of any radius given in the tables may set out on the ground, with- 
out theodolite, with the greatest facility and with perfect accuracy by 




any one who can chain with care and set off a right-angled offset, both 
simple operations, which even a good ganger is perfectly competent to 
accomplish, so that, with the tangent starting point, and the direction 
of the tangent being given on the ground, much time may often be saved. 
As an example, we will take a curve of 10 chains radius ; referring 
still to the last figure, and to Table IV., let a b be the first chain, b c 
the second, and c c 1 the third chain, &c. &c. ; leaving the half chains out 
of the question for the present, we find the length of the first tangent to 
be 99-8, to which make a h equal ; make a h 1 equal to 198*6, the length of 
the next tangent in the table ; chaining still on in the direction ad, make 



WITHOUT A THEODOLITE. 147 

AH* equal to 295-5 for the length of tangent for the third chain h 2 , and 
then on to h 3 , leaving a mark at 389-4 for the fourth chain at h 8 , &c, &c. 

Keferring now to the column of offsets, make h b equal to 5*0 links, 
which will give the length and direction of the first chain ab; from h 1 set 
off h 1 c at right angles to a d, and mato h 1 c equal to 19*9 links ; this will 
give the length and the direction of the second chain h 1 c. In the next place, 
from h 2 set off h 2 c at right-angles to a d ; from the column of offsets in 
the table, take out 44*7, the length of the offset due to the third chain, to 
which make h 2 c 1 equal ; this will give the length and the direction of 
the third chain cc 1 , and so on until we change the direction of the 
tangent. We now come to the operation of setting out a curve from one 
tangent to the other, as shown in fig. 2 on the next page, in which we 
will suppose the radius of the curve to be still ten chains. It may be 
observed here, as regards the actual meaning of the words ' chain,' and 
' link,' that the' length of chain may be 100 feet, or 100 links = 66 feet, 
or 100 decimetres, it being only necessary, according as we are working 
on one or the other system, to have a chain of the proper length, and a 
ten feet, ten link, or ten decimetre rod, with each unit properly divided 
into tenths, so as to be able to do the work with sufficient accuracy. If, 
for instance, we have a ten ' chain ' curve, then we shall use the ordinary 
66 feet chain and a ten link staff, properly divided ; and if we have a 
curve of 1,000 feet radius, then we shall use the 100 feet chain, and a 
ten feet staff divided into feet and tenths, &c, &c. 

In the figure now referred to, it will be seen that it is here proposed 
to illustrate the two methods of setting out, that is, with and without 
theodolite, both systems being applications of practical mathematics in 
the field : in the one system we set out by angles and chords, and in the 
other by the lineal measurements of the angles only ; both systems will 
bring about exactly the same results if properly carried out. Commencing, 
then, at the very beginning of the work, we measure the angle a c b, and 
divide it by 2, which gives the angle ago; deduct this from 90 and we 
get the angle c o a, to which a c is the tangeftt. 

Let the angle b c a measure 79 36', half of which is 39 48', equal 
too c a ; subtract this from 90, and we shall have 50 12', equal to the 
angle c o a, to which c a is the tangent. The first point we require 
is a; to find this we take out from Table III. the natural tangent 
of 50 12', which is 1*2002 ; this, multiplied by the radius of the curve, 
gives the length of ca, which, measured off from c, fixes the point a; in 
the present case, 1-2002, multiplied by 10, gives 12*002, which, measured 
off along the tangent c a, fixes the point a. 

This preliminary settled, we may proceed with our work of setting out. 
The direction of a c having been carefully determined already, we have 
only to chain on from A to 1', equal to 99-8, leaving there some small 
pig. (as of course we are supposed to do all along), and on to 2', equal 
to 198*6, and to 3', equal to 295-5, and so on to 6', equal to 



148 



SETTING OUT OUBVES 
Fig. 2. 



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WITHOUT A THEODOLITE. 



149 



564-6. We are here getting into obstructions of bushes and broken 
ground, and we will therefore set out a new tangent. Before doing this, 
however, we must set out the offsets which will determine the points on 
the curve. 

From 1' set out l'l, equal to 5'0 ; from 2' set out 2'2, equal to 19*9 ; 

from 3' set out 3'3, equal to 44 - 7 ; and so on to 6', where the 

offset 6'6 will be 1745. It will be unnecessary to observe that the line 
A 6' must be chained perfectly straight, and in line with the tangent a c, 
of which it forms a part, and that each point must be carefully set out 
at its correct length ; also that the offsets must be set off perfectly square 
to the tangent, which should be done with the cross-staff, and, of course, 
that the length must be accurately set out. 

