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Full text of "American Hand-Book of Chemicals and Physical Apparatus, Minerals, fossils, Rare Chemicals, etc"

, 



H A N D - B O O K 




MINERALS, FOSSILS, RARE CHEMICALS, etc., 



KOR THE USE OF 



ollees, 



HOSPITALS, LABORATORIES, ASS A YE RS, DENTISTS, PERFUMERS, 
CHEMISTS, DRUGGISTS, PHYSICIANS, &c., &c. 



IMPORTED OK -MANUFACTURED BY 



No, 6 Barclay & 12 Vesey Streets, 

clooz* "West of tlo. ^ 

NEW YORK. 



SOLE AGENT FOR 



Ward s Plaster Casts, Trommsdorff s Pure Chemicals, &c., &c. 



1872. 



yiuu 



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, I 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 inaccu 
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 involved 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 Avhich 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. 

E. B. B. 

10 BARCLAY ST., N. Y., 



July, 1872. 



WARSHAW 
COLLECTION 



No. 



ERRATA. 



During the printing of this book the following prominent 
errors were discovered : 



On page 


6, No. 


1252, for $3. 50 read $5.50. 






21, " 


1431, in nests of 1-12, per nest, $4.50. 




M 


23, " 


1453, pints, 90c. 









1476. price $35. 00. 








1482, " .15. 








1483, " .30. 




U 


27, 


1501, for 22 oz. read 32 oz. 




II 


28, " 


1515, strike out 3 and 6 oz. sizes. 








1515 a, Boh. top stopper, prices 20 per cent less than idl*. 


u 


30, 44 


1528, 2 fflls., $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. 




H 


49, 14 


1780, should read $40.00. 






52, " 


1801, for .75 read $1.75. 






52, " 


1806, " drip read dip. 






52, 44 


1810, should read unmounted instead of mounted. 






53, 44 


1815, for fractional read fractional. 






56, " 


1869, prices are per dozen instead of single. 






69, 44 


1890, should read perf. cover for gas reduction tube. 






63, 44 


1948, 50 cc, for $1.40 read $1.50. 








41 100 4i 44 2.00 " 2.25. 








44 200 4 " 2.25 " 2.50. 








44 250 " 4 2.50 44 3.00. 




M 


63, " 


1952, for gramme read cc., and for the prices $1.00, $1 


,16, 






and $1.25 each. 




M 


65, 


1975, is of the new form having a glass shelf to support 






the triangle. 




l 


69, " 


2024, %gall., $10.00. 






" 


2025, 1 " for $14.00 read $16.00. 









41 2 " " 19.00 l4 20.00 







72, " 


2024, the price is $20.00. 






75, 44 


2079, for $9.00 read $6. 00. 






77, 


2120, 4l Tangent read Coulomb Torain. 






79, 


2142, 4 $6.00 read $5. 00. 






83, 44 


2177, should read $5.50 to $9.00. 






91, " 


2253 a, Filter Patterns, per set, 60c. 






92, 4 


2276, 1 oz. single piece. lOc. 








ii 2 " 44 " 12c. 








u 4 u u u 1Ba 








" 6 4I " 20c. 








44 8 " " 25c. 








44 12 " " 27c, 








44 16 " 4I 30c. 








44 24 " u 35c. 








44 32 " " 60c, 




44 


93, 


2280, 4 " " 25c. 








8 4 " " 30c. 








44 16 44 44 44 40c. 








44 32 " 44 44 60c. 




M 


94, 4 


2301, instead of German silver point read file on haadte. 


II 


96, " 


2323, " 1 oz. read 8 oz. 








44 18 " 44 16 4i 






44 


2353, read $1.25 for 75c, 





OB page 102, No. 2365 a, Fletcher s gas furnace, 50 burners for smelting iron 

and ether metals, $30.00. 
103, 2375, read $45. 00. 

104, " 2382, strike out % gall. size. 

106, " 2397, for $7.50 read $9.50. 

112, " 2458, $35.00 read $30.00. 

119, " 2557, actual measure read actual measures 

121, " 2586, $1.50 read $2. 50. 

123, " 2604, 3.00 " with swivel, $4.50. 

125, " 2635, guaged read gauged. 

126, " Illustration No. 6241 read 2641. 

127, " 2644, strike out words and wire. 

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

127, " 2647, for 10 in., $2 . 50 read $2 . 00. 
" 2648, " $4. 00 read $5. 00. 

128, " 2675, the price is $2.00. 

129, " 2693, for $2 . 50 read $3 . 00. 

136, " 2838, " $1.50 to $2. 50 read $2. 50 to $5. 50. 
139, " 2890, for .75 read $1.75. 
145, 2953, read $1.75. 

2954, " 2.50. 

; 2955, " 4.00. 

148, 2993, for $1 . 50 read $2 . 00. 
1 2994, " 1.50 " 2.00. 

149, 3001, prices are per dozen and not per single piece. 
" 3002, " " " .--*:" 

152, " 3040, 1 pint, $3.50. 

153, " 3057, for $9 . 00 per Ib. read $5 . 00. 

159, " 3147 a, Spoons, Blowpipe, of ivory, each 40c. 

160, prices of stop-cocks reduce 20 per cent. 
165, No. 3227, for $1.50 read 75c. 

169, " 3304, " 4.00 " $3.50. 

169, " 3306, " 4.00 " 10.50. 

170, " 3318 a, Tips, Blowpipe, brass, each lOc. 

" " &, " " solid platinum, eacL 75c. 

171, " 3343, for $1.00 read $100.00. 
171, " 3344, " 50c. read 40c. 

177, " 3401, the price is $2. 00. 
177, " 3408, 6 in., $5.50 per dozen. 
181, Chemicals, see new price list. 
207, No. 3477, for $7.00 read $10.00. 
" 3478, " 12.00 " 15.00. 
207, " 3479," 3.00 " with swivel, $4 . 50 
211, ; 3485, read series of nine minerals and strike out No. 10. 
Diamond. 



H 


211, 


" 3488, for $6.00 


u 


214, 


" 3504, 


10.00 


It 


215, 


" 3505, 


10.00 


It 


215, 


" 3506, 


15.00 


II 


241, 


" 3593, 


4.00 


II 


250, 


" 3667, 


2.50 



12.00. 
15.00. 
20.00. 
6.00. 
7.50. 

253, Chemicals, list of, for 101 read 181. 
" 259, " Lippincott s paper index, for 77 read 177. 
N B. Prices R. B. Crucibles and Evaps. have advanced; American made- 
goods hav* declined. 

E. B. BENJAMIN, 

10 Barclay Street, JV. T. 





PHILADELPHIA. 1876. 



FIRST PREMIUM 




ft) 



10 tin relay Street, JVew YorL 



AWARDED FOR 



" E.veetfeuct of e)ign and <>) iuijl> in ^^cmicaf nppaiatu> 
and 3 7 irdti} and 3\a f ati| of (Bfyemieak 





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, be s 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 within 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 Cervices 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. 




filtered according to Act of Congress, in the year 1872, 

By E. B. BENJAMIN, 
In the office of the Librarian to Congress, at Washington, D. 0. 



CATALOGUE. 



FOR numbers 1 to 1,248 reference should be made to the Cata 
logue of Dr. H. A. WARD 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 1 ?ctions. 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 Avho may feel a desire to inspect them. The 
extraordinary energy and ability displayed by Dr. WARD, 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 depots, 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. 



1248A. Afosorptiometer, 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 to 12 in fourths. $1.50 

1250. Acetometer, accompanied with hy 
drometer for liquids lighter than water, 
thermometer, and two ground stoppered 





125-2 1253 1248A 

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. 



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. 

.25 .30 .35 each. 

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

1 2 4 oz. 

.50 .63 .75 .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. 
1257. Acid Carbonic, apparatus, 

Dr. Scheibler s, for determining 

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, 

$45.00 
generator, 



$7.50 



$9.00 
12.00 



1260. Acid Carbonic, 

with lead tripod. 
11 inches high, . 
14 " . 

1261. Acid Carbonic, generator, 
French make, very strong and 
heavy, with extra tubes, cocks, 
&c. $25.00 





1257 



1262. Acid Dishes, of Meissen porcelain, for freezing in vacuo, 
&c., with three partitions, five inches. Each, $1.25 



E. B. BENJAMIN S DESCRIPTIVE CATALOGUE. 



1263. Acid Dishes, of Berlin porcelain, with six partitions. 

4 54- 6| in. 

$1.15 1.30 1.50 each. 






l->63 1260 1264 

1264. Acid Dishes, of glass, plain, 011 three feet. 

3 3| 3f in. 

.50 .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 evolved from this acid contains equal 
volumes of chlorine and hydrogen. . $3.00 

1268. Acid Jars, for preparing test solutions in volu 



metric analvsis, 1000 grains. 



$2.25 



in. 1 
$2.00 



2 

2.50 



c. c. 



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

100 200 300 400 500 1,000) 

2 5 5 

3.00 3.50 3.75 

1270. Acid Jars, on brass foot, registering to 12. 

1271. Acid Measures, of porcelain, with lip. 

2 4 8 16 32 



10 j 
4.00 each. 




1269 
Each, .75 



oz. 



.30 



.50 



1.50 



1.80 each. 



OF CHEMICAL AXD PHYSICAL APPARATUS. 



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. 




18 
.60 



24 in. 
.75 each. 



1-274 

1274. Acid .Sulphuric, apparatus for making. 
1275. Acid Phosphorus, apparatus for making. 
1276. Acid Pipettes, with rubber ball. 
1277. Acid Syphon, of glass, with suction tube. 
9 12 

.35 .40 

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 

spring clamp, 18 in. 

$1.50 
1280. Acid Syphon, of glass, 

with delivery tube united by 

rubber. 



$3.00 

$2.50 

.75 





1231 



1282 
$1.50 



1281. Adapters, French, bent, with ring around the larger end. 

1 2 4 8 oz. 

.08 .10 .15 .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. 

H 2J 2i 3 in. 

.30 .35 .50 .70 each. 

1284. Adapters, straight, of Bohemian glass, 

li 2i 2| 3 in. 

.25 .30 .45 .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 requiring careful 

investigation. 

oi 51 5-j- 6fV 6J in. sq. 

$12.00 15.00 19.00 22.00 25.00 each. 

1288. Air Cylinders, apparatus for $12,00 

1289. Air Globes for weighing Gases. 

123 gall. 
$1.25 2.00 3.00 each. 

> 1290. Air Thermometer Tubes, bulb 2 in. dia. Each, .25 

1291. " " 3 inches. " .50 

1292. Alcoholometry. Dr. Pyle s Book, containing tables with 
calculations for estimating true alcoholic per centages according 
to McCulloch. .75 

1293. Alcoholometers, U. 8. Standard, in chamois-lined 
leather 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. 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. 



11 



1298. Alcoholometers, U. S. Standard, Tralles & Richter s 
scale, with thermometer, as above. Each, $2.20 

1299. Alcoholometers, without thermometer, in round, paste 
board cases. Each, $1.00 

13*K). 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. graduated 15 to 95, No. 204. Each, .50 

1303. " Cartier s, French, in round cases. Each, .75 

1304. French, in pasteboard boxes, graduated 

to 40 ; very delicate and correct instruments. Each, $1.25 

1305. Alcoholometers, French, in tin boxes, graduated 10 to 40 

Each, .50 
1306. " in tin cases, smaller size (No. 1,093). 

Each, .25 
1307. Alcoholometer Jars, with glass feet, according to size. 

Each, .50 to .75 

1308. " with brass feet, Each, .90 

1309. Alembics, glass, Bohemian, with loose head and tightly 
ground j oiiits. 



8 oz. 
$1.30 



Pints. 

1.80 



Quarts. 
2.50 each. 





1309 



1313 



1310. Alembics, glass, German, with fast heads, tubulated^ 

quarts. Each, $1.50 

1311. porcelain, with loose heads, 12 oz. " $1.50 



12 E. B. BENJAMINS DESCRIPTIVE CATALOGUE 

1312. Alembics j Salleron s, for testing wines and saccharine alco 
holic liquors, with heating apparatus. Each, 15.00 

1313. Alembic, 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, WetherelPs form. Each, $1.25 

1316. " Eresenius &Wills s form (So. 450) Ea. .65 

131?. Berzelius s " ( " 498) " .75 

1318. Rose s " ( 460) 1.25 




1318 

1319.- 
1320.- 
1321.- 
1322.- 
1323.- 
1324. 
1325.- 
1326. 
1327.- 
1328. 



1321 




\^X^? 


\yj ^- ^ & m_ 


=J 


13-22 


1324 1325 




Mohr s 


form (No. 503) 


Ea. $1.25 


Fresenius s 


" ( " 451) 


" .75 


Schrodtter s 


" ( " 456) 


" 2.00 


Geissler s 


" ( " 455) 


" 1.50 


Fresenius s 


new form ( " 452) 


" 1.50 


Schaffner s 


( 453) 


" .75 


Kipp s 


( " 462) 


" 1.75 


Kipp s 


( 461) 


1.75 


" 


( 464) 


" 1.65 


Mohr s 


( 467) 


" 1.50 



OF CHEMICAL A^D PHYSICAL APPAK ATI S. 



13 



1329. Apparatus, Erdmann s new form (No. 465) Ea. $1.50 
1329A. Bunsen s 1.75 





% 



. V 



1329 



1329A 



1334 



J 
133:i 



1330. Alkalimeter ,Pescroizille 7 s,ol glas, mounted on wood foot 
graduated from to 100, in ones. $2.00 

1331. Alkalimtter, Mokr\s, with glass foot, graduated, to 100. 

$1.75 

133*2. Alkalimeter, Tires, with glass foot and stop-cock, and 
channel stopper for pouring liquids. $2.00 

1333. Alkalimeter, Leslie s, with glass foot, cork-stopper, and 
tw r o pipette tubes. $1.50 

1334. Dtto, Descroizille s, on glass foot, graduated to 100. 

81.50 

1335.- " Gay Lussac, with wood foot. 

25 c. c. 50 c. c. 100 c. c. 

1 I * 

$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 

1337. 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 ; tivo of the above, including connec 
tion. &1 00.00 



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 hammer, etc., complete. " 10.00 
1347. Aphlogistic or Flameless Lamp, with platinum sponge 
and glass wick-holders. Each, .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 1 2 

.12 .15 .25 .30 .40 each. 



OF CHEMICAL AND PHYSICAL APPARATUS. 



15 




1357 



1355. Arsenic Plates, Meissen, with Lips. 

Small, medium, large. 

.35 .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 



8 
9.50 ea. 



1361. Ditto, ditto, 

1362. Ditto, ditto, 

1363. Ditto, Liebig s. 
1364. Ditto, of glass, with glass stopcocks. 

Litres ^ 1 2 4 

$3.50 3.75 4.75 6.25 

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. " .75 
1368. Atropia Bottles. " -5 



| Galls. 2.50 
Galls. " 3.00 
Each $1.50 to 2,50 




1368 



16 



E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 



H. TROEMNER S STANDARD BALANCES. 




1369 



1369. Assay Balances, 

in French polished 
glass case, beam rest 
ing on agate bearings. 
Sensible to fa 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 ; T J0- part of a 
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 
j- 1 ^ milligramme ; beam resting on agate planes. Needle shows 
ten divisions for one milligramme. $80.00 

1373. Analytical 

Balance, in French 
polished mahogany 
case, with counter 
poised sliding door. 
Capacity 100 grm. f 
sensible to ^fa^ 
grm. Steel bear 
ings, movable 3J in. 
pans, 10 in. beam. 
$4000 

1374. Ditto, ditto, 
has attachment for 
rider, and pan ar- 
$50.00 




1375 



rests. Beam graduated to one milligramme. 



OF CHEMICAL AND PHYSICAL APPARATUS. 



17 



1375. Ditto, ditto, in fine polished glass case, capacity 100 gram 
mes in each pan. Beam divided in half parts of milligrammes. 
Sensible to j\ milligramme, with apparatus for specific gravity. 
All bearings agate. 2f in. pans, 12 inch beam. $86.00 

1376. Ditto, ditto, all bearings and planes agate. $96.00 

1377. Ditto, ditto, capacity 200 grammes in each pan, in fine 
polished glass case, beam divided in y 1 ^ milligramme, sensible 
to 1*5- milligramme. All agate bearings, with improved arrest 
for pans, and apparatus 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, 7J inches beam, sen 
sible to T V th g rain - $24.00 
1380. Weights $20 piece to $1, adjusted to the least Current 



Standard, in velvet lined box. 
1381. Specific Gravity Scale. Constructed 
after the plan of Dr. Mohr. $20.00 

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



$6 00 



Diam. of Pan. 

5 in. 



1383. 4 
1384. 3 



Beam. 

9 in. 

8 " 

7 " 



Capacity. 

32 oz. 
16 " 

8 " 



Price. 

$15.00 
1200 
10.00 




1381 



Pans can be suspended by chains if desired. 



1385. Analytical Scales, for 

weighing Ore.s, Minerals, Gold 
and Silver Coin, Jewelry, Chem 
icals, &c., &c. On fine polish 
ed mahogany box, with drawer. 
Lacquered beam, with box ends, 
movable pans, ivory indicator. 
Sensible to -fa grain. Price 
does not include weights. 

Length of Beam. Diam. of Pan. 

14 in. 6 in. 

1386. Do. 10 " 4J" 

1387. Do. 8| " 3 " 




1385 



Capacity. 

25 oz. 

16 " 



Price. 
$24.00 

18.00 
15.00 



Pans can be suspended by chains if desired. 



I 

18 E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 

1388. Students Balance, in polished mahogany case, sliding 
front counterpoised. Improved apparatus for raising beam. 
Beam, 7^ in.; pans, 2 in. diameter. Loading 50 grms. and 
sensible to -^th. $26.00 

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

Pans. Brass. Nickel Plated. 

2 Jin. $12.00 $14.00 

1390. Do. 2j " 14.00 16.00 

1391. Do. 3 " 16.00 19.00 

1392. Gold Scales. 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. 

12 in. 6 in. 64 oz. $25.00 

1393. - Do. 9 " 5 " 32 " 15,00 

1394. Do. 8 " 4 " 16 " 12.00 

1395. Do. 1 " 3 " 8 " 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. Balances 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. 3J 4 in. 

Price, $2.50 3.50 4.50 each. 



OF CHEMICAL AND PHYSICAL APPARATUS. 



19 






1400 1401 1405 1411 

1403. Balloons,, of Collodion, extremely light and thin, for 
ascension, with hydrogen gas. 

Size, 10 12 in. 

Price, .75 $1.00 each. 

1404. Balloons, French Rubber. Each, .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. 
1400. 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 
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. .50 
Basins and Dishes. See Crystallizing and Evaporating 
Apparatus. 

1414. Basket of Lead, for holding pieces of zinc in hydrogen 
generators. Each, .50 

Batteries. See Electrical Apparatus. Baths, Eye, see E. 
1415. Beakers, of the very lest Bohemian glass, thoroughly an 
nealed, and of uniform thickness, for enduring extremes of 



30 



E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 



temperature, of Berzelius s usual form, in nests of 00 to 1, con 
taining 1^ to 3 ounces. Per nest, .20 




1408 

PER NEST. 

1416. Beakers, in nests of 4, 00 to 2, containing -J- to 4 ozs. .35 



1417. Ditto, 


ditto, 


3, 1 to 3, 


1418. Ditto, 


ditto, 


5, to 4, 


1419. Ditto, 


ditto, 


5, 1 to 5, 


14*20. Ditto, 


ditto, 


6, to 5, 


1421. Ditto, 


ditto, 


7 ; __0 to 6, 


1422. Ditto, 


ditto, 


9, to 8, 


1423. Ditto, 


ditto, 


10, to 9, 


1424. Ditto, 


ditto, 


13, to 12, 



3 to 6 


.40 


14 to 9 " 


.65 


3 to 15 " 


.75 


14 to 15 " 


.80 


14 to 21 " 


81.10 


14 to 48 " 


2.00 


14 to 70 


2.25 


H to 140" 


4.00 



(The capacities are approximate only.) 

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



NOS. 


HEIGHT. 


WIDTH. 


CONTENTS. 


PRICE, EACH. 





2 inch. 


1J inch. 


14 


ounce 


.06 


1 


24 do. 


14 do. 


3 


do. 


.09 


2 


3 do. 


If do. 


4 


do. 


.12 


3 


3t do. 


2 do. 


6 


do. 


.16 


4 


4 do. 


2^- do. 


9 


do. 


.20 


5 


4 do. 


2t do. 


15 


do. 


.25 


6 


51 do. 


3 do. 


21 


do. 


.35 


7 


61 do. 


3 do. 


33 


do. 


.40 


8 


74 do. 


3f do. 


48 


do. 


.45 


9 


8i do. 


4 do. 


70 


do. 


.55 


10 


9J do. 


44 do. 


85 


do. 


.65 


11 


10 do. 


5 do. 


110 


do. 


.75 


12 


11 do. 


54 do. 


140 


do. 


.90 



1426. Beakers, tall and narroiu ; French form, very thin, 8 in 
a nest. Nos. 1 to 8. Price per nest, $3.50 



OF CHEMICAL AND PHYSICAL APPARATUS. 








1419 



1422 



1424 



1426 



1435 



NOS. 


HEIGHT. 


WIDTH. 


CONTENTS. 


PRICE, EACH. 


1 


2f inch. 


14- inch. 


14- ounce. 


.25 


2 


3 do. 


2~ do. 


2^ do. 


.30 


3 


4t do. 


2| do. 


4 do. 


.40 


4 


5 do. 


2i do. 


6 do. 


.50 


6 


6* do. 


3 do. 


16 do. 


.60 


"6 


S" do. 


3| do. 


24 do. 


.70 


i 


9 do. 


4 do. 


32 do. 


.80 


8 


10 do. 


4J do. 


J gal. 48 oz. 


$1.00 



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

Each, $1.75 

1428. Ditto, very large, Nos. 10 to 13, nests of 4. 3.50 

1429. Ditto, full nests of 15, 00 to 13. " 7.00 

1430. Ditto, singly. Each, .15 to 2.00 

1431. Ditto, Griffin s wide form, lipped. 



NO*. 


DEPTH. 


WIDTH. 


CAPACITIES. 


PRICE, EACH. 


1 


3 inch. 


2J inch. 


5 ounce. 


.15 


2 


3^- do. 


24- do. 


8 do. 


.25 


3 


4 do. 


3 do. 


12 do. 


.30 


4 


44- do. 


34^ do. 


20 do. 


.35 


5 


5 do. 


3f do. 


25 do. 


.40 


6 


54- do. 


4^ do. 


40 do. 


.55 


7 


64- do. 


4 do. 


do. 


.60 


8 


7i do. 


5 do. 


do. 


.70 


9 


8| do. 


5f do. 


do. 


.80 


10 


94- do. 


6i do. 


do. 


.90 


11 


9f do. 


6f do. 


do. 


$1.00 


12 


10 do. 


7 do. 


do. 


1.10 



1432. Beakers,, ditto, ditto, nests of 3, 1 to 3. Each, .60 



22 E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 





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. 2.00 

1436. Ditto, glass, flat bottom, perpendicular sides, without rim, 
shallow (from 2 to 2| inches deep), nests of 4, small. 

Each, .75 

1437. Ditto, nests of 9. $2.00 

1438. Ditto, tall conical, with lip, 8 ounce capacity. " .50 

1439. Ditto, porcelain, egg shape, flaring mouth, useful in dissolv 
ing metals and acids. Each, .30 
1440. Beale s Quick Filter. .75 
1441. Beehive, shelves. Small, 25c.; large, 7^c. 
1442. Bell Glasses, flat knobbed. 

6 inch. 8 inches diameter. 

$1.25 1.75 each. 

1443. Ditto, swelled, with knob. 

i 1 2 gal. 

$1.50 2.00 3.00 each. 

1444. Ditto, open tops. 

i 1 2 gal. 

$1.75 2,50 3.50 each. 

1445. Ditto, French, knobbed, tall. 

pints. quarts. 1 gal. 

.30 .60 $1.00 1.50 each. 

1446. Ditto, American, tall. 

pints. quarts. 1 35 gal. 

.40 .75 $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 1 2 gal. 

$1.50 1.75 2.75 each. 

1448. Ditto, American, with small foot. 

i 1 1* 2 gal. 

$1.25 1.50 1.75 2.50 each 



OF CHEMICAL AND PHYSICAL APPARATUS. 





1444 



1445 



1449 



1451 



1456 



1449. Bell Glasses, tall, wide open top. 

pints. quarts. -J- 

.50 .75 $1.00 



1 gal. 
1.50 each. 



Each, .25 



Igal. 
1.50 each. 



I gal. 
3.25 each. 



1450. Ditto, with glass plate on top, extra. 
1451. Ditto, open mouth, for caps. 

quarts. -J 

.75 $1.00 

1452. Ditto, with hrass cap and stopcock. 

quarts. ^ 

$2.25 2.75 ~ 

1453. Ditto, accurately stoppered with fine ground emery. 

quarts -J 1 gal. 

$1.00 1.50 1.75 each. 

1454. Ditto, 16 oz., with hole in stopper, large enough to introduce 

a tube. .75 

1455. Ditto, for hydrogen lamps, 8 oz. " .35 

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. 

$2.75 



quarts. 
3.25 each. 



1458. Ditto, Bohemian, having 
large ground glass stopper, 
bottom. 

4 8 16 

.30 .50 .75 

1459. Ditto, open top, graduated in cubic centimetres. 

500 1,000 2.000 2,500 cc. 

$2.50 3.50 525 5.50 each. 



the base stoppered with 
cut and polished on . the 

32 oz. 
$1.00 each. 



E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 




1462 



1463 



146o 1464 1465 



1473 



1474 



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

500 1,000 2,000 2,500 cc. 

$4.00 5.00 6.75 7.25 each. 

1461. Ditto, fitted with glass globes, with brass cap, stopcocks, 



etc., 1 gal. 



Each, $6.00 



Bell- Shaped Gasometers. See Gasometers. 
1462. Bellows, hand. 

6 8 inch. 

.75 $1.00 each. 

1463. Ditto, doable 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. " .25 

1466. Binding Clamps, for Smee s batteries. " .75 

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. " .60 

1471. Ditto, with stopcock and plain bubble pipe. " $2.50 

1472. Ditto, for exploding gases. " 1.00 

1473. Bladder Pieces. " .50 

Blast Lamps. See Burners. 

1474. Blast Attachment, for blowpipe, brass. " .75 

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. 




1476 



1478 



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 lig ht, carefully finished, with 

regulating screws. 20.00 




1481 



1491 



1482. Blow-pipe, of glass. .25 

1483. Ditto, Black s, conical, of japanned tin, with movable brass 

nozzle. .40 

1484. Ditto, brass, jewelers form, 8 inch. Each, .25 

1485. Ditto, ditto, with brass bulb. .75 

1486. Ditto, brass, Berzelius s form, short nozzle piece, and 

soldered platinum tips, in paper cases. Each, $2.00 



26 



E. B. BENJAMIN S DESCKIPTIVE CATALOGUE 





1482 1483 



1484 1485 1486 



1487 



1488 



1487. Blow Pipes 5 brass, with barrel-shaped head, soldered plat 
inum tip. Each, $2.50 

14g^. 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 





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, etc. 

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 



1505 



1504 



1501 



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. " 4.50 

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 15.00 

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 oz. 

.35 .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 oz., .35 16 oz., .45. 22 oz., .65 each. 
1502. Ditto, French narrow-mouthed, or Packing bot 
tles, for corks, pressed, per doz. 

i i i 1 2 4 6 oz. 

.20 .25 .30 .35 .40 .50 .65 1502 

1503. Ditto, ditto, ditto, oval, 2 oz., per doz. .60 

1504. Ditto, best quality white imported blown glass, with ring 
around the neck and wide mouths; 

i f 1 2 4. 6 8 16 32 oz. 

.40 -50 .75 $1.00 1.25 1.50 1.75 2.50 4.00 per doz, 

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



28 



E. B. BENJAMIN S DESCRIPTIVE CATALOGU 





150(3 i;,!l 1512 1513 



1514 



1515 



1519 1521 



1522 



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 oz., .60 4 oz., .75 6 oz., $1.25 12 oz., 1.75 

1508. Ditto, ditto, ditto, wide-mouthed, same prices. 

1509. Ditto, German, wide and vial mouth. 

| 1 2 4 8 16 oz. 

.40 .45 -50 .65 .75 $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. 

$2.70 



quarts. 
4.00 



5.25 



1 gal. 

12,00 per doz. 



24 
4.00 



32 oz. 4- gal. 
5.00 8^00 doz. 



1514. Ditto, German, ditto, ditto, ditto. 

1 2 4 6 8 12 16 
$1.25 1.50 1.75 2.00 2.25 2.75 3.25 

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 oz. 

$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 
stored in them, will not deteriorate. 

-J - i | f 1 2 4 8 12 .16 32 oz. 
$1.15 1.20 1.25 1.30 1.50 2,25 3.00 4.00 5.00 5.50 7.00 per doz. 

1517. Ditto, French, colored. 

1 2 4 81 32 oz. 

$2,00 2.50 3.00 6.00 8.00 10.00 per doz. 



OF CHEMICAL AND PHYSICAL APPARATUS. 29 

1518. Bottles j 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 32 oz. -Jgal. 1 gal. 2 gal. 

$2.00 2,25 2.63 3.00 5.25 8.00 24.00 per doz. 

15 20. Ditto, ditto, square-pressed stoppers. 

8 16 32 oz. 

$2.25 2.63 3.00 per doz. 

1 1521. Ditto, ditto, German flat top stoppers. 

* 12 3 4 6 8 12 16 32 oz 
$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 stoDpers, 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 Xo. 1524. 

i i i 1 2 4 6 8 12 16 32 
.55 .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 
finest emery, so that no air can enter to in 
jure the solutions stored in them ; these bot 
tles are made expressly for the laboratory, to 
hold choice reagents. 1516 1524 

i i 1 2 4 68 12 16 32 oz. 
.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. 

|- pint. pint. quart. ^ gal. 

.75 $1.00 1.25 2.50 each. 

Ditto, ditto, with engraved labels to order. 

1526. Ditto, ditto, French blue tinctures, or narrow mouth, with 
glass stoppers. 

loz. 2 3 4 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 oz., $3.00 8 oz., $4.25 per doz. 




E. B. BEtf JAMIE S DESCRIPTIVE CATALOGUE 




1528 



1530 



1531 



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

1529. Ditto, Tincture, accurately ground top stopper, tubulated 
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. 

^124 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 
capacity. Each, $2.00 

1533. Ditto, for ether, white glass, with cap and ground stoppers 

1 2 4 8 16 

.25 .35 .40 .60 $1.00 



32 oz. capacity. 
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. " 7.20 



OF CHEMICAL AND PHYSICAL APPARATUS. 



31 







1534 



1539 



1541 



1542 



1543 



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 1.25 

1538. Ditto, Woulff s, Bohemian, 2 necks. 

24 8 16 32 oz. -J- gal. 

.40 .45 .50 .65 .90 $1.30 each. 

1539, Ditto, ditto, with a tubulature, near bottom. 

Quarts, $1.50 $ gal., 2.25 each. 

1540. Ditto, Woulff s Bohemian, 3 necks: 

2 4 8 16 32 oz. | 1 1 gal 




1547 



.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. 

i f y 1 2 4 litres. 

.66 .75 $1.00 1.40 2.50 each 

1542. Bottles, Woulff s French, 3 necks. 

i f/ 1 2 4 litres. 

:65 .85 1.16 1.75 3.00 each. 

1543. Ditto, Woulff s French, 2 necks, with tubulature ne ar 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.^,0 to 4.50 per doz. 

1546. Bottle Imps, ordinary. Each, .25 

1547. Ditto, fine quality. 

1548. Ditto, with car and balloon. 

1549. Bottle Brushes. See Brushes. 

1550. Boxes of black japanned tin for blow-pipe use in holding 
capsules, test tubes, etc. Each, .75 




1545 



Each, .75 
" $1.00 



32 



E. B. BE NM AMINES DESCRIPTIVE CATALOGUE 



1551. Boxes, turned ivory, for ^ oz. bottles. Per doz., .60 

1552. Ditto, including bottles. $2.00 

1553. Ditto, boxwood, including bottles. " 1.50 

1554. Ditto, of pasteboard, including bottles. " 1.25 

1555. Ditto, fine turned rosewood, ivory trimmed, for tapers or 

bottles. Each, .25 . 

1556. Ditto, pasteboard, round English form, holding 
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, 



Per doz. boxes, .25 

.40 

" .45 

" .48 

.50 



2 grammes. 

1559. Ditto, ditto, 4 grammes. " 

1560. Ditto, ditto, 3 in a nest, 1 s to 3 s. " 
1561. Ditto, ditto, 5 in. a nest, 2 s to 6*s 
1562. Ditto, ditto, 6 in a nest, 1 s to 6 s. 
1563. Ditto, for Lip Salve, plain. Per doz. boxes, $1.00 

1564. Ditto, with legend "Lip Salve." 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. " 2.50 

1567. Ditto, ditto, turned boxwood, flat form. " 1.00 

1568. Ditto, ditto, turned rosewood, " " 1.25 
1569. Ditto, small dove-tailed pine wood. 

3x3x15 3x3x20 12x12x30 

.35 .40 $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. 

