AMERICAN HAND-BOOK OF CHEMICAL & PHYSICAL APPARATUS, MINERALS, FOSSILS, RARE CHEMICALS, ETC

ou
NLA

AMERICAN .

FAN D-BOOK

OF

hemical & Uhosical Soparatus,
Or PP |

MINERALS, FOSSILS, RARE CHEMICALS, ete.,

FOR THE USE OF

Schools, Colleges, Factories,

HOSPITALS, LABORATORIES, ASSAYERS, DENTISTS, PERFUMERS,
CHEMISTS, DRUGGISTS, PHYSICIANS, &c., &c.

IMPORTED OR MANUFACTURED BY

No. 6 Barclay & 12 Vesey Streets,

One aAocor West of the Astor ELouse,

NEW YORK.

SOLE AGENT FOR

Ward's Plaster Casts, Trommsdorff's Pure Chemicals, &ec., &e.

L372:

5 j
‘ ' pee

PREFACE.

In response to the oft repeated and urgently pronounced requests
of my large and generous constituency, I have much pleasure in *
presenting my first Catalogue to the kind perusal of themselves and
the public.

From the nature of the work it will, | am sure, without any
further proof, be admitted that a large outlay of money, and an
immense expenditure of time, have been demanded. Very many of
the illustrations now appear for the first time in this country,and most
of the representations have been drawn from the objects themselves.
The work has, consequently, been delayed far longer than was
intended, and now, although the utmost care has been taken, I
should not like it to be received as perfect. Doubtless some maccu-
racies have crept in unawares, but these, I trust, will be found
slight, and unimportant in character, and will, in consideration of
the amount of work inyolved in the compilation, be gently criticized.

The classification of the articles will be, as far as ‘possible,
alphabetical; and, for the further convenience of those using the
Catalogue, an Index is added. In this the articles are, without any
regard to their uses, arranged alphabetically, with a number an-
nexed, which refers to the page upon which a description of the
article may be found.

It is well known that in apparatus which is imported, unimpor-
tant variations in form are always liable to be found. In this respect,
it will always be my endeavor to secure the style which shall contain
the latest improvements, and be the most effective in operation.
My bottles are all made on my own forms, and I can confidently
give a guarantee that every article named in the following pages
will be in every way as represented.

In conclusion, I beg to thank those who have so generously sup-
ported me in the past, and to express a hope that this work will be
found useful in our laboratories and factories, and indeed in the
hands of any person who may refer to it.

EB. BB

10 Barcray Sr., N. Y.
cer ne me ; ? WARSHAW
uly, : COLLECTION

be ae

ERRATA.

During the printing of this book the Piewine prominant
errors were discovered :

Om page 6, No. 1252, for $3.50 read $5.50.
“+21, “ 1431, in nests of 1-12, per nest, $4.50.
% 23, “ 14653, pints, 90c.
: 1476, price $35.00.
1482, “ 15.
1483, ‘* . 30.
“ 27, ** 1601, for 22 oz. read 32 oz.
™ 28, 1515, strike out 3 and 6 oz, sizes. -
1515 a, Boh. top stopper, prices 20 per cent. iess than i515.
a“ 30, “ 1528, 2 glls., $2.25.
Pages 35 to 38, 20 per cent. reduction on those made here.
On page 40, No. 1670, for $1.00 read $1.50.

Ma 49, 17 80, should read $40.00.
M 52, “ 1801, for .75 read $1.75.
a 75. * 1806, * drip read dip.
* 52, ‘“ 1810, should read unmounted instead of mounted.
” 53, ‘* 1815, for frictional read fractional.
» 56, ‘* 1869, prices are per dozen instead of single.
* 59, “ 1890, should read perf. cover for gas reduction tube.
- 63, “ 1948, 50 cc, for $1.40 read $1.50.
ee 00 BS. 2.25.
eer: oe. BAB 2.50.
eee tae Oe ee 3.00.
# 63, ‘‘ 1952, for gramme read cc., and for the prices $1.00, $1.16,
and $1.25 each. ‘
“« 65, “ 1975, is of the new form having a glass shelf to support
the triangle.
“ 69, “ 2024, 14 gall., $10.00.
“ “ 9025,1 “ for $14.00 read $16.00.
- be i ae Pee, ee ee 20.00. :
“ 42, “ 2024, the price is $20.00.
- 75, “ 2079, for $9.00 read $6.00.
” 77, ‘* 2120, ‘“ Tangent read Coulomb Torsin
a4 79, “ 2142, “ $6.00 read $5.00.
“ 83, ‘“ 2177, should read $5.50 to $9.00.
* 91, “ 2253 a, Filter Patterns, per set, 60c.
“ 93, .* 2276, ; oz. single piece. 10c.
12¢.
“ : “ 4“ ‘sé 15e,
“ 6 “eb “ “a 20c.
“a 8 “ « és 25e.
“. 12 “ iT ‘“ 27c.
‘“ 16 “ “ tt 30¢.
r s“ 24 “ic “ “ 35c.
“ 32 sé “cc “cc 60c.

“ 93, “ 2290, 4% & & 956.
se 8 “a éc 6“ 30c.

“b 16 “ oe “ 40c.

es 32 “i “ “e 60c.
- 94, ‘ 2301, instead of German silver point read file on handle.
* 96,“ 2323, * 1 oz. read 8 0z

“ce

oe 18 “cc “cc 16 6“
“ 2353, read $1.25 for T5c.

No.

2365 a, Fletcher’s gas furnace, 50 burners. for smelting iron
and ether metals, $30.00.

2375, read $45.00.

2382, strike out 14 gall. size.

2397, for $7.50 read $9.50.

2458, “* $35.00 read $30.00.

2557, ‘* actual measure read actual measures

2586, “ $1.50 read $2.50.

2604, “ 3.00 ‘ with swivel, $4.50.

2635, “* guaged read gauged.

Illustration No. 6241 read 2641.

2644, strike out words and wire.

2645, e ditto under and wire, and for $3.25 read
$3.75.

2647, for 10 in., $2.50 read $2.00.

2648, ‘* $4.00 read $5.00.

2675, the price is $2.00.

2693, for $2.50 read $3.00.

2838, “ $1.50 to $2.50 read $2.50 to $5.50.

2890, for .75 read $1.75.

2953, read $1.75.

2954, “ 2.50.
2965; 4,00.
2993, for $1.50 read $2.00.
29945°°¢ 1.50). 4 2.00.

3001, prices are per dozen and not per single piece.
3002,

3040, 1 pint, $3.50.

3057, for $9.00 per lb. read $5.00.

3147 a, Spoons, Blowpipe, of ivory, each 40c.

” 160, prices of stop-cocks reduce 20 per cent.

On page 102,

eg 108,
“ 104,
- 106,
OS,
“ 119,
“ 121,
* 123,
S 125,
e126,
#194,
be
eT,
“
“ 128,
“129,
“136,
“ 139,
“ 145,
ob

4 ity
“148,
6
o 149,
“ 152,
«153,
“159,
” 165,
* 169,
“169,
< 170,
6
6) A
afte pes fF
Sr
ee tye
© 5583,
“ 207,
oe
+6307,
. 211,
“ 911,
“914,
“ 215,
* 215,
¢ 241,
_ 250,

No.

3227, for $1.50 read 75c.
3304,“ 4.00 “ $3.50.
3306, 4.00 “ 10.50.
3318 a, Tips Blowpipe, brass, each 10c.
b, 3 solid platinum, each 75c.
3343, for $1.00 read $100.00.
3344, * 50c. read 40c.
3401, the price is $2.00.
3408, 6 in., $5.50 per dozen.

Chemicals, see new price list.

No.

3477, for $7.00 read $10.00.

3478, “ 12.00 “ 15.00.

3479, 3.00 “ with swivel, $4.50

3485, a series of nine minerals and strike o::t No. 10. —_

Diamond.
3488, for $6.00 read $10.00.
3504, “ 10.00 “ 12.00.
$606, *: 10;005. 8): 36.00.
3506, “ 15.00 ‘ 20.00.
3593,.:*. 4.002% 6.00.
6667," 24. 7.50.

~ 253, Chemicals, list of, for 101 read 181.

“959,

sé

Lippincott’s paper index, for 77 read 177.

N B.—Prices R. B. Crucibles and Evaps. have advanced; Americar: made
goods have declined.

E. B. BENJAMIN,
10 Barclay Street, N. Y.

; SS: : t “International Exhibition,

| ss PHILADELPHIA, 1876. 3
ae Be BANS
2 reel, New York
LO barelay Street, New loré&
“ Gxeellence of Design and Sinish in Ghemical Apparatus |
: cand Yutity and Xatity of Chemicals.

NOTICE.

THE “ Albertype” of a portion of my lower show-room, exhib-
ited in the front of this Catalogue, was prepared by Mr. E. Bier-
stadt, of this city, expressly for this work.

The prices placed against the several articles in the following
Catalogue are for United States legal tender, and are arranged upon
so low a scale that net cash payments will be required for single
pieces, except when otherwise agreed. ‘These prices are, of ,course,
subject to alterations, according to the values of crude materials
and labor, and to the fluctuations in the foreign markets. For ex-
ample, I am already advised of a prospective advance on Becker’s
balances and weights at the beginning of 1873, amounting to about
10 per cent. on his prices in this catalogue.

The charges of packing and shipping must, of course, bé borne
by the purchaser; and, in the case of chemicals, unless otherwise
directed, these will be put into bottles and suitable packages, the ex-
pense of which will be added to the cost of the materials themselves.

Damages occurring by breakage or otherwise, in transitu, are
never entertained in this business, nor can claims for deductions of
any kind be allowed, unless notice of the same be given w_thin six days
of the receipt of the goods. In every case the signed receipt for ar-
ticles in good order will relieve the supplier from all responsibility.

In ordering goods, it is desirable that full shipping directions
be given, as otherwise the selection of route will be considered as
left to my own discretion. The fullest description of goods is also
solicited, particularly when (as may be done) reference is made to
any well known foreign catalogue.

Having engaged the -ervices of an experienced glass-blower,
numerous styles of small apparatus, not specified in this Catalogue,
can be well and expeditiously manufactured. When such are re-
quired, it is necessary that the directions contain carefully prepared
drawings and accurate dimensions.

All kinds of apparatus can be carefully and accurately repaired
on the premises by experienced workmen.

Valuable apparatus, imported specially to order, for moderate
_ terms, on commission. When such are imported for scientific insti-
tutions, they are free of duty. ;

The large outlay of money incident to the publication of this
work compels me to make a charge of $1.50 for each copy. This
will partially cover expenses, and will, I am sure, be cheerfully paid
by any who desire to consult the work. E. B. B.

[Entered according to Act of Congress, in the year 1872,
By E. B. BENJAMIN,

In the offite of the Librarian to Congress, at Washington, D. C.

4
Ih

Dana

.

"CAT AWOGUE.

For numbers 1 to 1,248 reference should be made to the Cata-
logue of Dr. H. A. Warp’s Casts of Fossils. This collection con-
tains accurately formed models, and embraces all that has been
discovered in reference to the Animal Kingdom, in its various sub-
divisions of Vertebrates, Articulates, Mollusks, Radiates, and Pro-
tozoans. Full descriptions will be found in the Catalogue, which,
as a work of reference, should be in everybody’s library.

Dr. Ward having paid me the compliment of making this estab-
lishment a special, and indeed, independent of his factory, the only
depot where his casts can be obtained at the manufacturer’s prices,
orders are earnestly solicited for these valuable additions to cabinets
and college col'2ctions. ‘The specimens are well arranged and classi-
fied for inspection, and can be supplied singly or in series.

Special attention is called to these casts, and a cordial invitation
is extended to all who may feel a desire to inspect them. The
extraordinary energy and ability displayed by Dr. Warp, in secur-
ing and collecting, from the most reliable sources, these remarkable
specimens of past ages, is undoubtedly entitled to the warmest
encouragement and earnest support on the part of his fellow
countrymen. His depdts, established in London, and on the con-
tinent of Europe, are already giving him important evidence of the
appreciation in which the people of those countries hold his success-
ful endeavors for the advancement of science, and it is earnestly
hoped, and indeed confidently believed, that as soon as it shall be
generally known that a depot has been established here, the people
of the United States will also extend to the Doctor substantial
tokens of their approbation.

Professor OWEN, in his popular work on a National Museum of
Natural History, says: “ A fossil bone, and a colored plaster cast of’
it, are not distinguishable at first sight—scarcely by sight at all.
The artificial junction of a series of casts of the bones of an unique

6 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

fossil skeleton, produces a result equivalent, for all the purposes of
public exhibition, to the articulated skeleton itself. ‘Thus, every.
capital in Europe, the public museum of each civilized community,
may show to the people the proportion of the creatures of former
worlds, that science has so restored.”

PRICES IN CURRENCY.

12484.—Absorptiometer, Bunsen’s, for mea-
suring the absorption power of gases.
$50.00
1249.—Acetometer, Otto’s, of glass on wood
foot, for indicating the per centage of an-
hydrous acid in vinegar, acetic acid, &c.;
graduated 0 to 12 in fourths. $1.50
1250.—Acetometer, accompanied with hy-
drometer for liquids lighter than water,
thermometer, and two ground stoppered

12484

1252

bottles, one containing test solution, the other solution of lit-
mus, complete in leather case. $4.00
-1251.—Acidimeter, according to Fresenius, for testing nitric
acid. - 60
1252.—Acid Anhydrous Phosphoric. Apparatus for burning
phosphorus in oxygen. $3.50

. OF CHEMICAL AND PHYSICAL APPARATUS. 7

1253.—Acid Bottle, French, having an extra tight ground stop- |
per, extending to the bottom of the bottle, especially used for
testing coins, minerals, &c.

$ i 2 OZ.
2d 00 oo each.

1254.—Acid or Cobalt Bottles, of Bohemian
glass, having long stoppers, covered with
ground caps.

4 1 2 SOR,

‘50 63 WO .90 each. 1254
1255.—Acid Brushes, of fine spun glass. Each, .50
1256.—Acid Carbonic, liquified under low temperature, in

sealed glass tubes, enclosed in velvet-lined leather case. 57.50
1257.—Acid Carbonic, apparatus,

Dr. Scheibler’s, for determining , a

the quantity of carbonic acid in |

bone ash. $35.00

1258.—Acid Carbonic, apparatus ;

the same as above, American.
$25.00

1259.—Acid Carbonic. Dr. Scheib-
bler’s new apparatus for quantita-
tive volumetric analysis of car-
bonic acid,

i

$45.00
1260.—Acid Carbonic, generator, »
with lead tripod.

11 inches high, . . $9.00

14 . 12.00
_1261.—Acid (arbonit: generator,
French make, very strong and
heavy, with extra tubes, cocks,

: &e. ~ $25.00

_

é 1262 1967) 14,
a 1262 .—Acid Dishes, of Meissen porcelain, for freezing in vacuo,
&c., with three partitions, five inches. Hach, $1.25

8 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE,

1263.—Acid Dishes, of Berlin porcelain, with six partitions.
44 54 64 in.
$1.15 1.30 1.50 each.

Cy ri 2B

nf
wo
tit i 0

1263 1260 1264

fy

1264.—Acid Dishes, of glass, plain, on three feet.
: 3 34 32 in.
0 60 “75 each.

1265.—Acid Hydrochloric apparatus, Hoffman’s, for decom-
position of Hydrochloric acid into hydrogen and chlorine,

mounted on stand. $6.00
1266.—Acid Hydrochloric. The same apparatus as above, but
unmounted. $2.50

1267.—Acid Hydrochloric apparatus, Hoffman’s, unmounted,
for showing that the gas evolyed from this acid contains equal
volumes of chlorine and hydrogen. + $3.00

1268.—Acid Jars, for preparing test solutions in volu- ¥
metric analysis, 1000 grains. $2.25

1269.—Acid Jars, accurately graduated, with double
numbers, which can be read up or down.

100 200 300 400 500 1,000 ) ea
in, 1 2 2 5 5 Ih oS:
$2.00 2.50 3.00 3.0 3.75 | 4.00each. 1269
1270.—Acid Jars, on brass foot, registering 0 to 12. Hach, .75
1271.—Acid Measures, of porcelain, with lip.
2 4 8 16 32 OZ.
30 50 90 1.50 1.80 each.

OF CHEMICAL AND PHYSICAL APPARATUS. 9

_ 1272.—Acid Measures, of gutta-percha, conical, capacity 1 litre.
| | Each, $2.00

1273.—Acid Measures, cylindrical glass.
1 litre, 2 litres,
$3.00 3.50 each.

1274.—Acid Sulphuric, apparatus for making. $3.00
1275.—Acid Phosphorus, apparatus for making. $2.50
1276.—Acid Pipettes, with rubber ball. RD
1277.—Acid Syphon, of glass, with suction tube.

9 12 18 24 in.

OO 40 60 .75 each.

1278.— Acid Syphon, — with
Mohr’s spring clamp, glass
tip, and gutta-percha connec-
tion. Each size add .50
1279.—Acid Syphon, of glass,
with suction tube and glass
_ stop-cock, instead ot Mohr’s
Bee A spring clamp, 18 in.
| $1.50
---1280.—Acid Syphon, of glass,

1277 1281 1282

with delivery tube united by
| rubber. | $1.50
_ 1281.—Adapters, French, bent, with ring around the larger end.
1 2 4 8 oz.

08 AY a) Nive ya 25 each.

‘

-_

10 E. B. BENJAMIN'S DESCRIPTIVE CATALOGUE

1282.—Adapters, French, straight, with ring: around the larger

end, 16 oz. capacity. Each, .50

1283 —Adapters, of Bohemian glass, bent for connecting retorts _
with receivers, width at larger end. |

14 24 24 3 in.

30 Oo 0 “70 each.
1284.— Adapters, straight, of Bohemian glass,
: 14 Sa oe 3. in,
20 30 Ad .65 each.

1285.—Adapters, of Bohemian glass, 5 feet long. Each, $2.50
1286.—Adapters, of vulcanized rubber, 10 inches long. Each, .50
1287.—Agate Slabs, with mullers, highly polished, for grinding

into fine powder materials and minerals a careful

investigation.

54 53 d+ 616 64 in. sq.
$12.00 15.00 19.00 22.00 25.00 each. |
1288.—Air Cylinders, apparatus for $12.00

1289.—Air G.obes for weighing Gases.
1 2 3 gall.
$1.25 2.00 3.00 each.
1290.—Air Thermometer Tubes, bulb 2 in. dia. Each, .25
1291.— “ ae & «<3 inches. Fs OO

1292.—Alcoholometry. Dr. Pyle’s Book, containing tables with

calculations for estimating true alcoholic per centages according

to McCulloch. 1

1293.—Alcoholometers, U. 8S. Standard, in chamois-lined

‘eather cases, with thermometer scale on hydrometer, and extra

thermometer, comprising (with the book above referred to) the

complete apparatus for dealers in proof spirits, &c., according

to U.S. C. standard for exact estimates. Each, $7.00
1294.—Alcoholometers, Tralles & Richter’s, in leather cases.

Each, $3.50

1295.— re eS sf in chamois-lined
leather cases, with jar and thermometer. Each, $6.00
1296.—Alcoholometers, Tralles’s, with jar and thermometer, in
chamois-lined leather cases. Each, $5.00

1297.—Alcoholometers, U. S. Standard, with thermometer
attached, and most accurate proof scales in paste-board cases.
Each, $3.00

OF CHEMICAL AND PHYSICAL APPARATUS. 1t

-1298.—Alcoholometers, U. 8. Standard, Tralles & Richter’s

scale, with thermometer, as above. Each, $2.20
1299, without thermometer, in round, paste-
ooard cases. Each, $1.06
1240.—Alcoholometers, Gay Lussac’s centesimal scale, in paste-
board cases. Each, $1.50

1301.—Alcoholometers, Gay Lussac and Cartier’s, in tin boxes.
Each, $1.00

-1302.— G graduated 15 to 95, No. 204. Each, .50
~ 1303.— i Cartier’s, French, in round cases. Each, .75
1304.— a French, in pasteboard boxes, graduated 0
to 40; very delicate and correct instruments. Each, $1.25
1305.—Alcoholometers, French, in tin boxes, graduated 10 to 40
Each, .50
1306.— a in tin cases, smaller size (No. 1,093).
Each, .

1307.—Alcoholometer Jars, with glass feet, according to size.
Each, .50 to .75
1308.— = “« with brass feet. Each, .90
1309.—Alembies, glass, Bohemian, with loose head and tightly
ground joints.

8 Oz. Pints. Quarts.
$1.30 1.80 2.50 each.

f£

: ATT

1309 1313 |

1310.—Alembies, glass, German, with fast heads, tubulated,
quarts. Each, $1.50
1311.— ef porcelain, with loose heads, 12 oz. “© $1.50

wg? E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

1312.—Alembies, Salleron’s, for testing wines and saccharine alco-

holic liquors, with heating apparatus. 3 Each, 15.00
1313.—Alembie, Salleron’s, for testing the quantity of alcohol
in wine and spirits. Large size. $25.00

1314.— Alembic Stoneware, for sublimations, &c., all sizes, from
$3.00 to $7.50 —

1315 1316 1317

1315.— Apparatus, for the determination of carbonic acid in

carbonates, Wetherell’s form. Each, $1.25
13i16.— as Fresenius & Wills’s form (No. 450) Ea. .65
1317. ae Berzelius’s Bt fae OR RE ory

1318.— s Rose’s 6 AGO Nes EOE

NU g
1322 1324 1325
Mohr’s form (No.503) Ea. $1.25
Fresenius’s 60. CEES Pyrg Serer aD
Schrodtter’s « (© 456) © 2.00
Geissler’s > CE EDD)
1323.— se Fresenius’s new form ( “ 452) “ 1.50
1324.— ‘ Schaffner’s ‘ ( 64 5B) ae
1325.— ss Kipp’s : (46 ORY eRe ED
1326.— a Kipp’s “ Cables Ere
1327.— “ “ « (#464) © 1,65

1328.— “4 Mohr’s ae (467) So TD

‘OF CHEMICAL AND PHYSICAL APPARATUS. 13

1329.— Apparatus, Erdmann’s new form (No. 465) Ea. $1.50

1329a.— ss Bunsen’s “ eT va

} i
ey |
1333 1334 1335

1330.—Alkalimeter ,Descroizillé’s, of glass, mounted on wood foot

graduated from 0 to 100, in ones. $2.00
1331.—Alkalimeter, Mohr’s, with glass foot, graduated, 0 to 100.
, | $1.75
1332.—Alkalimeter, Uvre’s, with glass foot and stop-cock, and
channel stopper for pouring liquids. $2.00
1333.—Alkalimeter, Leslie’s, with glass foot, cork-stopper, and
two pipette tubes. $1.50
1334.— Ditto, Descroizillé’s, on glass foot, graduated 0 to 100.
| 81.50
1335.— ¢ Gay Lussac, with wood foot.
20 CC. 50 G. ¢. . 100 ce.
5 2 5
$1.75 2.25 2.50.each.

Alkalimeters not mounted on stand. See Burettes.
1336.—Ammonia. Hoffman’s apparatus for decomposing am-
- -monia. $6.00
1537.—Ammonia. Apparatus for ascertaining the exact propor-

tions of hydrogen and nitrogen in ammonia. Unmounted, $3.00 —
1338.—Ammonia carboys, for concentration of the stronger acids
and ammonia, 2 necks, with delivery tube, German, glazed out-
side, of 200 litre capacity. $50.00
1339.—Ammonia carboys; two of the above, including connec-
tion. $100.00

14 E, B. BENJAMIN'S DESCRIPTIVE- CATALOGUE

1339 1351

1340.—Ammonia Chloride, apparatus for illustrating the for-
mation of Chloride of Ammonia, by condensing the vapors of
hydrochloric acid and ammonia. ‘This consists of a gallon glass
flask, to which are attached two tubes by means of an India-

rubber connection. $2.50
1341.—Annealing Cups, of porcelain. 25
1342.—Ditto, of porous clay. Per doz., $2.50
1343.—Analysis, apparatus for organic analysis, according to Lie-
big, complete. $45.00
1344.—Anvils for Blowpipes, small, with square ends. Each, .75
1345.—Ditto, large. « $1.0)
1346.—Ditto, round, with dieu ete., complete. “ 10.00
1347.—Aphlogistic or Flameless Lamp, with platinum sponge
and glass wick-holders. Hach, .75
1348.—Aphlogistic Lamp Sponges, with glass wick-holders.
Each, .40
1349.—Arsenic, Marsh’s apparatus for the detection of, unmounted.
Each, .50
1350.—Ditto, mounted. | $4.25
1351.—Ditto, brass stopcocks for the above. Each, $1.25
1352.—Ditto, Fresenius’s apparatus for the detection of. 5.00
1358,.—Ditto, Mitscherlich’s ditto. 3.00

1354.—Arsenic Plates, plain.

No. 000 00 0 1 2
psn i. 15 .25 80 .40 each.

OF CHEMICAL AND PHYSICAL APPARATUS. 15

Hosa “| |
fe \ |
; 1357
1355.—Arsenie Piates, Meissen, with Lips.
Small, medium, large.
3d 40 50 each,
1356.—Arsenic Tubes, five different forms. — Per doz., .50 to .75
1357.—Ditto, three kinds for sublimation. Per doz., .75

1358.—Aspiration Apparatus, consisting of three bottles,
mounted, in box, with suction and delivery tubes for inhaling

the vapor of medicinal solutions. $2.00
1359.—Ditto, ordinary. 1.50
1360.—Aspirators, of glass, with brass stopcocks. Quarts, ea. 2.00
1361 .—Ditto, ditto, 4+ Galls. “ 2.50
1362 .—Ditto, ditto, Galls. “ 3.00
1363.—Ditto, Liebig’s. Each $1.50 to 2.50
1364.—Ditto, of glass, with glass stopcocks.

Litres + 1 2 4 8

$3.50 3.79 = 4.78 6.25 9.90 ea.

1365.—Aspirator Tubes. Each, .50
Assay Apparatus, for the various articles
used in assaying, such as basins, bellows, blow-
pipes, crucibles, covers, cupels, dippers, roasting
dishes, flasks, hammers, ingot moulds, muffles,
scoops, stopcocks, tongs, &c. See their respective ,
alphabetical positions.
1366.—Atomizers, of glass. Each, .25 \
1367.—Attachments, brass, for blowpipes. “ 0 Spe
1368.—Atropia Bottles. « 50 4368

{

16 E. B. BENJAMIN'S DESCRIPTIVE CATALOGUE

H. TROEMNER’S STANDARD BALANCES.

> 1369.—Assay Balances,

in French polished
glass case, beam rest-
ing on agate bearings.
Sensible to 51; mil-
ligramme. $55.00

1370.—Ditto, ditto. When

loaded up to 1 gramme
in each pan, needle de-
viates 10 divisions on
the scale for one milli-
gramme ; +4, partofa

ee milligramme is there-
fore to be seen. Steel knives with agate bearings. $75.00
1371.—Ditto, ditto, for up to 10 grammes in each pan. 75.00

1372.—Ditto, ditto, in French polished glass case. Is arranged

with rider apparatus and pan arrests.

Open beam, divided in

7y milligramme ; beam resting on agate planes. Needle shows

ten divisions for one milligramme.

1375

$80.00

1373. — Analytical
Balance, in French
polished mahogany
case, with counter-
poised sliding door.
Capacity 100 grm.,
sensible to zo55
grm. Steel bear-
ings, movable 33 in.
pans, 10 in. beam.

$40 00

1374. ditto,
has attachment for
rider, and pan ar-

rests. Beam graduated to one milligramme. $50.00

OF CHEMICAL AND PHYSICAL APPARATUS. 17

1375.—Ditto, ditto, in fine polished glass case, capacity 100 gram-
mes in each Li Beam divided in half parts of milligrammes.
_ Sensible to 34; milligramme, with apparatus for specific gravity.
~All bearings agate. 22 in. pans, 12 inch beam. $86.00
1376.—Ditto, ditto, all beawaes and planes agate. $96.00
1377.—Ditto, ditto, capacity 200 grammes in each pan, in fine
polished glass case, beam divided in 4; milligramme, sensible
to #1, milligramme. All agate bearings, with improved arrest
for pans, and pet for specific gravity, &c., &c. 3 in. pans.
Beam 14 in. $105.00
1378.—Ditto, ditto, all bearings and planes agate. 115.00
1379.—Coin Scale, for least current coin, in French polished glass
case, with counterpoised sliding doors, 74 inches beam, sen-

sible to =4,th grain. $24.00
1380.—Weights $20 piece to $1, adjusted to the least Current

Standard, in velvet lined box. $6 00
1381. —Specific Gravity Scale.—Constructed a\

after the plan of Dr. Mohr. $20.00

1382.—Chemical Seales, for general weigh-
ing, on polished box, with drop lever, es-
pecially constructed for laboratory use.
Including weights.

Diam. of Pan. Beam. Capacity. Price.

5 in. 9 in. 32 oz. $15.00
1383.—4 “ Lae! 1 12 00
1384,—3 “ eS B.S 10.00

Pans can be suspended by chains if desired.

1385.—Analytical Scales, for

weighing Ores, Minerals, Gold

and Silver Coin, Jewelry, Chem-

icals, &c., &e. On fine polish-

ed mahogany box, with drawer.

Lacquered beam, with box ends,

movable pans, ivory indicator.

Sensible to 3, grain. Price
does not include weights.

Length of Beam. _ Diam. of Pan. Capacity. Price.

| 14 in. 6 in. 25 02. $24.00
1386.—Do. 10 “ 4h‘ $e ts 18.00

1387.—Do. 8} “ ee BS 15.00
| Pans can be suspended by chains if desired.

18 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE i

1388.—Students Balance, in polished mahogany case, sliding
front counterpoised. Improved apparatus for raising beam.
Beam, 74 in.; pans, 24 in. diameter. Loading 50 grms. and
sensible to y!,th. $26.00

1389.—Prescription Scales, on polished mahogany box, with
marble top. Ebony mouldings. With weights.

Pans. Brass. Nickel Plated.

24 in. $12.00 $14.00
1390.—Do. 23 “ 14.00 16.00
1891.—Do. 3“ 16.00 19.00

1392.—Gold Seales. For Jewelers, Brokers, &c. Finely finished
scale, on polished mahogany box, with drawer. Very accu-
rately adjusted. Weights included. ,

Length of Beam. Diam. of Pans. Weights. ‘Price.

LS io. 6 in. 64 oz. $25.00

1393.-—Do. 9 “ De 32“ 15.00
1394.—Do. 8 “ 4°" 16:8 12.00
1395.—Do. 7 “ 3 ee 10.00

1396.—Jeweler’s Balance. Glass case, 35 inches high, 32 inches
wide. Very superior balance, of the finest finish. Has open
beam, 8 in. movable pans, capacity 200 oz. in each pan. Sen-
sible to } grain when loaded. Case of French polished mahog-
any, with counterposed sliding door. Price includes a set of
weights, 50 oz. to 1 grain (125 oz. in all), which are neatly
fitted in the drawer of case. $85.00
Same balance, with weights from 100 oz. down. 90.00

1397.—Bank Specie Balance. Balance on polished mahogany
_ platform, with glass level and levelling screws ; beam, 22 inch,
provided with extra pan and balance weight. Capacity, $500
silver or $5,000 gold at a draft; sensible to one grain when

loaded. Price does not include weights. $90.00
1398.—Do. Same balance, in a glass case of polished mahogany,
with counterpoised sliding door. $120.00
1399.—Balaneces for Druggists and Assayers, “ weighing in,” on
marble slab, carefully adjusted. Each, $15.00

1400.—Ditto, ditto, wooden foot and drawer for tools and weights.
Each, $10.00
1401.—Ditto, of horn, with beam.
Pans.—Size, 3, 34 4 in.
Price, $2.50 * 8.50 4.50 each.

OF CHEMICAL AND PHYSICAL APPARATUS. ; 19

1400 1401 1405 1411
1403.—Bailoons, of Collodion, extremely light and thin, for
ascension, with hydrogen gas.

Size, 10 12 in.
Price, 75 $1.00 each.

i1404.—Balloons, French Rubber. Kach, .75

1405.—Ditto, Goldbeater Skin, from $1.50 to $5.
(‘These balloons, when not in use, should be kept in
a close package, with a little camphor, to preserve
them from insects. They should never be wetted.)

Balloons, of Glass. See Air Globes.

1406.—Barometer, for use in schools, usual form,
from $3 to $15.

1407.—Barometer, Bunsen’s Syphon, graduated
on both branches in millimeters, filled. $12.00 .é

1408.—Barometers, Aneroid, accurately adjusted ; 1407
same as used in the University of Vienna. Each, $30.00
1409.— Ditto, with Storm Glass. The rising of the milky sub-
stance indicates approach of storm. Each, $3.00
1410.—Barometer Tubes, 3 feet in length, sealed at one end. .50
1411.—Ditto, with bulb, for use with mercury. Each, .75
1412,.—Ditto, including the mercury. “< $1.25
1413.—Barometer Bulb Tubes. feb

Basins and Dishes. See Crystallizing and Evaporating
Apparatus.
1414.—Basket of Lead, for holding pieces of zine in hydrogen
generators. Each, .50
Batteries. See Electrical Apparatus. Baths, Eye, see E,
1415.—Beakers, of the very best Bohemian glass, thoroughly an-
nealed, and of uniform thickness, for enduring extremes of

20 E. B. BENJAMIN'S DESCRIPTIVE

CATALOGUE

/_— temperature, of Berzelius’s usual form, in nests of 00 to 1, con-
taining 14 to 3 ounces.

1416.—Beakers, in nests of 4,—00 to 2, containing 4 to

1417.— Ditto,
1418.—Ditto,
1419.— Ditto,
1420.—Ditto,
1421.—Ditto,
1422.—Ditto,
1423 .—Ditto,
1424.—Ditto,

(The capacities are approximate only.)

ditto,
ditto,
ditto,
ditto,
ditto,
ditto,
ditto,
ditto,

3,—1 to
d,—0 to
5,—1-to
6,—0 to
7,—0. to
9,—0 to
10,—0 to
13,—0 to

PER NEsrv..
4078. .35 .

3, i 3° 0° Gos BO
4, es 1¢to 9“ 65
Be io 3 to Asie ae
5, rs 14 to 15“ 80
6, 2s 14 to 21 “ $1.10
8, af 14 to 48 “ 2.00
9, sf 14 to 70 “ 2.25
$e aes 13 to140“ 4.00

Per nest, .20

1425.— Ditto, ditto, (singly). The capacities below, and dimensions,
are approximate :

NOS. HEIGHT, WIDTH. CONTENTS. PRICE, EACH.
0 2 inch. 14 inch. 14 ounce 06
1 24 do. ‘14.=«do. Bis AO 09
2 Be. 13 do. 2° AO; 12
3 3% do. 2 do. 6 ~=do. 16
4 4. do. 24. do. 9. do, 20
5 43 do. 2% do. 152 dex 25
6 53 do. 3 do, AL Gs OO
7 63 do. 34 do. 50.> G0. 40
8 74 do. 33 do. 48 AG, 5
9 84+ do. 4 do. ROS 2A. 5

10 94 do. At do. Spec do. 65
11 10 do. 5 do. 110° do, V5
12 11; do: 54 do. 140 do. 90

1426.—Beakers, tall and narrow; French form, very thin, 8 in
anest. Nos. 1 to 8. Price per nest, ,

$3.50:

OF CHEMICAL

AND PHYSICAL APPARATUS. 21

NOS. HEIGHT, WIDTH. CONTENTS. PRICE, EACH.
1 2% inch. 14 inch. 14 ounce. 20
2 3 do. 2 do. a. a0, 30
3 4 do. 24 do. 4 do. 40
4 5° do, 2% do. 6 do. 50
5 64 do. 3. do. 16 + do. .60
6 8 do. 34 do. 24 ~do. 70
7 93 do. 4 do. 32. do. 80
8 10. do. 4} do. 4+ gal. 48 oz. $1.00

1427.—Beakers, best Bohemian Glass, Berzelius’s form, extra wide
nests, from Nos. 1 to 6, same size as Griffin’s lipped, full nests.

1428.—Ditto, very large, Nos. 10 to 13, nests of 4.

1429.

1430.— Ditto, singly.
1431.—Ditto, Griffin’s wide form, lipped.

Ditto, full nests of 15,—00 to 13.

Each, $1.75
. 3.50
‘. 7.00

Each, .15 to 2.00

NOS, DEPTH, WIDTH. . CAPACITIES. PRICE, EACH.
1 3 inch. 24 inch. 5 ounce. 15
2 34 do. 24 do. 8 do. 25
3 4 do. 3 do. 12. do. 30
4 4k do. 34. do. 20 do. 35
5 5 do. 33 do. 25 do. 40
6 53 do. 4+ do. 40 do. 55
ie 64 do. 42 do. do. .60
8 74 do. Bt Wak do. 70
9 84 do. 52 do. do. 80

10 94 do. 64. do. do. 90
11 92 do. 62 do. do. $1.00
12 10: do; CO do. 1.10

1432.—Beakers, ditto,

ditto,

nests of 3,—1 to 3. Hach, .60

1437 1438 1441 , 1442 1443

1433.—Beakers, Griffin’s wide form, lipped, nests, 4,—1 to 4, ea. .95
1434.—Ditto, 5,—1 to 5. Each, $1.35
1435.—Ditto, 6,—1 to 6. | $55 2.00
1436.— Ditto, glass, flat bottom, perpendicular sides, without rim,
shallow (from 2 to 24 inches deep), nests of 4, small. —

Each, .75
1437.—Ditto, nests of 9. “ $2.00
1438.—Ditto, tall conical, with lip, 8 ounce capacity. 20
1439.—Ditto, porcelain, egg shape, flaring mouth, useful in dissoly-

ing metals and acids. Each, .30
1440.—Beale’s Quick Filter, 09
1441.—Beehive, shelves. Small, 25¢.; large, 75.
1442.—Bell Glasses, flat knobbed.

6 inch. 8 inches diameter. .-
$1.25 1.75 each. :
1443.—Ditto, swelled, with knob.
ae 1 2 gal.
$1.50 2.00 3.00 each.
1444.—Ditto, open tops.
z 1 2 gal.
$1.75 2.90 3.50 each.
1445.—Ditto, French, knobbed, tall.
pints. quarts. (4 1 gal.
30 .60 $1.00 1.50 each.
1446.— Ditto, American, tall.
pints. quarts. 4 1 3 5 gal.
AO 5 $1.00 1.50 3.75 7.50 each.

1447.—Ditto, French, tall, with foot, made to be reversed, for use
with light and heavy gases or fluids, vase form.

$ 1 2 gal.
$1.50 1.75 2.75 each.
1448.—Ditto, American, with small foot.

4 1 14 2 gal.
$1.25 1.50 1.75 2.50 each

OF CHEMICAL AND PHYSICAL APPARATUS. 23

1444 1445 1449 1451 1452 1453 1456

1449.—Bell Glasses, tall, wide open top.

pints. quarts. 4 1 gal.

i tt pe V5 $1.00 1.50 each.
1450.— Ditto, with glass plate on top, extra. Each, .25
1451.—Ditto, open mouth, for caps. |

quarts. $ 1 gal.
Vd $1.00 1.50 each.
1452.—Ditto, with brass cap and stopcock.
quarts. $ 1 gal.
$2.25 Bes 3.25 each.
1453.—Ditto, accurately stoppered with fine ground emery.
quarts 4 ! 1 gal.
$1.00 1.50 1.75 each.
1454.—Ditto, 16 0z., with hole in stopper, large enough to introduce
a tube. . Wd
1455.—Ditto, for hydrogen lamps, 8 oz. cohen

1456.— Ditto, open mouth, with tubulature at bottom, for use with
Bunsen’s pump.

pints. quarts.
$1.75 $2.25. each.
1457.— Ditto, with heavy emery ground mirror glass plate for the
bottom.
pints. quarts.
$2.75 ! , 8.25 each.

1458.—Ditto, Bohemian, having the base stoppered with
large ground glass stopper, cut and _ polished on. the
bottom.

4 8 16 32 o7.
30 0 WD $1.00 each.
1459.— Ditto, open top, graduated in cubic centimetres.
500 1,000 2,000 2,900 cc.

$2.50 3.50 525 5.50 each.
i

24 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

1462 1463 1465 1464 1465 1473

1460.—Bell Glasses, with cap and brass cock fitted.

500 1,000 2,000 2,500 ce.

$4.00 5.00 6.75 7.25 each.
1461.—Ditto, fitted with glass globes, with brass cap, stopcocks,
etc., 1 gal. Hach, $6.00

Beli-Shaped Gasometers. See Gasometers.
1462.—Bellows, hand.

6 8 inch.
Vd $1.00 each.
1463.—Ditto, double action blast, for use with the foot.
single air receiver. double.
$4.00 6.00 each. »
1464.—Binding Screws, for connecting poles of Batteries, fancy
styles. Each, .50
1465.—Ditto, for connecting poles of batteries, plain. Cr ae
1466.—Binding Clamps, for Smee’s batteries. fost
1467.—Ditto, for Bunsen’s smaller battery. Per sett, .75.'
1468.—Ditto, for Bunsen’s larger battery. $1.25
1469.—Bladders, hogs’. Each, .10
1470.—Ditto, with brass neck. fF OD
1471.—Ditto, with stopcock and plain bubble pipe. * $2.50
1472.—Ditto, for exploding gases. | cc 1.00
1473.—Bladder Pieces. fe
Blast Lamps. See Burners.
1474.—Blast Attachment, for blowpipe, brass. ©. OMG

1475.—Blood, Circulating Apparatus, to illustrate the mode
of circulation of the blood through the veins.
Small, $4.00 Large, $10.00
1476.—Blowpipe Tables, best French make, with iron top, and
drawer for tools, having brass discharge pipe with two nozzles.
| Each, $40.00
1477.—Blowpipes, ox-hydric, small size. ¢< 5.00

OF CHEMICAL AND PHYSICAL APPARATUS. 25

1478.—Blowpipes, compound, mounted on stand. Each, $7.50
1479.—Blowpipe, ox-hydric, compound, on stand, with double

stopcock, $10.00
1480.— Ditto, ox-hydric, unmounted, very powerful. 15.00
1481.—Ditto, for oxhydric or calcium light, carefully finished, with
regulating screws. : 20.00

1481 41491
(1482.—Blow-pipe, of glass. 2d
1483.—Ditto, Black’s, conical, of japanned tin, with movable brass
nozzle. AO
1484.—Ditto, brass, jewelers’ form, 8 inch. Each, .25
1485.—Ditto, ditto, with brass bulb. ee 18

1486.— Ditto, brass, Berzelius’s form, short nozzle piece, and
_ soldered platinum tips, in paper cases. Kach, $2.00

26 E. B. ‘BENJAMIN’S DESCRIPTIVE CATALOGUE

1482 1483 1484 1485. 1486 1487 1488

1487.—Blow Pipes, brass, with barrel-shaped head, soldered plat- —
inum tip. Each, $2.50
1488.—Ditto, Plattner’s form, brass, extra fine, with two tips, and.
extra heavy soldered platinum ends, including mouth-piece
having combined effect of trumpet and cylinder. Each, $3.00
1489.—Ditto, ditto, German silver. + 3.50
1490.—Ditto, ditto, ditto, nickelized. & 4.00

(The last mentioned will not become easily oxidized. )

1491.—Ditto, brass, with blast attachment for gas, and regulating
screw with mark. Each, $3.00

CG 3 =
ade rates J

1 : ree ry
Miia CE )

cae

( We:
| <i, :
= oa

1492 1495 1496

1492.—Ditto, Plattner’s spinne, of brass, having five jets from one

reservoir, to be used in connection with Rose’s Lamp and Blow
Table, to produce a high heat for fusing minerals, ete.

Each $5.00

1493.—Ditto, Bunsen’s, blast, mounted on round iron foot, having

a rubber attachment, connecting with a horn-mouth piece. —
Each $5.00

OF CHEMICAL AND PHYSICAL APPARATUS. 27

=
1497 1498

1494.—Blow-pipe Brass, with ivory-mouth piece, mounted on
fine mahogany stand, having jet arranged with thumb-screw, so
that it may be turned in either vertical or horizontal direc-
tions. | ! Each $3.50
1495.—Ditto, ditto, with brass lamp. 625 ABO
1496.—Ditto, in fine mahogany case, containing one Berzelius
blow-pipe, with soldered platinum end, ten reagent cells with
caps, pair of forceps and box for platinum. Each $5.00
1497.—Blow-pipe, mounted on stand, with automatic bellows.
Each $12.00
Blow-pipe Apparatus. See Apparatus.
1498.—Bolt Heads, of Bohemian glass.
4 8 16 02.
Oo 40 50 each.
1499.—Bolt Heads, with long neck of ordinary glass.

Each, .60 to $1.00
Bone Ash. See Chemicals.

1500.—Bottles for Chameleon. Each $5.00
1501.—Bottles, for Gas, Bohemian and French.
“ 8 02., .35 16 02., .45. 22 o2., .65 each.

1502.—Ditto, French narrow-mouthed, or Packing bot-
tles, for corks, pressed, per doz.

4 4 4 1 2 4 6 OZ.
20 20 10) Oo AO 0 .65
1503.—Jitto, ditto, ditto, oval, 2 0z., per doz. .60

1504.—Ditto, best quality white imported blown glass, with ring
around the neck and wide mouths;
( 4 4. r 2 4. 6. Bab 32 OZ.
40°50 $4081.00: 3.25: 1.50 .-3.75.: 2.50 4.00 per doz.

1505.—Ditto, ditto, narrow mouthed, same as above.

!

28 E. B. BENJAMIN’S DESCRIPTIVE CATALOGU

1o}1 61512) 1518 1514 1515 1519 1521

1506.—Bottles, American pressed, furnished only on special ap
plication. Price much below the above.
1507.—Ditto, French colored glass, narrow mouth.
1 oz. .50 2 02., .60 4.02:,:.75 . 6 oz. $1.25 . 12 02., 1.75
1508.—Ditto, ditto, ditto, wide-mouthed, same prices.
1509.—Ditto, German, wide and vial mouth.

4 1 2 4 8 16 02.

AC) 45 10) 69 VO $1.50 per doz.
1510.—Ditto, French sample, tall and taper for corks, each .40 to .50
1511.—Ditto, sample, for syrups, on glass foot. Each .25
1512.—Ditto, sample, French, narrow shape and long, of white

glass. Per doz, $1.25

1513.—Ditto, salt-mouths, American, or wide-mouthed bottles for
storing salts, ground glass stoppers, with mushroom tops.
pints. quarts. $ 1 gal.
$2.70 4.00 5.25 12.00 per doz.
1514.-—-Ditto, German, ditto, ditto, ditto.

1 2 4 6 Bede 16 24 3202. 4$ gal.
$1.25 1.50 1.75 2.00 2.25 2.75 3.25 400 5.00 8. 06doz.
1515.—Ditto, ditto, Bohemian, with finely-cut and polished tops,

made of glass free of lead, and not easily affected by chemicals.
1 2 3 4 6 8 16 32 02.
$2.00 2.25. 2.50 2.85 3.50 4.00 5.50 7.00 per doz.
1516.—Ditto, salt-mouths, French, with hand made stoppers accu-
rately double-ground with the finest emery, so that reagents
nice in them, will not deteriorate.

Pear Be oD os Se BS BAR 16 deca
61545015 136 156no8 Senaee Bee 5.50 7.00 per doz.

1517.—Ditto, French, colored.

1 2 4 8 1 32 OZ.
$2,00 2.00 3.00 6.00 8.00 10.00 per doz.

OF CHEMICAL AND PHYSICAL APPARATUS. 29

1518.— Bottles, ditto, Bohemian black, cut and polished mushroom
tops, for storing chemicals which are required to be kept from
the light. Per doz. $6.50
1519.—Ditto, American tincture, or narrow-mouth, with ground —

glass stoppers and mushroom tops
4 8 16 3202. ggal. gal. 2 gal.
$2.00 225 263 3.00 525 8.00 2400 per doz.

1520.

ditto, square-pressed stoppers.

8 16 32 OZ.
$2.25 2.63 3.00 per doz.

1521.—Ditto, ditto, German flat top stoppers.
4 Le 3 4 6 85-12 16 2.38 50n
$1.00 1.25 1.50 1.75 2.00 2.25 2.75 3.50 3.80 4.50 per doz.
1522.—Ditto, ditto, Bohemian glass, entirely free from lead, flat
top stoppers, fine cut and polished tops.

1 2 4 8 16 32 OZ.
$2.00 2.25 2.75 4.00 5.50 7.00 per doz.

1523.—Ditto, Tincture, German, hand-made top stoppers, accu-
rately ground with fine emery, similar to No. 1524.
Se Re be: 6 See ho: Be
od 65 ..75 90 1.00 1.25 1.50 1.75 2.25 2.50 4.50 per doz.
1524.—Ditto, ditto, French, each stopper ac-
curately hand-made and double-ground with g®™
finest emery, so that no air can enter to in- [if |
jure the solutions stored in them; these bot- |
tles are made expressly for the laboratory, to
hold choice reagents.
BO Be oR EES 4 G8 12 16 320z
90 $1.00 1.10 1.15 1.25 1.75 2.25 2.50 3.00 3.25 5.00 per doz.
1525.— Ditto, Tincture, French vitrified labels for Acids, Ammonia,
Alcohol, etc., carefully stopped by hand, shape No. 1524.

y pint. pint. quart.
10 $1.00 1.25

Ditto, ditto, with engraved labels to order.
1526.—Ditto, ditto, French blue tinctures, or narrow nivath: with
glass stoppers.

1 oz. 2 3 + 8 16 qt.
$1.25 1.30 1.50 1.75 3.00 4.50 6.00 per doz..

1527.—Ditto, ditto, Bohemian, flat cut and polished tops.
4 02., $3.00 — 8 o2., $4.25 per doz.

$ gal.
2.50 each.

30 - -&. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

1528.—Bottles, tubulated at foot and narrow mouth for corks.
Qts., .75 + gal. $1.00 1 gal., 1.25 each.

1529.—Ditto, Tincture, accurately gronad top stopper, babalated 7
at foot for separations.
1 litre. 2 litres. 4 litres.
$1.00 1.50 2.00 each.
1530.—Ditto, separatory, with accurately ground top stoppers, and
stop-cocks carefully ground into the tubulature at foot, every
joint nicely polished with ground emery, so that neither air
nor fluids can escape when enclosed. Best French.
1 2 4 8 litres.
$3.50 3.75 4.75 6.25 9.50 each.
1531.—Ditto, separatory, consisting of separatory bottles and sepa-
ratory funnel, joined by a rubber stopper.
1 litre, $6.00 2 litres, 8.00 each.

1532.—Ditto, chlorine, of colored glass, carefully ground glass
stopper, with glass cap fitted by ground glass joint, 1 litre

oe

capacity. Each, $2.00
1533.—Ditto, for ether, white glass, with cap and ground stoppers
1 2 4 8 16 32 OZ. eee

20 Bo AQ 60 $1.00 1.30 each.

1534.—Ditto, Woulff’s small 2 neck, for weighing and fitting small
apparatus. Per doz., $6.00
1535.—Ditto, ditto, 3 necks. rasens 7.20

es

1534 1542
1536.—Bottles, 2 necks, with round straight neck for rubber tub-
ing, 12 oz. Each, $1.00
1537.—Ditto, ditto, with centre neck for cork, 12 oz e 1.25
1538.—Ditto, Woulff’s, Bohemian, 2 necks.

Be a, Ro 16 BR On ¢ egal.
40 .4d 00. + 65s .90 $1.30 each.
1539.—Ditto, ditto, with a tubulature, near bottom.
Quarts, $1.50 4 gal., 2.25 each.

1540.—Ditto, Woulff’s Bohemian, 3 necks:

2 4 8 16 32°0z.. 4+ 1 13 gal
45 45 .60 .75 $1.00 1.25 2.50 3.25 each.

1541.—Ditto, Woulff’s French, 2 necks carefully
sealed on with glass shoulders. These French
Woulff bottles are never known to leak about the

tubulature.

4 Fees, 2 4 litres.
56 =.75 ‘ $1.00 140 2.50 each

1542.—Bottles, Woulff’s French, 3 necks.
+ +f Be. a0" 4 litres.

‘65 85 1.15 1.75 3.00 each.
15438.—Ditto, Woulff’s French, 2 necks, with tubulature near foot.
1 litre, $1.75 2 litres, $2.50 4 litres, $4.00 each.
1544.—Ditto, ditto, 2 necks, stoneware, tubulature near bottom.

60 litres. Each, $60.00
1545.— Bottle Caps, of flexible vulcan-

ized caoutchouc. Price according to

diameter. $2.50 to 4.50 per doz. ~ ke &.
1546.—Bottle Imps, ordinary. Each,.25 © = 1645

1547.—Ditto, fine quality. Hach, .75
1548.—Ditto, with car and balloon. “ $1.00

1549.—Bottle Brushes. See Brushes.
1550.—Boxes of black japanned tin for blow-pipe use in holding
capsules, test tubes, ete. Each, .75

32 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

1551.—Boxes, turned ivory, for $ oz. bottles. | Per doz., .60

1552.—Ditto, including bottles. s~- $2.00

1553.—Ditto, boxwood, including bottles. * ne 1.50

1554.— Ditto, of pasteboard, including bottles. ns 1.25

1555.—Ditto, fine turned rosewood, ivory trimmed, for tapers or
bottles. Each, .25 .

1556.—Ditto, pasteboard, round English form, holding ss
2 grammes, useful for putting up ordinary reagents,
pills, or small articles of jewelry. Per doz., .25 1556
1557.— Ditto, ditto, ordinary form, round, in nests of 5, Per doz. .25
1558.—Ditto, pasteboard, English form, extra quality, cherry lining,

2 grammes. Per doz. boxes, .25
1559.— Ditto, ditto, 4 grammes. at 40
1560.— Ditto, ditto, 3 in a nest, 1’s to 3’s. ss 45
1561.—Ditto, ditto, 5 in a nest, 2’s to 6’s ae 48
1562.— Ditto, ditto, 6 in a nest, 1’s to 6’s. é 0
1563.—Ditto, for Lip Salve, plain. Per doz. boxes, $1.00
1564.— Ditto, with legend “ Lip Salve.” Ks 1.25 1563
1565.—Ditto, of best China porcelain, with wreath and legend,

“ Lip Salve.” Per doz., $3.50
1566.— Ditto, ditto, rose and gilt, tipped. | a 2.50
1567 ,— Ditto, ditto, turned boxwood, flat form. és 1.00
1568.—Ditto, ditto, turned rosewood, “ ~ 1.25

1569.—Ditto, small dove-tailed pine wood.
3x3x15 3x3 x20 12x12x30

OO A0 $1.00 each
1570.—Box Sieves, Griffin’s, 3 partitions, used in
connection with the blow-pipe. Each, $2.50

1571.—Bologna Flasks, of thick unannealed glass,
will bear a smart blow, but fracture when a hard '
angular body is dropped into them. Per doz., $1.50

1572.—Bombs, see Candle Bombs. 1574 1575
1573.—Brass Jets, see Jets.

1574.—Brushes, fine, for Feather Tubes. Each. .25
1575.—Ditto, for ordinary Test Tubes. 6.1
1576.—Ditto, ditto, large ditto, ditto. 6: tap

1577.—Ditto, ditto, extra large ditto, ditto, or Bottles. F931 AG
(The above test tube brushes are all made of galvanized iron
or copper, to prevent rust.)

Hote Pt ubayieny Miaike an. (Ss ae
TAT RPO Mee ee
. A ah A 3

ae CHEMICAL AND PHYSICAL APPARATUS. 33

1578. —Brushes, for bottles, patent tin paula. Each, .25 ¥
1579. —Ditto, ditto, wood handles, large size. “ $1.00
1580.—Ditto, Camel’s hair, for cleaning the button, in assay-

ing. | sanel 20
1581.—Ditto, bristles, ditto. | (20 ADO
1582.—Bubble Pipe, of clay, with connecting piece of ie for

blowing hydrogen bubbles. Each, . Ler
1583.—Ditto, ditto, of brass. “ sah be

1588 1589

1584.—Bulb Tubes, in which ignited oxide of copper may be

cooled ; hard glass; small sizes. Per doz., .60
1585.—Ditto, in which ignited oxide of copper may be cooled;
hard glass; large sizes. Hach, .10 to .25

1586. anes, of selected cork, from 2 in. to 2 in. Doz. .20 to .70
1587.—Burettes, Bink’s, English form, with wooden foot.

25 "25 50 50 100 c. ¢
t ; a + ro z
$1.50 1.75 1.75 2.25 2.25 each.
1588.—Ditto, Gay Lussae,
25 d0 50 100 100 c. ¢.
$ $ fer 2
$1.50 2.00 2.50 = 2.25 2.50 each.
1589.—Ditto, Geissler’s, with ground glass stopcock running the

whole length of tube and lateral tube for receiving fluids near
the top.

25 50 100 c.¢
2p 4
$2.50 A Os 4.00 each.

t

“1590 1591 1592 1593 1594 * 1597
1590.—Burettes, Mohr’s.
20 20 2d 20 30 40 a0) a0
ae

$ io 5 to to $ + t
SL25 1.50.2" 4.50 3 41b: 200 225°: 3.00; fae
50 60 100 100 100 200 c. ¢.
L Ze =

7: + a:
$2.50 2.50 250 275 275 2.00 each.
1591.—Ditto, ditto, with glass stopcock.
25 25 50 50 100 100 ¢. ¢.
$ io 5 fo 2 $
$2.25 2.50 3.00 3.25 3.00 4.00 each.
1592.—Ditto, for Chameleon process, with lateral tube, joined near
the bottom.

25 A se
i 4
10° 107
$1.75 2.25 each.

1593.—Ditto, Rammelsburg’s, with lateral tubes, joined near the
top, and sealed in to carry the test liquor, to avoid frothing.

25 ,00 c. C.
t $
$1.50 2.00 each.

1594.—Ditto, Geissler’s Chameleon, having a lateral tube running
to the bottom.

2d D0 G. ¢.
io a
$2.00 2.50 each.
1595.—Burettes, Leslie’s, see Leslie’s Alkalimeters.
1596.—Burette Clamps. | Each, .50
1597.—Burette Swimmers, or Erdmann’s Float. BO
1598.—Burette Tips, with rubber attachments. BD

1599.—Burette Supports and Holders, see Supports.

OF CHEMICAL AND PHYSICAL APPARATUS. 3D

BURNERS.
1600.—Burners, Argand standard register, as used with Bunsen’s
Photometer. Kach, $4.00

1601 1607

1601.— Ditto, with flame apparatus, mounted on stand for spectral
analysis or polarization of light $6.00
1602.—Ditto, Bunsen’s plain. Each, $1.25
1603.—Ditto, with tripod on top, to support evaporating dish.
Each, $1.75
1604.—Ditto, ditto, with ring to regulate the flow of air into the
burner, to produce at pleasure blue or yellow flame.
Each, $1.35
1605.—Ditto, new French pattern with air regulator, consisting of
lever attached to the receiving tube, which raises and lowers at
pleasure a cap over the air-vent, and at same time graduates

the flow of gas. Each, $2.50
1606.—Ditto, ditto, with two holes in base of Burner, to attach to
retort stand, without star. Each, $1.75

1607.—Ditto, ditto, Bunsen’s improved new style of Burner, having
a rachet regulator in place of the ordinary air regulator, dis-
pensing with stopcocks, and graduating the flow of air and of
gas at the same time. It is simple, compact, convenient and
entirely new. | Each, $2.75
1608.—Ditto, ditto, having one receiver with double tube for gas
and air, regulated by one stopcock; and also having a lateral

jet, regulated by stopcock. A new invention, and powerful.
| Each, $7.50
Ditto, ditto, French, with universal joint and stopcocks for

1609.

the air and gas, for throwing the flame in horizontal or oblique
directions. Each, $10.00
1610.—Ditto, Bunsen’s blast, having the tubes for receiving gas
and air at right angles, with different size tips for regulating

the jet. Each, $7.50
1611.—Ditto, ditto, very small, for use in place of the mouth blow-
pipe for producing a very fine taper flame. Each, $5.00

1612.—Burner Attachment, for producing a gas blast, consist-
ing of two brass tubes terminating in one jet, one of which is
placed in the delivery tube of the ordinary Bunsen burner, and

the other connecting with the blowing machine. Hach, $1.00
1613.—Burners, Bunsen’s small blast, for fastening to the table,
with one extra tip. Each, $6.00
1614.—Ditto, Bunsen’s plain, with star and chimney. 6 200
1615.— Ditto, ditto, with star and percelain plate to catch the ashes
of the filter. Each, $2.5¢
1616.-—Ditto, ditto, with star, chimney and plate to catch the ashes
of the filter, and provided with a thumbescrew at the base to

raise and lower the burner. Each, $3.00
1617.—Ditto, ditto, plain, with two tubes. 6. BOO
1618.—Ditto, ditto, plain, with three tubes. | SE ODO

1619.—Ditto, Babo, with three tubes formed into one circular,

gh Ape OORT II Ge. eben Br PEE Ake
re nce a Es

OF CHEMICAL AND PHYSICAL APPARATUS. 37

opening at top, with star supporting a sheet iron chimney and
stopcock to regulate the flame; also haying a centre tube.
Each, $9.50

1621
1620.—Burners, Bunsen’s, with three tubes and caps, arranged so
that the flame touches every part of the crucible. Hach, $4.00
1621.—Ditto, Berzelius’s, having a sliding cap with thumb-screw at-
tachment, to regulate the flow of air without stopcock, otherwise
the same as the foregoing. Each, $7.50
(The two styles of Burners, Nos. 1619 and 1621, produce a
solid cireular flame with a centre flame, generating a high

degree of heat.)

1622.—Ditto, Bunsen’s, with four tubes. Each, $3.00
1623.—Ditto, ditto, six tubes. | ‘<< 2 ADO
1624.—Ditto, ditto, eight tubes. i S00

1625.—Burner, Griffin’s Blast Gas, with nine tubes grouped to-
gether, giving a very powerful heat when attached to a blowing

table and surrounded by a fire clay cylinder. Each, $13.50
1626.—Burners, Bunsen’s, French, with two tubes bent off in
separate directions. Each, $2.50

1627.—Ditto, ditto, with three tubes bent off in separate directions.
Each, $3.50

1628.—Ditto, Blast, terminating in six tips. 6.50
1629. —Ditto, Bunsen’s, newly invented, consisting of seven Bun-
sen burners, arranged in a circle, each burner having a cap to
spread the flame, all enclosed in a sheet-iron frame, which con-
centrates the heat, and, at the same time, supports the vessel to

be heated. Each, $12.00

38 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

1630 1631 1632 1625 1633

1630.—Burners, Crown or Rose, consisting of a common burner,
having a cap with the sides pierced, through which small jets.

of flame pass out. . Hach, $1.75
1631—Ditto, ditto, large size, or locomotive, producing a high
degree of heat. Each, $5.00

1632.—Ditto, ditto, ditto, with a lever attached by which the flow
of air and flame is regulated at the same time. A new inyen-

tion. Each, $10.00
1633.—Ditto, Mendelsohn, for heating watch glasses. “ $1.75
1634.—Ditto, with long tube and ordinary gas tip. 3 2.00
1635.—Ditto, Specstone, Bunsen’s, single tube. . 2.00

1636.—Ditto, ditto, Rose’s.. Smaller, $2.50; larger, $3.00 each.

1634 1637 1638 1643 1644

1637.—Ditto, Vulcan, cast iron top and bottom, dispensing with the
tripod. Each, .75

1638.—Ditto, Sand, flat shape, consisting of a hollow iron frame
itled with sand and cement. through which the gas exudes.

Kach, $1.25

1639.—Ditto, ditto, ditto, on tripod. 3: RO

1640.—Burner Forks, for holding burner when attached to a

retort support. Each, .50:

>

OF CHEMICAL AND PHYSICAL APPARATUS. 39

1641.—Burner Plates, porcelain, for holding the ashes when filters
are burned. Each, .75

“ 1642.—Ditto, tips, of silicated steatite for attaching to the ends of

common gas burners. Hach, .25 to .50
1643.—Ditto, tubes, or jets with flattened ends to introduce into
an ordinary Bunsen burner, to produce a flat flame. Each, .25
1644.—Ditto, furnaces, porcelain, to surround the burner to in-
crease the heat. Each, $1.25

1645.—Burnishers of Agate. a 1.50

1646.--Bolt-head experiment in Pneumatics. Apparatus for.
Kach, $4.00

1647.—Bell in vacuo. “« 4.00
1648.—Bursting Squares. Per doz., $2.50

1648.1—Colorimeter, for examination of sugars and syrups,
after Dr. Scheibler’s method.

1649 1656 1661

1649.—Candle Bombs, small glass bulbs, filled with colored
water and sealed, which explode when heated. Per doz., .40
1650.—Caoutchoue, unvulcanized, in sheets, for forming tubes,
covering jars, ete., cin. thick. Per square foot, .75
1651.—Ditto, vulcanized, ditto, ditto. ¢s 10
1652.—Ditto, Balls, pierced to attach to pipettes, syphons, ete.,
round and pear shape. Each, .50
~653.—Ditto, caps, vulcanized, for fitting glass tubes to glass
bottles, ete., 1, 2 and 3 tubes. : Each, .20 to .40

Ditto, Connectors. See Rubber Connectors.
Ditto, Stoppers. See Rubber Stoppers.
Ditto, Tubing. See Rubber Tubing. .
1654.—Capillary Plates, for showing the parabolic curve.
Per set, $2.00
1655.— Ditto, Tubes, in sets unmounted. Each, .40

40 E. B. BENJAMIN'S DESCRIPTIVE CATALOGUE

1656.—Capillary Tubes, mounted in japanned cistern. Per set,$2.00
1657.—Ditto, Tubing, 5 feet lengths. 3 ' EKach, .10
1658.—Caps for bell jars, globes, etc., of brass.
Sizes, $ tol 14 14 #1told 18 2 22th in.
dO 60 .65 10 0 ~— 80-85 each.
1659.—Ditto, for gas bags, ete.

4 & $ to 1 in. diameter.
0 OO .60 each.

Ditto, for deflagrating jars. See Deflagrating Covers.
1660.— Ditto, for galli pots, small jars, ete., silvered. Per doz., .10
1661.—Ditto, porcelain, for lamp chimneys, to économize and.

reflect the light. |

Nos. 1 2 3 +
50 .60 Od .90 each.
1662.—Canules, French.’ Per doz., $1.25

Capsules of glass. See Glass Evaporating Dishes.
1663.—Ditto, of horn.
PE OR OA OB ee A eee
20 24 382 86 45 56 .72 88 $1.07 per pair
Ditto, of iron. See Sand Baths.

1664 1667 1669 1672 1673
1664.—Ditto, ditto, transparent glazing inside, lipped.
Sizes, 5 6 7 in.
$1.20 1.40 . 2.00 each.

1665.—Ditto, of platinum, sizes as required. Per oz. (gold), $10.06
1666.—Ditto, of silver, sizes as required. i . 2.50
1667.—Ditto, of porcelain, nests of 5, without lip, glazed inside,

similar to watch glasses, very shallow. Per nest, $1.00
1668.—Ditto, ditto, 3 in nest. # th

Ditto, ditto, French. See Evaporating Dishes.
1669.—Ditto, ditto, with a sharp lip, nests of 4, very thin and
transparent. Per nest, —.80
1670.—Ditto, ditto, with rounding lip, nests of 4, with perpendicu-
lar sides and flat bottoms, about ¢ of an inch deep. Per nest, $1.00
1671.—Ditto, round bottom, without lip, glazed throughout, about
2 inches in diameter across the top and deep. —- Per doz., $2.50
1672.—Ditto, Plattner’s, flat bottom and straight sides, holding
about 4 ounce, semi Berlin. * ~ Per. doz., $1.25

“OF CHEMICAL AND PHYSICAL APPARATUS. 41

1673.—Capsules, Platiner’s flat bottom and oblique sides, holding

about ¢ of an ounce. of fine Meissen porcelain. Each, .20
1674.—Ditto, of porcelain, very small, for blow-pipe fusions, and
of extra hard and tough porcelain. Per doz., $1.20

1675.—Ditto, half-egg form, of extra fine and thin porcelain, to
sustain a high heat. | Per doz., $1.75
Ditto, with handles. See Royal Berlin Casseroles:
Ditto, other forms. See Digestors, Evaporating Dishes,
Combustion Boats, ete.
1676.—Carbonic Acid, liquified, in sealed barometer tubes,
enclosed in velvet lined leather cases. Each, $6.50
Ditto, ditto, apparatus. See Potash Bulbs.
1677.--Carbons, for Bunsen’s and other batteries,of French graphite.

Sizes, 6 7 10 in.
40 0 75 each.
1678.——Ditto, flat, + inch thick, 10x 6 in. Each, .75

1679.—Ditto, pencils, of pure graphite ,for the electric light.
Per inch, .6

1681

1680.—Carbonie Acid Generator, consisting of a glass jar, con-
taining a bell-shape gas holder and leaden tripod. The gas is
delivered through a gallows screw connector.

12 15 20 in. high.
$10.00 15.00 20.00 each.

1681.—Ditto, Water Apparatus, 1 quart capacity, made of glass
covered with reed netting, porcelain foot. Kach, $7.50

1682 | "1686
1682.—Carboys of Earthen Ware, with filter, for the manu.

facture of chlorine. Each, $10.00
1583.—Ditto, ditto, for the concentration of acid or ammonia.
60 100 litres.
$10.00 12.00 each.
1684.—Carthesian Imps, ordinary, black. Each, .20
1685.— Ditto, ditto, fine quality. Hach, .75 to $1.00
1686.—Ditto, ditto, with jar, additional. Each, $1.50
1686.1—Cases, to hold 6 bichromate battery cells. Boo

1687.—Caseroles, semi Berlin, ordinary form, with lip and
straight-flattened handle, glazed inside and outside.

Sizes, No. 00 0 1 2 BD 4
Price, .35 50 70 3=.85~——$1,00° 1.85 each.

=

1687 1688 1690 1691

1688.——Ditto,deep, for coloring pots used in manufacturing jewelry.
Sizes, 54 64 74 in.
Prices, $3.00 4.00 5.00 each.
1689.—Ditto, Royal Berlin, lipped, looped handle glazed inside and
out, 14 ounce capacity each. Each, .40
1690.—Ditto, ditto, lipped and round porcelain handle.
1 2 3 OZ.

.30 B5 AQ each.
1691.——Ditto, of finest French porcelain, glazed inside and out, ex-
cept the bottom, having cover and wooden handle.

Nos. 5 4 3 2 1 1 extra.
$1.90 1.25 1.50 2.00 2.25 4.00 each.

OF CHEMICAL AND PHYSICAL APPARATUS. 45

1692.—Caseroles, Meissen, glazed throughout, except the bot-
tom, loop handle.

Nos 3 Be 1
Vd $1.00 1.25 each.
1692.4a—Cassolettes, Lubin’s, of rosewood, for holding small
quantities of perfume. Per doz., $3.00

1693.—Cat Skins, for exciting electric apparatus. | Each, $1.00
1693.1—Caustic Holders, of ivory, with metallicends.“ 4.00
1694.—Cells, carbon, for fusion supports. e 50
1695.—Ditto, porous, French and German, imported.

AX4 23xX4 24x54 24x6 2x7$ 3x8 in.

12 1d 20) 230 45 00
1696.—Ditto, ditto, sizes above, 3x8. Each, .75 to $1.00
1697 .—Ditto, oval microscopic of plate glass, 14x 3 inches.

Each, .50 = 1695

1698.—Centimetre Measures, of boxwood, haying centimetres

on one side and English inches on the other. | Each, .50
1699.—Ditto, ditto, of ivory, in millimetres, up to 5 centimetres.

Each, $2.00:

1700.— Ditto, ditto, of ivory, having English inches on one side

and graduated up to 1 metre. EKach, $2.25
1701.—Charcoal Pieces, prepared for use in blow-pipe fusions.

4 pieces for .25

1702.— Ditto, Borers, Plattner’s, of steel,

with spatula handle.

Nos. 1 2 Seat
30 hy" 40 each.

1703.— Ditto, ditto, with polished cocoa
handles.
Nos. 4 5 6
50 .60 75 each. |
1704.—Ditto, ditto, with eight points, with 17 178 1704 1706
polished cocoa handles and brass ferule.

Nos. 7 8 9
$1.00 1.20 1.25 each.
1705.—Ditto, Helder, with platinum attachment and wood
handle. Each, $3.25
1706.— Ditto, Saw, small. " 50

1707.——Ditto, ditto, large. As 75

44 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

1708.—-Charcoal Spatula, steel, Plattner’s, cocoa handle. Ea. .50
1709.—-Ditto, Tongs, bent, 18 inches long, light weight:

Per pair, .75

a

HMA NANTAUAAAN

1709 1710 1713 1714 1715 1716

1710.—Ditto, ditto, bent inwards, with the insides rasped and
handles twine wound, for cold weather. Hach, $1.25

1711.—Ditto, Sticks, for breaking glass, according to size.
Per doz., .50 to .60
1712.—Chisels, of Steel, Plattner’s, for clipping ingots. Each, .50
1713.—Chloride of Calcium Jars, on foot, with tubulature at
side, near the bottom, for drying gases.

4 8 12 16 24 32 OZ.
65 85 $1.00 1.50 2.50 3.50 each.

1714. — Ditto, ditto, —
Tubes, small, straight,

assorted. Each, .15
1715.—Ditto, ditto, 2 bulbs,

8 inch. Each, .25
1716.—Ditto, ditto, bent %

ends. Each, .25 1719 1720
1717.—Ditto, ditto, large size; 12 to 16 inches. Each, .50
1718.—Ditto, ditto, straight, with small tubes inserted in a cork at

either end. | Kach, .20
1719.—Ditto, ditto, Marchand’s, U shape, with connecting tube.

Each, .50

1720.——Ditto ditto, U shape, plain.

. 6 8 10 inch.
30 0 .60 each.

5a eS te Ch ae

OF CHEMICAL AND PHYSICAL APPARATUS. 45

1721.—Chloride of Calcium Tubes, in setts of 3, each forming
around the other. Per set, .75

1722.—Ditto, ditto, ditto, with 3 bulbs, small.
4 to 5 inches. 8 in.
40 “75 each.
1723.—Ditto, ditto, U shape, Fresenius’ form, 2 bulbs
in each limb, and half-bulb in connecting tube.
Each, .75
1724.— Ditto, ditto, U shape, with drip in the centre.
Each, $1.00
1725.—Ditto, ditto, with stopcock in the drip.
Each, $3.50 1730
1726.—Ditto, ditto, V form, 9 inches high. Each, .60
1727.— Ditto, ditto, Weeber’s, U form, having 3 large bulbs.
Kach, .75
1728.—Charts, colored, showing the spectra of stars and metals,
according to Kir-hoff and Bunsen. Size, 28x40 Each, $3.25

1729.- sets of 3. 9.00
1730.— Ditto, of snow crystals, showing the different forms assumed
by frozen vapor. Size, 24x 36. Each, $4.00

1731.—Chlorine Gas Generating Apparatus, consisting of
glass flask, safety funnel, and delivery tube.

pts. qts. $ gal.
90 $1.10 1.35 each.
1732.—Ditto, ditto, with wash bottle.
pts. ‘ qts. % gal.
$1.15 1.35 1.90 each

1733.—Ditto, ditto, apparatus for generating, consisting of 1!”
lamp, pneumatic trough, iron stand, flasks. sand bath, etc.
Each, $10.00

46 k. B. BENJAMIN’S DESCRIPTIVE GATALOGUE

1734 1736

1734.—Chlorine Gas Apparatus, Silliman’s method. Each, $6.00
1735.—Ditto, absorbing apparatus, Bunsen’s, for use in volumetric
analysis, as described in Mohr’s titrir method, exclusive of

stand and lamp. Each, .75
736.—Ditto, ditto, Bunsen’s style. Lee A i
1737.—Ditto, ditto, Mohr’s, without jar. “ $1.25

1738.— Ditto, Meter, Descroizelle’s, graduated in 100 cc.“ 2.50
1739.—Ditto, ditto, Gay Lussac, graduated in 100 cc. 6966

1740.—Ditto, ditto, Mohr’s. 6. SFR
1741.—Ditto, Bottles, of cobalt glass, 1 litre, with glass cap, and
tightly-fitting joint. Each, $2.00

1742.—Ditto, Jar, stout glass for burning substances in chlorine.
Each, $3.00 to 5.00
1743.—Ditto, Safety Pipette, ac- ~
cording to Mohr, with safety tube, \ 4

rubber tube, and pinch-cock.
Kach, $1.00

Ditto, Gras Bottles. See Gas a
Bottles.

1744.—Ditto, Distilling Apparatus, for distillation of chlorine
and iodide of potassium, according to Fresenius. Each, $1.00
1745.—Ditto, ditto, according to Mohr, consisting of two flasks,
connecting tube, safety tube, and stopcock. . » Each, $1.50
1746.—Chime, of 2 bells. - 2.50

OF CHEMICAL AND PHYSICAL APPARATUS. 47
— 1747.—Chime, of 3 bells. Each, $3.25
—. 1748.—Ditto, of 5 bells. 3 He GO

i LD
Hi
i}

i
i
Hi
H
HH

|||;
TOE

U
1749 1750 1751 1755 1758

1749.

Clamps, wooden, for holding test tubes in the flame.
Each, .20

1750.— Ditto, larger, with a spring for holding larger tubes. “ 50

1751.—Ditto, heavy iron, with rod to attach to the counter. “ $1.00

17 52.—Ditto, in sets, with cork, lined jaws. Per pair, 3.00
1753.—Ditto, smaller, of iron, to attach to a retort stand, also
having cork-lined jaws. Kach, $1.25
1754.— Ditto, for watch glasses, Dr. Craig’s form. - 20
1755.—Ditto, ditto, Hoffman’s form. « 20
1756.—Ditto, ditto, Mohr’s form.
3 4 5 6 in.
"25 30 oo AO each.
1757.—Ditto, for holding hot test tubes, metallic, with wooden
handle. 7 Each, .50

Ditto, for batteries. See Binding Clamps.
Ditto, wooden, for burettes, pipettes, retorts, etc. See
Supports.
Clay Supports. See Crucible Supports.
1758.—Cobalt Bottles, with cap and long stopper, German glass.

4 1 02.
Bd * 50 each. See also Acid Bottles.
Ditto, Glasses, used in testing colored flame. See Colored

Glasses.
Coddington Lenses. See Lenses and Loups.

48 KE. B. BENJAMIN’S

1760
1759.

Coffee Machines, glass and porcelain, French,
: Each, $7.50
1760.— Ditto, ditto, porcelain, German, for preparation / 17°
of coffee for the table, by infusion. A very highly prized appar-
atus by those who use it. :
Nos. 3 4 5
$3.50 4.5 6.00 each.
Coils, Rubhmkorff’s. See Electrical Coils.
Colanders. See Straining Dishes, Baskets, Filters, ete.
1761.—Collection of Crown Diamonds, glass models, consisting
of Kohinoor and three others of the royal diamonds, in a nice
velvet lined, morocco case. Each, $20.00
1762.—Ditto, of artificial gems, showing the form of crystalization
of the precious stones; also, the different styles in which dia-
monds are cut, in a velvet-lined mahogany box. Hach, $20.00
1763.—Ditto, of glass crystals, in a velvet-lined box. “ 15.00
1764.—Ditto, of crystalographic, models in wood Viv-se’s. 104 picees,
Each, $20.00
1765.—Ditto, ditto, smaller, 34 pieces. / és 9.00:
1766.— Ditto, ditto, primary forms.
-1767.—Ditto, ditto, of glass, with strings, for showing their axes.
1768.—Ditto, of 10 rare specimens for spectral analysis, with
tubes haying platinum ends, in a highly polished case of
boxwood. Complete. Per set, $7.50
1769.— Ditto, of objects for examination by the solar microscope,
mounted, on cork. $25.00

- ee te a A eS eee Ie
GEpPe ey
ree tr et

OF CHEMICAL AND PHYSICAL APPARATUS. 49

-1770.—Collection of Nitrogen disengaged during combustion
of organic bodies. Simpson’s apparatus for. | 00
Collections of apparatus. See the latter part of this book.

Ditto, of minerals, fossils, etc. See Minerals.
1771.—Collision Balls, set of 6 ivory balls, mounted on mahog-
any frame, graduated arc. $20.00

Baits 1772.—Ditto, ditto, set of 5 balls, of hard wood, mounted. = $3.5
Collodion Balloons. See Balloons.
1773.—Colored Glasses, for fancy glass blowing, in rods about

3 feet long. | Kach, .2&
1774.—Ditto, Glass Plates, used in testing colored flame.
Size, 3x3 4x4 5xd inches.
1d 20 25 each,
Color Tests. See Tests papers. 3
1775.—Color Test Slab, of porcelain, having 12 cavities; 44
x24 inches. Each, .75
1776.—Combustion Boats or Capsules, of porce.ain.
23 to 3 d+ to 4 6 in.
20 510) 0 each.
1776.a—Ditto, ditto, of platinum. Price, per grain, .3

1777.—Combustion Furnace, Storers, consisting of 2 tubes, sur-
rounded by a sheet-iron frame, having the top covered with
wire gauze. Hach, $1.50
1778.—Ditto, Liebig’s, as improved by Stenhouse, of sheet iron,
for use with charcoal.
Length, 18 in., $2.75 24 in., $3.25.
1779.—Ditto, Bunsen’s, having 25- burners. EEO Hach, $60.00
1780.—Ditto, American. es 50. 00

50 E., B. BENJAMIN’S DESCRIPTIVE CATALOGUE

1781.—Combustion Furnace, French, having i9 burners.

ee Each,
= $30.00

(ee

—=

—_—_
ees A) >=
——————

Ei rig. 4.
1781
-1782.—Ditto, ditto, for use with coal oil, as invented and employed
by &t. Clair Deville, with one burner, dropping tube and doors

to set in for a draft, (without tank.) Each, $12.00
1783.—Ditto, ditto, with 2 burners. ¢ 18.00
1784.—Ditto, aitto, with3 “« << as 22.00

1785.—Ditto, ditto, with 4 burners. " _ Each, $30,00

OF CHEMICAL AND PHYSICAL APPARATUS. . jt

1786.—Combustion Furnace, ditto, of St. Clair Deville, with
5 burners, without tank. $40.00
1787.—Ditto, ditto, tank for oil. Each, $25.00
1788.—-Ditto, Lamps. See Combustion Furnaces with gas
1789.—Ditto, Foil of Copper, for enveloping the tube in organic

analysis. | Per ounce, .5
1790:—Ditto, Tubing, of genuine hard, infusible Bohemian

glass. (For sizes, see Glass Tubes.) Per lb., $1.25

1791 1791 1795 . 1799 1800

1791.—Ditto, ditto, § to 3 in. diameter, drawn to a point and bent
for Liebig’s furnace. 18 24 in.
40 ‘50 each.

| 1792.—Ditto, Tubes, of best infusible Bohemian glass, sealed at
one end, for nitrogen determinations.

18 24 in.

3d 5 each.
1793.—Ditto, ditto, porcelain, straight, + inch bore. Each, .50
1794.—Ditto, ditto, fine French, 14 in. bore. “ $1.50

1795.—Ditto, ditto, Meissen porcelain, flanged at both ends, and
glazed inside.

a 1 2 in. diameter.
10 $1.00 2.00 each.

1796.— Ditto, Bricks, of fire clay, for use with Bunsen’s furnace.
Each, .20

1797.—Ditto, Supports, for the trough. 6 TG
1798.— Ditto, Troughs, of fire clay, for supporting the tubes, 6
to 8 in. long. . Eaeh, .20
1799.—Commutators, or pole changers, for reversing the electric
current. Each, $9.00 to 15.00.

| 1800.—Compasses, mounted on brass stands, swung on agate

52 -E. B. BENJAMIN'S DESCRIPTIVE CATALOGUE

. pivots, resting on fine steel points, with polished wooden cases -

for carrying them. Each, $2.50

———— S. -__

tC il

1801 ° 1803 1806
1801.—Compasses, plain, steel bearings. ./ Mach, 275
1802.—Ditto, brass cases, with spring stop and agate bearing.

No. 1, $1.00 No. 2, $1.50 each.
1803 .—Ditto, watch form.
No. 4, $3.50 No. 3, $4.00 each.

1804.—Ditto, ditto, finer graduation, an accurate registry, enclosed
in brass cases, with cover, especially for geologists. Each, $6.00
1805.— Ditto, ditto, German silver. “ 6.50
1806.— Ditto, ditto, mineralogical. mounted, as above, with a shding
and swing indicator, showing the angle of the drip. Each, $15.00
1807.—Ditto, ditto, very fine Geological, German silver-mounted
watch case, hung on agate, with a spring top, having also a
sun dial arrangement, with universal meridian and registered
meridian ef chief cities in United States and Europe. Ea. $27.50
1808.—Compound Bar, for showing the expansion and con-
traction of two metals joined together, under the influence of

extremes of temperature. Each, $1.00

1809 1810
1809.—Condensers, Liebig’s form, of glass, small, unmounted.
Each, $1.00

$10.—Ditto, ditto, large, mounted. 2.00

BR possi ade tp oe

sas es
Beka Pees

ee ae ht cd

4

OF CHEMICAL AND PHYSICAL APPARATUS.

1811.—Condensers, Liebig’s form, japanned tin. Ea. $3.50
1812.— Ditto. brass soldered, mounted on stand. 6.00
1813.—Ditto, ditto, brazed, with movable joints, sliding
rod, glass tube, fitted, etc., complete. Each, $7.50
1814.—Ditto, V form, with small tube fitted into each
opening, with a rubber stopper Each, .50 to $1.00
1815.— Ditto, electrical, Riess’s, for frictional electricity,and
showing the theory of electrical condensers. Fa., $20.00
Caustic holder. See No. 1693.
1816.—Condenser, Schodber’s, new German invention,

1818
1817.— Condensing Tubes, with two stopcocks, as per
illustration; the wide part $ of an inch in diameter.
Each, $3.00
1818.—Ditto, ditto, with stopcock on the bend.“ — 3.00
1819.—Ditto, ditto, straight, with 3 stopcocks, as per
illustratio Hach. $4.00
1820.—Ditto, ditto, U form, with two of the stopcocks
on one limb, and one on the other, so that the li-
quid can be drawn off in small portions. Each, $4.00
1821.—Condensing Chamber, for use with air-pump,
with movable interior tube, etc. Each, $9.00
1822.—Ditto, Cylinder, with stopeocks, complete,
size, 7 x 14 in. Each, $9.50
1823.—Ditto, or boiling flasks, with lateral bent
tube, as used in connection with Liebig’s con-

denser, for boiling small quantities of liquids.
1 2 3 0Z. capacity.
18 20 each

15

16934

Ih

—————_j4

SSS

a ————_—_—_—_—_———_———

We —

1822

1823

o4 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

1824.—Condensing Worm, of block tin, enclosed in a zine tub,
used for distilling water, etc., according to size.