With regard to turning the straight line, or getting a new tangent : 
the setting out has been stopped at the 6th chain, then set the cross- 
staff on the last tangent at 3', and through the point 6 sight out the 
line from 3', through 6, on and beyond 14', according to the distance 

Fig.Z. 




we intend to run out. The chaining is now to be recommenced from 
the point 6; 6, 7', is made equal to 99-8 ; 6, 8', is made equal to 1986 ; 6, 

9', is made equal to 295'5; and so on until we get to 14', 

where the length is made equal to 717*4. The tabular offsets are set off 
in the same manner as already explained, until we get to 14', 14, where 
the length of offset is 235-2. 

Here we propose again to set out a new tangent, and this is done in 
the same way as we did it last ; this time, however, we have set out 8 
additional chains on the curve, therefore set up the cross-staff at 10', and 
sight the new tangent through the point marked 14. 



150 



SETTING OUT CUEYES 



It is, of course, understood that the measurements given above, for the 
lengths of tangents and offsets, are taken from the tabular numbers given 
in the columns of tangents and of offsets in the Table, prepared for a 10 
chain curve, and that these tabular numbers have all been calculated 
from the sines and versines of the angles at the centre of the curve. 

It is a very common occurrence, when setting out work, to meet with 
obstructions on the ground. We have an illustration at fig. 3, where the 
tangent runs into and along the bank of a river. Set out the work from 
1 and 2 as before, and from a, set out a d exactly at right-angles to the 
tangent, and make ad some 8 or 10 feet, as convenient ; in the next 
place, from any point b (carefully sighted on the tangent), set off b c, 
exactly equal to a d ; from 2 set off 2 e, exactly equal to a d and to b c ; 
set up the cross-staff at d, and see that d, e, and c are all three exactly 
in line. From point e we can now set off from e to 3, 4, 5, &c. ; the off- 
sets set off from these points will merely be 8 or 10 feet shorter than they 
would have been otherwise. If the cross-staff is true, and the work is 



Fig. 4. 




carefully done, there will be no error. This method may also be adopted 
where the tangent runs along, or on the wrong side of a fence. 

In fig. 4, we have an illustration of a case requiring even more care 
than the last. Both the curve and the tangent run for 2 or 3 chains 
across a river. From 1, 2, and 3, set out the offsets as before. From 3 
set out 3 b, exactly at right angles to a 8, and observe both the angles 
b 3 a and b 3 8 to ensure that b 3 is really square to the tangent, as other- 
wise the work will be valueless. Make 3 b some 2 or 3 full chains long, so 
that it may be somewhere about equal to 3 c. Having done this, measure 



WITHOUT A THEODOLITE. 151 

the angle 3 b c with the box sextant ; enter the observation in the field 
book, and then measure the angle 3 c b : the two together should make 
up 90 ; if otherwise, the work has been badly done. 

Let the angle 3 b c measure 52 26', and let 3 b be exactly 2 chains. 
From p. 141 (Table III.), take out the natural tangent of 52 26', equal 
to 1*300, and multiply it by 2, and we shall have 260 for the exact length 
of the line 3 c. 

Now, let us suppose that we are setting out a 15 chain curve. By re- 
ferring to the proper Table, it will be found that for a 3, the length of the 
tangent set out, we have 298, which, added to the above 260, gives 558 
for the length from a to c. The next chainage on our tangent is, by 
the Table, equal to 584*1, and the difference between this and 558 is 
equal to 26-1 ; and if on the ground we set out this 26*1 in continuation 
from c, we get the point 6, from which we may set off the offset due to 
the curve, which is 118*4. Through 3 and 6', we shall be able to set 
out a fresh tangent. 

The theory of setting out curves by tangential angles, or by the 
offsets given in the Tables, is very simple ; but in practice, some discretion 
is required in applying the theory, so as to obtain the best results in the 
easiest way. 

In setting out with the theodolite, it is very desirable not to have to 
remove the instrument oftener than is absolutely necessary, and there- 
fore stations should be selected, from which as many stumps as possible 
may be set out at once. 