1573. Brass Jets, see Jets. 

1574. Brushes, fine, for Feather Tubes. 

1575. Ditto, for ordinary Test Tubes. 

1576. Ditto, ditto, large ditto, ditto. 

1577. Ditto, ditto, extra large ditto, ditto, or Bottles. 



1574 1575 

Each. .25 
.10 
" .15 

.20 



(The above test tube brushes are all made of galvanized iron 
or copper, to prevent rust.) 



OF CHEMICAL AND PHYSICAL APPARATUS. 



33 



1578. Brushes,, for bottles, patent tin handles. Each, .25 
1579. Ditto, ditto, wood handles, large size. " $1.00 
1580. Ditto, Camel s hair, for cleaning the button, in assay 
ing. Each. .25 
1581. Ditto, bristles, ditto. .50 
1582. Bubble Pipe,, of clay, with connecting piece of bras,-?, lor 
blowing hydrogen bubbles. Each, .40 
1583. Ditto, ditto, of brass. " .75 



1583 



1587 



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 maybe cooled; 
hard glass; large sizes. Each, .10 to .25 

1586. Bimgs, of selected cork, from in. to 2 in. Doz. .20 to .70 

1587. Burettes, Bink s, English form, with wooden foot, 

50 



25 
* 

$1.50 



25 

A, 
1.75 



1588. Ditto, Gay Lnssac. 

25 50 

$1.50 2.00 



50 

1.75 



50 

A 

2.50 



2.25 



100 
2.25 



100 c. c. 
2.25 each. 



100 c. c. 
* 
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. c 



3.25 



4.00 each. 



34 



E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 



J 




1590 1591 3592 1593 

1590. Burettes, Mohrs. 



1594 



159? 



1598 



20 


20 


2 


5 


25 




30 


40 


50 




50 




i 


fo 




\ 


i 

1 




10 


I 


i 




i 




$1.25 


1.50 


L50 


1.7 


5 


2.00 


2.25 


2.00 


O 

-v . -v 


5 


50 


60 




100 




100 




100 


200 


c. c. 






fo 


4- 




i 




i 




A 


4 








$2.50 


2.50 




2.50 




2.75 




2.75 


2.00 


each 


. 





1591. Ditto, ditto, with glass stopcock. 

25 25 50 50 100 100 c. c. 

$2.25 2!50 3.00 3.25 3.50 4.00 each. 
1592. Ditto, for Chameleon process, with lateral tube, joined near 

the bottom. 

25 . 50 c. c. 

A, A 

$1.75 2.25 each. 

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

25 50 c. c. 

. 

$!.;><) 2.00 each. 

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

25 50 c. c. 

i 
$2,00 2,50 each. 

1595. Burettes, Leslie s, see Leslie s Alkalimetcrs. 
K>9<>. -Burette Clamps. 

1597. Burette Swimmers, or Erdmann s Float. 
1598. Burette Tips, with rubber attachments. 
1599. Burette Supports and Holders, see Supports. 



Each, ..10 
.50 
" .25 



OF CHEMICAL A.XD PHYSICAL APPARATUS. 35 

BURNERS. 

1600. Burners, Argand standard register, as used with Bunsen s 
Photometer. Each, $4.00 




m 
1601 1602 & 1603 1606 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, Bunseirs 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 

1609. Ditto, ditto, French, with universal joint and stopcocks for 



36 



E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 




1609 



J613 



16] 8 



1619 



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. Each, $1.00 

1613. Burners, Bunsen s small blast, for fastening to the table 
with one extra tip. Each, 1?G.OO 

1614. Ditto, Bunsen s plain, with star and chimney. " 2.00 

1615. Ditto, ditto, with star and porcelain plate to catch the ashes 
of the filter. Each, $2.50 

1616. Ditto, ditto, with star, chimney and plate to catch the ashes 
of the filter, and provided with a thumb-screw at the base to 
raise and lower the burner. Each, $3.00 

161 7. Ditto, ditto, plain, with two tubes. " 2.00 

1618. Ditto, ditto, plain, with three tubes. " 2.50 

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



OF CHEMICAL AXD PHYSICAL APPARATUS. 3? 

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

Each, $9.50 





1620 1621 1628 

1620. Burners, Bunsen s, with three tubes and caps, arranged so 
that the flame touches every part of the crucible. Each, $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 1631, produce a 
solid circular 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. " 4.00 

1624. Ditto, ditto, eight tubes. " 5.00 

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 



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. Each, $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 hy which the floAv 
of air and flame is regulated at the same time. A new inven 
tion. Each, $10.00 

1633. Ditto, Mendelsohn, for heating watch glasses. " $1.75 

1634. Ditto, with long tube and ordinary gas tip. " 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 

filled with sand and cement, through which the gas exudes. 

Each, $1.25 

1639. Ditto, ditto, ditto, on tripod. 1-25 

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 

-2. Ditto, tips, of silicated steatite for attaching to the ends of 
common gas burners. Each, .25 to .50 

-3. Ditto, tubes, or jets with flattened ends to introduce into 
an ordinary Bunsen burner, to produce a flat flame. Each, .%^ 
1644. Ditto, furnaces, porcelain, to surround the burner to in 
crease the heat. Each, $l-.25 
1645. Burnishers of Agate. 1.50 
1646. Bolt-head experiment in Pneumatics. Apparatus for. 

Each, $4.00 

1647. Bell in vacuo. 4.00 

1648. Bursting Squares. Per doz., $2.50 

1648. A 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. Caoutchouc, unvulcanized, in sheets, for forming tubes, 
covering jars, etc., ~-h in. thick. Per square foot, .75 

1651. Ditto, vulcanized, ditto, ditto. .70 

1652. Ditto, Balls, pierced to attach to pipettes, syphons, etc., 
round and pear shape. Each, .50 

J653. Ditto, caps, vulcanized, for fitting glass tubes to glass 
bottles, etc., 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 



4:0 E. B. BEXJAMOTS DESCRIPTIVE CATALOGUE 

1656. Capillary Tubes, mounted in japanned cistern. Per set,$2.00 
1657. Ditto, Tubing, 5 feet lengths. Each, .10 

1658. Caps for bell jars, globes, etc., of brass. 

Sizes, f to 1 1| li If to H If 2 2| in. 

.55 .60 .65 .70 .75 .80 .85 each. 

1659. Ditto, for gas bags, etc. 

i f $ to 1 in. diameter. 

.50 .55 .60 each. 

Ditto, for deflagrating jars. See Deflagrating Covers. 
1660. Ditto, for galli pots, small jars, etc., silvered. Per doz., .10 
1661. Ditto, porcelain, for lamp chimneys, to economize and 
reflect the light. 

Kos.1 234 

.50 .60 .75 .90 each. 

1662. Canules, French/ Per doz., $1.25 

Capsules of glass, See Glass Evaporating Dishes. 
1663. Ditto, of horn. 

If 2 2i 3 3i 4 4i 4^ 5 

.20 .24 .32 .36 .45 .56 .72 .ss a 1.07 per pair 

Ditto, of iron. See Sand Baths. 



1664 1667 1669 167<> 1673 

1664. Ditto, ditto, transparent glazing iiij.de, lipped. 

Sizes, 5 6 7 in. 

$1.20 1.40 . 2.00 each. 

1665. Ditto, of platinum, sizes as required. Per oz. (gold), $10.00 

1666. Ditto, of silver, sizes as required. 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. " .75 

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.^0 
2. Ditto, Plattner s, flat bottom and straight sides, holding 
about ounce, semi Berlin. Per doz., 81.25 



OF CHEMICAL AND PHYSICAL APPARATUS. 41 

1673. Capsules, PI atiner 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 do/.. $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 Digesters, Evaporating Dishes, 
Combustion Boats, etc. 

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 Bunseirs and other batteries,of French graphite, 
Sizes, G 7 10 in. 

.40 .50 .75 each. 

1678. Ditto, flat, i inch thick, 10 x 6 in. Each, .75 

1679. Ditto, pencils, of pure graphite ,for the electric light. 

Per inch, .6 





1680 1661 

1680. Carbonic 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. hijrh. 

$10.00 15.00 20.00 each. 

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



4:2 



E. B. BENJAMIN S DESCRIPTIVE- CATALOGUE 





1682 1G86 

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, tine quality. Each, .75 to $1.00 

1686. Ditto, ditto, with jar, additional. Each, $1.50 

1686. A Cases, to hold 6 bichromate battery cells. 1.50 

1687. Caseroles, semi Berlin, ordinary form, with lip and 
straight-flattened handle, glazed inside and outside. 
Sizes. No. 00 1 2 3 4 

Price, .35 .50 .70 .85 *1,00" 1.35 each. 





1687 1688 1690 1691 

1688. Ditto,deep, for coloring pots used in manufacturing jewelry. 

Sizes, 5| 6-J- 7-J- in. 

Prices, $3.00 4.00 5.00 each. 

1689. Ditto, Royal Berlin, lipped, looped handle glazed inside and 
out, 1| ounce capacity each. Each, .40 

\ 690. Ditto, ditto, lipped and round porcelain handle. 

1 2 3 oz. 

.30 .35 .40 eacn. 

1691. Ditto, of nnest French porcelain, glazed inside and out, ex 
cept the bottom, having cover and wooden handle. 

Nos. 543211 extra. 
$l/>3 1.25 1.50 2.00 2.25 4.00 each. 



OF CHEMICAL AND PHYSICAL APPARATUS. 



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



Nos 3 

.75 



2 

$1.00 



.50 



1695 



1.25 each. 

1692. A 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. A Caustic Holders, of ivory, with metallic ends. " 4.00 

1694. Cells, carbon, for fusion supports. " 

1695. Ditto, porous, French and German, imported. 

2x4 2fx4 2x5i 2|x6 2fx7^ 3 x 8 in. 
.12 .15 .20 .30 .45 .50 

1696. Ditto, ditto, sizes above, 3 x 8. Each, .75 to $1.00 

1697. Ditto, oval microscopic of plate glass, l-^-xS inches. 

Each, .50 

1698. Centimetre Measures, of boxwood, having 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. Each, $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. 123 

.30 .35 .40 each. 

1703. Ditto, ditto, with polished cocoa 
handles. 

Xos. 456 

.50 .60 .75 each. 

1704,-Ditto, ditto, with eight -points, with 1702 1703 1704 1706 




polished cocoa handles and brass ferule. 



Nos. 7 
$1.00 



8 
1.20 



9 
1.25 each. 



1705. Ditto, Holder, Avith platinum attachment and wood 

handle. Each, $3.25 

1706. Ditto, Saw, small. .50 

1707. Ditto, ditto, large. " .75 



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 






1709 1710 1713 1714 1715 

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

48 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 

1 715. Ditto, ditto, 2 bulbs, 

8 inch. Each, .25 

1716. Ditto, ditto, bent X*^X V 

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. Each, .20 

1719. Ditto, ditto, Marchand s, U shape, with connecting tube. 

Each, .50 
1720. Ditto ditto, U shape, plain. 

.6 8 10 inch. 

.30 .50 .60 each. 




OF CHEMICAL A^D PHYSICAL APPARATUS. 



45 



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




1722 



1723 



1727 




23. 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. 

Each, .75 

1728. ( harts, colored, showing the spectra of stars and metals, 

according to Kir r hoff and Bunsen. Size, 28 x 40 Each, $3.25 

1729. Ditto, ditto, in sets of 3. 9.00 

1730. Ditto, of snow crystals, showing the different forms assumed 

by frozen vapor. Size, 24x36. Each, $4.00 

1731. Chlorine (*as 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 m 2 
lamp, pneumatic trough, iron stand, flasks, sand bath, etc. 

Each, $10.00 



46 



B. BENJAMIN S DESCRIPTIVE CATALOGUE 





1734 



1736 



.75 

$1.25 

2.50 

2.50 

1.25 



1734. Chlorine Gas Apparatus, Silliman s method. Each, $6.00 

1735. Ditto, absorbing apparatus, Bunsen s, for use in volumetric 

analysis, as described in Mohrs titrir method, exclusive of 

stand and lam}). Each, .75 

1736. Ditto, ditto, Bunsen s style. 

1737. Ditto, ditto, Mohr s, without jar. " 

1738. Ditto, Meter, Descroizelle s, graduated in 100 c.c. 

1739, Ditto, ditto, Gay Lussac, graduated in 100 c.c. 

1740. Ditto, ditto, Mohr s. 

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. 

Kach. x 5.00 to 5.00 

1743. Ditto, Safety Pipette, ac 
cording to Mohr, with safety tube, 
rubber tube, and pinch-cock. 

Each, $1.00 

Ditto, Gas Bottles. See Ga0 
Bottles. 

1744. Ditto, Distilling Apparatus, for distillation of chlorino 
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 

1 746. Chime, of 2 bells 2.50 




1744 



OF CHEMICAL AXD PHYSICAL APPARATUS. 



1747. Chime, of 3 bells. 
1748. Ditto, of 5 bells. 



Each, $3.25 
" 5.00 






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 
1752. 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. Each, $1.25 

1754. Ditto, for watch glasses, Dr. Craig s form. " .20 

1755. Ditto, ditto, Hoffman s form. .20 

1756. Ditto, ditto, Mohrs form. 

3456 in. 
25 .30 .35 .40 each. 

1757. Ditto, for holding hot test tubes, metallic, with wooden 
handle. 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. 

i 1 oz. 

.35 .50 each. See also Acid Bottles. 

Ditto, Glasses, used in testing colored flame. See Colored 
Glasses. 

Coddingtoii Lenses. See Lenses and Loups. 



K. B. BENJAMIN S DESCRIPTIVE CATALOGUE 






1759 



1760 




1 759. Coffee Machines, glass and porcelain, French , 

Each, $7.50 

1760. Ditto, ditto, porcelain, German, for preparation 1764 
of coffee for the table, by infusion. A very highly prized appar 
atus by those who use it. 

Nos. 345 

$3.50 4.50 6.00 each. 

Coils, Ruhmkorff s. See Electrical Coils. 
(/Glanders. See Straining Dishes, Baskets, Filters, etc. 
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. Each, $20.00 
1763. Ditto, of glass crystals, in a velvet-lined box. " 15.00 
1764. Ditto, of crystalographic, modelsin wood "H< se s. 104 pieces, 

Each, $20.00 

1765. Ditto, ditto, smaller, 34 pieces. 9.00 

1766. Ditto, ditto, primary forms. 

1767. Ditto, ditto, of glass, with strings, for showing their axes. 

1768. Ditto, of 10 raxe specimens for spectral analysis, with 

tubes having 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 



OF CHEMICAL AND PHYSICAL APPARATUS. 



49 



1770. Collection of Nitrogen disengaged during combustion 
>f organic bodies. Simpson s apparatus for. .75 

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. x20.00 





1778 



1772 1776 

1770. Ditto, ditto, set of 5 balls, of hard wood, mounted. $3.~(! 

Collodion Balloons. See Balloons. 

1773. Colored (xlasses, for fancy glass blowing, in rods about 
3 feet long. Each, .25/ 

1774. Ditto, Glass Plates, used in testing colored name. 

Size, 3x3 4x4 5x5 inches. 

.15 .20 . 25 each, 

Color Tests. See Tests papers. 

1775. Color Test Slab, of porcelain, having 12 cavities: 4^ 
x24- inches. Kach, .75 

1776. Combustion Boats or Capsules, of porcelain. 
2f to 3 3i to 4 6 in. 

.20 .30 .50 each. 

17 76. 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. Each, $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. 

1 7 7tt. Ditto, Bunsen s, having 25 burners. Imported. Each, &MO.OO 
1780. Ditto, American. 50.00 



50 



E. B. BENJAMINS DESCRIPTIVK CATALOGUE 



1781. Combustion Furnace, French, having 10 burners. 

Each, 
$30.00 




1782. Ditto, ditto, for use with coal oil, as invented and employed 

by & 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, ditto, with 3 " " " 22.00 




1785. Ditto, ditto, with 4 burners. 



Each, $30,00 



OF CHEMICAL AND PEYSICAL APPARATUS. 



51 



I 



1786. Combustion Furnace, ditto, of St. Clair Deville, with 

5 burners, without tank. $40.00 

1787. Ditto, ditto, tank for oil. Each, #35.00 

1788. Ditto, Lamps. See Combustion Furnaces witli gas 

1789. Ditto, Foil of Copper, for enveloping the tube in organic 

analysis. Per ounce, .5 

\ 7 90. Ditto, Tubing, of genuine hard, infusible Bohemian 

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





1791 1791 1795 1799 1800 

. Ditto, ditto, -J- to f 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. 

.35 .45 each. 

1793. Ditto, ditto, porcelain, straight, inch bore. Each, .50 

1794. Ditto, ditto, fine French, 1| in. bore. " $1.50 

1795. Ditto, ditto, Meissen porcelain, flanged at both ends, ajid 

glazed inside. 

f 1 2 in. diameter. 

.75 $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. .10 

1798. Ditto, Troughs, of fire clay, for supporting the tubes, 6 

to 8 in. long. Each, .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 



E. B. BEXJAMIN"S DESCRIPTIVE CATALOGUE 

pivots, resting on line steel points, with polished wooden eases 
for ciirrviiiuf them. Each, 





1^01 1803 1806 

i Compasses, plain, steel bearings. - Each, .75 

1802. Ditto, brass cases, with spring stop and agate bearing. 
No. 1, H.OO No. 2, $1.50 each. 

1803. Ditto, watch form. 

Xo. 4, $3.50 No. 3, $4.00 each. 

1804. Ditto, ditto, liner graduation, an accurate registry, enclosed 
in brass cases, with cover, especially for geologists. Each, $6.00 

1S05. Ditto, ditto. German silver. 6.50 

1806. Ditto, ditto, mineralogical, mounted, as above, with a sliding 
and swing indicator, showing the angle of the drip. Each, $15.00 

ISO?. Ditto, ditto, very tine Geological, German silver-mounted 
watch case, hung on agate, witli a spring top, having also a 
sun dial arrangement, with universal meridian and registered 
meridian of chief cities in United States and Europe. Ea. $27.50 

1808. Coin pound B lr, for showing the expansion and con 
traction of two metals joined together, under the iniluence of 
extremes of temperature. Each, $1.00 





. 



1809 1810 

1809. Condensers, Liebig s form, of glass, small, unmounted. 

Each, $1.00 
fSlO. Ditto, ditto, large, mounted. ->.00 



OF CHEMICAL AND PHYSICAL APPARATUS. 



1811. Condensers, Liebig s form, japanned tin. Ea. $3.50 
1812. Ditto, brass soldered, mounted on stand. G.OO 
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. 16 93 A. 
1816. Condenser, Sehobers, new German invention. 



1693 A 




1817 



1819 






1821 



1818 1820 

1817. Condensing Tubes, with two stopcocks, as per 
illustration ; the wide part -J of an inch in diameter. 

Each, $3.00 

IS 18. Ditto, ditto, with stopcock on the bend. 3.00 

1819. Ditto, ditto, straight, with 3 stopcocks, as per 
illustratio Each. $4.00 

1820. Ditto, ditto, IT 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 stopcocks, complete, 
size, 7 x li 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 oz. capacity. 

.15 .18 .20 each 



1822 




1823 



54: 



E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 



24. Condensing Worm,, of block tin, enclosed in a zinc 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, " 3.00 

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. Each, $2.50 
1829. Cones, dissected. 2.50 
1830. Cone of Platinum, for supporting the filter in Bunsen s 
method of rapid filtration. Price, .75 






1831 



1831 



1832 




1833 1834 1835 

1831. Connecting or Drying Limb, Mits cherlich sor Liebig s, 

Each, .35 



1832. Ditto, Tube, for nitrogen apparatus. 
1833. Ditto, ditto, of glass, or three way tubes, Y shape. 
1834. Ditto, ditto, with three openings, T shape. 
1835. Ditto, Tubes, bent at different angles. 
1836. Ditto, ditto, with two or three lateral tubes. 
1837. Connectors of Brass, with male 

and female screws. Each, .3o 

1838. Ditto, ditto, \vith double male screw, 

without stopcock. Each, .35 

1839. Ditto, ditto, with double female screw, 



.50 
.25 
.25 
.15 

.50 




1837 



1838 1839 



without stopcock. (See also stopcocks and bladder pieces.) Ea. .30 



OF CHEMICAL AND PHYSICAL APPARATUS. 



55 



Connections, for batteries. See Binding Screws and 
Clamps. 

1840. Connectors, gallows fecreA\ ? Hare s. Each, $1.00 
1841. Ditto, unvulcanized rubber, 2 in. long. 

i u>- i in. bore. 

.40 .50 .60 doz. 

2. Connectors, vulcanized rubber. 1840 

i A i I in. 

5 .30 .40 .45 .55 uer doz. 





1854 



APPARATUS FOR MAKING CHLORINE. 



1843. Cooper s Mercurial Receiver. Each, .50 to .75 

Copper Foil. Uee 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. $6.00 

1847. Ditto, velvet, long and small. " .10 

1848. Ditto, chemical, carefully selected. 





Nos. 


to 5 


5 


678 


9 


10 




.06 


.07 


.08 .10 .11 


,13 


.16 


per doz. 




t 


{ 


1 


H li 


If 




H 




.18 


.20 


.22 


.25 .31 


.35 




.41 




If 


If 


1* 


2 in. 






^^. 




.50 


.55 


.60 


.65 per doz. 






A 


1849 


. Ditto 


, extra 


large 


and flat. Per 


doz., 


.75 


T 



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 
A i & t *t -iV tt i -A- $ liin.diam r. Per set, $4.50 



E. B. BKNTJAMIXS DESCRIPTIVE CATALOG TK 



1852. Cork Borers, set of <;. 

1853. Ditto, ditto., set of 3. 

The ordinary quality not kept in stock 
very best hardened brass. 
1854. Ditto, ditto, of steel, wooden handle. 



Each, $2.25 

1.10 

the above are of the 



$1.50 



1.7 



i 

1.80 



f Hi. 
2.00 each. 




Ditto, Files. See round files and rasps. 
1855. Ditto. Knife, for cutting corks. 

Each, .25 

1.S56. Ditto. Pressers, of cast iron. " .50 1856 1857 1858 
185 7. Ditto, ditto, of steel, usual style, Each, $1.00 

1858. Ditto, ditto, with fine teeth and extra nib. 1.25 

1859. Ditto, ditto, heavier. " 1.00 

I860. Ditto, Screws, for pocket, .25 

1861. Ditto, ditto, larger, with wood handles. " .40 

1862. Ditto Lined Tongs, of steel, for holding hot tubes. 
Each, $1.25 ^^ 

Cotton lamp-wick. See Wicks. 1863 

1863. Covers, convex, of glass, for covering Beakers, etc. 



3 

$2.50 



3.00 



4 
3.50 



4.00 



5 
5.00 



6 in. 
(5.00 per doz. 



1864. Ditto, glass, flat. 

2 2| 3 4 50 in. 

.50 .75 $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 2| 3 4 5 6 in. 

.75 $1.00 1.25 1.50 2.00 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, 

3456 in. 
$2.00 2.50 :>.<:> 3.50 per doz. 

Single ones, 20 per cent, higher. 

1868. Ditto, flat, round French plate glass, 2 in. Each, .25 

1869. Ditto, flat, square, ground glass. 

;i 4 5 6 7 8 9 10 in. 

.40 $1.00 1.50 2.00 2.40 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 



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. " .30 ; " 13.00 

1873. Cremometer, Chevalier, with jar and thermometer. 

$1.50 

IS 74. Ditto. Qut venne, with jar and thermometer. 1.00 

1875. Ditto, glass foot, graduated, to 12. .60 

1876. Crucibles, assay of unglazed porous clay, American. 

Per doz., $1.00 

1877. Ditto French, unglazed white porous clay. doz. $2.50 
1878. Ditto, Beaufay, French, soft, nearly white material, tall, nar 
row form, with spout, used for fluxing pots and for fusing enamel. 



1>77 



NO. 


HEIGHT. 


WIDTH. 


PRICE. 


1 


2 


If 


$0.05 rich. 


2 


2i 


11 


.05 " 


3 


2| 


n 


.07 " 


4 


3i 


2 


.09 


5 


31 


2i 


.10 " 


6 


i 


34 


.1 2 " 


7 





21 


lie " 


8 


5 


f 


.20 


9 


54 


3 


.22 


10 


6 


31 


.25 


12 


7 


4 * 


.50 " 


14 . 


84 


41 


.75 " 


16 


io| 


5* 


1.30 


18 


12 


6* 


2,00 



1879. Crucible, Boanfay covers, round. 

If to 3 4 to in. 

.04^ .08 each. 

1880. Ditto, ditto, triangular, assorted sizes 

Each, .Of 

1881. Crucibles, iron, with covers, 3 to 5 

ounces. Each, $1.00 

1882. Crucibles, plumbago, or black lead, 




187 ( J 



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, etc., not subject to 
crack, and may be used repeatedly for most metals. 

Nos. 1 2 3 4 6 7 8 10 12 14 16 18 20 
.20 .25 .30 .35 .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 IS o. 4, .02 extra, each number. 

1884. Ditto, cast iron. 



$2.50 



pts. 
2.75 each. 




1885. Ditto, porcelain, from the Royal Berlin fac 
tory, with covers, glazed inside and out, except the bottom, uni 
form thinness. 



000 

00 



1 

2 
3 
4 



DIAMETER. 


CONTENTS. 


PRICE. 


1 inch. 


i ounce. 


$0.10 each. 


1-^ " 

4 " 

it " 


j, a 

I " 
1 " 


.15 " 
.25 " 
.30 " 
.40 


z 


2 
4 


.50 " 

.60 


3| < 


8 " 


.75 



1886. Crucibles, Meissen, tall form, with covers, glazed through 
out. 



NO. 


DIAMETER. 


DEPTH. 


CAPACITY. 


PRICE. 


10 


- i * 

f inch. 


^ inch. 


15 grains. 


$0.10 each. 


9 


1 f 


40 


- .13 


8 


li " f " 


2-J drachms. 


.16 


6 


If 


If 


6| " 


.20 " 


5 


If 


If 


If ounce. 


.26 " 


4 


2i 


li " 


2 


.32 


3 


2i 


2 


3 


.40 " 


2 


2f 


2f 


4 " 


.50 


1 


3 


2f 


6 


.75 



. Crucibles, unglazed, semi-porcelain, round, tall, with lip 

and covers. 

Nos. 123456789 10 11 
Capacity, 

Price, .15 .20 .25 .35 .40 .45 .55 .65 .75 .85 $1.00 each. 



OF CHEMICAL AND PHYSICAL APPARATUS. ,">9 

1887A. Charcoal Moulds, oblong, of wood. Ea. $1.25 






1889 1891-92 1893 1895 1896 1909 

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 .45 .55 .65 each. 

1890. Ditto, unglazed, biscuit ware, conical form, perforated cover 
and gas reduction tube. 

Nos. 2 1 

.40 .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. 

H If in. 

.25 .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. 

i i f 1 H 2 oz. 

According to quantity. . Per gramme, .40 to .45 

1894. Ditto, Silver, 2, 4, 6, 8 ounces. 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. .05 

1898. Ditto, ditto, large fours. .14 

1899. Ditto, ditto, large fives. " .15 

1900. Ditto, ditto, round sixes. " .20 

1901. Ditto, ditto, triangular sevens. " .:*(> 

1902.--Ditto, ditto, ditto, eights. .35 

1903. Ditto, ditto, single No. 8. Each, .25 

1904. Ditto, single French No. 7. .25 

1905. Ditto, ditto, No. 4. Per 100, HO.OO 

1906. Crucible Covers, sand or hessian, small. Each, .10 

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



r.o 



K. B. BENJAMIN S DESCRIPTIVE CATALOGUE 



190S. Crucibles, roasting. Per doz., .75 

1909. Crucible Moulds, of boxwood, for makino- charcoal cru 
cibles, for quantitative blow-pipe assays. Each. .75 



C 






1916 



1J14 





1911 



1912 



1915 



1917 



$2.0u 
1.7ft 



1910. Ditto, ditto, Plattner s, of brass, in four pieces, for making 
small crucibles of clay. Each, $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. 

Each, .10 

Ditto,, Tongs. See Tongs. 
1912. Cryophorus, Wollaston s, double bulb. 
1913. Ditto, ditto, smaller, or single bulb. 
1914. Crystal Drainers, conical. 
3 4 

.50 .55 

1915. Ditto, ditto, hemispherical. 

345 
.30 .40 .50 

1916. Crystallizing Dishes, of glass, on three glass feet. 

3 3 3| in. 

.50 .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, " .75 

1918. Crystallizing Dishes, of porcelain, large oval shape, with 

cover. Each, $5.00 

Crystallizing ditto. See flat bottom evaporating dishes. 



5 in. 
.75 each. 



in. 
.70 each. 



OF CHEMICAL AND PHYSICAL APPARATUS. 61 

Crytallizing Kettles. See kettles. 

Cubic Centimetre Flasks. See Litre flasks. 




ft 



J919 



1923 1924 1926 1927 1930 




1928 1931 



TI 



1921 1922 1929 1932 ^ 

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. 123-45678 

1 i 1 1 1 If H If in. 
Price, .35 .45 .50 .60 . .75 .95 $1.25 2,25 per doz. 

1930. Cupel Holders, or Trays, of iron, containing 12 partitions 
for holding cupels when several assays are under examination. 

Each. $1.00 
1931. Ditto, Moulds, of brass, used in forming the cupel. 

Up to No. 5, $2.50 ; larger, $3.50 to 5.00 

1933. Ditto, ditto, of steel, Planner 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. 

1933. Cupping Glasses. French. Per doz., $1.25 

1934. Cups, annealing, American. " 1.00 

1935. Ditto, ditto, French. 2.50 

1936. Ditto, porcelain, for feeding the sick and infants, plain. 

Per doz., $2.50 

1937. Ditto, ditto, stout. 3.00 

1938. Ditto, ditto, covered, and swan neck. " 4.50 

1929. Ditto, for medicine, small. " 3.00 



K. B. BENJAMINS DESCRIPTIVE CATALOGUE 



1930. Cups tor Medicine, larger. 
1931. Ditto, ditto, mounted on feet. 
1932. Ditto, ditto, scoop shapr. 



Per doz. $3.50 

6.00 

" .75 




19:33 



1940 



1941 



1942 



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, porous. 

1934. Cutting Pliers, steel, ordinary .75 

1935. Ditto, ditto, extra strong, for crushing minerals. " $1.50 
1936. Cuvettes, or oblong drainers. " .75 

1937. Ditto, Daguerrian, of fine Royal Berlin -oorcelain, 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, 3fx6, 3fx8f. " .50 

1940. Ditto, plain, on glass foot, flanged tops. 

4 6 8 10 12 in. 

.35 .40 .50 .55 .60 each. 

1941 . Ditto, tall, straight side, and ring around the top, for observ 
ing color of gases, viz., chlorine, etc., 30 x 3 inches. Each, 

1942. Ditto, plain, on glass foot, with ring around the 
roughed for glass covers. 

5 6 8 10 12 13 15 
.30 .35 .37 .45 .50 .52 .55 

1943. Ditto, ditto, pouring, lipped, on gK*a 

5 6 8 10 12 13 15 20 in. 
.30 .35 .40 .50 .55 .57 ,60 ,70 each. 



20 in. 
<75 each. 



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 50 c. in. 

.70 $1.15 1.65 2.2-5 3.25 each. 





1946 



1949 



1950 



1954 



194(>. Ditto, ditto, with lip, graduated into cubic centimetres 

5 10 25 50 100 200 250 300 500 1000 centimetres. 
.50 .60 .75 $1.12 1.75 2.25 2.50 2.75 3.00 3.50 each. 

194:7. Ditto, ditto, French. 

250 c. c. $2.25 500 c. c. $3.25 each. 

194:8. 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 2.25 2.50 3.50 4.00 each. 

1949. Ditto, ditto, stoppered, or mixing bottles. 

25 50 100 200 500 

i i 1 1 1 

$1.30 2.00 2.25 2.75 3.75 

1950. Leslie s, 100 c.c. in 10. Each, $2.25 

1951. Ditto, graduated, of glass, pouring lip and wooden foot. 

250 500 1000 gr. 

5 5 

$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. 

.75 $1.00 each. 



1000 c. c. 
1 
4.50 each. 



K. H. 



S DESCRIPTIVE CATALOGUE 



1954. Cylinders, fur electric machines. 

10 to 12 13 to 15 IS in. 

$1.50 2,00 2.50 each. 

1955. Cylinder,, 100 fluid grains, graduated to 10 tluid grains 
stoppered. Each. $1.50 

1956. Ditto, 500 grains in grains, stoppered, glass f>ot. >.->.") 
1957. Ditto, 500 grs., without stopper, pouring lip, 1.50 

1958. Ditto, 1000 grains, 2.25 

Carre s Ice Freezer. See Ice. 

1959. Day and Night Thermometer, of glass. 4.uo 

1960. Davy s Safety Lamp, for coal miners, with kev. 5. ] 5 

1961. Decanting Jar, porcelain, with six tulmhr. ures and two 
knobbed handles, for the washing of powders and tlieir .separa 
tion into different degrees of fineness, and for decanting liquids. 

8 16 20 25 Ibs. 

$4.00 (5.00 7.50 9.00 each. 