Each, $2.50 and upwards.
1825.—Ditto, ditto, of glass, enclosed in a glass receiver. Each, $1.75
1826.—Ditto, ditto, with iron support. tp

Ditto, Pumps. See Pneumatic Pumps.
1827.—Conduction of Heat, downwards, slowly in fluids, appar-

atus for showing, Each, $2.50
1828.—Conductometer, for illustrating the comparative power
of different metals for conducting heat. Hach, $2.50

* 1829.—Cones, dissected. 6h 29D
1830.—Cone of Platinum , for supporting the filter in Bunsen’s

method of rapid filtration. Price, .75

1832
pacman
1833 1834 1835
1831.—Connecting or Drying Limb, Mits cherlich’s or Liebig’s.
Each, .35
1832.—Ditto, Tube, for nitrogen apparatus. BO:
1833.—Ditto, ditto, of glass, or three way tubes, Y shape. ee
1834.—Ditto, ditto, with three openings, 'T shape. TS
1835.—Ditto, Tubes, bent at different angles. hho
1836.——Ditto, ditto, with two or three lateral tubes. eee
1837.—Connectors of Brass, with male gs
and female screws. Each, .38.
1838.—Ditto, ditto, with double male screw,

without stopcock. Each, .85
1839.—-Ditto, ditto, with double female screw, 1837 1838 1839
without stopcock. (See also stopcocks and bladder pieces.) Ea. .30

OF CHEMICAL AND PHYSICAL APPARATUS. dd

Connections, for batteries. See Binding Screws and
Clamps. nf
1840.—Connectors, gallowsscrew, Hare’s. Each, $1.00
prea 7 Dine unvulcanized rubber, 2 in. long.

5 fs + in. bore.
40 BO < 60 doz.
i1842.—Connectors, vulcanized rubber.
+ 5 + 3 $ in.
2D 30 AO 45 oo ver doz.
-

; 1854
APPARATUS FOR MAKING CHLORINE.
1843.—Cooper’s Mercurial Receiver. Each, .50 to .75
Copper Foil. ‘ee Combustion Foil.
1844.—Ditto, Sheet, for galvanic experiments. Per lb., .50
1845.—Cork Teats. Per doz., $2.00
Corks, rubber. See Rubber Stoppers.

—1846.—Ditto, champagne. 46 $6.00
1847.—Ditto, velvet, long and small. 4 10
1848.—Ditto, chemical, carefully selected.

Nos. 0 to 5 d 6 7 8 9 10

te BOR Os ade T8 16 per doz.
¢ $ 1 1g 1 1g 13
AS eG se Be Bt 35 41

12 13 ee 2 in.
00 OD .60 .65 per doz.

1849.— Ditto, extra large and flat. Per doz., .75
1850.—Cork Borers, set of 12, each borer having a
handle of ordinary brass. | Per set, $4.00

1851.—Ditto, ditto, set of 12, each best German make. 1850
s te 4 fs 2 3% Ys 38 4 oe 4 Hein.diam’r. Per set, $4.50

~

56 E. B. BENJAMIN'S DESCRIPTIVE CATALOGUE

1852.—Cork Borers, set of 6. | Kach, $2.25
1853.— Ditto, ditto, set of 3. <s 1.10
The ordinary quality not kept in stock; the above are of the
very best hardened brass.
1854.— Ditto, ditto, of steel, wooden handle.
¢ 16 4 2 in.
$1.50 1.70 1.80 2.00 each.
Ditto, Files. See round files and rasps.
1855.—Ditto. Knife, for cutting corks.

Each, .25
1S56.—Ditto. Pressers, of cast iron. “ .50 1857 1858
1857.—Ditto, ditto, of steel, usual style. Each, $1.00
1858.—Ditto, ditto, with fine teeth and extra nib. ah ee
1859. , ditto, heavier. “ 1.00
1860.— Ditto, Serews, for pocket. 6c. 5a
1861.—Ditto, ditto, larger, with wood hanéles. £6 3) Sts

1862.—Ditto Lined Tongs, of steel, for a hot tubes.
Each, $1.25
Cotton lamp-wick. See Wicks.
53.—Covers, convex, of glass, for covering Beakers, etc.
3 34 4 44 5 6 in.
$2.50 3.00 3.50 4,00 5.00 6.00 per doz.
1864.—Ditto, glass, flat.

2 24 3 4 5 6 in.
0 1d $1.00 1.25 1.50 2.00 per doz.
Single covers, 20 per cent. higher.
1865.—A full set of ditto, one each size. 65
1866.— Ditto, ditto, with a hole in the side, for stirring rod.
2 24 3 4 5 6 in.

}
15 $1.00 125 1.50 2.000 2.50 per doz.
Single covers the same style, 20 per cent. higher.
1867 .—Ditto, with a hole bored in the centre, to receive a funnel,

3 4 5 6 in.
$2.00 2.00 3.00 3.50 per doz.
Single ones, 20 per cent. higher.
1868.—Ditio, flat, round French plate glass, 2 in. Lach, .25
1869.—Ditto, flat, square, ground glass.
2 4 d 6 7 8 9 10 in. |

40 $1.00 1.50 2.00 240 3.00 3.25 4.00 eacn.
Single glasses, 10 per cent. higher. ;
Ditto, other, flat. See glass plates.

OF CHEMICAL AND PHYSICAL APPARATUS. 57

1870.—Covers, glass, with knob, useful for covering
‘choice specimens or small apparatus when laying
on the table.
4 ! 7 in.
50 “75 each.
1871.—Ditto, microscopic, very thin glass, cut in circles.
Per doz., .35; per ounce, $4.00

1872.—Ditto, ditto, cut in squares. ts 30; é $3.00
1873.-—-Cremometer, Chevalier, with jar and thermometer.

$1.50
1874.—Ditto, Quevenne, with jar and thermometer. 1.00
i875.—Ditto, glass foot, graduated, 0 to 12. .60

1876.—Crucibles, assay of unglazed porous clay, American. r
Per doz., $1.00 *

1877.—Ditto French, unglazed white porous clay. doz. $2.50 a

1878.——Ditto, Beaufay, French, soft. nearly white material, tall, nar-

row form, with spout, used for fluxing pots and for fusing enamel.

NO. HEIGHT. WIDTH, | PRICE.
1 9 13 $0.05 each.
2 24 13 Me
3 23 1? ar ae
4 oe 2 09 *
5 34 24 10°
6 44 Qi 1206
4 43 : ABs
8 5 22 2008
9 D4 3 ae
10 6 34 ey
12 7 Ait BU. 3
Wok 4 3 | WS
16 104 54 | 1.30 «
18 12 64 | 2.00

1879.— Crucible, Beaufay covers, round.

13 to 3 4 to 6 in.
045 08 each.
1880.—Ditto, ditto, triangular, assorted sizes
Each, .0¢
1881.—Crueibles, iron, with covers, 3 to 4
ounces. Each, $1.00

1882.—Crucibles, plumbago, or black lead,

58 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

round, with lip suitable for the fusion of the most refractory
metals, gold, silver, brass, steel, iron, glass, ete., not subject to
crack, and may be used repeatedly for most metals.

Moe CR ck CC BIO TB eee Es BG
20 25 30 25 45 50 55 .75 $1.00 1.15 1.31 1.47 1.63 ea.

1883.—Crucibles, Plumbago, covers, Nos. 1 to 4,

Each, .10
Above No. 4, .02 extra, each number.

1884.—Ditto, cast iron. |
> pt. pts.
$2.50 2.75 each.
1885.—Ditto, porcelain, from the Royal Berlin fac-
tory, with covers, glazed inside and out, except the bottom, uni-

form thinness.

NO. DIAMETER. CONTENTS. PRICE.

000 1 inch. + ounce. $0.10 each.
00 bales Hight 15
0 14 ee 8 ee 25 ee
1 1Z “« ee ma 28s
29 4 6“ 1 “ce AO “e
3 24% Bea a0
4 3 ‘<6 4 ““ .60 6“
5 34 Sie 2D 58

1886.—Crucibles, Meissen, tall form, with covers, glazed through-

out.
NO. DIAMETER. | DEPTH. - CAPACITY, ‘PRICE.
10 8 inch." 4 inch. 15 grains. ii 10 each.
9 1 “6 3 6 40 6 13
8 Boe 86 | + ot 2idrachms.;| 16 “
6 13 ‘“ 12 ‘“ 64 ‘“ | 20 ~«
5 te oS eS 12 ounce. Oe.
Aes: 24 ‘“<“ 1g “é 9 ‘“ .B2 6“
3 24 ee 2 “e 3 oe A0 ee
9 22 T3 22 “6 ; 4 6 50 *
+ 3 “ 23 £623, 6 T4 75 “ :
1887. —Crucibles, unglazed, semi-porcelain, round, tall, with lip
and._covers. 7
Now) ee Be OB OT Oo ee
Capacity,

Price, .15 .20 .25 .85 .40..45. 55 16> 75 85 $1.00 each.

OF CHEMICAL AND PHYSICAL APPARATUS. aY

18874.—Charcoal Moulds, oblong, of wood. Ea. $1.25

CS

1889 1891-92 1393 1895

1888.—Crucibles, full nests of the above, as 1887. Each, $5.00
1889.— Ditto, glazed, porcelain, flat bottom, with covers.

6 8 12 16 oz.
40 AD5 dD .65 each.

1890.— Ditto, unglazed, biscuit ware, conical form, perforated cover
and gas reduction tube.
Nos. 2 1
AO 50 each.’
1891.— Ditto, conical form, of biscuit, flat bottom, and flat cover,
perforated to permit the escape of gases, used for fusing nitrate

of silver.
14 13 in.
20 30 each.
1892.—Ditto, tubes, for the above. | Each, $1.25

1893.—Ditto, Platinum, of the best French hammered, which is
generally conceded to be superior to the English in quality.

4 4 3 1 ie 2 on.

According to quantity. . Per gramme, .40 to .45
1894.—Ditto, Silver, 2, 4, 6, 8 cunces. | Per oz., $5.50
1895.—Ditto, Metallurgists, or poellons, of fire clay. Each, .20
1896.—Ditto, Sand, or Hessian, in nests, small fours. Per nest, .05
1897.—Ditto, ditto, small fives. se 05
1898 .—Ditto, ditto, large fours. - 14
1899.—Ditto, ditto, large fives. “ 15
1900.—Ditto, ditto, round sixes. «6 .20
1901.—Ditto, ditto, triangular sevens. f 30
1902.-—Ditto, ditto, ditto, eights. “6 35
1903.—Ditto, ditto, single No. 8. Each, .25
1904.—Ditto, single French No. 7%. Re ee
1905.—Ditto, ditto, No. 4. Per 100, $10.00
1906.—Crucible Covers, sand or hessian, aul Each, .10

1907.——Ditto, ditto, large, round. «40

60 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

1908.—Crucibles, roasting. Per doz., .75
1909.—Crucible Moulds, of boxwood, for makine charcoal cru-
cibles, for quantitative blow-pipe assays. Fach, .73

a

' ha

Si a)
1912 tne oe

1910.—Ditto, artto, Plattner’s, of brass, in four pieces, for making
small crucibles of clay. Kach, $4.25
Capsules, blow-pipe. See Mixing Capsules.
1911.—Crucible Supports, of fire clay, for supporting crucibles
in a furnace, to keep them at a distance from the grate.
Kach, .16
Ditto, Tongs. See Tongs.

1912.—Cryophorus, Wollaston’s, double bulb. $2.0
1913.—Ditto, ditto, smaller, or single bulb. 1.75
1914.—Crystal Drainers, conical. :
3 4 5 in.
0 55 .75 each.
1915.—Ditto, ditto, hemispherical.
3 4 5 6 in.
330 40 00 .70 each.
1916.—Crystallizing Dishes, of glass, on three glass feet.
3 34 32 in.
0 60 | .75 each.
1917.—Ditto, ditto, round, of thin Bohemian glass, flat bottom,
with perpendicular sides, in nests of 9. Per nest, $2.00
In nests of 4, the smallest. « to
1918.—Crystallizing Dishes, of porcelain, large oval shape, with
cover. Each, $5.00

Crystallizing ditto. See flat bottom evaporating dishes.

OF CHEMICAL AND PHYSICAL APPARATUS. 61

Crytallizing Kettles. See kettles.
Cubic Centimetre Flasks. See Litre flasks.

1924 1926 1927 1930

_ » 1929

1932
*

1922

1919.—Cupels, of pure French bone-ash, from the same manu-
facture as those used in the French mint; each cupel being
carefully wrapped in cotton, and then enclosed in paper.
Nos; 1°. « 2 3 4 5 6 7 5
Bape Daag Le ae ae 12 in.
Price, 35. .45° 50 ..60.° .75 = 95° $1.25. 2.25 per doz.
1920.—Cupel Holders, or Trays, ofiron, containing 12 partitions
for holding cupels when several assays are under examination.
2 Kach, $1.00
1921.—Ditto, Moulds, of brass, used in forming the cupel.
Up to No. 5, $2.50; larger, $3.50 to 5,00:
1922.—Ditto, ditto, of steel, Plattner’s, for cupellation before the
blow-pipe, consisting of two cupel moulds, different sizes, with
corresponding pestles and a support; the cupels are exposed

to the flame upon the moulds. ' | Each, $2.75:
Ditto, Furnace. See Furnaces.
1923.—Cupping Glasses. French. Per doz., $1.25
1924.—Cups, annealing, American. sf 1.00
1925.—Diitto, ditto, French. «“ 2.50

1926.— Ditto, porcelain, for feeding the sick and infants, plain.
Per doz., $2.50
1927.—Ditto. ditto, stout. | 6 3.00
1928.—Ditto, ditto, covered, and swan neck. a 4.50
1929.— Ditto, for medicine, small. «6 3.00

62 k. B. BENJAMIN'S DESCRIPTIVE CATALOGUE
1930.—Cups for Medicine, larger. Per doz. $3.50
1931.—Ditto, ditto, mounted on feet. as 6.00-

1932.—Ditto, ditto, scoop shape. * 75

1933

1943

1933.—Ditto, for Seidlitz’s powders, of porcelain, having two par-
* titions, one side to receive the acid and the other the salts, so
that they become mixed in drinking or pouring out, producing

constant fermentation. — Each, .75

Ditto, porous. See Cells, perous. -
1934.—Cutting Pliers, steel, ordinary 65ND
1935.—Ditto, ditto, extra strong, for crushing minerals. “ $1.50
1936.—Cuvettes, or oblong drainers. oie
1937.—Ditto, Daguerrian, of fine Royal Berlin vorcelain, having
lip in one corner, about 6 to 9 inches. Each, $2.00

Cylinders. See Porous Cells.
1938.—Ditto, glass, opened at either end.

4x6 : 4x7 4x9, “ 40
1939.—Ditto, ditto, 33x6, 32x83. ene
1940.—Ditto, plain, on glass foot, flanged tops.

t 6 8 10 12 in.
35 AO 50 5d .60 each.

1941. Ditto, tall, straight side, and ring aruend the top, for obsery-
ing color of gases, viz., chlorine, etc., 30x 3 inches. Each, $2.0
1942. Ditto, plain, on glass foot, with ring around the tap,
roughed for glass covers. —
5 6 8 10 12 13 15 20 in.
OO. OO. Oe A5 0 52 dD -75 each.
_ 1948.—Ditto, ditto, pouring, lipped, on glixs foot
5 6 8 10 12 13 15 2¢ in. high
00. 0d: ..40 0 OD 7 60 .70 each.

Cle eg Sec eeh ee eee gle eel ames ks Oe te,
a ee “ et ae SET Re ue i eh RS <
As ENS av any het cise ‘a
Sy eee ee

ae

OF CHEMICAL AND PHYSICAL APPARATUS. 63

1944.—Cylinders, pouring, on wood foot, for specific gravity hy-

drometers, with flanged tops. Per doz., $6.00

Ditto, ditto, with glass foot, for mercury. See Mercury Jars.
1945.——Ditto, glass, graduated into cubic inches.

5 12 20 30 30 c. In.
10 $1.15 1.65 2.25 3.25 each.

1950 1954

1946

— 1946.—Datto, ditto, with lip, graduated into cubic centimetres

5 10 25 50 100 200 250 300 500 1000 centimetres.
00.60 75 $1.12.1.75 2.25.2.50 2.75 3.00 3.50 each.

1947.—Diito. ditto, French.
200 c. C. $2.25 500 c. ¢. $3.25 each.
1948.—Ditto, on glass foot, with pouring lip and double graduation.

25 50 100 200 250 500 1000 c.c.
$1.20 1.40 2.00 2.20 2.50 3.00 4.00 each.

1949.—Ditto, ditto, stoppered, or mixing bottles.
25 50 100 200 500 1000 ec. ¢c.

$ 3 1 1 1 1
$1.30 2.00 2.25 2.75 3.75 4.50 each.
1950.—Leslie’s, 100 ¢.c. in 10. Each, $2.25
1951.—Ditto, graduated, of glass, pouring lip and wooden foot.

250 500 1000 gr.
$1.25 1.50 2.00 each.

1952.—Ditto, French, of exactly even width inside, and carefully
graduated, very useful where exact results are demanded.
10 15 25 grammes.
1953.— Ditto, of glass, with pouring lip.
500 1000 grains.
to $1.00 each.

bo OR F Agi ek tae ee Thats dsaithnge Mattar pe tr PO NG enrlc hay PN ae
4 Aa Ss t S34 oe
ES ie
64 k. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

1954.— Cylinders, for electric machines.

10 to 12 13 to 15 18 in.
: $1.50 2.00 2.50 each.
1955.—Cylinder, 100 fluid grains, graduated to 10 fluid grains
stoppered. | Each, $1.50
1956.— Ditto, 500 grains in $ grains, stoppered, glass foot. * 2.25,
1957.— Ditto, 500 grs., without stopper, pouring lip, * (Cr ee
1958.—Ditto, 1000 grains, =“ . et OS
Carre’s Ice Freezer. See Ice.
1959.—Day and Night Thermometer, of glass. 4.00
1960.—Davy’s Safety Lamp, for coal miners, with key. 5.75.

1961.—Decantin Jar, porcelain, with six tubulatures-and two
3 ’

knobbed handles, for the washing of powders and their separa-

tion into different degrees of fineness, and for decanting liquids.

8 16 20 25 Ibs.
$4.00 6.00 7.00 9.00 each.

1$62.—Decanting Jars, for Collodion.
1963.—Ditto, Syringes, glass. Each, .25 to $1.00
1964.— Ditto. Tubes, 6in, long, din. bore, both ends
smooth, for decanting small quantities of liquid
at a time, so not to disturb the sediment. Ea., .05 Io
Decim-l Seales. See Centimetre Measures.
Decigzallon Measure. See Metrical Equivalents.
Decoction Strainers. See Emulsion Mortars.
Decomposition of Water Apparatus. See Water De-
composition. 3
1965.—Deflagrating Covers, of Tin.
Each, .10

1966.—Ditto, ditto, with spoon. “ — .25
1967.—Ditto, ditto, and hook. 20
1968.—Ditto, ditto, of brass. Ba
1969.—Ditto, ditto, with spoon. “ = .75
1970.— Ditto, Soke tO

1971.—Ditto, Globes, for burning phos- -
vhorous and oxygen gas. 1969 1970 1971, 1972, 197

ow 12 15 in.
$1.25 2.25 3.25 each.

Ditto, Jars. See Bell Jars.
1972.—Ditto, Stands, or salvia of Tron, to supp: rt the defla-
grating globe when reverced. tach, €1.00

OF CHEMICAL AND PHYSICAL APPARATUS. 65

1973.—Deflagrating Taper Holder, or socket. AO
1974.—Ditto, Cup, on metallic stand, with heavy iron {oak for
holding phosphorous, to burn under an inverted globe contain-

ing oxygen gas. $1.50
| Dentists’ Furnace. See Furnaces.
~ 19%75.—Dessicators, of glass, composed of a small glass. jar,

roughed on the top, and a flat ground glass cover. Each, $1.00:

1982 1983 1985 1981

1976,—Ditto, composed of two 16-ounce jars, nicely ground and cut
glass, with their necks ground together, for drying substances
in a confined atmosphere over sulphuric acid; also for cooling

crucibles before weighing, flat, polished top. Each, $2.50
1977.—Ditto, ditto, round top. « 2.00

1978.—Dessicating Apparatus, consisting of bell jar, resting on
| a flat glass slab, containing a porcelain acid dish and porcelain
capsules, or watch glasses

6. 8 in.
$3.00 5.00 each.

Ditto, Baths. See Drying Baths.
1979.—Dessicator, oblong, consisting of glass plate, tray, and
oblong bell receiver, ground to fit exactly, to keep substances
: dry while weighing. $2.00
--__: 1980.—Dessicators, Porter's. Each, 1.50
he 1981.—Ditto, Schrotter’s, to insert into the tubulure of an open
3 mouth bell jar, for cooling substances in dry atmospheric air

; at ordinary atmospheric eooaieta | $1.50

ae Dessicating Ovens. ‘See Drying Ovens.

Bay —1982.—Ditto, Pans, three partitions, 5 inches diameter. Each, 1.25
es 1983.—Ditto, Pans, six partitions.

fat er Ad 54 64 in. diam.

oars S115”

1.30 1.50 each.

66 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

1984.—Dessicating Plates, porcelain, pe 5 to 6 inches.

Hach, .75

1985.—Ditto, ditto, earthen, perforated, 3 to 5 inches, for drying

crystals, ete. Each, .50
1986.—Ditto, ditto, porous, 34 to 54 inches. 6 pO

1987.—Ditto, Apparatus, Fresenius’, complete. $20.00

1988.—Ditto, ditto, Fresenius’, for drying at 100 deg. Celsius, con-
sisting of a copper water bath, dr ying tube, a flask to contain
sulphuric acid, ete. $7.50

1989 1990
1989.—Dialyser. Small, .50 Large, .75
1990.—Ditto, with jar fitted, extra. $1.25

Diamond Models. See Crown Diamonds.
Ditto, Jar. See Electric Diamond Jar.
1991.—Ditto, Sparks, for burning in oxygen Prices vary
according to the size and quality required.
1992.—Diamonds, for glass cutting, whole set of keys, complete.

Each, $5.00

1993.—Ditto, for writing on glass, w vith bone handle and silver
ferule. Each, $3.00
1994.—Ditto, ditto, with ivory handle. € 6.00
1995.—Ditto, ditto, with larger spark, size No. 1. . 7.50

1996.—Ditto, ditto, with still, larger spark, size No.2. “ 12.00
1997.—Ditto, ditto, with very long spark, fine ivory handle.

. Each, $20.00

1998.—Diamond Mortars, of steel, as used in blow-pipe analysis

for crushing minerals, Plattner’s usual form. Each, $5.00

1999.—Ditto, ditto, with brass collar and screw to prevent any

escape of the powder when choice specimens are being crushed.

Each, $7.50

2000.—Differential Thermometers, Leslie’s, with glass con-
nections between each limb and stopcock in the center.

Kach, $4,00

2001.—Ditto, ditto, plain. — $2.50 to 3.50

RNR Sep sr ee sink te are onan Sn PRN es ae Cert ies SreNM taR Ae ad RISO Wars Cor A
RSL pe oe Ree ae CEE Slit puntos
Pry Pinar LOR Tage k A a air ct

Rie ee Sy Ree ae et ;

Mf ARE ;

OF CHEMICAL AND PHYSICAL APPARATUS. 67

Decomposition of Water by Galvanism. See Bunsen’s
Apparatus, under Apparatus.
-— 2002.—Digestors, semi-Berlin, flat bottom, 2 in. diam’r, Each, .12

| f
2002 2005 2006 2012
2003.—Ditto, Meissen. . Each, .18
2004.—Ditto, Royal Berlin, with oval bottom,
flaring top. Each, .50
2005.—Ditto, Plattner’s, flat bottom, flaring top.
2 24 4 in.
2d 10) 50 each.

Ditto. See also Evaporating Kettles.
2006.—Dippers, hammered copper, without
seam, round, iron handle, 1 litre capacity.
Each, $2.00 2007 2008
2007.—Ditto, iron, for pouring metals in assay.

Bowl, 3 in. 5 in. diameter.
40 0 each. :
2008 .— Ditto, tinned, shallow, with long handles, for pouring.
5 54 6 in.
.60 10 .80 each.
Ditto, porcelain. See Casseroles.
& 2009.—Dipping Needle, small, with brass support. $1.50
2010.-—Ditto, ditto, larger. Each, $2.25 to 5.00

2011.—Dishes, iron, countersunk, tinned, French, conical shape,
with handles on either side, used for boiling sacharine matter,

5 in. deep and 10 in. diameter. Each, $1.50
2012.—Ditto, earthen, deep, round, and flat bottom, for holding
a acids and acidulous solutions. Imported to order.
10 15 20 gallons.
$10.00 12.00 -15.00 each.
2013.—Ditto, porcelain, round, with lip, for recciving the ashes of
__ the burning filter. Each, $1.00
- 2014.—Ditto, ditto, smaller, without lip. «“ 15

ei a STR ae ek OC eo Set ale Os) CP a ey gt Sap e ze
; ee it we me Pep ie PANE EAR i : roe yb IS ‘ i
y sie ter ary a. 8 foe RI abo eed e PY Tey. COUN bape
Fiek eR A ee ee oP GR MAE MSE tater ROS lt ERO AN EE PRS AL OR
as oi 1 aA PAE Mere PU a eee er ay ye
* ; i SEP ee hands

68

F. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

taining acids or other liquids.
2 oe
OB eo

2015.—Dishes, Draining, porcelain, to stand under bottles con-

CO Re BE a a ce ae,
DR Ba PR RO) GBP ae alge
2016.— Ditto, Roasting, of porous clay, sizes, 1$ in. to 10 inches.

Per doz., .75 to $5.00 .
2017.—Displacement Apparatus, consisting of a funnel and
bottle fitted by means of a cork.

1

2 litres.
60

“75 each.
2018.—Ditto, ditto, consisting of a separatory funnel fitting into

a glass receiver by means of a tightly fitting cork.

% gall.
3.00 4.50 each.

2021

2022 2023
2019.—Ditto, ditto, with ground joint of light blown glass, without
stopcock, 6 ounces.

15
2020.— Ditto, ditto, of glass, consisting of separatory funnel, fitting
into a glass receiver with ground joint.
pts. qts. ¥ gall.
$4.00 5.00

6.00 each.
2021.—Ditto, ditto, consisting of a separatory funnel, by a glass
ground joint fitted into a separatory bottle, with a ground glass
stopcock at foot.
pts.

qts.
$6.00

+ gall.
7.00

1 gall.
8.00

12.00 each.

i

OF CHEMICAL AND PHYSICAL APPAKATUS. 69

2022.—Displacement Apparatus, Guibourg’s, consisting of an
oblong glass vessel, stoppered, and with stopcock in the tube,
fitted by a ground glass joint into a receiver having ground

stopeock at foot; capacity of receiving vessel, 14 gallons.
Each, $12.00
2023 .—Ditto, ditto, ditto, with a communicating tube between the
displacer and the receiver. Each, $14.00
The joints of the foregoing apparatus are double ground

with the finest emery.

a MOTT R

2024 2026

2024.— Distilling Apparatus, for distilling water, spirits, oil,
etc., consisting of a polished copper countersunk still, tinned
inside, and a worm of block tin enclosed in a tub of zinc, having
a receiving and discharging tube.

1 2 3 5 galls.
$12.00 16.00 20.00 30.00 each.
2025.—Ditto, ditto, nickleized.
1 2 3 d galls.
$14.00 19.00 25.00 35.00 each.

2026.—Ditto, with water bath, having a tight fitting water joint
and jacket, steam escape, water supply pipe, with thermometer,
and extra handles.
1 2 3 5 10 galls.

24.00 32.00 40.00 60.00 80.00 each.

Ditto, ditto, Miirrle, for the use of pharmaceutists and
chemists, complete. See Miirrle’s Apparatus, at the close of
this volume.

2027.—Distilling Flasks, for fractional distillation.
Per doz., $1.50
2028.—Ditto, Apparatus, of iron, with safety valve.
pts. qts. 1 gall.
$3.75 4.50 6.00 each.
Ditto, Retorts. See Retorts.

70 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

Ui

2029 2031 2032
2029.— Distilling Apparatus, Wurtz’s, for fractional distillation,
complete, with thermometer. $10.00
2030.—Ditto, ditto, glass part only. 2.50

2031.—Doebereiner’s Hydro Platinic Lamp, for generating

hydrogen, and producing an instantaneous light by throwing

a jet of the same upon a piéce of spongy platinum; a very
convenient lamp for smokers, etc., of German embossed glass.

: $2.50

2032.—Ditto, ditto, of German plain glass. 3.00
2033.—Ditto, ditto, French form, having a small lamp attached
which is thrown before the light by the same movement by

which the jet is projected; plain. $7.00

Ta
ah

oe
u) mT
ih

SD

2035 2040 2041 2041a

2034—Ditto, ditto, vase shape. 10.00
2035.—Dome, porcelain, for Bunsen’s lamp. 1.00

Douceleur Apparatus. See Apparatus. Drainers. See
Crystal Drainers.

2036.—Drawing Tools, in a small box. containing dividers,

pencils, etc. $1.00 to 4.00

es
a

OF CHEMICAL AND PHYSICAL APPARATUS. Se

2057. -Drawing Curves. ‘ Each, .25

—2038.~-Ditto, Protractors, horn. eb
2039.—Dropping Glasses, Schuster’s, plain. 6 OO
2040.—Ditto, ditto, with ground stopper. (Ae

Ditto, Bottles. See Acid Bottles.
9041.—Ditto, Pipette, with bulb top, covered with rubber film,

graduated 100 c.c. 7d:
20414—Ditto, Pipettes. See Pipettes.
2042.—Ditto, Tube, plain, 4 to 10 inches. Each, .10 to 25

Drying Apparatus. See Dessicating Apparatus.
2043.—Drummond Lamp, new French form, for petroleum.
. $15.00

a al Ti

Pm

Pp |

ti

2044 2054

2044.—Drying Baths, copper, 10 inch, with double walls and
two tubulatures, one for thermometer and the other for escape,

including thermometer. : Each, $15.00
9045.—Ditto, ditto, soft, soldered.

8 10 12 inchs.

$9.00 13.50 18.00 each.
2046.—Ditto, ditto, 8 in. with thermometer. “40:00
2047.—Ditto, ditto, 10 inch. 6" FROG
2048.—Ditto, 12 inch. C6 8.00
2049.—Ditto, ditto, nickleized. Each size additional. 2.00
2050.— Ditto, ditto, of tin. Each, 2.50

2051.—Ditto, ditto, porcelain, for arvitie filters over hot water.
Each, $1.00
2052.—Drying Bath Regulator, Kemp’s, improved. “ 3.00
2053.—Ditto, ditto, with Bunsen’s late improvement, consisting of
an additional spring to neany the pressure of the mercury.
Each, $3.50

v3 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

2054.—Drying Bath Electrical Regulator, for keeping the

heat of the water bath constantly at an even temperature.

2055.—Ditto, Bottles, Barker's, small size. _ Each, $1.00
2056.— Ditto, ditto, large size, ‘ 1.50
205

057.—Ditto, Oven, or hot air bath, having single walls and de-
tached perforated shelf cn legs, 8 inches. $7.00

2058 2050
2008.— Ditto, ditto, with thermometer. $3.50
2059.— Ditto, ditto, Rammelsberg’s conical shape, of copper, hard,
soldered, haying detached shelf.

Small size, ; larger size,
$3.00 4.' 0 each.

2060.—Ditto, Plates, porous clay. Each, .50

2061

2061.—Ditto, Tubes, Lieb-zs. | Each, .50
2062.—Ditto, ditto, Mitscherlich’s. 6 560)
2063.—Druggist Mill, for grinding roots, herbs, ete. $15.00
2064.—Dutch Metal. Per book, .10
2065.—Dyers’ Clot, for mordaunting. Per yard, $2.00

Dye Pots. See Deep Casseroles.
Earthen Dishes, perforated. See Dishes, Dessicating
Apparatus. :

73

2066

ELECTRICAL AND GALVANIC APPARATUS.

Hourz’s wonderful Induction Hlectrical Machine as improved
by BoRCHARD, and first brought into the United States for sale,
by myself, in 1869. It is the most wonderful discovery, in regard
to the length of the spark yet known

a spark 6 in. long having
been obtained from a 12 in. plate machine, and glass perforated
12 in. thick. The remarkable machine, imported by myself, now in
the possession of Prof. Blake, of Brown’s University, has a 30 in.
plate, and has produced a spark about 16 in. It was the result of
the combined intelligence of Messrs. Holtz, Poggendorf, Rienz, and
Dove; was manufactured expressly for me by Mr. Borchard, and is
believed to be the best single machine ofthe kind in the world
for practical purposes. It must be borne in mind that the ma-
chines I import are all made for me by the inventor, and the secret
of the long spark has never yet been discovered by the greatest
sayans in Europe, and I presume that it will not be questioned but
that those made by the inventor HIMSELF must inevitably be fur
superior to any imitations cr copies; nevertheless, should my cus-
tomers desire them, I am prepared to furnish imitations of this
celebrated machine as low as any house in America. It should © >
borne in mind that these machines, with the extra appurtenances,
can illuminate large Geissler tubes, pierce thick glass, show rotation
by electricity, manufacture Ozone, ete. They are light and portaLle.
and easily excited by the use of a sheet of hardened vulcanized
rubber and a cat skin, and when once excited, are well known to
retain their electricity from four to five hours. The new and

V4 - E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

ingenious collecting and condensing apparatus, invented by C. Van
Brunt, Esq., of this country, consisting of a multiplication of the
points for the collection of electricity, and.a tin foil condenser, as
described in the journal of Franklin Institute, may be attached to
this machine at my establishment. |

2066.—single machines, Borchard’s make, 30 in. plate. $225.00

2067.— ee ee ee 4 24 in. ee 175.00
2068.— “ re ier. Riboo) 140.00
2069.— “ - . hae aig <0 100.00

2070.— “ es n SSP aE et ee 65.00

2071.—Double machines, Borchard’s make.

2072.—Dielectric Machine, as constructed by M. Carré, haying
revolving wheels of hardened rubber, the electricity being sup-
plied by friction on stationery rubbers located in front, so that
electricity may be generated in every kind of weather. This
machine is the most simple and powerful of the static con-
duction machines; being scarcely affected by atmospheric
moisture, it becomes charged in a few seconds, and sustains
its action indefinitely. With induction plates from 44 to 60

TYssn. BONE CHP Oy % ws
@: BYBCrvA Vad 13 Ae gue” ae

oro BEMY WIM
Jorn! Aste Lane
bsfrony&e. oy fpe Zapic’

‘

1 Sw syeo zesqh fo Lebo sbbeispse pgp 12 -gersceq OL, L phmeg SUq eps] mec cxérh ents ro eteue wpe

conuLEG 1 1 py6 2s DELIOL das f1gA sng UDIEp OF (pe Bpdzicsy ybbsisene 7 pom Ron

wscpiuEe sug sbbyrsucee SLE Of Fe Farcer qu broaeq pipge aug m0) sebursqion {Ok Ulat-qpsee cpeuiios|’ msuce. 2 ‘pip.

f ee #

ine embjoheg 1 IW [ps MmoLq? sq L cs coupgensh IDAIEG foes. mpo nse plet-cyse2 MOLE fo S886. Ms! a sway |

z

Vi kage OL pHphaicyy ybbsuspae SLC pEIWR wor msuaysceneg, pd we" pa fpe oe ‘ex ijpter] oe erbentieg |
. cs “Sqsbe pe 4 oe: imsbLoaeweny fo fps Hous WSCHIUG 52 201g pa 6" Ou. BOWE Hotes’

js2k pag s epors grin? ‘suq It Je sakes {OL oue Leda su ‘Gjectiuc wscpare fo par ODE Of Reummc sug Rooq: waste SLI

"ea

o ~ wtp ie trip ins ste yee ae Se nin ote Pou’ (10 msge g a on saat pare Te ct :

ees »

| : ypihouiwe. ik Ik
UGOR AE aa) fee WEMSE Cie des
=i ee wee es Ha ee ee C =e a = SIED Ss

puctons| Byste scpiwee eng ips ot tps peer Hons mscpiwce pis i

es

Remeibenne em step

ee jy cjoceuic iscpINeE { noun, aone) ecommeng, pees wsrcpniee ge eabbjhat
ot ewbjoheq tk pe LEPC oF muesnione OF ibe. wrrcone WEUIPLIUEE of tHe cpeet sq out | BLony: wh youk. exbesyeucs ww .

=

_mmnajsceisi® syeee misopiiee {OL Wegcs] ‘§2 wey v2 (uincrerk ece’ Fe. fpok Renexste jsike. davunsniee OL

ee

opeswey sng t eomersee sqq {2h0 congener’ ApIcp Wersses pe AOHIE of eyecacics qrepsiteq L de

_mporo pp. peetsq 3 iy SH MGT IGI2! Dinh gUq @nwwEL mer TUG qua ence’ sBqi UY oor ong, Te [0 P tps. woe Le

Lys WwICHIE peud Lebiceeiieq mre MELOGICEG |

ae
x

’

>ATADGQHOZ ETEGIBIGHY

4 * jo EER - a >
: : eas:
sige

A0eeHOris

a

OF CHEMICAL AND PHYSICAL APPARATUS. vo

Electricity .— Continued. |
centimetres, it gives a constant flow of sparks from 12 to 28
centimetres; it illuminates brilliantly Geisler tubes of over a
yard connection; it pierces glass from 8 to 12 millimetres
thick; in less than a minute the medium size ‘uachine will
charge to overflowing a battery of 12 large jars, ete. It also
performs the usual experiments of large coils, ete.

The price of a small machine giving from 30 to 40 milii-
metre sparks, is $30.00

rn

2072 2080 2087

2073.—Dielectric Machine, No. 1, plates 32 to 44 millimetres.
$125.00
2074.—Ditto, Noe 5, 44 to 60 “200.00
2075.—Plate Electric Machine, with prime conductor of brass, and
supported by pillars of glass, plate 24 in. diameter. $65.00
207 6.—Ditto, 20 inches. 45.00
2077.—Ditto, 16 “ 39.00
2078.—Ditto,12 “ with japanned prime conductor. 25.00
2079.—Electrophorus, | 9.00
2080.—Pith Ball Electrometer. oe 1.00
2081.—Gold Leaf — « 6.00
2082.—Head of Hair. 1.50
2083.—Leyden Jar, pint. 1.50
2084.—Ditto, ditto, quart. 200
2085.—Ditto, ditto, $ gallon. 2.75
-2086.—Ditto, ditto, 1 gallon. | 3.25

087.—Set of Leyden Jars. 6.50

~/

76 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

Electricity .— Continued.

2088.—Electrical Batteries, in walnut boxes.

4 6
$11.00 16.00
(Other sizes in proportion.)

2089.—Diamond Jars, 2 quarts.
2090.—Plain Discharger, glass handle.
2091.—Jointed Discharger.
2092.—Universal Discharger.
20$3.—Electrometer Jar, quart.
2094.—Leyden Jar, with movible coatings.
2095.—Ditto, ditto, with bells,
2096.—Electrical Bells, 2 bells.
2097.—Ditto, ditto, 3 bells.

2098.— Hiero’s Fountain.

2099.— Electrical Flier.

2100.— Insulating Stool.
2101.—Spotted Tube.
2102.—Luminous Plate.
2103.—Illuminating Egg Stand.
2104.—Amalgam.

12 qt. jars.
28.00 each.

2099 2101
Each, $4.00
2.25

5.00

10.00

2.90

3.50

6.00

2.00

3.00

18.00

1.25

5.00

$3.00 to 5.00
2.00 to 2.50
2.00

Per box, .40

2105.—Biot’s Hemispnere, for showing electricity resides only on

the surface. $8.00
2106.—Metallic Plates, for dancing figures to suspend. 1.25
2107.—Ditto, ditto, on insulated stand. 6.50
2108.—Ditto, ditto, larger, with double columns. 12.00
2109.—Thunder Houses, mahogany. 8.00
2110.—Gas Pistol. 1.25
2411.—Dancing Images, per pair, 1.00

wei gprs 5G

Bf
ey
se
¥
Bixt
&
i
P
&: ”

pone rps. tg ar
= SAF RSs Pn ON

ements ss?

as

~ aes

Fai

ta Ek ei Mae ow

_ OF CHEMICAL AND PHYSICAL APPARATUS.

Electricity .—- Continued.

V7

on 2108 2121
2112.—Electrical Orrery. $4.50
~ 2113.—Pith Balls, per dozen, 25
2114.—Electrical Sportsman, Jar and Bird. 6.00
2115.—Ditto, Pistol. 2.50
2116.—Miser’s Plate. 250
2117.—Rod of Glass, for illustrating vitreous excitation. * 1.00
2118.—Ditto, Shellac, for ditto, ditto. 2.00)
2119.—Galvanometer, Astatic. 15.00
2120.—Ditto, Tangent. 10.00

(2121.—Ditto, Sensitive. — $35.00 to 60.00

2122.—Thermo Electric Pile.
2123.—Contracting Helix.

2124.—Helx on Stand, 3 poles.

—2125.—Ditto, with ring armature, or magic circle.

78 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

Electricity.— Continued.

2126.—Page’s Revolving Electro Magnet. $8.00
2127.—Model of Telegraph, with spool and signal key. 8.00
2128.—Telegraph Clock-work. 45.00
2129.—Induction, or Ruhmkorff’s Coils, capable of throw-

a very small spark. 50

2130.—Ditto, ditto, ditto, 4 in. spark, $12.00 °
2131.—Ditto, ditto, ditto, }in. « | 15.00
2132,—Ditto, ditto, ditto,4 in. 5, 30.00
2133.—Ditto, ditto, ditto, 1 in., with contact breaker. 60.00
2134.—Ditto, ditto, ditto, 2 in. a6 $6 100,00
2135.— Ditto, ditto, ditto, 4 in. . 200,00
2136.—Ditto, ditto, ditto, 6 in. sé “ 300.00
2137.—Ditto, ditto, ditto, 9 in. « « 460.00
2138.—Ditto, ditto, ditto, 12 in. oy os 500.00
2139.—Current Changers. Each, $3.50 to 10.00
2140.—Geissler’s Tubes, plain, each tube marked with the name of
the gas it contains. Prices, from $1.25 to 30.00

2141.—Ditto, ditto, for use with the spectroscope. Each, 3.00

OF CHEMICAL AND PHYSICAL APPARATUS. 79

Electricity .— Continued.
9142.—Ditto, Vacuum Tubes, in which the yacuum is so perfect

that the current will not pass. _ Each, $6.00
9143.—Ditto, tubes in form of a rose. $6.00 to 18.00
9144.—Ditto, ditto, form of a lyre. Each, 7.00
9145.—Ditto, ditto, form of a star. « 5.00
9146.—Ditto, ditto, form of a U, very brilliant. « 9.00
9147.—Ditto, ditto, form of a Marguerite. “« 5.50

2150 21504
214S,.—Geissler’s Tubes, form of a cross. $5.00 to 7.50
Various other forms; single and double spirals, conical and
flat spirals, filled and empty. These tubes were selected by
myself in my late trip to Europe, and are of the very best
make, and brilliant color.
2149.—Geissler’s Tube, filled with mercury, showing the effect of

phosphorescent light by friction. $9.00
2150.—Geissler’s Tubes, Reflectors, showing small tubes, and multi-
plying the number by reflection. Each, $5.00

21504—Geissler’s Tube Revolving Apparatus, for revolving Geissler’s
Tubes, by the use of Electricity. The magnets cause the motion
to be uniform and regular. Price, $20.00
2151.—Geissler’s Tube Supports, of brass, on mahogany base, with
shifting clamps to hold different size tubes. Each, $10.00

80 E. B. BENJAMIN’S DESCRIPTIVE. CATALOGUE

Electric Batteries.
Salts of Mercury for Batteries. See Chemicals.

2151 2152 2162

2152.—Bunsen’s large Cells, with rolled zine plates 4 in. thick and’

French sawed carbons, jars 8 in. high. Hach, $5.00
2153.—Ditto, ditto, ditto, jars 6 x 3.50
2154.—Ditto, ditto, ditto, jars 5 ¢ x 3.00
2155.—Daniel’s Batteries. *, 2.50
2156.-—-Grove’s ditto. “ 2.50
2157.—Smee’s ditto. | 62S eRe

2161

2158.—Leclanche’s Constant Battery, consisting of a rod of car-
bon placed in a porous pot, which is ‘hen packed tightly with

a mixture of peroxide of manganese wud coal, outside of which

is a glass jar, in a corner of which is placed a rod of zinc. The
exciting liquid is a solution of sal ammoniac. This battery is now

the most popular one of its kind in both Germany and France.

OF CHEMICAL AND PHYSICAL APPARATUS. $1

Electricity .— Continued.
2159.—American Bichromate Battery, improved pattern, quart
cells. | $7.00
2160.—Ditto, ditto, pint cells. B00

2164

2161....-Six cells of the larger battery, with connections complete,
areunged in black walnut box, with partitions and_ handles,
convenient for removing on and off the lecture table. $40.00

The foregoing arrangement of batteries is the most conve-
nient, cleqnly, and available form in use. It is arranged for the
employment of one solution, which can be kept readily pre-
pared at hand in a tight, ground stoppered bottle. When the
battery is not in use, the zinc may be raised above the solution
in the jar (which should be only half-filled with the same);
and when the operator desires to renew the contact, the zinc is
simply plunged into the fluid by pressing down the sliding rod.
The top of the battery being always closed by a tight-fitting
brass cap, no offensive fumes can escape to influence chemicals
or the atmosphere in the vicinity. The operator will readily
perceive that one cell can be employed alone, or any number
to the extent of six. The seasonable employment of the sliding
rod obviates any danger of shocks in connecting or disconnect-

MEE SEI Ra OEE eee SNS ke PR
€ ted PCa ears oa
é a Pee ok ier? ae

82 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

ing apparatus with the battery; the power of this battery com-

bined is about equal to that of ten Bunsen’s large cells, and

the carbon and zincs can be connected or alternated at pleasure.
2162.—French form, ditto, large size, holding about 2 litres.

$10.00
2163.—Bunsen’s Dipping Battery, consisting of 6 cells, zincs and
carbons of which are raised and lowered by pulleys. $40.00

2164.— Ditto, ditto, consisting of two large 3-gallon cells, each cell
having five zincs and carbons alternated, the whole raised and
lowered by windlass crank. $90.00

2165.—Ditto, ditto, three large cells. 65.00

at =e

RTT, ]
{ie TTT WH:

7 = Pal HI Ip ty
i &

2166
2166.—Ditto, Medico-Electric, for use of Physicians and paralytic
persons. | 3 $12.00
2167.—Electro-Thermal Battery, of bismuth and antimony, oblong
shape, with joimted support. : $30.00
2168.—Eleetrical Lamps, Duboscq’s, with clock-work and
reflectors, complete. 3
2169.—Ditto, ditto, Serrin’s, French, with clock-work, complete,
large size. $450.00
2170.—Ditto, Browning’s, with automatic regulator, and move-
ment to adjust the height of the carbon-poles while burning,
very useful in showing spectra in screen experiments. $30.00
2171.—Ditto, regulated by hand, with reflector. 15.00
2172.—Ditto, enclosed in a dark chamber, with reflector. $20.00.
2173.—Electrical Apparatus, with clock-work, for changing
the current from one battery to another, without disconnecting.
$50.00

OF CHEMICAL AND PHYSICAL APPARATUS. 83

Electricity .— Continued.

2174.—Electrometer, Thompson’s, with scale and screen, as im-
proved by Kirchoff. $75.00
This new and unique form of Electrometer is deserving of
attention, on account of its extreme delicacy and facility of in-
dication of very small amounts of electricity, which can also be
quantitatively measured. Prof. Kirchoff has added a valuable
and interesting photometric attachment, rendering it a very
easily read, and most complete instrument. It is certainly a
great step in advance in the quantitative estimation of elec-

tricity, and is receiving great attention from the Physicists of
the old world. (See illustration on next page.)

2168 2169

2175.—Elutriating Apparatus, Schultze’s, for the mechani-
cal analysis of soils, clays, ground ores, ete. Each, $5.00
2176.—Ditto, Noebel’s Apparatus, for washing soils in analysis.
Each, $4.50
2177.—Ditto, ditto, with support. “« 8.50
2178.—Ditto. See Decanting Jars.

84 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

2171 2174 2175

2179.—Enamels, French, for enameling jewelry. For gold en-
amel, white. Per oz. $1.00
2180.—Ditto, ditto, black. Hf 1.25

2181.—Ditto, for enameling gold—transparent blue, green, ceru-
lean blue, lapis lazuli, opaque Ror and transparent yellow.
Per oz. $1.50

2176

2182.—Ditto, ditto, turquoise. Per oz. $3.00
2183.—Ditto, ditto, transparent red. fs 7.50
2184.—Ditto, ditto, for enameling copper; deep red, blue, lapis

lazuli, turquoise, dark green, transparent violet. Per oz. .25

2185.—Ditto, ditto, for ditto; black, transparent green, clear yel-
low, deep yellow. Per oz. .50

OF CHEMICAL AND PHYSICAL APPARATUS. 85

2186.—Enamelers’ Files, of hardened steel, for cutting round

glass tubes. Each, $1.50
2187.—Ditto, Knife, cocoa handle. 50
2188.—Ditto, Plates, of refractory clay.
48 43 bd 54 in.
41d 18 20 .25 each.

2189 2190 2191 2194

~~ 2189.—Endosmosis, apparatus for diffusion of gases, without

stand and bell-glass. $1.50

: 2190.—Eolipile, or Ether Jet, glass apparatus, for showing com-
bustibility of the vapor of ether. 50
2191.—Ditto, Lamp, or Spirit Blast blow-pipe of brass, with
vertical jet. Each, $2.00
2192.—Ditto. ditto, of tin. af 1.00

Eprouvettes. See Test Glasses, and Specimen Tubes.
Erdmann’s Float. See Burette Swimmers.
2193.—Ether Distilling Apparatus, consisting of a glass
retort, receiver, alchohol reservoir, etc., capacity of retort,
1 qt. 2 qts. 1 gall. — 2 galls.
$3.85 5.90 7.15 10.00 each.
Ether Bottles. See Bottles.
2194.—Ditto, Extraction Apparatus, Bohemian, capacity of
receiver * gallons. Each, $14.00
| 2195.—Ditto. ditto. See also Displacement Apparatus.
: i 2196.—Kudiometer, Bunsen’s, 500 millimeters in 4. $3.50

2199 2200 2201 2202

Hoffman’s, V shape, mountea. $7,00
2198.— Ditto, Large Lecture, Hoffman’s, mounted on stand. 15.00
2199.—Ditto, Hoffman’s, with two parallel limbs, one sealed and

2197.

one open. $2.00
2200.—Ditto, ditto, with parallel ae one sealed, and one drawn
at the top. $2.50
2201.—-Ditto, ditto, with two parallel limbs and one stopcock at
the bottom. $3.50
2202.—Ditto, ditto, with two parallel limbs and one stopcock at the
top, and one at bottom. $4.00
2203.—Ditto, Ure’s, straight, 200 ¢. c. in 4. 2.00

2204.—Ditto, ditto, U form, 60 c.c. in #. LY 3.50

é

OF CHEMICAL AND PHYSICAL APPARATUS. Sz -

Evaporating Dishes, of glass, seh sides and flat
bottoms. See Crystallizing Dishes.
2205.—Ditto, Bohemian glass, round bottom, nests of 4. $1.25

mo

a> ‘

2206 220s 2210 9213- «16
2206.—Ditto, ditto, ditte, lipped, in nests of 6. 1.50
2207.—Ditto, ditto, of iron, glazed inside and out, with lip, deep

and hemispherical.

5 6 7 in.
$1.25 1.35 1.75 each.
2208.—Ditto, of platinum. 3
ecm 24 3 in.
According to quantity, per gramme, 35 to 40.
2209.—Ditto, silver.
2 24 3in. Per oz., $4.50

2210.—Ditto, of Royal Berlin porcelain, with spout glazed inside
and out, except the bottom.

Nos. 00 0 1 2 3 4 dD 6 7
Diam. 13 0z. 2 3 + 6 8 10 14 24
AS -.22. 28. 85. :.40:- 46; %.82). 375,95

8 9 10311
45 0z. 2qts.35 6
$1.30 2.00 3.00 3.85 each.

2211.—Ditto, ditto, nests of 7, from 00 to 5. $2.25
2212.—Ditto, ditto, nests of 6 to 11. 11.00
2213.—Ditto, ditto, Royal Berlin, without lip, 8 inches diameter.
Each, .20
2214.——Ditto, of glazed, Royal Saxon, without lip.
2 in. ae aE
10 ; .85 each.

2215.—Ditto, ditto, with lip glazed, inside and out.

Nos. 5 4 3 2 1 0 00 000
$1.10 1.40 1.75 2.00 2.75 4.00 6.00 10.00 each.

2216.—Ditto, ditto, Royal Berlin, porcelain, shallow form and flat
bottom, stout, glazed throughout, except the bottom, with spout.

Nos. 1 2 3 4 5 6 7
be eee 3 4g 7 10 16 oz.
22 0 20 42 00 .66 .83 each.

2217.—Ditto, full nests of the above. $2.75

88 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

2218.—Evaporating Dishes, French, hemispherical, glazed
throughout, except the bottom, of very thin white porcelain.

40 a 70 84 97 110 m.m.
2D 20 40 0 .60 7d each.
9919.—Full sets of the above. $2.50

2220.—Ditto, thin semi-porcelain, watch-glass form, with spout,
glazed S

Nos. 2 3 4 5 6
A 18 20 25 0 .40 each.

9991 .—F ull nests of above. $1.00
2222.—Ditto, ditto, deep hemispherical.
Nos. 1 2 3 4 5 6 re 8 9
Be Bi RE a te FO ae pare
ae 20° 25 30° 35 45° 60) 85. FO -enenee:
2223. s of 6 of the above. $1.25
2224. “Ditto, 9 66 2.15

a

Wi

2225 2226 2227

2225.—Ditto, ditto, watch-glass form, stouter, glazed inside. An
excellent dish for quick evaporation.
Nos 6e of) 68 20 8 AO Ae Ro 8 Be EG
Cap’y
AS 5d .65 .75 .85 $1.00 1.30 1.75 2.10 3.50 5.00 ea.
2226.—Ditto, ditto, Thuringian semi-porcelain, lipped, and heavy
rim around the top.

Noa 8): 295°; 19 BART Oo BS a rad
2402. 1lqt. 14 2 3. I-gall. 2 3 5
15 85 $1.00 120 1.75 210 3.50 5.00 9.00 each.

222%7.—Ditto, semi-porcelain, flat bottom, round lip, and glazed
inside and out, except the bottom.

Nos. 4 3 1
$1.00 1.25 2.00 each. 7
9228.--Ditto, with rim around the top, sharp lip. al
11 114 124 in. 2228
$1.50 1.75 2.25 each.

Ditto, ditto. See also Capsules.
2229.—Ditto, or gold washing pans, 30 inch diameter, of Russian
iron, countersunk. Each, $1.00
2230.—Ditto, ditto, or trays of lead, small. ed 50

OF CHEMICAL AND PHYSICAL APPARATUS. 89

2231.—Evaporating Kettles.

2 - 8 gallons.
$3.50 _ 8.50 each.
Exsicecators. See Dessicators.

fh [ |
mH I
| ir
2240 2233
2232.—Eye Baths, of glass. Each, .25 |

2233.—Evolution Flask, funnel ard deliy-
ery tube (without delivery flask). $1.25 |
2234.—KEye Models, for showing the reflec- |}
tion on the eye lenses, with the use of |\ITj
spectacles. Each, $15.00
Faraday’s Retorts. See Retorts.
2235.—Files, enamelers’, for cutting glass.
Each, 1.00
2236.—Ditto, round, half round and flat.

Q
rye
a e2
1 h3

4

¢

6

‘

8

9

=
-——

EEE
- +3) ——

4 dD 6 7 in.
20 20 O05 AO each.
— 2237.—Ditto, triangular.
cp obae On 4 5 6 8 in.
18 25 30 AQ 50 each.
2238.—File Handles. Each, .10
2239.—Filtering Apparatus, porcelain. $8.00
2240.—-Ditto, ditto, Plantamour’s, tin bath for
hot water. $2.50
2241.—Ditto, ditto, of copper, with porous
strainer $1.25
2242 .-- Ditto; ditto, Beale’s quick V5
2243.---Ditto, ditto, for rapid filtration, by

Prof Bunsen’s method, under atmospheric pressure. $11.00

90 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

The foregoing apparatus has come into extensive use both in
Europe and in this country: filters precipitates, ete., which, with
the old method, would take, in many familiar instances, four to ten
hours to filter properly, in a tenth of the time taken by the old
method. Alluminous, Sillicious, and ordinary sulphide of hydrogen
precipitations, are quickly filtered from. So convenient and useful
has it become, and so generally recognized by the profession, that
it is considered almost an indispensible requisite of every laboratory.
The illustration shows the arrangement of this pump; full descrip-
tion of the method of employment of this apparatus, and several of
its excellencies may be found in Johnson’s latest edition of Fres-
enius’s Quantitative Chemical Analysis, from which I extract the
following observations, and I have recently introduced an improye-
ment in the working of this apparatus, by which the filtrate may
be received directly into a beaker, for the suggestion of which I am
indebted to Dr. Gibbs, of Harvard College.

“This apparatus is screwed down on a board fastened to the wall, in such
a manner that each separate piece of the apparatus is held by a single fasten-
ing only, in order to prevent the tubes from being strained or broken by the
possible warping of the board. On opening the first pinchcock, the water
flows down the discharge to a depth of thirty feet, carrying with it the air
which it sucks through the upper tube. The second pinchcock is used to
regulate the flow of the steam, when the first one is completely open. The
discharge pipe should have a fall of about thirty feet, and be of a diameter of
half-an-inch, and end in asewer or some other arrangement, to convey the water
away. The filtration is made in the following manner. The receiver standing
in a metallic vessel is connected by a small glass or rubber tube, with the dis-
charging tube on left of the illustration (having previously been fitted with
filter). At first, the delivery is gradual, but in a moment or two the filtrate
runs through in a continuous stream, often so rapidly that one must hasten
to keep up the supply of liquid.

“The Platinum Cone is placed in the bottom of the glass funnel, the dry
paper filter then introduced in the ordinary manner, moistened, and freed
from all adhering air bubbles by pressure with the finger. A filter so arranged,
and in perfect contact with the glass when filled with a liquid, will support
the pressure of an entire atmosphere without the least danger of breaking,
and the interspace between the folds of the platinum foil is perfectly sufficient
to allow of the passage of a continuous stream of water.”

2244.—Filtering Apparatus, Bell Glasses, with tubulature at
foot, for above. See Bell Glasses.
For other appurtenances of Bunsen’s quick filtering appar-
atus, see their appropriate heads in this Catalogue.
2245.—Filter, calico, a very strong and durable filter, conical,
with folds. $2.50

OF CHEMICAL AND PHYSICAL APPARATUS. 91

2246.—Filter Dryer, of porcelain. $1.00
2247.—Filter Holders, japanned. Each, 3.00
2248,—Filter Hooks, of glass, to hang between the funnel and
filter. Per doz. .50 to .75
2249.— Filtering Rings, of unannealed wire. s 60
2250. —Ditto, ditto, porcelain, to attach to an upright stand, single
arm. Each, .50
2251.—Ditto, ditto, ditto, with three arms, to place over a glass
vessel when filtering into it. Each, .35

2252.—Filtering Flasks, extra stout, to bear pressure. “ .50
Filter Covers. See Covers.
Filter Stands. See Funnel Supports.

2253.—Filters, felt, conical shape, for filtering wines, etc.

Nos. 8 12 16
$1.00 2.00 8.00

2248 2251 2253

2254.—Ditto, French, cut in a circular form, packs of 100 each,
grey, genuine Prat-Dumas.
Nos. 25 33 40 45 50
EG 10 1 an 174 in.
dD ‘75 $1.00 —-1.25 per pack.

Per 12 sheets, Nos. 80 100
26 38 in.
305 $1.00

2255.—Ditto, ditto, white, in packs of 100. :
2 3 4 5 6 U4 15 164 in.
15-20 25 35 45 55 $1.25 1.50 per pack.
2256.—Filtering Paper, white, French, 15x18. Per ream, $4.50
2257.—Ditto, ditto, Berzelius’s, similar to Swedish, but firmer:
Per quire, .75

2258. Dita ditto, Chardin, exceedingly stout and heavy, for

making filtering pulp. Per sheet, .20, per ream, $30.00
2259.-—-Ditto, ditto, best German laid paper, extra heavy, 19x22.

Per quire, 65, per ream, $9.00

1g.
‘*-t

92 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

PER QUIRE, PER REAM.

2260.—Filtering Paper, letter A, laid, 19x22, .60, $7.00
2261.—Ditto, ditto, “« B, wove, 18x21, .50, 6.50
2262.—Ditto, ditto, “ (laid, 154x184,.40, . 4.50
2263.—Ditto, ditto, « D, wove, 16x19, .40, 4.55
2264.— Ditto, ditto, « Ey, wove, 15x194, .35, 4.00
2265.—Ditto, ditto, Swedish, genuine, having the water-mark J. 0.
Munktell, as recommended by Prof. Fresenius.
Per quire, $1.50 ]

2266.—Finger Tips, of rubber, to put on the fingers
when handling acids, iodine, ete. Each, .10
2267.—Fire Syringe, producing instantaneous light
by sudden condensation of air, of brass, 7 in. cylin-

der. $3.00

2268.—Ditto, ditto, of glass, with brass cap and piston.
2267
$8.00

2269.—Fire Clay. Per Ib. .05
2270.— Fittings, for evolution bottles. Each, .30
2271.—Ditto, for wash bottles. fhe A cae
2272.—Ditto, for Woolf’s bottles. $5. AB

Flameless Lamp. See Aphlogistic Lamp.
2273.—Flasks, assay, or parting, long-necked, of hard Bohemian
glass. Per doz., $1.50
2274.—Ditto, assay, conical, flat bottom, with pro-
jecting ring around them about two-thirds of
the way from the base to the top, to prevent
the tongs rom slipping when they are being
lifted, thoroughly annealed, of best Bohemian

glass. Each, .50 son
2275.—Ditto, ditto, best Bohemian glass, with lip,
without ring. Each, .50

2276.—Flasks, very best and genuine Bohemian, with vial mouth
and flat bo’ .om.

1 2 + 6 8 12 16 24. . 3202.
$1.20 1.30 1.60 2.25 2.50 3.00 3.25 3.75 5.50 per doz.

$ 1 2 3 gall.
4d $1.25 Let ci: 2.00 each.

2277.—Ditto, ditto, flat bottom, vial mouth, pear shape, for den-
tists, etc.; 2 gallons. Each, $2.50

93

2278 2279 2280 2281

2278.—Flasks, round bottom, vial mouth, pear shape.
3 8 16 32 OZ. + gall.
$3.00 4.00 6.00 10.50 per doz.

2279.—Ditto, ordinary flat bottom, with a ring around the neck to
bear corking.

1to2o0z 4 8 16 32 4 gall 2
ae Lee 20 25 3d “7d $2.00 each.
$1.20 1.50 2,00 250 3.450 750 20.00 per doz.

2280.—Ditto, best Bohemian glass, flat bottom, pear shane, with
ring around the neck.

4 8 16: 32 oz.
$2.50 3.25 4,25 6.50 per doz.

2281.—Ditto, round bottom, pear shape, with ring around the neck
to bear corking. Prices the same as the foregoing.
2282.—Ditto, Rose’s blow-pipe or “ Reagirkelchen,” of very small
size, pear shape, with flaring mouth, for use with the blow-pipe-
Per doz. .60
2283.—Ditto, small, blown before the lamp, of best hard German
glass, globular shape, light and thin glass, with flat bottoms,
suitable for specific gravity.

4 3 1 oz.
.60 Vd $1.00 per doz.
2284.—Ditto, best German “Florence,” vial mouth.
2 4 8 $G, 25524 32 oz.

$1.25 1.60 2.25 2.75 3.25 3.75 per doz.
2285.—Ditto, of best Bohemian, with a tubulature half-way up the

neck.
16 02. qts.
ve $1.00 each. |
2286.—Ditto, ditto, ditto, with tubulature on either side of the
bulb.
ees 1 gall.
$1.50 2.25 each.

2287 —Ditto, Bologna. 2 Per doz., $1.50

94 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

2288.—Flasks, copper. 1 qt., $3.00; 2 qts., $4.50 each.

2289.—Ditto, iron. : Each, $1.00

2290.—Ditto, gas, of best Bohemian glass, bottle shape, with ring
around the neck.

8 16 32 48 oz.
30 40 0 .60 each.
Ditto, litre. See Litre Flasks, or Bottles.

Ditto, oxygen. See Oxygen Retorts.
Float, Erdmann’s. See Burette Swimmer.
Florentine Receivers. See Receivers.
Forks, for gas burners. See Gas Burners.

MUA oe

LOM mmo

ANN

Tn

AUTON

1291 2293 2292 2294 2296 2298 2299 2301a 2300 2302
2291.—Forceps, brass, ordinary, plain. : Each, .50
2292 .—Ditto, ditto, stout. 6 io
2293.—Ditto, ditto, ends bent in parallel directions, with ivory
tips. Each, .75
2294.—Ditto, jewelers, polished steel, square taper jaws. “ .75
9295.—Ditto, ditto, heavier. $1.00
2296.— Ditto, ditto, unpolished, Stubb’s, extra strong, for holding
and crushing the button and minerals, in assay. Each, $1.25
2297.—Ditto, of polished steel, 7 inches long, and lined with cork.
Each, $1.00

2298.—Ditto, steel, ordinary, small. “OB
2299.—Ditto, ditto, form No. 1. “« 50
2300.— Ditto, ditto, form No. 2. “« 50
2301.—Ditto, ditto, form No. 3, German silver point. cB
2301.4—Ditto, steel, form No. 4, hardened rubber end. Bes ee

2302.—Ditto, ditto, form No. 5, German silver point. “ 1.00

OF CHEMICAL AND PHYSICAL APPARATUS. 95

2309 2311

2303 2306

2316

2303.—Foreeps, steel, platinum point, ordinary German form.
Each, $1.50

2304.—Ditto, ditto, ditto, German silver. fe Tap
2305.—Ditto, German silver, French shape, platinum ends. “ 2.00
2306.— Ditto, steel, with extra heavy platinum points. «2.50
2307.—Ditto, heavy brass, platinum ends. « 1.00
2308 .—Ditto, wire, platinum points. Ge
2309.—Ditto, for breaking glass, heavy, of steel. $e: Ae
2310.—Ditto, for bending wire, round ends, Stubb’s. £6, Ae
2311.—Ditto, for cutting wire. ©. 42695
2312.—Ditto, brass, with spring. fe TS
Fossils. See Minerals and Fossils.

» 2313.—Fountain in vacuo. — 9.00
2314.—Formation of Water, apparatus for, produced by the
combustion of hydrogen under a bell jar. $2.50

Fractional Distillation. See Distillation, Michro-Chem-

ical Retorts, Flasks, ete.
2315.—Frames, for the charts and photographs mentioned in
this catalogue, according to the styles required.
2516.—Freezing in vacuo, Leslie’s apparatus. $3.00 to 6.00

oc

Meso ait
o~-
5

96 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

LN

2317 2319

2317.—Funnels, American glass.
2 O4. 4 8 16 32 % gall. 1 gall.
10 1b. IBS abn ve BD as" “75 each.
2318.—Funnels, best Bohemian glass, formed to an angle of 60°
all the edges ground evenly.
13 2 24 3. BF 4 44 5 6 in.
BO SS ee 22... 28. 80 - 36° 44 .60 each.
2319.—Ditto, ditto, formed especially after a pattern, with bottom
of a cone formed to a true angle of 60°, and having a stem
with parallel sides, made expressly for Bunsen’s quick filtering

apparatus.
2 24 3 4 5 in.
20 25 30 AO .50 each.
2320.—Ditto, ditto, fluted or ribbed, best imported ground tops.
2 3 4 5 in.
20 30 A0 .OO each.
2321.—Ditto, German glass, small, in nests of 3, largest 1 inch
across the top. | Per nest, .25
2322.—Ditto, ditto, angle 60°, tops unground.
2 3 4 o 6 in.
12 15 20 25 30 each.
$1.00 1.20 2.00 2.50 3.50 per doz.
2323.—Ditto, glass, long, bent stem, for filling retorts.
2 4 1 18 24 02.
23d A0 0 65 .80 each.

2324.—Ditto, separatory, of best Bohemian glass, conical, formed
to an angle of 60°, with stopcock ground into the neck.

4 6 8 in.
$2.50 3.25 ; 4.50 each.

:

2325 2326. 2329 2331 2334 2335

2325.—Funnels, separatory, globe shape, stoppered.
1 qt. 2 qts.
$3.50 4.50 each.

2326. —Ditto, ditto, globe shape, stoppered, small, with ¥

funnel tube for separation and use in volumetric an- 7?

alysis. | Each, $1.25:
2327.—Ditto, ditto, ditto, hemispherical, of light blown glass.

Kach, $1.00

2328.—Ditto, ditto, conical, formed on an angle of 60°, stout Bohe-

mian glass. Hach, $1.50:
2329.—Ditto, tubes, glass, with Sa Rones between the cone and
the tube. Each, $1.00:
2330.—Ditto, ditto, glass, with plug stopper ground into the neck.
of the funnel. | Kach, $1.00
2331.—Ditto, ditto, ordinary, conical, stout glass, length of eh
18 20 24 in.
15 20 25 each.
2332.— Ditto, ditto, conical, of light blown glass.
12 16 18 in.
25 30 35 each.
2333.—Ditto, ditto, thistle top.
12 18 in.
18, 25 each.
2334.—Ditto, ditto, thistle top, bulb double the size of the
above, tube 18 in. long. Each, .30
2335.—Ditto, ditto, Welter’s safety thistle top, one bulb.

Each, .30 2336
2386.—Ditto, ditto, ditto, 2 bulbs, 30 inches. Each, .40

98 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

2337.—Funnels, tubes, Welter’s, 3 bulbs. Each, .50
2338.—Ditto, ditto, ditto, conical top, 1 bulb. “AO
2339.—Ditto, ditto, ditto. «= “ De Ks «Bn
2340.— Ditto, ditto, ditto, ce See “ 60

2341.—Ditto, ditto, ditto, short stem, thistle top, 2 and 3 bulbs.
Each, .d
| \

!

0

~

rT i

?

2342 2343 2346

2342.—Ditto, ditto, Mitscherlich’s form, of 2 limbs and safety bulb,

and thistle top funnel in the center. Each, .50
2343.—Ditto, ditto, glass, Filling. an
2344.—Ditto, porcelain, safety, with bulb at the base of the cone.

Each, 75
2345.—Ditto, ditto, conical, with loop handle at the side.
3 4 Ad 54 6 in.

a. Od 10 90 $1.00 each.
2346.—Ditto, ditto, filtering, with staves inside.

3 33 43 dF 6 in.

60 - 70 $1.00 1.40 1.70 each.
2347.—Ditto, ditto, percolating. Each, $3.50
2348.—Ditto, ditto, perforated, without stem.

3 34 4 44 st 6 in.

AO 50 .60 70 $1.25 1.50 each.
2349, ditto, ditto, with large holes to support cloth filters.
34 44 5 54 64 %4 in.

10) Od 80 1.00 1.50 1.75 each.

2350.—Ditto, ditto, German, with handle. Each, .25

OF CHEMICAL AND PHYSICAL APPARATUS. . 99

2351.—Funnels, gutta percha, conical.

3g 44 43 54 7 Yd in.
60 75 $1.00 1.50 1.75 2.00 each.
2352.—Ditto, ditto, spherical, $ gallon. Each, $5.00
Ditto, for hot filtration. See Filters.
Funnel Supports. See Supports.
FURNACES.
2353.—-Furnace gas, Erdmann’s, of fire clay, with tripod stand,
without burner. : td

2354.—Ditto, porcelain, to surround Bunsen’s burner 1.00
2355.—Ditto, sheet iron, having 7 concentric rings on the top,

mounted on three legs. . $4.50
2356.—Ditto, with large Rose’s burner. 10.00

The above apparatus is found very useful by apothecaries and
in small laboratories for evaporations, hot mixtures, etc.
Furnaces, for gas, small. See Stoves.
Ditto, for kerosene. See Stoves.
2357 .—Ditto, French, hand, clay. Each, $2.50 to 10.00
2358.—Ditto, Kent’s, portable, sheet iron, small size, 17 in. high,
of strong plate iron, lined with fire clay; it has six doors, the
dome being hinged, that it may be more easily placed off or on;
the openings are conveniently arranged for the reception of
porcelain tubes; has a sand bath, water bath, a set of concentric
rings, to receive a vessel as small as 3} inches in diameter.

- Each, $25.00
2359.—Ditto, Chamott. 66 3.00
2360.—Ditto, cupelling, French, of refractory clay, bound with

iron bands; it is composed of three parts. without the dome,

|

100 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

with scorifying, cupel and tube openings, and stop doors for the
same, complete.

Nos. 1 2 3 4
$15.00 20.00 25.00 35.00 each.

'

wa

SoS OSS

*

( |
“TAN

tin. ;
iin

\

i

SS a

ae

| S me

,
2361.—Ditto, Hibb’s patent, of heavy cast-iron, lined with fire clay,
with arrangements for the cupel muffle to extend through the
center of the furnace, so the fire may extend all around it;
has separate opening for tubes and retorts; it is supplied
with water bath, sand bath, concentric rings, ete. A very
highly esteemed and convenient furnace, as it may be used
both for assay and heating purposes, and the muffle may be
withdrawn at any time for examination. $50.00
2362.—Ditto, Perrot’s gas blast of sheet iron, with a thick lining cf
fire clay, as per sectional illustration. The blast is received
underneath, and gas supplied to nine large Bunsen’s burners,
haying the jets thrown to a common center; the supply of

s Peet

OF OHEMICAL AND PHYSICAL APPARATUS. 101

gas is regulated by a hand crank. When in operation, the con-
centrated flame is forced up through an opening at the bottom
of the furnace, and completely surrounds the crucible resting
on a pestle of fire clay, enclosed in an inner wall of the same
material, which soon becomes superheated to such an extent
that five pounds of gold may be melted in the short space of
eight minutes. This valuable furnace is also used by enamelers,
jewelers, dentists, etc. .

Nos. 1 9,
$40.00 60.00 each.

2364 2365
2363.—Ditto, No. 0, melting 500 grammes of copper at one time.
$35.00
2364.—Ditto, a new French crown, for gas, composed of a large
number of jets on a circular support, and surrounded by an
iron frame, which reflects the heat, and at the same time sup-
ports the vessel to be heated. It is very highly esteemed by all
the manufacturers that have used it.

Nos. 1 2 3
$8.00 10.00 12.50 each.

2365.—Ditto, gas, Griffin’s, for chemical operations at a white
heat; it is 2 feet high and 8 in. wide, consisting of a brass

102 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

cylinder open at the bottom, at the top of which are 16 Bunsen’s
burners fixed, having a gas supply pipe regulated by stopcock.
It rests on an iron stool, to which the chimney is attached by
means of braces. The furnace itself is a cylinder of fire clay
resting on a fire clay sole plate, which is pierced to receive the
fire from the burner; it measures 6 inches in height, 8 ifches
outside diameter, and 5 inch bore. The crucible to be heated
is supported on a perforated plumbago cylinder, and reaches
within about an inch of the face of the gas burner. The dome,
or roof of the furnace is carefully constructed so as to have a
good draft; the consumption of gas when at work is 33 cubic
feet an hour. $20.00

Se ira

—~ iy

2368

2366.—Furnace and Lead Basin, for etching, with hydrofluoric
acid on glass. $12.00

2367.—Ditto, enamelers, of French refractory clay, with large
opening, for the use of enamelers, dentists, etc., in two parts,
grates and stops for openings.

Nos. 1 2
$20.00 25.00 each.

2368.—Ditto, Chilton’s universal, of heavy sheet iron, lined with
fire brick, having moveable grate and ash box; it is so arranged

OF CHEMICAL AND PHYSICAL APPARATUS. 103

that the pipe above the furnace slides up and down so as to
permit the top to be removed, and the deep iron sand bath
accompanying the frrnace, to be put in the place of it. A set
of cast iron rings accompanies the furnace, and the doors are
ar suitably stopped. It is a very convenient furnace for all the
: purposes of a laboratory, such as melting, distilling, evapor-
ating, cupelling, ete. $40.00

a
“es

t ha 4

’ 2369 2372
; 2369.—Ditto, or oven, Carius’s, for heating substances, in sealed
glass tubes. $12.00
2370.—Ditto, ditto, with Kemp’s gas regulator, two thermometers
and Bunsen’s burner. $22.00
2371.—Ditto, Erlenmeyer, tor two tubes. 7.50
2372.--Ditto, ditto, for four tubes. | 9.00
2373.—Ditto, two thermometers, 1 gas burner, 1 gas regulator,
extra. . $10.00
2374.—Glass Tubes for ditto, heavy, strong, hard glass. 1.00

| 2375 7
2375.—Furnace Combustion, Bunsen’s, improved, 25 burners,
with stems, to turn on or off gas instantaneously. $60.00

Ditto, ditto. See also Combustion Furnaces. .
2376.—Galactometer, consisting of a wooden standard, graduated
with a tube attached to the same to receive the milk: $3.00

106 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

Gas Furnaces. See Furnaces.
2396.—Gas Generator, Kipp’s, for sulphuretted Aydrostty. ordi-
nary form, with safety tube in top. $6.00

2396 2397

2397.— Ditto, ditto, Bohemian, with double concentric and inner
stoppers. | $7.50
2398.—-Ditto, ditto, small, with safety funnel in top. 3.00
2399.—Ditto, ditto, for hydrogen, of copper, brazed, to hold 15
gallons. Price, including bell and fittings, $35.00

This is a first class apparatus, and will give an abundant
supply for a large laboratory.

2400.— Ditto, ditto, sulphuretted hydrogen, Babo’s, consisting of two

bulbs, with open mouth, united by a semi-circular tube, for the

prompt supply of gas in small quantities. Price, mounted, $2.50,

The bulb, on therignt of the illustration, is half filled with lumps of
sulphide of iron; the other bulb is partly filled with diluted sulphurie acid;
the apparatus being placed on the support, revolves on the center, and can
be.fixed by the thumb-screw in any required position; when the bulb con-
taining the sulphide of iron is raised above the other bulb, the acid is thrown
back into the right bulb, and its action on the sulphide of iron ceases; other-
wise, when this bulb is placed below, the sulphuric acid flows upon the
sulphide of iron, and a continuous current of sulphuretted hydrogen gas
passes off by the bent, glass tube, into the washing flask, and thence
outward. When thé apparatus is not in use, it is simply necessary to elevate
the bulb containing the snlphide of iron and close th» pincheock on the
flexible tube.

‘
re

ae
Se De ee eb

ee

(

OF CHEMICAL AND PHYSICAL APPARATUS. 107

2400 2402

2401.—Price of the glass part of the above apparatus, without
wash bottle. Per doz., $12.00
2402.—Gas Generators, hydrogen, of glass. Each, 5.00

2403.—Ditto, ditto, of extra heavy, french crystal glass jar, con-
taining bell shape gas holder, leaden tripod, stopcock, and
gallow-screw connector.

Height, 9 103 1383 16° 19 in.
$10.00 12.00 15.00 20.00 25.00 each.\

2404.—Ditto, for sulphure¢ted hydrogen, oX.

by the employment of asbestos. $1.00
2405.—Ditto, ditto, for Oxygen, of copper,
double bottom, and iron top, carefully 2401
secured. 1 qt., $4.50 + gall., 6.00 each.
~ Gas Globes. See Deflagrating Globes.

2406.—Gas Holders, Pepys’, made of ja-
‘panned zinc, and having a glass tube on
the side to indicate the quantity of gas

in the gas holder.

=

10 galls. - 15 galls.
$20,00 25,00 each.
2407.— Ditto, ditto, of copper.
10 galls. 15 galls.
$27.50 37.50 each. 2405

2408.—Ditto, ditto, for oxygen and hydrogen, containing 15 gallons
of very heavy jJapanned zinc, with bells, complete. $70.00

108 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

i vo i me (tu i

2409
2409.—Gas Holders, for oxygen and hydrogen, 23 gallons, new
arrangement for holding the bells always in perpendicular posi-
tion, mounted on castors, and having weights enclosed in a
frame. | $100.00
Gas Jars. See Bell Jars, Bell Glasses, etc.

2410.—Gasometer, Bunsen’s mercurial, graduated to millimeters.
$2.75

2411.—Gas Meter, large, with exposed indices, covered with glass,
stopcock, pressure indicator, regulator, and delivery jet. $50.00

2412.—Gas Regulation Burner. $ 5.00
2413.—Gas Regulator, Kemp’s, improved by Bunsen.
$3.0¥
2424.—Gas Pistols, japanned tin. 50
2415.—Gas Pipettes, Ettling’s, of glass. 2.00
Other Gas Apparatus. See Gas Analysis.
2416.—Gas Tubes, plain, small, 6 inches in length.

Per doz., $2.00
2417.—Ditto, Bunsen’s. : 24°5
3) QO tnt 50 in 4 100 in 3 200 in 1
$1.25 1.75 2.00 2.50 each.

‘eS

OF CHEMICAL AND PHYSICAL APPARATUS. 109

(i) LU

ly j

:

2410 2419 2420
2418.—Gas Tubes, Bunsen’s, 5 cubic inches in 10. Each, $1.75

2419.—Gas Washing Apparatus, consisting of two porcelain
dishes, fitting the one into the other, with concentric shoulders.
| $5.00

2420.—Gasogenes, French, cane covered, for two bottles.
Each, $7.50

2421.—Gauge Tubes, for steam boilers. Per lb. 1.00
2422.—Gauze, of brass wire netting, 5, 10, 20, 40, 60, 80, and

100 meshes. Per square foot, .60 to .90
2423, —Ditto, of copper. << 85

2424.—Ditto, of iron. ‘ 30 to .40
Geissler Tubes. See Electric Tubes. |
2425.—Glass Blowers’ Table, with sheet iron top, drawers,

double bellows, and brass discharge pipe. $40.00
2426.—Ditto, ditto, of wood. with double bellows. 15.00
2427.—Glass Plates, colored, for examination of colored flames,
assorted. 3x3 3x4 4x4 in.

10 15 .20 each.
2428.—Ditto, of fine French mirror glass, $ inch thick.

3 4 6 8 9 10 12 in.
25 BD 60 $1.00 125° 1.50 2.25 each.

2429.—Ditto, ditto, ground on both sides, 1 inch thick.

6 7 8 12 in.
$2.00 2.25 2.75 8.50 each.

See also Covers, glass.
2430.—Glass Ends, for burettes, drawn. Each, .05

110 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

2431.—Glass Pieces, small broken pieces. Per Ib., .25
2432.—Glass Rods, assorted sizes and qualities. — 60 to .75

Glass Tubing. See Tubing.
2433.—Glass Shades, furnished to order.
2434.—Ditto, feet, to ditto. Hach, .40 to $4.00
2435.—Gloves, india rubber, of best manufacture, without seam,
for handling acids and acidulous preparations. Per pair, $5.00
See also Finger 'Tips.
2436.—Goniometers, Hauys’, for measuring the angles of crys-

tals, in morocco case. Each, $10.00
2437.—Ditto, Wollaston’s, reflecting. $ 30.00
2438.—Ditto, German, reflecting, with eye lenses to read the gradu-
ations. A very fine and accurate instrument. Each, $50.00

2439.—Graduate Glasses, for test purposes, not engraved, with
glass foot.
4 1 2 4 8 16 32 02.
a2. ie 20. Af) > 50 75 each.

2440.—Graduates, registered minims, Ger- ((
man, vase form.
60 120 minims.
O00 .75 each.
2441.—Ditto, English form, glass foot.
60 120 minims.

DO .75 each.

OF CHEMICAL AND PHYSICAL APPARATUS. 111

2442.—(Graduates, registered, English shape.
eh 2 4 8 16 B2 OZ.
2D 30 Ad .60 $1.00 1.50 each.

NT

DN i

2445 2446 2447 2448 2449

9443.—Ditto, ditto, tumbler shape.

4 1 2 4 6 8 16 32 OZ.
ae 40 00 .65 20 20 = $1.50 2.00 each.

2444.—Ditto, ditto, French, carefully and accurately graduated.

8 12 16 32 OZ.
$1.00 1.25 1.75 2.25 each.
2445.—Ditto, porcelain. 8 16 oz.
$1.00 . 1.50 each.

Grain and Gramme Weights. See Weights.

2446.—Hammers, blow-pipe, Plattner’s, usual form, square head,
Nos. 2 and 3. Each, .75
2447 .—Ditto, ditto, Freiberg style, octagonal, Nos. 1 and 4. “ $1.00
2448.—Ditto, mineralogical, pointed at both heads, for trimming,
No. 5. ) ; Each, $1.00
2449.—Ditto, ditto, one end pointed and the other flattened, No. 6.
Each, $1.25

2450.—Ditto, for watchmakers, small and round head. “ 1.00
2451.—Ditto, geological, one head flattened and the other pointed,
for breaking ores. Each, $1.75
2452.—Ditto, ditto, extra large and heavy, for field work.“ — 2.00
2453.—Ditto, ditto, and polished, for use with two hands (small

sledge). Each, $2.50
2454.—Handles, of wood, for files, hammers, etc. “ 06 to .50
2505.—Hand-bladder Glasses. - Each, .75 to $1.00

Hardness of Minerals, tests for. See Minerals.