In the subjoined figure, p. 152, we select a case in point. Curves gene- 
rally run along the sides of hills, so as to diminish the depths of cut- 
tings and heights of embankments ; in the example given, we suppose 
the line to be in cutting. Let a and d be the points of junction with the 
tangents, a being the point from which the curve is to be run towards 
d. Now it will be perceived that a is at the foot of the hill, and that 
there are five hedges to intersect, each of which will considerably impede 
the view, if the instrument be set up at a, unless gaps are cut for every 
stump to be set out ; and this kind of work always occasions a great 
deal of loss of time, unless very tall ranging rods are used, which we 
object to, because they are never held sufficiently upright.* But if, 
instead of being in the hollow at a, the instrument were placed on high 
ground, we should be able to look back, and down upon the work, 
so as to see over the hedges. If, for instance, the instrument were 
placed at b, at the higher ground-level, not only should we be able to 
do this, but obtain also an unimpeded view towards d, and thus, after 
fixing the point b, range out the whole of the curve from one single 
point. 

* The writer, in his practice of setting out works, hardly ever uses ranging rods, 
but prefers short pieces of white lath, which he always intersects close to the ground 
with the cross-hairs of the diaphragm of the theodolite. 

G 3 



152 



SETTING OUT CURVES 



From the plan we take into the field, we can easily ascertain whether 
this point, b, is at 8, 9, or 10 chains on the curve it does not matter 
which. "We will suppose that we select the 10th chain, and what we 
have now to do is to fix the point b, on the ground, from the point of 
junction a, which is at, say, 23 chains and 60 links. 

Now if from this point we can set out the line a b correctly in length 
and direction, point b will be correctly fixed on the. ground. Since the 
junction, a, is at 23 -60, the length of curve, from a to b, should be 
exactly 10-40. 

Fig. 6. 




For a curve of ten chains radius, the tangential angle for 1 chain is 
equal to 2 51-9' (Table III., p. 120); then for a length of 10-40 on 
the curve, the angle cab, to be set out, will be 2 51*9' x 10-40 = 
29 47'6'. This angle will accurately fix the direction a b ; therefore 
set up the theodolite at a, and set out this angle of 29 476'; and as, in 
doing this, we shall be working from right to left on the instrument, 
the reading on the limb will be 3600' minus 29 47'6', equal to 
330 12-4' the instrument being set up with o in the direction of c. 
We now want the length of the straight line a b, which is the chord of 
that portion of the curve. Now, the chord of an angle, or arc, is equal 
to twice the sine of half the angle subtended by such arc, or chord ; 
and the angle at the centre, which is the angle subtended by our arc or 
portion of curve b a, is equal to twice the angle 29 47*6', and we 
have therefore to take twice the sine of this angle. At page 83, we find 



WITHOUT A THEODOLITE. 153 

the sine of 2947' = '49672, and for 2948' = -49697 ; the mean of 
which (more than near enough for our work) will be -49684, equal to 
the sine of our tangential angle, or to the sine of half the angle sub- 
tended by the arc or chord ; and twice this sine multiplied by 2 
equal to '99368, and this multiplied by the ten-chain radius of curve, 
equal to 993"68, 993 links and f. According to the care observed in 
chaining this distance, or the line a b, so will the point b be more or 
less accurately set out on the curve ; and as from this single point, the 
18 stumps on the curve may all be set out without removing the instru- 
ment, it is worth while to measure out this distance as carefully as 
possible. 

We will therefore suppose this portion of the work accomplished, and 
only further remark that it may be carefully carried out in the field in 
a much shorter time than it will take to read this explanation, when 
once the method is well understood. The half-chains have been left 
out in order to avoid confusion in the diagram, but for sharp curves 
these should always be set out. 

The instrument may now be removed to -point b, with the vernier 
clamped to 29 47*6', and the telescope turned on to a. The tangential 
angle, 2 5 19' x -40 (the distance from point A to stump 24), equal to 
1 8-7', and this deducted from 29 47*6' equal to 28 38'9', which is 
the reading for 10 chains (page 120), equal to the distance on the 
curve, from b to 24. To this angle therefore the instrument is set, 
and peg 24 driven at the end of the chain from 23 to 24 ; the in- 
strument will now be set at 27 13' (9| chains), and peg 24| driven 
at the end of 24| chains. The vernier is next set at 25 47' (9 chains), 
and peg 25 driven in line with the centre of the telescope and at the 
end of chain from 24 to 25. The vernier is next made to read 24 21' 
(8| chains), and peg 25| is driven in the line pointed out by the in- 
strument, and at the end of 25| chains, &c, "until we come to reading 
1 25'9', which will fix the stump between 33 and 34 ; and finally the 
vernier is brought to zero, which will fix the direction of the tangent 
to the curve at the point b. 