62. Decanting Jars, for Collodion. 
>3. Ditto. Syringes, glass. Each, .25 to $1. J<> 
1964. Ditto. Tubes, Oin. long, -Jin. bore, both ends 
smooth, for decanting small quantities of liquid 
at a time, so not to disturb the sediment. Ea,, .05 
Decim :l Scales. See Centimetre Measures. 
Decip;*illon Measure. See Metrical, Equivalents. 
Decoction Strainers. See Emulsion Mortars. 
Decomposition of Water Apparatus . See AYater De 
composition. 
1965. Deflagrating Covers, of Tin. 

Each, .10 

1966. Ditto, ditto, with spoon. " .25 
1967. Ditto, ditto, and hook. " .20 
1968. Ditto, ditto, of brass. " .50 

1969. Ditto, ditto, with spoon. " .75 
1970. Ditto, hooks. - .05 

1971. Ditto, (globes, for burning phos 
phorous and oxygen gas. 





9 

$1.25 



12 
2.25 



1969 1970 1971, 1972, 197! 

15 in. 
3.25 each. 



Ditto. Jars. See Bell Jars. 

1972. Ditto. Stands, or tripods of Iron, to support the defla 
grating globe when reversed, Each. *!.<)(> 



OF CHEMICAL AN"D PHYSICAL APPARATUS. 



65 



1973. Deflagrating Taper Holder, or socket. .40 

1974.. Ditto, Cup,, on metallic stand, with heavy iron foot, for 
holding phosphorous, to burn under an inverted globe, contain 
ing oxygen gas. $1.50 

Dentists Furnace. See Furnaces. 

1975. Dessicators, of glass, composed of a small glass jaiv 
roughed on the top, and a flat ground glass cover. Each, $1.00 




1982 1983 1985 J981 

1 976. 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._Dit.to, 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 

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 

1981. Ditto, Schrotter s, to insert into the tubulure of an open 

mouth bell jar, for cooling substances in dry atmospheric air 

at ordinary atmospheric pressure. $1.50 

Dessicating Ovens. See Drying Ovens. 

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

4 A- 5^- G^ in. diam. 

1.30 1.50 each. 



E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 



1984:. Dessicatiug Plates, porcelain, perforated, 5 to 6 inches. 

Each, .75 

1985. Ditto, ditto, earthen, perforated, 3 to 5 inches, for drying 
crystals, etc. Each, .50 

1986. Ditto, ditto, porous, 3 to 54- inches. " 50 

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

1988. Ditto, ditto, Fresenius , for drying at 100 deg. Celsius, con 
sisting of a copper water bath, drying tube, a flask to contain 
.sulphuric acid, etc. $7.50 




1999 
Large, . 



2002 



$1.25 



Prices vary 



1989 1990 1995 

1989. Dialyser. Small, .50 

1990. Ditto, with jar fitted, extra. 

Diamond Models. See Crown Diamonds. 
Ditto, Jar. See Electric Diamond Jar. 
1991. Ditto, Sparks, for burning in oxygen 

according to the size and quality re<iuiivd. 
1992. Diamonds, for glass cutting, whole set of keys, complete. 

Each, $5.00 

1993, Ditto, for writing on glass, with 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. 

Each, $4.00 
2001. Ditto, ditto, plain. $2.50 to 3.50 



OF CHEMICAL AND PHYSICAL APPARATUS. 



67 



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




2002 



2005 



2006 



2012 



2003. Ditto, Meissen. . Each, .18 

2004. Ditto, Koyal Berlin, with oval bottom, 
flaring top. Each, .50 

2Q05. Ditto, Plattner s, flat bottom, flaring top. 
2 2i 4 in. 

.25 -30 .50 each. 

Ditto. See also Evaporating Kettles. 
2006. Dippers, hammered copper, without 
seam, round, iron handle, 1 litre capacity. 

Each, 12.00 
2007. Ditto, iron, for pouring metals in assay. 

Bowl, 3 in. 5 in. diameter. 

.40 .50 each, 

2008. Ditto, tinned, shallow, with long handles, for pouring. 




2007 



2008 



5 

.60 



.70 



6 in. 
.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 lO in. diameter. Each, $1.50 

2012. Ditto, earthen, deep, round, and flat bottom, for holding 
acids and acidulous solutions. Imported to order. 



10 
$10.00 



15 
12.00 



20 gallons. 
15.00 each. 



2013. Ditto, porcelain, round, with lip, for receiving the ashes of 

the burning filter. Each, $1.00 

2014. Ditto, ditto, smaller, without lip. " .75 



68 



F. B. BENJAMIN S DESCRIPTIVE CATALOGS: 



2015. Dishes, Draining, porcelain, to stand under bottles con 
taining acids or other liquids. 

2 24 2f 3 3 4 44 5 in. 
.08 .10 .12 .15 .18 .20 .22 . 25 each. 

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 bv means of a cork. 

1 2 litres. 

.60 .75 each. 

2018. Ditto, ditto, consisting of a separately funnel fitting into 
a glass receiver by means of a tightly fitting cork. 

pts. qts. -3- gall. 

$2,50 3.50 ^4.50 each. 




2019 



2021 



2022 



2023 



2019. Ditto, ditto, with ground joint of light blown glass, without 
stopcock, 6 ounces. .75 

2020. Ditto, ditto, of glass, consisting of separatory funnel, fitting 
into a glass receiver with ground joint. 

pts. qts. 4 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. i gall. 1 gall. 

$6.00 7.00 8.00 12.00 each. 



OF CHEMICAL AXI) PHYSICAL APPAKATt S. 



69 



2022. Displacement Apparatus, Griiibourg 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 
stopcock at foot; capacity of receiving vessel, 1-J 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. 





2024 



20-26 



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 

$12.00 16.00 

2025. Ditto, ditto, nickleized. 

1 2 

$14.00 19.00 



3 

20.00 



5 galls. 
30.00 each. 



10 galls. 
80.00 each. 



3 5 galls. 

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. 

1235 

$24.00 32.00 40.00 60.00 

Ditto, ditto, Mtirrle, 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. 2027 




70 



E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 







2029 2031 2032 2033 

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 piece 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 






2040 



2041 



2034 2035 

2034 Ditto, ditto, vase shape. 
2035. Dome, porcelain, for Bunsen s lamp. 

Douceleur Apparatus. See Apparatus. 

Crystal Drainers. 
2036. Drawing Tools, in a small box. containing dividers, 

pencils, etc. $1.00 to 4.00 



2041A 

10.00 
1.00 
Drainers. See 



OF CHEMICAL AtfD PHYSICAL APPARATUS. 



71 



2037. -Drawing Curves. Each > ^ 

5*038. Ditto, Protractors, horn. " .75 

2039. Dropping Glasses, Schuster s, plain. " .20 

2040. Ditto, ditto, with ground stopper. " .25- 

Ditto, Bottles. See Acid Bottles. 

2041. Ditto, Pipette, with bulb top, covered with rubber film,, 
graduated 100 c.c. -75- 

2041 A. 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 








2044 205-2 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 

2045. Ditto, ditto, soft, soldered. 

8 10 12 inchs. 

$9.00 13.50 18.00 each. 

2046. Ditto, ditto, 8 in. with thermometer. " 10.00 

2047. Ditto, ditto, 10 inch. " 15.00 

2048. Ditto, 12 inch. " 19.00 

2049. Ditto, ditto, nickleized. Each size additional. 2.00 

2050. Ditto, ditto, of tin. Each, 2.50 

2051. Ditto, ditto, porcelain, for drying 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 steady the pressure of the mercury. 

Each, $3.50 



E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 



. -Drying Bath Electrical Regulator, for keeping the 
heat of the water hath constantly at an even temperature. 
2055. Ditto, Bottles, Barker s, small size, Each, $1.00 

2056. Ditto, ditto, large size. 1.50 

2057. Ditto, Oven, or hot air bath, having single walls and de 
tached perforated ; helf en legs, 8 inches. $7.00 





2059 




2058 20JO 

2058. Ditto, ditto, with thermometer. $8.50 

2059. Ditto, ditto, Kammelsberg s conical shape, of copper, hard, 
soldered, having detached shelf. 

Small size, larger size, 

$3.00 4. each. 

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





2061 2062 

2061. Ditto. Tubes, Lieb:/s. Each, .50 

2062. Ditto, ditto, Mitscherlich s. " .60 

2063. Druggist Mill, for grinding roots, herbs, etc. $J >.0<) 

2064. Dutch Metal. Per book, .10 

2065. Dyers Clot l, for m;>nhiiiiiting. Per yard, $2.00 
Dye Pots. See Deep Casseroles. 

Earthen Dishes, perforated. See Dishes, Dessicating 
Apparatus. 



OF CHEMICAL AND PHYSICAL APPARATUS. 



73 




2066 



ELECTRICAL AND GALYANIC APPARATUS. 

HOLTZ S wonderful Induction Electrical Machine as improved 
by BOUCHARD, and first brought into the United States for sale, 
by myself, in 1809. It is the most wonderful discovery, in regard 
to the length of the spark yet known a spark 6 in. long having 
boon obtained from a 13 in. plate machine, and glass perforated 
1| 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 10 in. It was the result of 
the combined intelligence of Messrs. Holtz, Poggendorf, Kienz, and 
Dove; was manufactured expressly for me by Mr. Borchard, and is 
believed to be the best single machine of the 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 
savans in Europe, and I presume that it will not be questioned but 
that those made by the inventor HIMSELF must inevitably be far 
superior to any imitations or copies; nevertheless, should my cus 
tomers desire them, I am prepared to furnish imitations of th ; ", 
celebrated machine as ]<>\v as any house in America. It should 3 
borne in mind that these machines, with the extra appurtenance, 
can illuminate large Geissler tubes, pierce thick glass, show rotation 
by electricity, manufacture Ozone, etc. They are light and portal le. 
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 live hours. The new and 



74 



E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 



ingenious collecting and condensing apparatus, invented by 0. 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. 

2067. 

2068. 

2069. 

2070. " 



V 




$225.00 
175.00 
140.00 
100.00 
65.00 



2071 



2071. Double machines, Borchard s make. 

2072. Dielectric Machine, as constructed by M. Carre, having 
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 

















; 






















; 


o 















"X 







t-> <4 























X 

(T> 






O 




















t 





























o 












-, 


-t-i 














^ 




M " 
















1 1 


3 

3 


M 

-H 






o 












i 


.i_> 


















t3 


& 


















G2 


GO 

*"" 7 

B 


















. 









X 









^.3 O 






X O 



, 



74 

in; 

Bi 

pc 

de 

tli 

21 

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2< 

2 

9 



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03 



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05 












OF CHEMICAL AND PHYSICAL APPARATUS. 



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 machine will 
charge to overflowing a battery of 12 large jars, etc. It also 
performs the usual experiments of large coils, etc. 

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






2072 2080 ( 2087 

2073. Dielectric Machine^ No. 1, plates 32 to 44 millimetres. 

$125.00 

2074. Ditto, No. 3, " 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 

2076. Ditto, 20 inches. 45.00 

2077. Ditto, 16 " 35.00 

2078. Ditto, 12 " with japanned prime conductor. 25.00 

2079. Electrophorus. 9.00 

2080. Pith Ball Electrometer. 1.00 

2081. Gold Leaf 6 . o 

2082. Head of Hair. 1.50 

2083. Leyden Jar, pint. 1.50 

2084. Ditto, ditto, quart. 2.00 

2085. Ditto, ditto, $ gallon. 3.75 

2086. Ditto, ditto, 1 gallon. 3.25 

2087. Set of Leyden Jars. 6.50 



E. B. BEXJAMIXS DESCRIPTIVE CATALOGUE 



Electricity. Continued. 
2088. Electrical Batteries, in walnut boxes. 

4 6 

$11.00 16.00 

(Other sizes in proportion.) 



2 qt. jars. 
28.00 each. 




2088 



2(181) 



2090 



2099 



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 mov.ible 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. 
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 

2111. Dancing Images, per pair, 1-00 



2101 

Each, $4.00 
2.25 
5.00 
10.00 
2.50 
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 






tr 



OF THEMICAL AND PHYSICAL APPARATUS. 77 

Electricity. Continued. 





2J03 2108 2112 

2112 .Electrical Orrery. 
2113. Pith Balls, per dozen, 
2114. Electrical Sportsman, Jar and Bird. 
2115. Ditto, Pistol. 
2110. Miser s Plate. 

2117. Rod of Glass, for illustrating vitreous excitation. 
2118. Ditto, Shellac, for ditto, ditto. 
2119. Galvanometer, Astatic. 
2120. Ditto, Tangent. 



2121. Ditto, Sensitive. 



$35.00 to GO.OO 






2122 2123 

2122. Thermo Electric Pile. 
2123. Contracting Helix. 
2124. Helix on Stand, 3 poles. 
2125. Ditto, with ring armature, or magic circle. 



2126 



$35.00 
5.50 
4.50 
6.00 



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. $7.50 




2133 





2140 



2140 



2130. 
2131.- 
2132.- 
2133. 
2134.- 
2135.- 
2136.- 
2137. 
2138.- 
2139.- 
2140.- 
the 
2141.- 



Ditto, ditto, ditto, -J in. spark. 
Ditto, ditto, ditto, i in. 
Ditto, ditto, ditto, -J- in. 
Ditto, ditto, ditto, 1 in., with contact breaker. 
Ditto, ditto, ditto, 2 in. " 

Ditto, ditto, ditto, 4 in. " " 

Ditto, ditto, ditto, 6 in. " u 

Ditto, ditto, ditto, 9 in. " " 

Ditto, ditto, ditto, 12 in. " " 

Current Changers. 



$12.00 

15.00 

30.00 

60.00 

100,00 

200,00 

300.00 

400.00 



" " 500.00 

Each, $3.50 to 10.00 
Geissler s Tubes, plain, each tube marked with the name of 
gas it contains. Prices, from $1.25 to 30.00 

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



OF CHEMICAL AND PHYSICAL APPARATUS. 



Electricity. Continued. 

214-2. Ditto, Vacuum Tubes, in which the vacuum is so perfect 

that the current will not pass. Each, $6.00 

2143. Ditto, tubes in form of a rose. $6.00 to 18.00 

2144. Ditto, ditto, form of a lyre. Each, 7.00 

2145. Ditto, ditto, form of a star. " 5.00 

2146. Ditto, ditto, form of a 17, very brilliant. " 9.00 

2147. Ditto, ditto, form of a Marguerite. " 5.50 





2150 2150A 

2148. 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. $5.00 

2150. Geissler s Tubes, Reflectors, showing small tubes, and multi 
plying the number by reflection. Each, $5.00 

2150A.-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 CATALOG I* K 



Electric Batteries. 

Salts of Mercury for Batteries. See Chemicals. 





2151 2152 2162 

2152. Bunsen s large Cells, with rolled zinc plates in. thick and 
French sawed carbons, jars 8 in. high. Kach. 85.00 

2153. Ditto, ditto, ditt,>, jars G :;.:><> 

215-4. Ditto, ditto, ditto, jars 5 
2155. Daniel :] Batteries. 
2150. Grove u ditto. 
2157. Smee s ditto. 



3.00 
2.50 
2.50 




2161 

2158. Leclanche s Constant Battery, consisting of a rod of car- 
hon placed in a porous pot, which is lien packed tightly with 
a mixture of peroxide of manganese ;:nd coal, outside of which 
is a glass jar, in a corner of which id 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. 



81 



Electricity. Continued. 

2159. American Bichromate Battery, improved pattern, quart 

cells. $7.00 

2160. Ditto, ditto, pint 6118. 5.00 





2163 

2161. -Six cells of the larger battery, with connections complete, 
arranged 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, cleanly, 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 readilv 
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- 



82 E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 

Electricity. Continued. 

ing apparatus with the battery ; the power of this battery com 
bined is about equal to that of ten Bunseirs 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. $50.00 

2165. Ditto, ditto, three larse cells. 65.00 




2166 

2166. Ditto, Medico-Electric, for use of Physicians and paralytic 
persons. $12.00 

2167. Electro-Thermal Battery, of bismuth and antimony, oblong 
shape, with jointed support. . $30.00 

2168. Electrical Lamps, Duboscq s, with clock-work and 
reflectors, complete. 

2169. Ditto, ditto, Serrm 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, etc. Each, 15.00 
2176. Ditto, Noebel s Apparatus, for washing soils in analysis. 

Each, $4.50 

2177. Ditto, ditto, with support. 5.50 

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. " 1.25 
2181. Ditto, for enameling gold transparent blue, green, ceru 
lean blue, lapis lazuli, opaque green, and transparent yellow. 

Per oz. $1.50 




2176 

2182. Ditto, ditto, turquoise. Per oz. $3.00 

2183. Ditto, ditto, transparent red. " 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. 
2188. Ditto, Plates, of refractory clay. 



.50 



.15 



.18 



.20 



.25 each. 




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. 1.00 

Eprouvettes. See Test Glasses, and Specimen Tubes. 
Erdmann s Float. See Burette Swimmers. 

2193. Ethei Distilling Apparatus, consisting of a glass 
retort, receiver, alchohol reservoir, etc., capacity of retort, 

2 qts. 
5.50 

Ether Bottles. See Bottles. 

2194. Ditto, Extraction Apparatus, Bohemian, capacity of 
receiver fc gallons. Each, $14.00 

2195. Ditto, ditto. See also Displacement Apparatus. 
2196. Eudiometer, Bunsen s, 500 millimeters in -. $3 .50 



1 qt, 

$3.85 



1 gall. 



2 galls. 
10.00 each. 



86 



E. n. BENJAMIN S DESCRIPTIVE CATALOGUE 




2196 



2199 2200 2201 2202 

2197. Eudiometer, Hoffman s, V shape, mounted. $7,00 

2198. Ditto, Large Lecture, Hoffman s, mounted on stand. 15.00 
2199. Ditto, Hoffman s, with two parallel limbs, one sealed and 

one open. $2.00 

2200. Ditto, ditto, with parallel limbs, 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, lire s, straight, 200 c. c. in |. 2.00 

2204. Ditto, ditto, U form, 60 c. c. in *. 3.50 



OF CHEMICAL AND PHYSICAL APPARATUS. 87 

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





2206 220b 2210 2213 2216 

2206. Ditto, ditto, ditto, lipped, in nests of 6. 1.50 

2207. Ditto, ditto, of iron, glazed inside and out, with lip, deep 
and hemispherical. 

567 in. 
$1.25 1.35 1.75 each. 

2208. Ditto, of platinum. 

2 2 3 in. 

According to quantity, per gramme, .35 to .40 , 

2209. Ditto, silver. 

2 2| 3 in. Per oz., $4.50 

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

Nos. 00 01234567 

Diam. H oz. 2 3 4 6 8 10 14 24 

.18 .22 .28 .35 .40 .45 .62 .75 .95 

8 9 10 11 
45 oz. 2 qts. 3| 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, Avithout lip, 3 inches diameter. 

Each, .20 
2214. Ditto, of glazed, Royal Saxon, without lip. 

2 in. 3 in. 

.15 .35 each. 

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

Nos. 5 4 3 2 1 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. 1234567 
1 H 3 4 7 10 16 oz. 

.22 .30 .35 .42 .50 .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 55 70 84 97 110 m.m. 

.25 .30 .40 .50 .60 .75 each. 

2219. Full sets of the above. $2.50 

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

Nos. 1234 
.15 .18 .20 .25 

2221. Full nests of above. 

2222. Ditto, ditto, deep hemispherical. 



5 
.30 



6 
.40 each. 

$1.00 



Nos. 1234 
H 2 3 4 
.15 .20 .25 .30 

2223. Sets of 6 of the above. 
2224. Ditto, 9 " 



2225 



5 

6 

.35 



6 

8 

.45 



10 
.50 





2218 



2226 



9 

10 oz. 
.70 each. 

$1.25 
2.75 



2227 



2225. Ditto, ditto, watch-glass form, stouter, glazed inside. An 

excellent dish for quick evaporation. 

Nos. 6 7 8 9 10 11 12 13 14 15 16 
Cap y 

".45 .55 .65 .75 .8511.00 1.30 1.75 2.10 3.50 5.00 ea. 

2226. Ditto, ditto, Thuringian semi-porcelain, lipped, and heavy 
rim around the top. 

Nos. 8 9 10 11 12 13 15 16 18 
24 oz. 1 qt. li 2 31 gall. 235 
.75 .85 $1.00 1.20 1.75 2,10 3.50 5.00 9.00 each. 

2227. 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. 

2228. Ditto, with rim around the top, sharp lip. 

11 11| 12in. 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 travs of lead, small. " .50 



OF CHEMICAL AND PHYSICAL APPAKATUS. 



89 



. Evaporating Kettles. 

2 
$3.50 

Exsiccators. See Dessicators. 



5 gallons. 
8.50 each. 




2240 



2238 



2232. Eye Baths, of glass. Each, .25 

2233. Evolution Flask, funnel and deliv 

ery tube (without delivery flask). $1.25 

2234. Eye Models, for showing the reflec 
tion on the eye lenses, with the use of 
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. 

4567 in. 
.20 .25 .35 .40 each. 

2237. Ditto, triangular. 



3 
.18 



4 
.25 



5 
.30 



6 
.40 



8 in. 
.50 each. 



2238. File Handles. Each, .10 

2239. Filtering Apparatus, porcelain. $8.00 
2240. Ditto, ditto, Plantamours, tin bath for 

hot water. 82.50 

2241. Ditto, ditto, of copper, with porous 

strainer $1.25 

2242. Ditto, ditto, Beale s quick 75 

2243---Ditto, ditto, for rapid filtration, bv 




2234 




2243 



Pr f". 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, etc., 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 
lias 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 improve 
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 piuchcock 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 a sewer 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 Avater." 

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. " .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 3.00 




i 



y 

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 

7i 10 13 15 17iin. 

.40 .55 .75 $1.00 1.25 per pack. 

Per 12 sheets, Nos. 80 100 

26 38 in. 

.75 $1.00 

2255. Ditto, ditto, white, in packs of 100. 

2 3 4 5 6 7i 15 16^ 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. Ditto, 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, 05, per ream, $9.00 



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, C, laid, 15|xl8|, .40, 4.50 

2263. Ditto, ditto, D, wove, 16x19, .40, 4.55 

2264. Ditto, ditto, " E, wove, 15xl9|, .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, etc. 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. 

$8.00 ^ 

2269. Fire Clay. Per Ib. .05 

2270. Fittings, for evolution bottles. Each, .30 [ 

2271. Ditto, for wash bottles. " .10 

2272. Ditto, for Woolf s bottles. .15 

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 

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 j ^om. 




II 


1 

.20 


2 
1.30 


4 
1.60 


6 
2,25 


8 
2.50 


3 


12 

.00 


16 
3.25 


24 .32 
3.75 5.50 


oz. 
per 


doz. 






i 

.75 




1 

$1.25 






2 
1.75 




3 gall. 
2.00 each. 







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



OF CHEMICAL AND PHYSICAL APPARATUS. 







22 

2278.- 



2279 



2280 



2281 



2290 



gall. 



-Flasks^ round bottom, vial mouth, pear shape. 

8 16 32 oz. 

$3.00 4.00 6.00 10.50 per doz. 

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

Ito2oz. 4 8 16 32 -J gall 2 

.12 .15 . .20 .25 .35 .75 $2.00 each. 
$1.20 1.50 2,00 2.50 3.50 7.50 20.00 per doz. 

2280. Ditto, best Bohemian glass, flat bottom, pear shai)e, 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. 

1 i 1 oz. 

.60 .75 $1.00 per doz. 

2284. Ditto, best German "Florence/ vial mouth. 

2 4 8 16 " 24 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 oz. qts. 

7-j $1.00 each. 

2286. Ditto, ditto, ditto, with tubulature on either side of the 
bulb. 

i 1 gall. 

$1.50 2.25 each. 

2287 Ditto, Bologna. 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. 

.35 .40 .50 .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 G-as Burners. 




1291 2293 2292 2294 2296 2298 2299 2301A 2300 2302 

2291. Forceps, brass, ordinary, plain. Each, .50 

2292. Ditto, ditto, stout. .75 

2293. Ditto, ditto, ends bent in parallel directions, with ivory 

tips. Each. .75 

2294. Ditto, jewelers, polished steel, square taper jaws. " .75 
2295. 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. .25 

2299. Ditto, ditto, form No. 1. .50 

2300. Ditto, ditto, form No. 2. .50 

2301. Ditto, ditto, form No. 3, German silver point. " .75 

2301.A-Ditto, steel, form No. 4, hardened rubber end. " .75 

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



OF CHEMICAL AND PHYSICAL APPARATUS. 



95 




2316 2314 2313 

2303. Forceps, steel, platinum point, ordinary German form. 

Each, $1.50 

2304. Ditto, ditto, ditto, German silver. " 1.75 

2305. Ditto, German silver, French shape, platinum ends. " 3.00 
2306. Ditto, steel, with extra heavy platinum points. " 2.50 
2307. Ditto, heavy brass, platinum ends. " 1.00 

2308. Ditto, wire, platinum points. .75 

2309. Ditto, for breaking glass, heavy, of steel. " .75 

2310. Ditto, for bending wire, round ends, Stubb s. " 1.25 

2311. Ditto, for cutting wire. " .75 

2312. Ditto, brass, with spring. " .75 

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, etc. 
2315. Frames, for the charts and photographs mentioned in 

this catalogue, according to the styles required. 
2316. Freezing in vacuo, Leslie s apparatus. $3.00 to 6.00 



96 



E. B. BENJAMINS DESCRIPTIVE CATALOGUE 



I/ 





2317 



2319 



2321 



2317. Funnels, American glass. 
2 oz. 4 8 16 32 
.10 .15 .18 .25 .35 



gall. 
.50 



2323 



1 gall. 
.75 each. 



2318. Funnels, best Bohemian glass, formed to an angle of 60" 
all the edges ground evenly. 

li 2 2| 3 . 3| 4 44 5 6 in. 

.18 .20 22 28 .30 36 .44 .60 each. 



.15 



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 2 34 Sin. 

.20 .25 .30 .40 .50 each. 

2320. Ditto, ditto, fluted or ribbed, best imported ground tops. 

2 3 4 5 in. 

20 .30 .40 ; .50 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. 

23456 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 oz. 

.35 .40 .50 65 .80 each. 

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

468 in. 
$2.50 3.25 4.50 each. 



OF CHEMICAL AKD PHYSICAL APPARATUS. 



97 




2326 2329 



2331 2334 



2335 



2qts. 
4.50 each. 



2325. Funnels, separatory, globe shape, stoppered. 

1 qt. 

$3.50 

2326. Ditto, ditto, globe shape, stoppered, small, with 
funnel tube for separation and use in volumetric an 
alysis. Each, $1.25 
2327. Ditto, ditto, ditto, hemispherical, of light blown glass. 

Each, $1.00 

2328. Ditto, ditto, conical, formed on an angle of 60, stout Bohe 
mian glass. Each, $1.50 
2329. Ditto, tubes, glass, with stopcock between the cone and 
the tube. Each, $1.00 
2330. Ditto, ditto, glass, with plug stopper ground into the neck: 
of the funnel. Each, $1.00; 
2331. Ditto, ditto, ordinary, conical, stout glass, length of stem, 
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 
2336. Ditto, ditto, ditto, 2 bulbs, 30 inches. Each, .40 




E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 



233?. Funnels, tubes. Welter s, 3 bulbs. Each, .50 

2338. Ditto, ditto, ditto, conical top, 1 bulb. .40 

2339. Ditto, ditto, ditto, 2 " " .50 

2340. Ditto, ditto, ditto, " 3 .60 

234-1. Ditto, ditto, ditto, short stem, thistle top, % and 3 bulbs. 

Each. .50 






2344 




234-2 



2343 



234(3 



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. " .50 

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 

.40 



4 
.55 



4* 

.70 



5* 

.90 



6 in. 
$1.00 each. 



2346. Ditto, ditto, filtering, with staves inside. 

3 3f 4J 5i 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 4| 5 6 in. 

.40 .50 .60 .70 $1.25 1.50 each. 

2349. Ditto, ditto, ditto, with large holes to support cloth filters. 

3| 4| 5 54- 64- 74- in. 

.50 .55 .80 #1.00 1.50 1.75 each. 

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



OF CHEMICAL AKP PHYSICAL APPARATUS. 



99 



2351. Funnels, gutta percha, conical. 

3f 4i 4f 5| 7 

.60 .75 $1.00 1.50 1.75 

2352. Ditto, ditto, spherical, -j- gallon. 

Ditto, for hot filtration. See Filters. 
Funnel Supports. See Supports. 



n. 
2.00 each. 

Each, $5.00 



FURNACES. 

2353. Furnace gas, Erdmann s, of fire clay, with tripod stand, 
without burner. .75 






2353 



2357 



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, 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. BEXJAMIX S DESCRIPTIVE CATALOGUE 



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



Nos. 1 
$15.00 



2 
20.00 



3 

25.00 



35.00 each. 




2359 



2360 



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, etc. 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, 
having the jets thrown to a common center; the supply of 



OF CHEMICAL AXD 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 lire 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 2 

$40.00 60.00 each. 




2360 





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. 123 

$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 Bunseirs 
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 iifches 
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. 120.00 




2366 





2367 

2366. Furnace and Lead Basin, for etching, with hydrofluoric 
acid 011 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 furnace, to be put in the place of it. A set 
of cast iron rings accompanies the furnace, and the doors are 
suitably stopped. It is a very convenient furnace for all the 
purposes of a laboratory, such as melting, distilling, evapor 
ating, cupelling, etc. $40.00 





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, lor 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. Grlass Tubes for ditto, heavy, strong, hard glass. 1.00 



jKj 

si***. ;$ |; K:H4fc:rJ%|yp : i-jH^ 




2375 



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. Galactoineter, 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 hydrogen, ordi 
nary form, with safety tube in top. $0.00 





2396 2397 

2397. Ditto, ditto, Bohemian, with double concentric and inner 

stoppers. $7.50 

2398. Ditto, ditto, small, with safety funnel in top. 3.50 

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 tuoe, for the 

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

The bulb, on thexignt of the illustration, is half filled with lumps of 
sulphide of iron ; the other bulb is partly fi .led with diluted sulphuric acid ; 
the apparatus being placed 011 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, glasw tube, into the washing flask, and thence 
outward. When the apparatus is not in use, it is simply necessary to elevate 
the bulb containing the sulphide of iron and Hose th pirn-brook on the 
flexible tube. 



OF CHEMICAL AND PHYSICAL APPARATUS. 



107 





2401 



2400 240^ 2403 

2401. Price of the glass part of the above apparatus, without 
wash Lottie. 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 hell shape gas holder, leaden tripod, stopcock, and 
gallow-screw connector. 

Height, 9 10i 13 16 19 in. 

$10.00 12.00 15.00 20.00 25.00 each. 

2404. Ditto, for sulphuretted hydrogen, 

by the employment of asbestos. $1.00 

2405. Ditto, ditto, for Oxygen, of copper, 

double bottom, and iron top, carefully 

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 japanned zinc, with bells, complete. $70.00 




108 



E. B. BENJAMIN S DEScuiFrrvE CATALOGUE 





2406 

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.jo 

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. 

25 in i 50 in i 100 in 4 200 in 1 

$1.25 1.75 2.00 2.50 each. 




OF CHEMICAL AXD PHYSICAL APPARATUS. 



109 




2410 



2419 



2420 



241S. Gas Tubes, Bmisen 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 Ib. 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, J inch thick. 

3 4 6 8 9 10 12 in. 

.25 .35 .60 $1.00 1.25 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 ]:. ]$. HENJAMIN S DESCRIPTIVE CATALOGUE 





2436 




2437 

. Glass Pieces, small broken pieces. Per lb., .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. Each, .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. 



i 

.12 



1 
.15 



2 

.20 



4 
.25 



8 
.40 



16 
.50 



32 ox. 
.75 each. 



2440. Graduates, registered minims, Ger 
man, vase form. 



60 
.50 



120 minims. 
.75 each. 



2441 



-Ditto. English form, glass foot. 

60 120 minims. 

.50 .75 each. 




2440 



2441 



OF CHEMICAL A^D PHYSICAL APPARATUS. 



Ill 



2442. Graduates, registered, English shape. 

1-248 16 32 oz. 

.25 .30 .45 .60 $1.00 1.50 each. 




2445 



2446 



2447 



2448 



2449 



2450 



32 OZ. 
2.00 each. 



2443. Ditto, ditto, tumbler shape. 

4 1 2 4 6 8 16 

.35 .40 .50 .65 .70 .80 $1.50 

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 
2555. Hand-bladder Glasses. Each, .75 to $1.00 

Hardness of Minerals, tests for. See Minerals. 



112 



E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 




2456 



2452 





2455 2457 2459 

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. 

. Holders, for caustic, ivory, with silver ends. Each, $4.00 
2457. Ditto, for platinum spoons and wire. " .60 

Ditto, for burettes, supports, test tubes, etc. See Supports, 
Test Tubes, etc. 

2458. Holsterique 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 males, $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 Hydrostatics. See collection at the 
close of this book. 



OF CHEMICAL AKD PHYSICAL APPARATUS. 113 



HYDROMETRY. 