™
:
-

112

et
}

2455 2457
Hessian Crucibles. See Crucibles.
Heat Apparatus. See collection at the latter part of
this book.
Hoffmann’s Ditto, collection of. See the list of the same
at the back of this book.
2456.—Holders, for caustic, ivory, with silver ends. Each, $4.00
2457.—Ditto, for platinum spoons and wire. is .60
Ditto, for burettes, supports, test tubes, etc. See Supports,
Test Tubes, etc.
2458.—Holsterigue Barometer, with thermometer, accurately
adjusted, fine polished brass mounting, in velvet-lined morocco
case. Each, $35.00
Hot Water Funnel. See Funnels.
2459.—Hydroclese, or metallic syringe, French, in velvet-lined,
mahogany cases. For maies, $4.00
The chief merit of this clyso-pump is, that a piston is dispensed with, the
liquid drawn acting in this capacity. Its construction is based on the
simplest laws of Hydraulics, and is purely metallic. It can be employed
advantageously for all kinds of injections, and, by increasing its volume, acts
as a medicinal douche.

2460.—Ditto, ditto, ditto. For females, $5.00
Hydrogen Generator and Pistols. See Gas.
_ Hydraulics and Hydrostatices. See collection at the
close of this book.

Petras PRAY FH gt ENR OE ase yA ase, Mirek ace Lora cia
eRe eee RE Is Pare got ni SRE Ce eh ee
peel Tae Nata Vee ove GP geaitiog earth era
os ai
é

ra is

OF CHEMICAL AND PHYSICAL APPARATUS. “1s
HYDROMETRY.
2461.—Hydrometers, for Acids and aceteous fermentations,

Balling’s. Each, $1.25
2462 .—Ditto, Otto’s, 0 to 12, in fourths. Oe ae
2463.—Ditto, for Acids, Beaume’s, 0 to 70, in fourths, in pasteboard

cases. Each, .75

2464.—Ditto, ditto, ditto, for liquids heavier than water, Beaume’s
scale, graduated about 70.

in 1 4 4
7d .80 .85 each.
2465.—Ditto, for Alkali, or fluids lighter than water, Beaume’s
scale. Each, .75
2466.—Ditto, for ditto, in pasteboard cases, in 1. alt
2467.—Ditto, ditto, ditto, in tin cases, No. 204. 2 460
2468.—Ditto, ditto, ditto. COO RG

2469.—Ditto, for Acid, in chamois-lined leather cases, with ther-
mometer and glass jar complete.

No. 995 996 997
$4.00 4.50 5.00 each.

Ditto, for alcohol. See Alcoholometers.
2470.—Ditto, Manual containing tables for alcoholometers, Pyle’s.
Each, .50

2471.—Ditto, empty cases for Hydrometers. be RG
2472.—Ditto, for Bark, in pasteboard cases. “ 1,00
2473.—Ditto, Beer and Wort, Balling’s, in pasteboard cases.“ 1.00
2474.—Ditto, ditto, with thermometer, in ‘<6 “« «© 9009
2475.—Ditto, for Brine, pasteboard cases. “ 1.00
E 2476.—Ditto, for Coal oil, 30 to 50. BF ee
: 2478.—Ditto, Densimeter. “ 100
Cy 2479.—Ditto, Ether, Beaume’s scale. eo Es
4 2480.— Ditto, ditto, pese, French, No. 2585. “ 1.00
a 2481.—Ditto, for Fluids heavier than water,-0 to 70. Each, .75
c 2482.—Ditto, ditto ditto, with thermometer and specific gravity
a: scale, 1000 to 2000. Each, $2.00
i - 2483.—Ditto, for Fluids lighter than water, 10 to 40. "5
BE 2484.—Ditto, ditto, ditto, with thermometer and specific gravity

scale, 700 to 1000. Each, $1.50

114 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE .

2485.—Hydrometers, for petroleum, ete. Each, $2.00
2486.—Ditto, for Milk, ordinary style. a 50°
2487.-—Ditto, ditto, 0 to 25. «6 15

2488.—Ditto, Milk Essayers, Chevalier, jar and therm’r, “ —- 1.50
2489.—Ditto, ditto, Quevenne, with jar and thermom’r, “ 1.00
2490.—Ditto, for Most and Wine; French, in tin cases. “ 1.50

2491.—Ditto, ditto, Oechsle’s. $1) 5 5G
2492.—Ditto, for rich Oils, French, Lefebre, with thermometer in

3 pasteboard cases. Each, $2.00
2493.—Ditto, ditto, ditto, 22 to 50. «6 2.00
‘2494,—Ditto, for Salt. &6 75
2495.—Ditto, Saccharometers, French, for testing syrup, in
pasteboard cases. Each, .75
'2496.—Ditto, ditto, Beaume’s, for Syrups and Sugar. CG
'2497.—Ditto, ditto, Balling’s, for “ se “ $1.00
2498.—Ditto, ditto, with thermometer enclosed. i B00

2499.—Ditto, ditto, thermometer and Specific gravity scale extra.
7 Each, $2.50
2500.—Ditto, ditto, for testing Sugar and.Syrups, according to Dr.
Scheibler. In chamois-lined morocco case, with three spindles,
and cylinder. Hach, $15.00
2501.—Ditto, ditto, for Shellac, one spindle, in pastebo’rd cases. 1.00
2502.—Ditto, ditto, Universal, for Specific Gravity, ‘one spindle
registering 700 to 2000, for fluids heavier or lighter than water,

in pasteboard box. Each, $2.00
2503.— Ditto, ditto, two spindles, 700 to 1000 and 1000 to 2000, in
pasteboard boxes. Per set, $3.00

9504.—Ditto, ditto, single spindles, in pasteboard boxes.

700 to 850 1000 to 1200 1400 to 1600
700 to 1000 1000 to 1400 1400 to 2000
750 to 1000 1000 to 2000 1800 to 2000 -

850 to 1000 1200 to 1400 Each, $1.50 >

2505.—Ditto, ditto, sets, Specific gravity, from 700 to 2000, finely
and accurately divided, in light glass jars, swelled top, with
wooden feet. Per set, $3.50
2506.—Jars alone, for the above. Each, .50
2507.—Ditto, for Specific Gravity, single spindle, 1000 to 2000,
with thermometer and fine glass jar, in chamois-lined leather
cases. Each, $5.00

e511 2524 2525
2508.—Hydrometers, for Specific Gravity, two spindles.
: Each, $6.50
2509.—Ditto, ditto, ditto, in fine chamois-lined mahogany cases.

with thermometer and glass cylinder. Each, $9.75
2510.— Ditto, ditto, three spindles. , LEO
2511.—Ditto, ditto, s1x ¥ ‘6 14.00
9512.—Ditto, ditto, seven “ ‘“c 16.00

2513.—Ditto, Twaddle’s, in sets of six spindles.
No.1, Odeg.to 24 deg., specific gravity, 1000 to 1120

No. 2, 24 “ to 48 1120 to 1240

No. 3, 48 “ to 75 $ . 1240 to 1370

No.4, 74 “ to 102 « es : 1370 to 1510

No. 5, 102 “ to: 188. “ e aa 1510 to 1690

No: 6,138". to 130. * . “ 1690 to 2000
The entire set of six, with spherical bulb. Each, $6.00
2514.—Ditto, sets of six, with cylindrical bulb. ao 5.00
2515.—Ditto, single spindles. . . 1.25
2516.—Ditto, sets of five spindles, in black walnut box. “ 5.50
9517.— Ditto, for Urine, French. “Each, .50
2518.—Ditto, ditto, with one spindle, of fine graduation, indicating
from 1000 to 1040, with solution tube. Kach, $2.00
2519.—Ditto, Solution tubes, extra. « 28
~ 2520.— Ditto, for Vinegar. s¢ V5
2521.-—Ditto, Jars, with brass foot. Each, $1.50

Ditto, Jars, with glass foot. See Jars.
2522.—_Hydrometers, Nicolson’s, of japanned tin, for ascertain-
ing the specific gravity of minerals, etc. Each, $2.00
2523.—Ditto, ditto, with a set of decimal weights. “6 4.00

_— 2524.—Ditto, ditto, brass, finely adjusted with a set of weights, all

in case, without jar, complete. Each, $6.00

2 2. es 6 teh ae tity oe eR ARS es ee” a Pee eee. Nar ee Ae eee Cte aed ot ah a SR sa ee ge te y Sa Se aay
LO de 3 CER SET NORE GQ ate, CAN OEIC SPRUE ert nea Suey aa ten cane SE eke Oe
- 4.1 ¥e3"¥ : ; € i a Bees £7
AER 9 : AEE S ; FEA PE nas cae ONAL re ee 4

eee)
re So eee
Kain on oe pol "

: Peta pe

114 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE |

2485.—Hydrometers, for petroleum, ete. Each, $2.00
2486.—Ditto, for Milk, ordinary style. a 50°
2487.-—Ditto, ditto, 0 to 25. €é 15

2488.—Ditto, Milk Essayers, Chevalier, jar and therm’r, “ 1.50
2489.—Ditto, ditto, Quevenne, with jar and thermom’r, “ 1.00
2490.—Ditto, for Most and Wine; French, in tin cases. “ 1.50

2491.—Ditto, ditto, Oechsle’s. ie
2492.—Ditto, for rich Oils, French, Lefebre, with thermometer in

| pasteboard cases. Each, $2.00
‘2493 .—Ditto, ditto, ditto, 22 to 50. a 2.00
‘2494.—Ditto, for Salt. 15
2495.—Ditto, Saccharometers, French, for testing syrup, in
pasteboard cases. Hach, .75
'2496.— Ditto, ditto, Beaume’s, for Syrups and Sugar. « 75
:2497.—Ditto, ditto, Balling’s, for “ Ks “< $1.00
2498 .—Ditto, ditto, with thermometer enclosed. B00

2499.—Ditto, ditto, thermometer and Specific gravity scale extra.
| Each, $2.50
2500.—Ditto, ditto, for testing Sugar and.Syrups, according to Dr.
Scheibler. In chamois-lined morocco case, with three spindles,
and cylinder. Each, $15.00
2501.—Ditto, ditto, for Shellac, one spindle, in pastebo’rd cases. 1.00
2502.—Ditto, ditto, Universal, for Specific Gravity, ‘one spindle
registering 700 to 2000, for fluids heavier or lighter than water,

in pasteboard box. Each, $2.00
2503.—Ditto, ditto, two spindles, 700 to 1000 and 1000 to 2000, in
pasteboard boxes. Per set, $3.00

9504.—Ditto, ditto, single spindles, in pasteboard boxes.

700 to 850 1000 to 1200 1400 to 1600

700 to 1000 1000 to 1400 1400 to 2000

750 to 1000 1000 to 2000 1800 to 2000 .

850 to 1000 1200 to 1400 Each, $1.50 ©

2h05.—Ditto, ditto, sets, Specific gravity, from 700 to 2000, finely
and accurately divided, in light glass jars, swelled top, with
wooden feet. Per set, $3.50
2506.—Jars alone, for the above. Each, .50
2507.—Ditto, for Specific Gravity, single spindle, 1000 to 2000,
with thermometer and fine glass jar, in chamois-lined leather
cases. Each, $5.00

OF CHEMICAL AND PHYSICAL APPARATUS. 115

ag

--}
3
fal
i
|
if
¥
2
oI

ye
a:

= 2524 2526
2508.—Hydrometers, for Specific Gravity, two spindles.
Each, $6.50
2509.—Ditto, ditto, ditto, in fine chamois-lined mahogany cases.

with thermometer and glass cylinder. Each, $9.75
2510.—Ditto, ditto, three spindles. | > 44-66
9511.—Ditto, ditto, six " é 14.00
-2512.—Ditto, ditto, seven “ ‘“c 16.00

2513.—Ditto, Twaddle’s, in sets of six spindles.
No.1, Odeg.to 24 deg., specific gravity, 1000 to 1120

No. 2, 24 “ to 48 1120 to 1240

No.3, 48“ to 7% « « « 1240 to 1370

NO: 4: 74% ta1Q2. i as 1370 to 1510

No.5, 102 “ to138 “ “ —§* — 1510 to 1690

No. 6, 1388 “ to 180 “ <7 = 1690 to 2000
The entire set of six, with spherical bulb. Each, $6.00
2514.—Ditto, sets of six, with cylindrical bulb. Ae 2 0D
2515.—Ditto, single spindles. a 1.25
2516.—Ditto, sets of five spindles, in black walnut box. “ 5.50
2517.—Ditto, for Urine, French. “Each, .50
2518.—Ditto, ditto, with one spindle, of fine graduation, indicating
from 1000 to 1040, with solution tube. Each, $2.00
2519.—Ditto, Solution tubes, extra. fs 125
~ 2520.— Ditto, for Vinegar. ae 5
2521.-—Ditto, Jars, with brass foot. Each, $1.50

Ditto, Jars, with glass foot. See Jars.
2522.—Hydrometers, Nicolson’s, of japanned tin, for ascertain-
ing the specific gravity of minerals, etc. Each, $2.00
2523.—Ditto, ditto, with a set of decimal weights. 66 4.00

2524.—Ditto, ditto, brass, finely adjusted with a set of weights, all

in case, without jar, complete. Each, $6.00

116 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

Hydrogen Lamps. See Doebereiner’s Lamp.
2525.—Hygrometers, Daniels’ on polished stand and gilt marks.
Each, $9.00

2526.—Ditto, Mason’s, on boxwood stand. “« 450
2527.—Ditto, Saussure’s, hair, mahogany stand. “ 4.00
2528.—Ditto, ditto, on brass stand. $8.00 to 12.00
2529.—Ditto, August Psychrometer, two thermometers, wet and

dry bulb, and fine divisions. Each, $12.00

2534 2539
2530.—Ice Freezer, Carré’s apparatus, importea only to order.
$150.00

It consists of a generatore and receiver, made of iron boiler-plate, the
receiver being conical in shape, both connected by means of a strong iron
tube. In the generator is placed a strong solution of ammonia saturated at
0°, and this is heated over a large gas flame, the receiver meanwhile being
immersed in the water. The liquified ammonia passes again into the gaseous
state, and is re-absorbed by the water in the generator. But in this evapora-
tion, great,cold is produced, and the vessel of water is soon frozen. The am-
monia going over can be used indefinitely.

2531.—Ditto, Hoffman’s apparatus, in glass, showing the principle

of Carré’s ice freezer. $15.00
2532.—Ivory Scale, Harcourt’s, for measuring the button in

assay, very accurate, made speciallv to order for me. $5.00 -
2533.—Ignition Tubes. Per doz. $2.50:
2534.—Indicator of Fire Damp, Electric. : 760

The large cup is filled with porous plaster of Paris, and is connected with
the bulb-tube opposite to it (which contains a small quantity of mercury), by
means of a brass tube. The top of the bulb has a screw cap to hold one of the
electrodes. The other electrode is screwed to the base, and connects with
large cup; when the porous cup absorbs the fire-damp gas, the mercury
presses on the narrow tube, making connection with upper cup, comple-
ting the circuit, and ringing the bell.

OF CHEMICAL AND PHYSICAL APPARATUS. 117

Infusion Jars. See Jars.
Ingot Moulds. See Moulds.

2535.—iron Ladle, used in assay, 3 in. AO
2536.—Jars, Battery, glass, cylindrical shape and flat bottom.
4x4 Axd 44x54 4x6 44x6 5$x8 in.
A0 45 00 ad .60 .75 each.
7x8 6x9 8x12 9x124 9x15 in.
80 8d $2.00 2.00 3.00 each.
2537.—Ditto, ditto, fluted, for bichromate potash solution.
Pints, .20 quarts, .50 each.
9538.—Ditto, cold cream, French, smooth, rounding and highly
glazed inside. $ 1 2 O24.
75 85 $1.00 dozen,

Ditto, chloride of calcium. See Chloride of Calcium.

2542

2544

2539.—Ditto, conserve, with cut-glass .covers, and two rings, made
of the finest French Baccharat cut crystal. It is the finest
quality of glassware in the world, bought by me directly
from the factory, and suitable for showing specimens, etc., in
show-windows, counters, etc.
Height under the cover, 14 16 182 in.
$7.50 10.00 15.00 each.
2540.—Ditto, ordinary, French, pure white crystal ; sides perfectly
parallel ; single and double rings.

Measure under cover, 27 c. C. 32 to 33 C. Cc.
$2.00 ‘- 3.50 each.
Ditto, Decanting. See Decanting
2541.—Ditto, hydrometer, French, swelled top, polished box-wood
feet. Each, .50
2542.-—Ditto, ditto, heavy swelled top, with glass feet.

Height, 16 18 24 in.
75 $1.00 1.24 each.

118 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

2543.—Ditto, ditto, with glass foot and ring around the neck,
ground top to receive glass plate.

5x14 6x12 8x12 10x2 =103x13 =. 114x123 in.
00

30 3d 40 45 od each.
124x13 13x2 ~ 15x2 18x24 20x24 25x3 in.
.60 65 70 5 .80 $2.00 each,

2544.—Ditto. ditto, lipped.
5x2 6x14 74x18 8x14 10x2 = 114x24 in.
30 23d 7 40 A5 .00 each.

18x2 15x} 15x2 204x1 5x3 in.
0k ee Se 15 $2.00 each.

Intermediate sizes of the above jars will be in proportion.
2545.—Ditto, Infusion.

Pints, $1.50 quarts, 2.00 each.
2546.—Ditto, Leech.
Quarts, .50 galls., $2.50 each.

2547.—Ditto, Leyden.
$ pt. 1 qt. $ gall. 1 gall. 2-galls.
$1.25 1.50 2.00 8.25 4.00 each.
2548.—Ditto, Mercury, glass. Each, $1.00 to 1.50
2549.— Ditto, ditto, or Powder, cylindrical, of porcelain, about 4
inches high and 24 inches diameter, with small opening at the
top. 3g beg Each, $1.75
2550.— Ditto, specie, ground tops, if desired.
¥ pt. 1 pt. 1qt. + gall. 1 gall. 2 gall.
15 18 25 35 50 $1.00 each.
2551.—Ditto, ditto, fluted sides.
Pints, .30 quarts, .50
2552.—Ditto, ointment, glass, flat shape, swelled tops.

‘ 1 02., $1.50 2 02., 2.00 per doz.
2553,—Ditto, ditto, porcelain, glazed, flat covers. ii

8 02. 16 02. 1 qt. |
.60 1D $1.25 each. 2554
2554.—Ditto, ditto, fine French choice porcelain, with fire-gilt
bands. 1 02z., $3.50 4 oz., 4.00 per doz.
2555.—Ditto, ditto, white porcelain, conical cover, knobbed.
8 16 32 02.
75 $1.00 1.25 each.

2556.—Ditto, ditto, French, labelled, 17 c.c. high. | Each, $1.30

oa.
ek
Se ae

oa

all

2597 2063 2564 2565, ’66

2557.—Jars, ditto, round, with conical top, knobbed, tall shape,
of the very best translucent and highly glazed china porcelain,
with fire-gilt decorations, and labelled.

A4x23 44x34 4x44 83x44 6x34 63x43 in.
$1.50 1.75 2.20 2.90 2.40 2.89
Gix4i. Uxdt 4x45 8x44 9x53 in.

$3.00 3.00 S15 3.25 3.50 each.

The above measurements a:e made under the cover, and are approximate,
the actual measure being in millimeters, do not precisely correspond with
English measures. These jars are well known to be about the only kind
through which ointments will not penetrate.

2558.—Ditto, ditto, ditto, octagonal shape, 44x8. Each, $2.50

2559.—Ditto, ditto, octagonal and oblong, 4}x6x7. sa 1.50

2560.—Ditto, Preparation,employed for the collection of anatomical
preparations, of fine white and clear glass, having the stoppers
thoroughly ground in with fine emery, and provided with glass
hook from which to suspend the objects to be preserved.

8 02. pts. | qts. % gall. 4 2
70 10 $1.25 1.75 3.00 6.00 each.

2561.—Ditto, ditto, of Bohemian glass, having the mouth parallel
with the sides.

2x4 24x5 34x6 Ax? 6x13 10x8 in.
50 Vd $1.15 1.75 6.00 .. 15.00 each.

2562.—Ditto, ditto, with stopper ground into the base of the jar,
the top being oval; used for laying down preparations or ex-
hibiting specimens. a

4 es 16 32 OZ.
30 50 V0 $1.00 each.
2563.—Jets, brass, for hydrogen. Each, .40
¥ 2564.—Ditto, ditto, with stopcock and cap. * $2.00

2565.—Ditto, for washing bottles, ordinary glass, bent. e306

120 E. B. BENJAMIN'S DESCRIPTIVE CATALOGUE

2566.—Jets, for Faraday’s washing bottles, drawn. Each, .10
2567.— Ditto, for Berzelius’s washing bottles. ee
2568.-—Ditto, for Bunsen’s burners, flattened ends. Cy Bs

2568 2569 2570 2573 2581
2569.—Ditto, Blast, to place in a Bunsen burner, having an extra
tube to connect with blow-table and produce blast. Each, $1.00

2570.—Jewelers’ Globes. fo
2571.—Julep Tubes, straight or bent. Per doz., 2.50
2572.—Kettles, porcelain, small. Each, 3.50
2573.—Ditto, ditto, large. “ 850
2574.—Knife, for cutting cork, wooden handle. 40
2575.——-Ditto, for blow-pipe use, with file on back. 15
2576.-—Ditto, for cutting around glass tubing. 50
2577.—Ditto, sharpeners, of porcelain.
5 in. .40 64 in. .50 each.

Kipp’s Apparatus for sulphuretted hydrogen. See Gas.

2578.— Labels, Chemical, with the old and new nomen-

clature, and old and new symbols on the same paper. Per set, .20
2579.—Ditto, Mawson’s, in book form, with gum backs, double
_ nomenclature. Per book, .50
2580.—Ditto, blank. Per doz. sheets, .36

Lactometers, milk. See Milk Assayers.
2581.—Lactoscope, Vogel’s, or optical milk test, in wooden case.
$12.00
The above illustration consists of a vessel in a semi-circular brass frame
and parallel glass sides, one-fifth of an inch apart. When this vessel is filled
with a mixture of new milk and water, the appearance of the mixture is ex-
amined by placing a candle at a distance of three feet from one side of it, and
the eye close to the other side ; the presence of a certain proportion of cream
renders the figure of the candle flame indistinct. The smaller the quantity
of milk required to obviate the candle light the better is the quality of
the milk. With the above comes a glass graduated vol cylinder on foot, with
spout, and a graduated vol pipette. The manner of operating with this, show-
ing the precise quantity of butter indicated iu the milk, will be furnished
with the instrument.

ne gi
ay
Ppa ase,

OF CHEMICAL AND PHYSICAL APPARATUS. 121

2582

2582.—Ladles, iron, for pouring metals.

3-inch bowl, .40 5-inch, .50 each.
2583.—Ditto, tinned, long handles.
5 54 6 in.

.60 70 80 each.
2584.—Ditto, porcelain, long handles. Each, .50
2585.—Lamps, for perfuming rooms, without flame. “ $1.25

Ditto. See Davy’s Safety.
2586.— Ditto, alcohol blast, Russian. 1.50
2587.—Ditto, brass blast, consisting of a large brass reservoir on
stand, with jet bearing on a lamp underneath. Each, $7.50

2588.—Ditto, alcohol, of brass, mounted on three legs, with sheet

iron jacket, containing a triangle to hold a crucible immediately

over the flame jet; the jacket increases the heat. Each, $12.00

2589.—Ditto, ditto, Lang’s, on tripod, with porcelain handle and
support for crucibles, or verforated sheet iron shelf, on top.

: Each, $3.00

ii

il

i

_-2590.—Lamps, Berzelius, of brass, on tripod, with triangle per-
forated shelf, and porcelain handles. Each, $4.50
2591.—Ditto, ditto, of the very best manufacture, of heavy brass,
and highly-polished mahogany and cocoa handles. Hach, $7.50
2592.—Ditto, ditto, of brass, with reservoir about 10 inches distant
from the burner, with a stopcock half way on connecting tube

to regulate the flow of the spirits. Each. $6.50
2593.—Ditto, ditto, or Rose’s form, on brass stand, with mahogany

foot, with rings, triangles, ete. Each $6.00
2594.—Ditto, ditto, ditto, with porcelain foot. 15.00
2595.—Ditto, ditto, Miller’s modification, mahogany base, having

rotary motion around the stand. Each, $7.00
2596.—Ditto, ditto, or Spirit lamps, of brass.

Small, $1.00 large, 1.50

2597.—Ditto, ditto, of glass, German, 4 0z., without caps. Hach, 20
2598.—Ditto, ditto, with round caps.

4 o2., .50 6 oz., 60 each.
2599.—Ditto, ditto, with large cap and square base.
3 5 8 02.
50 we) $1.00 each.
2600.—Ditto, ditto, vase form, 3 oz. Each, .50

2601.—Ditto, brass, for blow-pipe, with screw cap, for putting over
| ue Each, $1.00

OF CHEMICAL AND PHYSICAL APPARATUS. 123

2602.—Lamps, brass, long stem, for heating tubes and soldering.

Each, $1.25
- 2603.—Ditto, engravers, the top is to be filled with water to con-
centrate the light. Each, $4.00

Ditto, hydrogen. See Doebereiner’s Lamps.
2604.—Ditto, Plattner’s blow-pipe, brass, extra heavy, mounted on
stand. Each, $3.00
Lamps, gas. See Burners.
Lamp Stands. See Supports.
2605.—Lamps, Labratory, large wooden foot, with clamp, reflec-
tors, ete. Each, $20.00
2606.—Ditto, Students. Each, $2.50 to 4.00
Ditto, electric. , See Electric Lamps.
2607.—Ditto, Magnesium, with fan wheel and clock-work, for
burning magnesium ribbon or wire. Each, $25.00

2610

2608. —Ditto, oxhydric, of brass, mounted, on stand. <==
Each, $7.50 |

2609...-Ditto, ditto, ditto, larger. a. 6:00
2610.—Ditto, ditto, larger, with extra arrangement for lime holder,
moveable joints, ete. Each, $20.00

- 2611.—Ditto, ditto, ditto, very accurately adjusted, silver plated.
aes | | Each, $22.50
2612.—Ditto, ditto, on stand, French, Duboscq’s pattern.“ 25.00
2613.—Ditto, ditto, on iron stand. <.._ 20.00
Ditto, cylinders. See Burner Furnaces.

124 E. B. BENJAMIN’S DESCRIPTIVE CATALOCUE

~ 620

2622 2623

2613 2621 2628
2614.—Lamp Wicks, for Berzelius’s, Rose’s, Miiller’s, ete.
Per doz., .25
2615.—Ditto, for Plattner’s blow-pipe lamp. Per yard, .25
2616.—Lead Trays, for etching, on glass, with hydrofluoric acid.
Each, .40
Lead Retorts, for making hydrofluoric acid. See Retorts.
2617.—Leaf, Dutch. Per book, .25
2618.—Ditto, Gold. “$1.00
2619.—Ditto, Silver. re 75
2620.—Leech Tubes. Per doz., 1.00
2621.—Lenses, magnifying, for assayers’ use, or reading fine
print, ete. Each, $2.50
2622.—Ditto, Coddington, brass.
Small, $2.25 large, 2.50 each.
2623.—Ditto, Stanhope, German silver, for examination of minerals.
Small, $2.00 large, 2.50 each.
2624.—Ditto, ditto, silver. Small, $2.50 large, 3.50 each.
2625.—Ditto, ditto, silver, with cap, to keep the dust from them,
small. Kach, $3.50
2626.—Ditto, horn cases, single. 3
9 lines, .75 11 lines, $1.00 each.

2627.—Ditto, ditto, double glasses.
9 lines, $1.25 12 lines, 1.50 each.

Ae een ee CRT eee ian Sewage Mas ee EES a ee kT a PR RL, to Rg a cae Wh LA gee SE DE pe ce a ag ee ae eh ae wo ee eS ee ie hehe ee et: Be
PR ROR Re sath Oe ire eee ue tin ene Me tN ee ML a pe Le oag yo We GOR: eg flee A
‘ Bae Oe te Eas sf Se WA Sot a ee a Re ay ay Bars eke Ps e a4 Me a : <
Bae 1a A eA Sto Mise gfe aos es a Be POD ak. EY é id Ss UF ee 3 ;
LO “2 aoe ‘ 7 2

be
oe
a %
ae

OF CHEMICAL AND PHYSICAL APPARATUS. 125

2632 2633

2628.—Lenses, horn cases, triple glasses.

9 lines, $1.50 11 lines, 1.75 each.

2629.—Ditto, Photographic, Steinheil, of Munich, a very correct
and clear glass. $30.00
2630.—Ditto, watchmakers. 2.50
& 2631.—Ditto, a set of convex and concave, in a box. 2.50

Liebig’s Potash Bulbs. See Potash Bulbs.
2632.—Light, Refraction of, apparatus for. OO
2633.—Light Recomposition, revolving disc, with prismatic
colors, arranged consecutively. $2.50

2634.—Litmus Papers, blue, red or neutral, for test papers.

Per sheet, .05
See also Tumeric Paper.

2635.—Litre Bottles, stoppered and accurately guaged.

50 ce. 100 150 250 300 glitre: 1. 2
oO Ad 0 1d 8d $1.00 1.10 1.50 each.

9636.—Litre Flasks.

30 ce. 50 100 200 4 litre } 1
20 30 40 60 65 85 =©$1.00 each.
2637.—Ditto, ditto, two marks on the neck.
50 to 55 100 to 110 200 to 220 ce.
.60 0d $1.25 each.
2638. —Limb, Safety, Liebig’s. Each, .50
2639.—Magic Lanterns, French, square tin.
Small medium large
$6.00 10.00 15.00 each.

2640.—Ditto, ditto, black, oval shape, provided with a ratchet
screw and pinion for drawing in and out the lenses. Ea. $25.00
Magie Circles. See Electricity.

126 . E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

PE mM Ht

cc le
nn
wi

2
2
&
3
EB
=|
=

PT
Tutt

2640 2647 2630

2641.—Magneto-Electric Apparatus, new invention, for firing
the fuses, etc., in mine blasting. - . $100.00

In this apparatus the armature 4 4 is always in contact with the poles
of the magnet NV, 0, 8 It is supported by a piece of metal, B M, which
turns around a horizontal axis, a; this piece presents a kind of handle, B a,
having a knob at B, upon which one strikes with the finger in order to
produce the withdrawing of the armature; thus, at the moment of this
withdrawal, a first induction current is produced, passing contemporaneously
with. the movement which causes it, through the wire surrounding the
extremities of the magnet. As long as one keeps the armature withdrawn
from the magnet, the apparatus is inert; but as soon as one ceases to bear
down on the button B, the armature, impelled by a spring which acts on the
lever a B, drawn besides by the magnet, it turns instantly to the contact of
the poles N S; a second current is produced in a contrary direction to the first,
of equal intensity, as can be easily demonstrated with the galvanometer,
There is also connected with the instrument a stop X, the employment of
which holds the armature in a fixed position, so that it is impossible for elec-
tricity to pass. This instrument works in all weathers; and, while it is im-
possible to fire the fuse when the stop X is placed upon the armature, a
simple withdrawal of the stop X, and a smart rap of the finger upon the
handle B, will instantly fire a fuse by the electric current through a wire 500
to 600 yards in length.

2642.—Magneto-Electric Machine, in black walnut box, with
battery, complete. $10.00

OF CHEMICAL AND PHYSICAL APPARATUS. 127

2643.—Magneto-Electric Machine, fine polished mahogany box,

with Universal lock. . $35.00

-2644.—Magnesium, ribbon and wire. Per foot, .06

2645.—Ditto, ditto, ditto. Per ounce, $3.25

. 2646.—Maegnets, steel, straight. Each, 1.00
2647.—Ditto, Horseshoe, best English quality.

28 3 33 4 5 6 10in. -

25 30 .60 7d 90 $1.25 2.50 each.
2648.—Ditto, Horseshoe, compound. Each, $4.00
2649.—Ditto, pair of bar, in box. S 3.50
2650.-—Magnetic Needle, on stand. +75
2651.—Ditto Dipping Needle, with brass stand, simple form. 2.00
2652.—Ditto, ditto, more elaborate. . 8.00
2653.—Ditto, Toys, in boxes. .50 to 1.50

Marchand’s Drying Tube. See Chloride of Calcium
Tube.
2654.—Mariotte’s Law, apparatus for. $10.00

_ Marsh’s Arsenic Test. See Arsenic.
2655.—-Mattrasses, Bohemian, round bottom, long neck.

4 8 16 24 32 OZ
20 30 OY aa A0 A5 each.

See also Bolt Heads.
2656.—Measures, gutta percha, tall.

1 quart, $3.00 $ gallon, 3.50 each. 2659
2657.—Ditto, conical, quart. Each, $3.00
2658.—Ditto, Harcourt’s, for assayers, ivory, very accurate.“ — 5.00
2659.—Ditto, lead, for blow-pipe apparatus. 6 50
2660.— Ditto, porcelain, with handle and lip.

2 aio ie 8 16 02.

3d dD 395 $1.00 each.
Mechanical Powers. See Apparatus, Mechanics.
2661.—Mercury Box, earthen, oblong, glazed, 2x5. 5
2662.—Ditto, Bottles, or Flasks of iron. Each, $1.50
2663.—Ditto, Jar, or Powder Cup, porcelain, 5 lbs. 1.50
2664.—Ditto, ditto, glass.
16 18 24 in.
$1.00 1.50 2.00 each.
2665.—Mercurial Receiver, Cooper’s, plain, small. 50
2666.—Ditto, ditto, larger. $1.00

2667.—Ditto, ditto, stoppered at the top. 1.50

128 kk. B. BENJAMIN’S DESCRIPTIVE CATALOSUE

2668.--Mercurial Receiver, graduated, plain. $1.25 to 1.50 ~

2669.—Mereury Shower, through porous wood. 3-06
2670.—Ditto, Trough, porcelain, to hold 5 Ibs. 1.00
2671.—Ditto, ditto, to hold 16 Ibs. 2.00

2672.—Metre Measures, graduated to millimeters on one side,
English inches on the other side, graduated by government
standard, folding together in short lengths for the pocket, of

box-wood. Each, .50
2673.—Ditto, ditto, ditto, of ivory. « $9.95
2674.—Ditto, ditto, fine ivory ruler, or paper cutter, for the desk,

with a knob in the center. Kach, $7.50

2675.—Ditto, ditto, ivory, small, graduated 10 to 12 centimeters.
2676.—Microscopes, No. 1, Universal joint, on flat standard,

small. _ Each, $7.50
9677.—Ditto, ditto, No. 3. “ 10.00
9678.—Ditto, ditto, No. 4. “ 15.00

2679.—Ditto, No. 1, supported on two columns, with thumb screw,
allowing the tube to rest in an upright or vertical position,
having two objectives and a jointed light reflector. Ha. $25.00
2680.—Ditto, ditto, by Natchet, compound. “20,00

Tj

We

i ‘

2668
2681.-—Ditto, large, Gundlach’s, English stand, thumb screw deli-
cately adjusted, in fine polished mahogany case, lock and key,
with strap for carrying, two eye pieces, five objectives, including -

one of his fine immersion lenses of very high power, slides,
chamois skin, ete. $225.00

The high reputation of: this celebrated manufacturer is too well known to
need any further descripticn of the foregoing instrument; it is precisely the
same make and character in every particular as the one I exhibited at the
meeting of the American Association for the Advancement of Science, held at
Troy, which was so favorably spoken of in the notice of their proceedings.

2693

2682.—Microscope, solar, complete, with all the appurtenances,
in fine polished box, comprising colored glasses, mounted,
seyeral objectives, manufactured expressly for me by the manu-
facturer for the University of Vienna. $200.00
Ditto, pocket. See Loups or Lenses.
Ditto, aplanatiec, Steinheil. See Photographic Lenses.

2683.—Microscopic Covers, circles. Per doz., .35
2684.—Ditto, ditto, ditto. Per ounce, $4.00
2685.— Ditto, ditto, square. Per doz., 30
2686.—Ditto, ditto, ditto: Per ounce, 3.00
2687.— Ditto, Slides. Per doz., .%0

Minerals. See full list and description at the latter part
of this book.
2688.—Mineralogists’ Slates, of unglazed porcelain, for show-
ing the streak. 2x24, .40 4x5#, .50 each.
Mineralogical Hammers. See Hammers.
Minim Glasses. See Graduates.

2689.—Miser’s Plate. $2.50
2690.—Mixing Capsules, of brass, for blow-piping and assay,
according to size. 0. to $1.00
' Larger sizes made to order.
2691.—Ditto, ditto, horn. Each, .25
2692.—Ditto, Bottles, ground stoppered, carefully ground and
graduated. 300 c. ¢., $2.50 1000 c. ¢., $3.50

2693.—Ditto, Jars, carefully ground and stoppered.
500 ec. ¢., $2.50 1000 ¢.¢., $4.50

130 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

694.—Models, of Crown Diamonds, imported to order, com-
prising four of the largest crown diamonds. Each, $20.00
Ditto, of Precious Stones, Crystals, etc. See Collections.
Models of Mining Machinery, Tools, Furnaces, etc.,
as employed in the School of Mines at Freiburg, Saxony; duty
free ; imported only to order, viz:

2695.—Model, of Arch Protector. $6.00
2696.—Ditto, amalgamating apparatus. 40.00 to 45.00
2697.—Ditto, of apparatus, for the Ascent and Descent of men in
a mine. 18.00 to 25.00
°2698.— Ditto, of deep Shaft Bucket-lift, with bucket. 4.50
2699.— Ditto, of shallow Shaft and Bucket-lift, with bucket. 7.50
2700.—Ditto, of iron Bucket-lift, with bucket, ) 18.00
2701.—Ditto, of Buddle, for stamp ore. 9,00
2702.—Ditto, Horse Capstan. 60.00
-2703.—Ditto, Miners’ Cage. 3.00
2704.—Ditto, Mulderhutte Cinder hoister. 37.50
2705.—Ditto, Hydraulic Composing-machine. 30.00
2706.—Ditto, usual form Composing-machine. 12.00
2707.—Ditto, of Constructing Tools, various. 150.00 to .210.00
2708.—Ditto, Patterson’s Concentration Apparatus. 60.00
2709.—Ditto, “ Crab,” for hauling and heaving vessels into dock.
$12.00
2710.—Ditto, of ore.
2711.—Ditto, of ore Crushing Machine, with lifter. 350.00
°712.—Ditto, ditto, without lifter. : 225.00

2713.—Ditto, of round Buddle, for dressing stamped ore.
45.00 to 52.50

2714.—Ditto, of Buddle stationary frame. 45.00 to 52.50
2715.—Ditto, of cylindrical blast Bellows, in wood. 8.50
2716.—Ditto, ditto, ditto, in metal. 225.00 to 315.00
2717.—Ditto, of Driving Ton, for flat shaft. 2.50
2718.—Ditto, of Delivery shaft. 250
2719.—Ditto, of separating Drum for well hole. 15.00
2720.—Ditto, of Drill, with drilling apparatus. 5.00 to 90.00
2921.—Ditto, of steam Engine, with horizontal cylinder and

paddle-wheel movement, in wood. $45.00 to 60.00

(22.—Ditto, ditto, ditto, in metal. 225.00 to 300.00

lawme

or
2723.——Ditto, steam Engine, with working beam, in wood.
$120.00 to 150.00

OF CHEMICAL AND PHYSICAL APPARATUS. 131

2724.—Model, steam Engine, in metal. ~ $270.00 to 375.00
2725.—Ditto, of steam Engine, with air-condensing cylinder, in
wood. $135.00 to 165.00
2'126.—Ditto, ditto, ditto, in metal. | 250°00 to 350.00
2727.—Ditto, oscillating steam Engine, in
wood. $150.00 to 200.00

2728.—Ditto, ditto, ditto, in metal.
$300.00 to 450.00 ete Si
2729.—Ditto, water-pressure Engine, com- =|
plete. $150.00 to 450.00 in i
— 2730.—Ditto, Extraction apparatus lore

$30.00 GO

2731.—Ditto, of refining Forge, German.

Larne Pa

$15.00

2732.—Ditto, Hartz linen-covered Frame, for dressing slime.

| $18.00
2733.—Ditto, annealing Furnace, or oven. 25.00
2734.—Ditto, assay Furnace. 12.00
2735.—Ditto, blast Furnace, for iron. 37.50
2736.— Ditto, cupola Furnace, with ventilator. 37.50
2737.—Ditto, ditto, ditto, without ventilator. 24.00
2738.—Ditto, Freiburg Furnace, with double draft. 21.00
2739.—Ditto, ditto, lead Furnace. 18.00
2740.—Ditto, Hartz lead Furnace. 27.00
2741.—Ditto, puddling Furnace. 24.00
2742.—Ditto, iron refining reverberatory Furnace. 60.00
2743.—Ditto, reverberatory smelting Furnace. _ 22.50
2744.—Ditto, English reverberatory smelting Furnace. 60.00

2745.—Ditto, Mansfield roasting Furnace, with double draft. 22.50
2746.—Ditto, of reverberatory Furnace, for the concentration of

copper ore. $55.00 -
2747.—Ditto. of Hungarian reverberatory roasting Furnace. 33.00
2748.—Ditto, English roasting Furnace, with four work openings.

$35.00
2749.—Ditto, muffle roasting Furnace. 33.00
2750.—Ditto, Furnace, for silver refining. 27.00
2751.—Ditto, Mansfield “ Spectacle” Furnace. } 12.00
2752.—Ditto, Saxony Furnace, for tin ore. . 10.00

2753.—Ditto, Furnace, for zine ore. 45.00

4 hs tae
bie 9 Si sp. Slemine AS

os Lae ee Ae oy hg AN as og se eet
Re eM eat ea pg ee ae
ES VEO RM ye ; pte fe

132 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

2754.—Model, curved Furnace, or oven. , 12.06
2755.—Ditto, of Gold washing machine. 30.00
2756.—Ditto, of lift Hammer, in wood. 24.00
2757.——Ditto, ditto, ditto, in metal. 45.00
2758.— Ditto, steam Hammer, in wood. 37.50
2759.—Ditto, ditto, ditto, in metal. 67.50
2760.—Ditto, forge Hammer, of wood. . 24.00
2761.—Ditto, ditto, ditto, of metal. 40.00
2762.—Ditto, tilt Hammer. 24.00
2763.—Ditto, of Hearth of a foot wall. 9.00
2764.—Ditto, Freiburg refining Hearth. 50.00
2765.--Ditto, English refining Hearth. 30.00
2766.— Ditto, of inclined Plane, with drawing weights. 36.00
2767.—Ditto, of Cross Lever, in wood. 7.00
2768.—Ditto, ditto, ditto, in iron. - $12.00 to 18.00
2769.—DItto, of Machine, for ore washing. 15.00
2770.—Ditto, ore Mill, with water wheel. 125.06
2¢971.—Ditto, ore Mill, without “ 100.00
2772.—Ditto, stamp Mill, for two wet and one dry charge, with
wheel. . ; 75.00
2773.—Ditto, ditto, ditto, ditto, without wheel. 45.00
2774.—Ditte, of rolling Mill, for bar iron, in wood. 57.00
2775.-—Ditto, ditto, ditto, in metal. 275.00
2776.—Ditto, warm air Oven. 15.00
2777.—Ditto, hand Pump. 7.50
2778.—Ditto, Rail “ Dog,” with truck, English. _ 15.00
2779.—Ditto, ditto, ditto, without truck, Hungarian 7.50
2780.—Ditto, plain Reel. 6.00
2781.—Ditto, of sinking Shaft, of iron. 37.50
2782.—Ditto, ditto, ditto, of wood. 22.50
2783.—Ditto, ditto, ditto, with round wall. | 30.00
2784.—-Ditto, upright Shaft and under-grotnd workings. 220.00
2785.—Ditto, Shaft timbering, for hoisting windlass. 12.00
2786.—Ditto, Screening, or Sifting Machine. 40.00
2787.—Ditto, Sweep Table. | 18.00
2788.— Ditto, of “ Dolly Tub.” 2.50
2789.—Ditto, Trunks, for the precipitation of the slimes in stamp-
ing mill. $40.00 to 45.00
2790.—Ditto, Ventilator, as used in the Hartz mines. 22.50

OF CHEMICAL AND PILTYSICAL APPARATUS. 133

2791.—Model, Ventilator, according to Fabry’s method. 75.00
2792.—Ditto, ditto, ditto, | Karsten’s method. 37.50
2793.—Ditto, under-ground working of mines, with ridging and

stoping; also chambering and mason-work up to the deposit

bed. } $45.00 to 60.00
2794.—Ditto, Wheel-barrow. 3.00
2795.—Ditto, of tread Wheel. 15.00
2796.— Ditto, hand Windlass. — 22.00
2797.—Ditto, turning Wheel | 40.00
2798.—Ditto, Water-wheel, Forneron’s method. $60.00 to 75.00
2799.—Ditto, ditto, Chouvel’s. 60.00 to 75.00

-2800.—Ditto, ditto, Schwamkrug’s, with vertical motion. 75.00
2801.—Ditto, ditto, overshot. 30.00
2802.—Ditto, ditto, undershot. 22.50
2803.—Ditto, ditto, breast. 30.00
2804.—Ditto, ditto, for back water. 30.00
2805.—Ditto, ditto, for drawing engine according to Schwamkrug’s

method. $270.00

2806.—Ditto, Water-wheel tools, as used by Schwamkrug. 235.00
2807.— Ditto, of the two above-mentioned, in one collection. 425.00
2808.—Ditto, Water-whim, with crate of iron. $150.00 to 225.00
2809.—Various models of shaft, pit, and underground timbering
and mason-work, for mines. $5.00 to 10.00
Other models can be made by the same manufacturers, in

metal or in wood, accompanied with full drawings and descrip-

tions.
2810.—Monochromatic Light Apparatus, for showing Sodium

Flames, complete, with lamp, after Dr. Morton. $12.00

2811.—Mulders’ Absorption
Meter, for determination of
carbonic acid from all bases,
according to Fresenius. $5.00
Mohr’s Apparatus, va-
rious, distributed under dif-
ferent headings throughout
the Catalogue. 3
2812.—Mordaunt Cloth, for dyers’ test. ‘Per yd., $2.00
2813.—Mouth Pieces, of horn, for blow-pipes, trumpet shape,
also cylindrical and trumpet combined. Each, .25

134 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

2811
2814.—Mouth Pieces, cylindrical, of ivory. Each, .50
2815.—Ditto, ditto, of turned wood, for inhaling gases, cr to attach
to gas bladders. Each, .25

2816.—Ditto, ditto, of bone, for inhaling bags. Each, -25 to $1.00

2817.—Ditto, ditto, box-wood, for nursing bottles. 25
2818.—Mortars, agate, with pestles.

14 14 1g. «1g 14 2 21 in.
$1.90 2.00 215 220 225 3.00 3.25 each.
Qh Oa. ge 28 O20 BE 3 in.

$3.75 4.00 450 54.00 6.00 Tie

3 yo me 4 44 5 54 54 in.
$8.50 9.00 15.00 17.00 20.00 45.00 30.00 «

2819.—Ditto, ditto, mounted in wood. Extra: Each, $1.00
Ditto, diamond. See Diamond Mortars.

Or
Or
S

OF CHEMICAL AND PHYSICAL APPARATUS. 135

2820.—Mortars, glass, with lip and pestle, shape conical.
Nos. 1176 1175 1174 1173 1172

Size, 34 32 44 43 Ad in.
Price, .75 $1.00 1.25. 1.50 1.75 each.
2821.—Ditto, hemispherical, glass, with pestle.
2 3 5 6 in.
30 Bd 65 $1.00 each.
2822.— Ditto, iron, bell shape.
4o0z. ~ 8 16 32 $ gall. 1 2
40 10 $1.00 1.25 2.00 3.50 4.75 each.

Ditto, iron. Other styles, special prices.
2823.—Ditto, porcelain, emulsion, with pestle and strainer.

Each, $2.00
2824.— Ditto, ditto, with knobbed handles on either side, containing

% galion. Hach, $5.00
2825.—Ditto, ditto, ditto, ditto, 1 gallon. «6 8.00

2826.—Ditto, ditto, ditto, ditto, 1 “ emulsion, sharp lipped, and
ring around the top, cover'and porcelain handles. Each, $6.50

2830. 283 ¢ 2835

2827.—Ditto, ditto, deep mixing, glazed outside.
~ Nos. 0 1 2 3 4 5 6 7 8
Diam, 3 34 44 52 6 7 8 92 in.
Price, .45 .60 .%75 $1.00 1.25 1.50 2.00 3.00 4.50 each.
2828.—Ditto, ditto, ditto, glazed throughout.
Nos. 0 1 4 6
dd 70 $1.25 2.50 each.
= —Ditto, ditto, shallow, for powders, glazed on the outside,
with or without lip.
Nos. 00 0 r 2 3 5 6
Ring, 2h 98° 902 Or an 526 in.
Price, .35 40 50 .60 70 80 = $1.00 each.
Nos. 7 8 9 10 id 14 16

Size, 7 te »* 8t 9 94 124 14} in.
Price, $1.25 1.40 1.65 1.85 2.00 5.50 18.00 each.

7
SO

136 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

2830.— Mortars, wedgewood.
Nos. 0000 000 00 Pos ee gy 3 4 |
Price, .40 50 55 .65. .70 .90 $1.10 1.40 each.

Nos. 5 6 y 8 Oy IOS oh ae
Price, $1.70 2.00 2.50 3.50 4.00 450 5.25 6.00 *«

2831.—Ditto, steel polished inside and out.

3 inches, $2.00 6 inches, 5.00 each.
2832.—Moulds, of boxwood, for rolling the paper for cartridge
cases in blow-piping. ) Each, .20
2833.—Ditto, ditto, with pestle, for forming clay basins in blow-
piping. Each, .75
2834.—Ditto, brass, for making charcoal crucibles in quantitative
blow-pipe analysis, in four pieces. Each, $4.25
2835.—Ditto, ditto, for making cupels. Each, $2.50 to 4.50
2836.—Ditto, ditto, for making scorifiers. 6 G00: tata

2837.—Ditto, charcoal of wood, for forming oblong charcoal pieces.
' Hach, $1.25

j ]
Lily
iti i
|

GR9G OT 2842 2845 284

2838.—Ditto, iron, for making gold and silver ingots.
Each, $1.50 to 2.50
2839.—Ditto, steel, for cupelling before the blow-pipe, two sizes

and two pestles, with support. Each, $2.75
2840.—Ditto, suppository. Rf 7.50
2841.—Muffles, sand, large. Me ae
2842.—Ditto, ditto, ditto, for Hibb’s furnaces, fire clay. “ 125
2843.—Ditto, ditto, for Kent’s furnaces, round ends. «6 Bd
2844,—Ditto, French, thin and strong, No. 5, 23x34. 6 30
2845.—Ditto, ditto, ditto, No. 6, 2$x33. 7 20

2846.—Ditto, ditto, ditto, No. 7, 3x44. « 45

Pe eS We ee ee Pe ae

OF CHEMICAL AND PHYSICAL APPARATUS. 137

2847.—Muffles, French clay, best.

A B 0 D E F G H

BR 4 8D ak vad a 4

Bhs hk a a bh 8 BRO

dee. OES IE 8 8h, 610 a
Price,.50 60. .%70 .%75 $1.00 1.10 1.20 1.50 2.00 each.

2848.—Mullers, Glass. 3 in., $1.25 4 in., 2.25.
Slabs for above. See Plates. :
Ditto, Agate. See Agate Slabs, with Muller.

2856

2849.—Nicholson’s Hydrometers, for ascertaining Specific

Gravity of solids, minerals, etc., made of brass. Each, $4.00
2850.— Ditto, ditto, ditto, including jar. “i 6.00
2851.—Ditto, ditto, ditto, of tin. | $6 2.00"
2852.—Nitrogen Bulb, Will & ae. s, 3 bulbs. “ 65
2853.—Ditto, ditto, ditto, er ge ado
2854.—Ditto, Limbs, Liebig’s, for connection. * 75
2855.—Nitrous Oxide Gas, apparatus for eee “ 3.50
2856.—Ditto, ditto, ditto, smaller. & 2.50

Nipper Taps. See Pinch Cocks. .
2857.—Nipple Shells, French, with ring. Per doz.,'4.50

2858.—Nursing Bottles,
ditto. Per doz., $1.25
2859.—Ditto, ditto, corks. 4
Per doz., $.50 ©
2860.—Ditto, ditto, tops =
box- wood. Per doz., $1.00 2853

138 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

2861.—Oil Receivers, Florentine.
Pints, .75 quarts, $1.00 each.

Organic Analysis. See Apparatus for.

Optical Apparatus. See Optics.

Oxygen Retorts. See Gas Generators.

Oxhydrogen Blow-pipe. See Blow-pipe.
2862.—Ozonometer, Sieman’s.
2863.—Ditto, to attach to the new Borchard electrical machine,

for collecting ozon $6.00
2864.—Page’s Rotating Apparatus. 16.00
2865.—Ditto, Revolving Electro-Magnet. 8.00
2866.—Paper, bibulous. Per bundle of 1000 sheets, 4.50

Ditto, filtering. See Filtering Paper.

2867.—Ditto, glazed. Per sheet, .05; per quire, .75
2868.—Ditto, litmus. Per sheet, .05
2869.— Ditto, neutral. | & 05
2870.—Ditto, parchment. ss 25

2871.—Ditto, tea, No. 1. Per quire, .10

B ee ig t

OF CHEMICAL AND PHYSICAL APPARATUS. 139
2872.—Paper, tumeric. Per sheet, .05
2873.—Ditto, weights 50
2874.—Pallettes, small. Each, .25
2875.— Ditto, large. ae
2876.—Pans, expectorating. 2 28
2877.—Ditto, for gold washing. DO

Ditto, horn. See Horn Pans.
2878.—Parabolic Reflectors.
13 in., $16.00 15 in., 25.00 10 in., 13.00
2879.—Ditto, ditto, nickleized or silvered, additional. $2.50

7 i

2881 2881 2884
2880.—Perculators, Mohr’s glass and tin. Each, $8.00
2881.—Ditto, of glass. Pints, .50 gall., $1.00 each.

See also Displacement Apparatus. ‘
2882.—Perfume Bottles, French, fancy shaped, ground, stop-

pered with ball top. Per 100, $7.50
2883.—Ditto, ditto, amber and blue diamond, pressed, 1 oz. Ea. .40
2884.—Ditto, ditto, ditto, pressed, ball stopper. 6.
2885.—Ditto, ditto, green, cut crystal glass. SOD
2886.— Ditto, ditto, square, crystal, cut top. Per doz., 6.00
2887.—Pestles, porcelain. | Each, .50
2888.—Photometers, Bunsen’s, graduated, 5 foot bar, with scale,

diaphragm and candle holders. Each, $30.00
2889.— Ditto, regulation burner. Ke 5.00
2890.— Ditto, candles. Per lb., .75

Ditto, Meter. See Gas Meter.

140 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

2888 ;
2891.—Photographie Baths, porcelain, small. Each, $4.00
2892.—Ditto, ditto, ditto, large. 8: 5.00
2893.— Ditto, Dishes, porcelain, shallow, with lip, Royal Berlin,

9 inches. Each. $2.73
2894.—Pill Boxes, for rounding and silvering pills.“ Th
28 95.—Ditto, tiles.

5 6 7 in.
40 0 “75 each.
2896.—Pineers, gas, with corrugated jaws, for handling gas and

other pipes, with screw driver on handles. $1.00 to 1.0

2399 2900

V 2897.—Pinch Cocks, Mohr’s, brass.

Small, .25 large, .35 each,
2898 .—Ditto, ditto, with bent lip and screw, to regulate the flow
of liquids.
Nos. 1 2 a 4
30 40 00 -60 each.

2899.—Ditto, ditto, with rubber attachment and glass tips.
Small, .35— - large, .65 each.

OF CHEMICAL AND PHYSICAL APPARATUS. 141

2900.—Pinch Cocks, Mohr’s, with steel spring and heavy plate
brass, with steel bow, having number and register screw in
fractions to regulate the drops, in careful estimation. Ea. $1.75

2901.—Ditto, ditto, brass wire, with protecting plate. ss 20
2902.—Ditto, ditto, Bunsen’s. : Per doz., 7.50
2903.—Ditto, ditto, Dr. Squibb’s modification, arranged to employ

but one screw. | Each, .50
2904.—Pipes, for hydrogen bubbles. 6.5) ae

2905.—Ditto, organ; special prices.

2906 2907 ~909 2910 2911 2912 2913

2906.— Pipettes, straight, 6 in. long, drawn to the end.

Each, .10; per doz., $1.00
2907.—Ditto, cylindrical, or ball. Hach, .25
2908.—Ditto, with rubber ball, plain. << 50
2909.— Ditto, fixed, or volume.

2 Rade 10. Bo eo, BOO" TO. 200. 160) 200 cea;
15 20 25 320 35 40 45 50 665 .85 .90 $1.00 each.

2910.—Ditto, Ettling’s. Each, .75
2911.—Ditto, filling. “ $1.00
2912.—Ditto, dropping, graduated, 100 in 10. v5
2913.—Ditto, Mohr’s, graduated.

d 3 10 10 10 15 20 ce.

1 1 1 ; :

TO 20 oD ty vo 10 10
20 Wd 15 9) $1.00 1.10 1.15 each.
25 25 30 dO d0 109 190 ee.

L abe 4

1 1 ie
10 1

5 10 a 5 2
Sh18) F200. L206: 1:35 1.40 2.00 2.50 each.
2914.—Ditto, ditto, graduated from 0° to 5°, 0° to 10°,
1 inrog $1.00 in vs, 75 in v's .85 each.

1 in vs .75

: Ls ‘ ~ ie
mk ot if eS . % it
Sieg eras Oe : fp Bee
* Aa Oe aes cae eet ee aban le SAS Me EE i

142 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

2915.—Pith Balls, per dozen. 25
2916.—Ditto, Birds, <“ $1.25
2917.—Ditto, Images, per pair. MD
2918.—Plates, brass sliding rod, hook and check screw. Ea. 5.50
2919.—Ditto, earthen, glazed, 6 inch. “ee

2924 2928 2933 2934
2920.—Ditto, ditto, perforated, with rim around the top, flat.
3 4 4s 5 in.
Oe Ge 30 40 each.
Ditto, glass. See Covers and Glass Plates.
2921.—Ditto, porcelain, deep, rectangular. Each, 1.%5

2922 .—Ditto, ditto, for arsenic and color tests, assorted sizes.

: Each, .50 to $1.00
2923.—Ditto, porcelain, perforated. Small, .90; large, $1.00
2924.—Ditto, porous, square.

45 AG

AO Ad
2925.—Platinum Dishes.
t 3 1 2 3 4oz. Per grain, 3

4

2926.—Ditto, Boats, for combustion.

oe Ou

Ole

28 2g . $4in. ¥ 3
2927.—Ditto, Spatulas. |

3A ABE Be) SS ae 3
2928.—Ditto, Spoons, with or without covers ; 2 sizes, “ 3
2929.—Ditto, Serap. $ ly
2930.—Ditto, Sponges, German. Each, .30
2931.—Ditto, ditto, French. oo

Ditto, spongy. See Chemicals.

2932.—Ditto, Jets or Tips. _ Each, .75 to $1.00
2933.—Ditto, End Tongs, steel, double bend. Kach, 6.00

2934.—Ditto, ditto, German silver, double or single bend. “ 6.50

+
i;
e.
Ms
a
ep
By
os

OF CHEMICAL AND PHYSICAL APPARATUS. 143

Platinum Retorts, special prices.
2935. —Ditto, Sheet and Foil, ordinary size and thickness.
: Per grain, .24

2936.—Ditto, wire, ditto, ditto, fine as hair. Per foot, .25
2937.—Ditto, Foil, very thin for batteries. Per grain, 34
2938.—Ditto, Wire, for blow-pipe. Per foot .30 to .60

Ditto, ditto, and Foil Gauze.

2941
2939.—Ditto, Covers. 14, 1%, 14, 18, 13,1$,2in. Per grain, 3
2940.—Ditto, Crucibles. 4, 4, 2, 1, 2, 3 oz. and larger sizes, spe-
cial to order. Per grain, .3
2941.— Pliers, steel wire, round ends, square ends, and cutting
ends. Each, $1.00 to 1.25
Pneumatic Apparatus. See the end of the book.
2942.—Ditto, Cistern. $12.00

2943.—Ditto, Pumps, Sprengel’s mercurial, of glass, in fine polished

walnut frame, French make. This article being excessively frail

and delicate, is only imported on special order, with deposit, and

at the risk of the purchaser. Each, $150.00

2944.—Ditto, ditto, or lever Air pump, heavy, hard wood frame, 40

inches high, barrel 12x3{ inches, and plate 12 inches in dia-

meter, with manometer attached. Each, $200.00

2945.—Ditto, ditto, ditto, Carré’s, with separate arrangements, for
exhausting air and freezing water on same apparatus.

Each, $150.00

144 HR, BENJAMIN’S DESCRIPTIVE CATALOGUE

2946
2946.—Pneumatic Pump, on flat base; barrel 8x24 inches;
plate 10 inches diameter, with manometer. Each $100.00
2947.—Ditto, ditto, with cylinder, 74x24 inches, and plate 8 inches
diameter, barrel placed vertically. Each, $50.00
2948.—Ditto, ditto, barrel 7x14 inches, plate 74 inches diameter.
Each, $25.00

’

ik
eS

295d

2951 2952 2956
2949.—Ditto, ditto, barrel, 7x1 inches; plate, 6 inches diameter.
Each, $18.00
2950.—Ditto, ditto, without any stopcock. y 15.00
2951.—Ditto, ditto, not mounted, for organic analysis. “ 10.00
2952.—Ditto, ditto, “ a4 15.00.

Roe Bees = cal

ia

4
“ah

%
ees
ee,

«, Ls :.

OF CHEMICAL AND PHYSICAL APPARATUS. 145

2953.—Pneumatie Trough, of tin, japanned, 9x12, with shelf
$2.75

92954.-—Ditto, ditto, ditto.
11x15 in., with shelf. if
$3.50

2955.—Ditto, ditto, ditto,
13x16x12 in, with
shelf. $5.00
2956.— Ditto, ditto, of best
annealed glass, with-

out a joint, without
shelf, 10x5 in. $4.50
2957.—Ditto, ditto, ditto,
ditto, 12x6 in. $7.00
2958.—Ditto, ditto, ditto,

ditto, 14x7 in. $8.50 } a i=
Polariscope. See eesti | N gs ;
Turmaline Pincers. 2959
2959.—Polarization Apparatus, Mitscherlich’s, carerully con-

structed, on a metallic stand, double tubes. $60.00

2661
2960.—Ditto, ditto, Wild’s, for the examination of sugars, syrups,
and beet sugar, in a fine polished mahogany case, with tubes,
lamps, etc., complete. $178.00
2961.—Ditto, ditto, Soleil’s, of finely polished brass, with three

146 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

2962
tubes, complete, in a fine polished mahogany box, lock, key,
ete., with instructions. $150.00
2962.—Ditto, ditto, according to Soleil-Ventzke, with microscope
for the micrometer scale, 1 tube 100 millimeters, and 1 tube 200
millimeters ; complete, with the apparatus and mstructions
which usually come with this instrument; also having Dr.
Scheibler’s attestation as to its accuracy, it having been thor-
oughly tested by him. $225.00

2964 296. 2966 2968

2963.—Ditto, ditto, Norremberg’s, for the analyzing of light. Im-
ported only to order. $60.00
Pressure Boards. See Gas Bags.
2964.—Pomades, glass. 1 o2., $1.25 2 oz., 1.50.

Ditto, porcelain. See Jars.

OF CHEMICAL AND PHYSICAL APPARATUS. 147

Porous Cups. See Cells.
Ditto, Plates. See Plates.

2965.—Potash Bulbs, Mitscherlich’s. Each, .60
2966.— Ditto, ditto, Liebig’s latest form. ee
2967.—Ditto, ditto, Mohr’s. «90
2968.—Ditto, ditto, Geissler’s. “ $1.00

2969 2971
2969.— Ditto, Pipettes. Each, .80
2970.—Precipitating Glasses.
18 8 16 32 OZ. 4. 1 gall.
20 30 A0 .60 .80 $1.10 each.
2971.—Preparation Glasses, flat bottom, thin glass.
6x14 Yea 7x14 8x14 in.
$1.25 1.40 1.50 2.00 per doz.

2972.—Ditto, ditto, round, bottom. See Specimen Tubes.
Ditto, Jars. See Jars for Analytical purposes.

2973.—Prisms, hollow bottle, 60 deg. angle. Each, 7.50
2974.—Ditto, ditto, extra fine, ground, of one piece of glass, and
carefully stoppered, by Steinheil. Each, $50.00
2975.—Ditto, ditto, mounted in brass, on stand. ss 15.00
2976.—Ditto, ditto, series of 3, mounted. : ¢é 30.00
2977 .— Ditto, flint glass, 3 in. « "5

: 2978.—Ditto, ditto, 4 in. “ 1.10
¢~ 2979.—Ditto, ditto, 5 in. «< 2.00
2980.— Ditto. ditto,. 6 in. “ 3.00
2981.—Ditto, for dark chamber, 15 lines. ‘<6 2.00

Pe. 9982.Ditto, « « Ql « “« 9.50

$ =<

148 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

2983.— Prisms, acromatic, 30x27 m. m. Per pair, 5.00
2984.— Ditto, ditto, oUxon.. ‘“ 6.00
2985.— Ditto, ditto, 40x38 * “ WY O95
2986.—Ditto, ditto, 45x45 3 “ 9.00
2987.—Ditto, equilateral flint, 33x30 m. m. Each, 4.00
2988 .— Ditto, ditto, ooxas . oe 5.00
2989.—Ditto, Nicol’s assortment. ? Each, $6.00 to 10.00

OY

2992 2993 2994

2990.—Proof Glasses. $Each, 1.25
2991.—Punch Sticks, with porcelain ends, for
crushing crystals in deep vessels, etc. Hach, .25
2992.-—Pulse Glasses. (See also Water Ham-
mer.) Each, .50
2993.—Pumps, glass model, for lifting. ‘“ $1.50
2994.—Ditto, ditto, for forcing and lifting. “ 1.50 }
2995.—Ditto, Hydraulic, for blowing, by baromet- he

ric pressure. Each, $30.00 _
2996.—Ditto, glass apparatus, for showing the principle of the
forcing pump as applied to the fire engine. Each, $5.00

2997.—Ditto, Bunsen’s quick filtering apparatus, consisting of
, pump, platinum cone, mould and holder, set of funnels, bottles

and support. Complete, $18.00
2$98.—Pungents, white, or large open mouthed, ground, stop-
pered bottles. 1 02., $4.50 2 oz., 5.00 per doz.

OF CHEMICAL AND PHYSICAL APPARATUS. 149

2999 3000 3001 3003 3910
2999.—Pungents, amber, large open mouthed.
1 oz., $4.50 2 0z., 5.00 per doz.

3000.—Ditto, cut glass, with ground stopper and hinged silver
caps, assorted colors. No. 1, $20.00; No. 3, 35.00 per doz. |

3001.—Ditto, cut glass, union or double ends; one end hinged
and the other screw, silver top, assorted colors.

No. 1, $35.00 No. 8, 45.00 each.
3002.—Ditto, ditto, ditto, gold plated on silver.
No. 1, $45.00 No. 2, 65.00 each.

3003.—Ditto, cut glass, with ground stopper, and oe caps,
gold plated on silver.

No. 1, $25.00 No. 3, 40.00 per doz.
3004.—Pyrometers, on mahogany base, with dial and needle,
spirit lamp, brass and iron rods. Each, $6.00

3005.—Ditto, ditto, larger, with spirit reservoir of brass, running
the whole length of the apparatus, for heating the rods uni-
formly, having sliding cap to shut off the flame. $12.00
Quetschhahne. ‘See Pinch cocks.
Quick Filtering Apparatus. See Filtering Apparatus.
Quilled Receivers. See Receivers.

3006.—Radiator, Leslie’s. $2.50
3007.—Rasps, round, for filing ¢orks.
4 D 6 t 8 in.
25 30 40 45 00 each.

Reagents. See Chemicals at the back of the book.
3008.—Reagent Boxes, for sets of 9 reagents, filled. Each, 2.50
3009.—Ditto, ditto, ditto, having places for blow-pipe, platinum

box, tweezers, etc., filled. Each, $4.00
3010.—Ditto, ditto, including blow-pipe, tweezers, etc. “ 6.00
3011.—Ditto, Chests, medium size. 10,08
3012.— Ditto, ditto, large. &“ 12.00
3013.—Receivers, for retorts, plain, genuine Bohemian glass.
23 5 galls.

$2.00 3.50 5.00 each.

150 Yr. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

it, 8014.—Receivers, for retorts, tubulated, unstoppered.

8 16 32 OZ.
45 5 -70 each.
3015.—Ditto, Bohemian glass, quilled.
8 02. 16 32 $ gall. 1
10 80 $1.20 1.70 2.00 each.

3016.— Ditto, glass, tubulated and stoppered.

2 oz. 4 8 16 32
a 0 AO 0 .60

3013 3014 3015
3017.— Ditto, spherical, long-necked and ring top, tubulatures at
the side, of Bohemian glass.

3 1 2 gall.
$2.00 3.00 4.00 each.
3018.—Ditto, Florentine, French, plain, quarts. Each, .75
3019.— Ditto, ditto, Bohemian, with ground glass stopper in neck.
1 qt. $ gall. 1

$1.50 2.28 - 2.50 each.

OF CHEMICAL AND PHYSICAL APPARATUS. 151

3020.—Receivers, porcelain. 4 02., $1.25 8 oz., 1.50 each.
3021.—Ditto, earthen-ware, 4 gall. Each, $1.25

( ) 3027

3022 3023 3025 3029 3031

3022.—Reduction Tubes, of glass, with 1 bulb. Each ~— .20
3023.—Ditto, ditto, ditto, Dee é 30
3024.— Ditto, ditto, ditto, 3.6 ‘“ 50
3025.— Ditto, ditto, ditto, 1 ©“ bentend. “ 25

3926.—Ditto, ditto, porcelain, for reduction by hydrogen. “ 1.25
Reflectors. See Parabolic Reflectors.

3027.—Retorts, plain glass, single tube, best Bohemian glass.

BOM eed a ho oes ek gall? 32 Bee

a0. +20 ° 30...40 * 457.60 90 $2.25 3.50 6.00 each.
3028.—Ditto, ditto, ditto, with double tube, Liebig’s.

8 oz., .80 16 0z., $1.00 each.
3029.—Retort Glass, plain Bohemian, two bulbs in the neck,
for preparing oxygen gas from red oxide of mercury.

.

2 em 6 02.
i= 280 3d Od each.
3030.—Retorts, glass, light, French tubulature, without stopper.
EF OZ,50< 2 02Z., .15 each.

3031.—Ditto, ditto, Clark’s, plain, with ie receiver. Each, .50
3032.—Ditto, ditto, Hemades ©:

3033 < 3034
3033.—Ditto, ditto, best Bohemian, tubulatured and stoppered.

202. 4 8 16 ~ 32. 4:gall 7 3 4 9 7
3d 40 50 565 .70 $1.20 1.50 3.50 4.50 7.00 9.00 each.

152 EK. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

3034.—Retorts, porcelain, best, glazed inside, tubulated and stop-

pered.
4 8 16 oz.
$1.40 1.65 1.90 each.
3035.—Ditto, ditto, detached heads. Each, $1.50
3036.—-Ditto, glass, Qonnn for micro-chemical operations, plain,
assorted sizes. aot N, Per doz., $2.50
3037.—Ditto. tubulated w~ .. bpered. “ - 3.50

Retort Powmsler ‘See Funnels.
3038.—Retorts, stoneware.

4 8 16 32-02.
$1.00 1.25 (1.50 2.00 each.
3039.—Ditto, iron, loose cover.
4 1 2 3 4°28 > AO pte

$2.75 3.00) 3.75 425 5.00 6.50 10.00 each.

3045

3040 3053

3040.— Ditto, copper, loose heads, ground and fastened with clamp,
for making oxygen. 1 qt., $4.50 2 qts., 6.00 each.
304.1.—Ditto lead, for making hydrofluoric acid. Each, $5 to 25.00

3042.—Ditto, platinum, according to size.

Per gramme, 40 to .45
Ditto, holders. See Supports.

Revolving Electro-Magnet. ‘See Magnet.

3043.—Riders, of aluminum. Each, .75
Ring Burners, various kinds. See Burners.
3044.—Rings, concentric, sets of 7. 80

Ditto, of straw. See Straw Rings.
3045.—Roasting Dishes, according to size. Per 100, $7.50 to 10.50
3046.— Roasts, Plattner’s, used in quantitative analysis of metallic
ores before the blow-pipe. Each, $2.00
3047.—Roasting Charcoal, pieces. Per doz.,'.”.75-

OF CHEMICAL AND PHYSICAL APPARATUS. 153

3048. —Roasting Charcoal, forms for making, complete.
Per doz., $3.75
3049.—Rods, of glass, for electric excitation. Each, 1.00
3050.— Ditto, ditto, ordinary, assorted sizes. Per lb., .60
3051.—Ditto, ditto, extra large, Bohemian, or French, assorted sizes
Per tb., $1.00
Ditto, ditto, stirring. See 8!’ «ors.
3052.—Rod of Shellac, for resi ~ citation. 2.00
3053.—Rubber Balls. Small, $5.00 —_ large, 6.50 Per doz.,
3054.—Rubber Finger Tips, for protecting fingers in handling
acids and poisonous substances in the laboratory and in the
dissecting room; thin, and of the very best quality. Each, .10
3055.—Rubber, sheet, French, thin.

No. 8, .50 No. 11, .60 per oz.
3056.—Ditto, stoppers, American, solid.
Nos. 54 5 4 3 24 2 1

$1.50: 1.50 228: : 3.75 5.00. 6.00 9.00 per 100.
3057.—Ditto, ditto, of best French, flexible unvulcanizedgum, each
cork accurately conical and perfectly smooth, cast in my own
moulds, solid, 1, 2, and 3 holes.

ee oe EN eo Bi GeO BO kD or TP LD
08 .09 10 15 20 25 30 25 50 .60 .65 .75 each.

Or $9.00 per Ib.

x 1y'6 x lis

x 1+ x ty

x Ts: x }
‘ x is ke +3

Other numbers, sizes in proportion to above.

3058.—Ditto, ditto, ditto, in the form of Whipstock, to cut off, as

required. Each, $10.00
3059.—Ditto, Syphon Primers. See Rubber Tubing. « 1.50
3060.—Ditto, Urinals. “ 1.00

3061.—Rupert Drops. Per doz., .50

/

154 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

3084

3062.—Russian Spirit Lamps. Each, $2.00

Saccharin ters. See Polarization.

Saccharometers, See Hydrometry.

Safety Funnels. See Funnel Tubes.

Ditto, Lamps. See Davy’s. |
3063.—Salometers. | 6 ES
3064.—Sand Baths, cast iron, with handles 83 to 9 in. “ 2.23
3065.—Ditto, ditto, spun, best, French, deep, very stout.

4 5 6 7 in.
40 00 .60 .75 each.
3066.—Ditto, ditto, shallow.
: 2 3 4 5 6 in.
20 20 00 2 a 40 each.

3067.—Ditto, ditto, copper, 3, 4, 5, and 6 inches. Per inch, .10
3068.—Ditto, Glasses, for mariners, wood. .

15 seconds, $1.25 30 seconds, 1.50
3069.—Ditto, ditto, small, of wood, 3, 5, 16 minutes. Each, .50
3070.—Ditto, ditto, of brass, small, 5 minutes. ENA 5,
3071.—Saw, small, with cocoa handle. 7 5

3072.—Seales, apothecaries, with brass beams and horn pans,
without pedestal. |

4 44 5 6 me 8 in. beam.
$1.40 1.50 1.85 2.10 3.00 4,00 each.

3073.—Ditto, ditto, with brass pans.

4 5 6 in. beam. '
$1.00 1.25 1.50 each.
3074.—Ditto, ivory, for measuring the button in assay accurately.
| ° | Each, $5.00
3075.—Ditto, prescription, various. 5.00 to 20.00

3076.—Ditto, small, in tin boxes, with weights. Each, 1.25

pees +

- 3086. —Scorifying Moulds, of cast

OF CHEMICAL AND PHYSICAL APPARATUS. 155 -

3077.—Seales, prescription, in morocco cases. Each, $1.25
3078.—Seale Pans, of horn, adjusted with silk cord. :
Nos. 1 2 3 4 By) 6 7 8 9
Diam, 13 .:2 2 Se eemee § 44 44 B54 in.
Price, ~.40°°50 65 .75- .90'-$1.25 1.45. 1.75 2.00 each.
See also Balatices, page 17. ‘ 2
3079.—Schuster’s Dropping Flasks, stoppered. Each, .25:

1
2
D

30S8S0.—Scissors. Each, .50 to $1.00
3081.—Ditto, tinsmiths’, for cutting metals. ks 2.50
3082.—Scoops, of horn. ff 12
3083.—Scorifiers, Freiburg usual form. Per 100, 3.50
3084.—Ditto, ditto, urn shape. «“ 20.00

3085.—Ditto, holders, of iron, with 9 partitions, for holding scori-
fiers, when various assays are under examination together.
Each, $1.50:

- jron, with 9 small round cavities
_ Each, $1.00
Scorifier Moulds. See Moulds.

Ditto, Tongs. See Tongs. = ==\——
3087.—Scratch Brushes, or But-

ton Brushes, for use in assay, of 3086

hard bristles. Kach, .50
3088.—Ditto, Brush Wire, Per lb., $5.00

3089.—Scereen, of iron wire, to surround the Bunsen or spirit:
lamp, when burning under a tripod, to protect the flame from

currents of air. Each, $1.00:
3090.—Seérews, brass head. ss 10

3091.—Seidlitz Powder Cups, with partitions. . 60
Sets of chemical apparatus for beginners. See the back of
the book.
Separatory Bottles. See Bottles.
Ditto, Funnels. See Funnels.
3092.—Shades, Lilly, for covering rare objects. Each, $2 to 15.00

3093.—Sharpeners, for knives. ; 50
3094.—Sieves, brass, 10, 20, 30, 40, 50, 60, 80, 100 meshes to the

inch; 5 inches. Each, .50 to $1.25
3095.—Ditto, ditto, ditto, 7 inches. . te 9 to. ¢ 1.60
3096.— Ditto, ditto, ditto, 12 «“ “ 1.00 to 2.00

3097.—Ditto, horse hair. ‘é 1.2%

*

156 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

3098.—Sieves, silk bolting cloth, small, French.

3 4 5 6 in.

00 1d $1.00 1.50 each.
3099.—Ditto, box, Griffin’s, with two partitions. Each, $2.50
3100.— Ditto, Plattner’s, for use before the blow-pipe. “ 50
3101.—Silver, pure, for mineral tests. Per ounce, 3.00

3102.—Skins, Cat, for electrical excitation purposes. Each, 1.25

3103.—Ditto, Chamois, for handling brass apparatus. eee

3104.—Slips, of glass, with edges carefully ground, to prevent
cutting the hand, for the testing of small quantities of liquid
in quantitative analysis; also convenient for color test, 1x3 in.

Per doz., .75
3105.-—Ditto, of penne: porcelain, to try streak or color of
minerals. Per doz., .75 to $1.00

Smelling Bottles. See Pungents.
3106.—Soda Paper, for preparing cartridges in blow- -piping. 50
3107.—Soda Water, apparatus for making. $7.50

4

I

3108 3109 3110 711 712713 714 716

3108.—Sodium Spoon, for holding sodium in water unde
cylinder. 0
3109.—Ditto, Flame, apparatus for inverting. $3.50

Soufflets, cylindric, or glass-blowing table. See Glass
blowers’ table.
3110.—Spatulas, bone, with pointed handle.

4d in., .20 5 in., .25 each.
3111.—Ditto, with spoon.
4 54 6 in.
20 25 .30 each,
3112.—Ditto, bone, with double end. Each, .25

3113.—Ditto, and spoon, ivory, assorted, small. ie Te

OF CHEMICAL AND PHYSICAL APPARATUS. 157

3114.—Spatulas, of glass, 6 inches. Each, .15
$115.—Ditto, of brass, double end, 4 inches. 8 EO
3116.—Ditto, and spoon, of brass, adapted for weighing small
3 quantities. $1.25
3117.—Ditto, of horn. :
24 4 5 6 7 74 8 in.
LO 15 20 20 30 0 40 each.

3118.—Ditto, ditto, with spoon.

eR a ae. Be pe 8 Tl
de 9a. 9b 28) 95 BS 95 40! 480 each.

3119.—Ditto, platinum. Per grain, .3

fl
\)

f
fH}

f
]

3120 3121 3122 3123 3126 3128
3120.—Ditto, porcelain, with handle.
44 54 64 U4 84 in.
40 Ad D0 .65 70 each.
3121.—Ditto, ditto, square end.
114 144 174 in.
ato 90 $1.25 each.
3122.—Ditto, ditto, double.
114 143 17 in.
50 .60 4 .90 each.
3123.—Ditto, ditto, with spoon.
11 144 17 in.
Ob 20 $1.00 each.
3124.—Ditto, steel, double ends. Each, .25 to .75

3125.—Ditto, ditto, cocoa handle, length of blade—

3 4 So 8 7 8 9 10 in.
20 230 = .Bd 40 00 60 .80 $1.00 each.

3126.—Specific Gravity Bottles, plain, solid stopper, cut glass.

100 500 * 1000 grs.
$1.00 1.75 2.50 each.
3127.—Ditto ditto, ditto, ditto.
10 20 : 60 100 grams.

$1.25 1.50 1.75 2.00 each.

158 E. B. BENJAMIN'S DESCRIPTIVE CATALOGUE

3128.—Specific Gravity Bottles, perforated stopper, light blown
glass. ;

100 250 500 1000 grs.
1d $1.00 1.50 . « 2.00 each.

3129.—Ditto, ditto, ditto, ditto, in fine chamois-lined leather cases,
with counterpoise.

_ 100 250 500 1000 grs.
$2.50 3.00 4.00 5.00 each.
3130.— Ditto, ditto, ditto, ditto.
10 25 50 gram’s.
$2.50 3.00 4.00 each.

3131.—Ditto, ditto, ditto, ditto, in case, with fine chamois-lined
leather case, of cut glass, with solid stopper.

25 grams. $4.00 100 grams. 7.50 each.
S122 .—Ditto, -. : ditto, ditto, ditto.
100 500 1000 grs.
$3.50 4.00 4.50 each.
3133.—Ditto, ditto, ditto, with thermometer. 50 grm’s, 3.50
3134.—Ditto, ditto, Flasks, round, stoppered, 1000 grs. Ea. $2.00
3135.—Ditto, ditto, ditto, not stoppered, 1000 * $¢ 75
3136.—Spectroscopes, Browning’s, for direct vision, with five
prisms. Each, $15.00
3137.—Ditto, ditto, with cover, larger. : ¢ 18.00

3143 ; 3138 3147 3152

3138.—Ditto, ditto, “Heiaelberg laboratory,” single prism, with
2 lamps, millimeter scale, 2 stands, 3 scales on drawing
paper, 1 small chart and an assortment of platinum holders
for the salts, complete. Each, $65.00
3139.—Ditto, Browning’s elegant “ model,” two prisms, in a highly
polished mahogany case, with lock and key, and handle to carry
it, having a swivel arrangement for the telescope, so that the

Pe ad Te CR els) Ree Se ie PRR TA Nth eS ho oi em Bese pw AEE fea, ee Ph ae Mee nee ee
ee SY eae ‘aot Cee s ea Core Bs ese Se Ra he eee eae EEA, Ri indo Go Dato ae RL Se A
Xs ot ra . ae : ¥ See eh ‘ J. : i Dot fi « Shek: b E

eo } Ao
‘ Lom

“4
x a

~

OK CHEMICAL AND PHYSICAL APPARATUS. 159

spectrum may be extended and clearly defined, with tangent
screw motion. It will widely separate the D lines. Ea. $160.00 -
~ 3140.—Spectroscopes, larger; imported only on special order.
Spectroscopic Charts. See Charts.
3141.—Ditto, Lamps, for evaporating metallic substances. Ea. $3.50
3142.—Ditto, Stand, for holding salts in lamp flame. 1.50
3143.—Ditto, Lamp and Stand together. 45
31434.—Ditto, ditto, for alcohol. 2.50
Ditto, Support. . See Supports.
3144.—Spectrum, Browning’s lantern arranged for showing

on screen, small size. $50.00
$145.— Ditto, large size, complete. 150.00
Spirit Lamps. See Lamps.
3146.—Spiral, or Spotted Tube. $3.00 to 5.00
3147.—Spoons, Blow-pipe, of iron. Each, .25 to .50
3148.—Spoons, bone.

24 5 6 in.

10 20 .25 each.
3149,.—Ditto, brass, turned, for weighing powders. Each, $1.25
3150.-— Ditto, tea, of glass. Per doz., 1.50
3151.—Ditto, dessert, of glass. Each, .40
3152.—Ditto, table, « «6 50
3153.—Ditto, dipping, ladle form, of glass. 635) S00
3154.—Ditto, horn, first quality.

3 6 7 8 9 in.
: 18 2d 30 ao .50 each.
| 3155.—Ditto, horn, ordinary.
5 54 " "4 8 in.
Ab 18 20 25 .380 each.
And wide bowl, 74 in., .40.
3156.—-Ditto, iron. Each, .40
$157.— Ditto, porcelain.
52 Y 2G gt 134 in. ;
30 0 60 MY 3) $1.50 each.
3158.— Ditto, tea, porcelain. Per doz., $3.00
3159.—-Ditto, ditto, ditto, perforated, for dipping crystals or
leeches, oval. Each, .50 ©
3160. -~Ditto, ditto, ditto, ditto, round. se. 60°. 3160

$161.-~Sticks, of prepared coal, for breaking glass. Per doz., .60
3162.-~Ditto, ditto, ditto, ditto, larger. be 20

ee ee ee Pane eee Bae a fe Lt Pr ene Cea oe
* TA. Sy
q a patie ot ete

160 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

3177 3178

3181 3176 ‘
3163.—Stills, of copper, with worm, tinned.
1 2 3 galls.
$12.00 15.00 20.00 each.
$164.—Stirrers, of glass, ends polished.
6 9 12 in.
30 Ad .60 per doz.
3165.—Stool, insulating. — $5.00

3166.—Stop Cocks, of brass, mounted on foot, with double ends,
for tubing, with screw knobs, for securing to table. Each, $1.50

3167.—Ditto, ordinary. é< 1.25
3168.—Ditto, with double ends, for tubing. ‘<6 1.25
3169.— Ditto, one end for tubing, 1 male screw. 6s 1.25
3170.—Ditto, double male screw. é< 1.25.
3171.—Ditto, ditto, female “ Pe 1.25
3172.—Ditto, male and female screw. sé 1.25

3173.—Ditto, brass, one end for tubing and one for inhaling. Ea. 1.06
3174,.—Ditto, earthenware, English.