The telescope is now reversed, or turned over in its standards to set 
out the remainder of the curve. We are now going to read from right 
to left, and we take the column headed ' Left-hand Beading.' The first 
tabular number is 358 341' (| chain), and this will fix the peg at 
34| chains; the next reading is 357 8-1' (1 chain), which will fix ther 
direction at the end of 35th chain, and so on to the end of the curve. 

It will very often be found convenient to set out the whole of a curve 
with the theodolite from a single point in the middle of a curve, which 
may be done in the following manner. 

Keferring to the diagrams at p. 148, it will be seen that c o is the 
secant to either of the equal angles A o c, b o c ; multiply the radius of 
curve by this natural secant, deduct radius, and the remainder will be 



154 SETTING OUT CURVES WITHOUT A THEODOLITE. 

the distance from c, the intersection of the tangents, to the middle of 
the curve ; set np the instrument at c, and lay out a line in the direction 
c o, by dividing the angle acb exactly in two ; on c o, set off the dis- 
tance found, from c to the middle of the curve. This part of the work 
may be very accurately tested, for each of the angles of deflection from the 
middle of the curve to the tangential points a and b, should be found 
equal each to each, and their sum should be equal to the total angle 
of deflection acb, equal to half the external angle at c, which has 
always to be measured in order to set out the points a and b, from 
which the curve begins to deflect from each of the tangents. 

The total angle of deflection, cab, divided by the tangential angle 
for 1 chain, is equal to the length of the curve. We have now all that 
is required to enable us on many occasions to range from the middle of 
the curve every stump towards a and b. As an example, let the radius 
of a curve to be set out = 20 chains ; angle of deflection cab, equal to 
half the external angle at c, = 25-21'-226, half of which equal to 
12 40''613 = angle of deflection from the middle of the curve to either 
point of junction, A or b. 

Tangential angle for 1 chain = 1718 9 = l -25'945, and 12 ~ 40 '' 613 
& 20 l-25'-945 

= 8*85 chains = half length of curve. 

Let the distance from the last full chain stump to the commencement 
of curve measure 60 links ; then we shall have 40 links of curve up to 
the next full chain stump, and the half length of curve = 8 1 85 (0*40 + 8) 
= 0*45 = the distance from point 8 to the middle of the curve. 

The tangential angle due to 40 links = 85''945 x 0'40 = 34'-4. 
8 chains . . = ll-27'-56, 

the sum of which, deducted from the above 12 40' - 613, will leave 38' - 6 
for the tangential angle due to the 45 links from point 8 to the middle 
of the curve. 

Now plant the theodolite at the point ascertained as the middle of the 
curve, set the vernier to the angle of 12 40'*5, and bring the glass to 
bear on the stump at the commencement of the curve ; unclamp and set 
to 12-6'-2 (12-40'-6-34'-4) for the next stump, and then to 
10 40'*2, for the following stump ; and so on to the end of the curve. 



TABLE V. 

TABLE FOR SETTING OUT CURVES WITHOUT THEODOLITE, ON 
THE PRINCIPLE OF TANGENTIAL ANGLES, BY TANGENTS AND COR- 
RESPONDING OFFSETS, CALCULATED FOR PRACTICAL FIELD USE, 
FROM THE SINES AND VERSINES OF THE ANGLES AT THE CENTRES 
OF THE CURVES. 





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166 



CONTRACT EARTHWORK TABLES AND 
MEASURING UP. 

The accompanying Earthwork Tables have been prepared with a view 
of sparing labour and economising time in computations not only of 
great length, but always of considerable importance in railway, road, and 
other contracts, always requiring a great amount of checking before the 
calculations are considered as satisfactory. Having been worked out for 
every six inches in depth, they will be found to produce more accurate, 
and, in contract matters, more satisfactory results, than are usually ob- 
tained. During the last eighteen months the writer has had to take out 
contract quantities of earthwork on some long and heavy lines, and the 
contractors particularly requested that the calculations should be made 
on this system. The tables in ordinary use only give quantities for 
every foot in depth ; those now submitted give the quantities for every 
six inches in depth : and when it is considered that in cuttings, say from 
30 to 35 feet deep, for every six inches in depth the quantities for the 
slopes only are upwards of 180 cubic yards, and for earthworks at 2 to 
1, and for the same depths, the differences are 250 cubic yards, it is not 
surprising that there has almost always been so much dissatisfaction 
in contract matters about earthwork calculations. 