2461. Hydrometers, for Acids and aceteous fermentations, 

Balling s. Each, $1.25 

2462. Ditto, Otto s, to 12, in fourths. 1.25 

2463. Ditto, for Acids, Beaume s, 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 i i 

.75 .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. " .75 

2467. Ditto, ditto, ditto, in tin cases, No. 204. .60 

2468. Ditto, ditto, ditto. " .50 

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. " 50 

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 " " " 2.00 

2475. Ditto, for Brine, pasteboard cases. " 1.00 

2476. Ditto, for Coal oil, 30 to 50. .75 

2477. Ditto, up to 80. 1.00 

2478. Ditto, Densimeter. 1.00 

2479. Ditto, Ether, Beaume s scale. .75 

2480. Ditto, ditto, pese, French, No. 2585. 1.00 

2481. Ditto, for Fluids heavier than water, to 70. Each, .75 
2482. Ditto, ditto ditto, .with thermometer and specific gravity 

scale, 1000 to 2000. Each, $2,00 

2483. Ditto, for Fluids lighter than water, 10 to 40. 75 

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, etc. Each, 82.00 

2486. Ditto, for Milk, ordinary style. .50 

2487. Ditto, ditto, to 25. .75 

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. " 1.50 

2492. Ditto, for rich Oils, French, Lefebre, with thermometer in 

pasteboard cases. Each, $2.00 

2493. Ditto, ditto, ditto, 22 to 50. 2,00 

2494. Ditto, for Salt. " .75 

2495. Ditto, Saccharometers, French, for testing syrup, in 

pasteboard cases. Each, .75 

2496. Ditto, ditto, Beaume s, for Syrups and Sugar. " .75 

2497. Ditto, ditto, Balling s, for " " $1.00 

3498. Ditto, ditto, with thermometer enclosed. " 2.00 

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 

2504. 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 



OF CHEMICAL AND PHYSICAL APPARATUS. 115 






2511 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. " 11.50 

2511. Ditto, ditto, six " 14.00 

2512. Ditto, ditto, seven " " 16.00 

2513. Ditto, Twaddle s, in sets of six spindles. 

No. 1, deg. 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 " " " 1370 to 1510 

No. 5, 102 to 138 " " 1510 to 1690 

No. 6, 138 to 180 1690 to 2000 

The entire set of six, with spherical bulb. Each, $6.00 

2514. Ditto, sets of six, with cylindrical bulb. " 5.00 

2515. Ditto, single spindles. " 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. " .25 

2520. Ditto, for Vinegar. " .75 

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. 4.00 
2524. Ditto, ditto, brass, finely adjusted with a set of weights, all 
in case, without jar, complete. Each, $6.00 



114 E. B. BENJAMIN S DESCRIPTIVE CATALOGUE , 

2485. Hydrometers, for petroleum, etc. Each, $2.00 

2486. Ditto, for Milk, ordinary style. " .50 

2487. Ditto, ditto, to 25. " .75 

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. " 1.50 

2492. Ditto, for rich Oils, French, Lefebre, with thermometer in 

pasteboard cases. Each, $2.00 

2493. Ditto, ditto, ditto, 22 to 50. " 2.00 

2494. Ditto, for Salt. .75 

2495. Ditto, Saccharometers, French, for testing syrup, in 

pasteboard cases. Each, .75 

2496. Ditto, ditto, Beaume s, for Syrups and Sugar. " .75 

2497. Ditto, ditto, Balling s, for " " $1.00 

2498. Ditto, ditto, with thermometer enclosed. " 2.00 

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 

2504. 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 



OF CHEMICAL AND PHYSICAL APPAKATUS. 115 






2511 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. " 11.50 

2511. Ditto, ditto, six " 14.00 

2512. Ditto, ditto, seven 16.00 

2513. Ditto, Twaddle s, in sets of six spindles. 

No. 1, deg. 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 " 1370 to 1510 

No. 5, 102 - to 138 " " " 1510 to 1690 

No. 6, 138 " to 180 " " " 1690 to 2000 

The entire set of six, with spherical bulb. Each, $6.00 

2514. Ditto, sets of six, with cylindrical bulb. " 5.00 

2515. Ditto, single spindles. " 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. " .25 

2520. Ditto, for Vinegar. " .75 

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. " 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. BENJAMINS DESCRIPTIVE CATALOGUE 



Hydrogen Lamps. See Doebereiner s Lamp. 
2525. Hygrometers, Daniels on polished stand and gilt marks. 

Each, $9.00 

2526. Ditto, Mason s, 011 boxwood stand. " 4.50 

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 tine divisions. Each, $12.00 




2530 2534 2539 

2530. Ice Freezer, Carre s apparatus, imported only to order. 

$150.00 

It consists of a generator* 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 Carre 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. 7.50 

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 cop 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. .40 

2536. Jars, Battery, glass, cylindrical shape and flat bottom. 
4x4 4x5 4^x5| 4x6 4^x6 5^x8 in. 
.40 .45 .50 .55 .60 .75 each. 

7x8 6x9 8x12 9xl2 9x15 in. 

.80 .85 $2.00 2.50 3.00 each. 

^537, Ditto, ditto, fluted, for bichromate potash solution. 

Pints. .25 quarts, .50 each. 

. Ditto, cold cream, French, smooth, rounding and highly 

glazed inside. -^12 oz. 

.75 .85 $1.00 dozen. 

Ditto, chloride of calcium. See Chloride of Calcium. 





2540 2542 2543 2544 2550 

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 18f 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. c. 

$2.00 3.50 each. 

Ditto, Decanting. See Decanting 

. Ditto, hydrometer, French, swelled top, polished box-wood 
feet. Each, .50 

. 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 

. Ditto, ditto, with glass foot and ring around the neck r 
ground top to receive glass plate. 



6xlf 8xlf 10x2 lOixlf llixlfin. 
.30 .35 .40 .45 .50 .55 each. 



12-^x11 13x2 15x2 18x2 20x2 25x3 in. 
.60 .65 .70 .75 .80 $2.00 each. 

2544. Ditto, ditto, lipped. 



5xf 6xl 7|xlf 8xl 10x2 Il-Jx2| in. 

.30 .35 .37 .40 .45 .50 each. 

13x2 15x 15x2 20|xl 25x3 in. 

.52 - .50 .55 .75 $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. 

-J pt. 1 qt. -J gall. 1 gall. 2 galls. 
$1.25 1.50 2.50 3.25 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 2| inches diameter, with small opening at the 

top. Each, $1.75 

2550. Ditto, specie, ground tops, if desired. 

pt. 1 pt. Iqt. | 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 oz., $1.50 2 oz., 2.00 per doz. 

2553. Ditto, ditto, porcelain, glazed, flat covers. 

8 oz. 16 oz. 1 qt. 

.60 .75 $1.25 each. 2554 

2554. Ditto, ditto, fine French choice porcelain, with fire-gilt 

bands. 1 oz., $3.50 4 oz., 4.00 per doz. 

2555. Ditto, ditto, white porcelain, conical cover, knobbed. 

8 16 32 oz. 

.75 $1.00 1.25 each. 

2556. Ditto, ditto, French, labelled, 17 c. o, high. Each, $1.30 



OF CHEMICAL AND PHYSICAL APPARATUS. 



119 






2557 



2561 



2564 



2565, 66 



9x5f in. 
3.50 each. 



2557. JarSj ditto, round, with conical top, knobbed, tall shape, 
of the yery best translucent and highly glazed china porcelain, 
with fire-gilt decorations, and labelled. 

4|x2f 4|x3i 7ix4| Six4| 6x3^ G|x4f in. 
$1.50 1.75 2.25 2.50 2,75 2.85 

6fx4i 7x4i 7ix4| 8x4^ 
$3.00 3.00 3.15 3.25 

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 Mud 
through which ointments will not penetrate. 

2558. Ditto, ditto, ditto, octagonal shape, 4x8. Each, $2.50 

2559. Ditto, ditto, octagonal and oblong, 4x6x7f. " 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 oz. pts. qts. i gall. 1 2 

.70 .75 $1.25 1.75 3.00 6.00 each. 

2561. Ditto, ditto, of Bohemian glass, having the mouth parallel 
with the sides. 

2x4 2|x5 3|x6 4x7 6x13 10x8 in. 
.50 .75 $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. 

4 8-16 32 oz. 

.30 .50 .75 $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. " .06 



120 E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 

2566. Jets, for Faraday s washing bottles, drawn. Each, .10 

2567. Ditto, for Berzelius s washing bottles. " .25 

2568. Ditto, for Bunsen s burners, flattened ends. " .25 




2ott8 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. 1.50 

2571. Julep Tubes, straight or bent. Per doz., 2.50 

2572. Kettles, porcelain, small. Each, 3.50 

2573. Ditto, ditto, large. " 8.50 

2574. Knife, for cutting cork, wooden handle. .40 

2575. Ditto, for blow-pipe use, with file on back. .75 

2576. Ditto, for cutting around glass tubing. .50 

2577. Ditto, sharpeners, of porcelain. 

5 in. .40 6! 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, MaVson 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 caudle at a distance of three ieet 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 caudle 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 i;i the milk, will be furnished 
wilh the instrument. 



OF CHEMICAL AND PHYSICAL APPARATUS. 




2582 2583 





2586 



2590 



2582. Ladles, iron, for pouring metals. 

3-inch bowl, .40 
2583. Ditto, tinned, long handles. 

5 5i 

.60 .70 



2593 



5-inch, .50 each. 



6 in. 
.80 each. 



Each, .50 
" $1.25 



2584. Ditto, porcelain, long handles. 

2585. Lamps, for perfuming rooms, without flame. 

Ditto. See Davy s Safety. 

2586. Ditto, alcohol blast, Russian. 1.50 

258 7 . 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 perforated sheet iron shelf, on top. 

Each, $3.00 



122 E. B. BEtf JAMIE S DESCBIPTIVE CATALOGUE 




599 





2603 



2605 



2607 



^ 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. Each, $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, etc. Each $6.00 

2594. Ditto, ditto, ditto, Avith porcelain foot. " 7.00 

2595. Ditto, ditto, Miiller 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 oz., without caps. Each, 20 

2598. Ditto, ditto, with round caps. 

4 oz., .50 6 oz., 60 each. 

2599. Ditto, ditto, with large cap and square base. 

3 5 8 oz. 

.50 .75 $1.00 each. 

2600. Ditto, ditto, vase form, 3 oz. Each, .50 

2601. Ditto, brass, for blow-pipe, with screw cap, for putting over 

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 

Lumps, gas. See Burners. 
Lamp Stands. See Supports. 

2605. LampSj Labratory, large wooden foot, with clamp, reflec 
tors, etc. 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 




2(508 



2610 




2612 



. Ditto, oxhydric, of brass, mounted, on stand. 

Each, $7.50 

2609.- -Ditto, ditto, ditto, larger. " 16.00 

2610. Ditto, ditto, larger, with extra arrangement for lime holder, 
moveable joints, etc. Each, $20.00 

2611. Ditto, ditto, ditto, very accurately adjusted, silver plated. 

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. BEKJAMItf s DESCRIPTIVE CATALOGUE 




1 



X620 





2622 2623 




2613 2621 2628 

2614. Lamp Wicks, for Berzelius s, Rose s, Mtlller s, etc. 

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. " .75 

2620. Leech Tubes. Per doz., 1.00 

2621. Lenses, magnifying, for assayers use, or reading fine 
print, etc. 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. Each, $3.50 

2626. Ditto, Lorn cases, single- 

9 lines, .75 11 lines, $1.00 each. 

2627. Ditto, ditto, double glasses. 

9 lines, $1.25 12 lines, 1.50 each. 



OF CHEMICAL AND PHYSICAL APPARATUS. 







2632 



2633 



2635 



2636 



$30.00 
2.50 
2.50 



2628. Lenses, horn gases, triple glasses. 

9 lines, $1.50 11 lines, 1.75 each. 

2629. Ditto, Photographic, Steinheil, of Munich, a very correct 

and clear glass. 
2630. Ditto, watchmakers. 
2631. Ditto, a set of convex and concave, in a box. 

Liebig s Potash Bulbs. See Potash Bulbs. 
2632. Light, Refraction of, apparatus for. 5.00 

2633. Light decomposition, 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 cc. 100 150 250 300 -J litre 1 2 
.35 .45 .50 .75 .85 $1.00 1.10 1.50 each. 

2636. Litre Flasks. 



30 cc. 
.25 



50 
.30 



100 
.40 



200 
.60 



litre 
.65 



.85 $1.00 each. 



2637. Ditto, ditto, two marks 011 the neck. 



50 to 55 
.60 



100 to 110 



200 to 220 cc. 
$1.25 each. 



2638. Limb, Safety, Liebig s. 

2639. Magic Lanterns, French, square tin. 



.Each, .50 



Small 

$6.00 



medium 
10.00 



large 
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 
Magic Circles. See Electricity. 



126 



E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 




2640 



2641. Magneto-Electric Apparatus, new invention, for firing 
the fuses, etc., in mine blasting. $100.00 

In this apparatus the armature A A is always in contact with the poles 
of the magnet N, 0, S 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 A", 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 JT, 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. Magnets, steel, straight. Each, 1.00 

2647. Ditto, Horseshoe, best English quality. 

2f 3 3| 4 5 6 10 in. 

.25 .30 .60 .75 .90 $1.25 2.50 each. 

2648. Ditto, Horseshoe, compound. Each, $4.00 

2649. Ditto, pair of bar, in box. " 3.50 

2650. -Magnetic Needle, on stand. 1.75 

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 .35 .40 .45 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. " .50 
2660. Ditto, porcelain, with handle and lip. 

2 4 8 16 oz. 

.35 .55 .75 $1.00 each. 

Mechanical Powers. See Apparatus, Mechanics. 
2661. Mercury Box, earthen, oblong, glazed, 2x5. .75 

2662. Ditto, Bottles, or Flasks of iron. Each, $1.50 

2663. Ditto, Jar, or Powder Cup, porcelain, 5 Ibs. 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 



E. B. BENJAMINS DESCRIPTIVE CATALOGUE 



2668. Mercurial Receiver, graduated, plain. $1.25 to 1.50 

2669. Mercury Shower > through porous wood. 3-00 

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. " $2.25 

2674. Ditto, ditto, fine ivory ruler, or paper cutter, for the desk, 

with a knob in the center. Each, $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 

2677. Ditto, ditto, No. 3. " 10.00 

2678. Ditto, ditto, No. 4. 15.00 

2(^79. 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. En. $25.00 

2680. Ditto, ditto, by Natchet, compound. " 20.00 




2668 2681 

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, etc. $225.00 

The high reputation of this celebrated manufacturer is too well known to 
need any further description 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. 



OF CHEMICAL AND PHYSICAL APPARATUS. 



129 




2692 2680 2693 

. Microscope, solar, complete, with all the appurtenances, 
in line polished box, comprising colored glasses, mounted, 
several objectives, manufactured expressly for me by the manu 
facturer for the University of Vienna. $200.00 
Ditto, pocket. See Loups or Lenses. 
Ditto, aplanatic, Steinheil. See Photographic Lenses. 
2683. Microscopic Covers, circles. Per doz., .35 
2684. Ditto, ditto, ditto. Per ounce, 14.00 
2685. Ditto, ditto, square. Per doz., .30 
2686. Ditto, ditto, ditto. Per ounce, 3.00 
2687. Ditto, Slides. Per doz., .70 
Minerals. See full list and description at the latter part 
of this book. 

2688. Mineralogists Slates, of unglazed porcelain, for show 
ing the streak. 2x2|, .40 4x5f, .50 each. 
Mineral ogical 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. .50 to $1.00 

Larger sizes made to order. 

2691. Ditto, ditto, horn. Each, .25 

2692. Ditto, Bottles, ground stoppered, carefully ground and 

graduated. 500 c. c., $2.50 1000 c. c., $3.50 

2693. Ditto, Jars, carefully ground and stoppered. 
500 c. c., $2.50 1000 c. c., $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. 7.50 

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 Buddie, 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 

2712. Ditto, ditto, without lifter. 225.00 

2713. Ditto, of round Buddie, for dressing stamped ore. 

45.00 to 52,50 

2714. Ditto, of Buddie stationary frame. 45.00 to 52.50 

2715. Ditto, of cylindrical blast Bellows, in wood. 87.50 

2716. Ditto, ditto, ditto, in metal. 225.00 to 315.00 

2717. Ditto, of Driving Ton, for flat shaft. 2.50 

27 i8._Ditto, of Delivery shaft. 2.50 

2719. Ditto, of separating Drum for well hole. 15.00 

0720. Ditto, of Drill, with drilling apparatus. 75.00 to 90.00 

2721. Ditto, of steam Engine, with horizontal cylinder and 
paddle-wheel movement, in wood. $45.00 to 60.00 

2722. Ditto, ditto, ditto, in metal. 225.00 to 300.00 

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 

2726. 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 

2729. Ditto, water-pressure Engine, com 
plete. $150.00 to 450.00 
2730. Ditto, Extraction apparatus 

$30.00 

2731. Ditto, of refining Forge, German. 

$15.00 

0732. Ditto. Hartz linen-coyered 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 zinc ore. 45.00 



132 E. B. BE^JAMitf s DESCRIPTIVE CATALOGUE 

2754. Model, curved Furnace, or oven. 12.00 

2755. Ditto, of Gold Avashing 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. 125.00 

2771. 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. Ditto, 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, Bail " Dog/ with truck, English. 15.00 

2779. Ditto, ditto, ditto, without truck, Hungarian 7.50 

2780. Ditto, plain Eeel. 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-ground workings. 225.00 

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 PHYSICAL 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. 2810 

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, or to attach 

to gas bladders. Each, .25 

2816. Ditto, ditto, of bone, for inhaling bags. Each, -25 to $1.00 





2818 






2821 




2817 



JJ8-22 



2823 



2827 



2817. Ditto, ditto, box-wood, for nursing bottles. 
2818. Mortars, agate, with pestles. 



.25 



li 

$1.90 


H 
2.00 


If 
2.15 


If 
2.20 


1* 

2.25 


2 

3.00 


2-^ in. 
3.25 each. 


$3.75 


4.00 


4.50 


2,-) 
f 

5.00 


5.50 


6.00 


3 in. 
7.00 " 


$8.50 


3* 

9.00 


4 
15.00 


41 

17.00 


5 
20.00 


5* 

^5.00 


5 in. 
30.00 " 


>. Ditto 


, ditto, 


mounted in wood. Extra; 


Each, $1 



Ditto, diamond. See Diamond Mortars. 



OF CHEMICAL AND PHYSICAL APPARATUS. 



135 



2820. Mortars^ glass, with lip and pestle, shape conical. 
Nos. 1176 1175 1174 1173 1172 

Size, 3J 3f 4i 4f 4| in. 

Price, .75 $1.00 1.25 . 1.50 1.75 each. 

2821. Ditto, hemispherical, glass, with pestle. 

2 3 5 6 in. 

.30 .35 .65 #1.00 each. 

2822. Ditto, iron, bell shape. 

4 oz. 8 16 32 | gall. 1 2 

.40 .70 $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 

i gallon. Each, $5.00 

2825. Ditto, ditto, ditto, ditto, 1 gallon. " 8.00 

2826. Ditto, ditto, ditto, ditto, 1 emulsion, sharp lipped, and 

ring around the top, cover and porcelain handles. Each, $6.50 




2829 






2830. 283^ 2834 2835 

2827. Ditto, ditto, deep mixing, glazed outside. 

Nos. 0123456 
Diam., 3 3 4J 5 6 7 8 
Price, .45 .60 .75 $1.00 1.25 1.50 2,00 3.00 

2828. Ditto, ditto, ditto, glazed throughout. 

Nos. 014 
.55 .70 $1.25 



2836 



7 8 
9} in. 

4.50 each. 



6 



2.50 each. 

2829. Ditto, ditto, shallow, for powders, glazed on the outside, 
with or without lip. 



Nos. 


00 





1 


2 


3 


4 


5 


6 


Size, 


*i 


2f 


3 


3 


i 


5 


5i 


6^ in. 


Price, 


.35 


.40 


.50 


.60 


.70 


.75 


.80 


$1.00 each. 


Nos. 


7 


8 


9 


10 


11 


14 


10 




Size, 


7 


75 
7f 


BJ 


9 


9* 


12* 


14i 


in. 


Price, 


$1.25 


1.40 


1.65 


1.85 


2.00 


5.50 


18.00 


each. 



136 



E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 



2830. Mortars, wedge wood. 



Nos. 
Price, 


0000 
.40 


000 
.50 


00 
.55 


. 



65 


1 

.70 




2 

90 


3 

$1.10 


4 
1.40 each. 


Nos. 


5 


6 


7 




8 


9 




10 


11 


12 




Price, 


$1.70 


2.00 


2.50 


3 


.50 


4.00 


4 


,50 


5.25 


6.00 


u 



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 
2S36. Ditto, ditto, for making scorifiers. 5.00 to 7.00 
2837. Ditto, charcoal of wood, for forming oblong charcoal pieces. 

Each, $1.25 




2838 



284:2 2845 



2847 



2848 



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. " 7.50 

2841. Muffles, sand, large. 1.50 

2842. Ditto, ditto, ditto, for Hibb s furnaces, fire clay. " 1.25 
2843. Ditto, ditto, for Kent s furnaces, round ends. " .35 

2S4-4. Ditto, French, thin and strong, No. 5, 2x3|. " .30 

2845. Ditto, ditto, ditto, No. 6, 2&x3f. " .35 

2846. Ditto, ditto, ditto, No. 7, 3x4^. .45 



OF CHEMICAL AND PHYSICAL APPARATUS. 



137 



2847. Muffles, French clay, best. 
ABC 

H 4i 5" 
4f 6 6i 

Price. .50 .60 -70 
2848. Mullers, Glass. 
Slabs for above. 
Ditto, Agate. 



D 



4| 



.75 



E 

44 
5i 

7f 
$1.00 



6 

8 

1.10 
3 in., $1.25 



G 

4J 



1.20 



H I 
4} 3i 

10 11 
1.50 2,00 each. 
4 in., 2.25. 



See Plates. 

See Agate Slabs, with Muller. 




2849 



2353 



2855 



2849. Nicholson s Hydrometers, for 

Gravity of solids, minerals, etc., made of brass. 
2850. Ditto, ditto, ditto, including jar. 
2851. Ditto, ditto, ditto, of tin. 

2852. Nitrogen Bulb, Will Sr Varrentrapp s, 3 bulbs. 
2853. Ditto, ditto, ditto, 4 

2854. Ditto, Limbs, Liebig s, for connection. 
2855. Nitrous Oxide Gas, apparatus for forming. 
2856. Ditto, ditto, ditto, smaller. 

Nipper Taps. See Pinch Cocks. 
2857. Nipple Shells, French, with ring. 
2858. Nursing Bottles, 

ditto. Per doz., $1.25 
2859. Ditto, ditto, corks. 
Per doz., $.50 
2860. Ditto, ditto, tops 

box- >food. Per doz., $1.00 2858 



3856 

Specific 
Each, $4.00 
6.00 
2.00 

.65 

.75 
.75 
3.50 
2.50 



Per doz.. 4.50 




138 



E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 




2861 





2862 




2865 



2878 



2861. 



2862.- 

2863.- 

for 

2864.- 
2865.- 
2866.- 

2867.- 
2868.- 
2869.- 
2870.- 
2871.- 



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. 
-Ozonometer, Sieman s. 

-Ditto, to attach to the new Borchard electrical machine, 
collecting ozon $6.00 

Page s Rotating Apparatus. 16.00 

Ditto, Revolving Electro-Magnet. 8.00 

-Paper, bibulous. Per bundle of 1000 sheets, 4.50 

Ditto, filtering. See Filtering Paper. 

-Ditto, glazed. Per sheet, .05 ; per quire, .75 

-Ditto, litmus. Per sheet, .05 

-Ditto, neutral. " .05 

Ditto, parchment. " .25 

Ditto, tea, No. 1. Per quire, .10 



OF CHEMICAL AND PHYSICAL APPARATUS. 



139 



2872. Paper, tumeric. 
2873. Ditto, weights 
2874. Pallettes, small. 
2875. Ditto, large. 
2876. Pans, expectorating. 
2877. Ditto, for gold washing. 

Ditto, horn. See Horn Pans. 
2878. Parabolic Reflectors. 

13 in., $16.00 . 15 in., 25.00 

2879. Ditto, ditto, nickleized or silvered, additional. 



Per sheet, .05 
.50 

Each, .25 
" .30 
" .25 
" .50 



10 in., 13.00 

$2.50 





2882 




2880 



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. " .50 
2885. Ditto, ditto, green, cut crystal glass. " 3.00 
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. 5.00 
2890. Ditto, candles. Per lb., .75 
Ditto, Meter. See Gas Meter. 



140 



E. B. BEXJAMI^S DESCRIPTIVE CATALOGUE 




2888 

2891. Photographic Baths, porcelain, small. Each, $4. 

2892. Ditto, ditto, ditto, large. -" 5.00 

2893. Ditto., Dishes,, porcelain, shallow, with lip. Boyal Berlin, 
9 inches. Each. $2.75 

2894. Pill Boxes,, for rounding and silvering pills. " .75 

2895. Ditto, tiles. 

567 in. 
.40 .50 .75 each. 

2896. Pincers, gas, with corrugated jaws, for handling gas and 
other pipes, with screw driver on handles. $1.00 to 1.50 




2900 



2901 



2di)7 2898 2899 

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. 1234 

.30 .40 .50 .60 each. 

2899. Ditto, ditto, with rubber attachment and glass tips. 



Small. .35 



large, .05 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. " .25 

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. .75 

2905. Ditto, organ; special prices. 





2906 29(>7 

2906. Pipettes, straight, 6 in. long, drawn to 

Each, . 

2907. Ditto, cylindrical, or ball. 
2908. Ditto, with rubber ball, plain. 
2909. Ditto, fixed, or volume. 

1 2 5 10 20 25 3 ) 50 
.15 .20 .25 .30 .35 .40 .45 .50 

2910. Ditto, Ettling s. 

2911. Ditto, filling. 

2912. Ditto, dropping, graduated, 100 in 10. 

2913. Ditto, Mohr s, graduated. 



29J^ -2913 
the end. 

10; per doz., $1.00 

Each, .25 

" .50 



75 
.65 


100 

.85 


150 
.90 


200 cc. 
$1.00 each. 

Each, .75 
" $1.00 



5 5 10 10 


10 15 


20 cc. 


iV /o 1 vo 


2 (I "1 0" 


1 L o 


.70 .75 .75 .9) 


$1.00 1.10 


1.15 each. 


25 25 30 50 


50 100 


100 cc. 


fr; &, i i 


1 


4 


$1.15 1.20 1.20 1.3") 


1.40 2.00 


2.50 each. 


2914. Ditto, ditto, graduated fi\ 


>in to 5, 


to 10. 


1 in us $1.00 


in T O-, 75 


in tV .85 each. 


1 in iV .75 







142 



E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 



2915. Pith Balls, per dozen. .25 

2916 Ditto, Birds, $1.25 

2917. Ditto, Images, per pair. .75 

2918. Plates, l>rajs sliding rod/ hook and check screw. Ea. 5.50 

2919. Ditto, earthen, glazed, 6 inch. " .25 



2920 



2925 



2926 



2924 2928 2933 2934 

"2920. Ditto, ditto, perforated, with rim around the top, flat. 

4* 






o in. 
.40 each. 



3 4 

.25 .30 .35 

Ditto, glass. See Covers and Glass Plates. 

2921. Ditto, porcelain, deep, rectangular. Each, 1.25 

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. 

4 4| 5i 5iin. 

.40 .45 .50 .55 each. 

2925. Platinum Dishes. 

| f 1 2 3 4 oz. Per grain, .3 

2926. Ditto, Boats, for combustion. 

2f 2| 3^ in. " .3 

2927. Ditto, Spatulas. 



3H 



2928. Ditto, Spoons, with or without covers ; 2 sizes, " .3 

2929. Ditto, Scrap. -H 

2930. Ditto, Sponges, German. Each, .30 

2931. Ditto, ditto, French. " 75 

Ditto, spongy. See Chemicals. 

2932. Ditto, Jets or Tips. Each, .75 to $1.00 

2933. Ditto, End Tongs, steel, double bend. Each, 6.00 

2934. Ditto, ditto, German silver, double or single bend. " 6.50 



OF CHEMICAL AtfD PHYSICAL APPARATUS. 



143 



Platinum Retorts, special prices. 
2935. Ditto, Sheet and Foil, ordinary size and thickness. 

Per grain, .2-J 

2936. Ditto, wire, ditto, ditto, fine as hair. Per foot, .25 

9937. Ditto, Foil, very thin for batteries. Per grain, 3| 

^ 2938. Ditto, Wire, for blow-pipe. Per foot .30 to .60 

Ditto, ditto, and Foil Gauze. 




2939. 2940 





2941 



2945 



2939. Ditto, Covers. 1J, If, U, If. If, 1J, 2 in. Per grain, .3 

2940. Ditto, Crucibles, i, 4> f. 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, SI 50.00 

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, 1200.00 

2945. Ditto, ditto, ditto, Carre s, with separate arrangements, for 
exhausting air and freezing water on same apparatus. 

Each, $150.00 



144 



E. B. BENJAMINS DESCRIPTIVE CATALOGUE 




2946 

2946. Pneumatic Pump^ on flat base; barrel Sx2 inches; 

plate 10 inches diameter, with manometer. Each $100.00 

2947. Ditto, ditto, with cylinder, 7<rx2| inches, and plate 8 inches 

diameter, barrel placed vertically. Each, $50.00 

2948. Ditto, ditto, barrel 7x1^ inches, plate 7-J- inches diameter. 

Each. $-25.00 






2951 2952 2956 

2949. Ditto, ditto, barrel, 7x1 inches ; plate, 6 inches diameter. 

Each, $18.00 

2950. Ditto, ditto, without any stopcock. " 15.00 

2951. Ditto, ditto, not mounted, for organic analysis. " 10.00 



2952. Ditto, ditto, 



15.00 



OF CHEMICAL AND PHYSICAL APPARATUS. 



145 



2953. Pneumatic Trough, of tin, japanned, 9xl2|, with shelf 

$2.75 

2054. Ditto, ditto, ditto. 
11x15 in., with shelf. 
$3.50 

2955. Ditto, ditto, ditto, 
13x16 x!2 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 
Polariscope. See 
Tnrmaline Pincers. 2959 

2959. Polarization Apparatus, Mitscherlich s, caremlly con 
structed, on a metallic stand, double tubes. $60.00 





2161 



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. &17i.OO 

2961. Ditto, ditto, Soleil s, of finely polished brass, with three 



146 



E. B. BEXJAMIN S DESCRIPTIVE CATALOGUE 




296-2 

tubes, complete, in a fine polished mahogany box, lock, key, 
etc., 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 instructions 
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 2Do. 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 oz., $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. 
2966. Ditto, ditto, Liebig s latest form. 
2967. Ditto, ditto, Molir s. 
2968. Ditto, ditto, Geissler s. 



Each, .60 
" .75 
.90 

" $1.00 





2970 




2969 



2971 



2973 



2976 



Each, .30 



2969. Ditto, Pipettes. 
2970. Precipitating Glasses. 

4 8 16 32 oz. | 1 gall. 

.25 .30 .40 .60 .80 $1.10 each. 

2971. Preparation Glasses, flat bottom, thin glass. 

6xli 7xlf 7xl| 8xl| 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. " 15.00 

2976. Ditto, ditto, series of 3, mounted. 30.00 

2977. Ditto, flint glass, 3 in. " .75 

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. " 2.00 

2982. Ditto, " 21 " " 2,50 



148 



E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 



rl 



2983. Prisms, acromatic, 30x27 m. m. 
2984. Ditto, ditto, 35x32 
2985. Ditto, ditto, 40x38 " 
2986. Ditto, ditto, 45x43 " 

2987. Ditto, equilateral flint, 33x30 m. m. 
2988. Ditto, ditto, 35x33 " 

2989. Ditto, Nicol s assortment. 



Per pair, 5.00 

6.00 
7.25 
9.00 

Each, 4.00 

" 5.00 

Each, $6.00 to 10.00 



299.) 



2992 



2993 




2994 



2990. Proof Glasses. $Eachy 1.25 

2991. Punch Sticks, with porcelain ends, for 
crushing crystals in deep vessels, etc. Each, .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. u 1.50 
2995. Ditto, Hydraulic, for blowing, by baromet 
ric pressure. Each. $30.00 
2996. Ditto, glass apparatus, for showing the principle of the 



2995 



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 

2998. Pungents, white, or large open mouthed, ground, stop 
pered bottles. 1 oz., $4.50 2 oz., 5.00 per doz. 



OF CHEMICAL AXD PHYSICAL APPARATUS. 149 





2999 3000 3001 3003 3010 

2999. Pungents, amber, large open mouthed. 

1 oz., $4.50 2 oz., 5.00 per doz. 

3090. 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, $535.00 No. 3, 45.00 each. 

.3002. Ditto, ditto, ditto, gold plated on silver. 

No. 1, 845.00 No. 2, 65.00 each. 

3003- Ditto, cut glass, with ground stopper, and hinged 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 Keceivers. 

3006. Radiator, Leslie s. $2.50 

3007. Rasps, round, for filing corks. 

4 5 6 7 8 in. 

.25 .30 .40 .45 .50 each. 