43 in. long, $3.00 93 in. long, 4.50 each.

3175.—Ditto, ditto, French.

UF 9 10 12 15 in.

$2.50 3.00 4.00 5.00 6.00 each.

3176.— Ditto, glass, for vinegar and acids, small. Each, 1.25
3177.—Ditto, ditto, Geissler’s, of glass, for connections. “ 1.50
3178.—Ditto, ditto, heavy. a Oe
3179.—Ditto, for gas generators. “125 |

3180.— Ditto, Deleuil, of silver, for assay, by the wet way. “ 30.00

OF CHEMICAL AND PHYSICAL APPARATUS. 16%

3181.—Stop Cocks, brass, for Marsh’s arsenic test. Each, $1.50
3182.—Ditto, one end bent and the other end ground, for fitting

tubulatures, of glass, Kach, $1.25

3183.—Ditto, of glass, one end enlarged to receive a cork. “ 1.25
_ Stoppers, caoutchouc. See Rubber.
3184.—Storm Glasses, plain. Af 1.00
3185.—Ditto, with thermometer. ae 2.50
3186.—Stoves, gas, small vulcan. e U5
31864.— Ditto, ditto, larger.
Nos. 1 ; 2 3
$1.25 1.50 1.75 each.

3187.—Ditto, Kerosene. No. 3, $5.00 No. 4, 6.00 each.
3188.-—Ditto, ditto, with boiler, for heating purposes. Each, $4.50.

3189.— Straining Baskets, porcelain, with handle on the
side. Each, $3.25
3190.—Ditto, with handle on the top, shallow. 6 3.00
* 3191.—Ditto, ditto, deep. fe ew

3192.—Ditto, earthenware, with handle on the side.
Each, $2.00 to 3.00

3193.—Ditto, with handle on top. «2.50 to 3.50
3194.—Straining Dishes, porcelain, perforated for crystals, flat
bottom.
" 9 104 12 ins.
0d $1.00 1.25 1.50 each.
3195.—Ditto, porcelain, round bottom, large size, glazed inside and
out.
13 in., $3.50 154 in., $4.50 each.
3196.—Ditto, porcelain, with handle on each side, holes small, 6 in.
diameter. y Each, $1.00
3197.—Ditto, porcelain, small hemispherical, with handle on one
side.
No. 1, $1.25 No. 2, .75 each.
3198.—Ditto, Plates, French, with rim around the top.
: 20 25 30 ce.
Oo A0 00

3199.—Straw Rings, French plaited, for supporting round bot-
tom yessels, dishes, flasks, retorts,
3 34 41 54 < 9 in.
, 28 20 22° 27 35 40 each.
Suction Tubes, for filling bulbs, etc., see Filling Tubes.
3200.—Supports, for potash bulbs, with hooks. Each, $1.50

162 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

j
3202
3201.—Supports, for objects in lamp flame. Each, $1.50
3202.—Ditto, for burettes, of brass, of light iron base, and clamps,
with cork. lining for two burettes. Each, 3.50

3203.—Ditto, of brass, new style, with porcelain foot for two
burettes, for micro-chemical purposes, the holders shaped to the
burette, and nicely cork lined. Each, $5.00

=4(]

=)
Sra
ec

=e)

=s

ig SeeESE ie aes

SF

Se
7,

en hu an
| : all
' Bl; gl
an ’ i al; i
at el | 3
Bil ae a
vi vauneaauananvinaty (0) Wilfinimmmnny
dD Y M 5
RS Ki ie
ep Fee Ul ye Fe
1

3206 | 3207 3208
3204.—Ditto, of brass, for two burettes, spring clamp, with cork
lining, and fine oiled black walnut foot. $4,00

OF CHEMICAL AND PHYSICAL APPARATUS. pa aes

3205. —Supports, of iron, for two burettes, cork lined clamps
wach, $3.50
3206.—Ditto, ditto, of soft wood, with cork lined jaws, for
$1.25 : 2 burettes, $1.50 3
3207.—Ditto, ditto, with round wooden foot, with clamps, hinged
and cork lined, for

“4 $3.50 - 6 burettes, $5.00.
3208.— Ditto, ditto, revolving, of highly polished pear wood, for
5 8 12 burettes, ?
$4.50 5.00 6.00 each.
3209.—Ditto, for burettes, revolving, japanned tin, with base and
staff, of walnut. 8 burettes, 4.00 each.

3210 3215 3218

3210.—Ditto, ditto, pear wood, = square porcelain base, with brass
staff. 6 8 >. 12 burettes..
$5.00 6.00 7.50 each.

9211.—Support, Hoffman’s, meN) with four Bunsen’s burners, of
highly polished brass. $8.00

164 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

3212.—Support, Mischterlich’s, for the examination of fluids un-

der the spectroscope. y5O
$213.—Ditto, earthen, for crucibles, or “ fromages.” 20
$214.—Ditto, porcelain, for small dishes. 25
$215.—Ditto, Table, including fork and drying tripod.
6 9 12 134 in. high.
75 $1.00 1.25 1.50 each.
3216.—Supports, or Filter Stands, for single funnel. Each, $1.00
3217.—Ditto, or ditto, for two funnels, single arm. “<6 1.25

3218.—Ditto, ditto, for six funnels and double arm. re 1.25
3219.—Ditto, or Filtering Stands, to cover beaker, according to

Fresenius. Each, $1.25
3220.—Ditto, with large wooden ring. te a ee
3221.—Ditto, with two wooden rings. “« 1.50

ete

eros cringe

peew=sstaat UTS ANDALULL

3229 2236 3237
3222.—Ditto, of iron, with triangular base arranged for holding
spirit lamp. Each, $1.50
3223.—Ditto, Hoffman’s, with wood-lined rings. fe 245
$224.—Ditto, wood, for sustaining tubes and connecting apparatus,
black varnished wood, Griffin’s form, 314. Each, $1.75
3225.—Ditto, ditto, ditto, ditto, mahogany. € 2.00

3226.—Ditto, Test tubes, for 13 tubes. of oO

OF CHEMICAL AND PHYSICAL APPARATUS. 168

3227.—Supports, Test tubes, polished mahogany, with pins, for
draining. Each. $1.50
3228 .—Ditto, litto, for 18 tubes. Ro Og

3229.—Ditto, ditto, mahogany, with drawer and draining pins.
Hach, $2.06

3230.—Ditto, ditto, universal, circular. 6 Oe
3231.—Ditto, ditto, japanned tin, for six test tubes, Each, .60
3232.—Ditto, for retorts, wire, two rings. 400
3233.— Ditto, ditto, iron, Ke “ $1.00
3234.—Ditto, ditto, “« three rings. 1S FDS
3235.—Ditto, ditto, brass, es with pereelain foot. “ 4.50
3236.—Ditto, ditto, of wood, Gay Lussac form. «1,25
3237.—Ditto, ditto, is Shellbach, round iron base, two

joints and sliding clamp. Each, $2.00
3238.—Ditto, ditto, iron base, two joints and sliding clamps,

polished. Hach, $2.50

3239.—Ditto, ditto, French, upright. “f 1.50

3247
3240.—Ditto, ditto, universal. e 2.00
3241.—Ditto, ditto, |“ fine quality, heavy. e+ 350
3242.—Ditto, ditto, |“ highly polished, pear wood. “ — 4.00
3243.—Ditto, feet of porcelain, round. as 50
3244.—Ditto, japanned, for flasks in Bunsen’s quick filtering
apparatus. : : Each, $3.50

Supports, other forms made to order.
3245.—Stand, of iron, with polished fork, Hoffman’s. “ 1.50
3246.— Ditto, st wood, with fork, small. és 15

i Viet Ee EF nD a ge OE RE ST ER Ree ime I ERT ee lk OEP” SA OAT? fo We Wa a gee AD eee AR OTG ROS OR Ae ee A ae ae Lt
¢ ey ' ¥ fp Ary ¥ sf mt wee i oh ASI, VP Tee At eed PAS 1% * ae st" het,
2 ; ee pe kee Oe Ba es IOS Re Pee CS Ps ee ip Ere shay Pe ft oe te eee RRS 3

166 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

Swimmers. See Burette Swimmers.

3247.—Syphon, glass, plain. 12 in., .25 15 in., .30 each.
Ditto, Acid. See Acid Syphons.

$248.—Ditto, pipette, glass, new style, various. Each, .75

3249.—Syringes, glass. Each, .50 to $1.50

3262
3250.— Ditto, metallic, male, in mahogany cases. Each, $4.00
3251.—Ditto, male and female, & : S500
$252.—Ditto, Fire, of glass. - 6.00

Ditto, brass. See Air Pumps.
3253.—Tank, for holding solutions when under examination by
the Lantern; consists of two glass plates, separated by rub-

APE OT Be

ber partition which forms the wall of the tank, on three.

sides. $3.50
3$254.—Tantalus Cup. 2.00
3255.—Tapers, wax, in small boxes. Per box, .25
3256.— Ditto, ditto, to burn in oxygen, ete. Per pair, .20

3257.—Telescope, with mounting support, on legs, made by the

celebrated Merz, of Munich, in leather case, achromatic, power

50 times. $30.00
$258.—Telegraph, working model, with reel. 8.00

Telegraphic Apparatus, other, special to order.

3259.—Tellurian, for showing the phenomena of the seasons.
$13.00
Test Chests. See Reagent chests.

Tests, blow-pipe cases. See Blow-pipe Cases, etc., at the
end of the book.

; ‘ |
OF CHEMICAL AND PHYSICAL APPARATUS. 167

3260.—Test Dishes, porcelain, for colored precipitates. Each, .25

$261.—Ditto, Glasses, conical, on foot, without lip. 6° A
3$262.—Ditto, ditto, French, ditto, ditto, with lip.
4 1 2 4 8 16 07,
15 18 25 30 40 50 each.
$263.-—Ditto, ditto, micro-chemical, of thin glasss, very small, made

by blow-pipe. Per doz., $1.75

3264 3266 3269 3271 3272 3273 3274

3264.—Test Lead Measure, Plattner’s. Each, .50
3265.— Ditto, ditto, Sieve, brass, Plattner’s. ea

Test Metals. See Minerals, at the back part of this book.
3266.—Test, Marsh’s, arsenic. "5
3267.—Test Papers, assorted. Per sheet, .5

3268.—Test Tubes, infusible Bohemian glass, 6 x ? in.
Per doz., $1.25
3269.—Ditto, French and German, with the ends even thickness
throughout ; free from lead.

3 4 3 6 iO PO is LON R.:
ys to 3 2 to 4 to % to 3 1 12 1} in. wide about.
30 40 50 60 .%5 $1.50 2.25 per doz.

Each one of the above Test Tubes is carefully wrapped in paper, to keep them
from chemical contact, and to preserve the lips from breakage. The diameters
are averaged.

3270.—Ditto, in nests of
3 6 9 16

20 | 30 0 -70 each.
3271.—Ditto, with pasteboard cases, in nests of
6 9
AO .60 each.

3272.—Ditto, on foot.

14 2 + G 8 in
40 45 60 — $1.00 1.25 per doz.

168 E. B. BENJAMIN'S DESCRIPTIVE CATALOGUE

3273.—Test Tubes, stoppered, 5 in. ey Per doz., $1.25
Test Tube Brushes. See Brushes. |
3274.—Ditto, Holders, wood, new form. Kach, .20
3275.—Ditto, ditto, brass, with sliding band. “50
3276.— Ditto, ditto, “ ‘wood handle. “< 60
3277.— Ditto, ditto, wire, with wood handle. “50
Ditto, ditto, and supports. See Supports.
3278.—Testing Slab, plain, of porcelain. 1 BO

3279 3281
3279.—Theatre Pantin, with glass pillars, for dancing figures.
$15.00
3280.—Thermo Electric, pair of bismuth and antimony. $2.00
3281.—Ditto, ditto, Pile. Each, $30.00 to $35.0

3282.—Thermometers, Axillary. 6 in., $2.00 7 in., $3.00 each.
3283.—Ditto, Beer, accurately registered, Fahrenheit and Cen-

tigrade. Each, $2.00 |
3284.—Ditto, chemical, § in. long, up to 212 deg. Fah., paper scale

in glass tube, and pasteboard cases. Each, .85
3285.— Ditto, ditto, ditto, ditto, 10 in. long. 390
3286.—Ditto, ditto, ditto, ditto, 12 “ «“ $1.00
3287.—Ditto, ditto, ditto, ditto, 15 “ «1.20
3288.—Ditto, ditto, ditto, ditto, up to 260 deg.

12 in. long, $1.25 3 15 in. long, 1.25 each.

The largest thermometers are smallest iv. diameter.
3289.—Ditto, ditto, Celsius paper scale, 50 to 100 deg. Hach, 1.50
3290.— Ditto, ditto, Celsius, or Centigrade, up to 350 or 410 deg.

Each, $2.00

- OF CHEMICAL AND PHYSICAL APPARATUS. 169

3291.—Thermometers, Chemical, Milk scale, Fah., enclosed in
glass tube, graduated up to 212 deg. Each, $1.50
3292.—Ditto, ditto, ditto, ditto, running from 280 to 330 deg.
i 2 Each, $1.75
3293.—Ditto, ditto, ditto, ditto, ranning from 400 to 640 deg.
Each, $2.00
3294.—Ditto, ditto, ditto, ditto, running up to 660 and 800 deg.
| Hach, $2.25
3295.—Ditto, ditto, ditto, Fah. and Reamur, up to 700 deg. “ 3.00
3296.— Ditto, ditto, ditto, engraved on the tube, Centigrade or

Celsius, up to 100 deg. Each, $2.25
3297.—Ditto, ditto, ditto, up to 200 deg. a 2.50
3298.— Ditto, ditto, ditto, up to 360 “ % 3.00
3299.—Ditto, ditto, ditto, Fah., up to 200 deg. 6s Q25
3300.—Ditto, ditto, ditto, ditto, “ 400 « a 2.50
3301.—Ditto, ditto, ditto, ditto, “ 600 “ + 3.00
3302.-—Ditto, ditto, ditto, ditto, above. ‘CUS BO
3303.—Ditto, ditto, ditto, ditto, double scale, large, with brass top

Fahrenheit, 300. Each, $3.00
3304.— Ditto, Differential, Leslie’s. ; $2.50 to 4.00
3305.——Ditto, ditto, ditto, having two limbs, jomed with tightly

fitting ground glass stop-cock. Each, $4.00
3306.——Ditto, Day and Night, glass. oa
3307.—Ditto, House, in mahogany, Fahrenheit and Centigrade,

French spirit. Each, .40
3308.—Ditto, ditto, ditto, japanned tin, Fahrenheit.

6 9 12 in.
0 20 $1.00 each.
3309.—Ditto, Medical, for ascertaining heat of the human body,
during fever or otherwise. Each, $5.00
3310.—Ditto, Metallic, watch form, silver case. << -20.00°
3311.—Ditto, ditto, revolving, for pocket, Fahrenheit and Centi-
grade, German silver case. Kach, $10.00
3312.—Ditto, Sugar-house, French, accurately graduated, I*’ahren-
heit and Centigrade. Each, $10.00
3313.—Ditto, Window, Milk glass, silvered, etc., Fahrenheit,

Celsius, and Reamur. Each, $1.00 to $5.00

3314.—Thermometer Tubes. Each, .25

3315.—Thieves, for drawing or decanting spirits, glass. “ —.74

eee a Xoo tee ce ee went oar ee rae eee
fas axey Sy meget iat Oey sae ee
rae 4 : Chee er ae Bde hoon
ay = pot gee Sa ee din

170 E. B, BENJAMIN'S DESCRIPTIVE CATALOGUE
3316.—Thunder House, mahogany. Each, $8.00
3317.—Tin Foil, for blow-pipe experiments. Per square foot, .15

3318.—Tissue Figure. $1.50

NUIT
MN

3319 3320 3323
3319.—Tongs, coal.
13 14 174 in.
$1.25 1.50 1.75 each.

3320.— Ditto, ditto, ditto, heavy, with twine wound handles to pro-

tect the hands from frost in cold weather. Each, $1.00
3321.—Ditto, crucible, 6 in. japanned iron. " 50
$322.—Ditto, ditto, single bend steel, 9 in. Ae 66 1.00
3323.—Ditto, ditto, double bend. « 1.25
3324.—Ditto, ditto, ditto, German silver. sc 1.50
3325.—Ditto, ditto, ditto, nickleized. 6 2.25

3326.—Ditto, ditto, steel, with heavy platinum points, double bend.
. Each, $6.00
3327.—Ditto, ditto, German silver, with heavy platinum points,
double bend. » Kach, $6.50
3328.—Ditto, ditto, steel, with large double bend. EO
3329.—Ditto, wrought iron, for sand crucibles, with ditto. “ 1.75
3330.—Ditto, for lifting crucibles vertically, extra heavy. “ — 2.00
3331.—Ditto, ditto, French, double bend, 14 to 18 inches long.
Each, $1.50
3332.—Ditto, ditto, wrought iron, single bend, heavy, for handling
sand crucibles. Each, $1.00 to $1.25
3333.—Ditto, cupel, bent in the ends, of steel, to surround the
cupel, Each, $1.50

OF CHEMICAL AND PHYSICAL APPARATUS. 171

3334.—Tongs, cupel, of galvanized iron, single bend. Each, $1.50
3335.—Ditto, ditto, straight. i 1.50
3336.—Ditto, ditto, French, bent on the end, with strap “ 2.75

Te

|

rt
e 4!

PUETVERPMMU LAUER ER ica O00)

uu uu
RTL NOLO NOT DPE OOOO CONT O OT NTT I

PUTTER

|

3329 3330 3331 Jdd32 3333 3334 3335

3337.—Ditto, Scorifier, one limb to fit around the scorifier, and
one to fit over it, so that it can be moved in and out of the
cupelle furnace very steadily. - Each, $1.25
Tools for Blow-piping, in chests. See Blow-pipe Apparatus
at the close of the book.
3338.—Torricellian Experiment. $4.50
3339.—Touries, or Carboys, with 2 necks and tubulature near
the foot, of French earthenware, for the distillation of acids, ete.
60 litres, $12.00 100 litres, 15.00 each.

3340.—Ditto, connecting pipe, for above. Each, $1.50

3341.—Ditto, of German stoneware, glazed outside, 200 litres.
Each, $50.00

3342.—Ditto, stoneware connections, for ditto. é 5.00
3343.—Ditto, set of 2, with connecting pipe. , 1.00
3344.—Trays, lead. _ } Each, .50

$345.—Ditto, shallow porcelain, for holding jars containing cor-
rosive liquids. Each, .20 to .40

3307

3302 3353 3356

3343 3360

3346.—Trays, walnut, with partitions, for batteries. Each, $1.50
3347.—Trellis Top, fox furnace, of gauze wire. 2 oe
3348.—Triangles, of glass. sf 30
3349.—Ditto, Plattner’s Blow-pipe. 025
3350.— Ditto, ditto, porcelain. ¢ 50
3351 .—Ditto, ditto, wire. Per doz., .60
Trimming Hammers. ‘See Hammers.
3352.—Tripods, of galvanized iron, for gas burner. os 7.00
3353.— Ditto, ditto, brass, for spirit lamp. . (900
3354.—Ditto, of wrought iron, with two concentric rings. Ea., 1.00
3355.—Ditto, ditto, ditto, with 7 concentric rings. “9.00
3356.— Ditto, of iron, triangular shape, sets of three. 1.75

3357.—Ditto, ditto, singly.
Smallest, .50 Medium, .60 Largest, .75 each.
Tubes, Arsenic, Chloride of Calcium, Combustion, Con-
densing, Communicative, Gas, etc. See respective heads.

OF CHEMICAL AND PHYSICAL APPARATUS. 1%3

Tubes, delivery. Per doz., $1.50
Ditto, drying. | Each, .50
Ditto, filling. oO
Ditto, julep. Per doz., .50
Ditto, for Liebig’s condenser, ordinary size. Each, $1.00
Ditto, ditto, ditto, 6 ft. 6 3.00
3358.—Ditto, for musical sounds. “s 0

-— 3359.—Ditto, containing phosphorescent substances, in cases, $3.00
and in frames, $5.00.
3360.—Ditto, sealing, for receiving substances, the neck being

afterwards closed by lamp flame. Per doz., $2.00
3361.—Ditto, spiral electric. Each, 3.00
3362.—Ditto, T large, of thermometer tubing. “. -7,00

3363 3364 3365
3363.—Ditto, 3 way, small, made of eatinaey glass.
3364.—Ditto, U,

6

9 10 in.
2d O00 .60 each.
3365.—Ditto, ditto, 3 bulbs, small. hae
3366.—Ditto, ditto, ditto, large. i. One
3367.—Ditto, ditto, ditto, wide, with large bulbs. 5 oO
3368.—Ditto, ditto, Bohemian, with draining tube in the middle,
long. Each, .75
3369.— Ditto, ditto, with ieee ee ee
3370.— Ditto, for vaccine. Per hundred, $5.00

3371.—Ditto, Specimen, perfectly round bottom, extra heavy
glass, to bear corking.

Hs REe. 428. 25d) 9 RE. 2x 8 in,

25 30 0d 40 43 per doz.
24x4 3x4 4x2 4x4 4x2 44x Zin.
45 48 00 0d .60 .65 per doz.
5x4 dx 6x1 in.
Wd 80 $1.00 per doz.

174 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

3367 3371 | 3372 3373 33784

33%72.—Tubes, Vogel’s modification of Woulff’s apparatus, a sub-
stitution for Woulff’s bottles by insertion into the neck of an

ordinary bottle. $1.00
3373.—Ditto, ditto, with funnel tube. 1.25
3374.—Tubing, barometer. Per lb. °75
3375.—Ditto, capillary, 3 ft. length. Each, .06
3376.—Ditto, colored. Per lb. $2.0

OO0ce

QOO000 00 0%

3377.—Ditto, soft Bohemian, French and German. Per |b.,'-75
3378.—Ditto, ordinary soft glass, according to quantity.

Per lb., .50 to .60

3379.—Ditto, single up to + in. bore. Kach, .10

3380.—Ditto, of hard glass, from pure silicates, entirely free

from lead, manufactured expressly for making combustions in

organic analysis, of genuine Bohemian glass and no other,

4 to 3 in. Per lb., $1.00

3381.—Ditto, hard, free from lead, 4 to 2 in. ot ae

3382.—Ditto, glass, white, of large bore. te Lee

List OF

Numbers, Diameters and Yards ‘Per Pound

OF DIFFERENT SIZES OF

COPPER WIRE,

ACCORDING TO THE BIRMINGHAM WIRE GAUGE.

——

No. Diameter Yards No Diameter Yards “No Diameter Yards
; in er ‘ in er | Y in er
_=&B.W.G. Inches. eacia: B.W.G. Inches. ‘ec B.W.G. Inches. Sound.
10 | .134 | 6.007 || 19 | .042 | 62.98 || 98 014 | 569.5
11 -120 7.646 20 -035 89 . 86 29 .013 651.3
12 -109 9.705 21 -032 108.5 30 .012 771.6
13 -095 - 13.49: 22 -028 141.7 31 .010 1111
14 -083 17.36 23 -025 176.1 32 .009 1371
15 -072 22 . 67 24 022 229 .6 33 .008 1736
16 -065 26 .29 25 - 020 wets 34 .007 2267 if
17 .058 33.03 26 | .018: 342.9 35 005 4444 i
18 -049 45.83 27 -016 434 36 -004 6944 a
ae LTO

; a Sith the hetad usher, of lhe wthu 4 .
— tualing Uhal it will be faund useful on a

“ : the seteoleon tiuote articles td Way ee | ie 4

a lf Poiewh fe cnuesligalrens j

As the number of Catalogues issued is limited, please preserve this Copy.

Tat Senet etennanemnesnennsenanesene

176 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

3383.—Tubing, Earthen, 1 inch bore. Each, $1.50
3384.—Ditto, Porcelain.
+ in. bore, 14 in. bore, 30 in. length.
0d $1.50 each.

3385 3394
3385.—Ditto, ditto, with flanged ends.
2 1 2 in.
$1.00 1.50 2:25.
3386.—Ditto, Rubber, black or unvulcanized.
4 6 4 in.
20 25 .30 per foot.

3387.—Ditto, ditto, vulcanized, lengths cut to order.
bE OF a ee
oOo ABS ID ROP RR: 4.80) = 88 Der t606.
3388.—Ditto, ditto, ditto, full pieces.
6 d 3 4 2 in.
08.02 10 a2 Ap 0. Hh per Took
3389.—Ditto, ditto, ditto, heavy, + in. 25, .%« in. 30 per foot.
3390.—Ditto, rubber, extra heavy, barometer, to stand a heavy

pressure, assorted sizes. Per lb. $2.00
3391.—Ditto, thermometer. 6 15
3392.—-Turmeric Paper. Per sheet, .05
Twaddle’s Hydrometer. See Hydrometer.

3393.—Twine Boxes. Each, $1.00
3394.—Tourmaline Pincers. Each, $9, 10, 11, 12
3395.—Twine, small, colored. Per lb. $1.50
3396.—Upeast and Downeast Draught, model of, in glass,
Hach, $5.00

3397.—Urinals, male, of glass. € 25
3398.—Ditto, “ of rubber. 6 50:

5 tee ‘ :

a ths Nei! Kage: FP me
ea.

ee De ee re Ne as Bae
ae oe A ey ae ee 7 { BY ix ‘ ‘
bn 7 ~ -

x

OF CHEMICAL AND PHYSICAL APPARATUS. 177

3399.—Urinals, female, of glass, Each, .25
Other articles under this letter. See their respective head-
ings in the Catalogue under other titles.
3400.— Vases, large glass, with flaring top, capacity 2 gallons, for
holding sponges, etc. Each, $2.50
3401.—Vapor Index, Lippincott’s.
3402.—Vases, earthen, French, flat bottom, for silver and other
solutions held in acid, 10 galls., Kach, $12.00
3403.—V Tubes, for condensing limb, 7 ins. long and ? in. bore.
Each, .50

3404.—Vials, Homeopathic, 1 drachm .15, 2 drachms .20 per doz.

3405.—Ditto, Sample, of fine white French glass, for the preserva-

tion of samples; 4 oz. capacity. Per doz. $4.50:

Vogel’s Gas Bottle. See Woulff’s Tubes.
3406.— Washing Bottles, Faraday’s.

8 02. pts. qts.
60 VD .yQ each.

3407.—Watch Glasses, French, used in pairs, or singly as covers
to beakers.

1 14 14 2 Qh of din
AD 50 5B YS $1.25 ~=——«1.50 2.00 per doz.
3408.—Ditto, Bohemian, ditto, ditto, ditto, ditto.
24 3 34 4 4h | 5 in.
$1.65 2.25 2.05 3.25. 8.75 4.50 per doz.

Ditto, ditto, holders. See Holders.
3409.—Watch Springs, for burning in oxygen. Per doz. .30
3410.—Water Baths, copper, with 3 concentric rings and spun

bottom.
5 dF 6 in.
‘$2.00 2. 50 3.00 each.
3411.—Ditto, ditto, ditto, nickleized.
5 54 6 in.
$2.50 3; 00 3.50 each.
3412.—Ditto, copper, of extra large size, $4.50
to $10.00.
$413.—Ditto, porcelain.

4 6 8 02.
$1.25 1.50 2.00 each. a a
$414.—Ditto, ditto, with handle on side. Each, $1.00
3415.—Water Hammer. 1S
3416.—Ditto, ditto, singing. 1.00

\

ee eee boa

178 E. B, BENJAMIN’S DESCRIPTIVE CATALOGUE

H. TROEMNER’S STANDARD WEIGHTS. .

Weights, either gramme or grain, in French polished boxes
lined with velvet, every piece fitted separately. Brass weights lac-
quered ; the fraction of the gramme are platinum, except below 20
milligramme, which are made of aluminum. Adjusted to the utmost
accuracy. Special weights furnished to order.

3417.—Weights of Precision, in fine velvet lined polished

block, 1 platinum gramme to 1 mili. $6.00
3418.—Ditto. 1 i o jy mili. 7.00
-3419.—Ditto. 10 gramme to 1 mili. 7.50
3420.—Ditto. 10 “* qty mili. 8.50
-3421.—Ditto. 50 . 1 mili., 8 riders. 10.50
$432.—Ditto.. 100. e ? 12.00
3423.—Ditto. 100 “ zis mili., 3 riders. 13.00
3424,.—Ditto. 200 “ 1 mili. — 16.00
3425.—Ditto. Gold Assay Weights. 7.00

All riders weigh 10 mili., unless otherwise ordered.

3426.—Assay Ton Weights, 4 A. T. to sy A. T. "$6.50

(The assay ton weights have been introduced by Dr. C. F. Chandler, of the School
of Mines, Columbia College, New York, where they are in use for convenience in
the assay of ores. The weight denominated by Dr. Chandler ‘‘One A. T.” equals
29,1666 grammes, and contains, consequently, as many milligrammes as there are
troy ounces in,a ton avoirdupois of 2,000 lbs. Therefore, if One A. T. of ore assays
1 milligramme, the ton containg, of course, 1 ounce troy.)

3427.—Weights, 10 platinum grains to +1; grain. $5.00
3428.—Ditto. 48 ‘s chy grain. 6.00.
3429.—Ditto. UR en k aver grain. - 7.00

3430.—Ditto. 100 grains to ;1, grain. 7.00

é
a
3
’

OF CHEMICAL AND PHYSICAL APPARATUS, 179:

3431.—Weights, 1000 grains to +, grain, 3 riders. $10.00
3432,.—Ditto. 1000 grains to ;4, grain, 3 riders. ~ 11.00
3433.—Ditto. 1000 grains to ;,;455 grain, 3 riders. 12.00
3434.—Ditto. 4 oz. troy to +5 grain. 8.00
3435.—Gramme Weights, in mahogany block, 500 grammes
to 1 gram. $8.00
3436.—Ditto. 500 grammes to | centi. 12.00
3437.—Ditto. 500 grammes to 1 mili. 14.00
3438.—Ditto. 1 kilo. to 1 gram. 12.00
3439.—Ditto. 1 kilo. to 1 centi. 16.00
_3440.—Ditto. 1 kilo. to 1 mili. 18.00
3441.—Ditto. 1 oz. troy to +4, grain. 4.00
$442.—Ditto. 2 “ “ & 5.00
34438.—Ditto. 5 “ « & 7.50
$444.Ditto. 10 “ “ « 10.00
3445.— Weights, sets of fractions of millegrammes, accurately
balanced. Each, $2.50
3446.— Ditto, French, brass, 4+ to is oz. $1.50
3447.—Ditto, ditto, mahogany boxes, 50 grammes
down. $3.00
3448.—Ditto, ditto, 100 grammes down. 4.00 QUI
3449.—Ditto, ditto, 300 5 ‘6 5.00 3448
3450.— Ditto, ditto, 1000 “is - $7.50
3451.—Ditto, ditto, in polished wood boxes, 1 Ib. to 4 grain down.
3452.—Ditto, subdivision of grammes. 50
3453.— Ditto, from 1 1b. avoirdupois, down to 4 oz. $4.50
3454.—Wire, brass, for making scratch brushes, etc.; No. 20 up to
No. 40. Per lb. $3.00 to 5.00
3455.—Ditto, copper, 1s in. Per lb. $2.00
3456.—Ditto, silk wound. e 3.00
3457.—Ditto, copper, silk wound, for making Ruhmkorff’s coil and
other electrical apparatus. Per gramme, .12
3458.—Ditto, piano, for blow-pipe experiments. Per lb. $1.50
3459.—Ditto, magnesium. Per foot, .06

3460.— Ditto, gauze of copper, according to fineness.

Per sq. ft., .50 to $1.00
3461 .—Ditto, brass. ‘ 40 to .90

180 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE.

3462.—Wire, iron, price according to fineness.
3463.— Woulff’s Apparatus, for washing Gases.

8 oz. 16 02. qts.
$5.50 6.60 8.00

3464.—Ditto, with lamp.

8 02. 16 02. qts.
$10.00 12.00 14.00
Wurtz’ Apparatus, for Fractional Distillation. See Dis-
tillation.
3465—Woulff’s Apparatus, with gas bottles instead of flasks,
and dispensing with lamp and stand. $4.90 to 6.50
3466.—-Zine, Filings. Per Ib. .25:
3467.—Ditto, Sheet. eee
3468.—Zines, for bichromate batteries, cast. .25 to $3.00
3469.—Ditto, for Bunsen’s batteries, heavy rolled. $1.50 to 3.00
3470.—Ditto, for Daniells’. 75 to 1.50

3471.—Ditto, for Grove’s or Smee’s, cast. Per lb., .18

4

Hy " \N

FILTER QUICK, CASAMAJOR’S.
Each, $0 75. , .

This Filter has been fully described in the a
August, 1875, number of the American Chemist a

and is found to be very useful, not only in fil-

tration, but also in thoroughly drying the pre-

cipitates afterwards.

es CONSTANT WATER BATH LEVEL. Each, $7 50 —
Bes The cut annexed represents a very

a useful copper apparatus, contrived by

ees n Dr. J. Lawrence Smith, of Louisville, &
Ae ee | to maintain a continued level of water

in a series of water baths.

The outer vessél has an arm whieh peta’
sustains a glass pipette. drawn at the — =
lower end (C), and held in position by
small pieces of caoutchoue tubing (A. & |
B). This pipette passes through the
metallic swimmer (KE) placed within the
above named vessel. Under the bottom
of the swimmer is an elbow supporting
a rubber cushion (F), which—-when the .
swimmer is buoyed above the desired
level—presses against the drawn point
of the pipette, and stops the flow of
water. The top of the glass pipette (B)
is united to the water supply. and the

| No. 3677 discharge tube (D) projecting from the
- foot of the outer vessel, is connected with the water baths. “Soa

Bunsen’s Improved Water Bath for Constant Level,

Consists of the usual copper bath with concentric rings:
with the addition of aconnecting tube running from the
bottom and joined to a simple ‘arrangement by which
the level of the water in bath is maintained. Theinner
tube (A) passes through the bottom of the attachment
(C), being held in place by & rubbertube, so that it may
be lowered or raised to answer to the height of
water required in the water bath. (B) isan outer tube ies
} through which the water is supplied from the hydrant,
_ No. 3679. the overplus passing out through the tube (A). 2
This supplies a want lone experienced by chemists, for in using the old form,
é in case the analyst is called from his work, there isa risk of the water being
evaporated from the bath during his absence. — fae
; A tripod may be attached to the apparatus to support it. .

7

een

KE, B. BENJAMIN’S DESCRIPTIVE CATALOGUE. |
Buyers cannot be too much impressed with the absolute
advantage of purchasing direct from a responsible dealer

in chemical apparatus, who understands the uses of such

goods, and has a reputation at stake in his special line;

who has the goods in stock adapted to the purposes adver-
tised, and has no occasion to provide any makeshift of sup-
posed resemblances to catalogue illustrations. Very fre-
quently I receive advices from chemists, stating that they
have handed orders for apparatus, chemicals, ete., selected
from my catalogue, to dealers near them, which goods
were never bought from me by Se agents, resulting in
furnishing the cheriet with poor SOuea and reflecting
unjustly on the character of ny stock. Only by buying
direct can the chemist be sure that his entire order comes
from a dealer in chemical apparatus.

Every intelligent chemist knows that the labor of prepar-
ing an analysis is liable to be lost from the use of imper-
fect or badly annealed vessels, and. will therefore avoid
investing in poor articles because they may happen to be

cheap.

E. B. BENJAMIN.

f. B. BENJAMIN’S DESCRIPTIVE CATALOGUE.

PROF. RICHARDS’ ASPIRATOR.
A Substitute for the Bunsen Pump...........2..... 000. each, $1 50

)» C represents the Aspirator invented by Prof. Robert H.
| Richards, of the Mass. Institute, of Technology, Boston, and
tw) used for the purpose of quick filtration. It is the result of a
—~_J\/} number of careful experiments made by the above gentleman,
“qj and for simplicity of design and the ease with which it can be
H manipulated, together with its efficacy, it recommends itself
} to all who wish a good effective filter-pump, without being
\f compelled to pay the high price which a more elaborate piece
\\ of apparatus would obviously command. In order to use this
pump, all that is necessary to do is to connect the tube at the
}) top with the faucet of an ordinary hydrant, by means of a
| length of rubber tubing, whilst the filtering flask carrying the
funnel is attached to the tube at the left of the pamp. Upon
} allowing the water to flow through the latter, the air in the
4 cylindrical part surrounding the small interior tube is caught,
No. 3673 as it were, by the water, and drawn into the lower tube, thus
producing a rarefaction of the air in the tube at the left and in the fil-
tering flask. The result is a flow of water through the funnel and its
contained precipitate, and a thorough washing of the latter. By con-
tinuing the working of the pump after washing the precipitate, the lat-
ter may be so completely dried as to be ready for ignition in acrucible,
and the pump is also cleared well at the same time. As a certain ratio
exists between the size of the orifice of the interior tube, the diameter
of the exterior tube, and the force of water issuing from the hydrant,
it will be necessary for parties ordering the apparatus of me to state
the approximate fall and force of water at their command, that the
pump may be made to correspond.

FUNNEL FOR RAPID FILTRATION.

Casamajor’s modification of Carmichael’s process......... each, $0 50

This is represented at D as a small inverted funnel.
The original funnel, as conceived by Carmichael, was
made entirely of glass, with a bottom perforated with
fine holes, these holes being produced, whilst the glass
\ was in a state of semi-fluidity, by means of a red-hot

is SAL: needle. This being a very uncertain, if not an impos-

| sible undertaking, the idea occurred by Mr. P. Casa-
major, of Williamsburgh, that by making use of a funnel provided with
a movable bottom or diaphragm of platinum the end might be attained.
This funnel was tried and found to answer all that was required of it,
and it is now offered to the chemist as a cheap, efficient and very

B. B. BENJAMIN'S DESCRIPTIVE CATALOGUE. ——

convenient apparatus for rapid filtration. It is made as shown in the “

cut, of glass, with its stem bent at a right angle, the part shaped ee:
a bell being provided with a circular disc of platinum perforated with

fine holes. (The disc is not shown in the diagram.

The modus operandi is as follows: The disc, whose diameter is about
20mm., is laid upon a piece of filter paper (Swedish being generally —
preferred), and a circle of 25mm. is cut out of the latter, thus leaving —
a small margin all around the edge of the platinum. The latter is

_ then separated from the paper and laid upon the funnel, completely

covering the large opening. ‘The paper is then moistened and laid over
the platinum, covering it and extending over the edge all around,
where it is brought in contact with the glass.

The funnel is then connected by means of a rubber tube attached to
its stem with the flask, which is in turn put in communication with
the filter-pump. The mouth of the funnel, which is quite small, is
then placed in the platinum or porcelain vessel in which the precipitate
is to be ignited, and is poured into the vessel. Upon starting the
pump the filtration begins, and iscontinued as long as necessary, with

a small disc of washing, etc., being a precipitate in the dish the final

result, after paper upon it, the ash of which, after ignition, may be
disregarded. ‘The upper edge of the funnel holds a little of the pre-
cipitate which may be weighed with the funnel itself.

i
'

IMPROVED FORM OF LIEBIG’S POTASH BULB.

By Alvergniat Freres, Paris.... ce eneeeeseeeeceeees «4. ach, $1- 00 |

This piece of apparatus is shown at Z, and dif-

Potash Bulb, in having the lower bulbs connected
by curved instead of straight tubes; at the same
time the circular bulbs at the side are replaced by
pear-shaped ones, the latter as well as the extra
No. 3675. length of Tubing giving increased contact of gas |

and liquid, and thereby increased absorption. Again, the extension

of the tubes (at the lower part) to one side, forms a base of support, so
that the apparatus may be placed upon the pan of the balance and
readily weighed, withont the trouble of attaching wires to the upper
part, and hanging it to the beam.

These bulbs are used by many at present in preference to the older
form, and bid fair, in time, to supersede them; for this is an age of
progress as well in the chemical laboratory as anywhere else, and it is
but natural for the analyst to select for his work those pieces of appar-

atus which can be most conveniently used, while at the same time per-
| oe ne their work satisfactorily. ,

fers from what has always been known as Liebig’s.

E, B. BENJAMIN'S DESCRIPTIVE CATALOGUE,

PLATINUM.

'The increasing demand for the “ non-blistering’’ Plutinum, of which
my establishment is the depot, has enabled the company which I
represent to grant me extra facilities in this line of goods, and I
would respectfully request » comparison of the quality of these goods
with those sold elsewhere.

FRICTIONAL ELECTRICAL MACHINES.

I have nearly perfected arrangements for bringing forward a new
Patent Electric Machine, yielding long sparks, and adapted to the
means of our academies and schools. ‘I'he price will be about twenty-
five dollars each. The larger electric machines now made here are
materially reduced in price, in consequence of decline in cost of
~ making.

BALANCES AND WEIGHTS.

My patrons will receive herewith a list of Balances and Weights
published by Henry Treemner, which they will please substitute for
those of Becker & Sons, published in my Catalogue of ’72. Mr. H.
Treemner having appointed me a special agent here for his Analytical
Balances and Weights, all sold by me are guaranteed fully equal to
any sold in this country. 3

CHLORIDE OF CALCIUM TUBES.
Two Bulb with Interior Pabe fe ee ....+---. each, $0 50

This is a new form of: Ghioride of Calcium Tube, devised. by
Prof. Mixter, of Sheffield Scientific School, New Haven, and in
use at that Institution. It is an improvement upon the old
form of drying tube, the difference consisting in the addition
of a small interior tube, reaching nearly across the smaller of

can be seen at a glance, although no one can fully appreciate
its usefulness without having used both styles. When in use,

one, the large bulb and tube being filled with the drying mate-
rial, chloride of calcium.

vapors condense, for the most part, in the smaller bulb, only a

the two bulbs. The advantage which it has over the old form —
the gas is caused to flow from the smaller end to the larger

During the passage of the hygrometric gas, the aqueous

ae sore comparatively s small amount being carried over into the chloride )
of calcium. For this reason the latter may be used over again, and
the operation repeated several times without refilling the tube.

kK. B, BENJAMIN’S DESCRIPTIVE CATALOGUE.

}

The part which the small interior tube plays is, to keep the water
which collects in the small bulb from running into the large one, a
disadvantage to which the old form is subject. Furthermore, the tube
may be used in an incline or even vertical position without inconven-
ience, and still do excellent service.

The use of cotton may be dispensed with in this form of apparatus,
as the very small bore of the interior tube will, if care be taken to select
‘umps of chloride of calcium (instead of the same powdered), prevent
them from falling through into the small bulb.

RADIOMETERS.
ROR OB cs oad me sehepk Se eed Wiela Gratis torte Beare each $7 50 to $9 00

The Radiometer, invented by Wm. Crookes, Esq.,
F. R.8., of England, and manufactured in its most
elegant form by Dr. Geissler, of Germany, the mann-
facturer of the world renowned ‘‘ Geissler ‘Tubes,”’
(who has appointed me his agent for their sale), is
shown in the accompanying figure. It consists in
the main of four radial arms of very thin metal,
carrying at their extremities diamond shaped pieces of
a peculiarly light substance, the character of which
varies somewhat in each manufactory. The system
ae is delicately poised at its centre upon a needle fas-
“No. 3672. tened into the extremity of an upright rod of glass,
and kept from falling from the same by a vertical glass tube, whose
lower extremity projects over the cap of glass which rests upon the
needle, and upon which the arms are fastened. The whole is enclosed
in a shell of glass, pleasing in design and strong enough to resist the
pressure of the external atmosphere (for the apparatus is exhausted as
perfectly as can be done by a sprengel pump, to obviate as much as
possible the resistance which would be caused by the air).

Upon placing the apparatus in the sunlight, or allowing the light
from a magnesium or electric light to fall upon it, the radial arms begin
to revolve, and continue to move as long as the light rays last, the
velocity of revolution increasing or decreasing in proportion to the
intensity of the light.

No. 10 Barchay STREET,
: New York, November 1, 1876.

Thanking my many kind patrons for their generous support the
past years, I beg respectfully to present this list to their careful
perusal and attention. |
The long established and celebrated house of Dr, Trommsdorff
having granted me extra facilities on their pure chemical products,
I’ beg permission to present to my kind patrons the following low

prices for rare and pure chemicals, prefacing the same with the

observation, that as I have no trade for drugs, buyers will perceive

that I have no temptations to substitute ordinary chemicals for pure ;

therefore, the accompanying list is intended for only the best article
of its kind of the sort named.

There is also added to the list of chemicals, some few new styles
of Apparatus which are not in my catalogue, and I beg to add that
I am also making material reduction in such American made articles
as the lowest prices of labor at this time warrant, For example:
Combustion Furnaces, 25 Burners, quoted formerly at $50.00, I now

sell at $40.00; ordinary Bunsen Burners, at $7.00, net, the dagen,
&e., &c. |

Buyers will kindly compare the German and Bohemian glassware
us to quality, and as there is about 50 per cent. difference in cost

abroad, any ordinary offer of discount is not likely to cover the

difference in quality, any more than such discount will cover the
difference between Semi and Royal Porcelain. By comparing, for
example, the Bohemian Funnels No. 2318 with the German Funnels

No, 2322, an approximation of the difference may be arrived at.

The genuine Bohemian /lasks and other glassware may be dis-
tinguished from the German, French and American by a delicate

greenish tint across the tops of the vessels; other glass, French

especially, being nearly white, or straw color tint.

K. B. BENJAMIN’S DESCRIPTIVE CATALOGUE, 3

Again, the Beakers ordinary ease at 1/3 are identical in size
with my 0/2, and those called 1/5 are ‘identical with my 0 /4, Se.

-—my estimate of capacities allowing for boiling. The sizes named

by me are the same as filled in Europe, and I am not responsible
for sizes made up here by any other dealer. A comparison will show
that my prices are, and have been very low, and so of other goods,

RECOMMENDATIONS:

‘Those of my patrons who haye always taken an active interest in
my success, will be pleased to learn that the Prize Medal has been
awarded to me, alone, at the International Exhibition at Philadelphia
over all competitors in the United States, “for Pure and Rare Chem-
icals and Chemical Apparatus of excellent design and finish,’ by the
Judges in the group comprising this class of goods. The Judges are:
Charles A. Joy, Ph. D., Professor of General Chemistry, Columbia
College, N. Y.; F. A. Genth, A. M., M. D., Professor of Analytical
Chemistry, University of Pennsylvania, Philadelphia; Dr. J. Lawrence
Smith. the celebrated Chemist of Louisville, Ky.; Professor C. F.

Chandler, Ph. D., M. D., LL. D, Professor of Analytical and Applied
Chemistry, School of Mines, Pharmacy, &c.; Professor J. W. Mallett,

Ph. D., University of Virginia, and the following eminent gentlemen
from Europe, viz.: Dr. William Odling, F. R. S., and Professor of
Chemistry, Oxford University, of Great Britain, chief among English
chemists; R. Van Wagner, of Germany, editor of the Jahresbericht
der Technologischen Chemie; J. F. Kuhlman fils, of Lisle, France,
probably the largest manufacturer of chemicals in the world; Prosper

de Wilde, Belgium, and Emanuel Paterno, Italy, all of whom are justly —

celebrated in the scientific world. ‘The award of which these renowed

- gentlemen have deemed my goods worthy, will, I trust, stimulate my
countrymen to encourage all efforts to place this establishment on a

par with any other abroad,

*

“

-

es >
%

i

Es
e
2
a
ee
zs

*

¥ >
fee ah Ps

Pe
*

CHEMICALS AND REAGENTS.

_. Tuts List comprises the majority of Chemicals I keep, though
there are a number of strictly commercial articles that usually rank
under the head of Chemicals, which are omitted, but which I have

4

the fullest facilities for shipping at the lowest market rates.

The prices given are for usual quantities. If large amounts of
any article herein priced are desired, I should be pleased to give the

benefit of the lowest market quotations, according to the market
values at the time.

I have frequently procured Crude Stock Chemicals, Drugs, and
other articles for class illustrations in Organic and Applied Chem-
istry, for my patrons at a distance, and will take pleasure in serving
them in this manner in the future, charging only a small per centage

for my time and trouble.

Standard Test Solutions, according to Fresenius and other au-

thorities, carefully prepared to order at moderate rates.

Great attention is paid to neatness, cleanliness and accuracy in

dispensing reagents.

Complete collections of the elements made and arranged on de-
mand; also suits of the principal spectroscopic salts, neatly put up

m glass stoppered vials, for either class illustrations or Laboratory

purposes.

E. B. BENJAMIN.

182 E. B. BENJAMIN'S DESCRIPTIVE CATALOGUE

ABBREVIATED TERMS AND TRADE MARKS,
USED IN THIS WORK.

Sol.—Solution ; Precc.—Precipitated ; 1b.—pound ; 0z.—ounce};
dr.—drachm; gr.grain; grm.—gramme; Mg.—Milligramme; C.
C.—Centimeter; pt.—pint; qt—quart; gal—gallon; Opt.—best,
next to pure ; pure—next to C. P.; C. P.—Chemically pure; U.S. P.
—United States Pharmacopeia; Puriss—extra C. P.; T—Tromms-
dorff’s ; M.Merck’s; Spec.—Specimen ; Com’1—Commercial ; com.
—=common ; Sub.—Sublimed; F’. F.—Forte Fortisimo, or very strong ;

F, F. F. F.=Double; Conc.—Concentrated; Fren. or F. T.—Fre-
senius’ Test; Sp. Grav.—Specific Gravity ; Am.—American.

COMPARATIVE TABLE OF WEIGHTS.

1 pound Avyoirdupois,

1 ounce .

1 drachm,
28.35 grammes,

31.10 .
453.60 as
1 “c
100 “
100 a
1000 ° -

1 Kilo.,

|

|

|

7000 grains.
4375 “

54.69 <<
1 ounce Avoirdupois.
Le oP ROy

1 pound Avoirdupois.

15.434 grains,

3.53 ounces Avoirdupois.
S214: . Deoy,
1 Kilo

2.204 lbs, Avoirdupois.

Pie ee Sr.

A.

| Acetone, ©. Be are ein Caan Go marae OTROS
Acid, ACCC, Ul; B/E. Sptaray., L008? es oe... Per Ih.
Ditto, strictly C. P., Sp. Gray., 1047 U. 8. P., same
quality as Baufoy’s best En MS ea ou ey OR ies: «
Ditto, Acetic, Glacial............Per Ib., $1.25, Per oz.,
UOC OS hac oo, aera eee ee ES ee,
BPR cS ue howe een 6 EOE TDs S130
PBERIOUR Oe Boe ote BSS ee 1.00
Ditto, Lump Coml., very Ben es 20
SOTHCIC Ge EBB, DOWNES. ocala oes park
PRUNES, ENO a a ccs Oe a
itt, Com, Artie oo oes ee. ;
Bueynic Parise 68s oy.
Camphoric, True, ed 2.50
SMM OF IG ie: Pic aos |
Carbazotic, Puriss.... d Se atre vk 1.00
AOR Vis Ss On se te tae ete 3.50
Carbolic, White Cryst...........Per Ib. $1. 50 Per oz.,
Ditto, Com’] atee he ers ee tf PAO Me
POM ie kU. oes tae dp lena es asin
rere Pt hay a Sewn.
Citric, C. P., Cryst...Puriss.......Per lb., $2.50 Per oz.,
MP A gs a ia We eng Sed ek oe
Fluoric. See Hydrofluoric, in 1 oz. and 8 oz. bot-
THOR: 3 | Se
Gina. Panta 23.6 cage oe es
Bmntie be ie en |
MN a sites
RONG RON oe 5 is vk

184

““
oe
ee
“<
ee
<<
“e
“<
ee
ée
ee
<
““
“ee
“ee
&e
“ee
“ee
ee
ee
“<<
“<é
66
“<é
‘e

“

“ee
. 66
“
“ee
“ee
““
e

“

E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

- Acid, Hydrocyanic, U.S. P..... Liipewe ay hee OR Per 0z.,$ .10
Hydrofluoric, in gutta percha bottles, with bottle. Perlb., 2.25
FAVGTONMOSICIO OL Fe, ors eno e ee cs ese Ses 1.00
Hydrochloric. See Muriatic.

Hypophosphorous, Sol... ee ers. Per -0z., 40
FORUCG, OS Peaks sce eee hte ee « 2.00
Lace, 0. Po Cont... awievs ee Son a eee és 50
WEBCT cs ear es vs eee eg es Me OL a yee io FBO
SERRANO oe hs oa eo Petes Per dr., .40
PLOCONIG Seow Wee Peis 8 Cie Vas ee See ie Per 0z., 8.00
MUON io ee Ve Ey OE ee a ay ee RS SOD
MolybdieyO. PoP ka Se eae as Os Per oz... *500
Muriatic,.C. P., in 1 and 6 Ib. bottlés......5... Per 1b, 27
TG, COM lo ee ao ies a Ee 6 .06
Ditto, special price for Carboy.

Nitne, Oi -P5. and 7: lb.cbotiles.. 515 sce as 35
Ditto, Com’l. Per carboy, special prices, ..... “ 15
Ditto, Fuming Red. ©. P. (rare quality)....... “ 2.25
Ditto; die atte 8. Sa ae ed ‘6 1.50
Nitrohydroomteric, Pare... 600 ee ae a 50
Oxalic, C. P. 'T., according to quality.......... L258
Ditto; 0, Py Am,,.very Buperior...8.i. 0085s Ef 00
Ditto, Goml, ¢ ov 608 Ce Wie Es Siew sb bts 5 eee ¥ 25
Qlete Koo Si Va eC SN Vis Hee Sees pkey OdeS .-Per oz, 1.50
Phosphoric, Ah Bakes ve as eee ae aoe. Oe
Ditto, BCIAl, (OL Pe Bae ay eee ee oe ce ee ee Ke 20
Phosphorous; ih Sole. esi as Se ey ee ee 10
Phenio;’Oryatais,: Pare oo. 5.955 ss te ees ole AE 15
Phosphomobybdio; Sol. vite... ites es << 1.00
Phosphowolframic, Sol......... pee hate Sfobe ee, .80
Pyrogaiiic; betise sO, Bebe. eae Be - "80
Ditto; Alb. Sebi PUPias iss oe Ris a has ee id 00
Pyroligneous, Refined. ..... 2.0 co.cc vag a Ve LS Oke
Prussio, * Scheeles..0 5 yes Gs COREE a Per 02, .25
BalieyNes ss sccei hc des os ree ree hen Lead. 91 50
Pictric, Trues. 3%. o4%0% iin neg Ae A os. Per og, \* 40
Silicic, Pure Native, Pow’d........ Fanaa aioe Per lb., 25
Ditto. Pe Pree; Bessa oe cn 4 a ees Per oz., © .25
Succinic, Pure Alb. Cryst......... ag eeeteats FS 40

OF CHEMICAL AND PHYSICAL APPARATUS. 185
Acid, Stearic, Puriss., for delicate analysis...... Spelt Perds., @ 68
Morente COs ee or eee eee os Tee Pee ees Per oz. .10
ere eee Sa Se ONS Ree ce ee Per dr., 1.75
‘ -Pulpnurie, ©: P.; 1: and9 th. ‘bottles... 2.2... Per lb. .40
Se ae ON Ee Sr ee re eee Ue ea 06
« Ditto, Nord, in cans and bottles.............. ui 30
« Ditto, per Carboy, special price.
ie TOG 4 Pi, LOVISE ek Cio. Pate. 2 Per Obs au
GH FUNG. Ges Dal ate Ocak she k oe 15
Bea rere Phares Orvat oto hr a tes OS Agee
orto, 0. Ps for ncvurate ardiveles (2 SO
M Ditte, POWRRTCG, COM. or oie re ewe ak as .60
ogeade bi’: 2) opiate anes areas Panera ear Ue N eh eh hha Per dr., -40
Dee, ae OPN gins Seer oe eG os Soest Cake Per oz., 1.25
Pe SEPARATOR earn er et ee Ee es Per oz., 1.25
“ Walerianic.......... a eo Ie VG was Uk Per oz., -60
Dt RAIN Ay) Pc ta ee ts ble AE Regie Per dr. 8.00
“ Wolframic. See Tungstic Acid............... Per oz. .40
Alcohol, 95pr.c.; special price large quantity........ Per gal. 3.00
Pe BUaOiiie fe Cr Ne oe re area ts: Per lb. .80
Ge ADA Foe i ea a ewos Suh cays 8 Oe
REO er eae ee eee eer eas) Cr ae
. Methylic, nearly inodorous and free from
Amylic Alcohol. This will be found to be
an excellent and cheap substitute for Wine
Alcohol in all heating operations. It pos-
sesses decidedly greater heating power than a
Wine Alcohol, and is recommended to the
attention of all chemists and experi-
menters living where gas cannot be pro-
cured or used. Per gal., $1.65, by the keg
WE OM ig oes Se. re i et es ee Per gal. 1.40
Albumen, from blood..... fe ed per Sia eee Per oz. 25
" i Es ore ikea eats ea as ae 50
- Tee OME SN tila oat Sass oer eae Pe - 20
AIGOMPOO eek a: PEt PNEE GON he cole ee Per 0z., .40
Aluminium, Mett, foil. 3.0.00... 000 eos ce. ce ee Oe
2 ONY SOO SA: Mika Oreer ach. Peon i.

o atone Gi Ps sooo y hts oe zs 20

186 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE
Aluminium, Fluoride. Native; see Minerals........ Per lb, $ .5¢
Alumina, Prece., Puriss., hydrated..............0.. Per lb. 2.00 -
hs POAT Se oa HE OG Cale ca ee catee Per 02. - .30
- Bromine.cs so ka ee SS he ee Per 0z., 50
« Sulphate, Pure Cryst. Leviss............. Per 02., .20
“ $f and Ammonia, Puriss......... Per lb. 1.00
sf $6 es as Crude,Com.... “ 10
as Ammonia, Cryst. and Pulv..:.........3. ff 25
Asn, Potasss. 0, Pe Te cio, ec see és 25
SS POR, eda ds Mok GU eb dea e woes ee Rs Per 0z., .10
Bf On vomis,. Opyits, Pure aie Veena ee eee $6 10
pA gen ib. HOPG ooo. es eo ie Per lb., 1.00
mbOr, Wan pieces. 545 ee ete aoe Per 0z., .20
Ammonia, Aqua, Conc. U. 8. P., 44 lb. bottles...... Per ths =.35
€ Liquor. F. F. F., 263 per cent. of gas...... Peril by.°3.35
Per 0z., 05
af Sprite US. Peso oye an cea sane kelp Pes 1h. 26
id Acetate Orvat. Oi Bigs ict via cena yen Per oz, .50
« Ditto, Doli: Oe Pa ees oaks 4 ea ee éé 25
“ PA TOCHIADG bok S5'N oe aie oo win en § Be lane : 30
+ Benzoate, OC. Po os ee eee .90
+ Bich roomate ys so so yk eas 5 i505 es ae i 40
ng TIPORATA Gio soos esta oes oh ane se oe * 3d
ne Corborists, Dares. o's ks < isda eee RS Per Tbs: 76
« DitG,; ORY. eee ae haya ice cee fon aoe
‘ Citrate and Citrate dron........ 06.05 50% Per: 02,,: «25
“ UEP BLE oes cus Varies cae ee ae Per lb., 2.50
« Gallant, Dire icc ocak penne eke Per oz., 1.50
* Mydrosniphide,; iG... vs vy sew spe een Per lbs © 76
Hydrofinorate, Oryat.,: CoP. ois sais open ties Per 04. 1.50
_ Hy pophogph ites. is wis acuit Sab Mae Vin oer ' 30
x Molybdate, 0. P., Oryst. .\. .6... ess eee te $ 05
m Monocarbonatey Cac: 5 ves ks oe de eeawnee Per lb, 1.50
1 Ohloridie Gy Piss esas oo hotest nls nor eigee ee if 50
«6 Datto, Conte owitao ss 5 Uae Se eames ‘f
“ Nitrate, Oryst, 0s 23.0. Per lb., $1.00, Per oz., .10
é“ “6 fused Am., Pure....... (aes Per lb. .40
& Oxalate, C. P., Cryst....... Per lb., $1.80, Per 0z., .20
es Phosphate, Cryst., Pures... .siss ov eeie'vies ¢ 20

OF CHEMICAL AND FRANIOAD APPARATUS.

Ammonia, Succinate, T., Cryst...
Sulphate, Com.......

e

“e

ce

“e

“ee

“

Amygdalin.. .

‘“

Clik rakes ee

Sulphocyanide........
TIME Ps ed he i

Valerianate ..

Vanandate..

Amyle, Acetate.......

6
“ec
it
6 -

6s

Butyrate ....

_Formate.....

Nitrite, Pure.
Valerianate....

Amalgam, Mercury...

&e

ee

iT

“

“

“

, “
: “

“e

6

Anliing, Pure, Lig. 3c...

“<

ee
“
ce
“
66
“

“ee

Fusible...

“ee

Hydrochlorate.....

P80" ES ee e's (O. a

Antimony, Chloride, Sol...
Cryst, 0. P.:

eereee ev @

oee ere ee ee

eeoeeeve ev eee

a .@ #2, @

see oe

- Iodide, Oryst., C. P...
Proto Oxide, white, C.
Golden Milphates: oi. sales + 5s

Levigated. Per Ib,

Black

Ditto, Native. : 3. 6....2:
Tartrate, Cryst., Pure....

“

Sit O° Oe. 0 2 9. ea, #18

ore ee eve

Dee O54. 2 ae

oeee

Soe Che sie CAEN COL ORs e

eS EELS

“

. -Per lb., $3.00, Per 0z.,

“

“ret ee

“

ume ate
.. Per dr.
te Ot Ole

eoreeve eee SS gene . -
eee eve eee a w9 eee “sf
eeee . . . . sé
oeceeee ee Cse"'s wie we of
eee eevee ° ee af
ICES OW ON Ne eR

Cree 6.6 cate a. 4 Lee

Ditto, and- Tart Potassa. 435.56. <
EOE: Bea co as es

Sulphate, C. P.

BER rant ee 3
Biariet...<...
Bike ee
Violets 2.305
POA ec:

eeaeanreeee

Se COS oe S

Ser ok cn SO oy

Black...
Yellow..

Purple...

-@ @©@e ee ee

ee: Animal Charcoal, Gran., Best...

CMORLS Sorcerers csrdaces

eoeeeeevre ee ee

ce ee ee we eee ew ee

0.9) 16'S B08 € Ce 8 es

“ee

da Or IDs;
35, Per oz.,
wots er ibs

“ce
¢€ © @7e

ee

“ee

e

. Per 02.,

3
‘é
‘“
‘<
eeee
‘<
‘“c
‘é
‘<
eee .
‘“
eee
6

188 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE
Animal Charcoal, Com «0206 oo Per lb., $ .08
as ax Puiy: Fine foe ee ee Fe LOE
Arsenic, Native Metts. .c-0035-4. Se A 50
- Pulverized: io ct Ee ee a ¢ ao
< Bromide; eo Pace eee Ee ee Per:0%.,-« b2o
s Lodidess ooo SE REA ee or Or oe eee a Wd
" Chionde- se. is ete eth eee é .80
. Oxide Proto. See Acids.
“ és Per “ “
- Palphide Peres. soe ear eo ae Per lb. .20
a 6 9 RPI SR 6 AL cone 8a tea aa yr a)
POE ONG Foe Fos Oe Se Oo a ene es £25
WE 8s TOUORE re Se es Vee Sete es a ss 30
MUR ALIN, ORs see a ER Per dr., .30
MOU PAPEN NS Opt hs eee i oie ae Per lb. — .16
menestos; Long. Fibre: cers: 2255 8 ee Re Per oz., 15
a Short 2 ec ek Rees et eds FFs Pek T Per lb., - .60
Atropia, Pure......... rie We se emenarae ac ser sh waaay Per gr., .06
* Sulphate Usa Rag EP eee te Pe Oe eee Pee rs .06
B.
Barium, Chioride, Come. 22050. oy secs Per lb., .20, Per oz., — .08
ey ‘ RET GAAS EN Ss Ot rte a Se 08
- Rf Purisss By esi Oy eee Per lb. — .40
" HNRORIG F555 5 ae ass ee ee ee Per o0z., 1.00
Mott, Specs oii diaaee iret yer Per Gram. 4.50
¢ To@id6; OB ie ese 2h Ras 68 Ot EE Ee 8S Per oz., 1.00
" Hyperoxide, OP 2: cere es ei eee ék 45
a Proto-oxide, eR P EERE Lee Lp es rf 30
ig Sulphide civ ivi iscev sia yia eee ee ee * 10
saryta, Acetate.......... "Cha ERR E RE EET DRE See ge 20
se Caustic, Cryst, ©. Poo cs .. Per lb., $1.00, “e 10
o Carh,, Natives...) iw ¥s eC eee eee Pér- ib. 28
% PPB OR Se Oy Big «bret a iy ash eae See ¢ 80
. Chiotate: Co PooRio ss. vccsdiws pea eek Per oz., .4U
a Nitrate, Cryste OF PP ivus ivcvewe esos yee oe Per lb. 50
- Co AIOE kasha vee eee hei ena ewan s 30
. Bulphate.. <6. dia is 2 ving aree Ownng Boe be eee - 15
re OD te PMPs oes eee FOR alee Fer 06,5 26

~

OF CHEMICAL AND

Baryta, Water, per fluid oz..

is : Beeswax, White......

e Yellow ..

Rcherine, Puree es ce.
“¢ Sulphate ...

fs Benzoin, Gum.........

.

PHYSICAL APPARATUS.

“<

Per lb.,

.Per oz
ee

\
erteeeeeese ee oe .

. Per 02.,

MUON@, GORING 8 oi. hak cs etary oacy ss POP ply
i © Benzine. ..°..:...- Ree ay Ua eS GREE his Tee
I GIR RCE Sn sk Oa 6 Se is Cok a bie es + FEO 0s
Paro MEAD CTUMUEL os ka eh ee ne ae
Bat és Mia Pate ee ee aS
: RCE OOK Os ee a a ee Re
ce

. Carb

- _ Chloride...
- Oxide, Hydrated......
ft Nitrate, Cryst...

“ce

Ce ra eh Om et ee oe Be wed RY Se Oe oe ee a Po A ees ee ae ar ee

- Sub. ditto, Powdered...

Tannate....
_ Valerianate, C. P.....

Black Flux...

@) OF 02 a 6

“ce

Ce O29 Oce € @ OF 0's 0) 2:8 6
“ee

oeeeeee ere ee eee
oe

oeoe eer eee er eee eee
“ee

0. 2: U2 68 Bo 6 Jon €
“ee

Ceca. Bee lb.,

Bone-Ash, Am. (by the bbl., or 50 Ibs., or more, spe-

ERE DESEO RG A kh 'x aa faa eee o's va gee

ig Wrench 6200.0

e Washed.
Bleaching Powder..
Borax, Refined. .

‘i Crease. ic:
7 “ Pulverized.......
Brazil Wood, True....

“eee @

Bromoform, C. P.......
Kromine, Pure.........

a « — Ohloride.........
bee asaeee. eres VERE: yak evs ene OT OR

-Brucia, ©. P.

« Mitvate. 25

6e it9

+ Hondas ccs, oe

ee

ce
+ ££ s O59) SO oF 4). CEO BE 6 Oe
e
ee OC Se O 6.6 OO C8 81102 6.2, 9 6. © 0
“
G65 O50. 6/0 OC 2-6 -9..4 Oo Biel 0) 6. 9 4
ce
eee * © (6° 9246544

.. Per Ib, $3. 00, Bek 0Z.,

ce

Paes ae oe acy ier 1b.
. Per oz.,

ece ee or se ee ew
“
“

C6 SB Se ee Ue eet eS) Se oer ee es oe

C.

PAHO. coos

atu, Mett, in stick; Pure, T..

“e

0, 6.0 @, oO, O50, 0.6 O10 (0% 8 6

oe. Sa a ee Oy
: “e

oe ee ee ee ew we ew ew @

ce

189

.Per 02.,$ .05
10.

0d
3.50
4.25
10
60

1.50
2.00

20
2.50

25.

Wd
4.00
4.50

EB B | BENJAMIN'S |

ny Goluian: Carbonate . PR eRe x pT =o ae PG 02., _ 6
a a Bildnde oe ee BE 6G
Mics Side: oo: RRM RRA A Gn Seger
: oo Bilphides 05. o 60. co. o. Se ees ee
a As PIES rs ee a ea eae ee
. Sualpliate sn eee ee ee 40
Caffeine, Pure s very ‘superior. odo oS a ae
- Giming oC eS, 5.00 ae
Casein, 6h PRTG, oe Saag yeaa uC ar ees ooo ROR IOiny: ) CROey oan
Pe a Calcium, Mott, per-Spéo. aie. oo ei ee sG ake a oh OE Or Pim 10.00% *
Sak at Awotate, C,- Piet ok Ss a ee eo ee
, a Carb. ‘Prepe.; Pure. io os js eer by 150 eee
« Chloride, Fused; 0. Py Toes yee oe OO
«6 “e Gran}: 865 Ay ee BO: tines

ROT. Te 5 ae

«“ OC Ory eee ee ee a
pose Bromide; Pure... 0d Ss ees et ccs we ss POR Oy

Pe KS Iodide..... Cd a> Enka Meee paw Nea rae ae ee 50. ae
pe. eo Nitrate; 0. P, Orso. es es 20: ae
x «° \ Binoride, Pow'd....... 66.60) 0s.s00eesn Por Ib, 40 ee
ee * # Oryst., native selected... .....0...45 & 30: eae
a ") Phosphide, ‘Pure, Teo... s a a ea See ‘a
ae Phosphate 00. 50< 0. pov eee Per lb $2005 25
Bike : . Sulpiide f0r (ck. te cA a ea eee eee 08 — eg
eS Camphor, Best Borneo eo. iss i Se OT
ae. Carbon, Bisulphide..........-.+++ +++. e-e4e++-++++Per Ib, 50
i ox: Trichloride, Liquid: (6.5.54 oe pa ewy oe Og ee
ba re ALDO, ATINALB. |. S.No ds Chg Fast sone gee we ee ee
Ey Carmine, Opt: 62a ee Per On 108 ee
Cerium, Mett, per specimen..:.......... 0.04.2. . Per gram. 1.007 |
$6 IONIC oo ss oul ate tp's win o's abe oa ce ets <a
A Nitrate. ae eck ce cas Lees age ee
* Oxalate, Puree. As baie ee eee 1.00 ee
Cesium, Chlonde. . Odea atecuS os ork oeek so Oe EOE DOG tae
Beats “and Rubidium, Obloride.... is iee <Perare 288 Bee
mt \Wothyle.... 0.05.05. 00: a aetednes Pav van eles s Goeyis POE ig) LNOn aa
3 an Chameleon, Mineral, Pine. ice heme Bae O%sy LB eee
ceo Chioral, Hydrate. s dices sec ei essa pie eea een OBE ae
ee Chiorine, Aqueous. Soli of. 035...) ties Gia ee te ON POE Tb, 65: oe
ie Charcoal, Willow, Pow'd; Pare... sos esp eueset ne Bee ee

a

a PONTO Melb eG aces cen
_ Chrome, Alum. See Alums.
fe nromium, Chloride,C. Py... -. 6.6. ease

- “haxscat: Willow, “Prepared in Rocke sabe k cess .Each, ¢ .10
>. Chloroform, Opt..............,....Per Ib, $1.25, Per oz... .20

.Per gram. 1,20

$8 Besqui CMMOTIIO 5 Soe dade wen eden ae 40
eile Oe ee .30
$6 CRIME oe ky kis eh cs reo Maew ee ee ee ee 30
€ OR is Oe oa oo Po eRe ce ee 1.00
Cinnabar. See Minerals.
— Copper, Acetate, C. ee Oe me ¢ -15
s Rt ODM PAULV otc rcv tee bee eh ec eee 05
oreo. 2, Po Ras oh cs ed od ca ec cake oe 40
i RRM che ie ee TE Ss cae tae 20
s Amnwniated fo Pa So Soe ee Be 20
«.. Oerbonate, CO: -P., Prece:s. 063. ee eS 15
ee MU GUA os ee eg Oe 50
4s Pee EMS oa GIy PINGS ER Oe es 25
re ee eo eS. a rae pot ees Sas 20
««Oyanide, C. Poe eee cere cece cece eee ees PP aad Wee
INS 6 ko ios beh in UW ys WG Re la sa Per dr) .40
Ore Ge, Oe Pee tage rc ok no oo eas) hs EOD Oban SR
trate, Cryst, .C..P, Te) ..2.¢2 Per Th, $1.00,“ 10
Wee OME ros lec figs 2s « 20
“« Oxide, OC. P., Gran. Pow’d, T. Par The $2. 50, ‘6 3)
ie Pure cow. i fr B00p 15

\
“ce ce

ite OUUCOG PUUIBE PUW MU... cciiesg sess cee © set):

oo Meebty b Ute GTA... 566%. <1 bor ib, $1.85, « 1d
ae, Thin Moll, Pure, © oss. oS Bo « .10
ee a ee 6g 08
PP OTARE ewe oes (ca. Sa ee een O00 # -06

Pe OPT ey et hea BO OS

De eaiphas © Pe ae)

& «“ Co se Oe ae * 05

iy eommtea ee Siete ak ie ce ee & 15
i REO Sk Eras Bev y Pee dias yee 12
- Cobalt, eas Ce Perey eat Cee OT cee uve | td
mes Bee bee Ge sea Us (25

‘

oy POY 02.; ~ 2.50:

192 E. B. BENJAMIN'S DESCRIPTIVE CATALOGUE
Genel; Chieride;C. Posse Fee Tee: Per 0z.,$ .60°
5 Carty te Pad oo gece Coe pies a“ 15
= PUTTS AG Pa eG ea es See uf 65
. 6 OUP) Bok Fo Ds. os teams s .40
4 Onaiic; OP. Pc ees ae 1.00
es side, AAP se pe ie A eee a Se
« i CRB Deis ee bee aan ee “
PEMOCIE: POM css hae ais Ce Per dr, 1.00
Cited 6 FB os di ede noo. non eee une Per 0z., 18
ae Cotton...” Best Parry's oi. 6 Anes eee eos ee "5
Ponte, Pare Germans as ce he eee Per dr... ¢: 9
Pecan TREN SOWA cies cree gs Peribg = a
SP PORROLE WW Gl0i 6 oo 8 ai ek an w eas « Sayh e ee Per‘oz..: "4%
Perea Artis, 6 os tes ees Cae Pet. Ib.,, 12 34 05
Cryolite, Best. See also Minerals... Per lb., .25 to 50
D.
Dextirine: Ont. Pow so ijace ee ei i ak eee Per lb. 20
SPC OR WAU os 53 5 ere es ooe (eke awe Per gal., ,20
MAGI BE as oe ae a gi ae oe ce eee Per book .10
Bre VATE OULONA6 sos CEC ee ie ek Concent ees Per gram. » 99
K.
Beemer MINNUIIG, ce 2 ds ek se Oe es Lot,:.60;.°.", Per. Jb.- =. 96
y Voptahle: Cones 5 0see ee awe So ee
¢ aAdeuc Fire Cone. oy als uactis bic oe ee a Per 02., 2*46
Fe Butyric. .. 4. EV ea dace ie ve bette te Aer ee 34 30
#. SUhlorid. bd ict ee awh Sime hee « 20
é OTA he eet Poe au ae a 40:
es GLI, PIPES OE 5 i's bck ee ee REE OPS EHES Per lb., 1,25
rf Cmenninio, Paine ere So nie ee Pe Per 0z., 8.00
Rmiery, Pioww ho ss Ce echo be eee Per lb., °.25
Pi OWE Glas: baie Aa 6 CASE LE RE * 20
F.
¥ Fehling’s Sol., for physicians’ and sugar-house use,
indicating percentage of grape sugar..... Per 0z., .12
Poway, Pow d,: White. vos Se hase eta eet es Per lb, .15
ee Native; Crysts iscsi es ae eae Kf 19

~T.T ent ee

ens

Special Heating Apparatus.

FLETCHER’S NEW EVAPORATING BURNER.—For

Glass and Porcelain Vessels, and General Laboratory Work. This burner is a great
improvement on the ordinary coil burner in use, owing to the fact that no currents of
cold air, which are so fatal to glass and porcelain dishes,
can reach the vessel, as is the case with all coil burners.
The flames are blue and smokeless, and are not liable to be
extinguished with a splash, being raised above the body of
the burner. They are made in solid copper, with lap joints
(without solder), The total height of the burner is about
1% inch, and is the same in all sizes.

To get the best results from the burner it should be kept perfectly clean,

This burner is especially adapted for Dentists’ use in the manufacture of NITROUS
OXIDE GAS, and is the safest burner known for heating glass and flasks, giving a
FLAT flame of any power, which cannot touch the flask.

The diameter of the bulb of flask gives the correct size of burner.

PRICE.

4-inch, $1.00; 5-inch, $1.50; 6%-inch, $2.00; 73-inch, $2.75 ; 94-inch, $3.50;
1034 -inch, $4.00; 12-inch, $5.00.

FLETCHER’S HOT AIR BATH,

for Pharmaceutical purposes.—This is formed by the addi-
tion of a perforated cylinder covered with strong wire net-
ting, flat or hollow as required, to the copper evaporating
burner. All sizes will take any vessel from the smallest to
the largest ; in selecting for general work it may be taken
as arule that any burner at its maximum power will boil
the contents of a porcelain dish double its own diameter, ==
z. é., a 4-inch is best for dishes up to 8-inches diameter, &c.

PRICE.
Hot Air Bath, 4-inch, (only size in stock),

No. 7, LOW TEMPERATURE BUR-
NER.—A new and improved pattern is now made
superseding the old patterns. This Burner gives a complete
range of temperature, from a gentle current of warm air to
a clear red heat, and is so perfectly under control, that
a common glass bottle may be placed on the tripod
and heated to any required temperature without the slight-
est risk of fracture. In practice it dispenses with drying
closets, sand and water baths, etc., and is equally well
adapted for drying, evaporating, boiling, and general pur-
poses. For very low temperatures the ring must be lighted
through the opening B. ‘This gives a steady current of
heated air through the gauze above. For boiling, etc., the light must be applied on the
surface of the gauze, thereby providing a large body of blue flame, which can be urged
by the blast pipe C. This is one of the most generally useful burners, and stands hard
dirty work without injury. The gauze if choked up with dirt can be replaced in a
few seconds.

PRICE.
No. 7, Low Temperature Burner, with blast pipe C, . ; ’ $2.00
ti No. 7, Low Temperature Burner, without blast pipe C, . ‘ 3 1.75

FLETCHER’S LABORATORY APPARATUS. 5

No. 45. FLETCHER’S HORIZONTAL SOLID FLAME
BURNER.—The special points about this burner are the enormous
power of the flame, which at the same time is under far more perfect control than an
ordinary Bunsen; the lowness and
steadiness of the stand, and the ease
with which the burner can be cleaned -
after the dirtiest work. It is in every
way a most perfect burner for labora-
tory use, cooking, small engines, &c.

The flame being solid, requires no
external air supply, and it is as easy to
make a perfectly solid flame a foot or
more in diameter as to make the small-
est. The gauze is fastened only by
loose rings, which, in case of an acci-
dent, can be slipped back, and a new
sheet of gauze put in in a few seconds. No other part of the burner can be damaged
by any accident.

To get the greatest power from this burner, it is necessary that the gas pipe and taps
shall be as large and clear as possible, and any India-rubber tubing used must be smooth
inside, so as to give the greatest possible gas pressure at the point of the jet. Three
sizes of this Burner are made:

RPC EL.
No. 45. Horizontal Solid Flame Burner—A, diameter 14 inch, . $2.00
No. 45. Horizontal Solid Flame Burner—B, diameter 2 inches, ; 2.50
No. 45. Horizontal Solid Flame Burner—C, diameter 2% inches, . 3.00

Nos. 46 and 46b. FLETCHER’S SOLID FLAME
BURNERS.—The flame is so//d and the same temperature throughout ;

the usual heating burners having a flame with a hollow center of unconsumed gas.

mae sa Ta
I A Nema alls ts ro)
AC LE

It is THE ONLY BURNER PERFECTLY FREE FROM SMELL, and is simple, strong,
cheap, and of a power and adaptability unapproached by any known burner.

The new burner measuring only five inches in total height (four times the size of
engraving), will with equal ease boil an egg in a small tin sauce-pan, or melt half a
hundred weight of lead in an iron pot. It will boil half a gallon of water in a flat
copper kettle in five minutes, and will melt 6 Ibs. of lead or solder, in an iron ladle, in
seven minutes.

The range of power of this burner is so great that one size only is made.

No. 46b.—In this the injecting tube is placed outside the body of the burner, reduc-
ing the height to 4 inches, and placing the gas jet further away from the flame, so as to
prevent liability to burn the india-rubber tubing. Power the same as former pattern.
Both will be kept in stock for the present. :

NoTe.—Keep the gauze clean, use india-rubber tubing smooth inside, and if a very
powerful flame is required, the gas tap must have a large way through. The burner
works perfectly with any gas supply, small or large.

FRAC LE.

No., 46 or 46b. Solid Flame Burner, (Nickel-plated), . ‘ ‘ $2.00
Extra gauze tops, each, . y eerie. : : . A 25

6 FLETCHER’S LABORATORY APPARATUS.

Nos. 200 and 201. FLETCHER’S ARGAND BUNSEN,.—

A cheap, simple and indestructible burner for general laboratory work. The flame of
these burners is shorter, more compact, and higher in temperature than an ordinary Bunsen,
and is also free from smell. The air supply is self-adjusting. The sizes given are the
bore of the horizontal tube. .

PRICES. No. 202.

Without Tripod. With Tripod.
3-in. size, gas consumption 4 per hour, No. 200, $0.75 No. 201, $1.00
y-in. . ‘ 3% ‘ sé 66 1.00 6 1.25
34 -in, ce ee 66 7 ce ce sé 1.25 6é 1.50

FLETCHER’S TUBE FURNACE.—This will heat an iron
tube 3{ to 11-inch diameter to its softening point in ten minutes, using a small foot-
blower ; or it will heat the same tube to redness without a blast, the same burner being
applicable for either draft or blast. ral

To use as a Draft Furnace, connect the tap A
with the gas supply, closing both the other taps.

As a Blast Furnace, connect B to a second
gas supply, full %-inch bore, and connect C to a
foot-blower. When the blast is applied the tap
A must be closed and the gas supplied only from
B. In the pattern, with the adjustable length of
flame, at the side of A is.a screw plug which ad-
justs the area of the gas jet without affecting the
pressure of gas. The gas supply when used with-
out a foot-blower must be adjusted dy ¢his plug
only, and not with the tap, which must be full on.
This plug adjusts the gas supply for varying
lengths of flame, the length of the flame on the
tube being altered bya sliding plug in the tube,

enabling the combustion tube to be heated from I!

one inch upward. The above can be used with IA):

air gas or coal gas. The foot-blower No. 94 gyoyaving shows the Furnace open ready

New Pattern is best for the furnace. for the introduction of a tube.

PRICES.
12-inch. 18-inch. 24-inch.

For draft or blast, with adjustable flame length, - $15.00 $20.00 $25.00
As above, without adjustable length of flame, . : 12.00 17.00 22.00
With fixed length of flame, without blast, ; ; 10.00 15.00 20,00

No. 111. NEW PATTERN GAS SUPPLY TAPS for fur-

nace and general work, with quadrant and pointer to regulate exact quantities of gas sup-
plied. This Tap requires no gasfitter. Screw the plate to the wall or bench, cut off or un-
screw the old tap, and connect to the supply pipe with a short length of India-rubber tube.
PRICE. 7

No. 111, with 34-inch
clear bore, . . $0.90

No. 111, with %-inch
clear bore, .°. 41.10

No. 114. For attach-()))
ing to gas pipes by “ap
means of a thimble.

PRICE. »
No. 114. 3-inch clear bore, $0.75 Mo. 174.
No. 114. %-inch clear bore, 0.95

FLETCHER’S LABORATORY APPARATUS. 7

No. 147. FLETCHER’S INSTANTANEOUS WATER

HEATER.—Giving instantly a continuous supply of pure water, free from
abl the products of combustion, and suited for all purposes.
|
1 aA 0

Designed to hang over a lavatory bowl or sink.
Height, 24 inches; total projection from wall, 6 inches.

INSTRUCTIONS.—Connect the upper pipe to a water
tap, apply a light to the gauze burner, then turn the gas
on, and immediately afterwards the water. The speed
at which the water runs rules its temperature. It will
heat I pint of water per minute from 50 deg. to 130
deg. Fahrenheit, or will boil 15 quarts per hour. It is
not designed for baths, being too small to heat a large
bath efficiently, but is specially intended for lavatory
purposes and the general odd work of. laboratories, re-
freshment rooms, railway stations, lavatories, and gen-
eral domestic purposes, where hot water is constantly
wanted quickly. The gas supply should be %-inch
pipe, and if india-rubber tubing is used to connect, it
must be smooth inside. It will work equally well,
but at a proportionately slower rate with ANY gas sup-
ply, however small. ‘

The engraving shows part of the casing removed,
so as to show the internal arrangement. ;

NoTE,—The light must be applied to the gauze be-
fore the gas is turned on.

PRICE «
No. 147. Instantaneous Water Heater, small size, ; ; ; $10.00
No. 147. Instantaneous Water Heater, large size, ‘ ; ; 13.00

If nickel-plated, $2.50 extra.