To make this plainer, and at the same time explain the use of the 
tables, let the following few depths of cutting, from portion of a contract 
section, serve as an example. It is not that the most perfect accuracy 
of the tables in ordinary use is questioned ; but they are not carried 
far enough, nor sufficiently detailed. 



# 

Formation, 20 feet ; slopes 


1| to 1 ; 100 feet chain. 


i. 


n. 


ni. 


IV. 


3190\ 
32-40/ 


8059-3 


8059-3 


3205 


34-50 


8496 


8716-2 


33-45 


38-20 


10109 


10105-1 


36-35 


42-43 


11859 


12112-5 


40-31 


46-68 


14309 


14297-7 


44-65 


52-30 


17281 


17279-2 


49-49 


49-42 


17904 


18227-8 


50-82 


49-30 


16968 


17279-2 
106077-0 


49-56 



In the above, Column I. gives the depths of the cutting in feet and 



CONTRACT EARTHWORK TABLES. 167 

decimals, and Column II., the quantities in cubic yards, from the tables 
in ordinary use. Column III gives the quantities in cubic yards, taken 
from the accompanying tables, and due to the mean heights given in 
Column IV. Thus, 31-90 and 32-40 in Column I. give 32-0f> for a mean 
depth in Column IV., and the tabular number in Table VI., for a forma- 
tion width of 20 feet, with 32 feet depth, gives 2370-4 cubic yards ; for 
the slope of 1| to 1, Table VII. gives 5688-9 cubic yards, at the same 
depth of 32 feet, and these two numbers, added together, 8059*3 cubic 
yards, entered in Column III. 

It will be observed of these tables, that the writer has adopted the 
plan of separating the quantities due to the formation width from those 
due to the slopes ; this has enabled him to bring within a very small 
compass tables calculated for every six inches in depth up to 80 feet, 
for 10 different widths at formation, and for 8 different slopes; there is 
no other trouble in making use of them, than to pick out the tabular 
numbers and add them up, and the circumstance of their being calcu- 
lated to half a foot, makes them, in actual contract practice, much more 
accurate than tables calculated by the prismoidal formula for only every 
foot in depth, it being, of course, understood that in making use of these 
tables, it is to be done chain by chain of 100 feet along the length of 
section. 

It is also to be observed that the plan adopted of separating the forma- 
tion quantities from the slope quantities, offers great facilities in adjust- 
ing the balance of earthworks ; that is, of widening embankments for the 
disposal of excess of cutting, or vice versa : and also where it is advisable 
to resort to side cutting in the formation of embankments in preference 
to extra cutting from the excavations, all allowance being made for the 
long haulage of empty waggons over steep gradients, which are now the 
rule instead of the exception. 

Every engineer knows the importance of cross sections in order to 
arrive at practically and satisfactorily accurate results in determining 
the quantities in heavy earthworks ; he knows also that to obtain these 
results great care is required in plotting the cross sections of cuttings 
and embankments. Though the operation is exceedingly simple, he is 
equally well aware of the amount of time occupied in calculating the 
areas, and in checking the work. The Earthwork Tables here given will 
materially assist in reducing the time and care required in these opera- 
tions to a minimum. In the annexed figure, is a cutting in sidelying 
ground 35 feet deep at centre stump, but at a the depth scales only 
30-75 ; set off b a equal to 30*50, and the tables at once give the quantity 
in cubic yards due to the area ai/cd, leaving merely the area of the 
triangle a d e to calculate. If the area ab'cd is calculated from the 
esoss section, the quantities from the tables will prove if a b', b c, and 
c d have been correctly plotted, and the area accurately calculated ; the 
work will be safe from all chance of error. 