Reagents. See Chemicals ufc 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. " 10.00 

3012. Ditto, ditto, large. 12.00 

3013. Receivers, for retorts, plain, genuine Bohemian glass. 

2 2| 5 galls. 

$2.00 3.50 5.00 each. 



150 



T\ B. BENJAMIN 8 DESCRIPTIVE CATALOGUE 




v 



301*2 
3014. Receivers > for retorts, tubulated, unstoppered. 

8 16 32 oz. 

.45 .55 .70 each. 

3015. Ditto, Bohemian glass, quilled. 

8 oz. 16 32 | gall. 1 

.70 .80 $1.20 1.70 2.00 each. 

3016. Ditto, glass, tubulated and stoppered. 

2 oz. 4 8 16 32 ^ gall. 1 

.30 .40 .50 .60 .75 $1.00 1.50 each. 






3013 3014 301") ..... 

3017. Ditto, spherical, long-necked and ring top, tubulatures at 
the side, of Bohemian glass. 

i 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. i gall. 1 

$1.50 2.25 2.50 each. 



OF CHEMICAL AND PHYSICAL APPARATUS. 



151 



3020. Receivers, porcelain. 4 oz., 
3021. Ditto, earthen-ware, -J- gall. 

m 



f, 



8 oz., 1.50 each. 
Each, $1.25 




.20 
.30 
.50 
.25 
1.25 



3022 3023 3025 3029 

3022. Reduction Tubes, of glass, with 1 bulb. 
3023. Ditto, ditto, ditto, 2 " 

3024. Ditto, ditto, ditto, 3 " 

3025. Ditto, ditto, ditto, 1 " bent end. 

3926. Ditto, ditto, porcelain, for reduction by hydrogen. 

Reflectors. See Parabolic Reflectors. 
3027. Retorts, plain glass, single tube, best Bohemian glass, 

1 oz. 2 4 8 16 32 i gall. 247 

.20 .25 .30 .40 .45 .60 .90 $2.25 3.50 6.00 each. 

3028. Ditto, ditto, ditto, with double tube, Liebig s. 
8 oz., .80 16 oz., $1.00 each. 

3029. Retort Glass, plain Bohemian, two bulbs in the neck, 
for preparing oxygen gas from red oxide of mercury. 

2 4 6 oz. 

.30 .35 .55 each. 

3030. Retorts, glass, light, French tubulature, without stopper. 

1 oz., .12 2 oz., .15 each. 

3031. Ditto, ditto, Clark s, plain, with tube receiver. Each, .50 
3032. Ditto, ditto, Faraday s. " .50 





3033 3034 

3033. Ditto, ditto, best Bohemian, tubulatured and stoppered. 
2 oz. 4 8 16 32 | gall. 13457 



.35 .40 



$1.20 1.50 3.50 4.50 7.00 9.00 each. 



152 



E. B. BENJAMINS 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, German, for micro-chemical operations, plain, 



assorted sizes. 
3037. Ditto, tubulated & ppered. 

Retort Funnels. See Funnels. 
,/ 3038, Retorts, stoneware. 

4 8 16 

$1.00 1.25 1.50 

3039. Ditto, iron, loose cover. 

4r 1 2 3 4 8 

$2.75 3.00 3.75 4.25 5.00 6.50 



Per doz., $2.50 
3.50 



32 oz. 
2.00 each. 



16 pts. 
10.00 each. 




3045 



3040 



o 



3053 




3059 



3040. Ditto, copper, loose heads, ground and fastened with clamp, 

for making oxygen. 1 qt., $4.50 2 qts., 6.00 each. 

3041. 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 

3O47. Roasting Charcoal, pieces. Per doz., .75 



OF CHEMICAL AND PHYSICAL APPARATUS. 



153 



3048. Boasting 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 lb., $1.00 

Ditto, ditto, stirring. See S r . >rs. 

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. 5^ 5 4 3 2| 2 1 

$1.50 1.50 2.25 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. 

Nos. 1 2 3 4 5 6 7 8 9 10 11 12 

.08 .09 .10 .15 .20 .25 .30 .35 .50 .60 .65 .75 each. 

Or $9.00 per lb. 




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. LOO 

3061. Rupert Drops. Per doz., .50 



154 E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 




3082 3075 3069 3084 

3062. Russian Spirit Lamps. Each, *2.0o 

Saccharine tors. See Polarization. 

Saccharometers. See Hydrometry. 

Safety Funnels. See Funnel Tubes. 

Ditto, Lamps. See Davy s. 

3063. Salometers. " 1.25 

3064. Sand Baths,, cast iron, with handles 8-J- to 9 in. " 2.2o 
3065. Ditto, ditto, spun, best, French, deep, very stout. 

4 5 6 7 in. 

.40 .50 .60 .75 each. 

3Q66. Ditto, ditto, shallow. 

2 3 4 5 G in. 

.20 .25 .30 .35 .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, 10 minutes. Each, .50 
3070. Ditto, ditto, of brass, small, 5 minutes. " .75 

3071. Saw, small, with cocoa handle. .75 

3072. Scales, apothecaries, with brass beams and horn pans, 
without pedestal. 

4 4^ 5 6 7 8 in. beam. 

$1.40 1.50 1.85 2.10 3.00 4.00 each. 

3073. Ditto, ditto, with brass pans. 

4 5 G 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 



OF CHEMICAL AND PHYSICAL APPARATUS. 



155 



Each, .25 
Each, .50 to $1.00 
" 2.50 

.12 

Per 100, 3.50 
" 20.00 



3077. Scales, prescription, in morocco cases. Each, $1.25 

3078. Scale Pans, of horn, adjusted with silk cord. 

Nos. 123456789 
Diam., If 2 2-J 3 3 4 4i 4^ o^in. 
Price, .40 .50 .65 .75 .90 $1.25 1.45 1.75 2,00 each. 

See also Balances, page 17. 

3079. Schuster s Dropping Flasks, stoppered. 
3080. Scissors. 

3081. Ditto, tinsmiths , for cutting metals. 
3082. Scoops,, of horn. 
3083* Scorifiers, Freiburg usual form. 

3084. Ditto, ditto, urn shape. 

3085. Ditto, holders, of iron, with 9 partitions, for holding scori- 
fiers, when various assays are under examination together. 

Each, $1.50 

3086. Scorifying Moulds., of cast 
iron, 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 

hard bristles. 
3088. Ditto, Brush Wire,, 







Each, .50 
Per lb., $5.00 

3089. Screen, 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. Screws, brass head. .10 

3091. Seidlitz Powder Cups, with partitions. .60 

Sets of chemical aurjaratus 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. " .75 to 1.50 

3096. Ditto, ditto, ditto, 12 " 1.00 to 2.00 

3097. Ditto, horse hair. 1.25 



150 



E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 



3098. rSieves, silk bolting cloth, small, French, 

3 4 5 6 in. 

.50 .75 $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. " .75 

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 unglazed 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 




3108 3109 3110 11 12 13 14 16 

3108. Sodium Spoon, for holding sodium in water undei 
cylinder. .50 

3109. Ditto, Flame, apparatus for inverting. $3.50 

Souftiets, cylindric, or glass-blowing table. See Glass 
blowers table. 
31 10. Spatulas, bone, with pointed handle. 

4- in., .20 5 in., .25 each. 

3111. Ditto, with spoon. 

4 5 G in. 

.20 .25 .30 each. 

3112. Ditto, bone, with double end. Each, .25 

3113. Ditto, and spoon, ivory, assorted, small. " .15 



OF CHEMICAL AND PHYSICAL APPARATUS. 157 

3114. Spatulas, of glass, 6 inches. Each, .15 

3115. Ditto, of brass, double end, 4 inches. " .75 

3116. Ditto, and spoon, of brass, adapted for weighing small 
quantities. $1.25 

t117. Ditto, of horn. 

2| 4 5 6 7 7| Sin. 

.10 .15 .20 .25 .30 .35 .40 each. 

3118. Ditto, ditto, with spoon. 

3 3^ 4 4| 5 5| 6 7 8 in. 
.15 .18 .20 .23 .25 .28 .35 .40 .50 each. 

3119. Ditto, platinum. Per grain, .a 




3120 3121 3122 3123 3126 3128 

3120. Ditto, porcelain, with handle. 

4| 5J 6-J- 7| SJin. 

.40 .45 .50 .65 70 each. 

3121. Ditto, ditto, square end. 

11| 14i 17| in. 

.75 .90 $1.25 each. 

3122. Ditto, ditto, double. 

11| 14f 17 in. 

.50 .60 .90 each. 

3123. Ditto, ditto, with spoon. 

11 14J 17 in. 

.55 .70 $1.00 each. 

3124. Ditto, steel, double ends. Each, .25 to .75 

3125. Ditto, ditto, cocoa handle, length of blade 

3 4 5 6 7 8 9 10 in. 

.25 .30 .35 .40 .50 .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 25 . 50 100 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. 

.75 $1.00 1.50 2.00 each. 

29. Ditto, ditto, ditto, ditto, in fine chamois-lined leather cases, 
with counterpoise. 



100 

$2.50 

3130. Ditto, 

10 
$2.50 



250 
3.00 

ditto, 



1000 grs. 



5.00 each. 



ditto. 



50 gram s. 
4.00 each. 



500 
4.00 

ditto, 

25 

3.50 

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. 

3132. Ditto, , ditto. ditto, ditto. 

100 500 1000 grs. 

$3.50 4.00 4.50 each. 

3133. Ditto, ditto, ditto, with thermometer. 50 grin 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, "Heidelberg 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 



Oli 1 CHEMICAL AJSD 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. " 4.75 

3143A. Ditto, ditto, for alcohol. 2.50 

Ditto, Support. See Supports. 

3144. Spectrum, Browning s lantern arranged for showing 

on screen, small size. $50.00 

3145. 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. 

2i 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, .50 

3153. Ditto, dipping, ladle form, of glass. " 1.00 
3154. Ditto, horn, first quality. 

3 6 7 8 9 in. 

.18 .25 .30 .35 .50 each. 

3)55. Ditto, horn, ordinary. 

5 5^ 7 7i Sin. 

.15 .18 .20 .25 .30 each. 

And wide bowl, 7-J- in., .40. 

3156. Ditto, iron. Each, .40 

3157. Ditto, porcelain. 

of 7 9 9i 13| in. 

,30 .50 .60 .75 $1.50 each. 

3158.- -Ditto, tea, porcelain. Per doz., $3.00 

3150. Ditto, ditto, ditto, perforated, for dipping crystals or 

leeches, oval. Each, .50 

3160, -Ditto, ditto, ditto, ditto, round. .60 3160 

3161. -Sticks, of prepared coal, for breaking glass. Per doz., .60 
3162 -Ditto, ditto, ditto, ditto, larger. " .70 



160 



E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 




3163 





3177 3178 3180 




3181 



3186 



3176 



3198 



3 galls. 
20.00 each. 



12 in. 
.60 per doz. 



>3. Stills, of copper, with worm, tinned. 

1 2 

$12.00 15.00 

3164. Stirrers, of glass, ends polished. 

6 9 

.30 .45 

3165. Stool, insulating. 
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. 
3168. Ditto, with double ends, for tubing. 
3169. Ditto, one end for tubing, 1 male screw. 
3170. Ditto, double male screw. 
3171 .Ditto, ditto, female " 
3172. Ditto, male and female screw. 
3173. Ditto, brass, one end for tubing and one for inhaling. Ea. 1.00 
3174. Ditto, earthenware, English. 

4^ in. long, $3.00 9-J- in. long, 4.50 each. 

3175. Ditto, ditto, French. 

7i 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. 1.50 

3179. Ditto, for gas generators. " 1.25 

31$0. Ditto, Deleuil, of silver, for assay, by the wet way. " 30.00 



$5.00 



1 o^ 

J-./Vt> 

1.25 
1.25 
1.25 
1.25 
1.25 



OF CHEMICAL AKD PHYSICAL APPARATUS. 161 

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. Each, $1.25 

3183. Ditto, of glass, one end enlarged to receive a cork. " 1.25 

Stoppers, caoutchouc. See Rubber. 

3184. Storm Glasses, plain. 1.00 

3185. Ditto, with thermometer. " 2.50 

3186. Stoves, gas, small vulcan. " .75 

3186A.-Ditto, ditto, larger. 

Nos. 123 

$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. 3.00 

3191. Ditto, ditto, deep. " 3.50 

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. 

7 9 10| 12 ins. 

.75 $1.00 1.25 1.50 each. 

3195. Ditto, porcelain, round bottom, large size, glazed inside and 
out. 

13 in., $3.50 15| in., $4.50 each. 

3196. Ditto, porcelain, with handle on each side, holes small, 6 in. 

diameter. 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 cc. 

.35 .40 .50 

3199. Straw Rings, French plaited, for supporting round bot 
tom vessels, dishes, flasks, retorts, 

*3 3* 4i 5| 7 9 in. 

.18 .20 23; .27 .35 .40 each. 

Suction Tubes, for filling bulbs, etc., see Filling Tubes. 
Supports, for potash bulbs, with hooks. Each, $1.50 



162 



E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 




3202 3204 

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 





3206 3207 3208 

3204. Ditto, of brass, for two burettes, spring clamp, with cork 
lining, and fine oiled black walnut foot. 



OF CHEMICAL AND PHYSICAL APPARATUS. 



163 



3205. Supports, of iron, for two burettes, cork lined clamps 

Each, $3.50 
3206. Ditto, ditto, of soft wood, with cork lined jaws, for 

1 $1.25 2 burettes, $1.50 

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. 





3213 




3212 



3216 




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. 

3211. Support, Hoffman s, new, 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. $7.50 
3213. Ditto, earthen, for crucibles, or "frontages" .20 
3214. Ditto, porcelain, for small dishes. .25 
3215. Ditto, Table, including fork and drying tripod. 

6 9 12 13iin. 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. " 1.25 

3218. Ditto, ditto, for six funnels and double arm. " 1,25 
3219. Ditto, or Filtering Stands, to cover beaker, according to 

Fresenius. Each, $1.25 

3220. Ditto, with large wooden ring. " 1.50 

3221. Ditto, with two wooden rings. " 1.50 




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. " 2.75 

3224. 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. " .75 



OF CHEMICAL AND PHYSICAL APPARATUS. 



165 



#227. Supports, Test tubes, polished mahogany, with pins, for 
draining. Each. $1.50 

3228. Ditto, ditto, for 18 tubes. " LOG 

3229. Ditto, ditto, mahogany, with drawer and draining pins. 

Each, $2.00 

3230. Ditto, ditto, universal, circular. 
3231. Ditto, ditto, japanned tin, for six test tubes, 
3232. Ditto, for retorts, wire, two rings. 



ditto, 
ditto, 



iron, 

" throe rings. 

ditto, brass, " with porcelain foot. * 



2.00 

Each, .60 
" .90 

" $1.00 

" 1.25 
4.50 
1.25 

Shellbach, round iron base, two 
joints and sliding clamp. Each, $2.00 

3238. Ditto, ditto, iron base, t#o joints and sliding clamps, 
polished. Each, $2.50 

.3239. Ditto, ditto, French, upright, " 1.50 



3:233. Ditto, 

3234. Ditto, 

3235. Ditto, 

3236. Ditto, ditto, of wood, Gay Lussac form. 

3237. Ditto, ditto, 




3240 



3247 



3250 



2.00 

3.50 

4.00 

.50 



3240. Ditto, ditto, universal. 

3241. Ditto, ditto, " fine quality, heavy. " 

3242. Ditto, ditto, " highly polished, pear wood. " 
3243. Ditto, feet of porcelain, round. " 

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, wood, with fork, small. .75 



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. 

3248. Ditto, pipette, glass, new style, various. Each, .75 

3249. Syringes, glass. Each, .50 to $1.50 




3254 



3262 



Each, $4.00 
5.00 
6.00 



3250. Ditto, metallic, male, in mahogany cases. 
3251. Ditto, male and female, " 

8252. Ditto, Fire, of glass. 

Ditto, brass. See Air Pumps. 

3253. Tank, for holding solutions when under examination by 
the Lantern; consists of two glass plates, separated by rub 
ber partition which forms the wall of the tank, on three 
sides. $3.50 

3254. Tantalus Cup. 2.00 

3255. Tapers, wax, in small boxes. Per box, .25 

3256. Ditto, ditto, to burn in oxygen, etc. 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 

3258. 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 AKD PHYSICAL APPARATUS. 



167 



3260. Test Dishes, porcelain, for colored precipitates. Each, .25 
8261. Ditto, Glasses, conical, on foot, without lip. " .40 

3262. Ditto, ditto, French, ditto, ditto, with lip. 

| 1 2 4 8 16 oz. 

.15 .18 .25 .30 .40 .50 each. 

3263.- Ditto, ditto, micro- chemical, of thin glasss, very small, made 
by blow-pipe. Per doz., $1.75 



ft 





w 

3264 3266 3269 3271 3272 3273 3274 

3264. Test Lead Measure, Plattner s. Each, .50 

3265. Ditto, ditto, Sieve, brass, Plattner s. " .50 

Test Metals. See Minerals, at the back part of this book. 
3266. Test, Marsh s, arsenic. 75 

3267. Test Papers, assorted. Per sheet, .5 

3268. Test Tubes, infusible Bohemian glass, 6 x f in. 

Per doz., $1.25 

3269. Ditto, French and German, with the ends even thickness 
throughout ; free from lead. 
3 4 5 679 10 in. long. 



ft to f | to to $ -I to f 1 1$ 1| in. wide about. 

.30 .40 .50 .60 .75 $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 .50 .70 each. 

3271. Ditto, with pasteboard cases, in nests of 

6 9 

.40 .60 each. 

3272. Ditto, on foot. 

H 2 4 6 8 in. 

.40 .45 .GO $1.00 1.25 per doz. 



Each 



168 E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 

3273. Test Tubes, stoppered, 5 in. Per doz., 

Test Tube Brushes. See Brushes. 

Ditto, Holders, wood, new form. 

Ditto, ditto, brass, with sliding band. 

Ditto, ditto, " wood liandle. 

Ditto, ditto, wire, with wood liandle. 

Ditto, ditto, and supports. See Supports. 
3278. Testing Slab, plain, of porcelain. 



3275. 

3276 
3277 



, .20 
.50 
.60 
.50 

.50 





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, 8 in. long, up to 212 deg. Fall., paper scale 



Each, .85 
" .90 
$1.00 
" 1.20 



in glass tube, and pasteboard cases. 
3285. Ditto, ditto, ditto, ditto. 10 in. long. 
3286. Ditto, ditto, ditto, ditto, 12 
3287. Ditto, ditto, ditto, ditto, 15 
3288. Ditto, ditto, ditto, ditto, up to 2CO deg. 

12 in. long, $1.25 15 in. long, 1.25 each. 

The largest thermometers are smallest iu diameter. 
3289. Ditto, ditto, Celsius paper scale, 50 to 100 deg. Each, 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, Fall., enclosed in 

glass tube, graduated up to 212 deg. Each, $1.50 

3292. Ditto, ditto, ditto, ditto, running from 280 to 330 deg. 

Each, $1.75 
3293. Ditto, ditto, ditto, ditto, running from 400 to G40 deg. 

Each, 82.00 
3294. Ditto, ditto, ditto, ditto, running up to 660 and 800 deg. 

Each, $2.25 

3295. Ditto, ditto, ditto, Fah. and Eeamur, 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. "" 2.50 

3298. Ditto, ditto, ditto, up to 360 " " 3.00 

3299. Ditto, ditto, ditto, Fall., up to 260 deg. " 2.25 

3300. Ditto, ditto, ditto, ditto, " 400 " " 2,50 

3301. Ditto, ditto, ditto, ditto, " 600 " " 3.00 

3302. Ditto, ditto, ditto, ditto, above. " 3.50 

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, joined with tightly 

fitting ground glass stop-cock. Each, $4.00 

33Qg. Ditto, Day and Night, glass. " 4.00 

3307. Ditto, House, in mahogany, Fahrenheit and Centigrade, 

French spirit. Each, .40 

3308. Ditto, ditto, ditto, japanned tin, Fahrenheit. 

6 9 12 in. 

.50 .75 $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. Each, $10.00 

3312. Ditto, Sugar-house, French, accurately graduated, Fahren 
heit and Centigrade. Each, $10.00 

3313. Ditto, Window, Milk glass, silvered, etc., Fahrenheit, 

Celsius, and Eeamur. Each, $1.00 to $5.00 

3314. Thermometer Tubes. Each, .25 

3315. Thieves, for drawing or decanting spirits, glass. " .7fi 



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 






3319 3320 3322 3323 

3319. Tongs, coal. 

13 14 17i 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 
3322. Ditto, ditto, single bend steel, 9 in. " 1.00 
3323. Ditto, ditto, double bend. " 1.25 
3324. Ditto, ditto, ditto, German silver. " 1.50 
3325. Ditto, ditto, ditto, nickleized. 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. Each, $6.50 

3328. Ditto, ditto, steel, with large double bend. 1.50 

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. " 1-50 

$336. Ditto, ditto, French, bent on the end, with strap " 2.75 




3329 



3330 



3331 



3332 3333 3334 3335 



3336 



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, etc. 

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. " 5.00 

3343. Ditto, set of 2, with connecting pipe. " 1.00 

3344. Trays, lead. Each, .50 

3345. Ditto, shallow porcelain, for holding jars containing cor 
rosive liquids. Each, .20 to .40 



E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 




3337 



3350 




A /HI 



3339 



3352 



3353 



3356 




3343 



3360 

Each, $1.50 
" 1.50 
.30 
.25 
.50 
Per doz., .60 



33-16. Trays, walnut, with partitions, for batteries. 
3317. Trellis Top,, for furnace, of gauze wire. 
3348. Triangles, of glass. 
3349. Ditto, Plattners Blow-pipe. 
3350. Ditto, ditto, porcelain. 
3351. Ditto, ditto, wire. 

Trimming Hammers. See Hammers. 

3352. Tripods, of galvanized iron, for gas burner. " $7.00 
3353. Ditto, ditto, brass, for spirit lamp. " 9.00 

3354. Ditto, of wrought iron, with two concentric rings. Ea., 1.00 
3355. Ditto, ditto, ditto, with 7 concentric rings. " 2.00 

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 AOT PHYSICAL APPARATUS. 



173 



Tubes, delivery. Per doz., $1.50 

Ditto, drying. Each, .50 

Ditto, filling. " .50 

Ditto, julep. Per doz., .50 

Ditto, for Liebig s condenser, ordinary size. Each, $1.00 

Ditto, ditto, ditto, 6 ft. " 3.00 

3358. Ditto, for musical sounds. " .50 

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. " 1.00 





.40 
.50 

.75 



3363 3364 3365 3366 

3363. Ditto, 3 way, small, made of ordinary glass. Each, 
3364. Ditto, IT, 

6^ 9 10 in. 

25 .50 .60 each. 

3365. Ditto, ditto, 3 bulbs, small. 

3366. Ditto, ditto, ditto, large. 

3367. Ditto, ditto, ditto, wide, with large bulbs. " 

3368. Ditto, ditto, Bohemian, with draining tube in the middle, 

lon g- Each, .75 

3369. Ditto, ditto, with stop-cock. .75 

3370. Ditto, for vaccine. Per hundred, $5.00 

3371. Ditto, Specimen, perfectly round bottom, extra heavy 
glass, to bear corking. 

Hx 2x1 2xf 2x-j- 2f 2x4 in. 

30 .35 .40 .43 per doz. 

4 x 4 x - 4 x 4 x f in. 

.50 .55 .60 .65 per doz. 

5 x -j- 5 x f 6x1 in. 

75 .80 $1.00 per doz. 



o?; 



.25 
3xi 

.48 



174 



E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 




3367 



3371 . 3372 3373 



3378a 



3372. Tubes, VogeFs modification of WoulfFs 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 Ib. 75 

3375. Ditto, capillary, 3 ft. length. Each, .06 

3376. Ditto, colored. Per Ib. 



OOooo 



f 



OOOOOOoo 



oo 



g h i j lc I m n o p 

3377. Ditto, soft Bohemian, French and German. Per Ib., .75 

3378. Ditto, ordinary soft glass, according to quantity. 

Per Ib., .50 to .60 

3379. Ditto, single up to in. bore. Each, .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, 
| to f in. Per Ib., $1.00 

3381. Ditto, hard, free from lead, i to fin. " 1.25 

3382. Ditto, glass, white, of large bore. " 1.50 



LIST OF 

Numbers, Diameters and Yards Per Pound 



OF DIFFERENT SIZES OF 



COPPER WIRE 

ACCORDING TO THE BIRMINGHAM WIRE GAUGE. 



No. 
B.W.G. 


Diameter 
in 
Inches. 


Yards 
per 
Pound. 


No. 
B.W.G. 


Diameter 
in 
Inches . 


Yards 
per 
Pound. 


No. 
B.W.G. 


Diameter 
in 
Inches. 


Yards 
per 
Pound. 


10 


.134 


6.007 


19 


.042 


62.98 


28 


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 


is 


.095 


13.12 


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 


277.^ 


34 


.007 


2267 


17 


.058 


33.03 


26 


.018 


342.9 


35 


.005 


4444 


18 


.049 


45.83 


27 


.016 


434 


36 


.004 


6944 




As the number of Catalogues issued is limited, please preserve this Copy. 



N 



NEW YORK, January, 1873. 



176 E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 

3383. Tubing, Earthen, 1 inch bore. Each, $1.50 

3384. Ditto,, Porcelain. 

i in. bore, 1^- in. bore, 30 in. length. 

.75 $1.50 each. 





3385 3394 3396 3400 

3385. Ditto, ditto, with flanged ends. 

f 1 2 in. 

$1.00 1.50 2.25. 

3386. Ditto, Rubber, black or imvulcanized. 

i ft i in. 

.20 .25 .30 per foot 

3387. Ditto, ditto, vulcanized, lengths cut to order. 

i ft i * i f fin. 
.10 .12 .15 .20 .22 .30 .35 per foot. 

3388. Ditto, ditto, ditto, full pieces. 

f A i t ,i f in. 

.08 .10 .12 .15 .20 .25 per foot. 

3389. Ditto, ditto, ditto, heavy, i in. 25, .-& in. 30 per foot. 
3390. Ditto, rubber, extra heavy, barometer, to stand a heavy 
pressure, assorted sizes. Per Ib. $2.00 

3391. Ditto, thermometer. " .75 

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 Ib. $1.50 

3396. Upcast and Downcast Draught, model of, in glass, 

Each, $5.00 

3397. Urinals, male, of glass. .25 

3398. Ditto, " of rubber. " .50 



OF CHEMICAL AtfD 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. Tapor Index, Lippincott s. 

3402. Vases, earthen, French, flat bottom, for silver and other 
solutions held in acid, 10 galls., Each, $12.00 

3403. V Tubes, for condensing limb, 7 ins. long and f 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 

VogeFs (*as Bottle. See Woulff s Tubes. 
3406. Washing Bottles, Faraday s. 

8 oz. pts. qts. 

60 .75 .<jO each. 

3407. Watch Glasses, French, used in pairs, or singly as covers 
to beakers. 

1 li H 2 2i 2-J 3 in. 

.45 .50 .55 .75 $1.25 1.50 2.00 per doz. 

3408. Ditto, Bohemian, ditto, ditto, ditto, ditto. 

2i 3 3| 4 4J 5 in. 

$1.65 2.25 2.75 3.25 3.75 -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 5 6 in. 

$2.00 2.50 3.00 each. 

3411. Ditto, ditto, ditto, nickleized. 

5 o-J 6 in. 

$2.50 3.00 3.50 each. 

3412. Ditto, copper, of extra large size, $4.50 

to $10.00. 
3413. Ditto, porcelain. 

4 6 8 OZ. 3406 3415 
$1.25 1.50 2.00 each. 

3414. Ditto, ditto, with handle on side. Each, $1.00 

3415. Water Hammer. .75 

3416. Ditto, ditto, singing. L00 




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 mill. $6.00 

34:18. Ditto. 1 " T Vmili. 7.00 

3419. Ditto. 10 gramme to 1 mili. 1.50 

3420. Ditto. 10 " T V mili. 8.50 

3421. Ditto. 50 " 1 mili., 3 riders. 10.50 

3422. Ditto. 100 " 12.00 

3423. Ditto. 100 " T V mili., 3 riders. 13.CO 

3424. Ditto. 200 " 1 mili. 16.00 

3425. Ditto. Gold Assay Weights. 1.00 

All riders weigh 10 mili., unless otherwise ordered. 

3426. Assay Ton Weights, 4 A. T. to ^ 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 Ibs. Therefore, if One A. T. of ore assays 
1 milligramme, the ton contains,, of course. 1 ounce troy.) 

3427. Weights, 1 platinum grains to T V grain. $5.00 

3438. Ditto. 10 " T f - grain. 6.00 

3429. Ditto. 10 T oVo grain. 7.00 

3430. Ditto. 100 grains to T fo. grain. 7.00 



OF CHEMICAL AND PHYSICAL APPARATUS. 179 

3431. Weights, 1000 grains to T V grain, 3 riders. $10.00 

3432. Ditto. 1000 grains to ^ grain, 3 riders. 11.00 

3433. Ditto. 1000 grains to yJ^ grain, 3 riders. 12.00 

3434. Ditto, 4 oz. troy to T V grain. 8.00 

3435. Gramme Weights, in mahogany block, 500 grammes 

to 1 gram. $8.00 

3436. Ditto. 500 grammes to 1 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 T V grain. 4.00 

3442. Ditto. 2 " " " 5.00 

3443. Ditto. 5 " " " 7.50 

3444. Ditto. 10 " " " 10.00 

3445. Weights, sets of fractions of millegrammes, accurately 

balanced. Each, $2.50 

3446. Ditto, French, brass, -J to -iV oz. $1.50 

3447. Ditto, ditto, mahogany boxes, 50 grammes 

down. $3.00 

3448. Ditto, ditto, 100 grammes down. 4.00 

3449. Ditto, ditto, 300 " " 5.00 

3450. Ditto, ditto, 1000 " 
3451. Ditto, ditto, in polished wood boxes, 1 Ib. to -J- grain down. 
3452. Ditto, subdiyision of grammes. .50 

3453. Ditto, from 1 Ib. avoirdupois, down to . oz. $4.50 

3454. Wire, brass, for making scratch brushes, etc. ; No. 20 up to 

No. 40. Per Ib. $3.00 to 5.00 

3455. Ditto, copper, -rV in. Per Ib. $2.00 

3456. Ditto, silk wound. 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 Ib. $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 oz. qts. 

$5.50 6.6U 8.00 




3463 



16 oz. 
13.00 



qts. 
14.00 



3464. Ditto, with lamp. 

8 oz. 
$10.00 

Wurtz Apparatus, for Fractional Distillation. See Dis 
tillation. 

3465 Woulff s Apparatus, with gas bottles instead of flasks, 

and dispensing with lamp and stand. $4,00 to 6.50 

3466. Zinc, Filings. Per Ib. .25 

3467. Ditto, Sheet. " .20 

3468. Zincs, 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 Ib., .18 




E. B. BENJAMIN S DEsciKipTr 

FILTER QUICK. OASAMAJOK S. 

Each, $0 75. 

This Filter has been fully described in the 
August, 1875, number of the American Chemist 
and is found to be very useful, not only in fil 
tration, but also in thoroughly drying the pre 
cipitates afterwards. 

No. 367(1. 

CONSTANT WATER BATH LEVEL. Each, $7 50 

The cut annexed represents a very 
useful copper apparatus, contrived by 
Dr. J. Lawrence Smith, of Louisville, 
to maintain a continued level of water 
in a series of water baths. 

The outer vessel has an arm which 
sustains a glass pipette drawn at the 
lower end (C), and held in position by 
small pieces of caoutchouc tubing (A. & 
B). This pipette passes through the 
metallic swimmer (E) 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 How of 
water. The top of the glass pipette (B) 
is united to the water supply, and the 
discharge tube (D) projecting from 
is connected with the water baths. 




No. 3677. 

foot of the outer vessel. 



the 



Bun sen s Improved Water Bath tor Constant Level, 



Consists of the usual copper bath with concentric rings 
with the addition of a connecting tube running from the 
bottom and joined to a simple arrangement by which 
the level of the water in bath is maintained. The inner 
tube (A) passes through the bottom of the attachment 
(C), being held in place by a rubber tube, so that it may 
be lowered or raised to answer to the height of 
water required in the water bath. (B) is an outer tube 
through which the water is supplied from the hydrant, 
No. 31579. the overplus passing out through the tube (A). 

This supplies a want long experienced by chemists, for in using the old form, 
in case the analyst is called from his work, there is a risk of the water being 
evaporated from the bath during his absence. 
A tripod may be attached to the apparatus to support it. 




K. 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, etc., selected 
from my catalogue, to dealers near them, which goods 
were never bought from me by their agents, resulting in 
furnishing the chemist with poor apparatus, and reflecting 
unjustly on the character of my 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. 



E. ft. BENJAMIN S DESCRIPTIVE CATALOGUE. 

PROF. RICHARDS ASPIRATOR. 

A Substitute for the Bunsen Pump each, $1 50 

C represents the Aspirator invented by Prof. Robert H. 
Richards, of the Mass. Institute, of Technology, Boston, and 
used for the purpose of quick filtration. It is the result of a 
number of careful experiments made by the above gentleman, 
and for simplicity of design and the ease with which it can be 
manipulated, together with its efficacy, it recommends itself 
to all who wish a good effective filter-pump, without being 
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 pump. Upon 
allowing the water to flow through the latter, the air in the 
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 a crucible, 
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. 