No. 247. FLETCHER’S NEW INSTANTANEOUS
‘WATER HEATER.—For Lavatory, ScULLERY, WoRKSHOP, AND

COOKING PuRposEs. An attachment to Fletcher’s Patent Cooking Burner, No. 47.
Total height, 9 inches. :

This gives, when connected with a cistern
or water tap, hot water in three seconds after
the gas is lighted, either boiling, hot, warm, or
cold, the water being pure, and fit for cooking
purposes. It will deliver sufficient hot water
for washing hands in one minute, and, giving a
stream at any temperature, steadily and in-
stantly, when required, it will be found par-
ticularly valuable for many workshop purposes,
washing crockery, public lavatories, &c. It is
simple, cheap, not liable to get out of order or
wear out, and is equal in power to the small-
size Instantaneous Water Heater above. Gas
supply required, 34 clear bore pipe and tap, to
obtain the maximum power. It will work at
a proportionate rate with any gas supply,
however small.

It may be attached permanently to the cold
water tap, as cold water can be obtained through
it, just as readily as hot, if the gas is not
lighted, and therefore it requires no fixing, and
may be connected permanently with the ordi-
nary cold water tap with an india-rubber tube.

If frequently used for long periods in a

No. 247.

confined room the products of combustion should be carried away, as all Instantaneous
Water Heaters vitiate the air rapidly. ;

FRECE,
No. 247. Instantaneous Water Heater, without burner, in nickel-plated case, $3.00
With burner, (No. 47) complete, as engraved, ; ; ‘ Gris 5.00

8 FLETCHER’S LABORATORY APPARATUS.

FLETCHERS PATENT SOLID FLAME BATH
HEATER.—tThis consists of a strong galvanized tank 14 inches in
diameter and 20 inches high. The heat is obtained by the solid flame burner No. 48,
By turning the gas down so that a small flame is ob-
tained, the heater can be kept ready for instant use,
day and night, in hospitals, or in case of sickness, at a
cost of a few cents for twelve hours.

INSTRUCTIONS.—Fill the cistern (about 7 gallons)
with water, remove the burner, light it, and replace it
in the recess under the cistern. If lighted in position
it is liable to light back at the jet inside the tube, and
make a smell. See that the gas does sof burn inside
the burner tube. For a child’s bath half fill the cis-
tern ; this will be ready in about half an hour. For
a full-size bath it will be ready in two hours, and will
keep hot two hours after the gas is turned out, or the
gas, if required, may be turned low. When wanted,
open the tap and run the water into the bath. The
apparatus can stand ona shelf in a corner, or can be
made to fit any recess.

It will supply sufficient hot water to make a 30 gal-
lon warm bath in 2 to 2% hours.

HEATER, ONE-TWELFTH FULL SIZE.

Ie Oe
Complete, in strong galvanized iron, . . : : , : $10.00
Larger sizes for hospital use made to order, in galvanized iron or copper.
A small pattern in copper is now in hand for use in Lavatories, Sculleries and for
Hairdressers’ use. The stock pattern will hold two gallons ; but any size can be made
to order.

No. 1% NEW SOLDERING IRON HEATER.—This
heater has been recently remodeled, and is now constructed on the principle of the effi-
cient Fletcher Solid Flame Burner. It is a simple and strong arrangement requiring
no more gas than an ordinary lighting burner.

This heater is extensively used by tinsmiths, plumbers, electrotypers, etc., etc. It
is particularly useful to plumbers, dispensing with the annoyance and trouble of carry-
ing furnace and coals in doing work outside of the shop. It can be carried in the kit,
and attached to any gas burner in the house where they may be employed. The heater
is wide enough to accommodate two ordinary size soldering bits, which can be used
alternately.

PRICE, with dome for economizing heat, ; é ‘ ; a $1.75

FLETCHER’S LABORATORY APPARATUS. ae

Foot Blowers.

No.9. FOOT BLOWER—NEW
PATTERN.—This pattern, by revers-

ing the position of the blower, does away with
the risk of mechanical injury to the disc, and
obviates the necessity for a wood casing or
protection. It also prevents the valve from
picking up dirt from the floor, keeping the whole
arrangement cleaner, and the valves in more per-
fect order. Sizes as Fig. 9.
PRICES;

No. 9, Foot Blower, new pattern, . $5.00

No. 9a, Foot Blower, new pattern, . 6.00

No. 94, Foot Blower, new pattern, . 8.00

No. 9. FOOT BLOWER.—

This is a simple, compact and powerful
arrangement. The step for the foot is very
low and enables the blower to be used with
ease whether the operator is standing or
seated. The pressure is perfectly steady
and equal. Ifthe rubber disc is distended
until forced against the net, the pressure
can be increased to almost any extent de-
sired. It will give, if required, a heavy
and continuous blast through a pipe of %
inch clear bore. Three sizes of this Foot
Blower are in stock.

PRICES.
No. 9, Foot Blower, . . . . $4.00
No. 9a, * “y Be tg Nag RD
NOE Oo Oe ARR ec ke ae
Extra rubber discs for No. 9, each, .50
ee 6é 66 6é No. ga 6eé ‘ 75
“é 6é » 66 6é No. 96, 6é I.00
Portia nets; each) 22 wi eecuk .50

No. 94, (price, $7.00,) is sent out with the No. 41
B and C Petroleum Furnaces.

These Blowers are supplied with the reservoir sepa-
rated, to hang up out of the way of mechanical injury,
as shown in cut. A great advantage is obtained in blow-
pipe work by attaching a stop-cock to the air-pipe,
thereby controlling the blast as with the mouth. Stop-
cocks furnished for this purpose at a cost of $1.00.

PRICES—Suspended reservoir, . . . $2.00
Bellows to operate the same, . 3.00

THESE ARE THE ONLY BLOWERS IN EXISTENCE
GIVING ABSOLUTELY STEADY AIR PRESSURES IN
ALL POSITIONS.

MOLDED CARBON BLOCKS

for supporting work under the blow-pipe. Cleanly,
perfect non-conductors, and everlasting. These are
circular, hollow on each face, and 4 inches diameter.
Price, 50 cts. each.

INDIA RUBBER TUBING for

gas and blast connections, all sizes. All tubing is
extra, and is not furnished with the apparatus, unless
specially ordered. —

IO FLETCHER’S LABORATORY APPARATUS.

PLETCHER'S
Hot and Cold Blast Blow~Pipes.

FLETCHER’S HOT BLAST MOUTH BLOW-PIPE.—
For CANDLE, LAMP or GAs.—The results obtained with this blow-pipe are such that
there is little doubt it will eventually totally supercede the ordinary form for every pur-
pose. It not only gives temperatures never approached with the old blow-pipe, but it is
in every respect more convenient, easier to use, and better adapted for every class of work.
With the same amount of blowing as with the common form, this blow-pipe will do
nearly double the work ; if high temperatures are not required, the labor of blowing is
reduced in proportion. The improvement consists in coiling the air tube into a light
spiral over the point of the jet. This coil takes up the heat which would otherwise be
wasted, and utilizes it by heating the air in its passage.

No. 30. FLETCHER’S HOT BLAST MOUTH BLOW-
PIPE. Specially designed for Patented Dec. 25, 1877.
Jewelers, Dentists, Plumbers, etc. This
has nearly double the power of the old
mouth blow-pipe. Two patterns of

this blow-pipe are manufactured, taper No. 30. Taper Shaft.
shaft and straight shaft.

PRICES.,
No. 30. Taper Shaft, brass, . $0.65 No. goa. Straight Shaft.

No. 30a. Straight Shaft, . . .55
No. 304. Straight Shaft, with
hard rubber mouth-piece, . —.65

No. 30c. .Folding in case 5 %x
1% x¥% in., with both-hot
and cold blast jets, ;

Cpa Fa)

No. 31. FLETCHER'’S HOT BLAST CHEMICAL BLOW-
Pirk. “

nary chemical blow-pipe with the patent
hot blast arrangement. Hard rubber No. 31. Patented Dec. 25, 1877.
mouth-piece. This can also be supplied with Major Ross’ trumpet mouth- ~piece
at same price. Jets No. 65 size, unless otherwise ordered.

PRICE.—No. 31. Chemical Blow-pipe, . ° . : $1.25

No. 314. Folding in case 54% x2x
1¥% in., with both hot and cold blast
jets, and two mouth-pieces.

PRICE, ; ‘ ; $1.75

Any of the above blow-pipes, nickel-plated, 20 cents extra.

FLETCHER’S LABORATORY APPARATUS. II

THE AUTOMATON BLOW-
PIPE A is as perfect in its way as the
Injector Furnace, combining in the simplest possible
form every quality essential to a perfect blowpipe, and
forming what is believed will become the standard
and universal pattern for all purposes.

This blowpipe is mounted on a stand, with a uni-
versal ball joint, so as to enable it to be used at any
angle or in any position. The ball joint can be se-
cured fast in position.

It is simple, self-adjusting for both gas and air,
requiring only a slight motion of a small lever to
obtain instantly any flame, from the smallest to the
largest.

It has all the delicacy of the best mouth blowpipe
used with the utmost skill, with the power and ad-
vantages obtained with a mechanical blower.

A slight motion from side to side of the pin A
changes the power and character of the flame instantly
as required, or stops the power without extinguishing
-: the flame, the blowpipe being both self-lighting and

self-adjusting. 5

PRICE.

Automaton Blowpipe on stand, as engraved, for jets not exceeding
¥ inch bore, complete with one jet (No. 55 sent unless other-
wise ordered), : i : : i : p ; $4.00

Extra jet, any size to %-inch bore, . : ; ‘ ; .10

AUTOMATON BLow-PipE—A.

_. AUTOMATON HAND
gaaai> BLOWPIPE B._ The en-
graving showing the hand blowpipe,
with both tubes underneath, will be
found the most convenient pattern for
small work, brazing, annealing, etc.

| A-* PRICE.
r Automaton Hand Blowpipe. . $3.50
AUTOMATON BLow-PipE—B.

Extra jet, any size to %-in. bore, .10

%

AUTOMATON HAND BLOW-PIPE C with side tubes is
made in large size only, as the most convenient form of heavy work. The size requires
for its fullest power a 5£-inch clear
bore gas pipe and tap, and is adapt-
ed for the heaviest brass finishers’
and bicycle-makers’ work.

NOTE,—It is absolutely neces-
sary, in ordering any blow-pipe,
that the size or bore of air jet gen-
Am erally used shall be clearly stated,

wre : or that the work to be done shall
be distinctly specified. There is always a great difficulty in supplying blow-pipes
precisely to the requirements and ideas of users, unless their requirements are fully
understood ; and blow-pipes are frequently condemned when the fault is entirely with
the purchaser, who does not state his exact requirements or his business. A blow-pipe
should never be ordered unless the fullest information is supplied with the order, so that
the proper size can be sent. The power of a blowpipe depends not only on the size of
air jet and gas supply, but on the pressure of the air supplied by the blower. The
foot-blowers Fig. 9 and 94 are so perfect for all blowpipe work as to leave nothing
to be desired. After ten years they remain beyond the possibility of improvement in
the slightest detail, unapproached by any other form. The Automaton Blowpipes A and B
require Blower No. 9. Automaton Blowpipe C requires Blower No. 94. For Blowers,
see page 9. PR/JCE—Automatic Blowpipe C, $4.00.

AUTOMATON BLow-PipE—C.

[2 FLETCHER’S LABORATORY APPARATUS.

No. 1a. FLETCHER’S ORIGINAL HOT BLAST
BLOW-PIPE, (simplified form) for temperatures above the power of
ordinary gas and air blow-pipes. As it will be seen from the engraving, the air pipe is |
coiled round the gas pipe in aspiral form and both are heated by a small Bunsen
burner underneath, which is controlled by a sepa-
rate stop-cock. The g@=sa,
power of this arrange- ?
ment is about double’
that of an ordinary
blow-pipe ; and when
the jet ts turned down
to a small point of
flame it will readily
fuse a moderately thick
platinum wire. In
power it is nearly equal

No. 1a. to the oxy-hydrogen
jet, and it is a good arrangement both for chemical purposes and also for soldering and
general use. This form of blow-pipe is not designed for large work ; for this pur-
pose No, 8a and 8c are preferable. For small work it is the best gas blow-pipe ever
onstructed. For a large rough flame the Bunsen burner should not be used. The
advantage of the hot blast shows only when a pointed
flame is required having a high temperature.

RELL.

No. 1a, Hot Blast Blow-pipe, __. ‘ $5.00
With Fletcher’s new Mouth-piece, 60 cts. extra.

“No. 2a, HOT .BLAST BLOW-
PIPE.—Same construction as No. 1a, but
with upright jet.

PRICE.

No. 2a, Hot Blast Blow-pipe, é $6.00
With Fletcher’s new Mouth-piece, 60 cts. extra.

No. 3a. HOT BLAST BLOW-
PIPE.—Constructed on the same principle
as No. Ia, but with bench light arranged to swivel
so as to carry a light to the blow-pipe jet.

: PRI C £

No. 3a, Hot Blast Blow-pipe, . : $7.00
With Fletcher’s new Mouth-piece, 60 cts. extra.

No. 42. FLETCHER’S NEW PATENT BLOW-PIPE.

—The whole arrangement of this is totally different from that of any blowpipe yet made.

The ordinary form has been entirely discarded,and every detail has been specially designed
from practical experience as to the re-
quirements of allusers. The mouth-
piece is of all, the easiest to use, and
the heaviest continued blowing causes
no strain on the lips, whilst the
tongue has the necessary control over

' the opening.

The Blowpipe proper is held as a
pencil, the chamber on the stem stops
all condensed moisture, and prevents
the heat traveling up to the end.

PRICE.—With both cold blast
and patent hot blast, two jets, nickel plated mouth-piece in case, $1.50; mouth-piece
alone, for use with other blowpipes, 60 cents.

FLETCHER’S LABORATORY APPARATUS. 13

No. 4. IMPROVED HERAPATH
BLOW-PIPE. — For roe use, This is a

modification of the well-known Her-
apath, from which it differs in its
great simplicity, and in its power of
adjustment in any possible position.
The jet tube may be raised or low-
ered to any height, and turned in any
direction. A touch will direct the
flame on any point while the blow-
pipe stands in the same position on
-he table ; there being no necessity
for raising, lowering, or adjusting

No. 4b.

work before it.
ERECE£,
/No. 4, Improved Herapath Blow-pipe, . : $3.75
No. 44, Improved Herapath Blow-pipe, without the joint A, : 3.00
With Fletcher’s new Mouth-piece, (see No. 42), extra, . . j .60

No. 8§ MELTING ARRANGEMENT.—

For obtaining Ingots of Gold, Silver, etc., rapidly without the
use of a furnace. Reference to engraving: A, Crucible of
moulded carbon supported in position by an iron side plate. C,
Ingot mould. D, Clamp holding crucible and Ingot mould in
position, and swivelling on the cast-iron stand B. The metal to
be melted is placed in the crucible A, and the flame of a blow-
pipe is directed on it until it is perfectly fused. The waste heat
No. & serves to make the Ingot mould hot, and the whole is tilted over
a by means of the upright handle at the back of the mould. A

sound Ingot may be obtained at any time in about two minutes.

ERICH.
Melting Arrangement, with both wire and plate moulds, $3.25
Stand for Melting eee , ‘ ‘ ; 75
Wire Moulds, . ; ‘ : ‘ ; ‘ 1.25
Plate Moulds, . : ‘ 1.25
Extra carbon crucibles, without ‘slides, per ‘doz., + i 1.00
Extra carbon crucibles, with slides, per doz.,_ . ; 1.75

No. 8a. BLOW-PIPE.— Specially designed
for use with the above Ingot mould. The air jet is % inch
bore and requires a supply from a foot-blower.

No. ai : PRICE—No. 8a, Blow-pipe, ; ‘ : ci aes
No. 8c. BRAZING BLOW-PIPE.—A modified form of 8a for

use in the hand for brazing work requiring great heating power. The stop-cocks are
both ‘under perfect control of the thumb of the hand which holds the blow-pipe. The
air jet is % inch bore and requires a supply from a foot blower.

ier C EY

No. 8c, Brazing Blow-
pipe, with two lever
stop-cocks, as in en-
graving, ‘ $3.50

No. 8¢, Brazing Blow-
pipe, without stop-
cocks, ) $2.50

BLOW-PIPE JET TIPS for No. 4, No. 4d, and all mouth blow-

pipes. These jet tips screw on, and any size can be supplied.

7° 65 60 55 50 PRICE.

Blow-pipe jet tips, brass, each, . 10 cts.
Blow-pipe jet tips, platinum, each, 25 cts.

. e ee e gS
Bore OF Jets. Stubbs Steel Wire Gauge.

14 FLETCHER’S LABORATORY APPARATUS.

No. 8d. NEW MELTING AR-
RANGEMENT.—(I»provement on No. 8.)

For melting up to 3 ounces of gold or silver rapidly, with-
out the use of a furnace. For coal gas only. In this
arrangement the two parts of the ingot mould slide on each
other, to enable ingots of any width to be cast, and the
Blowpipe is, part of the rocking stand. Connect the blower
to the upper tube and the gas to the lower. When the
metal is melted in the shallow crucible of compressed char-
coal, tilt the whole apparatus over so as to fill the ingot
mould. A sound ingot can be obtained in about two min-
utes. Thousands of the old pattern are in use, and this
arrangement is far superior to any furnace for small work.
Very bulky scrap should be run into a
mass in one of the moulded carbon
blocks before being placed in the cruci-
ble. No flux must be used with the
carbon crucibles.

PRICE.
No. 8d. Melting Arrangement,
complete, . pie oe $PZ.00

Le Extra Carbon Crucibles, perdoz., 1.75
Engraving slightly under half size.

FLETCHER’S GAS OR PETROLEUM FORGE.—

As used at Woolwich Arsenal, Eng- <<
land. Invaluable for small forgings. ZA
Size of hearth, 15x18 inches. By
this simple arrangement, steel tools
can be forged without injury, by the s
use of gas. It will be found a perfect, aa
arrangement for Small Forgings Serer.
and Repairs.

It is perfectly clean. No nuisance
either in lighting or use.

Starting all cold, a slide rest tool
can be repaired or shaped in two
minutes.

INSTRUCTIONS.

Fill the hearth with coke, broken small, (cinders may be used, but are not so clean) ;
light the gas at the blowpipe, and use the blower. In a minute turn the gas out, and
then turn on again a very small quantity, not enough to burn at the blowpipe jel, but suffi-
ciently to visibly brighten the fire. When the heat is obtained, the forge may be worked
with or without gas, but a little gas doubles the power. THE GAS MUST NOT BURN AT
THE BLOWPIPE JET, EXCEPT FOR THE FIRST MINUTE. If gas is not available, the
vapor from the Gasoline Generator may be used precisely in the same way as gas. If
a hood is required, it will be furnished at $1.50 extra. It is not usually necessary if
coke is used.

Foot Blower No. 9b should be used with this forge.

The Blowpipe used in this forge is the ordinary pattern, Fig. 8e, and can be removed
for use as a blowpipe, making the whole apparatus complete for all small heating and
brazing work.

PRI CC fd
Foot Blower, No. 9b, new pattern, : ‘ ; : . $8.00
Blowpipe, No. 8e, . ; ; : : ; ; ; ; 4.50
Hearth, . 4.50

6 ft. Gray India Rubber Tubing, . . . 5-04 + sO
Forge complete, with Foot Blower, Blowpipe, etc., _—_.. . 18.00

FLETCHER’S LABORATORY APPARATUS. 15

No. 32. FLETCHER’S SPECIAL CHEMICAL BLOW-
PIPE, with folding stand,

adjustable at any height or angle.
It can be used either with the mouth,
or the small hand blower can be at- .
tached and the blowing done by the
finger. With this Blow-pipe is sup-
plied one jet with, and one without,
the patent coil, to enable a larger
variety of flame to be obtained.
The lamp or a weight should be
placed on the stand when in use.

PRICE, ; PACS BY OO

HAND BLOWER, as_

shown in No. 32. This is a very
small copy of the foot blower which is now so well known. When not in use it shuts
up flat for the pocket. The pressure of air is adjusted by a delicate lever tap on the air
tube. This will be found a great improvement on the mouth for blowing ; a steady
blast can be kept up for any length of time by the pressure of the finger, or by squeezing
in the hand. PRICE, $3.00. In case for travelers with spare rubber discs, $3.25.

Hand Blower and Chemical Blow-pipe, complete in case (5%
by 41% by 134 inches outside measure) for the pocket. PRICE, $4.00.

FLETCHER’S IMPROVED BLOW-PIPE LAMP.—The
wick holder will be found one of the best yy. worper tuRNeED ee" .
forms ever made, in addition to the fact uate a REVOLUTION.
that the angle can be adjusted as required yw
by simply revolving it in the fixed collar.
The wick holder lifts out for refilling.
Lamp engraved half size.

PERI-CE. {h ty
Blow-pipe Lamp, polished brass, $ .75
Blow-pipe Lamp, nickel plated, 1.00 WICK HOLDER END VIEW
Blow-pipe Lamp, for tallow, . 30 Ga

\

A modified form of this lamp
is made for tallow or solid fats for travel-
ing. When tallow, etc., is used, an oper-
ation must be commenced by first blowing
the flame downwards to melt the solid fat
round the wick, The heat of the flame AM
will keep it fused afterwards for any length of time. This pattern can be used with solid
or liquid fats of any kind, and is a perfect traveler’s lamp. Size when closed, 2 in. by 2 in.
Trim the wick always while the lamp is hot, when hard fats are used. The curved bottom
of the lamp should stand on the open end of the cover when in use. This makes a steady
base and admits of adjustment of the angle of wick without reversing or re-trimming.

No.5. FLETCHER’S BLAST BUNSEN

for high temperatures. Thisis a Bunsen combined with a power-
ful blow-pipe, and is one of the most generally useful arrange-
ments known for the chemical laboratory. The blow-pipe flame
obtained with the blast tube, when confined by the loose cap B,
is compact and extremely powerful owing to the fact that the air
mixture is partially made before the blast begins to act. When
the object to be heated is fragile it can be warmed by the Bunsen
flame and the blast slowly turned on by the tap C. The conve-
nience of having a powerful flame at command under an ordi-
nary retort stand without the necessity of re-adjusting the height
or position wili be fully appreciated.
ze PRICE.
No. §. No. 5. Blast Bunsen Burner, . y i ; $3.50

16 FILETCHER’S LABORATORY APPARATUS.

FLETCHER-PLATTNER BLOW-PIPE FURNACE,
FOR CAPSULES, OR CRUCIBLES.—3,-inch diameter. This

is made of Fletcher’s Patent Non-conductor, which does not require renewing, and does
not require the objectionable wire support of Plattner’s pattern, which generally fails at the
most critical moment. This pattern, like that of. Plattner,
has the hole for the blow-pipe flame at the side; but if the
hole is at the bottom, and an upright blow-pipe is used, the
improvement is very great. With the blast Bunsen No. 5, as
shown in the cut, and a good foot blower, 100 grains of cast
iron can be perfectly fused in two minutes; the temperatures
being, at the same time, under the most perfect control.

PRICE,
Blow-pipe Furnace, with bottom or side hole,

and one cruciile 360. “n/a sae $0. 30
Blow-pipe Furnace with blast Bunsen, taps for

gas and air, and furnace support, without

MpRWOT, AS TUOT CN aes 4.25
Clay Crucibles, per doz., ees 60
CARY ODOURS, er: ODE oo ner al aks aes os .50
Furnace Support, .. . -65

For Blowers, see ‘page 9.

TAPS FOR GAS should be what are known as main cocks, with
a large way through. These we can supply, with nozzle for India-rubber tubing 3%, or
%-inch bore. Forthe small heating burners, ordinary taps will do if the way through
is good and clear, but high powers must not be expected with a deficient gas supply.

Ir IS A GREAT ADVANTAGE in all gas furnaces if the gas supply tap and pipe are
large and clear, so as to give as great a pressure of gas as possible at the burner nozzle.

Gas Furnaces without Blast.

FLETCHER’S UNIVERSAL FURNACE for high tempera-

tures, requiring neither blast nor attention.. Of these furnaces thousands are at
present in use for chemical purposes, enamel burning, heating soldering irons, jewelers’
and dentists’ work, &c., and their use is being rapidly extended to all purposes where
rapidity and certainty of results are required without trouble. These furnaces are made
in two distinct types, one, No. 11 and 2, with a perforated dome over the crucible and
muffles to attain the maximum heat ; the other as in No. 15 and 16, with a side chim-
ney and lid over the crucible. The power and rapidity of working depend in each case
on the length of the chimney used. The pattern with side chimney, although more
convenient in use, is slower in working.

DESCRIPTION OF BURNER.—These furnaces are supplied with an improved pattern
of burner, which gives a number of concentric circular flames as does the multiple Argand
burner, used in large lighthouses, and is illustrated in the cut of the No. 15 Furnaces.

The gas enters a chamber at the bottom of the burner through a device similar toa
Bunsen burner, mixing with air as it enters, and is burned at the upper ends of a series
of concentric tubes, furnishing air-spaces alternately with those supplying the mixture
of gas and air. The whole burner is constructed of iron, and will be found better able
to withstand an intense heat, more durable, and quicker in its operation than the old
pattern, with gun-metal tubes.. In case metal should be spilled into the burner, it can
be easily taken apart for its removal.

Each part of the burner is lettered, and in case of accident, it can be supplied at a
small expense, by specifying the letter on the piece desired.

Mr. Fletcher has recently perfected a new pattern of burner (see page 20) which
will work all the draft furnaces described in this section——and which will be furnished,
if desired, in place of the regular concentric flame burner,

FLETCHER’S LABORATORY APPARATUS. 17

No. 15. CRUCIBLE FUR-
NACE.—This will take crucibles up to 4x3%
inches and with %-inch gas pipe, and a pressure
of gas equal to 2 inches of water, supplying about
50 feet per hour, will melt 3 or 4 lbs. of brass in
about 30 minutes, and the same quantity of cast-
iron in about 60 minutes from the time the gas is
first lighted. It will melt a crucible full of
silver or gold in 30 minutes. The crucible
will hold and melt about 6 lbs. when quite full.
It is made in a very substantial manner, and is
recommended as a first-rate furnace for manu-
facturing jewelers, reducing photo. waste, &c.
In using this pattern of furnace, the narrow end
of the plumbago cylinder which surrounds the
crucible is always put downwards. The use of
this cylinder is to keep the flame in contact with
the crucible up to the top. The flame is then
deflected by striking against the lid and, turn-
ing downwards, leaves the furnace by the chim-
ney at the lower side.

The lid never gets very hot, and can be
lifted away by the handle across the top; it is
now made of the patent non-conducting mate-
q rial, in one piece, with an opening in the centre
for convenience in examining work.

No. 15. DIRECTIONS.

When the burner is first lighted, the milled hangle at the gas-entrance must be turned
on completely, and the gas should be turned on full head. After it is lighted the gas should
be partially turned off by screwing in the regulator at the gas entrance until no blue
flame is visible at the hole in the elbow of the chimney. After the furnace has been
lighted one or two minutes, and becomes hot, the flame will, and should, be seen through
the hole in the chimney-elbow. When the proper adjustment is made, and the gas
burns satisfactorily, a re-adjustment may be avoided by turning off the gas at the main
when the operation is completed. To secure the best results, use at least six feet of
chimney pipe, and if it can be connected with a chimney flue, so much the better ; the
better the draft, the better the furnace will work. ‘The gas should be supplied from a
half-inch tap, and the rubber tubing used should be not less than half-inch bore.

Attention should be given to the proper regulation of the gas supply. - If too much
is used, the gas is partly wasted and the chimney becomes red hot; if too little, the
proper duty cannot be obtained.

To take the burner apart, remove the top plate and the sheet iron casing, then
unscrew the three bolts, after which the parts of the burner can be easily separated.

In putting the burner together care should be taken to get the circular openings
through which the bolt passes fair with each other, as they serve to conduct the gas from
one section to the other.

The rings of wire gauze must be adjusted so as to be concentric with the burner, or
an explosion will ensue when the gas is turned off.

LadG £8;
No. 15, Crucible Furnace, complete, . 3 ; : ; . $18.00

A

PRICES OF SEPARATE PARTS.

Plumbago Crucibles, No. 3, each, : ; ; : : Sik ee <5
Plumbago Cylinders, . ; ‘ ’ ; i .60
Crucible Tongs, 17 inch, ‘ ‘ : ; ! 3 : 3 75
Crucible Tongs, 12 inch, ; : ; ; : ; : ; .65
Fire clay casing, . ; , ‘ ‘ : ; : ; 3.00
Lid, ‘ ; : ; : : ; . ; : , i 1.00
Grate, . ; ; ; : ; ; : ; i ; ; 1,00

Burner, é : ; ‘ ; ‘ : : : ‘ 10.00

18 FLETCHER’S LABORATORY APPARATUS.

No. 11. SMALL LA-

BORATORY FURNACE
for crucibles. This takes crucibles ow Z
up to 2% by 2¥ inches outside, and an ¢

with a 6-ft. chimney, as supplied with
the furnace, will melt copper, gold,
silver, &c., in about ten minutes, or
cast-iron in 30 minutes from the time
the gas is lighted. Small muffle
fittings E, No. 2, with muffles 2% by
3 by 2% inches inside, can be sup-
plied with this furnace at an extra
cost of $7.00.
The burner is of the same construc-
tion as the No. 16.
This furnace can also be supplied AA
with the new burner. See page 17. Re es
No, 11.
ARILCE.
No. 11, Small Laboratory Furnace,
No. II, ae - including mufile fittings (see No. 2), 19.00
Plumbago Domes, each, : ; ; ; ;
Plumbago Crucibles, No. 0, each,
Crucible Tongs, 12 inch.,

No. 16. SMALL CRUCIBLE
FURNACE, taking crucibles up to 2%

by 2% inches outside. This pattern is more espe-
cially designed for gold, silver, copper, etc., and, as
sent out, with 6 ft. chimney and single lid E, is amply
powerful,

The burner is of the same construction as the new
No. 15, but smaller.

Reference is made to the description of that Fur-
nace for full directions for operating the No. 16.

TRICE.
No. 16. Small Crucible ena eee $13.00
Extra Cylinders, each, ; ; 25
Extra Grates, each, . ; ; : .40

No. 14.. PERFECTED LADLE
FURNACE, with Fletcher’s new Solid Flame

= = Heating Burner. This is a better ladle furnace in

re Hi every respect than any yet made. The burner is simple,
A safe and works equally well with any gas supply availa-
I ble, giving proportionate speed of working. The worst
possible accident to the burner can be remedied in a
ee minute at the cost of a few cents. All other patterns of
a= ladle furnaces are discontinued.

PRICE.
No. 14. Ladle Furnace, . : . $5.00

No. 14. a
CRUCIBLE TONGS.-— Malleable iron, a very neat pattern.
PriCae Ss;

12 inch, ; ; : ; ‘ i ; : ‘ : 65 cts.

Beene oeeraeaeee Ce ee : ‘ c : . § $ ts J i ‘ 7c cts.

FLETCHER’S LABORATORY APPARATUS. ode

- MUFFLE FURNACES

For assayers, enamelling, and all purposes where exact
temperatures are required, not exceeding the fusing
point of copper. The burners for these furnacesareof #r> ie \
the same construction as the No. 15 Crucible Furnace.

Size No. 2. (See cut page 18.) Mufile 23/ x 3x 2% mr Mh ve i
in. inside. neces a -inch bore gas pipe and tap. | | I
PGE: 4:7, $18.00
Extra Muffles, Peri an tal be sana pate each, “FS
Extra Muffle Domes, sete it 75

Size No. 3. Muffle, inside clear working space ex-
clusive of neck 3x4x2¥% in. high. Requires
¥4-inch bore gas pipe. Chimneys 6 feet high are
included in prices, extra chimney 20 cents per foot
for all patterns of furnace, . . . Price, $20.00
PRtr a WE oy cg ee ee Oe * »
Extra Muffle Domes, at As

Size No.4. Inside muffle space 3K X 5 x3in. high,
Requires ¥8- inch clear bore Aa pipe and tap.

: ‘ Price, $25.00
Extra Mufiles, we le ay oe OA 1.25
Extra Domes, . me 1.25

Size No. 5. Inside muffle space 4% x7xX 334 in.
high. Gas supply asabove. . . Price, $35.00
Extra Muffles, . . oes Caeh. 1.50
Extra Domes, in a a 1.50

Plumbago fittings and crucibles must be
heated slowly the first time they are used.

, i"

GENERAL INSTRUCTIONS
FOR FLETCHER’S GAS FURNACES WITHOUT BLAST.

A chimney or stove pipe 8 or Io feet high may be used as a fixture, and the draught
partially stopped with a damper or slide when lower temperatures are required, the gas
being turned down in proportion ; the guide for the proper adjustment being that UNDER
ALL CIRCUMSTANCES THE FLAME MUST JUST COVER THE CRUCIBLE OR MUFFLE, but
not extend into the chimney sv as to make it red hot. When the flame covers the cruci-
ble or muffle the gas is doing its extreme duty under the most favorable circumstances,
without waste. Particles of flux should not be allowed to fall on the fire-clay casing,
where the parts touch each other ; and the power of the furnace should not be urged too
far by the use of very long chimneys, as there is danger of the fusion of the fire-clay parts
together so that they cannot be separated. Fire-clay fittings, as a rule, cannot be safely
used for temperature much exceeding the fusing point of cast iron. Plumébago fittings
and crucibles must be heated slowly the first time they are used. After the first time
they may be subjected instantly to the full power of the furnace without injury.

A ¥-inch gas-pipe with a large tap is ample for melting cast-iron, with a moderately
good gas pressure ; but if a pipe has to be laid specially it is well to have a margin of
power if required. Care should be taken not to spill any of the melted metal on the
burners; but if an accident happens and damages the burner, extra parts may be
obtained. ‘They are all lettered for convenience in ordering duplicates.

THE FLAME MUST IN ALL CASES’ COVER THE CRUCIBLE OR MUFFLE TO OBTAIN
PROPER RESULTS.—If the gas supply is deficient the tap is generally in fault, and should
be replaced with what is known as a %-inch meter tap, and India rubber tubing without
wire must be used. If muffles are required with slits for assaying or oxidyzing, it should
be stated when ordering, or slits may be easily cut in the back with a penknife before
the muffle has been used. After it has been exposed to high temperature the plumbago
does not cut readily, and requires more care than if cut before.

20 FLETCHER’S LABORATORY APPARATUS.

New Blast Gas Furnaces.

No. 41. FLETCHER’S PERFECTED INJECTOR GAS
FURNACE for Metallurgists, Jewelers, Chemists, ironand brass cast-
ings, manufacturers of artificial gems, and other purposes where an ordinary furnace is
useless or unreliable. This furnace, founded on the well known Injector Furnace, is,
beyond comparison, the best and simplest gas furnace made.

It has been found that, in working at extremely high temperatures, the ring which
holds the gauze is liable to be fused. To prevent this, a new burner has been designed,
in which the ring is entirely dispensed with, and the gauze cap is pushed up from the
back of the burner against a small shoulder inside the nozzle of the burner. The bur-
ner is in one casting, and, therefore, there is no tendency for
the nozzle to get hot, as in the former pattern. See that the
gauze is pushed up from behind to within about ¥/ inch of the
nozzle,

POWER AND SPEED OF WoRKING.—These are practically
without limit, depending only on the gas and air supply, and ~
are under perfect control. With %-inch gas pipe andthe [MW
smallest foot blower, the small furnace |
will melt a crucible full of cast-iron
scrap in thirty minutes; starting “'R SHECK
with all cold. Allowing five cubic _.@
fect of gas for heating up, it re- aj, QUue
quires about four feet of gas for every
pound of cast-iron melted. For small
work it is as cheap as a coke fur- ==
nace, and not one quarter the trouble. ——=

BLowinc.—The: quantity of aig... ee
required is exceedingly small, much No. 41, for Gas.
less than even the original Injector Furnace, and may be supplied with the No. 9a or
94 foot blower. The new pattern of foot blower is recommended, as the old pattern
blower is liable to pick up dirt from the floor, throwing it against the gauze of the bur-
ner,and stopping the proper working of the furnace until cleared away.

The reverberatory dome D shown in the engraving is unnecessary except for high
temperature and rapid working.

INSTRUCTIONS.

Gas supply required, 2 lb. size furnace, 34 in. pipe=10to 40 ft. of gas # hour.
Gas supply required, 6 lb. size furnace, % in. pipe=25 to 60 ft. of gas ¥ hour.

See that all gas taps have a large clear way through. High temperatures and rapid
working require a free supply of gas.

To adjust a new furnace to its highest power :—Turn on the full gas supply, light the
gas, connect the blower with the air way full open, work the bellows and then put the gauze
nozzle of the burner tight up against the hole in the casing. If the flame comes out of the
lid about 2 inches, the adjustment is right. If the flame is longer, enlarge the hole in the
air jet until the proper flame is obtained, or reduce the gas supply ; if smaller, or not visi-
ble, turn the air check until the flame appears.

Keep all fluxes away from the furnace jacket.

3efore stopping the blower draw the burner back from the hole.

If the blower is worked by power the furnace must not be forgotten. If left and
neglected the heat becomes sufficient to fuse any crucible.

A thin layer of quick-lime on the bottom will prevent crucibles adhering when very
hot. °

Plumbago crucibles must be heated very slowly the first time they are used.

PRICES OF PERFECTED INJECTOR FURNACE, No. a1. FOR GAS.

Furnace A, taking No. 1 crucible, capacity 2 lb. copper, complete, . $ 9.00
Furnace B, taking No. 3 crucible, capacity 6 lb, copper, complete, . 10.50
For foot blowers, see page 9.

FLETCHER’S LABORATORY APPARATUS. 21

No. 4I. PERFECTED INJECTOR FURNACE — For
REFINED PETROLEUM. — The illustration shows the Perfected Injector
Furnace fitted for the use of refined petroleum as a fuel,
by the adaptation to it of a number of burners, such as
are used in the No. 400 furnaces. The arrangement is
in every way as simple and effective as when gas is used,
requiring no more trouble or attention.

It has been fully tested in the performance of metallur-
gic operations, and has been found equal to the gas furnace
in efficiency, and it is now confidently recommended to
those to whom gas is inaccessible, who wish to obtain a Rij
simple, cheap and effective apparatus for obtaining high iin suit
temperatures.

The number of burners
used will vary with the
size of the furnace, and a
bellows of proportionate
size will be required.

Cast-iron can be fused’
without difficulty, and in — f
a short time. ee a Se = =

All oil furnaces work No. 4, 1, for P. etroleum.
better with the ‘“new pattern ” foot blower (see page 9), on account of not picking up
dirt from the floor, and obstructing the burners therewith.

PRICES OF PERFECTED INFECTOR FURNACES
FOR REFINED PETROLEUM.

Furnace A, taking No. I crucible, two burners, without blower, . $12.00
Furnace Bb, taking No. 3 crucible, three burners, without blower, i
Furnace C, taking No. 6 crucible, four burners, without blower, Si aS OD

No. 141. PERFECTED INJECTOR — COMBINED
CRUCIBLE AND MUFFLE FURNACE.— For Gas or

GASOLINE, — This is supplied
with muffle fittings. and can be
used either as a crucible or
muffle furnace. The illustration
shows it as arranged for use
with the muffle. When used as
a crucible furnace the casing is
turned on end, and a large round
lid is used (see page 21). In this ;
case the hole opposite the one
used for the burner should be
stopped with the taper plug fur- ~
nished for the purpose. One
size only is made, corresponding *
to the B Injector.

The same burner is used for
gas or gasoline (see gasoline ap-
paratus, page 26). When refined
petroleum is used the burner for Furnace C, No. 41, is sent out with special fire clay
parts.

mT

PRICE.
Combined Crucible and Muffle Furnace, for gas, . $15.00
Combined Crucible and Muffle Furnace, for gasoline, including
Generator, without blower, . : ; : ‘ é 30.00
Extra Muffles, ; : ; 1.50

The No. 9% blower (page ey is vuined sith this furnace,

Orders should specify particularly. for *‘ sas’ or “* casoline” or *\ refed telraloum 2

22 FLETCHER’S LABORATORY APPARATUS.

No. 241.— PERFECTED INJECTOR — COMBINED
CRUCIBLE AND MUFFLE EU BNer —.For REFINED

PETROLEUM ONLY.—The
casing of this furnace is of
the size C, but with three
burners, using refined pe-
troleum as a fuel. It is
supplied with muffle fit-
tings, and can. be used
either as a crucible or
muffle furnace. It ope-
rates precisely as No. 41

PRICES.

No. 241. Combined Cru-
cibleand Muffle Furnace, ~
for refined petroleum,
without blower, . $21.00

Extra Muffles,. . 1.50
The No. 9é blower is

required with the furnace.

No. 40c. GASOLINE GENERATOR AND FURNACE.

inmate

j
Mt

ie oo \\\

This consists of the No. 40a furnace and burner and a small size of Fletcher’s
Gasoline Generator. It operates precisely like the No. 44, page 26, the same directions
for use serving for both furnaces.

To those desiring a small furnace for high temperatures, where gas is not available,
this one will be found particularly satisfactory.

PRICES,
Gasoline Generator for No. 40c, : ; . $6.00
Furnace No. 4oc, Generator, Blower and T ubing complete for use, . 16.50
Fire Clay Pot, extra, : ‘ ‘ ‘ ‘ ; i , ‘ 75
Fire Clay Cover, éxtra; i ‘ ‘ ; % : ; ; 35
Plumbago Crucibles, No. on each, ; ; ‘ ; ‘ : i .20
Crucible Tongs, ; : ‘ ‘ ‘ -65

—_ ———S He foot-blower furnished 1 cae as cies is ees Oa.

FLETCHER’S LABORATORY APPARATUS. 23

No. 40. FLETCHER’S NEW CRUCIBLE FURNACE—

Owing to the discovery by Mr. Fletcher of a singularly perfect non-conducting furnace
casing, we are enabled to produce the first really simple gas furnace ever constructed.
This material is only about one-sixth the weight of fire clay, and has not one-tenth its
conducting power for heat.

The furnace consists of a simple pot—for holding the crucible—with a lid, and a blow-
pipe, all mounted on a suitable cast iron base. As compared with the ordinary gas fur-
nace it appears almost a toy, owing to its great simplicity.

The casing holds the heat so perfectly that the most refractory substances can be
fused with ease, using a common foot blower. Half a pound of cast iron requires from
7 to 12 minutes for perfect fusion ; the time depending on the gas supply and pressure
of air from the blower.

The power which can be obtained is
far beyond what is required for most
purposes, and is limited only by the
fusibility of the crucible and casing.

The crucible will hold about 10 ounces
of gold.

An ordinary gas supply pipe 75; or 8
will work it efficiently. It requires a
very small supply of gas. About 10
cubic ft. per hour is sufficient for most
purposes. ce —.@

Crucibles must not exceed 2} by 2 ===

inches. Any common blow-pipe bel- ee ete
lows will work the furnace satisfactorily No. 4o. Patented.
except for very high temperatures (fusion of steel, etc.), for which a heavy pressure of
air is necessary. ,

PRICE.
No. 40. Fletcher’s New Crucible Furnace, without Blower, . $3.50
No. 9. Foot Blower, ‘ 5 : : : ‘ i . 4.00
No. 9a. Foot Blower, large high pressure, ; ; ‘ ‘ FeO
Plumbago Crucibles, No. 00, each, : ; ‘ : ‘ ; “ 4Q2O
No. 40. Fire Clay Pot, extra, . ; ; ; , ; i 5 GATS
No. 40. Fire Clay Cover, extra, whira. ‘ : ; Pate: he

,

No. 40a. CRUCIBLE FURNACE WITH IMPROVED
GAS BURNER.—-This Burner is made of the same pattern as that
used with the ‘ Perfected” Injector Furnace. It is almost noiseless in its action, and

works with a very small gas supply,
producing much more economical
results than any gas burner here-
tofore used for the purpose of heat-
ing furnaces,

DIRECTIONS.

Turn on the full gas supply, light
the gas, connect the blower with the
air way full open, work the bellows
and then put the gauze nozzle of the
= a burner tight up against the casing.
Lene nae The air supply should be such that
a flame about two inches long will play out of the hole in the cover, and it may be
adjusted by turning the thumbscrew on the side of the burner.

The amount of air and gas used by this burner is very small. Care should be taken

that the right proportion of each is used. A very light but steady blast of air will give
the best results.

PRICE, No. 40a, Perfected Burner, without blower, . , j - $4.50
Extra Burner, ; : ; ; ; : EC

24 FLETCHER’S LABORATORY APPARATUS.

No. 4ob. CRUCIBLE FURNACE FOR REFINED
PETROLEUM.—The gas furnace No. 40 having proved itself so thor-

oughly efficient and satisfactory, a modified pattern has been designed, retaining all the
peculiar ae of the original, but burning refined petroleum instead of gas as fuel ;

. and improvements
recently made en-
able us to confi-
dentlyrecommend
it as being fully
equal in efficiency
to the gas furnace.

The burner for
this furnace is
constructed upon
the principle of an
atomizer; this of
course dispenses
with a wick, This method has proved the most efficient of any we have experimented with.

The recent improvements consist in a device for regulating the supply of oil, which
is operated by the milled nut (marked A) shown on top of the reservoir in the cut, and the
addition of an annular jet of air, which is regulated by turning the sleeve (marked B).

This burner is so made that it can be taken apart and cleansed, in case there should
be any obstruction to its proper working. Remove the burner from the reservoir, by
unscrewing the small screws; draw out the oil tube, which is’ operated by the milled
nut A, take off the sleeve B, and remove the inside tube.

‘The same furnace and stand are used for either gas or petroleum, the Jamp being fitted
for adjustment in place of the gas burner, so that the same apparatus can be furnished
for burning either gas or refined petroleum.

There is no doubt that these furnaces in one or both forms will become a necessity in
every workshop, as they fill a place intermediate between a blow-pipe and a large fur-
nace—which has never yet been filled ; whilst their strength, cheapness, simplicity, and
general usefulness recommend them to all.

The foot blower, No. ga, price $5.00, will work this furnace satisfactorily.

This size takes crucibles not exceeding 2% by 2 inches, capacity % lb. of copper or
about ro ozs. of gold.

PREC i.
No. 404, Crucible Furnace for Petroleum, without blower, ; ; $5.00
No. 9a, Foot Blower, . ‘ : ; ; ‘ . ; : 5-00
Plumbago Crucibles, each, . ; : ‘ : ; ‘ ‘ 0.20

DIRECTIONS FOR OPERATING PETROLEUM FURNACES.

The oil supply is increased by turning the milled nut A, in the direction of the
arrow-mark on the reservoir. <A plentiful supply should be used when the furnace is first
lighted, and afterwards reduced. By working the bellows a spray of oil will be blown
into the furnace, which should be lighted with a wisp of paper. The sleeve 2 should
be screwed on to the pipe at this time, and then gradually screwed off—to adjust the air
supply. When the proper proportion of oil and air is attained, a blue flame streaked
with red will appear at the top of the furnace, and a yellow flame will flutter in and
out of the hole below. A few trials will be necessary before the adjustment will be
easily made.

PLUMBAGO CRUCIBLES—Designed especially for Fletcher’s

Gas Furnaces. These crucibles are round, made from special patterns, and are the most
durable in market.

PRICES:
No, 00. 2 inches diameter, 2% inches high, ; ; ; . . 20 cents.
aaae. <> ae 2% ; : ; Sie ae
“eé we ee 6é 3 ce s z é fs 22 ee
“6 2. 5: 6é “ce 3% “é ; 5 ¢ : 23 66
6é < 3% ce 6eé 4 sé : ; < : 25 66
sé 6. 4% ee ee 6% ce : j 60 6é

Crucible Covers, per doz., ; ; ‘ ; : : ; we ad a ise

FLETCHER’S LABORATORY APPARATUS. 25

No. 44. FLETCHER’S GASOLINE GENERATOR AND
FURNACE.—For Hicu Temperatures. The well-known Injector

Gas Furnace, which in power, simplicity, and convenience, has not been approached by
any known furnace, can now be supplied with a small, simple, and safe arrangement for
burning the vapor of the light petroleum or gasoline, giving a power and efficiency
fully equal to that which can be obtained by a large gas supply. The arrangement is in
every way as simple as when gas is used, requiring no more trouble or attention.
= It not only equals a gas
furnace in every respect, and can
be used where gas is not available,
but, in addition, it gives a flame
and heat of absolute purity, fitting
it for the most delicate chemical
operations where gas cannot be
M1) == used owing to the presence of
a es HS ¥= = sulphur and other matters.
| The ordinary pattern of In-
jector Furnace is used in precisely
the same way as with gas, the
only difference being that a branch
pipe is taken out of the air supply
and connected to the lower tap A
on the generator, and a tube is
carried from the upper tap b, to
the side tube of the Injector
burner, marked ‘‘ gas.” The
quantity of vapor required is
i adjusted by the lower tap A when
——— the furnace is working, and the
flame must be just visible at the hole in the lid, exactly as when gas is used, the instruc-
tions being precisely the same for both fuels.

To charge the generator, pour gasoline in the funnel cock until it overflows at the
small tap C in the side, close the funnel cock and also the overflow tap. It will then
work for about ten to twelve hours at the full power of the Furnace.

Gasoline varies much in quality. It must, when a few drops are poured on a plate
or the hand, evaporate quickly and completely, leaving no greasy stain, and if good will
produce more vapor than the furnace can burn at its maximum power. All the tubing
used must be perfectly smooth inside, or the power of the furnace is greatly reduced.

At the conclusion of an operation close both taps on the generator. It can then be
left for any length of time ready for instant use. For ordinary meltings the generator .
can be used about thirty or forty times without refilling.

This arrangement is strongly recommended, not as a makeshift, but as a¢ /east equal
in power and convenience to the best gas furnace ever constructed.

5

PRICES.
Gasoline Generator, for No. 44, . ; ¥ i . ; . $15.00
Furnace A, Blower, Generator and Tubing complete for use with
either gasoline or gas, . ; ; : ; , : ; 31.00
Furnace B, Blower, Tubing, and Generator complete, . : ; 32.50

The engraving shows the B size Furnace, Generator and Blower, as when in use.
Scale, 1 inch to the foot.

The foot blower supplied with above is No. 9é.

CLAY ASSAY CRUCIBLES.—These are perfectly smooth,

and of the correct porosity.

FOR GOLD. FOR IRON.
Diam. Height. Per doz. High. Wide. Per doz.
No. A,.... 14%in., 1% in., $1.80 | No. A,.... 33% in., 1% in., $0.50
eK RM ee ee Rte fe PG Rag Ie BOF Og
ae Ga ee Se Pig?" 4,80 A aes A eee oe EO
‘“& D 13% 6< 2 66 I 8o |

All styles and sizes of Crucibles furnished to order.

26 FLETCHER’S LABORATORY APPARATUS.

FLETFGHER'S

GAS COOKING AND HEATING APPARATUS

FOR DOMESTIC USE.
id

PATENTED AND MANUFACTURED BY

THOMAS FP LEYCHER Fs.

Museum Street, Warrington, England,
And by BUFFALO DENTAL MANUFACTURING CO., Buffalo, N. Y.

Mr. Fletcher says: I have been so constantly asked for cooking apparatus, and
repeatedly consulted with regard to apparatus in use, and the advisability of making altera-
tions, that I have decided to make cooking apparatus in addition to the special laboratory
arrangements now so well known.

We have used gas to the /o¢a/ exclusion of fires for cooking for the last 18 years.
During that period constant experiments have been made, with the object of getting
the most perfect results with the least trouble and expense, for our own convenience.

The burners and oven are patented in all details, and are the same precisely as we
have now in daily use. They are simple, cheap, and within the capacity of an ordinary
servant. The actual cost of gas cooking is less than half the cost of coals, and in
addition, the absence of gas for cooking in our own house would entail the employment
“of at least one extra servant, and greatly-increased wear and tear in cleaning. For
18 years our cooking has been done on a table under the kitchen window. The oven and
three boiling burners are all the apparatus necessary for any ordinary family. .

The oven is fully hot in less than one minute. To work the whole of the burners
and the largest oven at their fullest power all at once requires a 5g-inch gas supply pipe
and tap, which can in almost every case be fixed by a plumber for a few shillings. In
case of removal, the pipe can be taken and refixed in a new lrouse with little expense,
Our own fittings have traveled through four houses in eighteen years.

The oven is the most important point ; underneath the burner small joints of meat,
fish, potatoes, apples, &c., can be roasted perfectly, and toast quickly made. In the
lower oven, pastry can be baked quickly and perfectly, and meat can be roasted, not
baked as in an ordinary oven. In the upper oven, meat can be stewed, custards, rice
puddings, &c., made, and the hundred odd things done which are so constantly required.
This upper oven is not fitted to the small size apparatus, and is not necessary in the
ordinary cooking for small families. It utilizes the little waste heat only, and can never
be got hot. Puddings can be slowly cooked, but must be finished and browned in the
lower part.

With regard to the system by which the oven is heated, the burner is at the top of
the lowest part, where the gas is perfectly burnt, thereby heating the bottom of the lower
oven, which radiates heat downwards for grilling, toasting, &c. The burnt air is taken

FLETCHER’S LABORATORY APPARATUS. 27

in at the sides and carried up round the food as a hot jacket ; the same thing is done
again in the upper oven with the heat not already utilized.

By this system fish can be cooked underneath joints or fowls, and pastry, ad/ at once
with one burner, without the slightest alteration in the most delicate flavors. All are as
perfect as they can be, and by this system the consumption of gas is reduced to less than
one-half what is usually burnt, whilst any character of heat, dry or moist, quick or slow,
can be got instantly without trouble.

The whole of the products of combustion and the vapors and smells of cooking are
led up to one opening in the top, which, if desired, can be connected with a pipe to any
convenient -flue, although this will not be found necessary except in very confined
kitchens. :

In reply to several inquiries: I do not supply boiling burners fixed on the top of the
oven. To do good work in the oven it must be at a convenient height, so that the whole
of the contents can be seen instantly, and easily handled. It must therefore be too high
for burners on the top. Further than this, boiling burners never work well on the top
of an oven in use ; they are very liable to smell, and never .do the work they ought for
the gas consumed,

The new boiling table can be used if necessary on the top of the oven ; but I do not
recommend it to be so used, as one burner never works properly if placed over another.

The boiling burners are two sizes: the largest, whilst at its fullest power, will burn
25 cubic feet of gas per hour, is for large pans and quick heating. It will boil quickly
four or five gallons of water for children’s baths, and will, when required, keep a small
pan boiling steadily by simply turning the gas low. _ The small burners at their fullest
power burn 10 cubic feet of gas per hour, and are for general work. It is advisable to
use the large burner only, as far as possible, for very large or very small work, as it is
not so economical as the small burners for medium work, although the difference is not
great. As soon as boiling heat is reached, turn the burners low ; about 2 feet of gas per
hour will keep a pan boiling.

The statement as to the very unusual power of Fletcher’s patent burners has been
so repeatediy denied lsy those interested in the older forms, that the following tests made,
without my knowledge, by R. Briggs, Esq., C. E., and published in the ‘‘ Journal of the
Franklin Institute,” will set the matter finally at rest: ‘‘A cooking stove, fitted with
the Bunsen Burner, formed by a ring of 14-inch pipe, with jet holes 1 inch apart, gave
244 units of heat for each cubic foot of gas. Fletcher’s patent solid flame burner gave
450 units of heat for each cubic foot—nearly double the work for the same cost.”

No. 47... BPLETCHER'S SOLID FLAME .BOILING
BURN ERS — For large pans and quick heating. It will boil quickly
four or five gallons of water for
children’s baths, and will, when
required, keep a small pan boiling
steadily by simply turning the gas
low. The small burners at their
fullest power burn 10 cubic feet
of gas per hour, and are for
general work. As soon as boiling
heat is reached, turn the burners
low. About 2 feet of gas per hour
will keep a pan boiling.

HY
HE

No. 47. Large size for large
pans, &c. Price, $2.00.

COOKING BURNER

Engraving one-third full size.

28 FLETCHER’S LABORATORY APPARATUS.

BOILING BURNER. A small

size of No. 47, and of the same power as
No. 51. Made from improved patterns.

PRICE.
NGO IRS ee ete ae
No. 48. Small size. For general use.
PRICE.
fe ING: Moe oes nin et he te Re PO

No. 48a. New ornamental pattern for
the breakfast table, &c. Same power as
No. 48.

PRICE.
No. 48h ceic nek i ies O8.00-

No. 48. Engraved quarter stze.

3 No. 48a.
No. 51. New pattern, with tap and
extra tap to supply small oven or another
burner from one gas pipe.

PRICE
With 2 taps, as engraved,. . $3.75
Without tapsyi? si dcsinvewieacl’ B98

For table use, and also where the gas
supply is deficient, both these burners, Nos.
48a and 51, are better with the new SHORT
FLAME CAP. Price the same.

No.1 R. SOLID FLAME RADIAL BURNERS.— This

burner has no loose parts, and is practically
undamageable and indestructible with the
roughest use. It is entirely made of an-
nealed cast iron, and has no loose cap or
gauze.

The flame is practically solid when in
use, and is without any tendency to run to
a point in the centre. The carbonic oxide
flame is unusually short.

PRICE.
No. 1 R, Radial Burner, . $2.00

No. 1 R.
IN ORDERING, specify the goods wanted by the Number, in this

Price List, but if the exact apparatus required cannot be specified, the work to be done
should be precisely and minutely explained.

ALL INDIA-RUBBER TUBING used must be SMOOTH

INSIDE, made without wire, and of as large a bore as can conveniently be used.

FLETCHER’S LABORATORY APPARATUS. 29

Nos. 200 and 201. FLETCHER’S ARGAND BUNSEN. —

A cheap, simple and indestructible burner for general PYEAALY work. The flame of these
burners is shorter, more compact, and higher in tem-
perature than an ordinary Bunsen, and is also free
from smell. The air supply is self-adjusting. The
sizes given are the bore of the horizontal tube.

. 201.
PRICES, ee

Without Tripod. With Tripod.
¥%-in. size, gas consumption 2 ft. perhour,. . . No. 200, $0.75 No. 201, $1.00
b- in. 66 “cé 3% 6é sé p i : 6é 1.00 “6 E: 25
¥ -i 1n. 6é ee 6é 7 6é 6é - ‘ ¥ 1.25 6é I. 50

No. 93b. BOILING BURNERS, ON TRAYS.

Three Fletcher’s solid-flame hienere: on ileal stand, in tray, with taps to each,
and tap to supply oven at the side. PR/CE.—No. 934, complete, $

INSTANTANEOUS WATER INSTANTANEOUS WATER
H EATER — For LAvatTory AND HEATER For Lavarory. Price,
SCULLERY—Price, $10.00. ; complete, with Burner as engraved, $5.00.

‘nicety not obtained by a gas cock, and we find

30 FLETCHER’S LABORATORY APPARATUS.

SMOOTHING IRON HEATERS.

This heater is constructed on the same base as the soldering iron heater, and is an ex-
ceedingly economical burner. It does not smoke
the smoothing iron. A milled nut on the gas jet
enables the operator to regulate the gas with a

that better results are obtained by regulating at
the gas jet, than further away from it.

This heater will heat an eight-pound smoothing
iron in six minutes— expense for gas when in use,
about one cent an hour, with gas at $2.00 per M. *

OR PGE:
Smoothing Iron Heater, . . $2.00

BOOK Pontes a STOVE.

This gas stove is made expressly for Book Binders’ use, and after two years’ trial is
believed to meet their requirements fully. It produces a more even heat without
smoking the tools than any othér stove now in use for this purpose.

The Burning Roll Flame is obtained from a Fletcher’s Solid Flame Burner, which
heats the roll very rapidly. The heat for the Pallet or Gold Roll is obtained from a
Fletcher’s Evaporating Burner, which distributes a small quantity of flame over a large
surface, and is a remarkably economical burner.

The whole apparatus is of cast iron, nicely and strongly made. The top can be used
for keeping tools warm. -

PRICE,—Book Finisher’s Gas Stove, é ; ‘ , ; $12.00 :

THE SNOW oe BLOWePIPE.

The connection for both gas and air
are made with rubber tubing, giving
great facility in directing the flame.
The gas mixes with air in its passage
through the blow-pipe and burns with-
out smoke. Motion can be given to
<the air pipe by means of the trigger
~ wi shown in the cut, and a pointed or
“brush” flame obtained at will. There
is a valve in the gas pipe, opening
and closing automatically, which, when
the blow-pipe is hung up by its ring,
will partially shut off the gas, allowing
only sufficient to pass to keep alight.
When the instrument is held in the pro-
per position for use the passage of the
gas is unobstructed.

PRICE,—Snow Gas Blow-pipe, nickel plated, . ‘ . ; $4.00

FLETCHER’S LABORATORY APPARATUS. 31

LABORATORY GAS BURNER.
FOR DENTISTS, DRUGGISTS AND JEWELERS.

This lamp is so constructed that it burns gas with a blue flame without smoke, and
gives an intense heat. It is an admirable substitute for the alcohol
lamp. It will be found a very conveni-
ent burner for Dental Laboratory use in
_ heating water, ‘‘waxing up” a base
plate, vulcanizing, and in fact for gene-
rene - ral heating purposes.

It is ‘eae ge extensively by druggists for evaporating, heat- eg
ing, etc., and will be found equally good for family use in the g
nursery or sick room, where a small amount of heat is required. The wines can be
removed, as shown in the cut.

Pkt CH S.

Gas Laboratory Lamp, . ‘ ‘ é ; ; ‘ $0.75
Gas Laboratory Lamp, with Spider, 4 ; : ; : ‘ 1.00

BUNSEN BURNER.—This burner is constructed
wholly of brass, nicely adjusted and polished. The flame is as near
perfect as can be, and for chemical laboratory use is preferred to any of
the cheap Bunsens.

PRICE, Reg ee i je aR eS Sy ee

PRICES FOR ORDINARY MOUTH BL OW-PIPES (Brass).

g-inch, plain, each, ‘ ; , . ; + xs
10." 2 : : ; j ‘ ; ; :

ri * s 2 ‘ ‘ : ‘ : 5 ; z ns
fe et - ; ; ‘ ‘ ‘ ’ ; ; q .e3
143.9 f SS 7 ‘ ; : ; 5 ‘ , : .28

PRICES FOR INDIA RUBBER TUBING.

Int. Diam. ys inch, ; : ‘ ; . $0.10 per foot.

v6 ‘ : : ; ‘ ; : : 14

o BE eo, : ; ; : : ; ‘ SEB? in &

ui Ye : ; ‘ ‘ : ‘ ; _ eee

: 3 ‘ shyt : ; : ; : 62

é % ce : ee
4% : : : : ; q ‘ ; 2

ed es Ss PB gee ; ; ‘ ‘ i ato

ce sé

: 34 nt ; " ‘ : ; : ; es

I ; . . , ; : ; : ‘ Ree can

MEDALS, &c., AWARDED TO THOMAS FLETCHER.

1871.—FIRST CLASS BRONZE MEDAL—Royal Cornwall Polytechnic Society.
1872,—_SILVER MEDAL—Royal Cornwall Polytechnic Society.
1873.—_INTERNATIONAL EXHIBITION PRIZE MEDAL.
1876.—EXHIBITION SCIENTIFIC APPARATUS—South Kensington.
1877.—CERTIFICATE OF MERIT—Mining Institute of Cornwall.
_ 1880.—SILVER MEDAL—Society of Arts, London,

LN DE.

A.
Argand Bunsen, Nos. 200 and 201, 6, 29
Automaton Blowpipes, ASB SC. II
Alcohol Blowpipe Lamps, 15
Assay Crucibles, clay, 26
B.
Bath Heater, 8
Blowpipe, Snow’s, 30
Blowpipe Jet Tips, 13
3lowpipe Lamps, alcohol, 15
Blowpipe Lamps, tallow, ; 15
Fletcher- Plattner, 16
Blowpipes, Mouth 10-12
Blowpipes, Chemical, 10
Blowpipes, Hot Blast, 12
Blowpipes, Hot Blast, for r Mouth, 10
Blowpipes, Hand, . soit 12
Blowpipes, Automaton, 11
Blowpipes, Herapath, . 13
Blowpipes, No. 8a, for melting arrangement, 13
Blowpipes, Brazing, No. 8c, : : for
Rlowpipes, Special Chemical, 15
Blowers, Hand, . r5
Blowers, Foot, . . 7
Blowers, Suspended, 9
Brazing Blowpipes, 13
Boiling Burners, No. 47, 27
oiling. Burners, Nos. 474, 48, 48a, st 28
3oiling Burners on Trays, ; 29
300k Finishers’ Gas — A ericatoe 30
Bunsen Burners, Het 31
Bunsen Burners, Argand, 6
3unsen Burner, Bist, No. Sens 15
Blast Bunsen, No. 15
Blast Gas Furnace, "Lajeetae No. 41, 20
SS
Carbon Blocks, molded, : 9
Carbon Crucibles, for melting arrangement, 13
Chemical Blowpipes, hot blast, Nos. 31, 314, 10
Chemical Blowpipes—Special, | No. 32, 15
Capsules, Clay, . 16
Crucible Furnace, No. 15, 17
Crucible Furnace, No. 16, 18
Crucible Tongs, . 18
Crucible Furnace, No. 40, : 23
Crucible Furnace, No. 40a, improved burner, 23
Crucible Furnace, No. 404, for refined petro-
leum, . . : Sia eee fag hy 24
Crucibles, Clay, assay, 25
Crucibles, Clay, 16
Combined Crucible ‘and Mufile Furnace, gas, 21
Ser Crucible and Muffle Furnace, pein:
leu ; naa . ‘ 22
Cylinders, Plumbago, 17- 18
D.

Domes, Plumbago, 18, 19
Draft Furnaces, 17
E.

Evaporating Burners, 4

s F.
Foot Blowers, Nos. g and ga, 9
Foot Blowers, Suspended, i 9
Fletcher Blowpipe Mouth-piece, . 12
Fletcher-Plattner Blowpipe Furnace, 16
Fletcher’s Universal Furnace, ; 16
Forge, gas or petroleum, 14
Furnace, Crucible, No. 15, . 17
Furnace, Crucible, small, No. 16, 18
Furnace Ladle, No. 14, 18
Furnace, Muffle . . 19
Furnace, Draft . . . 20%
Furnace, Blast 21
22

Furmgee, Combined Crucible and Mufite, gas,

F,

Furnace, Crucible, No. 40a, improved burner, 24
Furnace, Crucible, No. te for refined eee
leum, . oak 25
Furnace, Tube, 6
G.
Gas Supply Taps, Nos. 111 and: ah 6
Gas or Petroleum Forge, : 14
Gas Furnace, without blast, 16
Gas Cooking and Heating Apparatus, : 27
Gas Furnaces, with blast, ; 2
Gasoline Generator and Furnace, ‘No. 400, 22
Gasoline Generator and Furnace, No. 44, - 25
H.
Hot Atr Bath, . . afyo Pentia4
Hot Blast Blowpipes, Nos. 1a, “2a, 3a, . 12
Hot Blast Mouth Blowpipes, Nos. 30, 30d, 3 10
Hot Blast Chemical Blowpipes, No. 31, — . 10
Hard Rubber Mouth-piece for Ryton 2 10
Hand Blowpipes, Automaton, . ; ir
Hand Blowpipes, serine, 13
Hand Blower, ; 15
Herapath Blowpipe, No. 13
Horizontal Solid Flame Becnay No. 48, 5
I.
Instantaneous Water Heaters, Nos. 147, 247, 7
India Rubber Tubing, pepe tee wer GS
Ingot Moulds, 13
Injector Gas Furnace, 7 20
Injector Petroleum Furnace, 21
Jet Tips, for blowpipes, 13
L.
Low Temperature Burner, No. 7, 4
Laboratory Furnace, No. 11, .« ; 18
Laboratory Gas Burner, small Bunsen, ? 31
Ladle Furnace, No. 14, : 18
M.
Molded Carbon Blocks, 9
Mouth Blowpipes, plain, 31
Mouth Blowpipes, hot blast, 10
Major Ross Blowpipe Mouth- Piece, 10
Melting Arrangement, No. 8, . Piya
Melting Arrangement, No, 8d, 14
Muffle Furnaces, — .- bsp
Muffle and Crucible KF Greates, combined, 21, 22
Muffles, Plumbago, srk ‘ 19
¥.
Plate Moulds, : 13
Petroleum or Gas Forges, 14
Plumbago Cylinders, 7 18
Plumbago Domes, . 18
Plumbago Muffles, . 19.
Plumbago Crucibles, ‘ 24
Perfected Injector Gas Furnace, : 20
Perfected Injector, Petroleum, 2r
R,
Radial Burners, 3 (sso. Se ws BO
Ss.
Solid Flame Burners, Nos. Me — dad 47 5, 27
Soldering Iron Heater, No. 18, . ES
Suspended Foot Blowers, 9
Special Chemical Blowpipes, No: 3% 15
Smoothing Iron Heaters, . 30
Snow Gas Blowpipe, 30
ond
‘Tube Furnace, : 6
Tallow Blowpipe Lamps, 1 5
pian Oe

‘Taps for Gas supply, . + + |

Pha! ‘ al ‘

Seer a ye ea apne ty he Se

eS
mie Re

ee ea
Png oe

|
VORA Ping Re EEO

Bes Ltn, gh ahi arcale
“ Bah Sey ”
* i. Ae es e e

ee ' ~ OF CHEMICAL AND PHYSICAL APPARATUS. 193 -
Fire Clay, Fine....... ae BU ee, Ge ka Per lb., $ .16 | —
Fluor Spar, Cryst....... te Sry Bee ey he ee AA ES
#f POW eked Ao cls Be es ne eal ai aisles as AD} Ee ae
BPMN IO, MONE oid y 86.6 0A a ee ES wee Per oz., .20 ms
¥ VONEe S68 Sees hace: Skee pion ieee Lae on Te 2.90
eee Pemba ee Se igs intdee S Per dr., .50
Puen. Motal «:....35.5 6... Sora Mey Santis vee . Per 0z., .40
Wasel OU; Pure.) 3.00.50). Wee ace ree Per lb., 1.00
Fruit Essences, Artificial; all varieties kept. :
G. \
Galena, Fine, for Blow-pipe work......... Pree Can ae 30 ‘
Bee GO TONG yh wen ib enw eb evar el erence 3 WOR ORs 05
es OEUTO: OF separ ie vv eee ee Pees. % 15:
Seen OL MOTAR > oc, iy ka ha ne tS sng ff 25
Glucina, Carbonate.......... PPeL ey Soha eee Oi Per-dr:; 1, 50° ;
“ Hydrate ..... Bae eR eae « 1,50 a
errs oa NR he ae a aes eee eee Per thi, <1E :
Glycerine, Puriss.; water free, T................1. 7 s
if Best American; very fine; free from lead
and all earthy matters............... s OO z
MMA ATAVIC DIOKS 62 Osh ec e ce ce eae ee Lv ¢ U5 ee 7
e PEs A WOEGR: Fibs Oh wna ees 20k eee: bat aes 00 :
Peet IM GON nai aie Goa ee ot oe ses Seaaew a Per oz, -10
Dreentant © 5 oe es ee ei 10. as
Gums, of all kinds, at lowest market rates. a
Reade Cuore, BOE Cy Se ee aoa « 2.00 %
“ Ditto, Dry, Pure, 15 gr. bottles............... « 25.00 3
MRM eo rn ay ne c¢ = 35.00 “
*< Metallic: Leaf, xx Deep, Per book,........;... U5 -
Graphite, Pow’d.Pure T............... er ace 8s Per lb., 1.00 ce.
¥ POP ee ea as et Ge Pets cite Ss FS 25 th.
Gutta Percha. Pure. In Sticks..... EO ee . Per oz., 1.00
Gypsum, Puly.................. SiGe A ore wae ah Per lb. .10
Gelatine, Pure....... Pees Wik ua cea cs Beet Per 0z., «15
H.
Hematoxyline................. awe Conese beaver: Per. gr., .08
; 9

Indigo, Pure, Best Renee te }
a6 SOR ATS BO Nee ee, see g Gil ee Pea
Todine, Pure, Resublimed, Tee eS
ts Ornde.’s 5 7 a ee :
avidinin; Metts) ys es ee
Bl 3) ITSO i acy aero ee ee
aPiosmibam 30606 ROR ea a
Amaia (Mette. eo ee
aron, by Hydrozen, Pare: 35 a os ee
Pay SOs Pare. os ca eek co
WA, PURESS a eee gt
. Roctita occ nn eo
Ammobniathas 357 cs Coen ee ois
Limatura, Alcoholized............
AYOORIARC fo aie ree
Browder york ne eae Wa kd ee ae
Carbonate, Precc.T..............Per lb, .60,
oe Proto, Prece.... :
Chloride, Sesqui, Sol... 2.00.2... Perdb.. RO, ce
Beg “« Fine Cryst., C. BL OQ, 2
- Proto. 3.432 ee ay C8
tivcieaie: Native..ccc3 2 Sage Geis 4 OL ees
Citrate, U0. Sik vines 4c ser Was
« and Ammonia.... ° $
“« . and Manganese.........'.. a3
« and Magnesia....... | ae
Ferrocyanide, Pure... Be ns
Com... SETA Seen ee
Pin ges ores. eran ei peer eas
lotides fo Pk Or Ce ea . Per 02.,
SoM fp bees eam
Lactate, Pure. sa tales ach ae
Oxide, Hydrated Peroxide... y.c2. 5 ase e es: Bes Ib.,. 1. 50

POWs oe cs a vis oe w kat OL OME 10 —

« Red Oxide, Pinner: COS ATM Die Peak ele Aes 1.20 —
« Black Oxide, C. Pill in ee weey in tye ee oz, -1a
“ ‘ Com'l.. Yidiepmegia: Pea Ae les 1052 De y ve ‘ ee

Pet Ib, $ 50, Per oe 10

"Phosphate, Piste. Cie ee
« ee
_ Pyrophosphate, i in Plates,
_ Sulphate, C. P., Oryst, 04
. Serene tae
and Ammonia, C. La
6 and Potassa....
Sub., Pure. .
Haulnhide: Fused, Opt.
carey gs
Tannate, Pure.......
Brat oo. eo. aay Lo
« and Ammonia...
" Tersulphate, Sol, Opt... oa
és and Potassa.

‘6

it7

oe

Tungstate.. .
-Valerianate. .

; S ‘Kermes, Mineral... .
ae ‘Kaolin, Pure, White..
ene. Ruse ue ok:
L.

eer ee etee

oe Lead, Acetate, ©. Pore:

ie Com’l, ...
Tribasic...
Sub., Sol.

- Bichromate, Pure.

Carb. Neutral...<.

oer eee eee

cc

«Native. See Minerals. |
~ Chloride, C. BEI GES ES ae CREE DG st tg
~ Chromate, for Organic Analysis. .
eth. cia

‘ . , 2
CN Seige Cte Tas

6<e

.60,

S06 5%

“ee

Per lb.,
ce

s

“cc

Pa lb., 80, Per oz,

6

Per ths

. 6

. Per 0z.,
ce

ee Ole 079-0) 6.0.6

oe er ee eee

© @ © © ee © ©

eee eee we &

O58 26 8 EO

‘é

Per Lh.
..Per 0%,
ie Or lies
Per OF

Per 02.,

.. Per lb.,

“

4: Cm Pp ...Per gram.

eo €'e ©.6,;0, 8 @
oe ef ee @ © © @
SOs BSS at GQ @
oe 2 . ‘e eee
oee eee ee

eee er ee ee
ee Oy Oc Oe eS
t

C616. 56.6) Cfo o

Ce. OP eS eS

. Per |b.,

ce

. Per 02.,
. Per Ib.,
. Per 02.,
; ober 1D.

. Per 02.,
ce

: “
a), oe

10
1d
15

18

oo

196 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE
Lead, Mett, C. P., in drops, for Assay purposes....... Per lb., $-.75
SE INES, Pare: fo os coe ee ci ee a ee # ~%0
i. Oxide; Redict 2 gc33 ooeck eee eee ee a2 1.00
. © 5 Prote, Pura so oa eee . 20
3 eee COREG Sara prt Oke ne Bong cite eaae tt <, POY’ OSa:! et
ct: Sepa Re! PUTO <3 vais kings ye ene eee $ .30
%: Babpnate, Gu Pts cal ee oe alg ca eee ee eee Per lb. —.50
Te SE REEPOUG RNG oe tee ee ein | eee any Per oz., — .20
Re AIS ERNE 83 De ig ig Oe Sate ore cpl ceria one gta we ee eae ce 20
hithia, Carbonate, Oo Ps oo. oe oe i 1.50
«ce CIEE sic Sc spe CELOR Re ee << 1.25
ef maul phates: ss 73) ss eee apr es bee rae ee 1.50
Dini, Chloride; Conv dhs =.) ecg Sees eek ee Per Ib,,::°*.20
Lithium, “ Ooo fy doer e ac che EW ae eee Per oz, 1.50
5 DTOMIGC 2055 ey ay yee op Pe eee Per oz., 1.20
66 TOA soe ee es PIR as Recep aoe: uae 1.25
tits, In Cubes, Pauteis ee ee af 10
of Paper, Blue ahd: Reds vee ees Goa ok Per sheet .05
Tie wood.: ‘In-Chips: 3. 50. Sa hee ae Per Ib. 110
6 PUK Eb ee ee I ee Cae Per oz.,° .10
a in: Bitlote: cid ee ea eae en Os Per billet, ,50
PU OUING 26 Pee es a Per.03.5. "510
PS COPRUIOM poe ee a Pepe ae ten URN ‘ 10
M. : ,
Maenesia, Caustic: 6. PTs eo A ee Per lb., %.00
ef Carbonate; Precl. eee er ee Per oz, *°.15
= Native. See Minerals. 7
és Citrate; Pare oo a eee Per 1b. 20
«6 Nitrate. Pcs Pls as ee Per 0z., .20
& diypophosphite.s ic.) en eae eee ee eae
‘ PROSPNAR A os ene cee ae nS es RS 40
es Rulpiete; Ue Ps. erik Ne ee Per 1b, 360
s Valerianate <i oi COA ee er Per dy...) 80
te Sulnhate, Com boot eis cous ace us Per: this 2210
. Sulphite 3%. 510557 ee oe Sire yey eae Per.oz., .10
“ Magnesium, Ribbon................... Per foot, .05, “ 3.95
4 WAG CoS ie aes ae at 05, 548
a Bromide. sk 6s thee 241 ee es 1.00

UF CHEMICAL AND PHYSICAL APPARATUS. 197
MEUMMORAUIN 1001.8 eG ae eek oa Per 0z.,$ 1.00
; . TOES Cs ko vance n'y Prem cae oaks Per, tb. * 30
Meenrunese, Math og is a ee Per gram. 1.00

nee AGA UB i a ic amine poe dite pavela sane awh Per 0z., «30

ey EPPO. ey wie cd UR oe RN ee “s 1.25

ed CTO oo ie VG ia he oh eed ¢ 3d

€ RUD tee ices GS et ee eee aoe 4 o's as 22d

£6 Per-Oxide; high test;*Pulv.... 2%... Per ta Ww

«e Ceri F UPO ke ee A eee Per oz. =. 20

. TEV HOMROSPHIe 5.55 by hires bee emi ce Per 0z., .60

fs OUTRO Oe Oe ee ce ess ‘ 1.10

s PURO DG aor eos, has SRS cee Ne nSys'o 8 ef 50

f DSO eh oe Ptah tele ak Ose Hee cg 30

Sulphate, C.P., Cryst...... Per lb., $2.00 “ 20

RIN a. een a ee a a Per dr. .30

UNRNER lee os os PU ay Pe vn boo stom Meee Rite ties ahs Per dr., 2.40

Morphia, Pure Alkaloid, .........0.....6: Price, per oz., 9.00

§ PPIMCCONBLE 66 5. so OR ee as fs oo ED

. ROTTS se ey oho ine oe $f es: TORS

ie PIREURE og oily ced vie Ae Bey Lees 4 12,00

fs RIUBEIOS i, ohn een te a xt of 7.00

2 PPOMBTINNIGIO ee lees es os ea ks Ks is 8.50

I Ge eo ee a Cae Per oz, .35

meroures. weciniiiod, Dest... ok eee. eae Per lb., 1.25
- s in quantities, special price.

- PAPERS 5 a ae ee ps Ce ee es Per oz., .50

He TRUONG 5 oan ie nied Ge SO ae es ¢ .50

isd RTIOTIOLG, PPODO Naik cele PE eek ack Op awk _ .30

fg 6 PO PN een ae Vi ae GA cw sf 15

. AGIOD hac ey eee yes i ae se ow eis fe 00

6 iene, Oo F742 ORs ee hes os merce 30

5 ROMIEO SE SOU Whe eek lk Cee ek oe ke Flees 55

£§ $6 wy fy SE Ra HN 28 2 ANAT a eo . .50

be RERIGM, Oe Ss aye Rey he oa sia ieaneer: fo

ae FOS ARIE go's Waa baie 1h 6 GaN s wiers 0c 6 225

4 MSR FF) OS Se SER Boe See re “ Bd

Mie Mande: Bio fe es « 20

a 3 1 ENG ee Be Cte A ar ra % 25

_ PRPC VAIO ys Sige a hc o's Vie 5 vce ole ae 35

198 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE
Mercury, Sulphate, Basic.......... Aa Per 0z., $ .20
sd £¢ Nentralic oc. ct eee ee es Bd
& Nitrate; Proto... oo bees eel ee ee < .30
ef sf POR es Oe oe eee ee ome oe 45
POU VIING 5) in oie ce Oe ey won wok ated ees Per lb, 1.00
me ONG es ee ee ce ee es “ 15
Microcosmice Salt, Pure............. Per lb., $1.50, Per oz., .15
Molybdenum, Metts ooo. oo ees Per gram. .50
¥ OXIA. ice i ae Sorgen dh Per 0z., .5d
Milphidec oS ccs aek ew oer e . 60
mMonisnerin, Pures. 7 os so a ee 2.00

x.

MADUtHO. Renate. 8 OC Sos ie tee Per 1bj° =55
" WOGG re. Or Sek ie ae eee ee “e vd
Napualine, Pure’ Toce. ote Per lb., $1.50, Per oz., .20
NOTEOMD | Reso BNO Cee eo a ae ae Per dr. 7.50
MOrCOtNe Oi Po. occ n is sor meee Per oz, 2.50

Nessler’s Solution, for delicate Ammonia reactions,
Per fluid oz, .25

NICKOly Metts Onbese aie oil boa ess Ses Per oz, .40
- Cardy Pures. ose UR aa eee " ~t5
«“s Chiorids, (foe oe ue a eee oe 75
- IN EYALO 0, Pe Dats ie utun a ho he ees ¥ .80
is Ox BIBbe Se ee a a sf 1.00
- Oxides Oar ke ete eed é 1.00
a Sulphate, OoP cc ee ese eae ores One es ie? ae
$6 eS OG AMORA ck Co ee aed As 05
NiCgtine. CE ek eo eee ee « 16,00
Nitro;;Ongol 0 ee a a ea Per 02.) 20
0.
Ores and Minerals. See Minerals and Fossils.
Osmium, Mett........... .... UES ee Buty gee teed s Per gram. 3.50
Olive Oil, Prusc iee i pe a e Perpt. .60
Oils, Essential; all varieties kept; True........... :
f: - RADOSOR fo 6 tie ae Ch oe aa eed sbsieetabese OF DG, OO

OF CHEMICAL AND PHYSICAL APPARATUS. 199

i. earaiin. Meth ee ee eee. es -...-Per gram. 3.00
| ee Chloride, 1 dr. bottles...... ei eco ras dr., 7.00
Parafine, Opt., Pearl........... RP a eee ty cet 3 Per lb., .40°
Phosphorus. In Sticks............. Per lb., $1.50. Per oz. .15
ms POT EIGS, ce ek iy es “ 30
e Sire iad feb or eee Oe, Per dre? 35
MGTIO ee ies 2G oh OS 6S oes eee eiy so Per oz. ~ .%5
PIC POLORINGs LUC ri yee ee alee teins Per 02.,12.00.
MOOS IHG SPI, FUG. ccc ee eee ue er ee he OS Per qt. .50:
Ee ss keV oo FE Sol ae bck ote ts Per 0z., 1.30:
POMsING, Hest, RENHEN s..00.) 6 ein Geet ote ate Per 0z., 1.25
TURN a een clot « 3.50 |
Platinum, Chloride, Sol..............., Be oe ie. Por 028. 20) oR
e & PI es es eae EN een d « e 7.50
. - BNA BEGIN ore eo fs «s 7.00:
& PRONG GS re oor ei eed Coe es gene Per gr, .03 ——
2" “for Hydroplatinic Lamp.......... Each, 25
ee WIG ia oir aks ails kee a gl Te fC hisia’ Per gr., 24
¢ OE he oe he awe BO ewe tee Ss " 23
f PR ee ee ee ha! Sen SE Bs Aa |

a te IAAL

ee le gee Ge

Potassa, Acetate, Pure............. Bore creda aoe 64 Per oz.,- .10
e PATIO NIBLG 22 ct hae oh 4 Bin Oe ne icc .30
4 PTRODINC Go Ud acts Pale cas EA aM Gogh fs .10
ee PRIMER ey eS ie nein URE fone kode : .10
6 PACETOOR ALC, Oy ek, 62 rs Giraleh wala ke cies Per lb., .50
« c Cpa eS 0 i
af MSIG APOE oe ee PRR Oe as. Ee ES
ie e Puriage Ge Per lb. $1.00, Per oz, | .10
6 POLO MARE ee Ca a ak Ne 20 4
6 PPOs + ORURRGy Aorares koi wo kc eave a es © és 15 |
Or Paupnate, C.-T. oe vce sno os Per lb, — .60 a
Bye ewan Ae, OPVBG 6. fee Ales ope es See as i 50 oa
«“ 6 PN Ee ee “ 1.00
a cé Powis d5.6 ss eT ae Nees wee eis * 40
- ME a ee ee en oe sae ak a Os «6 ds Per. 62... «18
re ereenare, Uy ba mies. 6 cose an Per lb., 2.00
“ RIOR ip en Pec ewe ne Per 1b., .20

200

_ Potassa, Carbonate and Carb. Soda, C. P.......

“e

“ec

“6

“e

“ae

oe

-¢
=.

“se

“é

“6

ae

re
7.