H 



.168 



CONTRACT EARTHWORK TABLES 



In heavy earthworks, we are all aware that in preparing the quantities 
for the monthly certificates, the work of squaring up from measurements 
taken on the ground always occupies considerable time. Table I. of 




Earthworks will be found to save much time in making these calculations, 
or in checking them, as the annexed figures will show. In fio\ A, let a 
be 12 feet wide and 15 feet high, then, by Table VI., we have 666-7 
cubic yards due to this area; let b be 30 feet mean width, and 10 feet 



Fig. A. 




mean height ; twice 15 = 30 ; on the 10 feet in column 30 we have 555'6 
cubic yards, and this, multiplied by 2, gives 11112 cubic yards for the 
portion b ; let the portion c be 65 feet mean width, and 9 feet mean 
height ; we may take twice 24 plus 17 = 67 by 8, and we shall have 

71M 

711-1 

503-7 

1925-9 

And for the whole area of A we shall have 
Cubic yards. 
a= 666-7 
6 = 1111-2 
c = 1925-9 
3703-8 = A. 



AND MEASURING UP. 



169 



At the next point of measurement determined on, let the cross section 
be as in fig B. Let a be 12 feet wide and 161 feet high ; for this first 
portion we get from Table VI., opposite 165, 733-0 cubic yards ; for b let 
the mean width agreed to be 50 feet, and depth 20 ; then 24 plus 26 being 
equal to 50, we take out from opposite 20 feet deep 17778 cubic yards, 

Fig. B. 




and 1925*9 cubic yards = 3703 4 7 cubic yards ; for portion c let the mean 
width and mean height be 98 feet and 10 feet ; then for width we shall 
hare four times 20 and 18 = 98, which will give from the tables 2962-8 
and 666-7, equal to 3629-5 cubic yards. For the whole due to area B, 
we shall have 

a= 733-3 

6 = 3703-7 

c = 3629-5 

8066-5 cubic yards = B. 

The mean of 3703-8 and 8066*5 is equal to 5885 cubic yards, being 
the quantity upon a length of 100 feet. But let us suppose that it is 190 
feet instead of 100 ; then we take the 90 as a decimal, and we shall have 

5885 
1-9 

5296-5 
5885 

11181-5 cubic yards. 

We will conclude by an apology to engineers for the details above 
given ; but they will be so good as to remember that these pages will 
come into the hands of students, and even of working men, and that, 
necessarily, explanations must be full and simple. 



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183 



TABLE VIII. 

GRADIENTS. 

After laying down the gradients on a working section, we have to 
calculate the rise or fall chain by chain ; on a line of only 10 miles in 
length this involves about 800 calculations, each of four or five figures, 
and as accuracy is imperative in this matter, the whole of the work has 
to be carefully checked. All those who have had to go through this 
operation, know the amount of labour it involves. It will be seen by a 
glance at Table VIII. that the work is there done ready to hand, and 
that by the use of it, the operation of checking the figures will be quite 
unnecessary. Every professional man knows also, that although the 
matter of calculating gradients for parliamentary sections is very simple, 
very serious mistakes often occur; probably from so much of this work 
being often done late in the night, when men are more than tired. The 
writer will just mention one case, which occurred not very long since. On 
an important line of about 20 miles in length, a clerical error of this 
description was carried through the section, and the consequence was 
that no further step was taken than to deposit the plans, for it was only 
afterwards, unfortunately, that the error was discovered. Not only 
about 2,000 in cash was lost in this matter, but the line of railway 
also. By a very simple use of this Table, and the application of a 
horizontal and a vertical scale, even the possibility of error is entirely 
avoided. 



E 

1 

N 

S 











O t~- l-l Tf- M lO 

O M VD COOO rj- 
O VO ^ tJ- t}- to 
p OO OO ON rj- 
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NO to to ^ -3- 


n On O d CO to 
t^ O n CO CO t-. 

to to to On co r}- 
00 co On >o co 11 
d O is vow in 

T 1 - tJ- CO CO CO CO 


d- N O On 00 
4 tsO vo S On 
to >. O N w O 
O On p p t* ?t- 
OvNO to co w On 
C N S CJ s >-< 


1 N 1 to 
N n tovo n M 
r}- NO0 N M t4- 
NO On S VD w co 
K io rj- c" ii ON 


43 

O 
O 
O 
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BRERS'? 

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O M3 CO d M O 
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tsinmM b 00 

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00 00 00 00 00 00 


43 







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43 

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co O r^ vooo 
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O + N tJ- vo t$- 
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d 00 r* C\ 
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CO ON O vo d 
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