Oasamajor 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 
NO. 367* ~ needle. This being a very uncertain, if not an impos 
sible undertaking, the idea occurred by Mr. P. Casa- 
raajor, of William^burgh, 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 




K. H. I!K \JAMINS 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 like 
a bell being provided with a circular disc of platinum perforated with 
fine holes. (The disc is not shown in the diagram.) 

The Mufhfx operand^ is as follows : The disc, whose diameter is about 
^Omm., 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 is con tinned 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 edie of the funnel holds a little of the pre 
cipitate which may be weighed with the funnel itself. 



IMPROVED FORM OF LIEBIG S POTASH BULB. 

By Alvergniat Freres, Paris .... each, $1 00 

This piece of apparatus is shown at E, and dif 
fers from what has always been known as Liebig s 
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, without the trouble of attaching wires to the upper 
part, and hang in fi 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 IK- most conveniently used, while at the same time per 
forming their work satisfactorily. 




E. B. BENJAMIN S DESCRIPTIVE CATALOGUE. 

PLATINUM. 

The increasing demand for the " non- blister ing" Platinum, 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 a comparison of the quality of these goods 
with those sold elsewhere. 

FllICTIONAL 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. The price will be about twenty- 
live 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 Troemner, which they will please substitute for 
those of Becker & Sons, published in my Catalogue of 72. Mr. H. 
Trcemner 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. 

CHLORIDE OF CALCIUM TUBES. 

Two Bulb with Interior Tube each, $0 50 

This is a new form of Chloride 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 
the two bulbs. The advantage which it has over the old form 
can be seen at a glance, although no one can fully appreciate 
its usefulness without having used both styles. When in use, 
the gas is caused to flow from the smaller end to the larger 
one, the large bulb and tube being filled with the drying mate 
rial, chloride of calcium. 

During the passage of the hygrometric gas, the aqueous 
vapors condense, for the most part, in the smaller bulb, only a 
comparatively 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. 



K. 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, u 
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 
lumps of chloride of calcium (instead of the same powdered), prevent 
them from falling through into the small bulb. 



RADIOMETERS. 

Crookes each $7 50 to $9 00 

The Kadiometer, invented by Wm. Crookes, Esq., 
P. R. S., of England, and manufactured in its most 
elegant form by Dr. Geissler, of Germany, the manu 
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 
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 orer 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 BARCLAY 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, 1 now 
sell at $40.00; ordinary Bunsen Burners, at $7.00, net, the doeen. 
&c., &c. 

Buyers will kindly compare the German and Bohemian glassware 
as 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. 2M18 with the German Funnels 
No. 2322, an approximation of the difference may be arrived at. 

The genuine Bohemian Flasks 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. 15. BENJAMIN S DESCRIPTIVE CATALOGUE. 

Again, the Beakers ordinary quoted at 1/3 are identical in size 
with my 0/2, and those called 1/5 are identical with my 0/4, &c. 
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 have 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, K 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 Jahresberichl 
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 renewed 
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. 



CHEMICALS AND REAGENTS. 



THIS List comprises the majority of Chemicals I keep, though 
rhere are a number of strictly commercial articles that usually rank 
under the head of Chemicals, which are omitted, but which I have 
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 
in glass stoppered vials, for either class illustrations or Laboratory 

purposes. 

E. B. BENJAMIN. 



Z82 E. B, BENJAMIN S DESCRIPTIVE CATALOGUE 



ABBREVIATED TERMS AND TRADE MARKS, 

USED IN THIS WORK. 

Sol. -Solution ; Precc.=Precipitated ; lb.=poimd ; oz.=ouiice ; 
dr.=drachm; gr.=grain; grm.=gramme; Mg.=Milligramme ; 0. 
C.=Centimeter ; pt.=pint; qt.=quart; gal.=galloii ; Opt.=best, 
next to pure ; pure=next to C. P. ; 0. P.=Chemically pure ; U. S. P. 
=United States Pharmacopoeia ; Puriss=extra C. P. ; T=Tromms- 
dorff s; M.=Merck s; Spec.=Specimen ; Com l=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. 



COMPARATITE TABLE OF WEIGHTS. 

1 pound Avoirdupois, 7000 grains. 

1 ounce 437i " 

1 drachm, 54.69 " 

28.35 grammes, 1 ounce Avoirdupois. 

31.10 " -= 1 " Troy. 

453.60 " =1 pound Avoirdupois. 

1 15.43J grains. 

100 " = 3.53 ounces Avoirdupois. 

100 = 3.21| " Troy. 

1000 " = 1 Kilo 

1 Kilo., = 2. 20i Ibs. Avoirdupois. 



FRIGE LIST. 



A. 

Acetone, C. P .Per oz., $ .30 

Acid, Acetic, U. S. P., Sp. Grav., 1047 Per lb., .30 

" Ditto, strictly C. P., Sp. Grav., 1047 U. S. P., same 

quality as Baufoy s best Eng Per lb., .50 

" Ditto, Acetic, Glacial Per lb., $1.25, Per oz., .15 

" Antimonic, 0. P " .15 

" Arsenic Per lb., $1.50 " .15 

" Arsenious, C. P " 1.00 " .10 

" Ditto, Lump Coml., very com .... " .20 

- Boracic, C. P. fused, pow d .15 

" Benzoic, True " .25 

" Ditto, Com. Artificial " .15 

" Butyric, Puriss. .,; " .40 

" Camphoric, True. , ; per oz., 2.50 

" Chloric < 

" Carbazotic, Puriss. . , . - " 1.00 

" Capronic " 3.50 

" Carbolic, White Cry.^t Per lb., $1.50 Per oz,, .15 

" Ditto, Com l " 1.00 " .10 

" Chromic, C. P., Cryst " .30 

" Cresylic, C. P., Cryst " 4o 

" Citric, C. P., Cryst.. .Puriss Per lb., $2.50 Per oz., .30 

" Formic, C. P .25 

" Fluoric. See Hydrofluoric, in 1 oz. and 8 oz. bot 
tles. 

" Gallic, Puriss " .49 

<( Gallotannic " ^5 

" Hippuric 3.00 

" Hydriodic " 1 25 

" Hydrobromic " .60 







" 



184 

Acid, Hydrocyanic, U. S. P ........................ Per oz., $ .10 

" Hydrofluoric, in gutta percha bottles, with bottle . Per lb., 2.25 

" Hydrofluosilicic, C. P ........................ " 1.00 

" Hydrochloric. See Muriatic. 

" Hypophosphorous, Sol ....................... Per oz.. .40 

lodic, C. P ................................. u 2.00 

Lactic, C. P., Cone .......................... .50 

Malic ...................................... 1.50 

Margaric, C. P ............................. Per dr., .40 

" Meconic ................................... Per oz., 8.00 

" Mucic .................................... " 1.00 

Molybdic, C. P., T .......................... Per o;;.. .50 

Muriatic, C. P., in 1 and G lb. bottles .......... Per lb., .27 

" Ditto, Com l ............................... " .06 

" Ditto, special price for Carboy. 

Nitric, C. P., 1 and 7 lb. bottles ............... .35 

Ditto, ConrL Per carboy, special prices ...... " -15 

Ditto, Fuming Red. C. P. (rare quality) ....... " 2.25 

" Ditto, ditto, ditto .......................... " 1.50 

" Nitrohydrochloric, Pure ..................... " .50 

" Oxalic, C. P. T., according to quality .......... " 1.25 

" Ditto, C. P., Am., very superior ............... " .50 

" Ditto, Coml ................................ " .25 

Oleic, C. P .................................. Per oz., 1.50 

Phosphoric, U. S. P ......................... " .05 

Ditto, Glacial, C. P- T ....................... " .20 

Phosphorous, C. P., Sol ...................... " .10 

" Phenic, Crystals, Pure ....................... " .15 

Phosphomobybdic, Sol ....................... " 1.00 

Phosphowolframic, Sol ...................... ". .80 

Pyrogallic, Leviss, C. P. T ................... 80 

" Ditto, Alb. Sub. Puriss ...................... " .50 

" Pyroligneous, Refined . ". ..................... Per lb., 1.00 

" Prussia, " Scheeles " ......................... Per oz., .25 

44 Salicylic ................................... " .50 

Pictric, True .......... ..................... Per oz., -40 

" Silicic, Pure Native, Pow d .................. Per lb., .25 

" Ditto, C. P., Precc., T ....................... Per oz... .25 

Succinic, Pure Alb. Cryst ........ " 40 



" 



" 



OF CHEMICAL AND PHYSICAL APPARATUS. 185 

Acid, Stearic, Puriss., for delicate analysis Per dr., $ .60 

" Ditto, Com Per oz., .10 

" Suberic Per dr., 1.75 

" Sulphuric, C. P., 1 and 9 Ib. bottles Per lb., .40 

" Ditto, Com l " .06 

" Ditto, Nord, in cans and bottles " .35 

" Ditto, per Carboy, special price. 

" Tannic, C. P., Leviss Per oz., .30 

" Ditto, Pure " .15 

Tartaric, Pure, Cryst Per lb., .75 

" Ditto, C. P., for accurate analysis " 1-75 

" Ditto, Powdered, Com " .60 

" Titannic Per dr., .40 

" Uric, C. P., Cryst Per oz., 1.25 

" Uranic, Com Per oz., 1.25 

" Yalerianic Per oz., -60 

Vanadinic, C. P Per dr. 8.00 

" Wolframic. See Tungstic Acid Per oz., .40 

Alcohol, Oopr.c. ; special price large quantity Per gal. 3.00 

" Absolute Per lb. .80 

" Ammoniated " 1.00 

* Amylic 2.50 

" 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 
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 

or cask Per gal. 1.40 

Albumen, from blood Per -z. .25 

" " milk " .50 

" eggs .20 

Aldehyde Per oz.. .40 

Aluminium, Mett, foil 2.JO 

" " wire 2 Qi> 

" Chloride, C. P .35 



186 E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 

A hi minium, Fluoride. Native ; see Minerals Per IK, $ .5C 

Alumina, Precc., Puriss., hydrated Per lb., 2.00 

" Acetate Per oz. .30 

" Bromide Per oz., .50 

" Sulphate, Pure Cryst. Leviss Per oz., .20 

" " and Ammonia, Puriss Per lb., 1.00 

" Crude, Com " .10 

" Ammonia, Cryst. and Pulv " .25 

Alum, Potassa C. P. T .25 

" Iron Per oz., .10 

" Chrome, Cryst., Pure " .10 

" Ammonia, Ferric Per lb., 1.00 

Amber, small pieces Per oz., .20 

Ammonia, Aqua, Cone., TJ. S. P., 4 lb. bottles Per lb., .35 

" Liquor. F. F. F., 26 per cent, of gas Per lb., .35 

Per oz., .05 

" Spirits, TJ. S. P Per lb., .20 

" Acetate, Cryst., C. P Per oz., .50 

Ditto, Sol., C. P .25 

Arseniate " .30 

Benzoate, C. P " ,90 

" Bichromate " .40 

" Bromide " .35 

" Carbonate, pure Per lb., .75 

" Ditto, Com " .60 

" Citrate and Citrate "Iron Per oz., .25 

Citrate Per lb., 2.50 

" Gallate, pure Per oz., 1.50 

" Hydrosulphide, Liq Per lb., .75 

" Hydrofluorate, Cryst, C. P Per oz., 1.50 

" Hypophosphite " .30 

Molybdate, C. P., Cryst .75 

Monocarbonate, C. P Per lb., 1.50 

Chloride, C.P " .50 

Ditto, Com l " 

Nitrate, Cryst., C. P Per lb., $1.00, Per oz., .10 

fused Am., Pure Per lb., .40 

Oxalate, C. P., Cryst Per lb., $1.80, Per oz., .20 

Phosphate, Cryst., Pure " .20 



OF CHEMICAL AND PHYSICAL APPARATUS. 18? 

Ammonia, Succinate, T., Cryst. Peroz., $ .80 



" Sulphate, Com 


Per lb., 


.12 


" " C. P, 


tt 


.70 


" Sulphocyanide Per lb., 


$3.00, Per oz., 


.25 


Urate, C. P 


a 


.80 


" Valerianate , 


tt 


.80 


" Vanandate , 


Per gr., 


.20 


Amygdalin 


Per dr. 


2.75 


Amyle, Acetate 


...... Per oz., 


.50 


" Butvrate 


tt 


.50 


" Formate 


a 


.50 


Nitrite, Pure. 





.60 


" Valerianate 


tt 


.75 


" Hydrochlorate 


a 


.75 


A malgam, Mercury 


Per box, 


.75 


" Fusible , 





.50 


Antimony, Chloride, Sol 


Per lb., 


.40 


Cryst, C. P 


Per oz., 


.40 


Iodide, Cryst, C. P 


K 


.90 


" Proto Oxide, white, C. P 


a 


.15 


" Golden Sulphide 


Perlb., 


.75 


Black " Levigated. Per lb., 


.35, Per oz., 


.05 


" Ditto, Native 


Per lb., 


.20 


Tartrate, Cryst, Pure 


a 


2.00 


" Ditto, and Tart Potassa 


a 


1.25 


Mett, Best . . . . 


u 


.20 


Aniline, Pure, Liq 


a 


2.50 


Sulphate, C.P 


Per oz., 


.75 


Eed 


u 


90 


" Scarlet 


(( 




Blue 


a 




Violet 


(( 




Pink 


u 




" Green 


tt 




Black 







" Yellow 


a 




" Orange 


t( 




Purple 


" 




Animal Charcoal, Gran., Best. . 


,.Per lb., 


.10 



188 E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 

Animal Charcoal,, Com Per lb., $ .08 

" " Pulv. Fine " .10 

Arsenic, Native Mett " .50 

" Pulverized " .25 

" Bromide Per oz., J.25 

" Iodide " .75 

" Chloride < .80 

Oxide Proto. See Acids. 
a a Per " i( 

Sulphide Per Per lb., .80 

" " Proto .25 

Argols, Crude " .25 

Kefined " .30 

Asparagus C. P Per dr., .30 

Asphaltum, Opt Per lb. .15 

Asbestos, Long Fibre Per oz., .15 

" Short " Per lb., .60 

Atropia, Pure Per gr., .06 

Sulphate " .06 

B. 

Barium,, Chloride, Com Per lb., .20, Per oz., .05 

" " C. P " .30, " .OS 

" " Puriss., T Per lb. .40 

" Fluoride Per oz., 1.00 

" Mett, Spec Per Gram. 4.50 

" Iodide, C. P Per oz., 1.00 

" Hyperoxide, C. P., T " .45 

" Proto-oxide, " " .30 

" Sulphide " .10 

iiaryta, Acetate ". " .20 

Caustic, Cryst, C. P Per lb., $1.00, .10 

Garb., Native Per lb. .25 

" Precc., C. P., T .80 

Chlorate, C. P., T Per oz., .40 

" Nitrate, Cryst, C- P Per lb., .50 

" Com l " .30 

" Sulphate " .75 

" Opt, Pure Per oz., .10 



OF CHEMICAL ASTD PHYSICAL APPARATUS. 189 

Baryta, Water, per fluid oz Per oz., $ .05 

Beeswax, White " .10 

" Yellow Per lb., .75 

Berberine, Pure Per oz, 3.50 

" Sulphate " 4.25 

Benzoin, Gum Per oz., .10 

Benzole, Genuine Per pt., .60 

Benzine " .15 

Bismuth, Mett Per oz., .75 

" Ammoniocitrate " .10 

" Mett, Puriss " .75 

Acetate, Pure " .25 

" Garb .75 

Chloride " .30 

" Oxide, Hydrated " .75 

" Xitrate, Cryst " .40 

" Sub. ditto, Powdered te .50 

" Tannate " .80 

" Valerianate, C. P " 1.50 

Black Flux Per lb., 2.00 

Bono- Ash, Am. (by the bbl., or 50 Ibs., or more, spe 
cial price) " .25 

French " .40 

Washed .60 

Bleaching Powder " .15 

Borax, Refined .16 

Glass Per lb., $3.00, Per oz., .25 

Pulverized " .10 

Brazil Wood, True Per lb., .25 

Bromoform, C. P Per oz., 2.50 

li romine, Pure " .25 

Chloride .75 

Brucia, C. P Per oz., 4.00 

" Nitrate " 4.50 

(J. 

Cadmium , Mett, in stick ; Pure, T Per oz., .25 

Ribbon " .75 

" Bromide.. " .05 



190 E. B. BEXJAMIK S DESCRIPTIVE CATALOGUE 

Cadmium, Carbonate Per oz., $ .75 

Chloride " .60 

Iodide .75 

Sulphide " 1.00 

Oxide .75 

Sulphate " " .40 

Caffeine, Pure ; very superior " 4.50 

Citrate Per oz., 5.00 

Casein, " Pure Per oz., .10 

Calcium, Mett, per Spec , Per gram. 1 0.00 

Acetate, C. P Per oz. .15 

Carb., Precc.; Pure Per lb., 1.50 

Chloride, Fused ; C. P., T 1.00 

" Gran l .50 

" " Cryst. " .25 

Bromide, Pure Per oz., .30 

Iodide " .50 

Nitrate, C. P., Cryst .20 

. " Fluoride, Pow d Per lb., .10 

" " Cryst., native selected " .30 

Phosphide, Pure, T Per oz. .65 

Phosphate Per lb. $2.00, " .25 

Sulphide .08 

Camphor, Best Borneo .07 

Carbon, Bisulphide Per lb., .50 

Trichloride, Liquid Per oz., 1.25 

Carbo, Animalis Per lb., .10 

Carmine, Opt Per oz. i.oo 

Cerium, Mett, per specimen Per gram. 7.50 

Chloride Per oz., 2.00 

Nitrate 1.50 

Oxalate, Pure 1.00 

CaBsium, Chloride Per Gram. 6.00 

and Rubidium, Chloride Per gr. .25 

Cethyle , Per lb., 1.00 

Chameleon, Mineral, Pure Per oz., .12 

Chloral, Hydrate " .25 

Chlorine, Aqueous Sol. of Per lb., .15 

Charcoal, Willow, Pow d, Pure " .35 



OF CHEMICAL AKD PHYSICAL APPARATUS. 191 

Charcoal, Willow, Prepared in blocks Each, % .10 

Chloroform,, Opt Per lb., $1.25, Per oz., .20 

Chromium, Mett, Per gram. 1.20 

Chrome, Alum. See Alums. 

Chromium, Chloride, C. P Per oz., 2.50 

Sesqui Chloride -40 

" " Oxide...... " .30 

" Green " " .30 

Garb " LOO 

Cinnabar. See Minerals. 

Copper, Acetate, C. P., Cryst. T " -15 

" " Com., Pulv d .05 

" Arseniate. C. P. T < -40 

" Arsenite " .25 

Ammoniated, C. P., T .20 

" Carbonate, C. P., Precc " .15 

Chloride, C. P., T .50 

Di. " " .25 

Chromate < .20 

" Cyanide, C. P .50 

" Formate Per dr., .40 

" Iodide, C. P Per oz., -75 

" Nitrate, Cryst, C. P , T Per lb., $1.00, " -10 

Oxalate .25 

Oxide, C. P., Gran. Pow d, T. .Per lb., $2,50, " .25 

" Pure, Pow d, " 2.00 f .15 

" Reduced Puriss, Pow d .35 

Mett, Pure Gran Per lb., $1.85, . 15 

" " Thin Foil, Pure " .75 " .10 

" Sheet .65 - 08 

" Scraps .50 " -06 

" Turnings " .40 " -05 

Sulphate, C. P., T .45 -10 

Com l .15 " -05 

Ammoniated. C. P. T .15 

Sulphide .12 

Cotoalt, Acetate, C. P .75 

Mett, Cubes 1.25 

" C. P., T 2.50 



192 E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 

Cotialt, Chloride, C. P., T Peroz.,$ .60 

Carb.,C. R,T .75 

Nitrate, C. P., T . .65 

C. P., Sol. F. T " .40 

Oxalate, C. P., T i.oo 

Oxide, C. P 1.00 

" Com! 

Codeia, Pure Per dr., -j^O 

Collodion, E. Sol Per oz., ^3 

Cotton. Best Parry s " .75 

Conine, Pure German Per dr., 1 75 

Cream Tartar,, Pow d Per lb., .50 

Creasote, White Per oz., 1 15 

Crocns-Martis, Per lb., .12 (e ,05 

Cryolite, Best. See also Minerals. . .Per lb., .25 to .50 

D. 

Dextrine, Opt, Pow d Per lb., .20 

Distilled Water Per gal., .20 

Dutch Leaf Per book . 10 

Didymium, Chloride Per gram. 7.00 

E. 

Ether 3 Sulphuric, Lot, .60 Per lb., .90 

Veritable, Cone " 1.35 

Acetic, Pure Cone Per oz., .10 

Butyric " .30 

Chloric " .20 

Formic " .40 

Nitric, Spirits of Per lb., 1.25 

" Oneanthic, Pure Per oz., 8.00 

Emery, Flour Per lb., .25 

Pow d " .20 

F. 

Fehling s Sol., for physicians and sugar-house use, 

indicating percentage of grape sugar Per oz., .12 

Felspar, Pow d, White Per lb., .15 

Native, Cryst " .10 




and the working nnalifipc; nf th< 



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 
i% 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. 




4-inch, $1.00; 5-inch, $1.50; 
% -inch, $4.00; 12-inch, $5.00. 



PRICE. 
-inch, $2.00; 7^-inch, $2.75 ; 



, $3.50 ; 



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 a rule that any burner at its maximum power will boil 
the contents of a porcelain dish double its own diameter, 
i. <?. , a 4-inch is best for dishes up to 8-inches diameter, &c. 

PRICE. 
Hot Air Bath, 4-inch, (only size in stock), 




$2.00 




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 
No. 7, Low Temperature Burner, without blast pipe C, . . . 1.75 



FLETCHER S LABORATORY APPARATUS. 



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 

No other part of the burner can be damaged 




. 



sheet of gauze put in in a few seconds. 
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 

PRICE. 



No. 45. Horizontal Solid Flame Burner A, diameter \y z inch, 
No. 45. Horizontal Solid Flame Burner B, diameter 2 inches, 
No. 45. Horizontal Solid Flame Burner C, diameter 2^ inches, 



$2.00 
2.50 
3.00 



Nos. 46 and 46b. FLETCHER S SOLID FLAME 
BURNERS. The flame is solid and the same temperature throughout ; 
the usual heating burners having a flame with a hollow center of unconsumed gas. 




No. 46. 




No. 4 6b. 



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. 4<5b. 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. 

PRICE. 

No. 46 or 46b. Solid Flame Burner, (Nickel-plated), . . . $2.00 
Extra gauze tops, each, . . . . . . . . . .25 



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. 





No. 200. 



size, gas consumption 2 

" " " 3 

" " " 7 



PRICES. No. 201. 

Without Tripod. With Tripod. 

ft. per hour, No. 200, $0.75 No. 201, $1.00 
" " " i. oo " 1.25 

" " " 1.25 " 1.50 



FLETCHER S TUBE FURNACE. This will heat an iron 

tube ^ to i^-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. 

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 by this 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 by a sliding plug in the tube, 
enabling the combustion tube to be heated from 
one inch upward. The above can be used with 
air gas or coal gas. The foot-blower No. 90 
New Pattern is best for the furnace. 

PRICES. 

12-inch. 

For draft or blast, with adjustable flame length, . $15.00 
As above, without adjustable length of flame, . . 12.00 
With fixed length of flame, without blast, . . 10.00 




Engraving shows the Furnace open ready 
for the introduction of a tube. 



i8-inch. 24-inch. 

$20.00 $25.00 

I7.OO 22.OO 

15.00 20.00 



No. ill. NEW PATTERN GAS SUPPLY TAPS for fur- 

nace and general work, with quadrant and pointer to regulate exact quantities of gas sup- 
pi ied. 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. 



$0.90 




NO. m, wth 

clear bore, 

No. in, with 

clear bore, 



No. in. 



No. 114. For attach 
ing to gas pipes by 
means of a thimble. 

PRICE. 

No. 114. ^ -inch clear bore, $0.75 No. 114. 
No. 114. y 2 -inch clear bore, 0.95 




FLETCHER S LABORATORY APPARATUS. 



No. 147. FLETCHER S INSTANTANEOUS WATER 
HEATER. Giving instantly a continuous supply of pure water, free from 

the products of combustion, and suited for all purposes. 
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 
leg. Fahrenheit, or will boil 15 quarts per hour. It is 
not designed for baths, being too small to heat a large 

-i I ,> JKI ^^^| . bath efficiently, but is specially intended for lavatory 

^ mT^i purposes and the general odd work of laboratories, re- 

J UiiKfi "^%- freshment rooms, railway stations, lavatories, and gen- 

^ - 4 " eral domestic purposes, where hot water is constantly 

JL^WJ wanted quickly. The gas supply should be ^-inch 

f|WHi^I| pip e > ail( l 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, . . . I3-OO 

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, ^ 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 

confined room the products of combustion should be carried away, as all Instantaneous 

Water Heaters vitiate the air rapidly. 

PRICE. 

No. 247. Instantaneous Water Heater, without burner, in nickel-plated case, $3.00 
With burner, (No. 47) complete, as engraved, . . . . . c.oo 




No. 247. 



FLETCHER S LABORATORY APPARATUS. 



FLETCHER S PATENT SOLID FLAME BATH 
HEATER. This 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 not 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 on a 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. 

PRICE. 
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. 18. 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, $1-75 



FLETCHER S LABORATORY APPARATUS. 



9 



Foot Blowers. 





No. 




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. 

PR-ICES. 

No. 9, Foot Blower, new pattern, . $5.00 
No. ga, Foot Blower, new pattern, . 6.00 
No. 9^, 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. If the 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 
S 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. ga, " .... 5.00 

No. gb, " " .... 7.00 

Extra rubber discs for No. 9, each, . 50 
" " No. ga, " .75 
" " " " No. g6, " i. oo 

Extra nets, each, 50 

No. 9<5, (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. 



10 



FLETCHER S LABORATORY APPARATUS. 



FLETCHER 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 

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 
shaft and straight shaft. 

PRICES. 

No. 30. Taper Shaft, brass, . $0.65 
No. 30^. Straight Shaft, . . .55 
No. 30^. Straight Shaft, with 

hard rubber mouth-piece, . .65 
No. 3Or. .Folding in case 5 ^x 
J X X K i n -> w i tn both hot 
and cold blast jets, . . . i.oo 



Patented Dec. 25, 1877. 



No. 30. Taper Shaft. 



No. 3oa. Straight Shaft. 



No. sob. 



A o. 3oc. 



No. 31. FLETCHER S HOT BLAST CHEMICAL BLOW- 
PIPE. A pattern of the ordi- < ^fr3g*^"*aBB - - -^- 

nary chemical blow-pipe with the patent , r 

hot blast arrangement. Hard rubber No 3 - Patented Dec. as , .877. 

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. 31^. Folding in case 5 
i l /z in., with both hot and cold blast 
jets, and two mouth-pieces. 

PRICE, . . . $i-75 ^ No.3ib. 

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. 
I 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. 
AUTOMATON BLOW-PIPE A. 

PRICE. 

Automaton Blowpipe on stand, as engraved, for jets not exceeding 
Y% inch bore, complete with one jet (No. 55 sent unless other 
wise ordered), ......... $4.00 

Extra jet, any size to ^-inch bore, . . . . . .10 



AUTOMATON HAND 
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. 

PRICE. 

Automaton Hand Blowpipe. . $3-5 
Extra jet, any size to ^-in. bore, .10 





AUTOMATON BLOW-PIPE B. 




AUTOMATON BLOW-PIPE C. 



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 >-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 
erally used shall be clearly stated, 
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 iault 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 ^b 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. 9^. For Blowers, 
see page 9. PRICE Automatic Blowpipe C, $4.00. 



12 



FLETCHER S LABORATORY APPARATUS. 



No. la. 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 a spiral form and both are heated by a small Bunsen 

burner underneath, which is controlled by a sepa 
rate stop-cock. The 

power of this arrange 
ment is about double 

that of an ordinary 

blow-pipe ; and when 

tJie jet is turned douni 

to a small point of 

flame it will readily 

fuse a moderately thick 

platinum wire. In 

power it is nearly equal 

to the oxy-hydrogen 




Ao. la. 




No. 



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. 

PRICE. 

No. la, 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. la, but 

with upright jet. 

PRICE. 

No. 2a, Hot Blast Blow-pipe, . . $6.00 
With Fletcher s new Mouth-piece, 60 cts. extra. 



J\ o. ja. 



No. 3a. HOT BLAST BLOW 
PIPE. Constructed on the same principle 
as No. la, but with bench light arranged to swivel 
so as to carry a light to the blow-pipe jet. 

PRICE. 

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 all users. 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. 



No. 4. IMPROVED HERAPATH 
BLOW-PIPE. For general 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 
work before it. 

PRICE. 

,No. 4, Improved Herapath Blow-pipe, .... 

Xo. 4<, Improved Herapath Blow-pipe, without the joint A, 

With Fletcher s new Mouth-piece, (see No. 42), extra, 





No. 4b. 



$3-75 

3.00 

.60 




No. 8. 



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 
serves to make the Ingot mould hot, and the whole is tilted over 
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. 

PRICE. 

Melting Arrangement, with both wire and plate moulds, $3-25 
Stand for Melting Arrangement, .... .75 

Wire Moulds, 1.25 

Plate Moulds, 1.25 

Extra carbon crucibles, without slides, per doz., . i.oo 

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. 
PRICE No. Sa, Blow-pipe, . . . . $2.25 

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 l /i inch bore and requires a supply from a foot blower. 

PRICE. 

No. Sc, Brazing Blow 
pipe, with two lever 
stop-cocks, as in en 
graving, . $3.50 
No. &r, Brazing Blow 
pipe, without stop 
cocks, . $2.50 





BLOW-PIPE JET TIPS for No. 4, No. 4$, and all mouth blow 
pipes. These jet tips screw on, and any size can be supplied. 

PRICE. 

Blow-pipe jet tips, brass, each, . 10 cts. 
BORE OF JETS. Stubbs Steel Wire Gauge. Blow-pipe jet tips, platinum, each, 25 cts. 



65 



60 



55 



FLETCHER S LABORATORY APPARATUS. 



AIR 




No. 8d. NEW MELTING AR 
RANGEMENT. (Improvement 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, $3.00 

Extra Carbon Crucibles, per doz., 1. 75 



Engraving sligliily under half size. 



FLETCHER S GAS OR 

As used at Woolwich Arsenal, Eng 
land. Invaluable for small forgings. 
Size of hearth, 15x18 inches. By 
this simple arrangement, steel tools 
can be forged without injury, by the 
use of gas. It will be found a perfec* 
arrangement for Small Forgings 
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. 



PETROLEUM FORGE. 




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 usefl 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. Qb 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. 

PRICES. 



Foot Blo.wer, No. Qb, new pattern, 

Blowpipe, No. 8e, ...... 

Hearth, 

6 ft. Gray India Rubber Tubing, 

Forge complete, with Foot Blower, Blowpipe, etc., 



$8.00 
4-5 
4.50 

1. 00 

18.00 



FLETCHER S LABORATORY APPARATUS. 



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, 



$1.00 



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 

by 4^ by i^ inches outside measure) for the pocket. PRICE, $4.00. 



FLETCHER S IMPROVED 

wick holder will be found one of the best 
forms ever made, in addition to the fact 
that the angle can be adjusted as required 
by simply revolving it in the fixed collar. 
The wick holder lifts out for refilling. 
Lamp engraved half size. 
PRICE. 

Blow-pipe Lamp, polished brass, $ .75 
Blow-pipe Lamp, nickel plated, i.oo 
Blow-pipe Lamp, for tallow, . .30 



BLOW-PIPE LAMP. The 



WICK HOLDER TURNED 
HALF A REVOLUTION. 




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 
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. This is 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 will be fully appreciated. 
PRICE. 
No. <. Blast Bunsen Burner, . $3*5O 




1 6 FLETCHER S LABORATORY APPARATUS. 

FLETCHER-PLATTNER BLOW-PIPE FURNACE, 
FOR CAPSULES, OR CRUCIBLES. ^-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 crucible $0.30 

Blow-pipe Furnace with blast Bunsen, taps for 

gas and air, and furnace support, without 

blower, as per cut, 4.25 

Clay Crucibles, per doz., .60 

Clay Capsules, per doz., .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 ^, or 
J^-inch bore. For the 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. 

IT 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. 1 1 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 to a 
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. 




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 Ibs. 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 Ibs. 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 
rial, in one piece, with an ^opening in the centr.e 
for convenience in examining work. 

DIRECTIONS. 

When the burner is first lighted, the milled handle 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. 



PRICES. 
No. 15, Crucible Furnace, complete, . 

PRICES OF SEPARATE PARTS. 

Plumbago Crucibles, No. 3, each, . . . 
Plumbago Cylinders, ...... 

Crucible Tongs, 17 inch, ..... 

Crucible Tongs, 12 inch, ..... 

Fire clay casing, ....... 

Lid, 

Grate, ......... 

Burner, ....... 