“

“

“

“e

“

“cc

“

“cc

“é

E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

Caustic; Fused; ‘White, “CG. P. Tota Ses «

_ BOW Oa oe sa es we a

i 6 OCP AI Sor tae eee ee *

“ «> Dep. Aleohol, Purigs. 26°. ;
Chlorate, Oryst, ‘Best. oo. io. aes Boe *

- POR eae oe peek ss F
Chromaté; Paris&. 6 ors. Per 1b., $1.50. Per oz.,

Re Comite ea ae oe ee
CHEPARE Soe ce ee ee i whan aha Monee he Per 0z.,
Cyanide, Fused, Alb., Opter.- 3. dee ieee i

ie Bes 65: In 10 1h: Cans Per Ib.,

e ‘3 i Oe ag Ol Re Per 0z.,
Chicride CPi it ae See =
Perrocyanide, Pare 0 ss ks kar
Verridcyanide oe, a alae . ‘
Whroridey CaP nas Vek iain ane oA we ale as
Hypoehlorate 3 sigs eee Gece veces ee fs
H ypophosphites 255. psrdtecesa swe tino wale Bae “6
Iodide, Pure Cryst(variable price)

es nen Pura TS ya oeaees Cylon sf
Todate....... ie SE ta Aue du al ena LD %
Hypermanganate. 2)... 0 os sees s ; me
Manganate.-......... Seay ee “ .
AiRCLALS SN oc'g Sale kos Wangs vies Fe ws one LR ORIN _
EBT [V6 Seeaenerpype pre nem women te en Per. 1b. .40. 235
Nitrate, Orvat 505 va waoxten 9 ci riots minions Per \b.,

66) MPS Ean it MSE een a sak &
Phosphate, Pure: 0. sis s5 ows eae roe *
Nitrite; Pare, P.. in: etleks . AN Gas Per 0z.,
OF CUE Papeanetbn eniintr Doe rarinut: Sram aa eh ni is

6 BU. nk cw dudes See Rae hee ne ee
Pictrate, Very. SCaroe oi)... St ui ie whe oe ¥ 2
Sili¢ate, Sob, CrP Lessee ies Fe a ees ug

BD EE ad ah ua GR eet Per. lb.
Sulphate, Cryst; Pures csi 5% vexee eas Per Ib.,

: POW ce ihe regs pees i
Salphite, Cryst: 5 iss Pie Oe okies wee Per 02., .

Sulphide, Fused U.P. 3 see be tee i

2.00

.....Perlb., $ 2,00

.60
.50
TOI

40
1.00
1d
60
15
15
.80
re)
.10

20

18

10
20
50

30
20
.10

2.50
05
-60
50
16
45
£20

vu? CHEMICAL AND PHYSICAL APPARATUS. 201

Potassa, Lartrate, Cryst. QO. Po TT... ee ee. Per 0z.,$ .15
Potassium. In 4oz. vials........... Per oz., $3.50, Per 40z., 1.00
e EHV REGR Peck eo. Mie Aiea he Per 0z., .40
MGUY TAS FN <5 Fis ect 8 es Per oz., 1.50
« Gene isi ee is Per $ 02., 6.25
DERN ae Oy ei ab eee ee Coe es Per 0z.,
RANA TRO in ee oy Sone we. he ‘ 10
2 Q.
Quinia, Pure..... PR ey a Adie sie kN ws Ne Per 02..4.25
i PEAR SEN Oe in 4 es Seale Od ae wie he Per 02, 4.25
s PEPMORIB ih ores co ee ee eee es 6.00
e CTHG Gor ee a hee EL ie ie Per oz., 3.50
s SUNMIOTE Nak Cy wks Onion tyes Per oz., $ 2.39
R.

Rare Resinoids—Podophyllin, Leptandrin, Cimicifu-
gin, Macrotin, Alnuine, Ampelopsine, Apocynin,
Asclepidin, Baptisin, Barosmin, Caulophyll, Ce-

_ rasine, Chelonine, Colocynthine, Cornine, Coryda-
lia, Cypripedine, Digitalin, Dioscorein, Eryngine,
Euonymine, Kupatoidin, Kupatorine, Eupurpurin,
Fragerin, Gelseminine, Geranine, Hamamelin, He-
lonin, Humulin, Hydrastine, Hydrastin, Hydrastia
Mur., Hydrastia Sulp., Hyoscyamine, Irisin, Ja-
lapin, Juglandin, Lobelin, Menispermin, Myricin,
Panduratin, Phytolacin, Populin; Prunine, Rhusin,
Rumicin, Sanguinarina, Sanguinarina Sulph., Scu-
telarine, Senecionine, Stillingine, Trillin, Veratrin,
Verbenine, Viburnin,-Xanthoxylin.

SEER CA ON Be hee ee esa ety 3 oy 3 Per 02z., 4.25

MMI, PERCU eet ees aya nees Per gram. 5.00

Pema UNTO ss och s oe eA SS i 50

Rhigoline, Inoderous; Sp. Grav. 620.............. Per botl., -78

Ruthenium, Mett.....00.0.0... 06... .o....Per gram. 6.50
S.

MR ee ee seek ihe ice wn a6 ts PeT-O2.,., 40M

MING, DOMME. io ok os ele use as 8 re paar et tbs LRG

202 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE.
PORONIBIA 8S Se oe ee ee ee ee Per dr, $ .%5
Silicium......... Pag dig ren oer cel ane aan Per gram. 4.00
Santonin, Pure, Alkaloid: 3... is, Bea Per 02., - .¥5
Silica; Fine pround se eae See Pet Thy tts
Siver, Mett Fotlyc 5 co Ce a ee a Per 0z., 1.95
‘ ROPOT ES eT eo oe ices aed 8 aa Pa Ca e 2.50
* PiPAh eRe COR aa ey ee ee Per book, .25
S ACOTATO, PRPS (hs l ie See PE ee Per 0z., 3.50
s BIOMIGE. oo ie ek i ee ee s 2.50
66 Chloride 36 aie eo iofoto al eters ates “ 1.60
i Cyanide: Bol. oie 8 Si ea ee Goce ea oe eee
¥s Carbonate: be Go oSas OAS a ae os Oe a
. LOGINS, PULC soi 5s So SE eee a Per 02., 2.50
Nitrate, C2 Pc Oryety oi vows oe agen ata Oe
if RIGGS ies inde Ge fae asin Gere aN a eee
f Bulphate, Pure seks Oe ee aes coe
meta. Acetate oo ee ee eee a Per lb., 1.00
< ATHORINGG Boor eae Sei oak ee a OF Ota Cae
sc A TMOR IO Bion oy Cr ager es cine elie ee #5 10
(5) Biearbonate, Mag. Besth, oe eee Sees Per lb. -07
x e OSE VE ews heehee Rees ae eee .60
5 SARPOMIGE 5 as otis Gua uly RO oe a ct ee Per oz., 1d
7S ppemiiie: OP iii: 5p seesaw eben: atten Per lb., 1.50
Ss) ERE OOT MERGE PISS ouch ok aie Pe ee eas ee aes <2 le
fr MUL OLE, “PUG 8 Sees oS ER ces “e 60
ey Biantphite, Orbs ale oiaees conics sok a eee « 1.20
«+< OCarponate, Orysts On8. Pica ss aa tore ‘ 40
* ef Dripd: Prvias Ts oss Bee eas a§ 90
s . Oryst.; Com. 3. cabs Pin aie ae ¢ 05
“<: ~ ‘Caustic, White, by: Lime, Fused... aye cess rf 90
«“ é Moohols Dep, 0, Pa hs ater ee « 2.00
ie si) py OUSIE yisGe SA ae om Soe vers tines Per 0z., 1.20
«. Chiotate, Cryst. 2... 5: Liv whs bid ese whee nF 2
é. Ohiondé, Sol, U.S Pigs einen teal Per bottle -#0
es «“ Dried) C2 POR Sane epee Per lb. -38
6 Crtabe) Pure OI Ps one oa a ee
AS I OPIAG oe ac ec Vise tate gegen mang Per oz, 2
a: Sodtde, Pore, Orvat,. 205 iaisgi ge eda sea won aa i vee .60
oe ueby posalpiite,. 0. PE iy sca k cower erate bee Per lb. 70
BE ae Gran Oe Pe Oe a eee a oe 1.00
- 04 Powe © RF nig aed 8 ae “ 3.25

OF CHEMICAL AND PHYSICAL APPARATUS. 203
Soda, Hyposulphite, Am., Opt...............22 2000. Per lb., $ .09
i PeVPerManGanale, Cn bts ec a ele Seas hades es Per oz, .10
ix SRE VUTORMIIDYR. PURE OL. acc ces eek ats tweet ss Perth, 05
iets aaa TORRE UE oclug siege 7 es takings eee ee Per oz, .75
MeO oer oe ety eran Sor Geter Wines. sea Ee ele ts ne 2.00
Oe oT Rae COLO MOL OIG. . SES sedis bass oo a oe 60
PG PONE CP VBlis CU, Fes ieye eo aire slele pelea’ af Per lb. .65
FE PR TIG ORONO cy ck R nei es Coe SPOR Kye eee 4 1.30
ee eibrate, Cryst, OP... 6 os Mey ey is oe en e 35
4; Bie ONUOE oo tee oS eek occas ¢ ef 20
Fes Pe RO MOMOISAUE © 5,5 5 000 + capie’ ote oc cin gargs hie «bs a0 Per oz., .10
Re ORS OTNE oc nips Se eR doa pee yea Pleo ies Per lb. .75
Bertie PUANMEOUGAG oe Cs a ge ct Oey ne bg et ves Per oz., 1.50
Fa SAAT OCR POM Seeks ee eats anid eeiate ok divine s ‘é 30
See PE LICM EE: ae PE OOULIOR Ts bic sees wis one ve ee Each, 90 -
hPL MMO ROME Rs ak koe Se a esiee Per lb., 04
« ef Pt ne ere y Af 30
Bee ee OUMig c's ak See sig wlta ae Say eee DOE OZ,
BRUM: PROG er ae es ae ee 50
PE PROMI. UE tcl c ws Me ees es Us e 10
i DP PUVODEMBSIOR et ey ia ie a CU EN gas oe iy ae
m Sulphide, Fused..... 2.2.0... LMA ua ites Oe Per lb. .80
ee Kf CSE Serr ear are tae alk. ef Wd
‘<6 i ee es te a Cine a Per oz,, -10
MEMNRNR a Me ec tar ink: Per dram, 9.00
Beptriaeett. Pure. oi oS elke Per Ib, 35
Moirite, Ammonia, U.S: Poko ss “ 35
Bivontiuin; Mott. 9.0.0.2 He tegen, ber gr. © 260
wtrontia, Carbonate, Precc;. ... 0... oS es Per oz., -10
« MG es a a a so os. ae 30
fe Cileride: OC; Poot oc: Per lb. $1.50 “ 10
ei ria re bee Per lb. -45
f . RPMR eR Ce ee ae ers aes (eee
Sulphate. See Minerals.
‘i % OPE eke ee eects ...Per Ib, <4
Strontianite.
UPON iis Olivet, PUleH oe. Po ek Per 02z.,3-00
Be BMG en hee a denne hes G3 6 BY
is SAMMMIO, fo ek ee eS a Per dr., .75

tae ox ott he eae ee
204 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE
MalpMUr, Flos. so cee a a eee oe ee Per lb., $ .0§
~ POOR eos ee a ia. oe Lie ee ear ne pe és 06
Chloride 3 2869 ui % cen tee ee oe Per. 02., +25
«f LOGIGG. ss ok ee ee > 45
- Prec0s “Pure 25 (oS a eee Per lb., 25
T.
Tellurium, Mett.......... pata cota Per gram, 1.50
SRMODBING, PUT oi i eee See eee Per gr., .50
‘Pheine; Pure, Athalow 0 oh as a es Per dr., 5.00
TRALEE UN ee a eh Ra Per gram, .50
« UBIOTIOR Gy Roster ice hee a a ee oe 50
POSIO Ae oe Soa vs ee ee Per 0z., 1.50
Test Paper, Litmus, Blue.......... Per sheet, .05, Per quire, .80
= nS Tem ca nai ag: a 05, % 80
x «“ Neutral... 2... ee SOF. es 80
af Brazil Wood; se. a6 0d, $s .80
- Georgina... eeu ea % .06, f 1.00
s CURRIN TSE oe eae che 66 2 es fe 1:25
f TARTYNOTIO. Fee % 05, a .80
“ Sulphate, Manganese... ‘a 05, « .80
* Schonhbeth’s’ Ozone... cs eho sw ous Per pack, .10 |
«f Hydrosulphuric Acid. .Per sheet, .05, Per quire, .75 :
Pin; Mott.,.in bare. oie. 0.8 bk a ee Per lb, .60 ‘
<6 6 Pare, in SOME. ote tea oe a :
Pe OE, EIGAUR she cate gs Gen te tee iden aa ie scue i ae :
eS eth, ATTARUILOR e665 7 ois ON evan es fs 1.25 Fe
* Chloride, Pure, proto..... po SRS NR POS oe ¢ TO q
“< « « Liquid, non Aqueous.......... Per 0z., 50
- " ryatala, ‘Opts Fe scieg lets tre wie ekine Per lb., 1.00
&e $6 mf Cent ce} aw wo ed a pads by Fa 50 :
Pos ORE, PUP OE ie cick s ohs AP eM A eee a ee te 20 ;
At) POU DIGG 055): oe ews, 8d eateieds dr Oe mE es Per 0z., .25 i
6: Ba pwd, POCO. 5.5 50.ca in boy Wale doten Wik NET en if 20 4
Tungsten, Metts. 25 sa Veco es Per gram. .50
«s OKIGS Co ah Saas a Was Pie ties ‘6 45
Turmeric, Pow ee ee RES ena Per 0z., 0d

Toluol.

OF CHEMICAL AND PHYSICAL APPARATUS. 205
U.
‘Uranium, Acetate, Pure, O.P....... Diy Sheek oats Per oz. $ 1.00
& RMAONR gO ee ee ep NO ef tf 1.00
aS DRAGER SAE Pe Ey oR eee eb ba of 1.00
gee PANO ha a bo Fo ae Se Sap 8, es 1.00
¥ URANO a Oe pe EONS oh ere Per 0z., 1.00
PR IE er yi ee eA ah cele es Mt ee
em IA SO ENS Sa Ue Lk Ea dP he es f 1.00
¥.
2 OS CIURINIR ag» © Nap eal OP AS al Mg gy a a * 10
) Z.
BT re ree ea baer ee ere ito ea Per lb. 20
a PY re CePAR Lod aire tig ec en cs es Per lb. 50
i. meorate, Unrvebe Ca Pi res Ciel. Per lb., $1.00, Per 0z., .10
in aera BS) COR Lo io vats oe aa ig Yel. Per lb,, .25
ss Ee a Ne Ry DMOOTERS HOR SN sie x cefiece v acoce' sis. #s ag 60
He PRL EPINOMRRLO 6 2G. SoS es what AMO AN a einle Nac aw o's Per’oz., 46
Bie SRPPRIORLL, © 7p Tip A USER ah io cleo ble Sess pork a ON 5 ie Per lb., 1.25
et MaNeOe SITY CO bag o's she oo lad o's Rigi ohe pai ae Per 0z., .10
Sa eaerponaLe, + ure, FreCG. os 6G. Per ih. 35, Per oz,” 05
Be YOUNG ne eee hte a Ee cpt eis yy Ké 30
Dy ROTOOVAR Ma. i inc ok Pua ceca te Sree Saws Seecaun te 30
See VOIOPROBURIEC oaks Rae EASA Gh ak ewok os aU
We OL tes os ye be ies oo cto ek Wb awe bibs eek: .60
BT IAB. es ee re ois S: ety aS Oe " 00
CB RE a TIRE SS ea cg KEE a oR ORD | as 30
Wee eNO oR OCC, tc es SEN, oka co Societe’ Oh cs Per lb., 1.25
PROB RIO a OX Cy EN Ys eh ay digs s Per 0z., .80
Pe PAORU MIG Ck, Wore a Ee sues fesse Per 0z., 1.30
Re RUMOUR Lise oa ae ite aie bloat ee Se Per Ib., °-10
«< « POM eb Cee iss ee 30
ae Re er rd ede as Se bat eok wo: Per oz. -60
Piecomimm, Oxide, Pures. 6. cei ee Per dr., .50

Zircons, Native. See Minerals.

MINEHRALOGICAT

AND

GEOLOGICAL DEPARTMENTS.

DuRINnG the past year, I have organized and incorporated into
this establishment a Mineralogical and Geological department. My
aim and desire is to furnish to those requiring them, characteristic,
and, at the same time. Good Cabinet Specimens, for lecture and other
purposes, at moderate prices; also, the usual sets and series for Stu-
dents’ use, Blow-pipe purposes, etc. Each specimen, without regard
to size or price, will be distinctly labeled with full name and local-

ity. Dana will be followed in all instances.

MINERALS.

3473.—A Complete Set of Minerals, with pasteboard trays
for placing them in, each specimen being perfectly characteristic and
illustrating all the ordinary crystalized forms in which they occur.
In all, 200 specimens; size about 24 x 24 inches. This series will be

found to be very suitable for academies, seminaries, the smaller col-
leges, ete. $50.00

3474.—A Collection similar to the above, but more complete,
containing 300 specimens, 24 x 24 inches, neatly and securely packed
in wooden boxes; each mineral being numbered, with catalogue ot
same. This collection is put up and selected by a practical and.

experienced mineralogist, and will be found quite complete.
| Packed, $75.00

Shi Se Ke Sn poets A

if

a i ie eat th aaa ee ee A

i

ose Pree. -
aha aaa

cas

4 ida it
ee ae a

OF CHEMICAL AND PHYSICAL APPARATUS. 207

COLLECTION OF THE PRINCIPAL ORES OF THE METALS.

Aluminum—Cryolite, Alunite, Lead—Galena. *
Kaolin. - Manganese—Pyrolusite.
Arsenic—Arsenical Iron. 3 Mercury—Cinnabar.
Bismuth—Carbonate Bismuth, Molybdenum—Molybdanite.
Native Mett. Nickel—Nicoliferous Pyrites.
Chromium—Chromate of Iron Osmium—Iridosmine.
Cobalt—Zaffre. Platinwm—Native Grains.
Columbium—Columbite. . Silver—Horn Silver.
Copper — Sulphide, Malachite, Tin—Stream Tin, Sulph. Tin,
Native. Titanium—Sphene, Rutile.
Glucinum—Beryl. Tungsten—Tungstate Iron.
Lron—Magnetic Oxide Hematite. | Y¥ttria—Yttrotantalite.
Lathium—Spodumene and Le- | Zirconiwm—Zircons.
pidolite. Zinc-—Calamine, Blende.

Price of this collection, $15.00 to 25.00

3475.—Set of 100 Minerals, of the most commonly occurring
forms, neatly packed in pasteboard trays, etc. $15.00

3476.-_Collection of Chemical substances, for beginners in
Blow-piping, put up in tightly corked and correctly marked Homeo-
pathic vials, of two drachms capacity, all C. P. Recommended by
Kobel. About 50 in all, $7.00; about 25, $3.50
This includes a specimen of all the ordinary metals in a pure
state for experimental reduction with Blow-pipe.

3477.—Blow-pipe Reagent Cases, for prospectors, mineral-
ogists, travelers, etc.; consisting of Berzelius’s Blow-pipe, with Plati-
num tip, Platina wire and foil, pair Pincettes, and ten of the most use-
ful dry Blow-pipe Beagents, as follows: Borax, Boracic Acid, Oxide,
Copper, Carbonate Soda, Microcosmic Salt, Fluoride Calcium, Sul-
phate Lime, Silicic Acid, and pure Tin. All complete, in an elegant
polished mahogany case. 7 $7.00

3478.—The same, with the addition of one Agate Mortar, one
Mineral Hammer, one Anvil, three pieces of Charcoal, six glass Tubes
right size for making Blow-pipe Flasks, three glass Stirrers,—heavy
glass Spirit Lamp, and four glass stoppered bottles filled with Hy-
_ drocloric, Nitric, Sulphuric Acids, and Cobalt solution. $12.50

_ 8479.—Ditto, ditto, ditto, with Plattner’s Blow-pipe Lamp in-
stead of Spirit Lamp. $3.00 extra.

208 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

3480.—A Collection of minerals of most excellent size, and of a
character guitable for placing on the shelves of the College Jabinet,
at the uniform price of 50 cents per specimen, averaging about 3x3
inches in size. These minerals were collected by a well known
mineralogist of this city, and each specimen is a perfect example of
its kind. They are not completely classified, and, therefore, I will
sell them singly at an extremely low figure. Some of these, for
example, Kyanite, Tourmaline, Zinc Ores, etc., are really deserving of

very much higher prices.

from American localities.

The greater part of this collection is

Agate, » Chalcedony, Felspar,
Allanite, Chaleopyrites, with Fluorite,
Analcine, Epidote, Flint,
Apatite, Chlorite, Franklinite,
Asbestos, Calcified Wood, Flos. Ferri,
Augite, Cinnabar, Float Stone
Azurite, Clay, Concretions, Galenite,
Asphaltum, Clintonite, Garnets, Massive,
Arragonite, Coccolite, Rhomboidal,
Augite, Pyoxene and Columbite, ‘ Precious,
Scapolite, Copper, Native, Gibbsite,
Amyegdaloid, Copper, Native, with Graphite, Massive,
Alunite, Epidote, as Cryst.,
Actinolite, Cryolite, Gypsum, Massive,
Anhydrite, “ with Spathic Iron, Cryst.,
Anthropolite, Copper, Native, with Halite,
Barite, Epidote and Ortho- Heavy Spar,
Bismuth, Mett. clase, ¢é “ with Iron
Beryl, Chondrodite in Cal- _ Pyrites, etc.,
Blende, cite, Hematite,
Brucite, Chlorophane, Heulandite,
Calamine, Chalcocite, Hornblende, Massive,
Calcite, Ferruginous, Dolomite, N Cryst.,
*¢ : Cryst. Dioptase, Hornstone,
¢ ~ Massive, Diallage, Hypersthene,
“« Granular, Datolite, Hyacinth,
Cassiterite, Emery, Idocrase,
Celestine, Epidote, Ilmenite,
Cerite, Ekelbergite, Iron Specular,

OF CHEMICAL AND PHYSICAL APPARATUS. 209

Iron, Magnetic,
« Pyrites, ;

Jasper,

Jaspery 'T'rap,

' Jeffersonite,

Kaolinite,

Kyanite,

Labradorite,

Lepidolite,

Lignite,

Limonite,

Magnetite Cryst.,

ee Massive,

Malachite,

Marmolite,

Margarodite,

- Mica, with green
Tourmaline.

Mispickle.

Molybdenite,

Moscovite,

Natron,

Obsidian,

Olivine,

Opal, Common,
* Wood,
“Fine,

Orthoclase,

Orpiment,

Pargasite,

Porphyry,
Pearl. Spar,
Pectolite,
Petalite,
Plumbago,
Prase,
Prehnite,
Pyrites, Iron,

4 Gopper,

«Magnetic,
Pyrolusite,
Pyoxene,
Pyrrhotite,
Quartz, Crystal,

66. OBB)

« Smoky,

“ —_ Geodes,
Realgar,
Rock Crystal,
Scapolite,
Stibnite,
Selenite,
Seyberite,
Schefeldite,
Smoky Quartz,
Sepentine,
Silicified Wood,
Sillicious Sinter,
Stilbite,
Spodumene,

Sulphur,
“with Celestine,
Strontianite,
Sphene,
Spinels, pimk and
Chondrodite,
Pargasite, etc.,
Spinels, Black,
Spathic, Iron,
Steatite,
Syenite,
Sunstone, -
Staurotide, | ;
Tabular Spar,
Tale,
Titaniferous, Iron,
Topaz, |
Tourmaline, Massive,
‘ Cryst.,
2 Green,
Tremolite,
Wad,
Willemite,
Witherite,
Wolframite, :
Wood, Petrified. ted
oO pal, ,
Zine, Blende,
Zincite,
Zircons./

3481.—A Set of Minerals, for illustrating the various shades
assumed by minerals when generally in crystaline state:

. Carrara Marble,
. Calcites,
Quartz,

. Tale,

. Obsidian,

. Pyroxene

. Azurite,

. Fluor Spar,

Dri DO SP WH

White. 9. Dioptase, Green.
: es 10. Actinolite, ne
Gray. 11. Sulphur, Native, Yellow.
ce

12. Common Opal, «

Black. 13. Jasper, Red. - nee
«14. Lepidolite, or oe
Blue. 15. Agatized Wood Brown. :
e 16. Mountain <“ S ee

Complete, in case, $10.00 dag |

210

E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

3482.—A Collection of substances well suited to illustrate
the principal Blow-pipe Reactions, neatly put up in well corked vials

or specimen tubes of uniform size.

Carb, Soda,
Borax,

Micro, Salt,
Bisulph., Potassa,
Boracic Acid,
Fluor Spar,
Nitrate Cobalt,
Oxalate Nickel,
Oxide Copper,
Chloride, Silver,
Lead,

Iron,

Tin,

Bone-Ash,
Chloride, Potassium,

Bromide, *
Todide, ff
Chloride, Sodium,
“ Ammonium,

Subchl'de, Mercury,
Protochloride, “
Antimony,
Arsenic,
Bismuth,

- Cadmium,
Silver,

Alloy, Mercury and
Tin,

Alloy, Lead and An-
timony,

Alloy, Lead and Bis-

muth,

Alloy, Lead and Zinc,
* Tin and Copper,
Alloy, Zine and Cad-

mium,
Zine,
Rock, Crystal,
Gypsum,
Calc., Spar,
Strontianite
Witherite,
Magnesite,
Mica,
Felspar,
Albite,
Sulphides, Cu., Sb.,

and Pb.
Sulphides, Arsenic,
and Antimony,
Onofrite, or Claus-
thalite,
Chlorate, Potassa,
Alumina,

Sulphate, Copper,
Nitrate, Lead,

- Oxide, Antimony,

Arsenious Acid,

Ox., Bismuth,

Ox., Cadmium,

Sesquichloride Chro-
mium,

Ox., Cobalt,

Proto-oxide, Mercury,

Very complete.

$25.00
Molybdie Acid,
Oxide, Silver,
Binoxide, Tin,
Tungstic Acid,
Sesquichloride Ura-
nium,
Oxide, Zinc,
Chloride, Copper,
Arsenite, “
Petalite, |
Hematite,
Rutile,
Pyrolusite,
Lepidolite,
Apatite,
Franklhnite,
Pitchblende,
Chromic Iron,
Cerusite,
Malachite, :
Gray Antimony,
Tron Pyrites,
Copper “
Mispickel,
Smaltine,
Cobaltine,
Realgar,
Cinnabar,
Copper Nickel, :
Molybdenite,
Berthierite,
Tetrahedrite.

3483.—A Set for illustrating the various temperatures of fusi-
bleness of various minerals, according to Elderhorst. In case, $1.00

1. Gray Antimony,
2. Natrolite,

3. Almandine, or Iron Garnet,

4.
5.
6.

Actinolite,
Orthoclase
Broncite.

OF CHEMICAL AND PHYSICAL APPARATUS. 211

3484.—A Set of the various forms of Fossil Fuel. Price, $3.50

1. Anthracite, 5. Brown Coal,

2. Semi-Bituminous, 6. Lignite, ;
3: Bituminous, 7, Asphaltum or Bitumen,
4. Petroleum, 8. Peat.

3485.—Series of Ten Minerals, for illustrating and testing
the different degrees of hardness of minerals:

1. Tale. Foliated, 6. Felspar, Cleavable variety,
2. Rock Salt, ; %. Quartz, Transparent “
3. Calc. Spar, Transparent, 8. ‘Topaz, ws Crystal,

4, Fluor Spar, Crystal’d variety, 9. Sapphire, Cleavable variety.
5. Apatite, Transparent Cryst. 10. Diamond.
Price, $5.00. In elegant wood case, $1.00 extra.

3486.—A Set of Minerals, for illustrating metalic color.
In case, $3.50

1. Native Copper, 4, Native Antimony,
2. Magnetic Pyrites, 5. Galena,
3. Copper Pyrites, 6. Magnetite.

3487.—I have a few superior specimens of that curious variety of
Quartz Rock, termed Itacolumite. The shape and size of these fine
examples of this mineral are just right exactly, for class exhibition,
viz.:in sawed slabs, about eight and one-half inches long, two inches
wide, and one and one-eighth thick. Price, each, $2.00

d488.—A very Complete and well arranged cabinet of good sized
specimens of minerals, intended for the use of Blow-pipe students and
public schools, put up in sections of about fifty minerals, each sec-
tion enclosed in handsome case, with movable top, with numbered
catalogues. Per section, $6.00

3489.— Ditto, ditto, consisting of full series of Rocks, of the various
formations, arranged in accordance with Dana’s System of Geology,
with catalogue. For section of 50 specimens each, $5.00; 10 sec-
tions, $40.00.

3490.—A Set of Minerals, illustrating Cleavage:

1. Galena, | . t.-Felspar, 13. Sulphur,

2. Idocrase, 8. Calcite, 14. Pyromorphite,
3. ‘Tournonite, 9. Fluor Spar, 15. Cryolite

4. Barite, 10. Blende, 16. Tabular Spar,
5. Gypsum, 11. ‘Tungsten, 17. Iceland Spar,
6. Hornblende, 12. Limonite, 18. Rutile.

Complete, in pasteboard case, $10.00

R12 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

3491.—A Sui of the various varieties of Mineral Oils, six speci-
mens in all, put up in clear flint sample vials, for exhibiting to
students the natural properties, color, ete., of petroleum, as found
in the several localities of the United States. These samples range

in specific gravity from 26 deg. Beaume to 50 deg. Beaume. $5.00 |

3492.—Minerals, chiefly American, unclassified; size about
agx24; excellent for completing amateur collections; all picked
specimens; at the uniform price of, each, 29
The Calcite and Aluminous series in this selection are very well
assorted, and are quite complete. Included in it are some speci-
mens of that curious quartzose crystalization, from Bohemia, termed
there, Kapp-Stein.

3493.—I have on sale a collection of Lava and Volcanic Tufa,
which is, I think, worthy of considerable attention. It is a full series,
from the various volcanoes in the Sandwich Islands, and was col-
lected by Commodore Wilkes, in 1848, when there. It would be an
exceedingly interesting addition to any college or private collection,
possessing as it does also, great historical interest. T’wenty speci-
mens in all. $10.00

3494.—A Suit of Colorado Minerals, including all of the ores
and minerals found in this great mineral-bearing Territory. This is
a quite unique and interesting little collection, suitably labeled and
arranged in fine pasteboard case, with partitions and movable top
50 in all. Price, : $6.00

ELEGANT AND RARE CABINET SPECIMENS.

This part of my collection I am giving great attention, and
assure my patrons that nothing under this head will be found in-
complete. Included in it I may mention some extraordinarily fine
and beautiful specimens of Agate, finely polished.

3495.—Splendid Falherz Specimens, from Germany.

3496.—Magnificent Fluors, from Derbyshire and Cumberland,
England.

3497.—Elba Iron Ores, Gotite, etc., of perfect beauty and size.
3498.—That very Rare and Exquisite, as well as wonderful,

production of oceanic life, called “ Venus’ Flowing Basket,” or “ Ex-
plectella Speciosa,” found 60 fathoms deep nearthe Phillipine Islands,

OF CHEMICAL AND PHYSICAL APPARATUS. 213

and for a specimen of which Cummings, the great English natural-
ist paid, in London, £30 only six or eight years ago. $5.00 each.

3499.—A Complete Set of Fussiliferous Rocks, of about 4 x
4 ins. in size, illustrative of the geological formations of New York. All
of the New York groups and periods are fully illustrated with speci-
mens from the principal localities in that State. Hach specimen
and group is characterized by its distinctive fossil or fossils. This
collection of rocks has received the great approval of all the col-
leges who have purchased it, and is certainly deserving of notice,
not only on account of its having been obtained entirely from New
York State, but, also, for its completeness. It is believed to be the
only collection of the kind ever put on sale in this country, and
will be found to be eminently well adapted for teaching Dana’s
Geology in colleges, schools, ete. Carefully labeled with name of
group, fossil, etc. 55 specimens in all. $25.00

3500.—There are left at my disposal two Cabinet Collections of
Minerals, belonging to gentlemen of the highest standing in the
world of science, but who, for private reasons, wish to dispose of them.
Selected with rare taste and perfect mineralogical knowledge.
through a long series of years, each specimen of these collections
will be found to be unique examples of their class, and every class
most fully illustrated. They have been gathered together from the
‘ most celebrated localities of the world, and contain specimens val-
ned at $250 to $300 each.
This is a rare opportunity for colleges. Price, $3,000 to 6,000
3501.—A Case of German Minerals, beautifully arranged, in
an elegantly polished wocd case, with drawers, containing 200
minerals, carefully wrapped for transportation, and completely clas-
sified and labeled; size of specimen averages about 14 x 2 inches
| Price, with case included, $25.00
This case would make a very useful and handsome holiday
present. :

3502.—The same, as above, in all respects, except containing

150 minerals instead of 200. : Price, $20.00
3503.—The same, as above, in all respects, except containing
100 minerals instead of 150. | Price, $15.00

For the remainder of this department reference may be had to
a separate Catalogue of Ward’s Plaster Casts.

APPARATUS IN SETS,

AND

FOR SPHROTIAL PO RPOoOSsS ses.

The marginal figures in small type refer to numbers 1n regular catalogue.

3504.—Set of Apparatus and Chemicals, for fifty initiatory
experiments for boys and girls, with directions for using. These
are packed in a neat wooden box, with compartments and hinged

lids, and consists of the following articles. Price $10.00
APPARATUS.
1 Glass Flask, 1 02z., 3 Test Papers, 1 each color,
1 Small Sand Crucible, 50 Small Filters, cut,
1 Shallow Sand Bath, 2 in., 1 Jeweller’s Blow-pi e,
1 Small Porcelain Crucible, 1 Corrugated Funnel, 2 in.,
1 Glass Mortar and Pestle, 2 in. { Porcelain Ev aporating Dish, 3 in.,
2 ‘“ Stirring Rods, 1 Piece Tin Foil,
1 Spirit Lamp, 1 ‘ Rubber Tube,
1 Small Tripod, 1 Pair Iron Pincettes,
1 Test Glass, with lip, 3 inches Copper Wire,
4 Test Tubes, O72 4 en 4

2 Test Tube Holders, 2 ft. Magnesium Ribbon,

a ee eS eI Ee Sg Ie ke

be
i:
By
2

ye
e
Be
is
V
Ee
a
i
ike
we

OF CHEMICAL AND PHYSICAL APPARATUS.

Acid, Boracic,

‘* — Benzoic,

‘* Tartaric,
Alum,
Ammonia, Carbonate,

s Chloride,
vs Oxalate,
Antimony, Metallic,
- Sulphide,
Baryta, Nitrate,
Borax,
Camphor,
Charcoal,
Cobalt, Chloride,
Copper, Nitrate,
‘¢ Sulphate,
Fire Clay,
Fluor Spar,
Galena,

CHEMICALS.

Galls, Tinct.,
Gum Arabic,
Tron Filings,
‘* Sulphide,
‘« Sulphate,
Isinglass,
Lead, Acetate,
f= Oxide,
Lime, Carbonate,
“Chloride,
‘« Phosphate,
Litharge,
Litmus,
‘“< Paper, Red, Blue,
‘* Tincture,
Logwood,
Lycopodium,
Magnesia, Carbonate,
Magnesium, Sulphate,

21a

Manganese, Oxide,.
Mercury, Nitrate,
Pharoah’s Serpents,
Phosphuretted Oil,
Potash, Prussiate,
Potassa, Bichromate,

AS Carbonate,
RE Caustic,
” Chlorate,

¢ Nitrate,

Potassium, Iodide,
Silver, Nitrate,
Soda, Carbonate,

‘« ~ Phosphide,

‘Sulphate,
Strontia, Nitrate,
Turmeric Paper,
Zinc, Granulated,

‘* Sulphate.

3905.—Set of Apparatus and Chemicals, according to the

following list, adapted for use in ordinary schools.

1 Alcohol Lamp,

1 Retort Stand, 2 Rings,’
3 Pint Flasks,

3Quart ‘

6 Test Tubes, ass’d sizes,

1 oz. Acid, Arsenious,

S a “ Muriatie,
ted “< “Nitric,
rs *" Oxalic,
ans ‘¢ Sulphuric,
~ 4 Alum,
4“ Ammonia,
Nae - Carbonate,
4“ Ammonium, Chl’de,
4“ Antimony,
aS - Tartrate,
1 Baryta,
4 “ Bismuth,
4“ Borax,
1 “ Cobalt, Chloride,
»4 “ Copper, Sulphate,

APPARATUS.

1 Test Tube Holder,
1 Pneumatic Trough,

Price, $10.00

"1 Pack. Cut Filters,
4+ 1b. Glass Tube,

1 Small Porcelain Mortar,*3 ft. India Rubber Tube,
2 Small Evap’ing Dishes, 1 Glass Funnel, 3 in.

CHEMICALS.

. Fluor Spar,

‘ Iodine,
“Tron, Sulphate,
‘¢ Lead, Acetate,
Lime, Chloride, _}
lb. Manganese, Oxide,
‘Mercury,

; hy Chloride
“Nut Galls,

‘¢ Potash, Prussiate
Yellow,

=O
N

We ee RH OD
© a
N

1 “ Ditto, ditto, Red,

2 “ Potassa,

a “ Bichromate,
a “Chlorate,
a “Nitrate,

C9 Od 00 HH WEE W He

4+ oz. Potassium,
or . Cyanide,
i is Iodide,

‘< Silver, Nitrate,

2“ Soda, Sulphate,

‘* Sodium,

Strontia,
“ Sulphur,
Wax,

ft. Iron Wire,

‘“ Magnesium Wire,
1 Piece Copper,

oo me,

*2 Sheets Litmus Paper,

Bape Turmeric ‘

1 Stick Phosphorus.

3906.—Set of Apparatus and Chemicals, the same as the
foregoing, with the following additions.

1 Detlagrating Spoon,
1 Evolution Flask, with
Funnel and Tubes,

_ 6 ft. India Rubber Tube,

APPARATUS.

1 India Rubber Gas-bag
1 j
1 Jeweller’s Blow-pipe,

Price, $15.00

, 2Stop-cocks,
1 Tripod,
1 Wash Bottle.

3507.—Set of Apparatus and Chemicals, following. care-

fully packed in a dovetailed box, 1

i

~-

vith sliding lid, and adequate te

o

216

E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE ~

the performance of the exveriments in “Steele’s Fourteen Weeks in

Chemistry.”

APPARATUS.

1 Alcohol Lamp, 4 0z.,

1 Deflagrating Spoon,

2 Evaporating Dishes,

1 Evolution Flask, with Funnel and
Delivery Tube,

1 Florence Flask, with Delivery Tube,

1 Fnunuel, 3 in.,

1 Jeweller’s Blow-pipe,

1 Small Lead Tray,

Price, $20.90

| Mortar and Pestle,

1 Ring Platinum Sponge,

1 Stop-cock and Connector, for Gas-
bag,

6 Test Tubes, assorted sizes,

1 Tripod,

2 Tubes, ‘for H ydrogen Tones,

+ Ib. French Glass Tube,

i ft. India R’r Tube, for connections.

CHEMICALS.

“¢ Ammonia,

“ Ammouium, Chi’de,
Antimony,Metallic,
Barium, Chloride,

“ee ““

Com 0D reer pet ae role rol
Cobb > be A QO WD ae

“ Todine,

‘“* Tron, Sulphate,
Sulphide,
Lead, Acetate,

oz. Acid, Arsenious, oz. Fluor Spar, 3 02Z. Potash, Yellow
‘* Oxalic, “ Gun Cotton, for Prussiate,
“Alum, Collodion, 4 A Oe Prussiate,

‘“ Potassa, Bicarbon’e,
a * Chlorate,
if Nitrate,

** Potassium,

a el le lS
zn

‘
“ Bleaching Powder, “ Litharge, x ie Iodide,
“Bone Black, 16 “ Manganese, Oxide, “Silver, Nitrate,
* Calcium, Phosph’t, “ Mercury, Chloride, Sol.,
Pieces, * Nut Galls, Ground, 3 ‘* Sodium,
+“ Carbon, Bisulphide, “Phosphorus, 4 *€ Sulphur,
4+“ Cobalt, Chloride, “ Platinum, Chlor’de, 2 ft. Magnesium Ribb’n,
Solution, Sol., 1 Specimen Metal Alu-
2 Copper, Sulphate, 2“ Potash, Caustic, minum,
4‘ Ether, Sulphuric, Sticks, 6 Sheets Filter Paper.

3508.—Set of Apparatus and Chemicals, to illustrate Wil-
son’s Course in Chemistry, packed in the same manner as the fore-

going.

Price, $85.00

APPARATUS.

1 Pneumatic Trough,

1 Alcohol Lamp,

1 Davy’s Safety Lamp,

2 Bunsen Burners,

1 Compound Blow -pipe, plain,
1 Mouth ,
1 Liebig’s Condenser,

1 Glass Oxygen Flask,

3 “ Retorts, each 1 pt.,

6 “ Tall Jars,
Me ok Receivers, each 2 qts.,

12 “ Flasks asso’d sizes, 4 to 16 0zs ,
4 ‘ Funnels, assorted,

2 lb. Glass Tule,
tt ts Os
1 Graduate, 4 ozs.,
2 Pouring Glasses,

1 Woulff’s Bottle, 1 qt.,
1 Nest Beakers,
1 ‘ Evaporating Dishes,
4 doz. Test Tubes, assorted,
‘“ Thistle “
‘“ Safety “
Jar, for Iron Wire Experiments,
1 Retort Stand,
2 Rubber Bags, 8 to 15 gals.,
1 ‘ Gas-bag, 6 gals.,
1 Piece Brass Wire Gauze, 6 ins. 8q.,
1 Platinum Foil,
1 yd. " Wire,
4 yds. 3 ins Rubber Tube,
3 Detlagrating Spoons,
3 Packs Filter Paper.

pionrol—

CHEMICALS.
Acid, Arsenious, Ammonia, Bismuth,
p ’Muriatic, ~ Carbonate, Borax,
“Nitric, Ammonium, Chloride, Cobalt, Chloride,
is Oxalic, Antimony, Copper,
i Sulphuric, a Tartrate Copper, Sulphate,
Alum, Baryta, Nitrate, Fluor Spar,

OF CHEMICAL AND PHYSICAL APPARATUS. 21%

CHEMICALS.— Continued.

Todine, Nut Galls, Potassium, Iodide,
Iron, Phosphorus, Silver, Nitrate,

‘* Sulphate, Potash, Soda, Sulphate,
Lead, Acetate, Potassa, Bichromate, Sodium,
Lime, Chloride, Chlorate, Strontia, Nitrate,
Litmus Paper, s Nitrate, Sulphur,
Magnesium, Potassium, Turmeric Paper,
Manganese, Oxide, _ Cyanide, Wax,
Mercury, as Ferricyanide, Zinc.

“ Chloride, af Ferrocyanide,

3509.—Set of Apparatus, to be used in illustrating Barker’s
Text Book of Inorganic Chemistry, packed in the same manner as

the last.

1942, + doz. Glass Cylinders, 12 in.,
Fig. 10, p. 103,

1516/4" Saltmouths, assorted,

2276.4 ‘“* Flasks, } pint,

2322. 3 ‘ Funnels, assorted,

1540. } ‘* Woulti’s Bottles, $ pint,

1538. 4 “ Woulft’s Bottles, 2 necks,

1446. 4 “ Bell Glasses, 1 pt., 2 qts.,
15 gals.,

1453.4“ Stoppered Bell Jars, quart,

3262. 4 ‘ Conical Test Glasses,

3269. 1 “ Test Tubes, 5 in.,

aoe. bee . Sn in.,

3364.4 ‘* U Tubes,

3265.4 ‘ Bulb “

2331. 4 ‘“ Funnel Tubes,

2335. 4 “ Safety ‘ Fig.11,p. 104,

1469. 4 ‘* Combustion Spoons,

2907. 4 “ Pipettes,

2402. 1 Hydrogen Generator,
2395. 1 Sulphuretted “
2203. 1 Eudiometer, straight tube,
2204. 1 Ure’s,
2189. 1 Diffnsion Apparatus, Fig.3, p.92,
1714, 1 Calcium Chloride Tube, Fig. 6,
05;
2862. 1 Siemen's Tube for Ozone,
1 Apparatus for Decomposition
of Water,
1452. 1 Copper Bell Glass, with Stop-
cock,
2055. 1 Drying ‘Bottle, Fig. 7, p. 98,

3016.

66

2054.

1971,

1478.
3108.
1960.
3186.
1602.
3234.
2066.
1969.
3226.
1405.
2382,

2221,
1422.
1899,
1885, 1

3378.
3387,
2938.

Price, $100.00

1 Tubulated Retort and Receiver,
pint,
1 66 6“ cpus

1 Metal or Glass Cistern,
Porcelain Cistern, Fig. 15, p.

117,

1 Adjustable Clamp, Jig. 15, p.
117,

"72,74. 1 Phosphorus Tripod Ap-
paratus, Fig. 17, p. 119.

1 Compound Blow-pipe,

1 Wire Gauze Cage, Fig. 1, p. 91,

1 Safety Lamp,

1 Gas Furnace, Fig. 7, p. 98,

2 Bunsen Burners,

2 Retort Stands,

4 Iron Sand Baths,

6 Combustion Spoons, with cov’rs,

1 Test Tube Rack,

1 Hydrogen Balloon.

2333. 1 Two-Gallon Gas-bag, with
Stop-cock.

1 Nest Evaporating Dishes,

1 ‘ Beakers, from 1 qt. down,

1 ‘** Hessian Crucibles,

doz. Porcelain Crucibles, with

covers,

1 1b. Glass Tube, assorted,

8 ft. Rubber “

8 ft. Platinnm Blow-pipe Wire,

, oz. Platinized Asbestos. See
Chemicals.

3510.—Set of Apparatus, arranged for the purpose of illustrat-

ing a short course of Popular Lectures.

3080.
3321.
1750.
3319.
3322.
2303.
2276.

2827. 1 Porcelain Mortar, 34 in.,
“ 1 6 se 5 “ec

2822. 1 Iron, . G8
2598. 1 Glass Spirit Lamp,

2614. 1 doz. Wicks for ditto,
2035. 1 Porcelain Dome for ditto,
2590. 1 Brass Argand Spirit ditto,
2614. 1 doz. Wicks for ditto,
2586. 1 Blow-pipe Spirit ditto,

Price, $200.00

1 pr. Trimming Scissors,
1 ‘“ Small Tongs, with bentends,
1 “Tube Tongs, wood,
1 “ Charcoal Tongs,
1 “Steel Crucible ditto,
1 “ Platinum Pointed Forceps,
$+ doz. Glass Flasks, 4 0z.,
66 se oe 8 “cc

+ ee be ee 16 se

‘7

218

2276.
2233.

“ce

3027.

sé

3031.
3040.
3033.

oc
se

3016.
“ce

sc

3234.

1422.

1434.

3269.
“

1575.
3274.

3278.
3262.
se

“ce

3226,
3367.

2357.

3353.
3215.

3206.
3237.

2322. 4
2335,
2331.
2216.
3255.
3216.
3218.
2251,

2442.

2440.
3065.
3066.
1280.
1971.
1966.

2039.

E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE ne

APPARATUS.— Continued.

2 Glass Flasks, 32 02z.,

] 3 with Delivery Tube,

1 Evolution flask, with Delivery
Tube,

3 Plain Retorts, 4 OZ,

a 8

3 “cc “ee 16 “cc

2 Clark’s Retorts,

1 Oxygen “ qua

2 Tubulated Stumaeeon Retorts,
8 02.,

2 Ditto, ditto, ditto, 16 0z.,

2 Ditto, ditto, ditto, 32 ‘

2 Ditto, ditto, Receivers, 4 02z.,

2 Ditto, ditto, ditto, Re

2 Ditto, ditto, ditto, 16 *

1 Iron Retort Stand, with 3 Rings,

1 Nest Beakers, plain, Nos. 0 to 8,

1 ef cae 1 to 5,

3 doz. Test Tubes, 5 in.

3 se ““ 6 ce

wi z Brushes, «
$8 Y Holders,

1 Nickle Plated Test Spoon,

2 Porcelain Test Plates,

2 Conical Test Glasses, 2 O2.,

“cc oe “ec 4

“ee oe oe & of

1 Test Tube Rack,

1 doz. Sheets Test Paper, - each
Red, Blue and Yellow,

1 Collection Test Metals. See
Minerals.

1 Hand Furnace, Clay, with Iron
Binding,

1 Tripod Support,

2 Table Supports, with Fork and
Pins,

1 Hinged Wood Clamp Support,

1 Shelbach’s Support, with Iron

Foot,

doz. Glass Funnels, assorted,

2 Safety es

1 Com, Filte:ing ditto,

2 Filter Dryers,

1 Pack Filters to fit Funnels,

1 Wood Filter Stand, with larm,

1 “ec “sé 9 6c

2 Porcelain Filter hone each
with 3 arms,

1 Graduated Measure, 4 0z.,

se sé 8 “cc

WWa

1

1 of “6 16 be

| Minim Glass,

1 Deep Sand Bath, 7 in.,

1 Shallow ‘ fei tf

1 Air Globe, 1 gal.,

1 Deflagrating Globe, 2 gals.,

1 Spoon,

1 F Cap,

1 Schuster’s Dropping Bottle,
plain,

2040.
3406.

1518.
1519.

1519.
1519.
1524.
1524.
1532.

3164.

3164.
3164.
2906.

2907.

2955.
2671.

3378.

3337.

9333.

1356
3022.
3023.
3358.
1583.
1405.
2402.
2220.
2225.
2225.
2225.
2216.

1885.

1897.

1893.
3408. 4
3408.
3408.
3409.
1690.
1637.
1687
2002.
1283
1942.

1446.

1446, 4

1448,
1452.
2550.

“cc

1486.
1848.
1851.

1 Ditto, ditto, ditto, stoppered,
1 Washing Bottle, pint,
1 66 quart,
2 Woulff ’s Bottles, 3 necks,
2 Bottles, with glass stoppers, for

Distilled Water,
3 Ditto, ditto, ditto, quarts,
3 Ditto, ditto, ditto, 3 gal.,
1 doz. Ditto, ditto, ditto, 8 oz.,
1 ‘ Ditto, ditto, ditto, 16 oz.,
1 Bottle, for Chlorine,
1 doz. Glass Stirrers, 3 j in.,

“
6 ‘

ce “cc , 9 sé
Straight Pipettes,
Bulbed ¥
Japanned Pneumatic Trough,
12x15,
1 Mercury Trough, 10 Ibs,
2 lbs. Glass Tubing, assorted,
6 ft. Rubber Tubing,
4 doz, Funnel Tubes,

eine b

1 “ Arsenic *

1“ Reduction “ with 1 Bulb,
4 ee ec ‘ec 2

1 Set Tubes for Hydrogen rou

1 Pipe for Hydrogen Bubbles,
1 Small Balloon,
1 Glass #: Generator,

2 Sets common Evaporating
Dishes, with lips,

1 Porcelain ditto, 6 in.,

1 ee 10 sc“

1 “ 6c 12 “

1 Set Royal Berlin Evaporating
Dishes, small, shallow,

+Doz., ditto, Crucibles, No. 2,

1 Nest of 5 Hessian “‘

1 Platinum Crucible,

doz. Watch Glasses, 3 in.,

j 6eé 4 <

4 oe “ee “cc 5 “

- eed “ Springs,

3 Small, shallow R. B. Casseroles,

1 Semi-Berlin Casserols, 4 in.,

1 6“ be 6 *

6 Assorted Porcelain Bizeiors

84.3 ‘* Glass Adapters,

6 a ‘Cylinders, with
Ground Tops,

4 doz. Bell Jars, pints,

= uarts,

J Bell Jar, with Glass Foot, 6 x
12 in.,

1 Bell Jar, ‘with Brass Cup, Stop-
cock and Connecting Tube,

3 eee Jars, with Ground Tops,

ral ,

6 Ditto, ditto, ditto, ditto, 1 gal.,

1 Berzelius, Blow-pipe,

1 Gross Assorted Corks,

Setof12 ‘“ Corkborers,

OF CHEMICAL AND PHYSICAL APPARATUS. 219

APPARATUS.— Continued.

2024. 1 Still and Worm, 2 gals.. 3256. 3 Tapers, mounted on Wires,
24(0. 2 Sets of Von Babo’s Apparatus | 1864. $ doz. Glass Covers for Jars,
for evolving Suiphuretted | 3237.1 Triangular File,

Hydrogen, 3236. 1 Semicircular ‘“
2382. 2 Five-gallon Gas-bags, fitted, “ 1Rat’s Tail “™ 4in,,
2417. 3 Assorted Gas Tubes, ee f be Barts
‘1441. 1 Small Beehive Shelf 2578. 2 Sets Chemical Labels.

3341. 1 Lead Tray,

N. B.—When gas is employed in the place of alcohol, gas-burners, with
rubber connections, may be substituted for the spirit lamps at a small increase:
of cost.

A set of chemicals, adequate to the performance of experiments with the
foregoing apparatus, can be supplied for about $25.00.

M

or i

—

3511.—Set of Apparatus, for conducting operations in Vol-
umetric Analysis. Price, $60.00

No notice is taken, in this list, of instruments which are not volumetric;
such as Balances, Weights, Boiling Flasks, Gas-burners, etc. Full information
respecting such instruments may be found in other sections of this work.

1590.1 Mohr’s Burette, 100 ¢.c., in| 1591. 1 Ditto, ditto, 50 c.c., in tenths,
_ halves, with Stopeock,
‘* 2 Ditto, ditto, 50 ¢.c., in fifths, | 1587. 1 Bink’s Burette, 100 c.c.,
“ 1 Ditto, ditto, 25 ¢.c., in tenths, | 3207. 1 Wood Support for 4 Burettes,

220 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

APPARATUS.— Continued.

3204. 1 Brass Support for 2 Burettes,
1597. 5 Erdman’s Floats to fit.ditto,
2913. 1 Graduated Pipette, 100 c¢.c., in
ones,
** 1 Ditto, ditto, 50 ¢.c., in fifths,
“ 1 Ditto, ditto, 10 c.c., in fifths,
“« 1 Ditto, ditto, 5 c.c., in tenths,
2907. 2 Bulbed Pipettes,
2899. 4 Spring Clamps, with Tips,
1946. 1 Graduated Cylinder, with Lip,
50 ¢
“1 Ditto, ‘ditto, with ditto, 100
Cc.,
“<1 Ditto, ditto, ditto, 250 c.c.,
“ 1 Ditto, ditto, ditto, 500 c.c.,

1946. 1 Graduated Cylinder, 1,000 e.c.,

2693. 1 Mixing Jar, stopper’d, j 000 c.c.,

2692.:1><. #¢ Bottle, 1,000 c.c.,

3278. 1 Porcelain Slab, 5 i in.,

1333. 1 Alkalimeter, ‘for Chameleon
Test,

2924. 2 Porous Plates, for Drying. Pre.
cipitates,

1420. 1 Set of six Beakers,

3262. + doz. Test Glasses, } 02z.,

3164.1 ‘ Stirring Rods,

2318. $ ‘“ Glass Funnels, 1 to 4 in.,

3378. 3 lb. Glass Tubing.

3267. 1 doz. Test Papers, each color, ,

2265. $ quire Swedish paper.

3512.—Set of Apparatus and Chemicals, for the perform.
ance of experiments in Agricultural Chemistry. Price, $65.00
APPARATUS.

_ 1399. 1 Small Balance for Grain w’ts,
2827. 1 Porcelain Mortar, No. 8
3410. 1 Copper Water Bath,
3066. 1 Iron Sand Bath, 5 in.,
2598. 1 Glass Spirit Lamp, 4 0z.,
2615. 3 ft. of Wick for the same,
2442. 1 Graduated Measure, 1 0z.,
2279. 3 French Flasks, 4 0z.,

“cc

3 “ "8 oz., Ss
2276. 3 Bohemian Sie S BOBss
oe " 16 02.,
2389. 1 Evolution “ with Delivery
Tube, pint,

‘

”~

1 Glass ditto, with ditto,
3040. 1 Oxygen Retort, quart,
2402. 1 Hydrogen Generator,
1943. 1 Cylinder, with Lip and Glass
Foot, 2x12 in.,
1446. 1 Knobbed Bell J ar, pint,
is Ses quart,
1453. 1 Biceteiad Be
iS, és ‘ “gallon,
1687. 1 Porcelain Casserole,
2002. 1 Digester,
3033. 1 Stoppered Retort, 4 0z.,
3027. 1 Plain Retort, 4 07. re
1 Brass Retort Stand,
1971. 1 Deflagrating Globe, 1 gallon,
1966. 1 “i Spoon and Cover,
2222. 6 Semi-Porcelain Deep Evaporat-
ing Dishes,
2210. 2 Berlin ditto, about 8 in.,

2970. 1 Conical Jar, tall, 4 0z.,
3262.3 “* Test Glasses, assorted.
small,
3226. 3269. 1 Test Tube Stand, filled,
3274. 2 Test Tube Holders, wood,
2322. 1 Glass Furnel, 2 inches,
66 24

1 sé se

“c“ i ‘ oe 3 “
1897. 1 Sand Crucible, No. 0.

RNa yee "i No. 1.

“cc 1 ““ “ No. 2.
2253.1 Pack Filters, 5 in.,

4 6“ “6 6 in.,

“ 1 66 “cc 7 in.,
3217. 1 Filter Stand,
14x3. 1 Black’s Blow-pipe,

2925. 1 Small Platinum Capsule, 4 oz,

3125.1 ‘ Steel Spatula,

3321. 1 pair Japanneu Tongs,

3155. 1 Horn Spoon,

3350. 1 Porcelain Triangle,

3164. $ doz. Stirring Rods.

3407. 1 pair Watch Glasses,

1755. 1 Watch Glass Holder,

2268. 4 doz. Sheets Litmus Paper, each
color,

1516. 4 doz. Salt-Mouths, 1 0z.,

1517.4 ‘ Tinctures, 1 0z.,

1504. 15 doz. Packing Bottles, corked,
2 0z

oe ae Ditto, ditto, ditto, 4 0z.,
2935. 1 Specimen Platinum Foil,

2 ditto ditto, : <5: 10:4 2938. 1 a Wire,
CHEMICALS. 3

1 oz. Acid, Acetic, 3 oz. Ammonium Chlo- 2 oz. Copper, B’k Ox-
16° «42> Bartaric; ride, 1de,

“ Alum, Crystals, 2 ‘ Barium,Chloride, 2 ‘ Iron, Proto-Sul-
1 “ Ammonia, Carbo- 2 ¥ Nitrate, phate,

nate, © 4 ‘*“ Caleium, Chlor- 4 “ * Sulphide,

Bs ‘* Nitrate, ide, Fused, 4 “ Magnesia, Cale’d,
las “ Oxalate, 4 «6 “ ” Hydrate, 4%.) “©. Sulphate,

OF CHEMICAL AND PHYSICAL APPARATUS. 2a.

CHEMICALS.— Continued. |
8 oz. Manganese, Per- 1 oz. Potassa, Carb’e, 1 oz. Soda, Biborate,

: Oxide, 4 * ‘‘ Chlorate, te “Carbonate,
1 “ Mercury, Red Ox- 1 “ “Hydrate, eee ‘« Phosphate,
‘ide, Bas lee “ Nitrate, 6 “ Zinc, Grarulated.
+ “ Phosphorus, 3“ Silica, in powder,

— 3513.—List of Apparatus, for use in the Volumetric Analysis

of Urine. Price, $20.00
1590. 1 Mohr’s Burette, 2322. 1 Glass Funnel 23 in.,
3206. 1 Burette Support, 2255. 1 Pack Filters for each size,
2899, 1 Clamp and Tip, with Rubber| 3216. 1 Funnel Holder,

Attachment. 3262. 4 doz. Test Glasses, } 0z.,
2913. 1 Gratluated Pipette, 25 ¢c.c. inj} “ 4 “ # I 6 oa les

fifths, 3269. ¢ ** “ Test Tubes, with wide

“1 ditto ditto, 25 ¢.c. in tenths, mouths for Hydrometer,

. 1946, 1 ditto Cylinder, 500 c.c. lipped, | 3226. 1 Support for ditto,

2909. 3 Fixed Pipettes, ass’d, 5 to 20, | 1420. 1 Set of six Beakers,
2906. 3 Straight “ for decanting, | 1438. 1 Beaker Flask,
2276. 1 Bohemian Flask, wide mouth, | 3278. 1 Porcelain Slab, 6 in.,
x pint, | 2922, 4 doz. Porcelain Plates for Indi-

bah és 66 8 0z., cating Test,
tens fs ee cae 2634. 1 doz. Sheets Litmus paper, each
6“ l ““ “ 95 sc color,
2636. 1 Litre e 1519. 1 Bottle for Litmus Tincture,
‘* 1] quart’r Litre ‘‘ 3406, 1 Wash Bottle, pint,
2322.1 Glass Funnel, 1} in., 3164. 4 doz. Glass Stirrers, 6 inch.
oe 1 ‘ ‘ 9 ‘

3514.—Set of Apparatus and Chemically Pure Tests, for

use in the Qualitative Analysis of Urinary Deposits. Price, $37.50

APPARATUS.
1400. 1 Balance, with Weights, 3321. 1 pr. Tongs for holding the same.
2598. 1 Spirit Lamp, 1675. 3 Porcelain Capsules, assorted,
2615. 1 yard Lamp Wick, 3269. 8 Test Tubes, 6 in.,
1644. 1 Lamp Cylinder, 3209, 2 * feo Ax] in.;
3233. 1 Iron Stand, with 2 Rings, 3267. 3 doz. Assorted Test Papers,
3066. 1 Sand Bath, 2322. 1 Glass Funnel, 2 in.,
3410.1 Water ‘“ 2255. 1 Pack Filters, to fit the same,
3353. 1 Tripod, 3164. 3 Glass Stirrers,
3461. 1 sq. ft. Wire Gauze, 3104.4 “ Slides,
2518, 19. 1 Urinometer, with Solution | 3407. 3 Watch Glasses,
Tube, 2440. 1 Graduated Minim Glass,
1885. 1 Porcelain Crucible, No 1, 2906. 2 Straight Pipettes, 6 in.
2925. 1 Platinum Capsule, } oz.,
CHEMICALS.
8 oz. Acid, Acetic, — - 2 oz. Ammonia, Oxalate, 4 oz. Copper, Sulphate,
. 8%: “ “Hydrochloric, 8 “ ss Spirits, +‘ Silver, Nitrate,
Bo ae NR EEICS 2 Baryta, Nitrate, 1 “ Zine, Chlo’ide, fus’d.

2 ‘© Ammonia Carbon’te 4 “ Potash, Caustic Sol,

3515.—Apparatus, for Qualitative Chemical Analysis.
Price, $50.00

2829. 1 Porcelain Mortar, 2} in., 1644. 1 Lamp Cylinder Furnace,
2599. 1 Spirit Lamp, 3 oz., 3351. } doz. Wire Triangles,
2615. 1 yd. Wick for ditto, 3066. 1 Five-inch Sand Bath,
3080. 1 pr. Trimming Scissors, 1885. 1 Porcelain Crucible, 1 in.,

3350. 2 Porcelain Triangles, 2424. 1 sq. ft. Iron Wire Gauze,

R22

E. B. BENJAMIN'S DESCRIPTIVE CATALOGUE

APPARATUS.— Continued.

3234. 1 Iron Retort Stand, with 3 Iron

Rings,

2424.1 Coarse Wire Netting for sup-
porting Tubes when in the
Sand Bath,

2003. 1 Porcelain Digester,

3323. 1 pr. Steel Crucible Tongs,

1671.6 Small Evaporating Capsules,
plain, glazed both sides,

2276, 1 Cooking Flask, each 2, 4, 6 0z.,

1419. 1 Nest Beakers, 1 to 5,

3027. 1 4-oz. Retort, plain,

a0sa. 1 * 3 stoppered,

3014.1 “ Tubulated Receiver,

3331. 1 Clark’s Retort,

3217. 1 Funnel Holder,

3164. 1 doz. Glass Stirrers, 3 in.,

“ “ Ditto, ditto, each 6 and 9in,

- 2318. 1 Glass Funnel, each 2, 2}, 3 in.,

2255. 1 Pack Filters, each size to fit
above,

3226. 1 Test Tube Stand, filled,

2221.4 doz. Semi-Berlin Evaporating
Dishes, a set,

3407. 1 pr. Watch Glasses, 2in.,

1755. 1 Watch Glass Holder,

1690. f Smatk Royal Berlin Casserole,

3462. } doz. $-oz. Test Glasses,

2906.3 “ Straight Pipettes, 6 in.,

2907. 2 Cylinder

“ 1 Bulb +

1 doz. 6-in. Test Tubes,

3 Test Tubes, 2in high, lin. wide,

1 1b. Glass Tubing, #-in. bore,

2 Wooden Test Tube Holders,

1575, 2 Test Tube Brushes,

3406. 1 Wash Bottle, pint,

3387. 1 ft. Rubber Tubing,

2039. 1 Shuster’s Alkalimeter, plain,

6 Pieces of ordinary Glass, 4x6 in,

6 Sheets Test Paper, assorted,

1 Small collection of Test Metals,
for Precipitating,

1 Evolution Flask and Delivery
Tube,

1 Plate Cobalt Glass,

1 Hollow Glass Prism, small,

1 Flat Testing Slab,

2 Porous Plates, for drying Pre-
cipitates,

3259.
“ec

3378,
d274,

3267.

2233.
2427.

3278.
2924.

A collection of forty Reagents can be included in the above, in bottles, if

required, at reasonable prices.

3516.—Apparatus for Physicians, for Medical Tests. $125.00

2829.
3125.
1400.
3451.
2439.

1 Small Porcelain Mortar, No. 0,

1 4-in. Steel Spatula,

1 Apotheecaries Balance, small,

1 Set Grain Weights, for ditto,

1 Graduate, 1 0z.,

2598. 1 4-oz Spirit Lamp,

2615. 1 yard Wick for ditto,

3352 or 753. 1 Tripod,

3234. 1 Retort Stand, with 3 Rings,

3066. 1 5-in. Sand Bath,

2424. 1 Coarse Wire Gauze, for support-
ing Tubes,

6 Wire Trian

1 sq. ft. Iron gles, Gauze,

1 Berzelius’ Blow-pipe,

1 Plattner’s Blow-pipe Lamp, on
Stand,

4 pieces Prepared Charcoal,

1 Charcoal Support,

1 ft. Blow-pipe Platinum Wire,

1 sq. in. Platinum Foil,

1 Plat. Crucible, with cover,4 oz,

1 Platinum Capsule, 4 0z.,

3 ft. Fine Copper Wire,

1 pr. Platinum pointed Forceps,

1 Platinum Spoon,

1 pr. Blow-pipe Tongs, witb Pla-
tinum Points,

1 pr. Steel Forceps,

1 pr. Scissors,

1 Brass Weighing Spoon,

1 Blow-pipe Anvii,

3351.
2424.
1486.
1494.

1704.
1705.
2938.
2935.
2940.
2925.
3455.
2303.
2928.
2308.

2298.
3080.
3149.
1344.

2447.
1356.

1 Blow-pipe Hammer,

4 large Bulb Tubes, Arsenic,
Clark’s,

4 Glass Flasks, 1 each, 2, 4, 6, 8 0z ,

4 doz. Hard Bohemian Test Tubes
for Reductions,

1 set Lipped Beakers, 1 to 5,

1 “ Beakers, 0 to 5,

2 Watch Glasses, 3 in.,

1 set Bohemian Glass Evapora-
tors, plain,

1755. 1 Watch Glass H’der, Hoffmann’s,

1756. 1 “< Mohr’s,

3269, 1 doz. Test Tubes, each 3and 5in. >

3269. 4 «-’ 3in, wide,

1749. 2 Wooden Test Tube Holders,

3227.1 Mahogany Test Tube Stand,
small, with Drying Pins,

1lnest of Test Tubes, in —
board box,

2002, 4, 5. 1 doz. Porcelain Digesters,

assorted,

3262. 4 doz. 1 oz. Test Glasses,

3164.4 “ Stirring Rods, ea.3 & 6in.,

2906.4 ‘“ Plain Straight Pipettes, 5

or 6 in.,

2907. 1 Bulb Pipette,

2969. 1 Bent Top,

3378. 4 1b. Glass Tubing,

2318. 1 Glass Funnel, ea. 14, 2, 24, 3in.,

2255. 1 Pack of Filters for each size,

3217. 1 Wood Funnel Holder,

2276.
3268.

1434,
1420,
3408.
2205.

3271.

OF CHEMICAL AND PHYSICAL APPARATUS. 229

APPARATUS.— Continued.
2251. 2 Porcelain Filter Rings, 3 arms, | 1885. 1 Porcelain Crucible, with Covers,

2246. 1 Filter Dryer, each 00, 0, 1, 2, 3,
3406. 8 oz. Wash Bottle, 1350. 1 Marsh’s Arsenic Apparatus,
3408. 3 Glass Covers, 3 in,, complete,
2924. 2 Porous Plates. 1356. 2 doz. Assorted Arsenic Tubes,
1 Small Collection of Test Metals, | 2233. 1 Evolution Flask and Delivery
2634. 1 doz. sheets Litmus Paper, each Tube,
Red and Blue, 3031. 1 Clark’s Retort,

3278. 2 White Glazed Porcelain Slabs, | 3033. 1 4 oz. Stoppered Retort,

2211.1 set Royal Berlin, Small, Eva-| 1542. 18 oz. Woulftt’s Bottle, fitted Rub-
porating Dishes, ber Corks.

2210. 4 ditto ditto, No. 6,

The following batiies: containing Chemicais, as below :
. 1524. Tinctures, 8 1-0z., 14 3-0z., 3 4-0z., | 1516. Salt-Mouths, 16 4-0z., 7 4-oz.

8-02.,
CHEMICALS.

4 oz. Acid Acetic, * 1 Piece Copper Foil, 3x3 1 OZ. Potass. Sulphocy’de,

2“ “ Tartaric, in., pure, 1 “¢ . Carbonate,

Bf? Oxalic, 4 02. Ferrous Sulphide, 1 ‘ ‘ Cyanide,

6 “ Barium Chloride, 8 e Sulphate, 1 “ Silver Amm’d, Sol.,

Pee Nitrate, 1 “ Indigo, 4 “ Ditto Nitrate, cryst.,

2 “ Cobalt Sol. “ 4 “Charcoal,Powdered, 1 “ Zine, Chloride,

4 “ Ammonia C’bonate, 4 “ Ferric Chloride, $lb. “ Pure, in Sticks,

a “ Chloride, 4 *“ Flux Black, | 4 oz. Potass. Ferrocy’de,

ae o Oxalate, 8 ‘‘ Lead Acetate, 2 * “ Ferridcy’ide,

AH ¢ Sulphide, 2 “ Mercury Chloride, 2 “ “ Hydrate,

6 “ Calcium, Chloride, 21b. Manganese, Oxide, 1 * © Todide,

1 Ib. - Sulphate, 40z, Platinum, Chloride, 4 “ ‘“ Nitrate,

1 oz. Copper Ammoniated Sol, 8 ‘ Sodium, Carbonate,

Sulphate, $ lb. Potass. Bichromate, 2 “ * Phosphate,

1 lb. Copper Sulphate, 202.“ Ferricyanide, 3 ‘ Tin, Chloride.

3517.—Apparatus, for Miners and Engineers. Price, $105.00

1Small Cheap Balance and Set) 2938. 2 ft. Lenn Blow-pipe Wire,
of Grain Weights. 2935. 1 sq. i Foil,
2439. 1 2-0z. Graduate, ; 2925. 2 Small Platinum Capsules,
1998. 1 Steel Crushing Mortar, 2305. 1 pr. ‘ _ Pointed Tongs,
2818. 1 2-in. Agate sh 3455, 1 yd. Copper Wire,
3827. 1 3-in. Porcelain Mixing Mortar, | 1701. 1 doz. Blocks Prep’ d Charcoal,
3125. 1 Steel Spatula, each 4 and 6 in., 1 Bottle Charcoal Powder, 16 0z.,
Be 2237. 1 Triangular File, in handle, 1. “ Rice Flour, 4 0z.,
; 2236. 1 Round . 2833. 1 Mould for Pastiles,
, 1 Half Round File, 3351. 1 Small Wire Triangle,
: 2599. 1 Glass Spirit Lamp, 30z., 3278. 2 5-in. Porcelain Plates,
: 2615. 1 yd. Wick for same, 3269. 1 doz. Narrow Test Tubes, 3 in.,
3080. 1 pr. Trimming Scissors, 3371.1 “ Small Specimen Tubes,
Be” 3321.1 ‘ Japanned Tongs, corked,
Bis 3234. 1 Iron Retort Stand, with3 Rings, | 2621. 1 Mag enifying Lens, in horn case,
FE 1885. 1 Porcelain Crucible, each 0 No. 1.| 3378. 1 1b. Glass Tubing 1 in. bore,
oe 2002, 2005. 8 Assorted Porcelain Di-| 3333. 1 pr. Cupel Tongs,
‘ gesters, 1356. 1 doz. Assorted Tubes, Liebig’s
: 1488.1 Berzelius’s Brass Blow-pipe, form,
‘ with extra Jet, 1432. 1 Set * ‘lipped Beakers,
4 2940. 1 Platinum Crucible, 4 0z., 1421, J “ of 6 ‘* 0 to 6, plain,
Bs 2604. 1 Plattner’s Blow-pipe, Lamp and_| 2276. 4 doz. *P lasks, assorted, 2 to 6 02.,
Stand, 3407. 2 Watch Glasses, 2 in.,
: 9 1344, 2446. 1 Anvil and Hammer, 1755. 1 Hoftman’s Glass Clamp,
& 3226, 1 pr. Blow-pipe Tongs, with Pla-| 2575. 1 Blow-pipe Knife,
BE tinum ends, 1690, 1 Small R. Berlin Casserole, No. l,
BS 3116. 1 Mixing Spoon, with Spatula, 1|1687.1 Semi “ No. 1,

224 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

APPARATUS.— Continued.

2233. 1 Evolution Flask, with Delivery
Tube,

3031. 1 Clark’s Retort,
3378. + lb, assorted Glass Tubing,
2322. 1 Glass Funnel, ea. 2, 24 & 3 in,
1864. 2 Glass Covers, each 3 and 4 in.,
2321. 1 Nest of German Funnels,
3216. 1 Small Funnel Holder,
2251. 2 Porcelain Filter Rings,
2255. 1 Pack. Cut Filters, 4, 5, 6 in.,

1 Wash Bottle, Berzelius’ s Form,

2906. 2 Plain Pipettes,
1 Hare’s Foot,
3226, 3271. 1 Test Tube Rack, fitted,
3274, 1 Wooden Test Tube Holder,
1575. 2 Test Tube Brushes, et
3267. 6 sheets Assorted Test Papers, « ~
1 Small Collection of Test Metals,
2210. 3Smallest size Royal Berlin Evap-
orating Dishes, 00, 0, },
3164. 5 doz 6-in, ‘Glass Stirrers,
3008. i Box Blow-pipe Reagents.

The Chemical Tests, to accompany the above Apparotus, will be packed to
order, according to the number of bottles required.

3518.—Apparatus, suitable to be dealt out to Students in Col-_
leges; each set nicely packed in dovetailed boxes, with sliding

covers.

2498. 1 Glass Spirit Lamp, 4 0z.,
2615. 4 yd. Wick, in paper box,
3233. 1 Small Retort Stand,

3351. 1 Iron Wire Triangle,

3066. 1 Sand Bath,

3414. 1 Porcelain Water Bath, 6 in.,
1484. 1 Jeweller’s Blow-pipe,

2935. 1 Small piece Blow-pipe Foil,

2938. 1 Piece 6-in. Wire,
1885. 1 Porcelain Crucible, each 1 and
13 in.,

3321. 1 pr. Japanned Crucible Tongs,
3125. 1 4-in. Spatula,

2827. 1 Porcelain Mortar, 23 in.,

1418. 1 Small Set Beaker Glasses, 0 to 4,
2221. 1 Nest Porcelain Evaporators,
2276. 2 4-0z. Flasks,

d019.

|

Price, $15.00
2278. 1 16 oz. Flask, Round Bottom,
3406. 1 Pint Wash Bottle,
3104. 4 Glass Slides,
3378. + Ib. Glass Tubing, 3 in bore,
2279. 1 Flask for Sulphur’d Hydrogen,
3408. 3 Watch Glasses, 2 in.,
3164. 2 Stirring Rods, 6 “
3226, 3371. 1 Test Tube Rack, filled,
3267. 6 Sheets, each kind, Test Papers,
3387. 1 ft. Rubber Tubing, 4 in.,
2318. 1 2-in. Bohemian Funnel,

2317. 1 American - 3. in.,
2255. 1 Pack Cut Filters, 5
sé . 5 “cc

2Q2937¢ 1 peak gular File,
2236. 1 Round

Apparatus, for performing most of the experiments

described in Stockhardt’s Chemistry. Price, $15.00

3033. 1 4-0z. Retort,

2276. 1 Flask, each 2, 4, 6 and 8 oz.,

1416. 1 Set of 4 small Beakers,

2281. 1 Flask, round bottom, each 4
and 6 0z.,

2498. 1 Small Spirit Lamp,

2615. 1 yu. Wick,

1483. 1 Biack’s Blow-pipe,

1502. 1 doz. ass’d 4-oz. Bottles, stop-
pered and corked,

2938, 2935. 1 Small piece of Platinum
Wire and Foil,

2829. 1 Porcelain Mortar, 00,

1644, 1 Cylinder,

3422. 1 ft. Wire Gauze,

3274. 1 Test Tube Holder,

3226, 3371. 1 Test Tube Rack, filled,

2331. 1 Funnel Tube,

1885. 1 Porcelain Crucible,

3262. 1 4-0z, Test Glass,

2322. 1 Funnel, 1} and 2 in.,
92°5.1 Pack Filter s, each 3 and 4 in.,.
3104. 6 Glass Slides,
2634. 1 doz. Blue Litmus Paper,
1 Piece Pure Zine,
3164, 2 Glass Stirrers, each 3 and 6in.,
2221. 1 Semi-Porcelain Evaporator,
shallow, 34 in.,
3029. 1 Glass Oxygen Retort, 2 bulbs,
6 02.,
2233. 1 Flask, with Deliv’y Tube, 16 0z,
1441. 1 Beehive Shelf,
2236. 1 Round File, with handle,
3378. + 1b. Assorted Glass Tubing,
3353. 1 Brass Tripod,
3147. 1 Iron Spoon,
3233. 1 Retort Stand, with 2 Rings,
3066. 1 Small Sand Bath, 4 in.,
1715. 1 Chloride of Caleium Tube,

1356. 3 Arsenic Tubes, ass’d.

The above apparatus can be enlarged at the pleasure of the purchaser. A
set of chemical substances, accompanying the above, will also be cb acemana tate

if desired, at reasonable rates,

ws ee! LT eee eee
ae t “a ¥

Ve Oe ee og Wad ee? ye

eae Oe ee ee, te

Of CHEMICAL AND PHYSICAL APPARATUS. 225

3520.—Apparatus, for Analysis of Urine, to accompany Man-

ual, by Dr. Austin Flint, Jr.

Price, $40.00

APPARATUS.

a 1 Urinometer, 6 0z.,

b 1 Thermometer, | 0z., graduated in
drachms,

_¢ Graduated Glasses, 1 drachm,

d 4 Conical Glasses, with Porcelain
Covers,

e Porcelain Evaporating Dishes and
Watch Glasses,

f Test Tube Stands, with Test Tubes,

g 3 Funnels and Filtering Paper,

h 3 Flasks and Wire Gauze,

¢ Bunsen’s Burner, Rubber Tubing,
etc., or Alcohol Lamp,

k Burette, graduated in grains,

l 200-Grain Measure,

m Tube, graduated in cubic inches,
with vessel in which it. can be
inverted,

n Rings and Clamp for Graduated
Tube,

o Stirring Rods and Drop Tubes,

p Swabs and Brushes, for cleaning,

q Platinum Spoon for Calcul,

r Blow-pipe,

- g Colored Papers, gummed for record-

ing the color of specimens.

CHEMICALS.— Case of Reagents containing :

] Nitric Acid,

2 Hydrochloric Acid,
3 Acetic ni ets
4 Nitros-Nitrie ‘

8 Sol. of Soda, Specific Gravity, 1°12,
9 Liquor, Potassa,

10 ‘* Ammonia,

11 Ether,

9 Nitrate of Silver, in solution, 9°58 | 12 Mercury,

grains in an ounce,

13 Solution of Hypochlorite Soda,

6 Sulphate of Copper, in ditto, 94°73 | 14 Ditto, Chloride of Sodium, sat’rat’d,

grains in an ounce,
7 Neutral Tartrate of Potash solut’n,
378°91 grains in an ounce,

15 Test Papers,
16 German Yeast.

EXTRA APPARATUS AND CHEMICALS.

a Hydrometer, of Baume’s, for Li-
quids heavier than Water,

b 1000-gr. 500-gr. and 100-gr. Specific
Gravity Bottles,

e¢ Water Bath,,

d ‘* Oven and Swedish Filters,

e 2 Wash Botties and 3 Precipitating
Glasses, .

1 Sesqui Chloride of Iron; 9°33 grs.
of Iron by Hydrogen dissolved
in Hydrochlorie with a little
Nitric Acid, evaporated to dry-
ness and dissolved in 6 fluid ozs.

f A Balance at least delicate enough
to turn with 5 of a grain,

g Graduated Solution of Chloride of
Barium, 36°6 grains, in six fluid
ozs. of Water, for Quantitative
Analysis for the Sulphates,

h 3 Separate Solutions for Quantita-
tive Analysis for Phosph’iec Acid.

2.400-grs. of Acetate of Soda, and

'800-grs. of Acetate Acid, in 6
fluid ozs. of Water.

3.12-grs. of Ferrocyanide of Potas-
sium, dissolved in 6 fluid ozs. of

of Water, Water.
3521.—Apparatus, for Assay.
Be OMRNY POIMNOG: NO. Ps). Tee Sls. ve Cb von cock cece awees couse $50.00 .
MR CRW se ee ao tla ieee ad cea c= 72.00
Bene BTA Ot iG ly eae ig Be Saco oe Sos cee se 72.00
1372. Ditto, ditto, ditto, with Apparatus for Rider.-........-...- 78.00
3417 to 3433. Weights, various prices.
3922. Basin for Washing Gold.............-.......--. Seah aes oe 1.50
eI SPOACOIW Sor ey oe Ske we ao 75 to F060
1486 to 1490. Assay. Blow-pipes..........--- ..2.-2-+.20.-.-.----. $2.00 to 4:00
1581. Assay Brushes, for cleaning Button......-.-......-......--- 50:
1712, Ditto, Chisels, for clipping Ingots. ,.-....-...--.2.---..2-.-- .50
Be Pepe APOIO OR Ses cad O OLS has aibe'esqc enc ds teh ces POF dOZ- ‘1,00
PRAGA EEE ROU: IRON SO sos Sis io ook eS on kee be r 2.50
1672, Ditto, ditto, French, Beaufay..-.-.......-.-. 02.22..2--2 02 05 to .08
Perera teee Rt COVOIR cae aks copa ur ie. sbccces ous o deeb. =. .60 t0..75

Pe APIW I CIBRE OVENS 5, oo, is nica ene OA Sy slacker es Co Utine es 00 to .75

226 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE.

APPARATUS.—Continued.

1882. Assay Crucibles, Plumbago..........-...--2-----22+e-2- ----$.20 to 1.63
1893. Ditto, ditto, Platinum 22.5 ..2.0.60. 502. ooo ct Per gramme. .40 to .45
1895, Ditto, ditto, Metallurgists.—.. -.. . cceecses aby cluescked sent "20
1996 to 1907. Ditto; ditto, Sands) yo oo Ne ee, ae
1908, Ditto; ditto; Ronstinig®.o.2 66 .. pea noe VS Woe aveieame y peea eae 75.
IWIt:--Ditto, ditto, Sapports:. 0 oe es Sain ke weed ee eens 60
TOD: Bolle AGH Caso os bo4 ck. . eee bases shoe Cen ebeee Per doz. .35 to 2.25
LVS, Cupel- Holdlera. iso 2s 0 Cais ge beak tad oe cea ees 1.00
a9UF. Ditto, Monlds 5 por ois en oa Sin ne make ba eee one gs Oa ae
CMOd ATON AN PVCS a6 0 Fs od eS a Sos ee eas Cae Lae .40 to .50
COS: Tit Dinneriisn oS be 8 Pahl ea ee eee .60 to .80
2016. Roasting’ Dishes. : 25.0. 04. ee pe he Ee Pe Or Oke 2b tO ae
2e2ly.: Evaperating: Dishes. 5024. Fos oc cue bactenes we Per set. 2.75
at Pee BAUS Pai ht | os eater eye RRR rR MEIER TOS Grad A. he 2.50
D996 28! Wilde i EA a ae i
Sold. Parting PIABKS. 65). PsbS Sea i ace eyneen Per doz. 1.50
Sata, POTS, ABBOT PAAR 8 a a ie aa D0
2296. Forceps, for crushing the Button. .-..... 2... -- 22-5222. eee 1.75
cane, Pumeces; KONG isos 8c oo. ote ut eee ae ero be eene tae 21.00
mao. Ditto; Cupelling yo: onc bio ced eacnce ee one a ekee eae ane aoe ee
want. Ditto, Hibb’s: Patent... 30 db. cckat ons eee sees eae 50.00
Sod. Ltt, Grin’ sas. 2, Coc Soe es eee eee So ee ata e aie 20.00
mao.” DAtLO, Chiston’s 2. 4 as wedienc «saw lS las orks bb ke een bee 40.00
SASS. FAM eee oo ha oh oa ee eco ee eked ee ee 1.00
WARS SINAOE bg oo Soho Walcca SoR Gs ap be Gs 6 vate ko Leen ae baa otal 1.75
hy DEED OE oa. Ses ait ea cee ane ee eee ea 2.50
Pash. MOG MOUIAN. «5. sein doen Sk aS he aos AE ak ota oe once eae bee
BESS. Tron | Mortars 40 oes 8s Cav oka ee oh Sak hb cs seek ee note 40 to 4,75
@ude. Ivory Scale; Harcourts .: 5. o'. So vaw aed « ccnswe keels aes ome uees 5.00
2621. Lenses or Glasses, Magnifying jo0'0.05 du. eset cwesonwaee ames 2.50
2026. Ditto, ditte, Stanhope’s ...3. fsck Sigs HS we wk vans ee ete 2.00 to 2.50
2688. Mineralogists’ Slates, for trying the Streak of Minerals..-..-. 40 to .50
2041-10: O847. Mamie... sss ee eas shudewedews see eeon 30 to 2.50
3008, 3009;. Reavent Cases 0250200005 Cub codec sees eye ee eee ee
o0ns; MOCODpG; for AMBAY cls. Cs a ven aky cnn maw eae een eee 1.50
won, Scormer Holders soc Se eck Ps cas ae eae eagerenes 1.50
2836. Ditto; Moulds ess oes ee Gee a a Whe hes ee ee
2086. Beorifying Mouliis oo eee eae eau as sas eee 1.09
3180. Stop-cocks of Silver, for: Assay... <5 22.0.0 lei fev eeewenes 30.00
2297. Tongs, for holding hot: Tubes... vc isin sd noes <cecdeacen eae eee 1.00
$319 46 S900. Ditto; Coal. ces es GG eee ae ee 1.00 to 1.75
3391 10 3328; Ditto; Crmethle. <2 sca eee 50 to 6.50
3303 10.3396; Ditto, Capelle, ys es ccc. cea aan Cae aoreee 1,50 to 2.75
Soar. Ditto, Sook ifier 5 oy eo. oe pelea ae eek a eae 1.25

Apparatus for General Use in Analysis: Spirit Lamps, Furnaces, Flasks,
Beakers, Test Glasses, Baths, Filtering Apparatus, Evaporating Basins, Re-

torts and Receivers, Hydrometers, Stills, Gas Bottles, and other Analytical
- Apparatus, will be found under their respective heads in this work.

3523.—Apparatus, for Assay before the Blow-pipe.

Lingke’s Freiburg complete set of Blow-pipe Apparatus, for
Qualitative and Quantitative Analysis,.in German silver, comprising
every article used in blow-piping, with reagents of the most choice
kind, put up in extra fine, close-stoppered bottles, each bottle coy-
ered with an extra rubber cap to preserve their purity, with accurate
Specific Gravity Balance, enclosed in a glass and mahogany case, and
each department packed in highly polished mahogany cases, and the
apparatus and reagents again enclosed in an elegant mahogany case,
with lock and key, and the whole apparatus and scales enveloped in
leather envelope straps and handles, for hand transportation. $275.00

Be gts Ack Fh Roa yc aa.
* iat 4 peek

OF CHEMICAL AND PHYSICAL APPARATUS. 227

3524.—Apparatus, the same as the foregoing, in Brass. $260.00

$525.—Ditto, Lingke’s, for Gold and Silver Assay. 200.00

The above are all manufactured to order, by Dr. Lingke, and
haye his stamp on, and are well known to be the most complete ap-
paratus of the kind to be found anywhere. The Balances are
very celebrated for their delicateness and accuracy.

OO aty or AAO rs ch Fok 9 46 Ss Soild e So 4s wae e Vice Chae Us $72.00 to $78.00
J482 to 1407. Blow-pipes, Various. 2. 2.2. co.cc es coc cee eek ee eee ee 50 to’ 12.00
2932. Ditto, Tips, Brass and Platinum.............-.-.-.-.------.- .10 to 1.50
RNS BDCC RIM ua he bs hea ie SS Loa beh pdb Me WSs woke Leeks el eee 20
TER BOA ATI IU0, ATIVVMS fov'osis vids dete ee Sete wee cutlass ose ea aee > 488: 10' 1,00
PE CEEMEOTY MAP OUMIRG 255 le Wee pli de Mey hine SOE i Wel ed eVe Se seed oe 50
Bea 4 BE ROU- CONG, fF: SUSIORR 6. 0) Soa. ao eke ewe Sad ie oe eS 50
Bet. BOWING CADRUIOB: V2 Js 5154. cps eee weedwecee woes Per doz. 1.25
BOLO. EMULO, GAO ooh en OS eb Sees Pisa kipebt sym: 6 ees ~s Each. eG 3
ee Me, SLO bs hd Ov od ees USS EN SE EES SOA a ee eles Per doz. 1.20
PT Gt INE kel Co hie ee dea Sakis sh op Slee eg eae bole A 1.75
1701. Charcoal, AVNGCER TON. bos ce eA eR Ee eho she eInE seks. .25
1702. Charcoal "Borers, Spatula Handles he AE OR UO SENS SNS aor nee 30 to .40
1703. Ditto, ditto, 4 points, CUOOR AIM HOR OU ia oe yo ee 50 to .75
1704. Ditto, ditto, 8 points, Pies WU eewapeuewaste ta weeba'ens s 1.00 to 1.25
Be Oh rool Hoietsr scot kee sees ee a dk se 2.75
BPOO taro BELO AWE Cot L Se Soe iegs nestle we cabe'se at ucs~ecee .50 to .75
ee ea REA oe akc uw as nips oped acca y desu n 6 paehe sce wee 50
Ceaat Ret LEE fo ico cee ap nweehstchh a orcmaded ives ©. 60 .50 to .60
Ea atte: ONE od op Ol ian te ike wk aude Peeadb ae eede loco, .75 to 1.25
Peta t DINGIA TOU CHDPING INGO oasis a lds e se deg ess lee sede ects 50
Me Mot AUN GOES, oa evil sp conn ae anineeatcameieban ae ccee tse. 25
Se UGE R ica alos eat bak ce sce ead Win weckaws bodeUetwedes us 2.50
SE PO eg Ue ee LU eyed bes Wes SeUawiirice ewe do cAhe 15.00
1870. Covers of Glass for covering Choice Specimens......-.-...-- .50 to .75
3527. Crucibles, Iron, with Cover.
1919. Cupels, GORE Mati oye Cl euah wero cdl che eames Per doz. .35 to 3.25
Bone Ash, for Cupels, according to quality. See Chemicals.. .30 to .70
1920. Cupel Wienges a a 1.00
2941. Cutting Pliers..---.....--1. see eno. eens eee eee eee eee 1.25
ee Pee OBES SS So ck eda ee cee Eye Per doz. .60
aE TO atl. DCEO, F OFOGUE. 24 Vows scale cece lhl eine ose cee sees 22010 2.50
3028. Funnel Holders, PAORENOE Oe. Gu k oqcine casts dove as sos yo9'o bs © 25

1346. Hammers, French, with two ends, one flat for crushing, and
one round end for pulverizing, with round anvil, having
one side flat for crushing, and the other side with concave
center for pulverizing, and provided with a brass circular
cap to retain the powder in the mortar, finely finished, with

German silver tip to the handle...... 2... .....22.2....-- 10.00

BR Be IE God ow ite Fae ele tee eects ie Rel gu ss Saabiain'e 5 75

2447. Ditto, Freiburg. .. 2.2. ences eens ewece owen eeee Paw eere bus 1.00
2448, 749. Marhinede 67s eos ce ak 4 Re dw Shea pe ke a diate eee « 1.00 to 1.25

2451 to 2453. Pe Go Fie Caeiri so 6 Wns Mag Awad bNa eed mane need 1.75 to 2.50

3529. Hare’s Foot Sevem Ped OWA Se Mids wala) sciha's C50 Sn dea een sie o'eGs ages 10

2457. Holders for Platinum, Siders We NU ae .60

pe eR BA UIOE i oho si oka 5 65 olde 6 oa en tw aes Swieek we once been 75

2.76. Ditto, for Glass WN eee hitaud sop bce ng sndah a aekes as Sa ae 50

IAG A SARREROY Wie bt enw Xue bowl adeih ae aia does ibe os pew e ee 3.00

2596 to 2601. Spirit Lamps..--.. --. 2+. 22. +s. 2-2 eee ee eee eee 50 to 1.00

IO PROMI OR oe Cano soca bie e cet eh seme s eA eens ween con's 50

SE CO SOON es Ce hit pas eeN antes sy od dandy sss 100 to 3.50

Ne RENE 15 5 aso N Syl ESE wid adits 3% 5 sieihiy Kieie es see eae Sean 1.00
2688. Mineralogist’s Slates, for trying the Streak of Minerals. --.--. 40 to .5U

2690. Mixers, or Mixing Capsules, brass..........-...---..-------- 50 to 1.00

2691. Ditto, ditto, Ns ON aS yaya nate ces gd cece Sass aes 25

+

i

228 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

APPARATUS.— Continued. ;
2516. Mortara, Avate. 25.25. 255 6: ae bcm ee ee ee eae $1.90 to 30.00

1998, ’99. Ditto, Diamond, Of steel... s 5 iene oes a, Geis 5.00 to 7 50
2822. Ditto, Pron ee pe ee ie
2831. Ditto, Steel, high] y polished Lu snwl cel cup wee Or ese 2.00 to 5.00:
2832. Moulds, Boxwood, for Cartridge. Cases... 206 Sateen .20
1909. Ditto, ditto, for Charcoal BQBEN8 50 5 cme ee sh wale ee wae ee ee 75
1910. Ditto, Brass, for Clay Crucibles.. soi. cic eee ween teas 4.25
1921. Ditto, ditto, for making ‘Cupels...s.. ¢. cscck be 3s ok pee coe 2 BO b0 Oe
2836. Ditto, ditto, ditto, Svorifier .: 22-520 530 ccc aes oe ROO BD
2838. Ditto, iron; for Gold and Silver Bars.-..... 2.2. 2.22505 s22-e- 1.50 to 2.50
1922. Ditto, Steel, for Cupels, with Supports......--.. ...2..02... 2.70
2837. Ditto, Wood, for forming Charcoal pieces, oblong. ...-.-..---- 1.25
3530. Ditto, ditto, ditto, ditto, blocks, square.
2513. Mouth-Piéees of Borns oiS5 252 54 ete pee ee a eee ee 25°
26814. Ditto, ditto; Ivory 3.2 ct eo ci en a Saas D0
1580. Pencils, Camels’ Hair, for taking up fine dust from the Bal-
BliCe Pan! Ol ss oo5o Ss Peta cleo eeu ou eens 20
Platinum Feil and Wire -. 2-2 see cs yas ee Per grain. 02}
3008. Reagent Cases, with turned Caps, small........-:-..-2...2.2- 2.50
3009. Ditto, ditto, with space for Blow-pipe, Forceps and Platinum
TOK Os os cies PARC E SRS bees Me eae a tas ee eee een 4.00:
S111;/12;' Reagent Cheste sc o6e G56 Ss oie nee nae ae ee 10.00 to 12.00
3046. Roasts, Plattner’s.- wie apc ikn tig 5 Sn mer Shae 2.00:
2658. Scales, Harcourt’s , for “Measuring the Butten:2.. 2000. ea 5.00-
3080. ‘Soikeura + 6o vor OU ches eae a oe ee aa pee oaks ba .00 to 1.00
S009, SieVes; Box, Griffin’ 855. Sieh we vein heehee 2 cA wed eie dae 2.50:
3100, Ditta, Plattners, Brass >i. 45 ay opens chee sb Cand ena we eens 50°
3117, Spatulas, Horn: /.2.. 42452555 Aun ekes Scene eee ae Shee Sees .10 to .40
$124, Ditto, Steel, smalls. . 26 specs ee ee see esa see v anne daeeam ee 40
3154, 755. Spoons, Wo dc concep ee eae ee 15 to .50°

3147. Ditto, Iron, small and large.
3113. Ditto, Ivory, Plattner’s, small and large.
2928. Ditto, Platinum.

SOT. 2 O6b PAROS Si 055 ea ee ba tease ne eee ee ehee etn Per sheet. 05
SET TE PO Oe as pen Cac bow obo aime eee irs Per square ft- 15
S249. ‘Triangles, Plattner's : ios. <s0 sy < 26s enna n eae tienes ae Cen 29
1357. Tubes, Bulbs, for dubliming 2 220060 ae en Oe. 7D
3417 to 3433. Weights, various prices.

3455. Wire, Copper. Wem eb cc an bbs beanies Cebee seo paaaeee Ib. 2.00

Files, Flasks, Funnels, and other Apparatus. See appropriate apparatus
under their respective heads.

3531.—Set of Instruments, for Blow-pipe Analysis. $45.00

1 Brass Blow-pipe, with 2 Platinum | 1 Bar Magnet,
Tips, 1 Magnifying Glass, with 2 Lenses,
1 Ditto, Blow-pipe Lamp, 1 Alcohol Lamp, with Brass Cover,
1 Stand for Evaporating Dish, Trian- 2 Ivory Spoons,
gles, etc., 1 Charcoal Saw,
- 1 Funnel Holder and Chimney, 1 Mattrass Holder,
1 Platinum Pointed Forceps, 1 Knife,
1 Brass Forceps, 1 Assay Button Brush,
1 Steel Forceps, for Lamp, 2 Mixing Capsules, 1 brass, 1 horn,
1 Pair Cutting Nippers, 1 Steel Mixing Spatula,
1 * Flat Forceps, 2 Brushes,
1 Platinum Wire Holder, with 6 Wires, | 1 Box for Soda Papers,
1 Hammer, 1 Wooden Form for Paper Cylinders,
1 Anvil, ; yd. Lamp Wick,
1 Steel Mortar, 1 Cupel Holder, with 2 Cupel Cups
1 Agate ditto, 24 in. in diameter, and 1 Mould,
1 Charcoal Borer, club-shaped, 1 Charcoal Holder, with Platinum
1 “a four-cornered, — Ring and Screw,
1 vf with Spatula, 1 Test Lead Measure,

é .
a
4
*
;
«
Bh
ss
:

eo

OF CHEMICAL AND PHYSICAL APPARATUS. 229

APPARATUS.— Continued.

1 Box for Clay Crucibles, | 12 Bottles with Glass Stoppers, flat,
1 pair Lamp Scissors, 1 Charcoal Holder Stand,
1 Wash Bottle, L Coal Tray,
1 Dropping Bottle, 1 Dirt *
3 Porcelain Dishes, 3 sizes, 1 Clay Cylinder,
2 “ Cups, for Gold Assay, 2 Iron Rings,
2 Watch Glasses, 1 Hare’s Foot.

6 Wooden Boxes, for Reagents,

3532.—Set of Apparatus, for Quantitative Blow-pipe Use.
; $15.00
1 pair Flat Pincers, 1 Charcoal Holder, with Platinum
1 Assay Button Brush, Ring and Screw,
2 Mixing Capsules, 1 Brass, 1 Horn, 2 Ivory Spoons,
1 Cupel Stand, with 2 Cupel Cupsand | 2 Porcelain Cups, for Gold Assay,

1 Mould, 1 Box for Clay Crucibles,
1 Charcoal Borer, club-shaped, 1 yd. Lamp Wick,
1 " * four-cornered, 1 Steel Mortar,
1 a - with Spatula, 1 Knife,
2 Brushes, 1 large, 1 small, 1 pair Lamp Scissors,
1 Box for Soda Papers, 1 Wash Bottle,

1 Wooden Form for Paper Cylinders, | 12 Glass Bottles, with Flat Stoppers.
1 Test Lead Measure,

3533.—Apparatus, for illustrating Hinrich’s Elements of
Physics.

For exclusive use in the Lectures (see School Laboratory, 1871, p. 66), the
teacher should procure as much as possible of the larger apparatus and finer
specimens of crystals, minerals, etc., mentioned in the work. No general direc-
tions can here be given; the wants and means of the school will have to be
consulted in making out the order. The teacher ought, however, always to
give the precedence to the apparatus to be used by the students in the Labor-
atory Practice, if the means of the school do not permit the purchase of this
necessary apparatus and the more costly apparatus also This simple appar-
atus required for the demonstration of the Fundamental Laws of Electricity
(see 341 to 372), is more important to the student, and therefore to the school,
than the more expensive and more powerful aachines (373 to 380) ; that is, the
simple apparatus for students’ experiments must be obtained first; the fine
electrical machines and batteries should thereafter be procured as soon as pos-
sible. The necessary apparatus for Student’s Laboratory Practice is divided
into two distinct groups, viz.: I. Apparatus placed at convenient points in
the Laboratory, to be used by students in general; II. Sets of Apparatus, put
up in a separate tray, of wood or pasteboard, sufficient to demonstrate any
given article in the book. (See article 492 in the Elements of Physics.)

Every piece of apparatus should be labeled. (See El. Phys , 495-96.) Be-
low, the principal fixed apparatus for general use is enumerated. A few sets
for the demonstration of separate articles have been added, simply to serve as
examples. A full enumeration of all the sets required would demand too
much space.

J.—APPARATUS FOR GENERAL USE.

7. Meter Rods, of wood or brass, sev- | 11. Graduated Cylinders, several, viz:
eral, labeled No. 1, No. 2, ete. 100 e.c. divided to 1.0 ¢.c.
Decimeter Rules, of card paper or 50 * Ces '
brass; a great number; to be LO’ i: “Sea
distributed with the sets (see Of the last a considerable number
ea also called Centimeter is required for the several sets
cale ‘
Meter Tape, 10 meters long. 15-21. Balances and Weights:
10. A Twenty-five Cubic Centimeter a Druggists’ Counter Scales—set,
Flask. of Weights 0.1 gr. to 1000 grms.,
A 100 ditto. mainly for work in Chapter II.

230

E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

APPARATUS FOR HINRICH’S PHYSICS.—Confinued.

b Druggists’ Prescription Scales—
set otf Weights 0.1 to 50 grms.

e Ditto, with Weights 0.01 to 50
grms.; with Equipoise for one
scale-pan, for use as Hydrostatic
Balance. See 123.

(Larger Laboratories require sev-
eral of each of these three bal-
ances. )

Protractors, brass, horn; a con-
siderable number, both for sets
in § vi, Chap. III,and § iv Chap.
I

30.

36. Goniometers; a considerable num-
ber, for sets in § vi, Chap. III.
7. A Good Pendulum Clock.

38. A Simple Second Pendulum; me-
tallic bob and double iron wire.
(School Lab., 1871, plate 3, fig.
6, upper pendulum. )

Barometer Scale, English inches,
to 0.0L inch. Convert to mm.,
by Table, p. 167.

431.

136. Aspirator. ; :

148. Mortars, of Porcelain and Agate.

259. Astronomical Telescopes, Achro-~
matic.

a Common, power 5 to 10.

b* Larger, mounted (best equa-
torially), power 16 to 64 ; objec-
tive 6 to 10 cm. diameter,

277. Opera Glass,

281 Microscopes.

a Common, imported, cost about
$20.00.
b* Large, bulbs, more powerful.

286. Micrometer, on glass, | mm., in
50 parts.

288*. Microscope, with Polarizing Ap-
paratus, for observation of mi-
croscopic crystals (290).

301. Horse-shoe Magnet, strong, with
Keeper. :

323. Lodestone, in box, with iron fil-
ings and nails.

327. Compass.

I].—SEPARATE SETS.
Each set, as far as possible, put up in a separate tray; all pieces labeled.

(See article 495).

12. Volume of One Drop of Water—
1. Tube Pipette; 2. Graduated
Cylinder, 10 ¢.c. to 0.1; 3. Bot-
tle for Distilled Water.

13. Test Graduated Cylinder—1.
Graduated Cylinder, 10 c.c. to
0.1; 2. A One-cubie Centimeter
Pipette; 3. Bottle for Water.

14. Mensnration of Volume of Ves-
sels—1. Graduated Cylinder, 50
c.c. to 0.5; 2-3. Two Test Tubes;
4. Beaker; 5. Flask ; 6. Porce-
lain Dish; 7. Centimeter Scale.

24. Determine Weight of U. 8S. Coins
—l. Half Dollar; 2. Quarter
Dollar; 3. Dime; 4. Five Cents,
Nickel; 5. One Cent, Copper.

As 24b, c, ete., similar Lots of
Foreign Coin may be put up
separately.

28. Specific Gravity of Rectangular
Solids—1. Tablet of Wood ;
2. Prism of Wood; 3. Rec-

tangular Block of Cork; 4. Rec-
tangular Piece of Lead; 5.
Sandstone; 6. Limestone; 7,
Centimeter Scale.

29. Specific Gravity of Liqnids—t1.
Graduated Cylinder, 10 ¢.c. to
0.1; Bottles contain’g : 2.Water ;
3. Alcohol; 4. Gasolene.

30a. Specific Gravity of Solids Insolu-
ble in Water—1. Graduated Cyl-
inder; 2. Bottle with Water;
Specimen Tubes with Fragments
of, 3. Galenite ; 4. Gypsum;
5. Iron (nails); 6. Lead (shot) ;
7. Sulphur; 8. Anthracite.

306. Specific Gravity of Solids Solu-
ble in Water—l. Graduated
Cylinder; 2. Bottle with Gaso-
lene; Specimen Tubes with:
3. Crystals of Nitre; 4. Crys-
tals of Blue Vitriol: 5. Crystals
of Alum.

3534.—Set of Apparatus, Quantitative, to he aeait out to
each Student, as recommended by the School of Mines, Columbia

College, New York City.
2 Bunsen’s Burners,
2 Rubber Tubes for ditto, 2 ft. each,
2 Iron Ring Stands,
4 Filter Stands,
1 Test Tuhe Rack,
12 Test Tubes, 4 in.,
12 sc 6 “cc

2 Test Tubes, 7 in.,

1 ““ 8 “ce

1 Nest of 6 Beakers, plain,
3 “ “ee “ lipped,
3 Funnels, 14 in.,

5 “ 23 “

2 “c 3h “c

Mer een ee

aS

Oa

OF CHEMICAL AND PHYSICAL APPARATUS. 231

STUDENTS’ QUANTITATIVE

1 Funnel, 4 in.,
1 ha 5

1 Wasb Bottle, pint,
1

8 0z.,
1 4 0z.,
3 Convex Covers, 3 in.,
. se 4

sé
e

“cc Fe. 66

6é

3

3 Ground Glass Covers, 3 in.,
3 i 4

3

“eé oe “cc 5 ‘“c

6 Watch Glasses,

2 Chloride of Calcium Tubes,

1 Flask, | oz , for Carbonic Acid,
1 doz. Specimen Tubes, 3 in.,

2 Dessicators,

2 Glass Tubes,

2 Glass Rods,

3 Porcelain Crucibles, 1ti in.,

2 mA ° 1

1 Nest of 6 Evaporating Dishes,
2 Casservles, 4 In.,

1 Porcelain Mortar, 44 in.,

1 Blow-pipe,

2 ft. Platinum Wire,

2 Platinum Foils,

APPARATUS.— Continued.

1 File, '

2 Steel Forceps,

1 oz. Bichloride of Platinum, Solu-
tion,

6 “ Nitrate of Silver,

2 Bottles for ditto,

2 As corked, 10 OZ,
2 8

9 “ “é 4 6c
2 sé ““ 1 cc

2 Sand Baths,

4 Wire Triangles,

2 Towels,

1 Scissors,

1 Test Tube Brush,

1 Horn Spatula, 4 in.,

1 Package Cut Filters, 3 in.,
66 “é 4 6c

oP oe

Sheets Swedish Paper,
1 “§ Glazed ‘?

] Set Filter Patterns.

1 ft Rubber Tubing, 4%; in.,
2 Pieces Wire Gauze,

1 Copper Water Bath,

1 Rat-Tail File,

1 Watch Glass Clip.

3535.—Set of Apparatus, Qualitative, to be dealt out to each
Student as recommended by the School of Mines, Columbia Col-

Jege, New York.

1 Bunsen’s Burner,
1 Rubber Tube for ditto, 2 feet,
1 Iron Ring Stand,
2 Filter Stands,
2 Test Tube Racks,
24 Test ‘Tubes, ‘ in. iy

24 54
9 és : ‘6
1 66 3 «

1 Nest of 6 Beakers, plain,

2 Funnels, 14 i in.,

2 Me 23

1 Wash Bottle, ek

6 Watch Glasses,

1 Flask, 4 0z.,

2 Glass Tubes,

1 Glass Rod,

2 Porcelain Crucibles, 44 its,
2 bs “6 }B «6
1 Nest of 6 Evaporating Dishes,
1 Porcelain Mortar, 44 in.,

$24.00

1 Blow-pipe,

1 Foot Platinum Wire,

1 Platinum Foil,

1 File,

1 Steel Forceps,

1 oz. Bichloride of Platinum, Solut’n,
6 ‘ Nitrate of Silver,

2 Bottles for ditio.

ei et. COT ked, 1.02.,

2 Sand Baths,

2 Wire Triangles,

1 Towel,

1 Scissors,

1 Test Tnbe Brush,

1 Horn Spatula, 4 in.,

2 Packages Cut Filters, 3 in.,
2

{| Foot Rubber Tubing, 4 76 1D.,
1 Piece Wire Gauze,

1 Deflagrating Cup,

1 Blue Glass,

232 E. B. BENJAMIN'S DESCRIPTIVE CATALOGUE

HOFFMAN’S APPARATUS.

ad w S

3936 3537 3538 3939 3540 3541° 3542 3543

Apparatus which may be Used to Ilustrate Hoffman's Modern
Chemistry. Most of these Forms are constantly on hand, and
all the Joints are carotany. sealed and Stop-cocks ground in
the most careful manner

3536. Hojffman’s Glass U Tubes, 16 inches (a), with plain bent

Tube sealed in below...--- eo
$537. Ditto, ditto, ites, ditto, 16 inches (b), with Platinum Electrodes
sealed into the top of one of the T lighs So ae ee ee $1.25
$538. Ditto, ditto, ditto, ditto, 16 inches (c), with plain bent and inlet-
BOO i a a ee reee - $1.00
3539. Ditto, ‘ditto, ‘ditto, ‘ditto, “16 “inches. (d), with Pla-
tinum Electrodes sealed into the ‘top of one of the Limbs.
$1 50
3540. Ditto, ditto, ditto, ditto, 16 inches (a), with deliy-
ery-cock at the base of one ‘of the ETLURE An ne cocaek $2.00

3541. Ditto, ditto, ditto, ditto, 16 inches (b), with deliy-

trodes sealed into one of the Limbs........--.-..---- $2.50
3542. Ditto, ditto, ditto, ditto, 16 inches (c), with glass
outlet-cock and waste- cock at the top of one of the Limbs
$3.00

3044

3543. Di tto, ditto, ditto, ditto, 16 inches (d), with glass outlet-cock and
waste-cock at the top ot one of the Limbs, and Platinum Electrodes sealed
into one of the Lambsnk 2 Les a a ee eae $4 00

3544. Hoffman’s Lecture Endiometer, mounted on stand, com-
plete as ee SA a ph ea ae ee ela $15.00

he g ———

ery-cock at the base of one of the Tubes, and Platinum Elec- |

OF CHEMICAL AND PHYSICAL APPARATUS. 233

HOFFMAN’S APPARATUS.—Continued.
3545. Hoffman’s Apparatus, for Recomposition of
Water, consisting of three EKudiometers, mounted on stand,
each provided with a Delivery Cockof glass, and two ofthem
with cocks in. the top 3.0. .0.02.. 20.2. Sa Pa esteraetn ee #15 00
3546. Ditto, ditto, for the Decomposition of Hydro-
chloric Acid in Hydrogen and Chlorine: of Water int» Hy-
drogen and Oxygen, and of Ammonia into Hydrogen and

3950 3556
Nitrogen, consisting of a V-shaped Tube, with Platinum Electrodes, mounted
GRR ee ee era ig pe nie ia g Gene ge Ss ae ns ~o0 ee $6.00
3547. Ditto, ditto, ditto, ditto, unmounted ..........-2-2-..-2-------- 2.50

3548. Ditto, ditto, for the Illustration that the Gas evolved from Hydro-
chloric Acid by the Electric Current contains equal volumes of Chlorine and
Hydrozen, unmounted ........-.-..- NP a yo i OAD pink ak RG See .. - $3.00

3949. Appuratus, for Demonstration of Oxygen, Hydrogen aud Water,
consisting otf U Tube, mounted on stand, supplied with Stop-cock Delivery

Cock and.Glass Worm; complete . 2... ... 22.2. -..2.--- 2-2 22-. Bicrees $15.00
3550. Ditto, for ascertaining the exact proportions of Hydrogen and Ni-
trogen in Ammonia, unmounted..-. 6s... ee ; Frere bles Jy ss ae
3551. Metallic Supports for the above, and other similar apparatus,
MRR tre py es ees en a ee Pot ee ero giy te Wiis aoe Ss aden oe $4.00

3552. Hoffman’s Apparatus, for the Demonstration of Proportion,
ate volumes of Water, Hydrochloric Acid and Ammonia, consisting of U Tube
with Stop-cocks at top, Pinch-cock at bottom, with Platina Electrodes, monnt-
er GMI ANOs ORS. Cs adi coe ds Sea wae ods do Sous ow Dawes aoe conse s £10.69
2993. Ditto, ditto, for the Determiuation of Chlorine Water, consisting of
U Tube, with fine ground glass Stopper at the top, and having also Platinum
Electrodes on arm, No. 259, mounted Sr tarslag es ean oar ECL noe $7.00

3354. Ditto, ditto, for the Testing of Sulphnrie Acid, consisting of a long
glass vessel or bottle, into the neck of which is ground stoppered with fine
emery, a Glass Tube running about half way down the bottle, and bent at
right angles at the top. Out of the shoulder of this bottle projects a Tube,
having two fine ground glass Stop-cocks, with a bulb between them; the
whole 1s firmly fixed by a cork into a strong cylindrical glass receptacle, hay-
ing a flat bottom ; 20.5 25 Feo 37.50

3955. Ditto, ditto, Four Burners, mounted on one stand, each Burner
yg en ONG ERS, is aaa ae ere ie va a TR PSO RIN $7.50

1755. Hoffman’s Watch.Glass Clamps, each..-..:....-.....-.-..5-.---- .20

3956. Hoffman’s Apparatus, for the Decomposition of Water, con-
sisting of three Way Tubes, with two glass Stop-cocks for delivery and one
large bulb in the Supply Tube, with Platinum Electrodes sealed in and com-

-municating with the strips of Platinum Foil, unmounted.....---..---- $6 50

3957. Ditto, ditto, ditto, mounted ....... Roos wets wpm eas $10.00
3558. Ditto, ditto, with Charcoal Points for tie Electrolysis of Hydro-
chloric Acid and Ammonia, mounted ..... 2.5. ..-... .-.-6.-----.--- ~~ $15.00

234 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE.

HOFFMAN’S APPARATUS.—Continued.

im amt fem

3559

3559. Apparatus, for Volumetric Electrolysis of Carbonic Acid Gas, Wa-
terand Ammonia, through one Electric current, consisting of two Three Way
Tubes with two glass Stop-cocks with Carbon Electrodes and one Three Way
Water Decomposing Apparatus, each separately mounted, with special Bind-
ing Screws. All the above having largeglass Bulbs........----. ---- $30.00

3560. Ditto, ditto, for the Arrangement of Combustion Experiments, con-
sisting of a large glass Tube drawn at the upper end and bent at right angles,
into which is secured a glass Stop-cock, connecting with a rubber Tube deliv-
ery into the lower or open end is fitted, by means of a rubber stopper, a tube
or medium width, into which is secured a glass Stop-cock tube with a burner
of Platinum Foil iu the end. There is also a blowing tube, bent at right an-
gles, titted into the same rubber stopper.........---. ----+---++- +++: $10.00

3561. Hojffman’s Apparatus, for showing the principle of Carré’s Ice
Freezer, by producing ice from water by the employment of Ammonia.$15.00

3562. Ditto ditto, for the condensation of the Elementary Gases, Hydrogen
and Oxygen, in water, at boiling temperature, as well as for EFudiometric An-
alysis of the Fire Damp and the oil forming gases (as per Hoffman’s Modern _
Chemistry, Fourth Edition ; also per Records of the German Chemical Society,
2d Vol., p. 245), consisting of an Iron Stand with Toothed Bar, in which is
secured a long glass tube, supplied with Platinum Electrodes, and fastened
in a brass support, which can be easily inoved up and down..... ...- $30.00

3563, Ditto, ditto, for burning Sulphur by the Electric Current, demon-
strating equal vyolu es of Oxygen and Carbonic Acid Gas, also Sulphurous
Acid formed from it; consisting of an U shaped tube, with a large bulb near
the top, which is stoppered with a two-holed cork, and provided with a Waste-
cock. In each hole in the cork is a wire fastened, one of which is provided
with asmall spoon to receive Carbon, or Sulphur The upper ends of the
wire are supplied with Binding Screws. (See illustration, p. 236.)..---. $12.50

3564. Ditto, ditto, to observe the ratio of volume of Simple and Com-
pound Gases under the influence of pressure and changes in the temperature
(Per Hoffinan’s introduction to his work on Modern Chemistry, and Records
of the German Chemical Society, 2d Vol, p. 257), consisting of a long U
formed glass tube, ending in four vertical branch tubes in the shape on a fork
and supplied with glass cocks. ‘The apparatus is carefully held in place by @
nicely constructed support, which sustains four glass cylinders, fastened in

=k? ee

oe
yi
i
ee
ee);
Wag
Bef.
A
E
¥ ;
Sy
’
“f
ne

OF CHEMICAL AND PHZSICAL APPARATUS. 235

HOFFMAN’S APPARATUS.—Continued.

place with metal spring caps, which envelope each branch tube. These caps
are so arranged that they may be connected with a Steam-boiler by means of

OUR Os ark tO ss ene deen Soya did bare ce ok haw cee epee eine e's $50.00
( S uae
LT
|

i ]
tt iu hs
}O Wai Te ity

ie |

|

i
oe

aa

|

E ini
4

S20,

rT

com

i
ein :

=

3562 3564

3565. Hojffman’s Steam-Tight Determination Appuratus,
consisting of a Barometer Tube, 1 Meter long, graduated in } Centimeters, and
secured with a middle sized cork into a middling wide encasing tube. The
latter is drawn small at the top, in a right angle, which terminates in a boil-
ing vessel, supportedo n an iron stand, over a lamp flame of 3 tubes. Out of
the lower ens of the encasing tube runs a tnbe connecting with a condensing
tub. The graduated tube descends into a Mercury trough, out of which also

runs a measuring tube, graduated by a “ Nonius” graduating screw, showing
the volume by the pressure of the quicksilver.

3566. Murrle ’s Distilling Apparatus. (Se Ill., p. 237.) For either
Chemical Laboratories, Polytechnic Schools or Provisional Assay offices. Com-

236 E..B. BENJAMIN’S DESCRIPTIVE CATALOGUE

Hoffman’s Steam-Tight Determination Apparatus.

| f ha _=
oo “ty, =

3565
MURRLE’S DISTILLING APPARATUS.—Continued.

plete, ready to set into brick. The condensation of steam takes place in the cool-
ing tub, generally ; a large Sand Bath accompanies the apparatus, which can
be heated at the same time and with the same fire in the hearth, in which
case the cooling tub must be placed elsewhere. The length of this apparatus
is 64 feet, depth 3 feet. The separate parts of this apparatus are: 1 Copper
Steam-boiler, tinned inside ; 1 Cooling Tub with cover and level tubes; 1 Fill-
ing Funnel; 2 large Caps with ball Stop-cocks; 5 small ditto; 1 Tin Ali-
mentary Feeding ‘Tube; Glass Water Gauge; Copper tinned Steam Drying
Box, with 15 compartments; 1 Steam-pipe, running from the Steam-boiler
to the Drying Box ; 1 ditto, to the Cooling Tub from the Drying Box; 1 Wind-
ing Tube ; Detaining Pins; Filtering Funnel, with Binding Tubes; 3 Interme-
diary Stop-cocks cn the Steampipe; 3 Dogshead Stop-cocks for the Steam-
boiler; Drying Case; Cooling Tub; Steam-boiler Plate (2 entire); Pedestal
for the Cooler; Board for the Drying Case; 2 Props for ditto; Fish-bellied
Roast, etc., ete.

OF CHEMICAL AND PHYSICAL APPARATUS. 237

MURRLE’S DISTILLING APPARATUS. imported only
to order. (For description, see pp. 235, °36.)

UMMM TUITE mn TALDOSTUONO REV AETES/Y LUTE gS
Re PDOETRIOESCE TEE EECA Mn

ON

ACT it

PREEERER

om
Aare OT ==
a)

1
|
|

l

me

t

BS

Sa Ss sssSsY)HHH)H]HH)dHJ}>}THS}SJ)JFJSJ>J?)>)H]})})H}FSYSJ)}SHSHSYSY};;HS+H}SSS!T|
MMMM MMMM TT ee |
Po ee ee ee ee ee ee Te

Loree ee ee ee ae ee
TT ES HT
Pe eee ee ee ee ee TT

HH ee ee TTT Tt

tt ee TTT

Pe eee eee ee ee TT TT
ee TT TTT TTT
HH UNNI A

Hii HULNATAET At RAHA

HA LT TT TTT
i

3566

$567. Distilling Apparatus, with Adjuncts, according to Dr. Mohr,
consisting of: 1 Distilling Alembic of 2 gals.; Water Jacket, Steam-pipe,
Neck; Angular Condensing Tubes; Steam-pipe, with Transverse Stop-cock ;
Condenser for distilling water; large and small Detaining Pins; Alimentary
Feeding Pipes; 2 Apparatus Boxes of 24 oz.; 1 ditto, of 12 0z.; 1 ditto, of
Emilian shape, of 24 0z.; 2 Faucets; Steam-pipe, with Intermediary Stop-
A . cocks from the Cap into the Steam-pipe which

conducts the distilled water into the Cooler;
Casseroles, with cover, 34 qts.; ditto, of Emi-
lian, of 2 qts.; 2 Intermediary Stop-cocks; 2
Dogshead Stop-cocks on the Steam-boiler and

Re i
ee

A

|

i

|

i
| , |}
| ‘nabaeit
f imme
a:

‘ay TT

|
q

3967

Cooling Tube; 1 little Stop-cock on the Cap; Brass Connectors, hermetically
sealed on the Apparatus, Tubes and Faucets; Copper Steam-boiler of 30 qts. ;
Cooling Tub of 125 qts.; 2level Tubes with Funnel; Glass Water Gauge ;
Cap of one of the Evaporating Dishes; Front Plate ;Covering Plate ; Side
nae ; ai reas cas Roast; Iron Steam-boiler Plate; Lit-
g Plates on the Cap; Wooden Pedestal; Knob, Feet and Bindi

Crank Hands ; Brush, Plaster Model, etc. saamalier

238 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE

3568. Distilling Apparatus, Dr. Mohr’s, together with 1Dry Box, 1 2-gal..
Still, Water Jacket, Steam Tube, Neck, Angular-shaped Worm, Steam Tube, -
with Intermediary Stop-cock ; Worm for distilling water ; Alimentary Feeding
Pipe; 2 Apparatus Boxes, a,24 0z.; 1 ditto, of 12 0z.; 1 ditto, Emilian, of 24
0z.; 2 Faucets; Steam Pipes, with Intermediary Stop-cock, running from
Steam-boiler to the Cooling Tub and Drying Box; little Stop-cock on Cap;
Brass Connectors, hermetically sealed; Steam-boiler, of copper, of 30 qts. ;
Cooling Tub of 125 qts.; 2 Level Tubes, with Funnel; Glass Water Gauge;
Cap of one of the Casseroles; Steam Drying Box, with two compartments
with two perforated shelves; Front Plate; Covering Plate; Side Frame ; Hot-
air Passage; Fish-bellied Roast; Iron Steam-boiler Plate; Wooden Pedestal ;
Little Ring Plates‘on the Caps; Knob, Feet and Binding of the Crank Han-
dle; Brush, Plaster Models, ete.

3569 is of a construction similar to 3568, only with smaller dimensions, its
depth being a space of 2 ft. 4 in., and, in its front, inclusive of a space under
the Cooling Tub (to place Flasks) is 4 ft. 5 in., and it consists of 1 Distilling
Alembic, with Cover, of 6 qts.; Water Jacket ; Steam Pipe, with Intermediary
Stop-cock ; Cooling Tubes for distilling water; 2 Detaining Pins; Alimentary
Feeding Pipe; 2:Apparatus Boxes of 12 0z.; 1 ditto of 6 0z.; 2 Faucets; Steam
Pipe, with Intermediary Stop-cock, from the Cap into the Steam Pipe which
conducts the distilled water into the Cover; Casseroles, with Cover, of 14 qts. ;
2 Intermediary Stop-cocks; 2 Dogshead Stop-cocks on Steam-boiler and Cool-
ing Tub; little Stop-cock on Cap; Brass Conductors, hermetically sealed ;
Copper Steam-boiler of 18 qts.; Cooling Tub of 60 qts.; 2 Level Tubes, with
Funnel; Glass Water Gauge; Cap of one of the Casseroles; Front Plate ;
Cooling Plate; Fish-bellied Roast; Steam-boiler Plate ; Pedestal on the Tub,
with Stationary Screw ; Knob, Feet and Binding of the Crank Handles ; Brush,
Plaster Model, ete.

In addition to the foregoing illustrated styles, I have facilities
for importing others similar in character.

3571.—BUNSEN’S APPARATUS, for GAS ANALYSIS.

1248a. Absorptiometer, for Measuring the Absorption Power of Gases. - $50.00
2410. Gasometer, Bunsen’s, Mercurial Graduated Millimeters.-.-...--. 273
2888. Gas Photometer, Bunsen’s, 5 feet long, carefully registered scale with
sliding and reflecting screen, complete, as used in the Universlty of Heidelberg,
With “PANBO cs ese Se a a We ee eae la iane $30.00

2411. Gas Meter, with Exposed Indices, showing tens, hundreds, and thou-

sands Pressure Indicator Regulator, and Delivery Jet....-..-------- . . $50.00
2800, Gas Rerulation Barnet. sock Succ esc yes Ae eaeoes ee ae treats 5.00
3572. Ditto, Regulator, Kemp’s, ordinary....-.------------------+-+--- 3.50
2413. Ditto, with Bunsen’s new improvement... ......---------+------ 4.00
2407. Gas Tubes, registered in cubic Centimeters..---..------- $1.25 to 2.50
2418. Ditto, 5 cubic inches, in tenths, each.......--.-------+--- sok aT
2417, 18. Ditto, or Absorption Tubes, lipped, in Millimeters--..$1.75 to 2.50 _
1407. Ditto, Syphon Barometer, engraved scale, with support.-..---- 15.00

3572. Apparatus, for the Determination of Sulphur by Chlorine... 7.50
3573. Ditto, for preparing Nitrogen by Chlorine and Ammonia, consisting
of Glass Flask, Receiver, Delivery Tubes, Support and Burner.....----- $7.50
3574. Ditto, for the Determination of Nitrogen, after Dumas..-.. ---- 15.00
3575. Ditto, for preparing Nitrous Oxide, consisting of Gas-burner or Lamp,
Woulft’s Bottle, Gallows Screw Connector, fitted with Mouth-piece and Stop-
cock, bent Tube with Connector, Pint Retort and Receiver, and Lamp Stand
OF ATOR {6 EOL. ere ScaNis Vek eee ann tee Ore eis LAMA Emon ERE ---- $12.00
3576. Ditto, for combining the Gases requisite for forming Exhilarating
Gas, consisting of Bell and Receiver, each with ground edges, between which is

placed a Plate of Glass, ground on beth sides........---------------+---- $2.50
3577. Ditto, for generating Chlorine Gas, consisting of Lamp, Pneumatic
Cistern, Iron Stand, Flask, Sand Bath, etc....-.-..-...----++-+--- ws eho $10.00
3578. Ditto, Deflagrating, for making Anhydrous Phosphoric Acid by
burning Phosphorus in Oxygen...... ect he' se cguupu

3579, Ditto, consisting of Carboys of ‘Earthenware, with Filter for gener-
ating Chlorine.

'

.
}
1

eR he es ee ee

\

OF CHEMICAL AND PHYSICAL APPARATUS. 239

3580. Apparatus for preparing Nitrogen by burning Phosphorus in air, $3.50

- Bd81. Ditto, to illustrate the Diffusion of Gas...--. Na i gel i gt 2.00
2169, ‘Ditto, tor SHOWMIS FNOOSMOSIS . oo dnid soc eb owen wen cniwewene 1.50
3582. Ditto, to illustrate the Formation of Chloride of Ammonia by con-
densing the vapors of Hydrochloric Acid and Ammonia, consisting of a Glass
Flask holding one gallon, to which are attached two Tubes by means of an
ety TAG AC OMMOUUIONS go oes win nica woe 5 ops 6 oo wie oa dain oh Odo Ke wcaw ie mee $2.50
3583. Ditto, for making Chloride of Sulphur, consisting of two tubu-
lated Receivers, Chloride of Calcium Tube, Bulb Tube, Gas Flask, ete.,

MON re ia Ue Se ge i aig wa wie mie p $7.00
$584. Ditto, Mohr’s Ether Extraction...........-.-.-2../5.22.----- - $8.00
(See also list of Hoffman’s Apparatus.)

3585. Ditto, Bunsen’s, for obtaining pure Hydrogen Gas-.-....------- 6.50

3585 3586

3586. Ditto, ditto, for obtaining pure Oxhydrogen by the Decomposition

Gee W Bbet oS ee 2k Ce Seceeee eee os penile f= wba'c SIOD

2419. Porcelain Apparatus, for Washing Gases, consisting of two deep Porce-
Jain Dishes, fitting into each other with concentric Chambers, Receiver and

DUR eae We Nea OLE NN he ie a i ee oe wee ch le bake $5.00
3463. Woulft’s Apparatus, for Washing Gases, 8 0Z...--.....--.------- 5.60
“Ditto, ditto, ditto, ditto, ditto, pints... . 2... 602. 22. en. ------ 7.00

“< Ditto, ditto, ditto, ditto, ditto, quarts ...........--...-.-------; 8.00
1602. Lamps, suitable for the above, each...-.....--. 2.0. -------+---- 1.25
ee PU IGE FOR O10 oa Shae seek wah ewn's cece ws 'es a> ths ody 1.50
1731. Apparatus, for Generating Chlorine, Safety Funnel and Delivery
RUIN IRE TR oo ak ae CU Chae cabo bbe oh ce eerl sas aes $1.35

2396, 97. Ditto, for Sulphurreted Hydrogen, large size, 2 Bulbs, Kipp’s,
$6.00 to 7.50

Baek. AIO; GICLO; SUIAMOE, DADO Bs <6 .)5 2 ng cine dis dala die enible eee ce ns $1.00
2194. Ditto, for the Extraction of Ether, 1 gal...........-.--.-.-.----14.00
2022. Ditto, for Displacement, after Guibourg............------------ 12.00
2019. Ditto, for the Extraction of Ether, small, .or Displacement Appa-
ee eat ati oes ee pod ak ee Ra kh Rede Seabee ges sh ccene onl scents 75
3406. Bottles for Washing Precipitates, Faraday’s pints....-.---.---- 50
Te Mth, TEOs CIUED, Ci0G0, QUATIC. os can aa cok dine dbo ainy a san as ses 4D
Ses eV OLUGION FASE, COIMPIOLE i. 665s cn ans Senate ie wnnie nein ne ssaceee'ss $1.25
Gas Bottles, with Receiving and Delivery Tube.....-.--.-.---.-- ae

DaGer MeyGregen- Generators 550i 2 lnk otis n ween ene arenes $5.00 to 40.00
evo SAVOY: CIGLO, GUATER joys on nian pe cesek~Sesseeeene- Sea dass 20 SiG am $4.50
Pe eens GUI OR RE a es oa Leg eewinn do nddnd Kee on sents 6.00
2407. Pepy’s Gas Holder, of Copper, 10 gals.-...:......---- +-------- 27.50
“Ditto, ditto, ditto, ditto, 15 gals............-. ine eiass ka ceteds 37.50
2406. Ditto, ditto, Japanned Zinc, 10 gals...--..-..--...--------- +--+ 22.50

Ditto, ditto, ditto, ditto, 15 gale. >... sccence cena cocenescsess 27.50

DESCRIPTIVE CATALOGUE

BENJAMINS

B.

+
4
4e

240

Hoek ‘tpowo ‘vot ‘uomeoyddy ‘930 ‘Surprise ‘Sutyeidosjoepo jo ssovoid oy4 ut
uo pey oq Leu sjyopqdurrg eaydioseqg = “yynoyjrp ao poyvorpdutoo | out UeALS B UT poyIsodep puly Aue jo [eyout Jo AyTQURNb oy Sut
esiMou UL puv Yous ALSuTpoddxe ore suotyeiodo syy ‘Aanfar | -uruLtejop io “oqo ‘soTqvo ‘sout, YdviSoTo} UO Sasso1d PUL S}[NVI
wodp eyes APOATPVAVA OD puY ‘WO1ZRI.LOdSUBALY IOF JUITUOAUOD ‘ULLOF | ‘SYVoIg SuyRooy Ao ‘suLto Fo suorpprur 07 dn soury Ydvasoyey Jo

govrduiod puv [eUaRysqus B Ur ‘Uo sry} UL provAquMa ALY pauiqwod | BdULISISOA LOTIYRTNSUL 9Y} SuTULUTIOJOp Lo, ‘suryo 289 oO ulYyO UB

sasodund ay)iuns tof spuaunaysur wayzo 7/0 fo sayiondyo ayz ‘yaoys ar | Jo®°loyy wo “ogo ‘sorta YdvISoloq ‘AJOL1y90TO JO SIOJOUPUOD TV
pur ‘sosodind [rotjoojo 1oyjO 10 OTYAvaASo[o} TOF OAT SUISN LO | JO oOULISISEL OY). SuLMsvoul ATQDoIIp AO “SoLIoZJVG Jo YISue1ys
SuLmMgovynuvur oso} OF gouvjzzodue years Jo aoyyvur v ‘raddoo Jo | puvx soueysisor ‘oo10, OATJOUI-O.1}09[9 OY} Sururunejyep ATeyRaM9
Ayjeroedso ‘speyourt Jo AFrATgONpUOD oYTIedsS ol} HULUIULIOJOP TOLL -Ov LOJ “VUOMOINSVIT OLIJOO[Y Loy sugervddy s,Ao[peig "OOZES

oLce

“LNANIYASVIW 314193973
dOd SALVdVddvV

Sc ADTIVUG

AANA

‘ai

i

by
ee OF CHEMICAL AND PHYSICAL APPARATUS. 242
Ee
: APPARATUS FOR HEAT.
eo 3587. Apparatus, for showing Specific Heat. ...--.-.---22..2--2..2.- $5.00:
: 1828. Conductometer. . ‘ ieee te 2.50
$588, Apparatus to show Spheroidal State of Liquids, as per No. 52 of Tyn-
dall, on Reet occ phe ia de OU Ck Sc ays oay's $2.00
| 3589. Trevelyan Rocker, according to Tyndall, Fig. 27..-........... 6.00:
: 3990. Straight Roller, Electrical, according to Tyndall, Fig. 30..-.-.. 8.00
; 39591. Elliptical Roller, according to Tyndall, Fig. 31....-.....- 10.00)
3692. Apparatus, to show Influence of Pressure at Boiling Point, nak
eee en figs AOE Ll ne eke oe RES A ST a NN eee Ueto map ges bare eqns 8.00:
35938. Ditto, showing Development of Heat by Compression of Air, Fig. 13,
$4.00:
1779. Bunsen’s Furnace, for Organic Combustion, imported, 25 Burners. 60.00
AGH PLU, COMCRUIC, 20 DUINOIS. 2.'5~ 4-252 - 0 ~~ Sie cide's eb ic temo wee dae 50.00
EI BOT OGAN C0 Ot PLEIN a ho can CS a's wish vs ed ga sialsle ee shee ee whe 40.00
1781. Ditto, 10 Burners aN edt alae Swank owe OMe
3595. Sefstrom’s Chemist’s For ge, “imported So Wher 2 175.00
TATE TAT Ae GEL PAB UCDINOB os << Sues Shes oo ence oes pe ww ek 40.00
1778. Liebig’s Combination Furnace, 24 in., $3.25; 18 in........--..- 2.25.
1209. Ditto, Condensers, Glass, small. See io Nr ee Owe ua ie ee OR
1811. Ditto, ite POR Oy TURN as os ca a's Sos Noe nA Ca eon © hes od emda 3.50
1812. Ditto, ditto, PMN I i a neko lt kako wis ean ue dew pede 6.50
1813. Ditto, ditto, ditto, RM ee eh ecg oe 100
4
3599 3603
rt
; 3996. Carré’s Ice Freezer, imported OO OMIGR coon a) based essen es 150.00:
2992. Pulse Glasses, carefully packed in pasteboard case, eibabe a 00
EOE MRI ON ONOE OU oo .. ois oa doo ee on we whe ob ee ehin tees <s 50
3597. Parabolic Reflectors, with Iron Balls, Support and Stand of Brass,.
Se ai ea eas fu Lc wid ais Sg hl nas dda Py yuaw'<-cend sone wees $12.00»
Bs) ores Lato. Giteo, Grebo, Gitte, 13. in... cs. pigs cee oes Htc ewes 16.00:
ye + Ditto, ditto, ditto, ditto, By Re eerie ayo eakk cup aware ie ae 25.00:
q 2879. Ditto, ditto, ditto, ditto, nickelized, A ies te es ge een 15.00
. 5 Ditto, Miteo, Giteo, Gite; GittO, 73 Mi. os occ eee ee ees 19.00
K ‘* Ditto, ditto, ditto, ditto, ditto, We re ee ee 28.00:
Be The Nickelized Reflectors are not easily corroded, and retain their polish.
EB 2529, Psychrometer, August’s, wet and dry bulb, mounted.....-.... $12.00
. 3304. Differential Thermometers, Leslie’s, each...................-.-- 2.50:
( soaos. Radiator, Leslic’s, each. 21. 5-5. oi. o on coe ele ce cen noes cee e'n. 250
E 3004. Pyrometer, Three Metals, ordimary......-......-....--.-...---. 6.00:
P. 3005. Ditto, ditto, ditto, extra fine, with Brass Revolving Alcohol Holder.
B $12.00:
: 3599. Brass Ball and Gauge Ring, wooden handle, showing Expansion and’
Pi eGMt RGN DAN MRA «a ine Kaan hot en a wees gs Benes Wo ee wes Ose he Ale $3.25.

1808. Compound Bar, showing Unequal Expansion..........-.--.-... 1.00

242 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE :

APPARATUS FOR HEAT.—Continued.

' 1827. Apparatus, for showing the slow Conduction of Heat downwards by
PRS oe ee ps oh ip ooo a ee a ee een be eee eee $2.50
2268. Glass Fire Syringe, with Tinder, 10 in. long...
1347,; Wiameless Lamp << s.2 5 ie cic, ivi een eawe reese ese bah acne iene

1960. Davy’s Safety Lamp, for Miners, etc.........-- 2.22.0 .eeee esas 7.50 .
2aze.” Wire Gauge; 10 frame sos Ceo, aes es Sade ae eee te ee ee ae
1912. Cryophorus, Wollaston’s, double bulb.... ........-.-...-------- 2.00
1918. Ditto, ditto, single bubbs oo. ie. fo pnd coed wane ewe ahora
2527, ’28. Hygrometers, Saussure’s............----..--. $4.00, 8.00 and 12.00
Mowe. Ditto, Mason's 3 soi). 5.05 iad wah ae ha pes eee eee weenie pees 4.56
3306. Maximum and Minimum Thermometers. .......--.--.---------- 4.00
3310. Metallic Thermometers, Watch Form......-........---....-- ---- 20.00
1200. Air GUO <n oo os ome ee GSS ag h be plone Ws Pe et we Eee 25
4b, Water Hamers 052 65 ce ayo cae Neen a ek a od ee ae Se ee
“2003. Brass Jets, for Burning Gases: ss co. 65 bo as So ae een ee dan tee
‘2564. Ditto, ditto, ditto, with Stop-cock and Flat Tip.........-...-... 2.00
1791. Combustion Tubes. >. ys ea wnt ye ee eee eee 40 to .50
3306. Day, and Night ‘Thermometers . 5 26.3500 seen cco cew nh pce eee tees 4,00
1477, 79, 780, 731. Oxhydrogen Jets........ $4.00, 10.00, 15.00 and 20.90 each.
i649. Candle Bombs, pet dog. 20S 6s Soa cae asa ee eee 30

3600. Hygrodeik, Edson’s, for ascertaining the sensible Temperature due
“to Evaporation, the actual Humidity; Dew Point and absolute amount of
Mowture. .- sos soa). 5. en p eg sepa nesew sane Seeley eee Eee Peers $15.00

APPARATUS for HYDRAULICS AND HYBROSTATICS.

3601. Model of Forcing Pump, complete...-......2-.-...-.- aa cioay $20.00
ove4.: Pantalue: Gap .¢ $25 052 fo xe cas cts oh We Bs kee een ee weeks 2.00

rtm

3620

2098 3629
3602. Archimedes Screw... 22520. oo so Sa eee Deeie Sacwae cease 5.00
3603. Equilibrium Tubes, a set of 6...-.--.-----.------------------- 3.50
2098. Hiero’s Fountain, of Glass... 2.2222... see eee cee eee cers cone 18.00
3604: Barkers Mill; plain .: 32 5-055. sedis. ose eee cece wanes 6.00
3605 Ditto, ditto, with Stop-cock.........-+...----------+- +--+ -+--+- 10.00
1686. Hydrometer Jar, with Balloon Car..-....- au Solace wikmiaace 1.50 to 5.00
2524. Nicholson’s Hydrometer .--.....---.----+---+---+------++---+-+-+----- 6.00
3606. Archimedes principle, Brass Cup and Cylinder.......... 3.50 to 6 50
2461, 2520 Hydrometers, various ......---. ..---.------- bial oa .75 to 2.00

2544, 44. Ditto, Jar, Glass Foot, with or without Lip-........-..1.00 to 2.00
— Specific Gravity Balance.........--.---------+-+-.-+-++15.00 to 20.00

:

OF CHEMICAL AND PHYSICAL APPARATUS. 243

APPARATUS FOR HYDRAULICS AND HYDROSTATICS.—Continued.

1684. Cartesian Imps..............- Bt FREES SONA ey CRO ee Cepaioe™ 20 to $1.50
Pa OR ERS ARON a oF er Lk ers 50 to 1.50
2607. Wurtemberg Syphons ........... 0522. econ eee == --- ee ene. 1.00
Pre PME ASO co hee st Sn ee ae Te oe. 6.50
ernie MORIA NEAT OP ADTOGB oa oy aoa Sk op se vin oo orn ace ehesauese 1.50
EE EE a og SI EL RSS Cam al co aS NEES aa BOD a DOS sepa aE 1.50
Re ere nce ONG Tal... fos te oe ee 2.00
1654. Ditto, Plates, with Pan, to show the Parabolic Curve........... 2.00

3609. Apparatus for showing the Principle of Archimedes Screw, consist-
ing of Archimedes’ Screw, mounted on Wheels. When the Rod holding the
Serew is swiftly revolved, the machine will be propelled.............-. $10.00

APPARATUS FOR MAGNETISM.

II SR OROU ECO ATLOS ce cea 5s 2.50
3611. Ditto, ditto, on Stand, to lift Weights -.......-.-.....---..---16.00
ae iu, C1tto, Revolving, Page's... ...5.4-- 66 sae snt a one ene 8.00

2624
$612, Circular Magnets, with Ring -....-....--..-..---.--- Gow 4.75
DU RAED PCN Se ee aad vee ceeel ys deccees 4.50
eee. Conmecing Helux iiccs sles. otk ae ed Se B00
a VONURIO 8 INGO a an acon se tee ees 4.00
ere SAME NOG MGONOLS, OMS 6k ooo eda. 2 ols yok ca ewes see dee etl .30
Pat Me AO AIL O0! OR TEb Sooo in oe Sco na wv Le ca cca y oe ese .60
ie Miata Gite kin io oR ty er ysh la ci goowe te 15
ee Ores Aiba Gtk G iy ee et es ado s ssawe vines ERD
Mee TUR, LOO CIEE, 2 TNS nS a Sos SWletia ok pee aged has tee meee dees 4.50

meee, Gi0t0, Citto, compound 94.605 We. ce ee ee eek. 4.00

244 E. B. BENJAMIN’S DESCRIPTiVE CATALOGUE

°

APPARATUS FOR MAGNETISM.—Continued.

2646.: Magnets, Single Bar - oo: os co. So. cate des Ups seminar eek akc ot eee
29649, Ditto, Pair, with Armature. 22.3). p oyes ic wo nlew ache ee tees 3.50
3616. Ditto, ditto, ditto, Wheel Armature...................--.---- 3.25
2650, 1800. Magnetic Needle, on Stand .........-....2.2...---. $1.75 to 2.50
2651. Dipping Needle 5 lisse hdc eins ee eee eae 2.00
BGR; Adhesion Plates. s <2 .5oc5 ok Keel bg bare ean en ces pone ee 1.50
83618. Lodestone, according to size......-......-..- .50 and upwards.

3619. Gassiot’s Cascade .. ._- Sin ata ak oN k hey

(See also Electricity, in regular Catalogue, under E. hs

APPARATUS FOR MECHANICS, Made only to Order.
3620. Inertia Apparatus Po tas

1772 Collision Balls, Lignumvite, set of a Livbs we bad cp hee aat Cuiees 3.50
3621. Centre of Gravity, aetof 8.0 ee ee ae
3622. Leaning Tower. See odd kin kd ie Lig Rikie Lataherkitb io aae ae
3623. Whirling Table and "Aécensories Seiad delavin Saw Late Oe au w ean Uebel 33.00
8624. Centrifugal Forces, Per 80bi5 50): Sawn es cade caeeaamensse eae aie
3625. Illustration of Weights and Pulleys.- ap. bép Wah d weve wale pane

-. ———_@
im MTT TT MM ccc

3625
3626. Screw on Mahogany Frame.. OG OLN At ge oe
3697. Sots of Solida 2... s.cc 10k. s cdecpewseuss ornare ee ede eee ee
$628. Dissected Cond. 2k 262.65 suk bis peeec sc eee eres eee
3629. Gyroscope -- ult cosh Cae stay hea 8.00
3630. Atwood’s Falling Machine... - $75.00 to 150.00
3631. Apparatus, Brass, showing the principle of the Reverbal eet
R632. Inclined Plane 2... p55. core eae ele aks oe hee ene ee
OPTICAL APPARATUS. |
2168. Duboscq’s Electric ona Li ee petae Stace Pope PANES HY A S $400.00
2169. Serrin’s, ditto, litto.. BSE ge ee er ed ee Se eee
2640. Magic Lantern, Gennaro 5 eA 25.00

2639. Ditto, ditto French, Oneh oc is sews fee ees $6.00, 10.00 and 25.00

E
:
i
:
F
Pe
:

OF CHEMICAL AND PHYSICAL APPARATUS. 245

OPTICAL APPARATUS.—Continued.
$633. Illustrations on Glass, for Magic Lanterns (Fancy Illustrations),

per kot Sine pak ale wt Van hk Gains ANNO hy Raa ee Ain vik d bis eva bea vaio $5.00 to 10.00
3634. Electric Lamp, by clock-work, made ‘to order.......-.-.--.- $150.00
ME EGO SIE one eh os sade aes ob Cie vin dans Ve cee e 50.00
2607. Magnesium ER re ce See inks 6 Gained. aoe ib So vedic de owen 25.00
2608, 2612. Oxhydrogen Calcium Light....-..............-.. $7.50 to 25.00
2613. Carbon Points, mounted - - Malin BR Uuomin ae ks Rae ee
3636. Ditto, ditto, ditto, With Reflectot:6..80 0-272 0.,.. 20) S800
2637. Ditto, ditto, ditto, RIPE IGDORICS See ee a a a 7.50
3638. Ditto, ditto, without Lenses and small Reflector. Cet piles ae 30.00
1679. Ditto, Pencils, OM ON Sionika she vad at cat nes = deve seas ee ageos .06
3639. Spectroscopes, Duboseq’s, imported to order...-.........-.---- 210.00
3139. Ditto, Browning’s, 2 Puna ee es ae fs aneele ks ROOD
3138. Ditto, Heildelberg, single Prism, with 2 Lamps, 2 Holders, 12 Platina

De oie Oh SORE INES st a SS RGM POE a pi ens gph pe MR $65.00
Sia, or, ineo, - Browning s; Hand oo. 6.02... oe nol. seks $15.00 to 18.00
1728. Charts, showing the Spectra of Metals and Stars, translated into

REI ROM Ce au rite itl wee ne ek nie st 4 a US ue oe AA oy oes sue be $3 50
3257. Merk’s Telescope, High Power, with Strap for mounting on peter

30.00

2681. Gundlach’s Microscope, 2 Eye-pieces, 5 Objectives, with Slides, ete.,
all in an elegant, highly polished case; a very superior article, complete.

$200.00

2680. Nacht’s Compound Microscope, French........-.- reap AKG wet 20.00
Waits SAECO ieee LED PMITOUs 3 co ob oe oo ae el SW de Soke pew bee 15.00
2682. Accurate Solar Microscope, complete, in fine box, hinged Cover, ete.
$200.00

1768. Collection of Rare Specimens, for Spectral Analysis, with Platinum
Wires on Glass Foot, and Stands to hold them, with Sliding Box ie... $7.00
We. Watchinakers: benses.. 60.0602. Se 2.50
1769. Collection of Objects, for Solar Microscope, mounted............25.00
1871. Microscopic Covers, Circles, very thin, per ounce............--. 4.00
Bese Seto, Gituo, Sanares, Per: OUNCE). 2 4 ys cb cee scene coos 3.00
2687. Ditto, Slides, MOIR OR ON i eas bed oe kre oe skew Ck Sal wwe ee 50
2629. Camera Lens, or Asplanat, Dy SORT ea ie Ss ese eues . .30.00
2976. Set of 3 Hollow Prisms, mounted on Raht oe ot oo
3640. Ditto, Acromatic ditto, ditto, ditto......-..2...22.-..-- Siesta 30.00
S641. Single Rectangular, ditto, AWtaT he pec einen tae. 16.00
See IIN A Sr UI cs ee ir eu Nate b ak we alae $6.00 to 12.00
2988. Equilateral ditto, 35x33 N. Y. in., each...... 2.2 eee ee eee. ~ 5.00
2983. Acromatic ditto, 30x27 N. Y. in. , per MO ache eves Sena esd oe ek ee
2984. Ditto, ditto, 35x32 N. Y. in. , per DR a hoe bis & by See atnae . 6.00
2985. Ditto, ditto, MUR Ne Rieu gaan noes Lcabedas sae reunt ote sway oe 7.25
2986. Ditto, ditto, Mites Wy Ma eG aes Cee ace ak bn a hewn k 9.00
2931. Prisms, for Dark Chambers, 15 Lines, each...... ......--.. - 2.00
2982. Ditto, ditto, ditto, ditto, oy Lines, each.. : 2.50

2974. Elegant Hollow Prism, Bisulphide of Carbon ‘Prism, all the. Joints
fitted exactly, without flaw, blister or striated lines; a valuable gem for a

Cabinet, and made by the celebrated Dr. Steinheil, of Munich. ........ $50.00
2959. Polarization Apparatus, Mitscherlich’s, with Extra Tube... .--.-60.00
3642. Model of the Human Eye; showing the Motion. 2.0.0 Ge 2.50
2234. Eye Model, showing the Reflection on the Eye Lens, with the use of

DUPE cae ee ee ae Sek ame waa cuidt mid Owe obs ode labels $15.00
2621. Magnifying Lenses, IR RROAV OPE, foe eeu. CV te ee 2.50
2631. Set of Glass Lenses, 6, for Demonstrations.........-....-..-.-.- 2.50
3643. Mirrors, Convex Wee dative oO er iS, eee 2.75
2632. Apparatus, TA SPC RRM TRON HE EAD So lo Svcs oo ge ba He Saale 7.50
2810. Ditto, for showing Monochromatic Light, 5 Burners.............12.00
3109. Ditto, Hoffman’s, “for Inve rting the Soda. Flame ies. 355 $3. 00 to 3.50
3644. Ditto, for showi ing the Oxidation of the Soda Flame ........-. 2.00
3645. Ditto, Hoffman’s Flamc Apparatus, with Argand Burner. .-...- 5.00
Pe: eID, OOGMIN BION Boos ak So ke eas Wes hee cena pes 225 to 2.50

2623, ’24, 25. Ditto, Stanhope, German Silver...............-- 2.00 to 3.50

246 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE.

OPTICAL APPARATUS.—Continued.
2526. Loups, single, 9 lines, .75; 11 lines, $1.00.

Pied; DIbtO, MOBDIE. 2520S eda Sac donten oo oR ECE Sate ee $1.25 to 1.50
Ree. MUCHO, ATIPIC. S's 5 oo pain, dacs kp SSR Re ae ebae 1.50 to 1.75
2633. Apparatus, for the Recomposition of Light...--....-...--.--.--- 2.50
2676.. Microscopes, No:-1, Universal Joint .. 22.3 ..6c sees ec kbcece oe sees 7.50 .
1) MONO, INOS Dn ce rams wpe Cabs eh ds ves hye Mea eee Wah iueivie cage dane 10 00 -
MaNl a AIROLO, INO, BS os JES Sa wigs o vig > he we a eae alee 15.00
2679. Ditto, No, 1, in two:columns, 66. .'cco: 260 barns ded ceewe cee tek 25.00

3144, 45. Lantern, Browning’s, for projecting Spectra on the Screen.
$50.00 to 150.00

APPARATUS FOR ORGANIC ANALYSIS.

9048; “Air Pump Plate, 74 in ook ian yk ae aewnsibew i one gence wees $25.09
1362. Aspirator, the same as used in Apparatus 1352, on p. 15.. -1.50 to 2.50
1360-to 1362.. Aspirator,' glass... 2. onsite cee nme van peu mcennee 2.00 to 3.00
1365. Aspirator ‘Tubes. . jek nein an ake a Oe
3646. Complete set of ‘Apparatus ‘for Organic Analysis, “according to
Liebig role ig a Se ee Mew eee nO pee eee ED
1714 to 1720. Chloride of Calcium Tubes - fc nee hein ew was ie ee
1776. Combustion Boats, porcelain. ....-.. 2.2... - 2 sos- 2052... 20 to 50
2926. Ditto, ditto, Platinum, per erain.. sonic & sign’: snk Sua oe ai ReaE 03:
2375. Ditto, Furnaces, Bunsen’s gas... --.... -. 2-22 ts ae +8 hen rcaay 60.00
1780. Ditto, ditto, American £88. 0i.5- 202 6h ne ceeds ceecneeu bt hacon- OUIOD
1781. Ditto, ditto, Fretich: 988 5.2.7 <\'-3.-> va be ate v apace SOs peer ire 30.00
1782 to 1786. Ditto, ditto, to be used w ith Kerosene.......-... 12.00 to 40.00
17775 Ditto, ditto, Stover 8.5 owes in ven tan oe pnw enh Pe peta ee sewers 1.50
1778. Ditto, ditto, Liebig’s Charcoal on 0 cee <- estas Vane se ee 2.50 to 3.00
1789. Ditto, ditto, Foil, of Copper, per OUnCe 2. 0 oc cl scc ep ieee uuale's = 56 OD
1791. Combustion Tubing aabicn dhs stale Rh evee seeks The kie anes .40 to .50
1792. Ditto, ditto, for Nitrogen determination.-.-........--..----. .35 to 45
— Copper Turnings (see ee pe Lb... cece cao eee cae 1.00
2423. Ditto, Gauze, per sq. ft. - ad do meh sate ts Seale apie Nake Soe aie ke ee
2050. Drying Baths oe ath eee os kone ewhase hhe es ead ceeien Cat eee 2.50
2061, 62. Drying Tubes, Lichbig’s: 2062.4 52s pcs. cowwan chee coca ee ee Oe
2343. Filling TNCs Bio S es t ee taxa saat nine eee caeeie@ cies aia aenen 0
2417, 718. Graduated Tubes for Nitrogen determination ........--. 1.25 to 2.50
2416. Glass Tubes, for weighing substances to be analyzed, per doz.... 2.00
3387. India Rubber Tubing, 4 in. bore, per ft. -..........---..--------- LO
2664. Mercury Jar, of plage iio ia iw os ae hoe e ominn aoe peas 1.00 to 2.00
2670. Ditto, Trough, Porcelain, to hold 5 lbs. of Mercury....-.-...----- 1.00
2671. Ditto, ditto, ditto, 16 Ibs. Gx6GO on so iS Ca ee eae ee lacdte ue bike 2.00
2853, Nitrogen Bulbs, Horsford’s ;. [i200 2. coca ctchaw wes des pe sean sees 75
3647 . Ditto. ditto. Simpson’ Bink oon Cabs ob op patcnbae Renowned eames 1.00
2968. Potash Bulbs, Geisler’s or Mohr's: 5 ccbsic cog eo ee
2066, Ditto, ditto; Liebig’s: {2 ..)s ss ds ee back ye Seen nee See ees 75
2969. Ditto, Pipettes oc i- os Waseds Wade ssweee lhcswei eee aoa 00
2343. Buction Tubes 30 vccciiececnasoechctenwties eee pmeteies te bihe eee Cue
S220. Wood Supports ..2 ose fi nnwiecds cok. ssn nnks Cdeentenueheubembare 1.50
CHEMICALS.

Black Oxide of Copper. Chloride of Calcium, fused.

Chromate of Lead, pure fused Chlorate of Potash, cryst.

Soda Lime. Copper, in fine strips.

Bichromate of Potash, cryst. Ditto, Turnings.

Caustic Potash. Asbestos, long fibre.

Chloride of Calcium, crude, dry.

APPARATUS FOR PNEUMATICS.

2946. Air Pumps, large and powerfal ... 22.2. -2.2 00. sec nee e+ ces ene $100.00
2951. Ditto, ditto, Mischtetlich’s 22... Js< ccccns ctor wncedecenss sesesn 10.00
2950. Ditto, ditto; ditto, Mounted ... 2... .cccae conn cceses ne sas tnn voces 15.00

uy
4
Z

i
7
:
b.
F
b

5
F

Depterese Calo. oo. 5.8. $1.50 to 5.00

producing a constant stream of water,
enclosed in a fine polished Velvet-lined

UF CHbMICAL AND PHYSICAL APPARATUS. Dart ees

APPARATUS FOR PNEUMATICS.—Continued.

2952. Air Pumps, Liebig’s, Brass Cock 2.2 <2... 5.2 3) ese sen Sees $15.00
2948. Ditto, ditto, with Plate and strong Clamp to attach. to a Table in

place of Mahogany Me le eR Ree ot OO SS ae I oe cali $20.00

2948

2948. Air Pumps, mounted on a fine polished Mahogany base, with heavy

EE EINE INOS Mae hak cg ncn Nip ie vn Ries ary BP le oem Vek wots $25.00

The more costly grades of Air Pumps can be furnished, when desired, of

first-class workmanship.

1443, Swelled Glass Receivers, with knob, 4 gal. $1.50, 1 gal. 2.00, 2 gal. 3.00
1444, Ditto, ditto, ditto, open tops, 0 AG Ee 2.50, Dl G0
1449. Plain ditto, ditto, Wa ee aos quarts, 75 cts,4 “ 1.00,1 “ 1.50
1446. Ditto, ditto, ditto, tall, with knobs, ** 75 “ 4 “ 1,00,1 ‘* 1.50
1442. Ditto, ditto, Gitto, flat, ditto,..... 6 in, $1.25, 8 in. 1.75
3648. Receiver, with sliding Rod, Hook and Ball.... 5.00

Ditto, the Cap and Stop- “cock fitted, extra. ....-. 2.00
PER AT LOL PIOININGY | 65 is hes ca a wn oh 2 lo dks Velo wns t 1.00
2595. Bladder and Hand Glass.......-...-..---- .75 to 1.25
3649. Magdeburg Hemispheres ...--......-- $7.00 to 10.00
3650. Bolt Head Experiments....-.....-.......--.. 4.00
2608. Mercury Shower...........-.......-..-- . 3.00

1289. Air Balloons, glass, for weighing Air, 4 gal. devegt da00
1405. Ditto, ditto, rubber and Gold-

Ditto, ditto. See Balloons.
3338. Torricellian Experiments. $4.50
3652. Guinea and Feather Tube,
$8.00 to 10.0
3653. Bell, in Vacuo ......... 4.0)
1684. Cartesian Imps, singly, from
.25 to 1.00
1686. Ditto, ditto, in Bottles, from
$1.50 to 1.75

3654. Model, Hydrostatic Press,
$20. 00
2459. Hydroclyse, or Forcing Pu p, :

3652
UR uA VWs o's vn KS saa ines comes Dee Gatos Me pieale ek ss ook kaw we $4.00

248 «EB, - B. BENJAMIN'S DESCRIPTIVE CATALOGUE

; APPARATUS FOR PNEUMATICS.—Continued.
2460. The foregoing can also be used as a Syringe, supplied with Male and
Female J oints, in fine polished Velvet-lined Cases ...........2------2--- $5.00
The above is the best form of Injecting Syringe known, as its Valves and
all its appurtenances are all Metallic.

3655. Hydrostatic Balance. .................--2.2.2. Owais nati ates $10.00
$656. Apparatus, for upward and downward Pressure..-....-...---- 14.00
weodv, Daromoter Apparatus. 006 5.0.2 55 osu oo Se Hew hd oe bbee peut wee 6.00
i822, Apparatus for Am Cylinder .03.:52., wees tbc 5 done ee baabes Sbauoe 12.00
'V316. Preezing Apparatuas 2... 206 coc he ks mee cttaahe en baees $3.50 to 6 00
AVIS, Cryopuarens soe Cousot. ony Sislgw es ed eens + peas aL eas 2.00
1648. Bursting Squares, per. doz :. 25 8.5.2 ivcass spa eceeds wasn eeebos 2.50
3658. Apparatus, for illustration of Marriotte’s Laws.......... ..---- 10.00
2904. Bubble Pipe, for Gas... ..-.....--..-. +--+ nee cee eens eee ese e eee 75
2313. Fountain, in Vacuo.. itech cok ane
2953, 754, ’5a. Pneumatic Trough, J apanned, 1 12 in. 3. 00, "15 in.3 50, 16 in. 4.50
2956. Ditto, ditto, Glass, solid, 12x5in .. fet a ED £6 0D
oe Ditto, ditto, with Brass Sliding Shelf. . Liss hee aE E ae wee ey BOP
‘2957. Ditto, Turning Corners, very stout, 1350 in 0G, ee
2958. Ditto, ditto, ditto, ditto, 14x7 in..--... Geis vtec SEO
— Ditto, ditto, Por celain, for use with Mercury. "See Mercury Troughs.
1441. Bee-Hive Shelv es, Porcelain, START Aes oe See au noe wee ae BR ee
“Ditto, ditto, large... pitas = oe co alae as bade ie Ce Dae oka ere hanes
s Ditto, ditto, ditto, Barthaes 60 SEO a a ee

Fittings. See Stop-cocks, ete.

3659. APPARATUS, recommended by Dr. Scheibler and others,
for the Analysis of SUGAR, SYRUPS, ete.

1257, Apparatus for determining the quantity of Carbonic Acid in Bone
Ash, accompanied with instructions, bottles, ete., corrected by Dr. Scheibler,

$35.00
1259. Dr. Scheibler’s New Apparatus, for Quantitative Volumetric Analysis
ol: Ceorbonte’ Aci 6.258 bo ohlie Se AUN Saks PNAS hep tara ae hae ee ae $45.00
1313. Salleron’s Ale mbic, for ‘Testing the percentage of Alcohol in Saccharine
AOLNCIONS | SSC ye ey Ss Gah eae st edi Gre tan a oka a Maat oleate $25.00
1374. Balance for Specific Gravity, sensible to ¢ #0 ofa millogramme.. --77.00
1376. Ditto, ditto, for 200 grammes . . Sete ids OO
1648a. Colorime ter, for the examination of Sugar and Syrups Sais ace dad
1949. Mixing Cy MBOSrs sous foes en oe ee 1.30 to 4.50
2044. Drying Baths .. Fle REREE RE MOR RSs sey er. gL dante 15.00
2205 to 2230. Evaporating Dishes -.2 be eee upwards.
‘2495 to 2499. Saccharometers. - cd du wing oe Cae Was od at eee ee ee
‘2500. Ditto, according to Dr. Scheibler.. Be ns ae oe ae
2635. Centimeter bottles, stoppered 005.25 ic Sais geese eee ae age Tee mae
2636. Ditto, not stoppered . a: So tm tle cis cALS oan ears ee ee
‘2637. Ditto, with two marks on the netk Jos aves caat eee .60 to 1.25
‘2692. Mixing Bothles 5 Pese ey ONS see eee ae 2.50 to 3.50
2959. Saccharimeters, or Polarization Apparatus, Mitscherlich ....... 60.00
- 960. Ditto, Wild’s, in Mahreeny CABG i008 ob ca tow ae seemed a eaaas -175.00
2961. Ditto, Soleil . sais 4k Pao Sl Sues de eg lin Blea y Aimee was ater e eign nce Rane
2962. Ditto, Soleil- WONtZRO 2 occa ut, tuto weetee Ceemee nee pene 225.00

APPARATUS FOR WATER ANALYSIS, ETC.

3660. Apparatus for the Decomposition of Water, mounted on stand, $2.50
3661. Ditto, ditto, ditto, with cup complete, according to Faraday.. 5.00

3662. Ditto, ditto, ditto, unmounted, Hoffman’s....- 2.2... 2.0. 62. 6.50
3663... Ditto; ditto, ditto, mounted)... 0005 sek ec a oe swe ees 10.00
3664. Ditto, for the Determination of Water and Carbonic Acid in the
atmosphere, after Fresenius ..-.. pai Paya ooh Sats a

3665. Ditto, for the Analysis of Mineral ‘Waters, Dy ‘Fresenius. ..... 10.00

>

‘

OF CHEMICAL AND PHYSICAL APPARATUS. 249

APPARATUS FOR WATER ANALYSIS, ETC.—Continued.
2443. Bunsen’s Apparatus, for Rapid i lcci: pane EEK a Sak Wem ae sdf eke
3666. Ditto, set usually employed, including Flasks, “Funnels, Mould
WI Cr MEA ORO AT oh Grok dk oa Babe okies Cowra ce abba te bas wie Ube ais oie ee 13.00
2247. Support of Japanned Tin for Bunsen’s Apparatus. ..-..---.---- 3.00
2252. Flasks, for Filtering, extra heavy glass, wide mouths, 16 0z...... .40
tes Pee SEALER SEU, OE OR ooh Soe eld lerane wap 0 op te alam em We Shs’ e 50
ee TRH, CRUD MIS cess da! 8 RS ewan Shee ph ae eta sesas .60
2319. Funnels, prepared expressly, and ground to an exact angle of 60 ci
on Moulds made for the purpose, 14m. ...---.----------------------+-- 15
AY OME CLEC, ARROGANT ot AU aga wetcewiciey seco dsewatd .20
‘* Ditto, ditto, ditto, Pilthad wa eae Rass scala eo peur ey FAN 30
‘Ditto, ditto, RUMOR ARIS Se al ae a ocak ao Se bs Sea dk wake’ o wey .40
“ Mould and Holder for preparing the Cone........---. Risen, Ue eae 50
1830. Platinum cen for Supporting the Filter, price according to weight,
SIA UL PL he thas Gas iM oo uP OSE dae bubs so ae Cbs as wees se "95

VARIOUS FORMS OF APPARATUS,
ACCOMPANIED WITH
ACCURATE DRAWINGS AND SPECIFICATIONS,

MAY BE MADE

SPECIALLY TO ORDER,

EITHER IN

GLASS, BRASS, OR WOOD.

ORDERS ALSO FOR

TECHNICAL AND TEXT BOOKS,

WILL BE
EXECUTED PROMPTLY,
AND

PACKED WITH GOODS IN MY LINE, WITHOUT EXTRA CHARGE.

250 E. B. BENJAMIN'S DESCRIPTIVE CATALOGUE.

3667 Dr. SQUIBBS’

NEWLY INVENTED

UNIVERSAL LABORATORY SUPPORT,

Adapted to sustain Tubes of any size, up to 3 inches. Price, $2.50 —

This Support supplies a want long experienced in the Labor-
atory, in substituting a single Apparatus for several varieties.

3668.—RELATIVE VALUE OF VARIOUS WEIGHTS
AND MEASURES.

TROY AND AVOIRDUPOIS WEIGHTS.
Pounds. Pounds. Pounds. Ounces. Grains.
1 Troy = 0.822857 Avoir. = 0 13 72.5
1 Avoir. = 1.215277 Troy = 1 2 28.0

3669.—RELATIVE VALUE OF TROY AND FRENCH

WEIGHTS.
TROY.

Millegramme = 0154 grs.
Centigramme = 1543
Decigramme = 1.5434
Gramme = 15.4340 Pounds. Ounces. Drachms. Grains.
Decigramme = 154.3402 = 0 0 2 34.3
Hectogramme = 1543.4023 = 0 3 1 43.4
Kilogramme = 15434.0234 — 2 8 1 14.
Myriagramme = 154340.2344 — 26 9 4 20.

3670.—The French Metre, or Unity of Length, at tempera-
ture of 32 deg. Cel. = 39.371 Eng. inch, at 62 deg. Fah.

The French Litre, or Unity of Capacity, at same temperature,
= 61.028 Eng. cubic inches.

The French Gramme, or Unity of Weights, at same tempera-
ture, = 15.434 Eng. Troy grs.

E
et
ae se
s
.
ae
BS

INDEX.