$18.00 



; .25 

.60 

75 

-65 

3.00 

i.oo 

I.OO 
IO.OO 



i8 



FLETCHER S LABORATORY APPARATUS. 



No. ii. SMALL LA 
BORATORY FURNACE 

for crucibles. This takes crucibles 
up to 2^ by 2% inches outside, and 
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 l /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 
with the new burner. See page 1 7. 




No. //. 



PRICE. 
No. n, Small Laboratory Furnace, ..... 

No. n, " including muffle fittings (see No. 

Plumbago Domes, each, . ..-,., 

Plumbago Crucibles, No. o, each, ...... 

Crucible Tongs, 12 inch., ....... 

No. 16. SMALL CRUCIBLE 
FURNACE, taking crucibles up to 2^ 
by 2j^ 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. 

PRICE. 

No. 16. Small Crucible Furnace, complete, $13.00 
Extra Cylinders, each, . . . . .25 

Extra Grates, each, . . . . . .40 



2), 





A o. 16. 

No. 14. PERFECTED LADLE 
FURNACE, with Fletcher s new Solid Flame 
Heating Burner. This is a better ladle furnace in 
every respect than any yet made. The burner is simple, 
safe and works equally well with any gas supply availa 
ble, giving proportionate speed of working. The worst 
possible accident to the burner can be remedied in a 
minute at the cost of a few cents. All other patterns of 
ladle furnaces are discontinued. 



PRICE. 
No. 14. Ladle Furnace, 



$5-00 



No. 14. 



CRUCIBLE TONGS. Malleable iron, a very neat pattern. 

PRICES. 
12 inch, ........... 65 cts. 

17 inch, 75 cts. 



FLETCHER S LABORATORY APPARATUS. 



MUFFLE FURNACES 

For assayers, enamelling, and all purposes where exact 
temperatures are required, not exceeding the fusing 
point of copper. The burners for these furnaces are of 
the same construction as the No. 15 Crucible Furnace. 
Size No. 2. (See cut page 1 8.) Muffle 2% x 3 x 2^ 
in. inside. Requires Y^ -inch bore gas pipe and tap. 

Price, $18.00 

Extra Muffles, each, .75 

Extra Muffle Domes, " .75 

Size No. 3. Muffle, inside clear working space ex 
clusive of neck 3x4x2^ in. high. Requires 
^-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 

Extra Muffles, each, i.oo 

Extra Muffle Domes, " i.oo 

Size No. 4. Inside muffle space 3^ x 5 x 3 in. high. 
Requires f^-inch clear bore gas pipe and tap. 

Price, $25.00 

Extra Muffles, each, 1.25 

Extra Domes, " 1.25 

Size No. 5. Inside muffle space 4^ x 7 x 3^ in. 
high. Gas supply as above. . . Price, $35.00 

Extra Muffles, each, 1.50 

Extra Domes, . . " 1.501 

Plumbago fittings and crucibles must be 
heated slowly the first time they are used. 




Muffle Furnace. Size No. j, 



GENERAL INSTRUCTIONS 
FOR FLETCHER S GAS FURNACES WITHOUT BLAST. 



A chimney or stove pipe 8 or 10 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 so 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. Plumbago fittings 
and crucibles must be heated slowly the Jirst 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 j^-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. 



2o FLETCHER S LABORATORY APPARATUS. 



New Blast Gas Furnaces. 




No. 41. FLETCHER S PERFECTED INJECTOR GAS 
FURNACE for Metallurgists, Jewelers, Chemists, iron and 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 % i ncn 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 and the 
smallest foot blower, the small furnace 
will melt a crucible full of cast-iron 
scrap in thirty minutes ; starting 
with all cold. Allowing five cubic- 
feet of gas for heating up, it re 
quires about four feet of gas for every 
pound of cast-iron melted. P or small 
work it is as cheap as a coke fur 
nace, and not one quarter the trouble. 

ULOWING. The quantity of air : 

required is exceedingly small, much ^- 4 f > f or Gas. 

less than even the original Injector Furnace, and may be supplied with the No. ga or 
9/> 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 Ib. size furnace, ^ in. pipemo to 40 ft. of gas $* hour. 
Gas supply required, 6 Ib. size furnace, l / 2 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. 

P.efore 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. 

r RICES OF PERFECTED INJECTOR FURNACE, No. 41. FOR GAS. 

Furnace A, taking No. I crucible, capacity 2 Ib. copper, complete, . $ 9.00 
Furnace P>, taking No. 3 crucible, capacity 6 Ib. copper, complete, . 10.50 
For foot blowers, see page 9. 



FLETCHER S LABORATORY APPARATUS. 



21 



No. 41. 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. 40^ 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 
simple, cheap and effective apparatus for obtaining high 
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 




a short time. 

All oil furnaces work 




No, <//, for Petroleum. 



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 INJECTOR FURNACES 

FOR REFINED PETROLEUM. 

Furnace A, taking No. I crucible, two burners, without blower, 
Furnace B, taking No. 3 crucible, three burners, without blower, 
Furnace C, taking No. 6 crucible, four burners, without blower, 



$12.00 
15.00 
18.00 



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 
mu file 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 ;^l!!llllli^S!I!i 1I^^9HRII^^!^ GAS 
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. 

PRICE. 




No. 141. 



Combined Crucible and Muffle Furnace, for gas, 
Combined Crucible and Muffle Furnace, for gasoline, including 
Generator, without blower, ...... 

Extra Muffles 

The No. 9 > blower (page 9) is required with this furnace. 

Orders should specify particularly, for " pas "or " pasoline " or " r 



$15.00 

30.00 
1.50 



22 



FLETCHER S LABORATORY APPARATUS. 



No. 241. PERFECTED INJECTOR COMBINED 
CRUCIBLE AND MUFFLE FURNACE. 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 
cible and Muffle Furnace, 
for refined petroleum, 
without blower, . $21.00 

Extra Muffles, . . 1.50 
The No. f)b blower is 

required with the furnace. 



No. 241. 




No.40c. GASOLINE GENERATOR AND FURNACE. 




This consists of the No. 40^ 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. 

( lasoline Generator for No. 40^, . . . . . . 

Furnace No. 40^, Generator, Blower and Tubing complete for use, 
Fire Clay Pot, extra, ........ 

Fire Clay Cover, extra, ........ 

Plumbago Crucibles, No. oo, each, ...... 

Crucible Tongs, ......... 

The foot-blower furnished with the above is No. qa. 



$6.00 
16.50 
75 
35 
.20 
.65 



FLETCHER S LABORATORY APPARATUS. 



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 -,% or f 
will work it efficiently. It requires a 
very small supply of gas. About IO 
cubic ft. per hour is sufficient for most 
purposes. 

Crucibles must not exceed -z\ by 2 
inches. Any common blow-pipe bel 
lows will work the furnace satisfactorily No. 40. 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, 

No. 9. P oot Blower, ..... 

No. ga. Foot Blower, large high pressure, 

Plumbago Crucibles, No. oo, each, 

No. 40. Fire Clay Pot, extra, . 

No. 40. Fire Clay Cover, extra, 



$3-50 
4.00 
5.00 

O.2O 
0-75 

0-35 



A >i 

used with the 



FURNA CE WITH IMPROVED 

t r Burne r is made of the same pattern as that 

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 
burner tight up against the casing. 
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. 4CW, Perfected Burner, without blower, 
Extra Burner, 



$4.50 
2.50 



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 advantages 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 
^SSfc^H^ ^_^ 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 lamp 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 ^ Ib. of copper or 
about 10 ozs. of gold. 

PRICE. 



No. 40^, Crucible Furnace for Petroleum, without blower, 
No. ga, Foot Blower, ....... 

Plumbago Crucibles, each, ...... 



$5.00 
5-00 

O.2O 



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 B 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. oo. 2 inches diameter, 2% inches high, 



i. 4# 

Crucible Covers, per doz., 



I A 

4 



20 cents. 

2O 

22 

23 

25 

60 

75 



FLETCHER S LABORATORY APPARATUS. 



No. 44. FLETCHER S GASOLINE GENERATOR AND 
FURNACE.- FOR HIGH 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 
used owing to the presence of 
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 
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 at least equal 
in power and convenience to the best gas furnace ever constructed. 

PRICES. 
Gasoline Generator, for No. 44, . . . . . . .$15. ex? 

Furnace A, Blower, Generator and Tubing complete for use with 

either gasoline or gas, ........ 31.00 

Furnace B, Blower, Tubing, and Generator complete, . . . 3 2 -5 

The engraving shows the B size Furnace, Generator and Blower, as when in use. 
Scale, I inch to the foot. 

The foot blower supplied with above is No. g/>. 




CLAY ASSAY CRUCIBLES. These are perfectly smooth, 

and of the correct porosity. 



FOR GOLD. 

Diam. Height. 
No. A, .... \y% in., 

" B,.... iy 4 



C, 

D, 



Per doz. 
in., $1.80 

l x " 1. 80 

l l /2 " 1. 80 

2 " 1. 80 



No. A,, 

" c! 



All styles and sizes of Crucibles furnished to order. 



FOR IRON. 

High. Wide. Per doz. 

. 3^g in., 1% in., $0.50 



26 FLETCHER S LABORATORY APPARATUS. 



FLETCHER S 

GAS COOKING AND HEATING APPARATUS 

IFOIR ZDODVTJESTIO TJSIE. 



PATENTED AND MANUFACTURED BY 

THOMAS FLETCHER, F. C S., 

Museum Street, Warrington, England, 

And by BUFFALO DENTAL MANUFACTURING 00,, Buffalo, N, T. 



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 total 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 
1 8 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 ^-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 house 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, all 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 repeatedly denied ly 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 i^-inch pipe, with jet holes I 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. FLETCHER S SOLID FLAME BOILING 
BURNERS 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. 

No. 47. Large size for large 
pans, &c. Price, $2.00. 

COOKING BURNER " "~ 

Engraving one-third full size. 




28 



FLETCHER S LABORATORY APPARATUS. 



No. 47a. SOLID FLAME BOILING BURNER. A small 

size of No. 47, and of the same power as 
No. 51. Made from improved patterns. 

PRICE. 
No. 47^7, $2.00 

No. 48. Small size. For general use. 
PRICE. 

No. 48, $1.75. 

No. 48a. New ornamental pattern for 
the breakfast table, &c. Same power as 
No. 48. 

PRICE. 
No. 48<r, $2.00. 




S ATENT 
COOKING 

BURNER 

No. 48. Engraved quarter size. 




No. 48a. 




No. jr. 



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 taps, 1.75 

For table use, and also where the gas 

supply is deficient, both these burners, Nos. 

48^ and 51, are better with the new SHORT 

FLAME CAP. Price the same. 



No. i R. SOLID FLAME 

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. 



RADIAL BURNERS. This 



No. 



PRICE. 
R, Radial Burner, 



$2.00 




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 clone 
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 laboratory 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. 





No. 200. PRICES. No. 201. 

Without Tripod. With Tripod. 

i. size, gas consumption 2 ft. per hour, . . . No. 200, $0.75 No. 201, $1.00 
\. " " 3^ " "... " i. oo 1.25 

i. " " 7 " . . . .; 1.25 1.50 



No. 93b. BOILING BURNERS, ON TRAYS. 






teSlllllllllliilllllli. li iliMlii il.lhi.mliil iiliiililllllllllliinlllll ll,,|...,9 . D..M.CO-lvi i .!i i l liii l; Hi.!r ihi .ihlmi... , i. I H Tv^T^ 

Three Fletcher s solid-flame burners on fretwork stand, in tray, with taps to each, 
and tap to supply oven at the side. PRICE. No. 93/1, complete, $ 





INSTANTANEOUS WATER 
H E A T E R Fo R L A v ATO R Y AND 
SCULLERY Price, $10.00. 



INSTANTANEOUS WATER 
HEATER FOR LAVATORY. Price, 
complete, with Burner as engraved, $5.00. 



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 
nicety not obtained by a gas cock, and we find 
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. 

PRICE. 
Smoothing Iron Heater, . . $2.00 




BOOK FINISHERS GAS 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 other 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, $12.00 



THE SNOW GAS BLOW-PIPE. 

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 
^3 the air pipe by means of the trigger 
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. 



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 Denial Laboratory use in 
heating water, "waxing up" a base 
| plate, vulcanizing, and in fact for gene 
ral heating purposes. 
It is used quite extensively by druggists for evaporating, heat-, 

ing, etc., and will be found equally good for family use in the 

nursery or sick room, where a small amount of heat is required. 

removed, as shown in the cut. 





The spider can be 



PRICES. 



Gas Laboratory Lamp, . 

Gas Laboratory Lamp, with Spider, 



$0-75 
i.oo 




BUNS EN 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, 



$1.50 



PRICES FOR ORDINARY MOUTH BLOW-PIPES (Brass), 



9-inch, plain, each, 

10 " " " 

11 " " " 

12 " 



$0.15 

.20 
23 

.28 



PRICES FOR INDIA RUBBER TUBING. 



Int. Diam. 1 A inch, 



$o. 10 per 
.14 
.18 

.20 

23 

.28 

.11 

50 



foot. 



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, 



INDEX. 



6, 29 
n 

. 15 
26 



A. 

Argand Bunsen, Nos. 200 and 201, . 

Automaton Blowpipes, A, B, & (J. 

Alcohol Blowpipe Lamps, ..... . 

Assay Crucibles, clay, ........ 

B. 
Bath Heater, _ ........ ... 

Blowpipe, Snow s, .......... 

Blowpipe Jet Tips, ......... 

Blowpipe Lamps, alcohol, ....... 

Blowpipe Lamps, tallow ........ 

Blowpipe Furnace Fletcher-Plattner, . . 
Blowpipes, Mouth ........ 1 

Blowpipes, Chemical, ......... 

Blowpipes, Hot Blast, ........ 

Blowpipes, Hot Blast, for Mouth, . . . . 

Blowpipes, Hand, .......... 

Blowpipes, Automaton, ........ 

Blowpipes, Herapath, ........ 

Blowpipes, No. 8a, for melting arrangement, 
Blowpipes, Bra/ing, No. 8<r, ...... 

Blowpipes, Special Chemical, ...... 

Blowers, Hand, ........... 

Blowers, Foot, ........... 

Blowers, Suspended, ........ 

Bra/ing Blowpipes, ......... 

Boiling Burners, No. 47, ....... 

Boiling Burners, Nos. 47^, 48, 48^, 51, . . 
Boiling Burners on Tiays, ....... 

Book Finishers Gas Stove, ... ... 
Bunsen Burners, .......... 

Bunsen Burners, Argand, ....... 

Bunsen Burner, Blast, No. 5, ...... 

Blast Bunsen, No. 5 .......... 

Blast Gas Furnace, Injector, No. 41, ... 

C. 

Carbon Blocks, molded, ........ 

Carbon Crucibles, for melting arrangement, . 
Chemical Blowpipes, hot blast, Nos. 31, 31 b, 
Chemical Blowpipes Special, No. 32, . . . 
Capsules, Clay ............ 

Crucible Furnace, No. 15, ....... 

Crucible Furnace, No. 16, ....... 

Crucible Tongs, ........... 

Crucible Furnace, No. 40 ........ 

Crucible Furnace, No. 40^, improved burner, 
Crucible Furnace, No. 40/>, for refined petro 

leum, ......... . . 

Crucibles, Clay, assay, ........ 

Crucibles, Clay, ........... 

Combined Crucible and Muffle Furnace, gas, 
< lombined Crucible and Muffle Furnace, petro 

leum, ............. 

Cylinders, Plumbago ........ 17 



Domes, Plumbago, 
I (raft Furnaces, 



Evaporating Burners, 



D. 



E. 



Foot Blowers, Nos. 9 and 9, .... 

Foot Blowers, Suspended 

Fletcher Blowpipe Mouth-piece, . 
Fletcher Planner Blowpipe Fuinace, 
Fletcher s Universal Furnace, . . . 
Forge, gas or petroleum 

Furnace, Crucible, No. 15, .... 

Furnace, Crucible, small. No. 16, . . 
Furnace Ladle, No. 14, . . 

Furnace, Muffle 

Furnace, Draft 

Furnace, Blast 

Furnace, Combined Crucible and Muffle, 

Inmnn- I |iiiiliinnH riiriM - illl l i"" " 1 



F. 

Furnace, Crucible, No. 40^. improved burner, 24 
Furnace, Crucible, No. 40/1, for refined petro 
leum, 25 

Furnace, Tube, 6 



G. 



and 



Gas Supply Taps, Nos. in 

Gas or Petroleum Forge, 

Gas Furnace, without blast 

Gas Cooking and Heating Apparatus, . 

Gas Furnaces, with blast, 

Gasoline Generator and Furnace, No. 4or, 
Gasoline Generator and Furnace, No. 44, . 

H. 

Hot Air Bath, 

Hot Blast Blowpipes, Nos. la, za, yi, . 
Hot Blast Mouth Blowpipes, Nos. 30, 30^, 30 
Hot Blast Chemical Blowpipes, No. 31, 
Hard Rubber Mouth-piece for Blowpipes, . 

Hand Blowpipes, Automaton, 

Hand Blowpipes, Brazing 

Hand Blower 15 

Herapath Blowpipe, No. 4, -13 

Horizontal Solid Flame Burner, No. 45, .. 5 

I. 

Instantaneous Water Heaters, Nos. 147, 247, 7 

India Rubber Tubing, 9-31 

Ingot Moulds 13 

Injector Gas Furnace, 20 

Injector Petroleum Furnace, 21 



5 



J. 



Jet Tips, for blowpipes, 

L. 

Low Temperature Burner, No. 7, 
Laboratory Furnace, No. n, . 
Laboratory Gas Burner, small Bunsen, . 
Ladle Furnace, No. 14, 

M. 

Molded Carbon Blocks 

Mouth Blowpipes, plain, 

Mouth Blowpipes, hot blast, .... 

Major Ross Blowpipe Mouth-piece, 

Melting Arrangement, No. 8 

M citing Arrangement, No. 8</, 

Muffle Furnaces, 

Muffle and Crucible Furnaces, combined, 
Muffles, Plumbago 

P. 

Plate Moulds 

Petroleum or Gas Forges, 

Plumbago ( Cylinders, 

Plumbago Domes 

Plumbago Muffles, 

Plumbago Crucibles 

Perfected Injector Gas Furnace, . . . 
Perfected Injector, Petroleum, . . . 



Radial Burners, 



R. 



S. 



Solid Flame Burners, Nos. 46, 4(1/1 and 47, 
Soldering Iron Heater, No. 18, . . . 
Suspended Fool Blowers, . 
Special Chemical Blowpipes, No. ;.. 

Smoothing Iron Heaters 

Snow Gas Blowpipe, . . 

T. 

Tube Furnace 

Tallow Blowpipe Lamps, 

Taps for (las supply, ...... 

W. 



19 

21, 22 

9 

13 

4 

17, 18 
. 18 

iQ- 

24 
20 

21 



OF CHEMICAL ATSTD PHYSICAL APPARATUS. 193 

Fire Clay, Fine Per lb., $ .10 

Fluor Spar, Cryst " .15 

Pow d " .10 U 

Formyle, Chloride Per oz., .20 

Bromide " 2.50 

Iodide Per dr., .50 

Fusible Metal .Per oz., .40 

Fusel Oil, Pure Per lb.. 1.00 

Fruit Essences, Artificial; all varieties kept. . 

[.] 
G. 

Galena, Fine, for Blow-pipe work " .30" 

Galls, Ground Per oz., .05 

Tincture of " .15 

Glass of Borax .25 

Glucina, Carbonate Per dr., 1.50 

Hydrate " 1.50 

Glucose, in lumps Per lb., . IE 

Glycerine, Puriss. ; water free, T . " .7? 

Best American ; very fine ; free from lead 

and all earthy matters " .50 

Gum, Arabic, picks " .75 

sorts .50 

Benzoin Per oz., 10 

Tragacanth " .10 

Gums, of all kinds, at lowest market rates. 

Gold, Chloride, Sol 2.00 

Ditto, Dry, Pure, 15 gr, bottles 25.00 

Oxide 35.00 

" Metallic Leaf, xx Deep, Per book, .75 

Graphite, Pow d. Pure T Per lb.. 1.00 

In Lump " .25 

Gutta Percha. Pure. In Sticks Per oz., 1.00 

Gypsum, Pulv Per lb., .10 

Gelatine, Pure Per oz., . 15 

H. 

Haematoxyline Per. gr., .08 



194 E. B. BENJAMINS DESCRIPTIVE CATALOGUE 

I. 

Indigo, Pure, Best Bengal Per oz., $ .15 

" Sulphate Sol " a IQ 

Iodine, Pure, Resublimed, T " .50 

Crude " 1 49 

Iridium, Mett Per gram. 2.50 

Chloride , " 1.80 

Iridosmium " .50 

Indium, Mett " 6.50 

Iron, by Hydrogen, Pure Per oz., .15 

" Pulv., Sub., Pure " .10 

- Wire, Pure " .20 

." Acetate " ."40 

" Ammoniated " .10 

" Limatura, Alcoholized " .05 

" Arseniate " .40 

" Bromide " .35 

" Carbonate, Precc. T Per lb., .60, " .10 

" " Proto, Precc " .15 

" Chloride, Sesqui, Sol Per lb.. -BO, " .06 

* < " Fine Cryst., C. P. . " $.100, " .10 

" Proto " 6 .75, " .10 

" Chromate, Native Per lb., .25 

" Citrate, U. S. P Per oz., .15 

" " and Ammonia " .15 

" " and Manganese " .20 

" and Magnesia " .20 

<( Ferrocyanide, Pure " .12 

Com " .1C 

Filings Per lb., .10 

" Iodide, C. P. . Per oz., .50 

Com " -40 

" Lactate, Pure " .20 

" Oxide, Hydrated Peroxide Per lb., 1.50 

Proto Per oz., .10 

" Red Oxide, Precc Per lb., 1.2" 

" Black Oxide, C. P Per oz., .lo 

" Com l.. ..Perlb., .75, " .10 



OF CHEMICAL AND PHYSICAL APPARATUS. 195 

Iron, Nitrate, Per. Sol Per lb., $ .50, Per oz., $ . 10 

" Phosphate, Proto " .60, " .10 

Per " 1.00 ". .15 

" Pyrophosphate, in Plates " .15 

" Sulphate, C. P., Cryst Per lb., .09 

" Dried "" , .18 

" and Ammonia, C. P " .20 

" " and Potassa Per lb., ,80, Per oz., .10 

" Sub., Pure " .15 

" Sulphide, Fused, Opt Per lb., .20 

Gran " .30 

" Tannate, Pure Per oz., .40 

" Tartrate " .20 

" " and Ammonia " .15 

Tersulphate, Sol., Opt Per lb., .60 

" " and Potassa Per oz., .15 

^ Tungstate Per lb., .40 

" Valerianate Per oz., . GO 

J. 

Jalapine, Per oz., 2.00 

K. 

Kermes, Mineral Per lb., 2.50 

Kaolin, Pure, White " .15 

Kreatine Per gram. 5. 00 

L. 

Lead, Acetate, C. P., T Per lb., .75 

Conrl. .50 

" Tribasic Per oz., .40 

Sub., Sol Per lb., .40 

" Bichromate, Pure Per oz., .25 

" Garb., Neutral .Per lb., .35 

" " Native. See Minerals. 

" Chloride, C. P Per oz., .10 

" Chromate, for Organic Analysis " .15 

" Hyposulphite " .10 

" Iodide.. (( AG 



190 E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 

Lead, Mett, C. P., in drops, for Assay purposes Per lb., $ .75 

" Nitrate, Pure < .70 

" Oxide, Red 1.00 

" Proto, Pure " .25 

Peroz.. .10 

" Phosphate, Pure " .30 

" Sulphate, C. P Per lb., .50 

" Tartrate, Pure Per oz., .20 

" Tannate . .25 

Lithia, Carbonate, C. P 1.50 

Citrate 1.25 

Sulphate... 1.50 

Lime* Chloride, Com l Per lb., .20 

Lithium,, " C. P Per oz., 1.50 

" Bromide Per oz., 1.20 

" Iodide " 1.25 

Litmus. In Cubes, Pure " .10 

Paper, Blue and Red Per sheet .05 

Logwood. In Chips Per lb., .10 

" Extract Per oz., . 10 

In Billets , Per billet, ,50 

Lupiline Per oz., ,10 

Ly copodium " .10 

M, 

Magnesia,, Caustic. C. P. T Per lb., fe.OO 

" Carbonate, Precc Per oz., . 15 

" Native. See Minerals. 

Citrate, Pure Per lb., .20 

" Nitrate Per oz., .20 

" Hypophosphite " .75 

" Phosphate " .40 

Sulphate, C. P Per lb., .30 

" Valerianate Per dr., .30 

" Sulphate, Com l Per lb., . 10 

" Sulphite Per oz., . 10 

Magnesium, Ribbon Per foot, .05, " 3. 75 

" Wire " .05, " 

" Bromide " 1.00 



tt 

i 



UF CHEMICAL AND PHYSICAL APPARATUS. 19? 

Magnesium, Iodide Peroz.,$ J.OO 

Chloride, C. P Per lb., .30 

Manganese, Mett Per gram. 1. 00 

" Acetate Per oz., .30 

" Bromide " 1.25 

" Carbonate. T " .35 

" Citrate " .25 

Per Oxide; high test; Pulv Per lb., .10 

" Chloride, Pure Per oz. -20 

" Hypophosphite Per oz. , . 65 

Iodide 1.10 

" Phosphate " .50 

" Nitrate " .35 

Sulphate, C. P., Cryst Per lb., $2.00 " . 20 

Mannite Per dr., . 30 

Meconin Per dr., 2.50 

Morphia, Pure Alkaloid Price, per oz., 9.00 

Bimeconate " " 12.00 

" Chloride " " 10. 25 

" Nitrate " 12.00 

Sulphate " 7.00 

Valerianate " " 8.50 

Mosaic, Gold Per oz., .35 

Mercury, Redistilled, Best, Per lb., 1.25 

" " in quantities, special price. 

Acetate Per oz., .50 

f Bromide " .50 

Chloride, Proto .30 

" " Per Am " .15 

" Cyandide, T " .50 

Chloride, C. P. T., Per " .35 

" Iodide, Proto " .55 

" " " Deuto " .50 

" Oxide, Black " .50 

" Proto, Red ; .25 

" " Yellow .35 

" Sulphide, Black , " .20 

" Red .25 

" Sulphocyaiude " .35 



198 E. B. BE^-JAMIK S DESCRIPTIVE CATALOGUE 

Mercury, Sulphate, Basic Per oz., | .20 

" " Neutral " .35 

" Nitrate, Proto, T .30 

" Per, T .45 

Meihyline Per lb., 1.00 

Minium, Opt .15 

Microcosmic Salt, Pure Per lb., $1.50, Per oz., .15 

Molybdenum, Mett Per gram. .50 

" Oxide, C. P Per oz., .55 

Sulphide .60 

Menisperin, Pure.. ... 2.00 



N. 

Naptha, Refined Per lb., .55 

" Wood *< .75 

Naphaline, Pure, T Per lb., $1.50, Per oz., .20 

Narceia Per dr., 7.50 

Narcotine, C. P Per oz., 2.50 

Nessler s Solution, for delicate Ammonia reactions, 

Per fluid oz., .25 

Nickel, Mett* Cubes Per oz., .40 

Garb, Pure .75 

Chloride, T "... .75 

Nitrate, C. P. T .80 

Oxalate, " 1.00 

Oxide 1.00 

" Sulphate, C. P " .50 

" " and Ammonia " .75 

Nicotine.. ,., 16.00 

Nitro^ enzol . Per oz., .15 



0. 

Ores and Minerals. See Minerals and Fossils. 

Osmium, Mett Per gram. 3.50 

Olive Oil, True Perpt., .60 

Oils, Essential ; all varieties kept; True 

" Kapeseed Perpt., .50 



OF CHEMICAL AND PHYSICAL APPARATUS. 199 
P. 

Palladium, Mett Per gram. 3.00 

< ! Chloride, 1 dr. bottles dr., 7.00 

Parafine, Opt., Pearl Per lb., .40 

Phosphorus. In Sticks Per lb., $1.50. Per oz., .15 

" Amorphous " .30 

Chloride Per dr., .75 

Pancreatine Per oz. . 75 

Picrotoxiue, Pure Per oz.,12.0U 

Pyroxilic Spirit^ Pure Per qt., .50 

Pipcrine Per oz., 1.30 

Pepsine, Best, Refined Per oz., 1.25 

Phloridizine " 3.50 

Platinum, Chloride, Sol Per oz., .75 ^ 

" Dry, T " 7.50 

and Sodium 7.00 

" Sponge Per gr., .03 

" " for Hydroplatinic TJamp Each, .25- - 

" Wire Per gr., .2 

Sheet .2i 

Plate " .03 

Potassa, Acetate, Pure Per oz., . 10 

Antimoniate " .30 

" Arseniate " .10 

" Arsenite " .10 

Bicarbonate, C. P. T Per lb., .50 

Com l " .10 

Bichromate " .25 

" Puriss Per lb. $1.00, Per oz., .10 

" Binoxalate .20 

" Boro-Tartrate. T " .15 

" Bisulphate, C. P. T Per lb., .CO 

" Bitartrate, Cryst " .50 

" " Puriss., T " 1.00 

" " Pow d " .40 

" Bromide Per oz., . 15 

" Carbonate, C. P., Sice Per lb., 2.00 

Com Perlb., .20 



#00 E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 

^ Carbonate and Garb. Soda, 0. P Per lb., $ 2.00 

Caustic, Fused, White, C. P. T " .60 

" " Brown " .50 

" C. P., Am " .75, 

" " Dep. Alcohol, Puriss " 2.00 

Chlorate, Cryst, Best " .40 

" Puriss " 1.00 

Chromate, Puriss Per lb., $1.50 . Per oz., . 15 

" Com Per lb., .60 

Citrate Per oz., .15 

Cyanide, Fused, Alb., Opt .15 

" In 10 lb. cans Per lb., .80 

" C. P. T., Per lb., Per oz., .75 

Chloride, C. P., T ,. . . " " .10 

Ferrocyanide, Pure . . T " " .15 

Ferridcyanide " . n " " .25 

Fluoride, C. P., T " .75 

Hypochlorate " -40 

Hypophosphite " .25 

Iodide, Pure Cryst(variable price) " . 30 

" Fused Puriss, T .75 



. . 



f U 

lodate " 

Hypermanganate " .20 

" Manganate " " 15 

Lactate 1-00 

Liquor Per lb.,.40 .10 

Nitrate Cryst Per lb., -20 

C. P., Gran " - 50 

" Phosphate, Pure " 2.50 

Nitrite, Pure, T in sticks Per oz., .30 

Oxalate " -20 

Bin -10 

1 Pictrate, very scarce " 2.50 

Silicate, Sol., C. P., T .05 

" Dry " " Per. lb. -60 

Sulphate, Cryst, Pure Per lb., .50 

Pulv " -16 

" Sulphite, Cryst Per oz., .45 

Sulphide, Fused C. P " .20 



<ji> CHEMICAL AND PHYSICAL APPARATUS. 201 

Potassa, Tartrate, Cryst. C. P. T Per oz., $ .15 

Potassium. In ^oz. vials Per oz., $3.50, Per oz., 1.00 

Sulphocyanide... C. P. T Per oz., .40 

Propylamin, Pure Per oz., 1.50 

" Chloride Per oz., 6.25 

Proteine Per oz., 

Prussian Blue " -10 

Q- 

Quinia, Pure Per oz. 4.25 

Acetate Per oz., 4.25 

Arseniate < 6.0U 

Chloride Per oz., 3.50 

Sulphate Per oz.. 2.35 

R. 

Rare Resinoids Podophyllm, Leptandrin, Cimicifu- 
gin, Macrotin, Alnuine, Ampelopsiue, Apocynin, 
Asclepidin, Baptism, Barosmin, Caulophyll, Ce- 
rasine, Chelouine, Colocynthine, Cornyie, Coryda- 
lia, Cypripedine, Digitalm, Dioscorein, Eryngiue, 
Euonymine, Eupatoidin, Eupatoriiie, Eupurpnrin, 
Eragerin, Gelseminine, Geraniiie, Hamamelin, He- 
lonin, Humulin, Hydrastiiie, Hydrastin, Hydrastia 
Mur., Hydrastia Snip., Hyoscyamine, Irisin, Ja- 
lapin, Juglandin, Lobelin, Menispermin, Myricin, 
Pauduratin, Phytolacin, Populinj Prunine, Rhusin, 
Rumicin, Sanguinarina, Sanguiiiarina Sulph.. Scu- 
telarine, Senecioniue, Stillinginc, Trillin, Veratrin, 
Verbenine, Yiburnin, Xaiithoxyliii. 

Rheine, Tilden s Per oz., 4.25 

Rhodium^ Mett Per gram. 5.00 

Rubidium, Chloride " .50 

Rhigoline, Inoderous; Sp. Grav. 620 Per botl., .75 

Ruthenium, Mett Per gram. 6.50 

S. 