A. : Pace
Pace | Apparatus for Decomposition of Wa-
Absorptiometer, Bunsen’s......-.-- WOE ies sas attk wer peowd 248
Absorption Tubes......-......---- 108 s for Distilling Water, etc.-.. 69
OG RTAOTONB Soo i oa we eden s 6 es Miirrle’s. .... .237
ieee SU Os Bocas teas. 2a 7-8 aoe Wloeiicisy ae heat 73, 75
WC ATIONR os ics 5 Sov w'e ues os 96, 97 “ “ Electric Measurement, 83, 240
af sy with stopcock....-... 97 “Gas Analysis... ...: 238, 239
Ne Pe TE SO i at atn hia oo qe aloe wi Ps 8 Be Ar ROMA 8 as ROE s
oA MCRRUPOR ces a x 5g De cota 8,9 ‘ “ Hinrich’s Phy sion ck co 229
Acidimeter .....-- ach S SMe k an See R “ “ Hoffman’s Chemistry... 232
Adapters, various............-.- 9, 10 “ “ Hydraulics and Hydrosta-
Ainesion Piases: 2 .1i5<..0ss cle. 244 tics. 42
ROGGE CONIBTR oi ois cnn ncn scenes “ « Tustra’ ng « Mariott’s Law. y248 -

Pe PERS... oo a to ck oy kee OO
POU Fo ee oe he

MN rw bis oreo a bss xs 10
Air Drying Baths....-. Assia Pid wchie d 71
ie MINOR ois, ba wk o's gina Sibi ea 30 AO
RMN ane B Ss wie aih,o Sine kom 10
UMA sib cen nbn piu t hag 144
Alcoholometers.............---- 10, 11
Alembies, Glass. . FOLD aaa ween a bien 2 Ee
Porcelain 6.05035 e 11
re PINETON fos ee itate kee 12
e Stoneware.:. ...:.-.2-..12
MEMO GOERS ay acres owe he
PUTIDA SSE a 5 haters e tne ery 5 187
Aneroid Barometers......-.---.-- 19
Amneaiing Cups 2. os sen scs 3 soe 14
MONG oc ik Swe ta phe wokns weys. aS
Aphlogistic Lamps te aco men Sa aaie 14
Apparatus for Agricult. See 220
** Arsenic detection.... 14
e AMSAT. ode eas cb iges 225
ed ‘« Barker’s Chemistry . . 217
3 ‘“ Beginners in “ -214
Ad | Blowpipe Analysis. 226
A 227
iy 4 ae qualitative. 228
ve of «quantitative .229

fs Bunsen’s, for various pur-
ROGGE i et og pee 238

AE for Carbonic Acid deter-
minations, various... 12,:13
te for Carbonic Acid deter-
minations,inboneblack 7
« - & Chlorine Gas Genera-
PA ee eka ee Gs uk 45, 46
$89 for a ‘Course of Lectures. 017

** Tnfluence “ot Pressure at

Boiling Point...........241
Ae MS Magnetism =. oto. ce ase 243
Sc ONAN ICR... SoS ek ek 244
+e eh Medical Teste 22... ec2 222
“ “Miners and Engineers... .223
“ “ Nitrogen, deter mination

after. Dumas ey bee wy ee 238

** Nitrogen, preparation by
Chlorine and Ammonia-.238

‘‘ Nitrous-oxide, prepara-
ROH: OF Wve. ékabea tae 238
Ber kt AIORO: ois we steels Sa aie 244
“ “Organic Analysis........ 246
‘* “ Oxydation of the Soda
Rime cas ees or) 245
Ti)? PRORADAUROR Soo) Lng ade ss 247

“showing the principle of
the Reverbal Balance. . .244
“ “Schools and Academies. .215
showing the Spheroidal state
Of LAGUIOS 0 sk ead
‘ for Steele’s Chemistry...... 216
‘« “ Stockhardt’s Chemistry ..224
“ “Students and Colleges. . .224

ELLA * Qualitative Chem-
ical sets... 221, 231

oat * Quantitative Chem-
icalsets..... . 230

‘“ Sugar and Syrup An’lysis, 248
** Sulphur Determination by
COIOTING e665 oe oe cs 238
“ “Sulphuric Acid Manufac-
SR oe od eases siden
“ “Upward and Downward
FPOGRNTO So u's Vevene 4a AO

352 ; INDEX.
PAGE \ Pack
Apparatus for Urinary Deposits by Biot’s Hemisphere......2... 2.22.
Qualitative Analysis .. 221} Black’s Blowpipe.-..-.........-... 25
“ “Urine Analysis, Flint’s Black Lead Crucibles.... 2.2.2... - 157
Jmetnoa? = Use st 220 | Blarilete: ics: J Soetiaos heb bcaes 24
* “Volumetric Analysis of Bladder and Hand Glass......-.-. 111
CPIM. Sis boca es ewes 221 “Ki: .' PMOOG Lhe a amie wes tad « 24
* “© Volumetric Chemical An- Blast Attachments for Blowpipe.. 24
BYR ee eee et eee 2I9) fh arene, geo dos id ee
< “ Water Analysis.......... 248; ‘ Furnaces for Gas....... 100, 101
«Mineral Water Analysis..248! ‘‘ Lamps, Gas................
“« “ Water and Carbonic Acid 15 OD, SAIOONOL (cnr a 121
in the Air, determination 248 | Blood Circulating Apparatus. .-. -. 24
* Wilson’s Chemistry ceo 2161 Blow pipes 2.5.30 foe ea 26
Archimedes Principles: soins Sue 242 : Compounds. 20.24 500% 25
BOTS ot yes 242 by Oxshpariol 7 id ca 25
Argand Gas Burners.......-...... 35 Blowpipe Apparatus: . oo... tee ene: 227
a Spirit Lampi.se ia ese 121 Pissks oto ee See
APAenic Fiatee to. eal 14 = PRVIES ssi eee tee oe 24
PN k OR ak b's tea ieee be teed 15.| Boards for pressing Gas-bags- ...- 104
ABWIPAGONS ooo! ek Ck ee ce ee | Onl Te GIASE: CO ee ae 148
RUOUNBONS oi neues cee Ne eeu 15). Bologna Flasks 25\. soe seeds sR
Atropia Bottles... 5.25035 Sos ae 151 Bolt Heads) ooo ak os 27
Atwood’s Falling Machine........ 244 | Bolt Head Experiments. .......--. 39
August’s Psychrometer..........-.116| Borchard’s Electric Machine... -.. 73
Bottles, Acid. en eee eee
B. ChieorMmesiscss Bete e ees 30
Balances. o00)4 0.2 odes se cae AG, AT i Cobalt: 320s ener ees re
Balling’s Hydrometer... .........113 - Calereg 5.0 ocd cca ee ee 22
: Sacharometer...--...--- 114 e PAROE os ewe oe ee 30
Bedloons 63326 Cee Ts. goa 19 . GAS hoe Sars ee Noe eae
Balloon and Jar... 2's 2... ce oss 46 “s Packing, narrow and wide
Bell Ont Hing re eset et 241 WOW 05 Gea oes eR ee
Barker’s Chemistry, BAG cose Cea ey 217 Glass stoppered, narrow
“ MAP oo Uses aes 242 moun cs ec eee 29
BATOM Clore oo ek es ec ee ae oi Glass stoppered, with wide
Barometer Apparatus Rte ane aes 248 month. so-cusahexawes 28
” a WDOS Gb ois, id ons eee 19 4 Reagent: cea ease 29
Baskets, Lead 335205 Sides ee. 19 ee Sample. ciove sy ces. 28
% Sitaining vi. i 7c. cde a eh a Seperatory ....°'s 952 42. . 30
(DMB, CITING FS oo eee eens wakes 71 - Tubulated at Foot....... 30
Batteries, Electric... ............. 80 i" with Vitrified Labels. Pies 29
Beakers . . Jig th Cinch Dail eat 21, 22 Wonit'aio swede ae eo: 31
Beale’s Quie k Filter.............. 22] Bottle Brushes...... |... ray eM Se 33
Beaumé’s Hydrometers Hae en ies 113 Wt CADE cca easy oheR ea ne ees 3
s Sacharometer.........- 114 BE DB a pare ea oe ae 31
Beanfay Cracibles....5.25 9... 2.26 57:1 BaReR, LVOTY 2s oo reas aun 32
Becker’s Balances....:..-....--.. 16 tN SOR DOTS we okks Went we has 32
i A OTROS Cds bites otek es 7 bE ST RPARNOR Oe FeV a cs cats 3l
Bee-hive Shelves... .....0.... 4.2 22 “fs Paatepoara ins. ist 5s. ence 8 32
Bella; lection wisi eee es 76 a. POLCOHUT oc aes cet 32
TCT eager nk oe eas 22, 23, 24 Bomba 2605545545 ones hada eee 32
Dek in Vane casos ewe 39| Bradley’s Apparatus for Electric
BOUOWS: : k5 oot tas bowen ess 24| Measurement. Ciba evden wisnaae
Berzelins’ Apparatus for Carbonic Browning’s Electric Lamp... . isacow
Acid determination ............. 12 “ Spectroscope......-.- 160
Berzelius’ Beakers. ... 2.32.2 .isee. 21) Brishes; ACG 40) ues eee ag 7
‘ Blow pipe: sce Tasos. 25 66) Batboth2 92a coewelccwns 33
oe Filtering Paper....-...- 91 “Camels Haar. ssa. cos. aes be
e Gap’ Bote x50 ots ot 105 (61) Peak TUDO cous aan ne ta eter
Bichromate Batteries............. 814 Bubble Pipes, .s s.cu tee wens ee . 33
Binding Clamps: 625.5206 Get 241 Bulb: Tibes 20... cap ewinee ces 64s 33
BE BORIS oe Seas ene 24) Bullion: Scales i. .-s15--Cdee ecu esas LO
Bink’s Burettes.............-.--.- 33 Hutton (oS nas dans ate eae ieee sone

INDEX. RAD

PAGE PaGE

Bunsen’ s Absorptiometer.......-..- 6 | Capsules, Platinum ............... 40
Absorption Tubes... .108, 109 a“ POreei ein co. is fe as S48

i Apparatus for obtaining os BIPVORS Suse eats pied ae en 40

' pure Hydrogen Gas. ...239| Carbon Points............2....... 41

ae Apparatus for obtaining RE OCDE Ss Sioa not ps bata pape eee se 41
pure Oxhydrogen gas-.239 | Carbonic Acid, condensed......... 41

44 Apparatus for determina- ff} Generator........- 4l
tion of Carbonic Acid.. 13} Carbon Cells..-.......2......2-.. 43
Barometer: 655 eos PP OMEROUS Shae he ee ote 42

( PCE eS EOS ts oy 80 | Carre’s Dielectric Machine... .....164

f Burner Tips for flat flame, 39 “ Air Pump 5S dan sort ae

Ae Blast Gas Lamp. ........ 36 Os hOO PPCOLEE iui Sven tiet oss L1G

aS “Attachment ....... 24 . Bs WOE 6:s'o4 650 116

- ‘ Blowpipe.... ...... ROT AIOTINS OV OR! ini bees SoG sc bes eee

ie PUEORIE Se aro cea es oo | Carthesian Imps; ... 2.665. eens 42

= Burner Jets........-2..- 120 | Cartier’s Aleoholometers......-... 11

ee CSROIOUE ios Ge Oh oh aS eens At ROCRBOROMNR Go i boss 2 ee eat works 42

e Cuatthcc: civ ape AD CAnsolettes.. ics coc ce Cae laa ae

- Chlorine Absorbing Ap- RA MAIR S65 ook ke aed oe oka 43
DATRUUE.. 25 vias cases 40 | Caustic Holders. uc... oo o6e6 hk. 43

sf NY fie) BR Pe ASAI IS, FOCOUS ss oie oc etek chee eS

“3 Eudiometer.-:...-.:-..5.- 85 Centre of Gravity ...:.. 2.2... 22%. 244

s Gas. Taubes: 2. 05. 3.2. a 109 | Centimeter Measures......-....-. 43

Af Gasometer, Mercurial... ..108) Centrifugal Forces ......-........244

. Gas Regulator.......--... 108 | Chameleon Burettes...........--- 34

ff Hot Air Bath:.......... 72|Chamott Furnaces......... .-. 99

“ Meter for Gas.... ....--.108| Chandler’s qualitative chemical set, 231

oo Photometer :. 2... 3... .. 139 x quantitative ‘ « "930

“f PiCheOG gs ka ts oS. es 1417 Charédal Borers cvss 6s con Se ee 43

- Quick Filtering Appara- S BIOIGETS 6. os 6a 3'o:s ced eee
URES Sawa tes goin set 89 ¢ RI ICOE cb mie ik’ wey ns Sime

‘ if uf “ complete. .249 rs WE Slash ls pi Si ee 43
Burettes, Mohr’s, Bink’s, Gay Lus- " CEA YE: SRinapy Grae oer er «
sac’s, Geissler’s, Rammelsburg’s, " PMAORA bs ig Seka aie ewe. ae
Chameleon, etc.............-.33,.34 ns POWMIS oi wus alevewoues 44
Burette Clamps............-..... 34| Chardin’s Filtering eee inka 91
Ԥ PMO es oe iw oad Cady 34 | Charts. - (eaweews 46.

€ PIO op uh owe ba lanes OF Chemicals, List of: oo aa aaa
ONG sc cc oes aes 5 458, 36, 37, 38 | Chevalier Cremometer . Seeiieewcece fee
Burner Attachments.......-...-.. 36 | Chilton’s Furnace... .............102
Ct OREM, cc sau paleo we doe oo as OTS MENGS 5c See eco aa Swen 46, 47

aS SOP RROOE icin < soe s Swewe ss oy -Circular Magnets... 6.2) .2-.- sence 243
TP IGUON yo sa iaGoy anak Seer ss ae ISOS for Ingots. . ib ise dec con's 44
DAB ak 5 oe AS Hd Kid Sess ae Chloride of Calcium Jars....... .. 44
Tubes, flat ends..........- 39 a Tubes.... ..) 44
MARRIOHOLD soo dae vps masa ws 39 4, of 4 “with bulbs. 45
Bursting Squares.............-..- 39] Uhlorine Bottles... 2... 260.8. eee 30
ae Distilling Apparatus, .... 46

; . TAOURE cocks ssid alan sikide wo 46

AMS IONOINNR. 605 Zul dks taps o5 eh Oe ‘¢ Gas Apparatus.......... 46
CORINETOR ooo Soe Ot ween ec ok 40 Clamps, DINGS sites kk Corowa es 24
Caoutchouc RS eo us woe te 39 PONS os eas oa Sh wae 47
AO ec ro CV nuaew ec 39 Us WV OOUEIL ccs 6 = pn bes ¥eiel lane 47

Capillary TORN Se ease 39 efor Watch Glasses.... ...- 47
2 RUMORS cut exces deus wep 40 " is Craig’s ..... 47

ff PUAN ook” ache ee wales oy 40 os at * Hoffman’s .. 47
Caps for Bell Jars, Gas Bags, etc.. 40 = ‘f 3 Mohr’s .. ... 47
Re OE AER EIOUBS oss dias Brine So 55 AGT Clare a HOROEh soe acl vs oss dewe 151
“Porcelain, for lamp chimney. 40} Clay Cylinders.... ...-......----. 227
Capsules. . Ciialastes seve ates <a. 40) Clips for Watch Glasses: 5,253. ~2.. 47
Of Mote ii outa a: 40 | Cobalt Bottles..........-......-.- 47

” OL ENG Ue Coc erenus sauce’ ‘’ Glass Plates. .........--... 49

~ MIEN ia. asd so niost Gabe 129 | Coddington Lenses..........-...- 124

254 - INDEX.
PAGE PAGE
Cottee Machines, Prepon occ tues 43) Cork Knives. Seek GN an bee cae oe ean ee
’ German re UENe:S 48.1-°°%: Pressera; OF Iron. aas cae 56
Coils for Induction.......:... 0/26... 78] Ye Pressers; Of Steers oon 2305. 56
AIOIDIMIOES 6 on ees hae ae ceed e 161)“, Squeezers .. 5. - ie wnaes Sopce 56
Collections of Apparatus. ......-- Dag i DO Ses ee Se ee 56
of Artificial Gems........--. 48| Cotton Wick ........-.-cseeeeeee- 124
‘of Crown Diamonds... .....- 48 Covers, Glass, Convex: jo. 35. esc 56
“of Crystalographic Models... 48 Oo Pasa Suan eae 56
‘* of Specimens for Spectral An- as ‘« square, ground ....- 56
VRB cei mde 48 ey ‘* with hole in the side
‘* of Nitrogen, Simpson’s Appar- and center........
AGUS ROM cues oles sees ke ee 4 ‘e+ With knob 22sec. 2 <a
Collision Balle: ious Ge os 4D ‘Microscopic sq’rs and circles, 57
Collodion Balloons........---...- 19 Craig’s Watch Glass Clamps...-.. 47
Colored: Glasses ooo. S So te 49 | Cremomoeter's: 52.2 52. Vceyek wane 57
sf Glass -Plates.<.. 2... 05.552 49 | Crown Barner yes se ah owes 38
Color Tests, on Porcelain slab..... 49} Cr ucibles, A SR8 Vs Sous oss Sak noe 7:
Columbia College qualitative Blow- Beanlay sous yaseeenkicwes 57
THUG, HOb osc. ews ca Shu ow wares 228 f Ferdi eu oda cay weed nis 58
Columbia College quantitative -. .229 Biscuit Ware..........- 59
Combustion Boats........-.------ 49 $ Cant Iron o207 5-75 ee es 58
e BUICK hoe ce Mea ae ag COVOYS cok Cae ee oes ce 57
as Foils, of Copper...-..-..- 51 % Hessian or Sand....-...- 59
i Furnace, Bunsen’s Gas.. 49 3 TtOn sn xe secs tebe 57
e Liebig’sCharcoal.. 49; =“ Metallurgists...... ....- 59
<s ‘‘ Storer’s Gas....... 49 es Moinsert 3603. ee 58
ui sO" Prenth oc. <7 cunee Oe fe Pletinain. su cers 59
cs $§*“fo¥ Coal Ok. 22. s.<. 50 So PRADA: bwe ca dae one 57
a Supporter <5 sige see ee Poreclaats cos. Scis none 59
4 Pate eid pone so 30 sas oe § Roasting i. ss 0s ins tae 60
Commutators or Current changes. - 51 é: SUVAR Sotho we ccna 59
POM PAenes oust a ae eee Crucible MOUS a oo rs ae 60
Pompound: Barus... |= seen aS 52 OF ROO. s Foes 136
4 BIOWDING ce fucwesiee 5s 25 A ‘* — of Boxwood... . -.136
Condensers.c2 0) og Se Oe 7 Sapporte. wae 60
Condensing Tubes ......-.---..--. 53 re "LOM GS. 36s ose os ceemee es 170
“id Chamber . .. 22. 220/252 53 Tubes for reduction..... 59
ss COylinderi. >. sages: 03:) Cryopherus 3 ul 5 os ets ie os ee 60
2; PURI oooh sous xs 144 | Crystals, Models of...... 2.2... .-: 48
Conduction of Heat downwards, Crystal Drainers...... ....-. eo aioe 60
Apparatus for icc iasce Sees 54 | Cr ystallizing Dishes :i26¢5 sco 60
Conductometer -...°.--. 5... 2 54 Kettle vss, cas 120
Gone; Dissected 24522 SS ices et 54 | Cubic Centimeter Flasks.......... 125
ito OF Platinum i. 2-2 05-2. 3s BRT Capelt co a oe a eee 61
Conical Beakers.... 0. S206... ee 22 | Capel Parnaees. .. ck. sense euu 99
“ Test Glasses. cosa wad pec LOT jo A. older nsw tae tee aes 61.
Connecting Limbs......-.----..-. 54} “ Moulds, of Brass........-...61
se PUDOE poo Foe wie ews De es FS ss of Steels. pees 61
Connectors of Brass.......-..-..54, 55 | Cupping Glasses....-. ...... ....- 61
A Gallows Screw......--- 55} Cups, Annealing ...... .........-- 61
y of Ru bbier.ic-c o.oo es 65) 5°). Wetding Cache su eodaes 61
Cooper’s Mercurial Gas Receiver.. 55} “ Medicine..........2........ 61
Copper Foils. . cise few wi ena sen ORT EC ORO UR, «on ena etaas pee 43
So CAIRNE oe No isk cae aen se 109} 2S: Beidlitz. Powder Js.54.5. - sce 61
(6° ;Bheet, ois ass Se oe wees. OU] UPD e POM... ste anes 62
oF i WWAVO <6 2 ska eile” Loew OW a Odd O [OUVODIOR be Gad atone agen epeeeee 62
“Water Baths...-.....---.-177 Cylinders, Glasaioo00. leche 62
Corks, Champagne.... -.-....-.-. 55] ‘ Graduated Cubic inches..... 63
AS 4) OROMHOR gins < ding ie aes ee ewe Dera “into ‘ Centimeters. 63
>) SRUDDEE No o2 ARS ae Sete oe ere fe SE GRAMS 5 os eee 63
SES DOME Ss 32.0% UR a oe eee ee oh SO GAME oe a as 63
Cork Borers........-..-.......... 55] “ for Electric Machine .... .... 64
MS BURR 66 cows Sebeonweed te eta toe

INDEX. 255
PAGE PaGE
Distilling Retorts, Copper........-152
Dancing Images....- feckbbesuces 76 Glug... 26525. 151
‘Dancing Plates. .....6.<65. > Rican TO “i os BRU os co ye 152
Daniel’s Battery .... 2.2.2. ..----- 80 a ? TOME. wot cews 152
AS FAV ETOMObEH 5. evan «nos 116 % Stone Ware....152
ef DINO ois esa baw ate PO Aaa OLE oe te es Seen as 243
Day and Night Thermometer...... 64 | Deebereiner’s Hydrogen Lamp. .--- 70
Davy’s Safety PADS og ceca co 64) sume; Foreblaim [oo % v5 5s ce ese 70
Decanting Jars: < occ. sess <3. GA eG OOO ARON 5 S35 is vawepige eee 70
Sets NPIS OR SO ogee nso Sts 64 | Douceleur Apparatus.......--.-.- 244
¥ PUR Sa soe bo aeneens BET MOUR 26 ooo aids 64%s05% occas” OO
Decimal Scales, Centimeters..--.-. 43 | Drawing Curves. ..2..- 2.0. sss--- - 71
Decoction Mortars ..... .....-... 135 e PYOLEACtOrs «3%. 5 Sac. eee ee
Decomposition Water Apparatus..248 |} Drawing Tools...............---. 70
Decrepitating Iron Spoon..--.-.-..- 159 | Dropping Bottles...... ...... 2... 7
Deflagrating COVE oa Soren 64 ite MMR onhca as ko cea eee 71
I rad cine 65 hil SA ROR Sec oto ua ao Se bes 71
- GHODES oo ais es 2 OF Be beth TERM ee a cs oie eae 71
5 Hooks: 2 o03% 2. 5.5255 GS LarUeIne ML os oe pain sas 72
- SORA Vor ces es 23 Drummond Lamps for Petroleum.. 71
oe BROODS So esos ene 64 Ga fs 123 »
“ Stands fo ce 64 Drying Apparatus... Sess oka 65
+ Taper Holder ......- 65 Baths, Copper... ...)...... 71
Dentists’ Furnace............100, 101 ss “Porcelain Regulator 71
Descroizille’s Alkalimeter.....---. ease “Electrical Regulator 72
BOEING eo Ok yo wles gos > ws es So Soe xr POMROB si oi. ick bw ace Cue 72
Dessicating Apparatus Ree eee aot og ae de te Rai eae Sauee 72
Fresenius... 66 vs ‘¢ Rammelsburg’s ....-- 72
a RUNS seers ons 71 " RUOR S65 ek saa elec eh eee
a OV OHE oe ose e es 72 a PR MOR Eo. san ae eolowty 72
= PANS. oc ay as.” BO * Mr ceMOUIE B x cape os yates 72
« AASB a8 hs Oaks See's 66 - ‘< Mitscherlisch ....... 72
Dessicator, SIA oon Fs oe okt 65 | Duboscq’s Lamp .... 2222. .... 2.0. . 82
WORMUER.. cous > wet 65 ‘ Spectroscope ......-...- “245
G Schrotter’s ..-2...2.. 6. Gh euieh Metal ios. so oo. oe ek 72
NOME OH Se ees ae ak G61 yer e Clots ic soos Beast ae Ue
Diamonds for Cutting Glass....-.- DO IIE FOUR fies 0S sais Bede ay cess xoeee 42
writing on. coil 0. 66
Mist dor hoch 76
4 Maal fost 48 | Farthern. Dishes ...522.. 2... 002 See 67
a MOrteis =o 4.3545 sue 5 s5...66} Eason’s: Hygrodeik.. 2.2 ca... 242
Dielectric Machine.... ...-...-... 75 Electrical Apparatus. We diet oats 73
Differential Thermometers, plain.. 66 Batteries... 2... ....2-: 82, 80
e ‘* with stopcock nA WOMB Seve Sues Wace bee ee
connecting. 66 : CVURGOrein. .setrnk oan os 64
Diffusion of Gases, Apparatus for.. 85 i Pog Stand oc wa. wee ses 76
Digestors, various. .......-.-..... 67 " Pier ee 7
BR is or be a ch nue Sin one ote 67 Si AD in wie cs ah ewe Wace 82
Dipping MGULOTIOS. .. So. 45. Wcu sa. 81 oe Machines ....-. pe wanives 74:
BONION cise eeu cu 67 a RPPOPY ec ek chee 77
Dischargers, Electrical various.... 76 " PEMCS Wu wagicg Saucceacde ao
Dishes, Draining --...-..$..... 2... 68 i RAOUL Ss Sele Gwe c aba: Does 77
oat SPE MOET x8 542 <a ewe gains 67 ¥ PUES etre a okk wae oes 24]
SOC AIOTE Fe Sieg aul cinta pleats uie'e 67 e PROPESMAN ois a. 77
Ti hE ORNL sci soe hao ees 67 of EOE one eda Cad 76
Boe RUE a Sag ow> ov ae wae 68 se SM MOR Sok tony eee ones 78
Displacement, Apparatus. Jivoes68, 69 i Vacuum Tubes. ......-- 79
Dissected Cone........-...- .....244/| Electric Fire Damp Indicator... - 111
Distilling Apparatus.-..........--.- 69 ‘* Measurement Apparatus ..240
" $ OITIG. oS 2.5 237 2. ROTI cise So otka So asehoes 78
“ as ENON Fos Saige 6) | Electro Magnet on stand to lift
a ee Wurtz... 35... 70}. “Heavy Weights .:2-...2..0.. 2... 243
$ Flasks: 3.22... o- +... <,69:| Electro Magnet, PRIG 6 ooo 78

Be INDEX.

PAGE

Electrometer Gold Leaf.......-... 75
= POis seed ese wh ne bee 76

ra Pith BRL teat 75

+ Thompson’s, for Elec-

tric Measurement......- 2.5.5... 83
BileCtromiorne © i665 hee eke tis
Elliptical Roller.....--.-.-------. 241
Elutriating peeer sty Lcnee ene cd 83
Enamel .. Bcd satteece Saree oc haa
Enamelers. File. oes 85
2 IVHMD:. cowace p oat anne . 8d

“ PIAIOR pi ek cathe eee 85
PNAGNGRE 62.5 Oh ie Sake eden sO
Eolipile OR NGS 52 sao a ERE ES 85
Lamp, Brass....:.....- 85

" Wi aa de Uk ee ee 85
SODTOU POUIOG oo od lac een kGe ees 167
Equilibrium Tubes......-. 242

Erdmann’s Apparatus for the de-

termination of Carbonic Acid.... 13
Mramann oF 1OR0. coins co sutewe owes 34
Erlenmeyer’s Oven...... ....-....103
Ettling’s Pipette..........-... bn ek
ether Bottles joy go ee a 30

“ — Distilling Apparatus.....---. 85

‘« Extraction Apparatus, Bo-
RipMiate SoS at cache cae ieee 8&5
Ether Extr’tion Apparatus, Mohr’s 139

Re Mn chieis grad Win hip hae wb ee te 85
Endiometers, Bunsen’s..---...---- 85
Eudiometer, PIOUIMAIVS. oc s oa 86

URW Bos adc giana 86
Evaporating Dishes, ieee cos 87

Iron

Platinum.... 87

. vs Porcelain... . 87
- “f Silver....... 87
e o> BOM cast as 87
4s French ..... 88
3) 2 Meissen ..-.. 87
. ‘“ Thuringian .. 88
" * Gold Washing 88
" TEOUOB ow inn kame S 89
TOPO BONS. ba wi ws os Peewenter ews s 89
PN MOOS, sy Lack hae aed alkene’ 89
Evolation -FPlagk..... oo.) ce doupees 89
EUSBIGCALORS 2). sca sadn cau cass eetase
F,

F'Oraday’s O08 vaio ccrelnisn ac bass 120
* Neve sc is cs A ks 151
. Washing Bottles.....--- 177
Files, Enamelers........-..0..-..- 89
BA NN Ee oe a 89
FUG FIANTIOR Skee re awake 89
Baling Tiber. 64.465 66a ee eee wae 98
Filtering Apparatus, Beale’s. ....-- 89
Bunsen’s .... 89
es * Copper.....- 89
ss r ‘ Plantamour’s 89

“6 “

Porcelain.... 89
ene Apparatus, Bell, Glass and
Slab’.

ee eee ee ee ee ee

PAGE

Filter, Oalige.So iis ie swen we Os cnet 90
OdNGte FS oly baat 56

+S <) Deyer? ok ee ee Oe

Os > RONGGE AE oO Peas aie gn 91

Oy OD ees pt eee ig A ae ee 91
RDB sg se av eee oe 91
Stade ots cuit e eee ee s 164
Filtering Flagks co. ce eu taee an 91
Filters, Foleo eee ot
‘French Grey. ese EN OR

% “6 White 2s ae 91
Filtering Paper, Chardin. ..\.0.2.¢: 91
he PONCH eck eg + OL

is S< retwnen £2 Poe 92

= $6 TU WOGISD, (esc uc 92
Finger Tips, Rabber. 2052 75-0152. 92
Fire Claysccsc nn Syiraba cco wae ape 92
“ \ Damp: dndicdters. ss oor. co 118
H “Safety Lamps... ....-: 64
6" SUVibRe 72.35 Sea etnes 92
Fittings,. Various... 220. 223) oats 9F
Fiaiméless Lamp oo s2.¢ 342 So ee 14
Flasks, Bohemian ...............-- 92
66. SDOMO QUID 55N5 cos ca Peas 93
arenes 25 fo bee ee 93

a with tubulature on the neck 93

sf - bulb 93

- ie See ae hissc ae canes 94

8 SS BR SS asad dap clase bd eat
Se ORB CCC OLA Say oe ere ois ae

i DAGPO oases S28 Coy eas 125

Bs ORV BON vat San es wee shew eee 107

Flints Urine Analysis Apparatus

fOPs Soo eo a Sas a ee 225,
Float, Erdmann’s..).. 2250-5622. 34°

Florence Pigg 33 as se eb coca 93.

Florentine Receivers..............150

Fett: Copper s2ccl st aiesn a pene dee 51

$0) Platinum cass oh Se ectees 143.

Foot, Hares. ses beds wc ew ere ene 227

Forceps, Drage sco evks ace Shea fare 94

Bending. sas, 2 gas aes 95.

a Cutting 2s 0seece ba ees 95.

J ewelers y higke ocean ya 94

“4 Steel ooo 2 aes eis ey eee

a Sinha. ce a . 94

af German Silver..........- 95

“ Wate ake x5 as ee ee

Forks for Gas Burners..........-- 38
Fossils. - a igted te wale Ae Shs

Fountain in Vacuo. ee cig eee ae! wake

Formation of Water in Vacuo...-. - 95

Fractional Distillation of Water.. 70

Frames icc ic a5 ie ee ee

Freiburg Hammers.......--------111

Freezing in Vacuo......--..---.-- 9

Fresenius’ Acidimeter...........-- 6

a Arsenic Detection .. meas Gh |

i. Apparatus for Carbonic
Acid in Carbonates..........-.. 12
Fresenius Chlorine Distillation... 46

‘< Dessicating Apparatus. . 66
‘¢ Hot Air Bath..-....-.... 7z

i INDEX. | 25%

PAGE

Fresenius’ Filter Support......... 164
a epee Ped esa etn 4 hits pc Whe oo «= 96
; . HOHOMIAD Oo. soc bc ck on ews 96

* — Quick Filtering, Bunsen’s. 96
Pree MRS ce ee iS ane OO

tke ENA. Ss nin ea ae 4 gin 8 os 96
ef SOVIET Se Seek eek eee 96
‘“‘.. Porcelain Safety ..-.-.-... 98
f " Perforated ...... 98
v s FOU see ccs 96
? a Percolating ..... 98
e Gutta. Percha. 325.603 -5.. 99
Bs Gutta Percha. Conical. .... 99
‘Gutta Percha, Spherical .. 99
_ PLASUNGT Bah oes oe ups wes lh 227
. Separating Conical. ...... 97
* «Globe Shape... 97
Funnel Tubes, Conical........---- 97
i SE RON? oe oes 97
a ‘¢ Welter’s Safety.... 97
sé be bk 4c eta 98
“y ‘¢ ~Mitscherlisech...... 98
Piet: PAMIDORUS: oe 54. ea eic ema n ue 164
Furnaces, Braman’ ss55..00. 3.5.5 99
Potestain.? iso Sea: 99
ne TOW GIAM oo oe oe inks SE a 161
$f + ROPORORO oc sebsces 161
CRW pee iia bdes br aes 99
ne PMG oo ot. ee ce. ~ ae
ss OUIOUIN GS 52 oe 4s ead ee 99
af MAMIO 2 oo kc cot. -...-.100
“ss French Crown....-.-.-. 101
A MATER ce Ce Cac ee kk 99
‘4 nee oe ee cy AOL
<4 rN 8 ce ok ra ee ae 100
A eR eae oot 102
4 pneniaers oo) fo .0 ce 102
‘f Peat ae oo Se 102
Af Tar eg ee ees 103
“ MPiOnmMeyer 2.65. 3c e 103
“$ Brniget s-ose e te oe 103
us Combustion 2.2.2) ...2.: 103
G.

ATARI AINIAG OT oot Se rg 103
REAR Ss Soa 2 e's gab oe 104
Galvanometers, Astatic..........-. 77
“ Sensitive... 2.7205. . 77
aes Tangent:.2 2.2.22 5. 77
% Galvanic Batteries.:....:..2...... 80

. Decomposing Cell, Bun-
MONO old, aie oo a ey 239

Galvanic Decomposing Cells, Hoff-
NM i Ne a aes up ek mcs 233
Gas aoe Apparatus. ..-...:... 238
MOC CLR co loath. oad Cake hens 104
oP RNEEO eet nae ack oak eo cate 27
¢ : MER Ne ec ter Ty Ea Ch he 105
PION iackeel cosuns . leks 25
EY MOROR cb oc os ncse ns wa eee's 24
it MAPEMIE. Sc lGs’ foc cts becuse t's 37
err RR et aa eS i os fe 94
Pras AERA ee oc we 101

PaGE
Gas Generator, Kipp’s--........-. 106
7 Hydrogen Generator, Copper. . 106
$5 Glass . . . . 107
“ Sulphuretted Generator. 106, 107
PAP OR YC ENO PEM Stee yon 107
Pe RRR Ts cg Se kel, rac eibiig CA ae 64
e Holders, Pepy’s.of Zinc....... 107
i } Copper ._-.. 107
rs “for Oxygen and Hydro-
BPO hia e hoe aks bee ees 108
BM FMPR oe eit es AL ad ee 23
OMB Sa ee os ce sae Sia Ge 119
Te OOD Cathe un pe ten ook 108
Gasometer, Bunsen’s Merenrial -...108
Gas Regulation Burner ..........- 108
bye MI ERUNDOT. S269 kk Gs wine Snie'e 108
cl RIBBON Hs Soe ok kiaccd ee ban bos 108
Ds SADE ROE a ies ode ok bane cs 108
Se EPObLS,- bOI BC oi 52 os SEE 108
Gassiot Cascade...... ..---.-..--- 244
CTR MOR ei oy corde a ive Ui 5 bane Soh) 108
Gas, Washing Apparatus.......--- 109
Gasogenes Reese Lene ala Solas wae a oie 109
PERETO CL UDOS po oo6 0. eee 109
Gauge Ring and Ball..-......--.-. 211
Gay Lussac Alcoholometer .--..---. il
“ty ‘\ *), Alkalimeter, 02.2. 64. 13
° 627 SA PORDOR nus se SSG 33
‘ g Supports......- -.-..-165
Geissler Burettes .......-. ...... 33, 34
uf PRO eo. et. aa 78, 79
as Apparatus. for the deter-
mination of Carbonic Acid...... 12
Geissler Potash Bulbs. ........-... 147
+> Glass Stopcock....0.. 2.2 160
Geological Hammer..........-.--.-111
a Specimens .........-.2.206
Gibbs’ Thermometer Tubes.... ..-. 173
Glass Blowpipes - - PRR Foie i,
Blowers Table....--. ..----- 109
et A OMMACIROUE 8s oii ss a we ee 52
‘“* ends for Burettes............ 109 ’
Ae RMN carer h NS Ag oe oe aay 110’
sf Plates, ground 3c OY
o “ inch thick....109
af “tf Colored:iiic cs: ep lait 109
PRN tak oO CU ON Cs wk es 110
VPM tise Goo! i ne dks 110
Fi MUIR ORR eo evr e eahs a 160
De RI erate / Ga Uae Soa 174
Globes of Glass for Deflagrating. ..64
COVER: GROG 2005s Sel 110
Goniometers, RABMPSo0S U eee c 110
as GORMan o.oo 110
> Wollaston’s.. ......-110
Graduate Glasses ...........0-... 110

Graduates, Glass Minims, English .110
F German. 111

English BUADO i606“) 111
French shape......... 111
Tumbler shape -......111
Gradustad ere ana 13, 33, 34, 63, 64,
85, 86, 103, 125, ge 141, ete.

‘

fe

Bitar cot ut Poa oo:

258 YN DEX.
PAGE PAGE
Graduates, Porcelain ....... ...--. Ali Batacias. a Gakuin themes s hae beak
Grain Weights.... .....-.-.....-.179 | Hydraulics, Apparatus fee es
Gramme Weights............-.-.- 179 | Hydrogen Generator.............. 107
Griffin’s Blast Gas Burner. ...-.... 87 rs PIBGON ek wade ceo Coats .108
* Furnace ....... 101 % Gas Holders............108 |
iS? BORKOM oss hoe bec a ee ‘¢ Gas, Bunsen’s Apparatus for 239
reves Battery -o6 6 eek ot 80 “Gas Lamps a HG sete SK Rea eae 70
A OR eee ca dak ben's cme 180 | Hydrometers .-..2........ 113. 114, 115
‘Guinea and Feather Tube....._--. 247 | Hydrometer Jars.....-... 118, 117, 118
Guibourg’s Displacement Apparatus 69 | Hydrometer, Nicholson’s...... ..-- 115
‘Gundlach’s Microscope...--..-.-..-- 128 | Hydrostatic Balance............. -248
Gutta Percha PUNO. oe eta cess 99 # PrORR o e oees 247
Measures ....... -...- 127 | Hygrodeik, Edson’s........ 2... .. .242
IFYVONCOPON: sso te ce ona downs Cas 244 Hygrometers, August’s Psychrom’. r 116
"Daniel's. 116
H. cy Mason ’6 330.5. 5 ses 116
; Saussure’s. 22.0.0... 116
PABINMNGTS 6S CE a cha weed oe 11
rr BlOwW PING. c «3 sou epee ene 111 rE
af Geological. ..2.2... s6e6<t 111)
eo Mineralogical .......-.--- 111 | Ice Freezer, Carré’s. x. 2. cee st 116
a Piptiner Aes seven se aawees 111. f Hofinian’s 3.0. oels us 116
<.' Watebmakers’ <2... ... 3. 111 | Ignition Tubes....-.- .116
a WSs cle ae Cee biee 177 Illustration of Weights and Pulleys 244
Mena se esc es aces pdeaeieune 111 | Imps. Sib Mies Gebel s Sc eee eee
hd GUBNG oe i caiace a tee oe 111 | Inclined Planés;s 320.6 ce 244
Harcourt’s Ivory Seale......-.---- 116 | Indicator of Fire Damp........ ..-116
Hardness of Mineral Tests..--..-- 211 | Induction Coils .= 0. coe cess 78
Hare’s Gallows Screw Connector.. 55) Indigo Prism ...... 2.2.2.2... ---..- 147
Hauys’ Goniometers. ....-. ....-.- 110 | Inertia . Apparatus .................. 244
RIOR OE TBE Ck ue deen kdon nets 73> | Infosion Jars... o/s 3 en sense boot 118
Heat, Apparatus for./.... .......- 241 | Inorganie Chemistry Apparatus. . .217
Helix Contracting......-..-...--.- 77 | Ingot Moulds v7. ences ian pan eke
Hs ‘on Stand .ecec.-.ce-ccecedss 771 Insulated Stoow.0. 5 ee a 76
“ with ring armature......-- - 77 | Illuminating Fgg Stand........... 76
Hemisphere, Biota tetra aves 76}. lmages, Danting’.; os.) case cen 76
" Magdeburg.-.... --.- 247.) Tron Gadlg oS. occ en- tee ee a eee 117
Hessian Crucibles.... <6 k sek) A i Blowpipe Spoon ane mnie anne ee
Pibbe’ PUuriaces ue we coe ve cepeke 100 | Ivory c's sated axe
SRY. 38 PERE TRO Sonn he icin whe a seein 136
Hiero’s Fountain...:.. ......-.s+- 76
Hinrich’s Physics ...'s52. 2 sae. 229 | J ars, Anatomical... 5.4: es <5 cnet 119°
Hoffman’s Apparatus, various, 232, 233, Battery, plain .. 2.022. 20.3 -.-H7
234, 235}. es Vhote®@. och went ee
Hoffman’s Supports.......---.---- 164; ‘“ Chloride of Calcium......... 44
As Watch Glass Clamps.... 47} ‘ Cold Cream Porcelain........ 117
be Holders for Flasks...... 164] -“" Conserve. iio. oxa cate ae wks xen 117
- Flame Apparatus. ..-.--. 945," ** Decanting v.28 5s. gat veaceae 64,
Holders for Burettes......-.-.- 162,163] ‘ Hydrometer, boxwood feet-. .117
oS 5» So CMURG. Gi tas ae sees AIZ Ee. S - glass feet, swelled top.117
‘Sop Oraci DIOk. 2 se oy pease» Aik ie 3** “ * with ring
fe... EGERTON os se nins he < de 164| around the neck.........2.. -..- 118
‘* for Platinum Spoons and J ars, Hydrometer, glass feet, lipped be |
WUD. ig ecw icew a eds ob betes 112 Thfasion: 62565 others)
Holders for Pipettes..-........-.-- 163.) 3: SS) SD ROCR 2S ios oa Deb aereee 118
dy Mitscherlisch’s.... ...---- 164 bo: Deyn. oc See eee ee 118
6 BHehorts oc aes ok ees ee 165 i Mercary cc vaccinia eae eke ee 118
” Test PADS bei) ho one 38s 164) ‘* Ointment, Of “Gage o.oo cies 118
e for Salts in Lamp Flames.159| - “ Porcelain ......... 118
Holsteric Barometer...-.. ---.---- PAS) ” . knobbed, 119
Holtz’s Electric Machine... ....... 73} ‘' Powder, of Porcelain ........ 118
Hot Water Fannel cei co cba 89 "Preparation: 255. aesawneh : 19
Hooks Deflagrating.........------ 644.2 Bpeenk: 128 Oe aes vee ae

INDEX. | 209
PAGE PaGE
Jets, Hydrogen..... sp hha Ale walp 119 | Leaning Tower.............- woes 244
Wash Bottle: ....-...........119 | Léclanche’s Battery............-. 80
‘ Bunsen Burner, flat tlame....120| Leech Tubes....-... 2... .2..--222124
‘“ to produce a blast .........-.-120 te SOOO S <<0 ss pices ted a cncedas SOU
MP EMOP TOUTE So cin wane be auteolg Be 120 Lenses, Coadiiiton SU wees Wanye eee 124
ME OUIRY Bac in oe aa en's ows ose 120 Horn Settings 0. Spices 124
wJawelers’ ‘Globes ....2. .2-.-...s.-- 120 * Magiily ings is oo. awa oe 124
PUIG LUDGS. Jig vee ons aececene ce --1o0 me Staninene,:. o: -55's we bas 124
ss Photographic .............125
K. . Watchmakers’ ............ 125
Memp’s Regulator... . ...4. sees. 71 i Convex and Concave, ete.125
mut Pe MINACCS Os co. cose 99 | Leslie’s Alkalimeter..-... --...... 18
Dp ROR ss Pa ek! wages sene teu e Differential Thermometers. 66
Kettles, Porcelain.........--.--.-.120 € Freezing Apparatus. ...... 95
Kipp’s ‘Apparatus for Sulphuretted aS Graduated Cylinder....... 63
ER oo oy ate ee eae 105 $$ RAUB GOR i ras oe oes 241
Kipp’s Apparatus for the determin- Leyden WEEE Pees ie Pea Seas ew oe 118
ation of Carbonic Acid.......-.. 12 ““ movable coatings, -... 76
Knife for Blow pipe =. os... csicce = 120 _ SL DBA. as oaks ae Oe
Re oo GCUPNRICOTK : 6. tis sv cae’ 120 | Liebig’s alte aide for Organic An-
ere he TIO os wine's 358 120 alysis . . pipiens twee |
Liebig’s Aspirator. Be Nabe nites Siete 15
& * Charcoal Furnace for Com-
Tels, Blank, 38360 io oes 2). ad Bt. MEENA 15 Uo cd ao ae sab ane codes 49
fs @homial:. 2.6 os. sl cos 120 | Liebig’s Condensers.... ....-.---.. 52
Label Book, Mawson’s.... -----..- 120 e Devying Tubes <. 65.0" 3. 55 < 72
Sctimicters’. 5 f-fs00 6 a 114 *s Gas Bottle... 222525 <3. 0S
Lactoscope, Vogel’s eas Noite gas 120 . Potash Bulb..............147
DUNE ROME ae elas hs or eo ke ono 121 y Retort, double Tube...... 151
Py Le ICTR. sa. one wes sn aves 5 12] sé Safety Limb..... 2... 222. 125
MARE O a coe or bean Hole cee 121 | Lippincott’s Vapor Index.......... 77
Lamps, PU OIGR? boca ots we eas 122 | Limb, Drying, Liebig’ Sn uiea ee cawe 54
Bunsen’s Gas... > 6c. Soc. Bo | 2 F ’ Safety See be eae 125
“ Alcohol, on tripod ee See 121 | Light, Refraction of............-. 125
* Aphlogistic Pua es ew euse 14| ‘ Recomposition of........ 125
WS DAVY S OALOLY:= 55 055s". 5355 64 | Litmus Paper, various colors... . 25135
“ Drummond, for Coal Oil.... 71 | Litre Bottles Poles oe yo 125
ff Drummond, areca de Bees 123 |)" Flasks, various... .... cee wee e120
Bet UCL LG 20 is ciniwk ag kes Gu s.ne Sad | LAOBERUONO Soins ok oe ocean ow 2 O44
Sc MOUSAVCNS. <...%-.. <2. --.-123 | Lubin’s Cassolettes.... 2... 2. eee 43
y Flameless lei aew tees svat : ; Luminous Plate...... Wenileskseavel ee
PORAOOS occas sade cna bees
a REO DOS is neds suceape ween 37 M.
Pt SReTOMOR si sos ckcan suas 70 | Machines for Coffee making....... 48
* ry. digie Aa hees ace eh 123 | Magic Lanterns... ...... .... -....- 125
‘ 7 iS sé bc 1 ‘
ee ek Chote
Se RUA TAINO 2a fale oe ae os sls 123 | Magdeburg Hemisphere...-.-..-... 247
- Be, haacne ste e 121} Magnesium Ribbon and Wire..... 127
attner’s Blowpipe- ..---- 123 a Pp Site eee 123
“ ia. “Alcohol Blast: -- ast tae Neate S ‘Stand Fo a7
ussian Alcohol Blast. .-... 5 . eedle on Stand.......--
Spirit, EAN nn ses cuwk 121, 122 GOT POUE ss Ol yrcs Sab oodn acces 127
as Saag edeuasiaeeSecery's os a aoe Apparatus ee 243
PEOUGS Pee i cee e sinedaes he agnets, OCG uuarihas vsntebieess 127
fe eet ga Satan's whale eis So Scie awed Una ed 127
. ROME Ucn ob die cia cha diane ONION Sid nue Vode: cawwe- eee
Lang’s Alcohol Lamp..--...--..--. 121 A OOLRO Nase bcewaen covet 243
tend, RRR dia ales pk n's 6 bes Ou 19 7 wroreesnoe. se fale 2 oo 127
“ “Measures ....-..----. Ses wath 127 4s ROCOlVine 3... bees Kees 243
Oe SOWIE UN cubase oie cea Aeus Cade 15% " on Stand...-.. i Siege ON 243
Oe RN Wiehe Sak ninle's om. Seu She cote 124 #3 with Wheel ‘rmature-..244
Ao MR oc acas cae e oe -eee-eeee-118 | Magneto-Electric Machine.. ..126, 127

260 INDEX.

PAGE Pagi .
Magnifying Lenses.......--.. -.-- 124 | Mitscherlich’s Polarization Appara-
Marchand’s U Drying Tubes-....-..44 UB ond Coe hee

Mariotte’s Laws, Apparatus .-.-. ..-127

Marsh’s Arsenic Test a eee ies Chae 14
Mason’s Hygrometer:-........--.- 116
Matirassea ca oS ese Rte ee 127
Mawaon’s.Uabele: 2. i ea 120
Measures, ASBAVERS. Sooo cosas sess 2 127
CHasa oe Sci cc kt ee

“A Gutta Percha ee ee an ae 127

‘8 Graduated: 2 Aso ee: 110

ef £080 ss a ORS 127

a MGttG se Sea ree 128

242 Poétéeelain. Seton ee 127
Measuring Bottles..--......-.-- 125, 129
a Crlndera. ocr ees

ae Pisses oes ee ee os
Mechanical Powers... 22.202. 5.22% 244
Medical Tests, Apparatus for... -... 222
Melting Furnaces... 24. S.02..0%. 100
Mendelsohn’s Burners... ..-...---- 38
Mer reury DOtGles. Ais saws coos Bens 127
8 BO 55 ES et ore ae

- Jar, Glass...
se ‘“ Porcelain...

sina Wie Bie ae
ace. coed:

5 BOW o5 nos Coe deeb ce 128 & ¥ Gas Apparatus... . 46

Wrough..cc-cey evict 127 ‘¢ --Clamps::5..- ea ee
Mercurial Receiver... 2.2.25... 127 “ Distilling Apparatus. bees 46.

Metallic Plates for Dancing Figures 76 OE Ae aa SE eae Oe ah it 237
SOs NOYANOMO ee es 26s dove 166 ‘¢. Perenlators..,<obecia- ahu<s 139

of. SP ermmometerese syoc5Gs6 169 ‘Us PIMGDCOGE 24.0 Soave pape ket 140
Meétre Measures... 2... 5.256. eee 128 a6 so APADOREOR oy un cans Sawa cee eS ay:

Microscopes, Aplanatic....-.....-- 125 t-:) Potash: Bulbes 35s ee ate 147

McCullough’s Manual. .......-.... 10 | Monochromatic Light Apparatus. .133

Microchemical Flasks ............ 12 |Mordaunted Cloth.......-.-.----- - 132
“ Fannels.<.:. 4... ..¢.:, 06: Mortars, Agate. i050. ivewens due ects 134

os Retores (02.044 uBR * TiaAMOnG:s 638 awa son see 66

. Watch Glass Heaters 38 s Pmiulsion joc. scteccw ess 135
Microscopes, EMIGO ia Re Ee 128 . (JIABK 5. cus Sas eeerereeek 135
POBROS 650 da x. ie eb 124 ¢ SPOS Cae ores ures 135

malE soi Vi avew cee aee RS Mixing 323.434. 3a shor wee

oe Millar Sees EPO ee - Porcelain..:\vsecnabeawnote 135
Microscopic Covers........ - 129 - Powder 2x3. Gaeoc lees 135
% Dishes, Glass (No. 1436). 22 e a RE ee

io BOB os sass Saeed 129 3 Wedgewood........-....- 136

Milk, Vissayers:... ics vee dase eae en Morton’s Monochromatic Lamp. ..-. 13:
Milk ‘Test, Optieal si: so odie ae, 120} Moulds, Boxwood.......... ..2.... 136
PEROT AIR i oe tr ae it ag 206 Braga 35.005 siwia seceoe ets 136
9 for Blowpipe reactions....210 rf Charedal.. 760 Sect teoas 136

4 Cabinets: 6600.53, 02 05350 78 if Crucible 224654 eee 136

_ Crystaline colors.... ..... 209 ef Cupel (forming) ....-...-- 136

+ for’ Cleavage 4 i s16.2.4 02.21 Tagot 2 ka eee
for Fusibility.. 22.2.2. 222. 211 r Steel (for cupelling) fies 136

+f for: Hartlpeat ss. 505 ero 211 $f for forming Square Blocks

Mineralogical Hammers..........- 112): Of ‘eliarcond. cir ik ieste a xanees 228
Mineralogists’ Slates.... ..........129| Moulds, Scorifier ........5.-2.-.-.. 136
Minim Glasses 2.525. cusvede easy 110 : Scorifying ..----..-.--.--- ‘1A
Mirrors, Convex and Concave... .. .245 a Supposicory. ..sceecss----- 136_
Misers Plate oo oe 129 Mouth Pieces, Horn. ...-. cian niece
Mitscherlich’s Apparatus for Arsenic ~ for Inhaling.... ---- 134
Detection .. - be pf y INOUS 30 Loe semanas 134
Mitscherlich’ 3 Drying Tubes.... .. 72 « & Wood..... fcdoene hy coe
Funnel Tubes...... 98 “e. “Blow Pipe. vk caissekbeaces tured

Ks Potash Bulbs..........147
Mixing Botéleg.i 3.3 ise s 455, cco see

‘* Capsules, brass 2.2/0. 2.5 22% 129
Ag a horns os¢ oa eee
oo: SOPR Si ven boss Sheets 129
Model showing motions of human
eye.. fe ns aa
Models of Crown Diamonds...._.. 48
< COL Crystalesc yo eote a ee
MS OE INYO Lica aioe hae es Gas 89
“of Precious Stones. ...----- 48
$6 Gi Maehinety: 52's oh eee 130 ©

‘of Mining Machinery and

Toole. ch roy Teen bee

«of Furnaces, &¢....... 131, 132

> OF Telegraph )o5 otccr ages 7

‘“ ‘Water-wheels, &¢....-..2. 133

5 OR oo eae 131

Mohr’s Alkalimeter..:.2.22-<i.0-2-: 13
‘““ Apparatus for determina-

tion of Carbonic Acid........... 12

Mohr’ s Burettes .
Chlorine Safety. Pipette .. . 46

. ee ,

So si

#fove s me Si oe ining ‘ r m
4 Sey Hania ne wae “oT a a, < er ee ee Pea Geese 7 ;
ie I Bina Nk i Nae TSS a Ne oi hl aE pt

INDEX. 261

Pace | PAGE

PMG POTNACES (copie ssenaeser- >. It E aper, JOBODIL. s céehcsedanenee oe 138
Mufiles, French Clay.-.-... 2.2136, "137 PaGROB SS ods ee hes chive he 138
Rey I OW Race an eats tates we 136 i NOMA +. Letetavdile secon 138

OT Pat OE cules rath a eee ou 136 D+ RMCIMBONY ona ve Raed pins ee c 138

AG TUTOR ia Ui ud weet nta Bea 136 Ee iy PROM ca alse al th eae as taal es 139
Mulder’s Absorption Meter. .....--133 Pe, CR AARIOD ME coral Sn dati kona 139
MAGES. AAU. oo. oh cabins boa ede 10 FOES shh tate abs oer dain gies a 139
“ CHRBA ces eo rUs hows « 137 | Parabolic Reflectors .... ......222. 139
TOR LOIN oe eer ost deere so Lease orting: Vlasks oo coc 0.08 2a. 5 DD
Munktell Filtering Paper....-..... Oy FenCus; Carbon ao di4 Soi wenst's cee 4l
Murrle’s, Apparatus ...........--.-- 237. preppy 8 Gus. Holder. eos ec ec. 107
PBT GOLAGOIN ak ao et ae kee

N, Periimne’ Bottles 4. uo oe 139

Needles} Astatic. !. 006.00 .25-- ~ ¢7| Permanganate Burettes......-.... 33
Needles, Dipping 20. 6) so... 5.224 Of] MOTTON Si EMIRACE, 6s wsdl done ceed 100
Oho S MAM BOUIG 54/04 vc awe 33.0 54.5 127 | Pestle’s,’ Porcelain. ...:.5 65.0342 o5% 139
Nicholson’s Hydrometers. ioe etenkes |e ROspOris- Apparatus ic. os. oves 64
Nipper Taps.-.-.. PGR PGs Se pO 140 Photographic RGB Sih 30s ok a Se
Maite Shells 065 oo) ec esh shi 137 eavetheeecs ie 3 62
PSCTOMON PULUG fists css ons Se ol ges 137 : PBUOD sais Surat ania 140
‘f PAHS Sia esis oa re kt 137 rt MARC 5 1 ae oa mi who ate 125

as IER aoe cit enw bee DELP UOWIMIENOTA ods CSN ae oe 139

* OS OM iil oto oe es cae Lr. |e MOLOMOLTIC DUINETS .. 6.524 fol. ee 139

eh Determination Apparatus 238 = ignAleB sy. '.6s's vosena on 139
Nitrous Oxide Gas Apparatus..... 137 PRBUOR 4 ou ataogacus 108
Noebel’s Silt Apparatus..........- BAT alt DORON ae ce ies 140
Narsing BMROD Woe cece «<5 wat eek RAMOS ke Oboe bs bebe ke idee 140
SO OTK BET t RIOR ey ae et es a Se 140

Re CS DOORS = Seco ss Sas Okie 137-7 banehcocks, Brass: i. ce. cea - 141

re Buysen’s oo oc. Ss 141

0. " PADMA Goats eee ake 140

Objects for Spectral Analysis, col- _ “ with Steel Spring 141
MOOR ey sc ats hE sea wo 48 “with Screw and Bent Lip 140
Oechsle’s Hydrometer....-...---.. 114 | Pinchcocks, Squibbs’.. .--...---.- 141
MEE ROC N OES. sa a ee ak 138 | Pipes for Hydrogen Bubbles....... 141
ee POLPOULOUETE e's sees sais ee eee ee POR APA RNS se oie ck cel ne eee
Fe RMN EO aa eee gs ce 123 Pipettes, SOMMAED 64 aS Cc tee ae 14]
“Drummond: Lamp... s...2... 2. 71 Ball or Cylindrical....... 141
Optical Apparatus................244 4 TPROPNE So a sc dala oe 141
Organic Analysis Apparatus ...... 246 . MOLDS sch chan ath eas oe 141
Omery, lectrical [54.25.28 cses 77 . E illing caren awa enete site 141
“ito 6 Acetimeter-.2c60 22.6... 6 6 ‘y Vinee rs cece 141
hs RLY OLOMEOCEE aa W255 ne 5 05's oo 113 - APLOMB Coin So bmn pedens 141
Oxhydrogen Blow-pipes ....-.----. SOT intr DICCtIIG 2004 62s oe eee ok 77
_ MMU atraie eg ote PR OM SMI ee Pea Nae te os 142

3 Bunsen’s Apparatus, for.239|} “ Ball Electrometer. .... ...-.-. 75
Cxyeon, etorts 2.2... c25 5.5 2. MPAA SC PMROM ci aan ls Soon Gas oT
Ozonometer, Sieman’s......-...-.. 138 PRIMES d stale ah seme nwbie cis 142
: Electricaliss3os 2.5 138 | Plantamour’s Funnel...........--- 87

Plate Electrical Machine ....-. .... 75

P. Plate, Rod Hook, and Check Screw . 142

Page’s Revolving Electro Magnet..138 Plates, MCABR Y oss oh ake seeing --- 142
** Rotating Apparatus.....-.-. 138 SIONBIC ABU G oi i ee 20'S send 66
ENO SS inibics 64's oe a alee pha sa'n ss 139 Oy iS ORC ae ia nc tha hile Slats 142
BRM AIOE 2 Ue eek awe oahes & 139 SEs ARNG ede Oe LS peau es 109
“, Dessicating .-....--...--... 65 - SOT OMOEA ni oa cia'a tate: -. 109
£0568 See POCOLatIMe s 0.56 es 6. 139 el AOC kos ou: ou old ode wipune 76
po MxOud Washing 3 0206 a. os 139 Pe ANON os eM oh ie ede a wei 77
NERO. LS Sele ary cicts sa Be 40 Mt Ee OTOPOGOE veo waies waaay abs 142

- Paper, Bibulous ......--- eee aes 138 Oo ERO tu OC bet at See 142
ee AMOUR S chacke batch ewe 92. Org OPO Wiaiine a cichinnen en eaee 76

Pee MOON oc dewcn Sy eeoeeccas 9) jp Piatinnm Boats . oc s.iece 4. 2c e's 142

“> Glazed ..... Nie OE amore 138 e¢ RIO VORS «sors cNaxiaibin sony 143

ae aD et ae RBS Eh hn:

262 INDEX.
, PAGE PaGE
Platinum Crucibles ...0...e0---:-- 143} Pumps, Hydraulic..............-.148
£§ Dishes. 55 2655555 segs 142 “ Bunsen’s Quick Filtering... 89
- End Forceps...-....---- 94 - for Fire Engine, Lllustra-
_ NG Tongs ots toe deus 142): ORS Soke cet cane cae eee
POR Ca Vener ens aoe 143} Pumps, Pneumatic.......:........246
as ONES Pua a aide aon yee sae 142} Punch ‘Stiek.< 351625 oat 5 coe
- Points ...... -.....---.-142| Pungents, Various.......... -- 148, 149
$ PROBS ee eS tones 143| Pyramid Filter Case Japanned...: 91
BORAD. 45. pote rence: 142) Pyromietets.\2 50 ccsts va eee See
a Mpoatulas .< wcte sce cose 1421 -Pyle’s: Manual. .5 soccer ses vapee ee
‘ SPOU ROS stb 2S lh oe ae bs 142
As BDORGY 35 7st ses eee 199 Q.
if Spoons t355; Fh 3s ee 142} Qualitative and Quantitative Sets.227
a BADR soc. a nk Seep ea oe 142| Qualitative Blow-pipe Sets ....-.. 22s.
* WIG: 7p inion VeaeGeen 143] Qualitative Chemical Set of Appa-
Plattner’s Apparatus for Blow-pipe FALE. Sus Glia seas -221
DROGR oo Sasi be SP aaa wes 227| Qualitative Chemical Analysis, Stu-
Pilatiner’s Blow-pipes «....-. 65. 22. 26) >-dents Sete. 5 ons cece 231
: Crucible Moulds........ 60) Quetschhahne.. 2.2... 22.73. -5 140, 141
a Charcoal Borer....-..-- 43| Quick Filtering Apparatus.....--. 89
rf Porcelain Capsules --... 41) Quilled Receivers: .< 22s. Voces 150
3 Mixing Capsule ......-.- 129! Quantitative Urinary Analysis. ...221
% ROBKE t..N4 a ake wee kp see 152 Blow-pipe Set; ..---. -- 29
- DIOVOR Coss ee stan haes 156 = Chemical Students Set.23¢
“ REVANRIO LL hiens Seentia ease 172. Quevenne’s Cremometer.... ...--- 57
PAROS og a c's 6 0 ie tain, Sait oor <
Plumbago Crucibles and Covers... 58 R.
Pneumatic Apparatus 3.30.56 ves ks 247| Radiator, Leslies ....-. - ior ka coe c uae 149
as Cistern .........:......143| Rammelsberg’s Burette ....-..2... 34
. Pumps, various .. ..143, 144 y Hot Air Bath...... 72
s Troughs, various ..-.-- LAS) Rasps 22. 05 Sees en gees 149
Pocket Compasses -.....;.-.-...--% 62) Reagents, ‘list. of 225. ...e3jas5 une -183
PoORIONS FITS: CLAY. 355 os | Noes SS ene f Reagent Boks 255 ¢ sob eagcwen ee lee
PolaTISOUPO 6 3455 Se 06 Ts cet ee 176 ‘* “with Blow-pipe-.... 149
Polarization Apparatus...... - 145, 146 ‘ Chesten score tees -149
Pompdes Gigas'’. 426s once weks 146 Receivers, Florentine . cle watts Beene
" POrcelany ss is secs eee lle Earthen Ware ....-.-. -151
POTOUD CBDR ova Sn wawucssas Sunes 43 " Porcelain)... c0cseneean ed 151
POTOUs TIBOR < s3cces aMceeie kes cease 143 E Plain 53 oes oe eta 149
Porter's Deassicstor .o5236.cetkee Ss 65 | e Ouilletsc. oe ee 150
Potash Bulbs, various........----. 147 = Tubulfted... ooo... s-ks3 150:
$2 PID BULES ipod nos salle svnax ees 147 e Tubulated & Stoppered.150
Powder Scoope v2.5 ssi c6¢ ae oes 155 f: Tubulature at the side .150
Pi: 5 OOMB lun. sie gauge deus 157 s with Rod, Hook & Ball.247
Prat-Dumas’ Filtering Paper...-.. 91 | Reduction Tubes:: 23:4 .2 06505050 151
Precipitating Glasses...........--- 147 {Reflectors 36650 eubei ee 139

Preparation Glasses, Flat Bottom. .147
** “Round Bottom. 173

“ “Jars, Various. ..119
Pressure Boards for Gas "Bags Ser 8 104
Prince Rupert Drops. -.....:......153
Prisus, ACTOMBNG icc nene eos 148

Ms Mounted....-... 245
% for Dark Chamber..-.-..-. 147
ey Equilateral << e.it as 148
$ re Mounted ..... 245
F HOM OW 5 Sacre bale t eawu iad 147
as Hf (DOCMIO cond cans wane 147

sig Print Glase. 5 oo Sse oo Bee

% Nicol’s.. Fi ce de
Prool Giaaeee oc ios oaks ee ae ees 148
Paleo Giasste. io. se SA
PUMPS, LOKCIIG soi og Jace ks se oeineehee

“ses eweee

Relative Value of va and
Measures . 250

Relative Value of. “Troy "French
Weighigysss sega a Cuane ake. 250
Retorts, Clark's 20s osus otat se settee 151
CODPOR 5 accross ees pase 152
sf double bulb in the neck ..151
rf nS tHBO 65 See ats 151
e Faraday’so. 0s. 5-. nt - 02 kok
rs PPOR ie Voss wane eee eee 152
es Michrochemical ..........152
i Tied osc enadaeonn 152
i Piain'. isha cy yee 15]

. Platinum .... sow tee Aamo
Relative value, French Metre , Litre,

and Gramme +o. .53 cewek edews ee eOU.

Retorts, Porcelain...........-....--152

INDEX. 263

PAGE Page

Retorts, Tubulated and See SOOTOr TOURS 54 tics Sh wcebteaee 171
Of ARMOR COR S CU awe eke woe en e'y 151 | Scorifying Moulds................ 155
Retorts, Stoneware........--.----- 152 | Scratch Brushes.....-2..-. .....-.-- 155
# PMMON chk eal wek ene sey 96 ot ARPES WIPO dese t ovens 155

se NNORIS ois Loo 8 cde so 165° Screen for Tripod... 220.6002 .502. 155
Revolving Electro Magnet.... -.-.. 78 | Screws, Brass head.........-..-2.. 155
Reverberatory Furnaces...... ---- 100 | Sefatrom’s Forge): : f...6i.se5. nce 241
Riders of Aluminum...........--- 152 | Seidlitz Powder Cups....-.-....-...155
Riess’ Electrical Condenser. ....... 53 Separ. ating BOLMORS, Cosel ess 30
Rings, Concentric...........¢-..-.152 Purtiels . ¢...'. 22-5 060%
ee PIE ccs ake sc ouekw acne se T6l: | Bete OF SOuds. oooh eS ie ee cee 244
Roasting SRALCOGN (Coa cecal es <tc 152} “ of Apparatus, various.214, to 231
is Pst ye do Sis 153 | Serrin’s Lamps 2 c.5. ee ee fo OS

as UN eo it eS ee wee 152 | Shades Glass, Lily...........--.-- 155
manets, Father 6.5.5. oo. oe e's 152 | Sharpeners for Knives............. 155
Rods of Glass, Electric.........--- 158 | Shellbach’s Support.......-.-..... 165
ev AI ARE ia 5 ........153 |} Sieves, Bolting Cloth.............156
Rod of Shellac, Electric..........-153 Se ey GPIB. a4 voices anice 156
moens, Sbirring 2.5 ke. . - 160 Os SM EOS al do ow cage bae + nals VO
Rose’s Burners... -- -- -- Si pias aS i SRORBOSNORE 26 3. a vides sn 5's ake
Rose’s Crystallographic Models.... 48 Psp ASO ROIS Wino on dae, hee ake
Rubber WEE Fin ce ase nee kie 153 eo Buk,: by Laws aig's'o as x Raa
Finger oe Sa eee ated 153 | Sieman’s Ozonometer.. ..... ..--. --138

" Gloveks 2c . 6c 2. ete 410 | Bilicated Pilter, <0 660225 2. 88

“ ° Sheet ......---.-.---.-.--153 | Sillimann’s Chlorine Gas Apparatus 46

o MPODTIOLB odes uc has eee ee hOo
E Syphon Primers....-.....153
i TISINGIG. <6 -vSencds aes os aukve
iupmicori 8 Coils 2.2652. 23 6522.4 78
BOR ICONS oo) ecw tacw ee we 153
Russian Spirit Lamps ....-......-.-154
S.
Saccharimeters.......- Siete 145, 146
Saccharometers ...... ...-.. .--.--114
peateuy Funnels 0.) 005. ee OF
DMTOUY CaBIND 90% owe ass See se cease 64
Nallerons Alembic... -2 .25.:..s.2.. 12
IEINRATN tr SE Oe le eaeaune ee 154
PTR TAUIRIODS isco ic ces eet e's 38
Sand Baths, various .-.-..-...-... 154
oe PEPER DIOS oS oeck es 5 Soe 3s 59
“Glasses, various .... ...-....-154
Saussure’s Hygrometers. ...--.--.-116
Saw.to Cut Charcoal:.......-..... 154
Scales, Apothecaries .....-..-....-- 154
EUs wae wdk cae che oe es 154
fi Preseription >... --- +. <- 154, 155
MMOS 5 oo ec Saeko
Scheibler’ MEDOTALUB Oy oc seksi: oe
Colorimeter ..... ----- 39
Bohuster’s Dropping Glasses....... 71
Schulze Silt Apparatus..---....... 83
Scissors, ordinary... ....-----------155
Bot. < PEMOINIONA ss 5 wine os 2 cc se LOO

Schrotter’s Apparatus for Analysis

EEPDUUNUOR sus eee ete. ks ogee 1
see >» Dessieator.. -....5..0... 65
SBeoups, of horn. : 3.20. 22 -).. 2-155
Scorifiers, VOTE Sook ise sa'eg 3s LOD
Urn shape.....---------155

Scetifier Holders, of Tron..........155
TRS BROMIGRE On ca knees Sees Sam 136

.

Silver Assay, wet way Stopcocks..160
‘¢ Pure, for Mineral Tests... ..156

eS Capsules minds ee mic ib ueeeeate 40

StF A EOLIDIOD on ince sun wae hin he Bis 59
Simpson’s Nitrogen Bulb.......-.. 49
MIR TOBA. isk boc os hacky ee oe
BP OUPO UIT choos 5. dnlnvce eee
pimnee’s Dattery... 2.505.225 2253 3. BP
a ORS Sansa ek bs wa oa
Smelling Bottles: . 2... --.-.-.../2.149
Soda Paper PE Sot Ra ein oa 156
** Cartridge Mould....... 136

‘< - Water Apparatus haieels kak 156
Mra SOO. oo sd es eS eta 156
“Flame Apparatus......... 156
Soils, Analysis Apparatus........- 83

Svleil-Ventschke’s Saccharimeter. .145

Soufflets - - Sa ete eaeage ne Ake a
Spatulas Boe. coo ee he, 156
POR ich kee aa Se 157

ef CSTR se re ake ean

oF BVOEY 5 Coe US wag ae 156
POMS COG Seco ee Pee

ny ERR So orate ee eee 157

sf POrcelaiti's Soc6ec. ees 157

+ Steel, various...... 22... 157
Specific Gravity Balances......- 16, 17
e Bottles. - Jie

s “ aS in cases. ..158

4 - MigSks a ose oe 158

Spectra of Stars & Metals on Charts 45

2 Spectroscope, Brownings hand ....158

two prisms. 158

. Heidelburg....... ..158
Spectroscopic Chiart 45s 2. ea cen ao
Lamps for Alcohol. .159

. Gas... .159

Standss oo se Ie

264 INDEX.

Spectroscopic Raber Mitéoher:
JIC RC ka wee

Spectroscopic Salts, in pate hee ae:
Spectrum, Lantern for showing on
sereens . 2... Goce ig ea sr oe
Spirit Lamps, Various o/s cess esos 122
Spiral or Spotted Tube-.-......---.159

Spoons for Blowpipe....-.....-..-159
BOVE ss Sok Sei Seager cies

AS ES BBR. ett ah a eka wa Cae
“ Desert-- fee eae ee
- Dipping, of of Glass... .... -.159
i RROED Beg Pea eae
RS Oa ts sere Sie ars hale 159
tint UE GOGH. ela phe ihc who ree
fe UR Os 5 atta ie
it~“ POreelain oc. Se
“Tea, of Glass and Porcelain 159
a er PN tS RR 159
Sprengel’s Mercurial Pump.......- 143
Squibb’s Pinchcocks.-.......2.--.- 141
Stanhope Lenses... .-..2.22.5.06 5-5 124

Steamtight Determ’tn Apparatus.235
Sticks for breaking Glass, of Coal .. 159

Stille. of Copper.) eos eee 160
Stirrers, ‘of Glass. oo eS oe 168
Stockhardt’s Chemistry set ........224
Stool, Insulating ..-. Stic WB aks ROO
Stopcocks, Brass, various. ...160, 161
e Earthenware, various. . 160

St. Claire de Ville Combustion Fur-
nace. Pid sa eee

Stopcocks, Glass, v ‘arious - 160, 161
Silver wet w ay Assay. .160

Stoppers, Rubber. oat -.153
Storer’s Combustion Furnaces. Seats 49
Storin Geidsses 3s os heist el
Raoves, Gide. os oO ..161
es Kerosene... Sit .-161
Straining Baskets, Earthenware. .161
Af a Porcelain . .-161
Dishes MN a EES Was 161
S Plates, Earthenware.....161
Straw Rings.. a Ce pet
Students Qualitative ‘Chemical set. 231
- Quantitative “ -230
Stable Porteps. kee eis sues 94
Streak of Mineral Tests...........129
Students Chemical Set.......-....- 224
Saction Tubes 22 fp ceel eh Ss a8
Sulphuretted Hydrogen Gas Appar-
EMBs kot os ate Puvelee 105, 106, 107
Sulphuric Acid Apparatus. ..--- 9

“Testing Apparatus. 233

Suppor £9; Burette 2 ded nia6se es 162, 163
‘Crucible. ...-... Mace AGA

Pe PU * sc viesen te dede was 164

$8 Fonnel 2 cette eas 164

m GREG OA eee 164

sf Hoftman’6. cece: 163, 164

r BECO Se od ae MB oeee 165

¥ Tat Tae coe at ood 164, 165

_ Japanned for Flasks... -- 165

| Supports, Mitscherlisch, for Exam-
elie Heese -164

Page

ination before the Spectroscope. - 164

Supports, Fresenius.) 32. -...555 0. 364

PAO ic. ee eh ea 164

8 Gay Lussac’s.:-22.....2. 165,

oo ROU PROD nue ses ea be 165
Swedish Filtering Paper.......... 92
BWIMIMENS oso asda walndion ase 34
Syphon, AGi@ut 23 We oe at 9
SGlas8 plains eens ee

A Pipettesy 220 oo. ees 166
Syringes, Fire, Ot GHABR C526 it pneu 166
‘f Glass, BERGE oie oy ch ck 166

A Metallic... 2.550.202. cane 166

T

Table &tipports 2053 soe 3h 164
Tables for Glass Blowers...-..-.--- 109
Tanks for holding Solutions...--. 166
Pantalus Cup 2. 6 5s 166
Tapers to burn in Oxygen...--.-- 166
Oa WOE ee wipe cee wale a eee 166
Yeats, Of Cork . 20.5 ee ae
POLOSBODO 65:0 5 Sys Se ed eae ee 166
wellurigh 225.72.) ieee pe ieee 166
Telegraph Working Model.-....-- 78
* Clock Work....-. --..- 78
Tests,-Blowpipe. +. 2... 22.5.2: 226, 227
Test Cheste 6 aoa bik oe ae he 149
Dishee ooo Sordi eeamen 167

‘* Glasses, conical... /...--.=- 167

& Microchemical - .... .167
Lead. Measure ../ 62.25. ec. 167
a8 Sieve ni olh Le ee

Be DCR Soe ee Bs 216
“ -Marsh’s Arsenic? i358 54555 167
3 PROP wc ue a ak pinky diet pin es ee 167
$6.) SOLEMN Ges Sts ees 183 to 205
‘“ Spoon with Spatula....... -. 157
tf Tubes, Bohentian: <3: :.045< 22468
s French and German. ..167
ve s itl NOSE 6s es tio ook Cae 167
sf ON TOOUK ose eas ech 167
“": Stloppered sa eacds 168
a OS RPO RTO ES eo a es ae
a ‘* Holders, Brass.:....-. 168
- Ke ‘a AV IPRS eros: 168
a ss “ Wont ee 168
¥ CS EPDOPEG Ue cae oe 165
Testing Slaba:..caspvstakew ewes 168
Theatre Pantin 2 Sen eseF tee 168
Thermo-Electric Paws ste ek 168
s Pues ibibo sewers 168
Ther mometers, BRIM BEV Sr he oe ce 168
COP SAS tee ae ke
e Centigrade ....... - 168
Chemital) 75.327 168
vi Day and Night....169 |
A Differential .......-. 169
- Fahrenheit......-. 169
“6 Howse ss eae 169
66 Medical 53.6 Seas: 769
é Metallte .¢iics. yi 169

INDEX. 265

PAGE |
ai Thermometer s, Sugar House.....-- 169 |
: Window.:.....-.-- 169 |
"f Milk Glass Scale... .169.
FEes Milk Scale...-..... 169,
s POR Ve as iie ws: 168 |
e KReaiiar. wet ccc se. 169 |
Thermometer Tubes...-.....---.- 169
MOOR os Selig ee pests gas Dob a's 169
Thompson’s Electrometer.....-.-- 83)
MPOUNGCK, PLOUSS W236. SS Se ies 170 |
PON ORR Je gots os searches ose os .170
PROP IMULE is do Vnic abd. sd... oe k70
Tongs, at eee A 170
SoCs ed ccxessusee 170)
Se REGO. Wisield'e coe cw Vn ncn aies 170 |
SOUPOE oy ass Sane. s hess 171 |
Galvanized Iron... ses = 3% 171 |
ii MAOPIRAD: MLLVON: 5 acs os - Sons 170 |
er ORIN 56s Je tg ae gli wigs goss 170 |
ov: PACK LOIZOO ee oni SU es oe 170) |
DPE Soe aga eek Sees nto gia 170 |
Tools for Blowpiping .-..-.-.--.--- 227 |
Torricellian Experiment.-.....-.... 171 |
NRO OOO Lt Ss Lua es 171.
Pegs, POrcelain : . . 6.6 5. see een e 171 |
RA eM os oor ba ee ee 171 |
Wt ONG OME Gass «ck clog ccwle sees) b 172 |
BME OO 20 4S Se ote s hones oa: 172 |
Triangles, Hleowpipe: «62% 2.VS.5: 172 |
SWING ais we oe oN aves 172
As POLCOMAL 5456s ae dae
a PN IEG rio Asc awere ae de 172
Trimming Hammers.......-...---- 111
Tripods, MOR Eos lh eee n tba ec ene 172
a BRON i Sika tee ec orn lie 172
Galvanized Iron......-.... 172
P Wrought OE EOE ian 172
SPA GA MOTCULY 5 avec eseecs ince e bo
of Combustion. .... 2.5.2... 51
Tubes, MRD Ut Dai eae Se oar 15
Chloride of Calcium....... 45
Pe eCOMUUMON ¢ os oe se 51
ie CORRGNAINM 45/0. sass, «58
Pi ee@AMOCUUL 6 2.65 55266. ty 54
EMRE i. cat. wel canes 173
eT ME oe os Ss a a god ns ss 72
Os ga PO SEE ae aR a a ea 98
MMS ES hus AGE ceca pu ase 108
te, POIOMIOE Oo ses chs ~ sane ee 78
WEED UL eh co< so eo a tun oe 120
“ Liebig’s Condensing. ...... 173
“for Musical Sounds........173
‘- Phosphorescent...2-... 2... 173
pee OMEN 2s Co ord See. 173
Pa PATA’ IOCETIC. . ... 2.6 be 173
Be Se ee Ot ond a wae gas 173
eS AC GRE NEES, SPR IE Sei anp 173
Pre Say NSU ULM y Sy ess vee cee 173
“ _U, with Draining Tube..-..- 173
“6 4 “ “cc “ and
PRECOCK 22 oe ds. sige arniee « 178
Pubes, Specimen...... Cee an hee 173
NPCS as oc cees seve ceca lS

PAGE
Tubes, Vogel’s Seigcive Opa cate b bible oP 174
tubing Barometer oo .c60 es Scie 174
* Bohemian cori. so ws5 Sees 474
Capillary. ccc. swess se oe pes 174
CSOLORCM Sue ee kaw Bale ee 174
: COmpiSblONG. Beta sccd Seas 174
<4 BAECS is opewak Ub wees 176
f PTORGIK akc sae soe 174
+ EGO OL Leh ee ee 174
+ LOB 5 Sake ee kos eee oes
3.0 Me OPCGlaa cus Sot ee ee paws 176
id Thermometers oic 60585 176
Rubber, Black.... 2.2. 2... 176
¢ Vuleanized. isons ee ck 176
SREMCNO E ONOM iE is 27.2 oo ce 176
Twaddle’s Hydrometers. ........-- 115
Rwines fais fos he ae weather a aoe 176
U. ;
| Universal Furnace...........-...-. 102
Hydrometer... 2.2. 6s6.. 114
Universal Supports, Wood. ...2..165
‘or Ronibh bs 2.5200
\ paiced States Custom House Alco-
MOIOINGLOPE Lo kes sn ae haces 10
Upeast and Downcast Draught
Model UM tes ogres: a kay el wk armas 176
Ure’s -Almalimeter... ooo ssc eek 13
“* @~Budiometer 2. 0..5..5 52280536586
CO PPARIN SOL MAIO oa oS ote ee a oe 176
a MOOR ies non canbe 176
Urine Hydrometers ..............- 115
“Test Apparatus Flint’s....-. 225
* Qualitative Analysis Test
PPDOLAING 50s aii y bes Swchoae ee 221
Urine Volumetric Analysis Appar-
MDDS, clases CAL a darn a knew ek ees 221
WVaeauin FGUGG uss sc soc. Sal eek 79
Vapor Index, Lippincott’s......... 177
Vance, Darehon- ooo vee. ti ese 177
St ARE OE eieial Le pes ue ees 177
Wie RUCR hah s a hincadncebucavetawe 177
Vials, Homeopathic.......-........ 177
Dey: SUR ID, San Ce on oho aa cee 77

Vogel’s Gas Bottle Tubes... .... .174

“ Optical Lactometer. ...... 120
Volumetric Analysis, Apparatus f- 219
Von Babo’s Sulphuretted H> cro

gen Apparatus....6..-2..2...... 106

Von Babo’s Burner............... 36
V tican Barmers i. wo ei aes 38
Van Brunt’s Electrical Condenser. 74
W.

Washing Bottles... oie... intel 177
Oi Mereday's co. vans 177
ae Os OEE wal tg das 174
S Oe OUI Rios das 180

Ss Gas Apparatus of Porce-
IMME Mace Ue tac aen wu erat ce 109
Watch Glasses, Bohemian...... ecchey

266 INDEX.

Pace | PAGE
Watch Glasses, French.........-- 127) Wine) Braggicy ioass ess esoxeceacs .179
Glass Holders, various..... 47, “ Copp Ob cirax cs cad Asin eer ana l7y
Makers Hammer.......-.. 1} Silk Wound. ..........179
+ BATTR A hoo cas one RSet CAOAREE Sakks + ou e ae eck se ale i7¥
Water Baths, Copper... 55.5553. £97 1... AOR La eps segue oe adap ok aaey 180
bic. POPOOLRIN <. sv a's waae 177 |): amenities oot 179
a vie NOR CHER. Seog i sce « 177 ee Pao ions ee wee oe 179
“ Distillation Apparatus. .--. 69) Will & shpat tc Nitrogen
«'~'; Decom position 232, 233; 239, 248). -- Bulbe. os ccs ee cesses case
“Freezing in Vacuo....-.... 95 Wirtembers g ‘Syphon... Sonsewewcc eee
SS PRABUNORS 22S ic Sta ee ee 177 | Woulff’s Apparatus... Sot ne hee
Weights and Pulleys. .............244 (Sk OCURDE OC hbadaserccests 31
SS OURS. Cos cae ack 178, 179| Worms, Condensing, various...... 54
Welter’s Safety Tubes........ ...- 97 | Wurtz Distilling Apparatus,....-. 70
Whirling Table<ooo25 oo. 0e docks = 244
Wilson’s Chemistry set...... --.-- 216 Z.
Wild’s Saccharimeter...... ....--- 145 | Zine Filme ccc Aus her etense ees 180
Wollaston’ s Cryopherous....-..-..-. OO} 7 82 BIRO esos ias cose seen wats 180
Goniometer.... .....- 110 | Zines for Bichromate Batteries... -.180
Wetherell’s Apparatus for deter- ‘* “ Bunseu’s Battery........ 180
mining Carbonic Acid in Carbon- = ** Grove's « euae a cele

ates”. ee eewerssrrerres ceee- 12 es ss Smee’s af eeareve . 180

5 da
hae
Ya

ge

Sy HSONTA
MAK 011984
LIPRARIES

af

a ee

aad

or

piss
eg

oa.

: i aa
bere nae nei a

i," ‘ht
rae ans co
Aotaea ie
rae aay ;

ae 3

“
a
pera

+ pg

err

Pie
easy

Pa ae 4

es
rT

*

Pn Baia a re

oo

ie

ore,

9 + " a % J ne ars : Pe 5 i . i : s |
+ s f cs 4A p ‘ ‘i . | | |
’ ; 2 F 3 cae a
| | : | | | 6% 7 é iy hail
a i ; .
| . ; ; : . a 7 eal n 4 a 0 "i a . : :
a ef

z
x :
rf ‘ 3 ia) = af - :
; ae Te . : .
5 a 7 a,
tte , es 2
"
os - i i
F 6
a z
"8,

ah Aine
aes Sores
nova

bas uy

Rots,

os

.
eae

AN