Salicine " Per oz., .50 

Sanguine, Best Fr Per lb., 1.25 



202 E. B. BENJAMINS DESCRIPTIVE CATALOGUE. 

Selenium Per dr., $ .75 

Silicium Per gram. 4.00 

Santonin, Pure, Alkaloid Per oz., .75 

Silica, Fine ground Per lb., .15 

Silver, Mett Foil Per oz., 1.75 

Gran., Pure " 2.50 

Leaf, " Per book, .25 

" Acetate, Pure Per oz., 3.50 

" Bromide " 2.50 

Chloride " 1.60 

" Cyanide. Sol " 2.50 

" Carbonate Per oz.3.60 

" Iodide, Pure Per oz., 2.50 

Nitrate, C. P., Cryst < 1.00 

Oxide " 1.75 

Sulphate, Pure " 3.00 

Soda, Acetate Per lb., 1.00 

" Arseniate Per oz., .15 

Arsenite " .10 

Bicarbonate, Eng, Best Per lb., .07 

" C. P . . T " .60 

" Bromide Per oz., .15 

Bromide, C. P Per lb., 1.50 

" Biborate, Puriss " 1.00 

Bisulphate, Pure " -60 

Bisulphite, C. P I-* 

Carbonate, Cryst., C. P., T -40 

" Dried, Puriss., T " - 90 

Cryst, Com " - 05 

Caustic, White, by Lime, Fused " - 90 

Alcohol, Dep., C. P., T 8.00 

" by Sodium Per oz., !*> 

Chlorate, Cryst . 

Chloride, Sol., U. S. P Per bottle -2 

Dried, C. P.. T Per lb., -35 

Citrate, Pure Per oz,, - 25 

Fluoride Per oz., -75 

Iodide, Pure, Cryst " -60 

Hyposulphite, C. P., T Per lb., .70 

" Lime, Gran., C. P. T " 1.00 

Pow d C P. T < 1.25 



OF CHEMICAL AXD PHYSICAL APPARATUS. 203 

Soda, Hyposulphite, Am., Opt Per lb., $ .09 

" Hypermaiiganate, C. P Per oz., .10 

Hydrosulphite. Cryst T Per lb., .75 

" Hypophosphite , Per oz., .75 

lodate " 2.0C 

Lactate, Sol., Cone " .60 

Phosphate, Cryst, C. P . T Per lb., .65 

Pyrophosphate " 1.30 

Nitrate, Cryst, C. P , .35 

Eefined " .20 

" Pyrophosphate Per oz., .10 

" Sulphite Per lb., .75 

." Santonate . . Per oz., 1.50 

" Sulphocarbolate " .30 

" Silicate, Sol., 3 lb. bottles Each, .90 

Sulphate, Com l Per lb., .04 

Pure " -30 

" Tungstate ^ Per oz., .15 

Sodium, Mett " .50 

Bromide.. . .C. P. T " .10 

" Nitrbprnsside " 2.00 

" Sulphide, Fused Per lb., .80 

" " Cryst < .75 

C. P Peroz., .10 

Solanine Per dram. 5.00 

Spermaceti, Pure Per lb., -35 

Spirits, Ammonia, IT. S. P " .35 

Strontium, Mett ;vr gr. .60 

Strontia, Carbonate, Precc Per oz. ? -10 

" Caustic .30 

Chloride, C. P., T Per lb., $1.50 " - 10 

" Nitratej Dried Per lb., -75 

Cryst .C.P T " 1.25 

" Sulphate. See Minerals. 

C. P.T ....Perlb., -75 

Strontianite. 

Strychnia, Cryst., Pure Per oz.,3.00 

" Acetate 3.50 

" Chloride Per dr., .75 



204 E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 

Sulphur, Flos Per lb., $ .Qg 

Roll . . . .06 

" Chloride Per oz., .25 

" Iodide " .45 

" Precc., Pure Per lb., .25 



T. 

Tellurium, Mett f Per gram, 1.50 

Thebaine, Pure Per gr., .50 

Theine, Pure, Alkaloid Per dr., 5.00 

Thallium Per gram. .50 

Chloride .50 

Thymol Per oz., 1.50 

Test Paper, Litmus, Blue Per sheet, .05, Per quire, .80 

Red " .05, " .80 

Neutral " .05, .80 

BrazilWood " .05, .80 

" Georgina " .06, " 1.00 

" Guaicum " .06, " 1.25 

" Turmeric " .05, " .80 

" Sulphate, Manganese... " .05, " .80 

" Schonbein s Ozone Per pack, .10 

" Hydrosulphuric Acid. .Per sheet, .05, Per quire, .75 

Tin, Mett.,. in bars Per lb., .60 

" Pure, in sticks " 2.50 

" Foil, Tissue 1,^5 

" Mett., Granulated " 1.25 

" Chloride, Pure, proto " .75 

" " " Liquid, non Aqueous Per oz., .50 

Crystals, Opt, T Per lb., l.uO 

" " Com l " .50 

Oxide, Pure, T " 2.00 

" Bisulphide Per oz., .25 

Sulphide, Proto " .20 

Tungsten, Mett Per gram. .50 

" Oxide .45 

Turmeric, Pow d Per oz., .05 

Toluol. 



OF CHEMICAL AND PHYSICAL APPAEATUS. 205 

u. 

Uranium, Acetate, Pure, 0. P Per oa. $ 1.00 

Chloride " " i.oo 

Nitrate " 1.00 

Sulphate " 1 .00 

Oxide Per oz., 1.00 

Urea, Oryst., Pure " 1.25 

" Nitrate " 1.00 

V. 

Termillion hue. " .10 

Z. 

Zinc, Mett Per Ib. .20 

" Puriss, Gran l, T Per Ib., .50 

" Acetate, Cryst, C. P Per Ib., $1.00, Per oz., .10 

" Gran l, Com l Per Ib,, .25 

" C. P., Arsenic, Free " .60 L- 

" Bromide Per oz., .45 

" Reduced, C. P., Puriss Per Ib., 1.25 

" Chloride, Dry, Opt Per oz., .10 

" Carbonate, Pure, Precc Per Ib., ..35, Per oz., .05 

" Cyanide " .30 

" Ferrocyanide " .30 

" Hypophosphite " 1.00 

" Iodide .60 

" Lactate " .50 

" Nitrate, Pure .30 

" Oxide, Precc Per Ib., 1.25 

" Phosphate Per oz., .30 

" Phosphide Per oz., 1.30 

" Sulphate, Com l Per Ib., .10 

Puriss., T .30 

" Valerianate Per oz., .60 

Zirconium, Oxide, Pure Per dr.. .50 

Zircons, Native. See Minerals. 



AND 



GEOLOGICAL DEPARTMENTS. 



DURING 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 2| x 2| inches. This series will be 
found to be very suitable for academies, seminaries, the smaller col 
leges, etc. $50.00 

3474. A Collection similar to the above, but more complete, 
containing 300 specimens, 2| x 2^ inches, neatly and securely packed 
in wooden boxes; each mineral being numbered, with catalogue 01 
same. This collection is put up and selected by a practical and 
experienced mineralogist, and will be found quite complete. 

Packed, $75.00 



OF CHEMICAL AND PHYSICAL APPARATUS. 



20? 



COLLECTION OF THE PRINCIPAL ORES OF THE METALS. 



Lead Galena. * 

Manganese Pyrolusite. 
Mercury Cinnabar. 
Molybdenum Molybdanite. 
Nickel Nicoliferous Pyrites. 
Osmium Iridosmine. 
Platinum Native Grains. 
Silver Horn Silver, 
Tin Stream Tin, Sulph. Tin. 
Titanium Sphene, Rutile. 
Tungsten Tungstate Iron. 
Yttria Yttrotantalite. 
Zirconium Zircons. 
Zinc Calamine, Blende. 



Aluminum Cryolite, Alunite, 

Kaolin. 

Arsenic Arsenical Iron. 
Bismuth Carbonate Bismuth, 

Native Mett. 

Chromium Chromate of Iron 
Cobalt Zaffre. 
ColumUum Columbite. 
Copper Sulphide, Malachite, 

Native. 

Glucinum Beryl. 
Iron Magnetic Oxide Haematite. 
Lithium Spodumene and Le- 

pidolite. 

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. $7.00 

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 

3479. Ditto, ditto, ditto, with Plattncr s Blow-pipe Lamp in 
stead of Spirit Lamp. $3.00 extra. 



208 

3480. A Collection of minerals of most excellent sizi-, and of a 

character ^uitable for placing on the shelves of the College Cabinet, 
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, Kyaiiite, Tourmaline, Zinc Ores, etc., are really deserving of 
very much higher prices. The greater part of this collection is 
from American localities. 

Agate, Chalcedony, Felspar, 

Allanite, Chalcopyrites, 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, 

Amygdaloid, Copper, Native, with Graphite, Massive, 

Alunite, Epidote, Cryst, 

Actinolite, Cryolite, Gypsum, Massive, 

Anhydrite, " with Spathic Iron, Cryst., 

Anthropolite, Copper, Native, with Halite, 

Barite, Epidote and Ortho- Heavy Spar, 

Bismuth, Mett. clase, " with Iron 

Beryl, Chondrodite in Cal- Pyrites, etc., 

Blende, cite, Hematite, 

Brucite, Chlorophane, Heulandite, 

Calamine, Chalcocite, Hornblende, Massive, 

Calcite, Ferruginous, Dolomite, Cryst., 

" Cryst., Dioptase, Hornstone, 

" Massive, Diallage, Hypersthene, 

" Granular, Datolite, Hyacinth, 

Cassiterite, Emery, Idocrase, 

Celestine, Epidote, Ilmenite, 

Cerite, Ekelbergite, Iron Specular, 



OF OHBM1CAL AND PHYSICAL APPARATUS. 



209 



Iron, Magnetic, 

" Pyrites, , 
Jasper, 
Jaspery Trap, 
Jeffersonite, 
Kaolin ite, 
Kyanite, 
Labrador! te, 
Lepidolite, 
Lignite, 
Limonite, 
Magnetite Cryst., 

Massive, 
Malachite, 
Marmolite, 
Margarodite, 
Mica, with green 

Tourmaline. 
Mispickle. 
Molybdenite, 
Moscovite, 
Natron, 
Obsidian, 
Olivine, 
< )pal, Common, 

- Wood, 

Fine, 
Orthoclase, 
Orpiment, 
Pargasite, 

3481. A Set of Minerals,, for illustrating the various shades 
Assumed by minerals when generally in crystaline state : 



Porphyry, 


Sulphur, 


Pearl. Spar, 


" with Celestine> 


Pectolite, 


Strontianite, 


Petalite, 


Sphene, 


Plumbago, 


Spinels, pink and 


Prase, 


Chondrodite, 


Prehnite, 


Pargasite, etc., 


Pyrites, Iron, 


Spinels, Black, 


" Copper, 


Spathic, Iron, 


" Magnetic, 


Steatite, 


Pyrolusite, 


Syenite, 


Pyoxene, 


Sunstone, 


Pyrrhotite, 


Staurotide, 


Quartz, Crystal, 


Tabular Spar ? 


" Rose, 


Talc, 


Smoky, 


Titaniferous, Iron, 


" G-eodes, 


Topaz, 


Realgar, 


Tourmaline, Massive, 


Rock Crystal, 


" Oryst., 


Scapolite, 


" Green, 


Stibnite, 


Tremolite, 


Selenite, 


Wad, 


Seyberite, 


Willemite, 


Schefeldite, 


Witherite, 


Smoky Quartz, 


Wolframite, 


Sepentine, 


Wood, Petrified.. 


Silicified Wood, 


" Opal, 


Sillicious Sinter, 


Zinc, Blende, 


Stilbite, 


Zincite, 


Spodumene, 


Zircons./ 



1. Carrara Marble, 

2. Calcites, 

3. Quartz, 

4. Talc, - 

5. Obsidian, 

6. Pyroxene 

7. Aznrite, 

8. Fluor Spar, 



White. 



9. Dioptase, 
" 10. Actinolite, 
Gray. 11. Sulphur, Native, 

12. Common Opal, 
Black. 13. Jasper, 

14. Lepidolite, 

15. Agatized Wood 

1C. Mountain " " 

Complete, in case, $10.00 



Blue, 



Green, 

it 

Yellow* 
Red, 
Brown* 



210 



E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 



34:82. 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. Very complete. $25.00 



Carb, Soda, 
Borax, 
Micro, Salt, 
Bisulph., Potassa, 
Boracic Acid, 
Huor Spar, 
Nitrate Cobalt, 
Oxalate Nickel. 
Oxide Copper, 
Chloride, Silver, 
Lead, 
Iron, 
Tin, 

Bone- Ash, 
Chloride, Potassium, 
Bromide, " 

Iodide, " 

Chloride, Sodium, 

41 Ammonium, 
iSubchl de, Mercury, 
Protochloride, " 
Antimony, 
Arsenic, 
Bismuth, 
Cadmium, 
Silver, 
Alloy, Mercury 

Tin, 



Alloy, Lead and Zinc, Molybdic Acid, 

" Tin and Copper, Oxide, Silver, 
Allov, Zinc and Cad- Binoxide, Tin, 



Tungstic Acid, 
Sesquichloride 

mum, 

Oxide, Zinc, 
Chloride, Copper, 
Arsenite, " 
Petalite, . 
Haematite, 
Entile, 
Pyrolusite, 
Lepidolite, 
Sb., Apatite, 

Franklinite, 
Arsenic, Pitchblende, 
and Antimony, Chromic Iron, 
Onofrite, or Clans- Cerusite, 



mium, 
Zinc, 

Rock, Crystal, 
Gypsum, 
Calc., Spar, 
Strontianite 
Wither! te, 
Magnesite, 
Mica, 
Felspar, 
Albite, 
Sulphides, 

and Pb. 
Sulphides, 



Ura- 



Cu., 



thalite, 

Chlorate, Potassa, 
Alumina, 
Sulphate, Copper, 
Nitrate, Lead, 
Oxide, Antimony, 
Arsenious Acid, 
and Ox., Bismuth, 
Ox., Cadmium, 



Malachite, 
Gray Antimony, 
Iron Pyrites, 
Copper " 
Mispickel, 
Smaltine. 
Cobaltine, 
Realgar, 
Cinnabar, 



Alloy, Lead and An- Sesquichloride Chro- Copper Nickel, 

tirnony, mium, Molybdenite, 

Alloy, Lead and Bis- Ox., Cobalt, Berthierite, 

muth, Proto-oxide, Mercury, Tetrahedrite. 

3483. A Set for illustrating the various temperatures of fusi- 
feleness of various minerals, according to Elderhorst. In case, $1.00 

4. Actinolite, 



1. Gray Antimony, 

2. Natrolite, 

3. Almandine, or Iron Garnet, 



5. Orthoclase 

6. Broncite. 



OF CHEMICAL AifD 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. Talc. Foliated, 6. Felspar, Cleavable variety, 

2. Kock Salt, 7. Quartz, Transparent " 

3. Calc. Spar, Transparent, 8. Topaz, 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 hare a few superior specimens of that curious variety of 
Quartz Kock, 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 

3488, 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 Eocks, 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, 7. 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. Eutile. 

Complete, in pasteboard case, $10.00 



212 E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 

3491. A Suil 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, etc., 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 
2Jx2J; excellent for completing amateur collections; all picked 
specimens ; at the uniform price of, each, .25 

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. Twenty speci- 
.mens in all. $10.00 

3494. A Suit of Colorado Minerals, including all of the ores 
aud 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 BARE 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 yeiy Rare and Exquisite, as well as wonderful, 
production of oceanic life, called " Venus Flowing Basket," or "Ex- 
plectella Speciosa," found 60 fathoms deep near the Phillipine Islands, 



OF CHEMICAL AND PHYSICAL APPARATUS. 213 

5ind 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 Fossiliferous 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. Each 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, etc. 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 
\vorld 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 
ued at $250 to $300 each. 

Tliis is a rare opportunity for colleges. Price, $3,000 to 6,000 
3501. A Case of German Minerals, beautifully arranged, in 
an elegantly polished wood case, with drawers, containing 200 
minerals, carefully wrapped for transportation, and completely clas 
sified and labeled ; size of specimen averages about 1-^x2 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 SPECIAL PURPOSES 



The marginal figures in small type refer to numbers in regular catalogue. 




3504 



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 oz., 
1 Small Sand Crucible, 
1 Shallow Sand Bath, 2 in., 
1 Small Porcelain Crucible, 

1 Glass Mortar and Pestle, 2 in. 

2 " Stirring Rods, 
1 " Spirit Lamp, 

1 Sir-all Tripod, 

1 Test Glass, with lip, 
4 Test Tubes, 

2 Test Tube Holders, 



3 Test Papers, 1 each color, 
, r )0 Small Filters, cut, 
J Jeweller s Blow-pipe, 
1 Corrugated Funnel, 2 in., 
1 Porcelain Evaporating Dish, 3 in. 
1 Piece Tin Foil, 
1 " Rubber Tube, 

1 Pair Iron Pincettes, 
3 inches Copper Wire, 
3 " Iron 

2 ft. Magnesium Ribbon. 



OF CHEMICAL AND PHYSICAL APPARATUS. 



215 



Acid, Boracic, 
" Benzole, 
" Tartaric, 
Alum, 

Ammonia, Carbonate, 
Chloride, 

Oxalate, 

Antimony, Metallic, 
Sulphide, 
Baryta, Nitrate, 
Borax, 
Camphor, 
Charcoal, 
Cobalt, Chloride, 
Copper, Nitrate, 

" Sulphate, 
Fire Clay, 
Fluor Spar, 
Galena, 



CHEMICALS. 

Galls, Tiuct., 
Gum Arabic, 
Iron Filings, 
" Sulphide, 

u Sulphate, 
Isinglass, 
Lead, Acetate. 

" Oxide, 
Lime, Carbonate, 

" Chloride, 

" Phosphate, 
Litharge, 
Litmus, 

" Paper, Red, Blue, 
" Tincture, 
Logwood, 
Lycopodium, 
Magnesia, Carbonate, 
Magnesium, Sulphate, 



Manganese, Oxide, 
Mercury, Nitrate, 
Pharoah s Serpents,. 
Phosphuretted Oil,. 
Potash, Prussiate, 
Potassa, Bichromate, 
" Carbonate,, 
" Caustic, 
" Chlorate^ 
" Nitrate, 
Potassium, Iodide y 
Silver, Nitrate, 
Soda, Carbonate, 
" Phosphide, 
" Sulphate, 
Strontia, Nitrate, 
Turmeric Paper, 
Zinc, Granulated, 
" Sulphate. 



3505. Set of Apparatus and Chemicals^ according to the 
following list, adapted for use in ordinary schools. Price, $10.00 

APPARATUS. 

1 Alcohol Lamp, 1 Test Tube Holder, 1 Pack. Cut Filters, 

1 Retort Stand, 2 Rings, 1 Pneumatic Trough, ^ Ib. Glass Tube, 
3 Pint Flasks, 1 Small Porcelain Mortar, 3 ft. India Rubber Tube,. 

3 Quart " 2 Small Evap iug Dishes, 1 Glass Funnel, 3 in. 

6 Test Tubes, ass d sizes, 

CHEMICALS. 



1 oz. Acid, Arsenious, 


2 oz. 


Fluor Spar, 


^ oz. Potassium, 


1 


Muriatic, 


1 U 

4 


Iodine, 


1 


Cyanide, 


1 


" Nitric, 


4 


Iron, Sulphate, 


i 


" Iodide, 


1 


" Oxalic, 


4 


Lead, Acetate, 




Silver, Nitrate, 


1 


" Sulphuric, 


4 


Lime, Chloride, 


,2 


Soda, Sulphate, 


4 


Alum, 


lib. 


Manganese, Oxide, 


i 


Sodium, 


4 


Ammonia, 


1 " 


Mercury, 


2 


Strontia r 


4 


" Carbonate, 


1 oz. 


" Chloride 


4 


Sulphur, 


4 


Ammonium, Chl de, 


J- " 


Nut Galls, 


2 


Wax, 


4 


Antimony, 


2 " 


Potash, Prussiate 


6 ft. Iron Wire, 


4 


" Tartrate, 




Yellow, 


3 " Magnesium Wire, 


1 


Baryta, 


I " 


Ditto, ditto, Red, 


1 Piece Copper, 


i 


Bismuth, 


2 " 


Potassa, 


1 " Zinc, 




Borax, 


2 " 


" Bichromate, 


2 Sheets Litmus Paper^ 


1 


Cobalt, Chloride, 


4 " 


" Chlorate, 


2 " Turmeric " 


4 


Copper, Sulphate, 


2 " 


" Nitrate, 


1 Stick Phosphorus- 



3506. Set of Apparatus and Chemicals, the same us the 
foregoing, with the following additions. Price, $15.00 



APPARATUS. 

1 India Rubber Gas-bag, 

1 gal., 
1 Jeweller s Blow-pipe, 



2 Stop-cocks, 

1 Tripod, 

1 Wash Bottle. 



1 Deflagrating Spoon, 
1 Evolution Flask, with 

Funnel and Tubes, 
6 ft. India Rubber Tube, 

3507. Set of Apparatus and Chemicals, following, care 
fully packed in a dovetailed box, with sliding lid. and adequate to 



216 



E. 



DESCRIPTIVE CATALOGUE 



the performance of the exi^eriments in " Steele s Fourteen Weeks m 
Chemistry." Price, $20.00 

APPARATUS. 



1 Alcohol Lamp, 4 oz., 

1 Deflagrating Spoon, 

2 Evaporating Dishes, 

1 Evolution Flask, with Funnel and 

Delivery Tube, 

1 Florence Flask, with Delivery Tube, 
1 Funnel, 3 in., 
1 Jeweller s Blow-pipe, 
1 Small Lead Tray, 



2 oz. Acid, Arsenious, 



1 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 Hydrogen Tones, 
$ Ib. French Glass Tube. 

1 ft. India R r Tube, for connections. 



CHEMICALS. 




2 oz. Fluor Spar, 


oz. Potash, Yellow 


i " Gun Cotton, for 


Prussiate, 


Collodion, 


i " " Red Prussiate, 


i 


Iodine, 


1 " Potassa, Bicarbou e, 


2 


Iron, Sulphate, 


4 " " Chlorate, 


2 


1 " Sulphide, 


1 " " Nitrate, 


4 


Lead, Acetate, 


\- " Potassium, 


] 


Litharge, 


i " " Iodide, 


16 


Manganese, Oxide, 


J, " Silver, Nitrate, 


l 


Mercury, Chloride, 


Sol., 


z 


Nut Galls, Ground, 


J " Sodium, 


i 


Phosphorus, 
< Platinum, Chlor de, 


4 " Sulphur, 
2 ft. Magnesium Ribb u, 


Sol., 


1 Specimen Metal Alu 


2 " Potash, Caustic, 


minum, 


Sticks, 


6 Sheets Filter Paper. 



Oxalic, 
Alum, 
Ammonia, 
Ammouium,ChFde, 
Antimony, Metallic, 
Barium, Chloride, 
Bleaching Powder, 
Bone Black, 
Calcium, Phosph t, 

Pieces, 
i " Carbon, Bisulphide, 

1 " Cobalt, Chloride, 

Solution, 

2 " Copper, Sulphate, 
4 " Ether, Sulphuric, 

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 Bun&eu Burners, 

1 Compound Blow-pipe, plain, 
1 Mouth " 

1 Liebig s Condenser, 

1 Glass Oxygen Flask, 

3 Retorts, each J pt., 
6 Tall Jars, 

2 Receivers, each 2 qts., 

12 * Flasks asso d sizes, 4 to 16 ozs 

4 Finnels, assorted, 
2 Ib. Glass Tul.e, 

1 " < Rods, 

1 Graduate, 4 ozs., 

2 Pouring Glasses, 



1 Woulff s Bottle, 1 qt., 

1 Nest Beakers, 

J " Evaporating Dishes, 

4 doz. Test Tubes, assorted, 

" Thistle " 

4 " Safety <; 

1 Jar, f,>r 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. s 
1 " Platinum Foil, 
1 yd. " Wire, 

4 yds. -g ins Rubber Tube, 

3 Deflagrating Spoons, 
3 Packs Filter Paper. 



Acid, Arsenious, 
" Muriatic, 
" Nitric, 
" Oxalic, 
" Sulphuric, 

Alum, 



CHEMICALS. 

Ammonia, 

" Carbonate, 
Ammonium, Chloride, 
Antimony, 

Tartrate 
Baryta, Nitrate, 



Bismuth, 

Borax, 

Cobalt, Chloride, 

Copper, 

Copper, Sulphate, 

Fluor Spar, 



OF CHEMICAL AND PHYSICAL APPARATUS. 



217 



CHEMICALS. Continued. 



Iodine, 
Iron, 
" Sulphate, 
Lead, Acetate, 
Lime, Chloride, 
Litmus Paper, 
Magnesium, 
Mangane&c, Oxide, 
Mercury, 
" Chloride, 


Nut Galls, 
Phosphorus, 
Potash, 
Potassa, Bichromate, 
" Chlorate, 
" Nitrate, 
Potassium, 
Cyanide, 
" Ferricyanide, 
" Ferrocyauide, 


Potassium, Iodide, 
Silver, Nitrate, 
Soda, Sulphate, 
Sodium, 
Strontia, Nitrate, 
Sulphur, 
Turmeric Paper, 
Wax, 
Zinc. 



3509. Set of Apparatus, to be used in illustrating- Barker s 
Text Book of Inorganic Chemistry, packed in the same manner as 
the last. Price, 1100.00 

1942. i doz. Glass Cylinders, 12 in., 
Fig, 10,^. 103, 

1516. i Saltmouths, assorted, 

2276. i Flasks, | pint, 

12322. Funnels, assorted, 

1540. ^ Woulif s Bottles, ^ pint, 

1538. \ Woultt s Bottles, 2 necks, 

1446. Bell Glasses, 1 pt., 2 qts., 
H gals., 

1453. i Stoppered Bell Jars, quart, 

3262. $ Conical Test Glasses, 

3269. 1 Test Tubes, 5 in., 

3269. 1 " "6 in., 

3364. i U Tubes, 

3265. i < Bulb " 

2331. i < Funnel Tubes, 

2335. J; Safety " Fig. ll,_p. 104, 

1469. Combustion Spoons, 

2907. < Pipettes, 

2402. 1 Hydrogen Generator, 

239"). 1 Sulphuretted " " 

2203. 1 Eudiometer, straight tube, 

2204. 1 " Ure s, 

2189. 1 Diffusion Apparatus, Fig.3j p.9 2, 

1714. 1 Calcium Chloride Tube, Fig. 6, 
J>.9v, 

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. 1 Tubulated Retort and Receiver, 

pint, 

. . i . . a it \. tt 

2054. 1 Metal or Glass Cistern, 

1* Porcelain Cistern, Fig. 15, p. 

117, 

1 Adjustable Clamp, Fig. 15, p. 
117, 

1971, 72, 74. 1 Phosphorus Tripod Ap 
paratus, Fig. 17,j;. 119. 

1478. 1 Compound Blow-pipe, 

3108. 1 Wire Gauze Cage, Fig. 1, p. 91, 

1960. 1 Safety Lamp, 

3186. 1 Gas Furnace, Fig. 7, p. 98, 

1602. 2 Bunsen Burners, 

3234. 2 Retort Stands, 

H066. 4 Iron Sand Baths, 

J969. 6 CouibustionSpoonSjWithcov rs, 

3226. 1 Test Tube Rack, 

1405. 1 Hydrogen Balloon. 

2382, 2363. 1 Two-Gallon Gas-bag, with 
Stop-cock. 

2221. 1 Nest Evaporating Dishes, 

1422. I " Beakers, from 1 qt. down, 

1899.1 " Hessian Crucibles, 

1885. ^ doz. Porcelain Crucibles, with 
covers, 

3378. 1 Ib. Glass Tube, assorted, 

3387. 8 ft, Rubber " 

2938. 3 ft. Platinum Blow-pipe Wire, 
i oz. Platinized Asbestos. See 
Chemicals. 



3510. Set of Apparatus , arranged for the purpose of illustrat 
ing a short course of Popular Lectures. Price, $200.00 

1 pr. Trimming Scissors, 

1 " Small Tongs, with bent ends, 

1 " Tube Tougs, wood, 

1 " Charcoal Tongs, 

1 " Steel Crucible ditto, 

1 " Platinum Pointed Forceps, 

doz. Glass Flasks, 4 oz., 

i " " " 8 " 

i (t u u 16 



2827. 1 Porcelain Mortar, 3^ in., 

" 1 " 5 " 

2822. 1 Iron, " 6 

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 lor ditto, 
2586. 1 Blow-pipe Spirit ditto, 



3080. 
3321. 
1750. 
3319. 
3322. 
2303. 
2276. 



218 



E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 



APPARATUS. Continued. 



2276. 2 Glass Flasks, 32 oz.. 

2233. J " with Delivery Tube, 

" 1 Evolution flask, with Delivery 

Tube. 
3027. 3 Plain Retorts, 4 oz., 

" 3 u " 8 " 

" 3 u " 16 " 

3031. 2 Clark s Retorts, 
3040. 1 Oxygen " quart, 
3033. 2 Tubulated Stoppered Retorts, 
8 oz., 

" 2 Ditto, ditto, ditto, 16 oz., 

" 2 Ditto, ditto, ditto, 32 " 
3016. 2 Ditto, ditto, Receivers, 4 oz., 

" 2 Ditto, ditto, ditto, 8 " 

" 2 Ditto, ditto, ditto, 16 " 
3234. 1 Iron Retort Stand, with 3 Rings, 
1422. 1 Nest Beakers, plain, Nos. to 8, 
1434. 1 " " lipped, 1 to 5. 

3269. 3 doz. Test Tubes, 5 in.. 

" 3 " " 6 " 

1575. i " " Brushes, . 

3274. i " " Holders, 

1 Nickle Plated Test Spoon, 
3278. 2 Porcelain Test Plates, 
3262. 2 Conical Test Glasses, 2 oz., 

U i) it ti A it 

" 2 " " " 8 

3226. 1 Test Tube Rack, 
3367. 1 doz. Sheets Test Paper, . each 

Red, Blue and Yellow, 
1 Collection Test Metals. See 

Minerals. 
2357. 1 Hand Furnace, Clay, with Iron 

Binding, 
3353. 1 Tripod Support, 

3215. 2 Table Supports, with Fork and 

Pins, 

3206. 1 Hinged Wood Clamp Support, 
3237. 1 Shelbach s Support, with Iron 

Foot, 

2322. doz. Glass Funnels, assorted, 
2335. 2 Safety 

2331. 1 Coin. Filte:ing ditto, 
2216. 2 Filter Dryers, 
3255. 1 Pack Filters to fit Funnels, 

3216. 1 Wood Filter Stand, with 1 arm, 
3218. 1 " " " " 2 " 
2251. 2 Porcelain Filter Rings, each 

with 3 arms, 

2442. 1 Graduated Measure, 4 oz., 
1 " "8 " 

1 " 16 

2440. I Minim Glass, 

30(55. 1 Deep Sand Bath, 7 hi., 

3066. J Shallow " 6 " 

K>80. 1 Air Globe, 1 gal., 

J971. 1 Deflagrating Globe, 2 gals., 

1966. 1 Spoon, 

1 Cap, 

2039. 1 Schuster s Dropping Bottle, 
plain, 



2040. 

3406. 
u 

1542. 
1519. 

1519. 
1519. 
1524. 
1524. 
1532. 
3164. 
3164. 
3164. 
2906. 
2907. 
2955. 

2671. 
3378. 
33H7. 



1356 
302 J. 
30-23. 
3358. 
1583. 
1405. 
2402. 
2^20. 

2225. 
^225. 
22^5. 
2216. 

1885. 
1897. 
1893. 
3408. 
3408. 
3408. 
3409. 
1690. 
1687. 
1687 
2002. 
1283 
1942. 

1446. 
1446. 
1448, 

1452. 

2550. 



1 Ditto, ditto, ditto, stoppered, 
1 Washing Bottle, pint, 

1 " " quart, 

2 Woulff s Bottles, 3 necks, 

2 Bottles, with glass stoppers, for 

Distilled Water, 

3 Ditto, ditto, ditto, quarts, 
3 Ditto, ditto, ditto, gal., 

1 doz. Ditto, ditto, ditto, 8 oz., 
1 " Ditto, ditto, ditto, 16 oz. f 
1 Bottle, for Chlorine, 
1 doz. Glass Stirrers, 3 in., 

I tl Q 

1 " Q 

^ Straight Pipettes, 
i Bulbed " 

1 Japanned Pneumatic Trough, 
12x15. 

1 Mercury Trough, 10 Ibs, 

2 Ibs. Glass Tubing, assorted, 
6 ft. Rubber Tubing, 

4- doz. Funnel Tubes, 

1 " Arsenic " 

" Reduction " with 1 Bulb, 

i 2 

1 Set Tubes for Hydrogen Tones, 

1 Pipe for Hydrogen Bubbles, 

1 Small Balloon, 

1 Glass Generator,. 

2 Sets common Evaporating 

Dishes, with lips, 
1 Porcelain ditto, 6 in., 
1 " " 10 " 

1 " " 12 " 

1 Set Royal Berlin Evaporating 

Dishes, small, shallow, 
I Doz., ditto, Crucibles, No. 2, 
1 Nest of 5 Hessian " 
1 Platinum Crucible, 
.7 doz. Watch Glasses, 3 in. f 



I " " Springs, 

3 Small, shallow R. B. Casseroles, 

J Semi-Berlin Casserols, 4 in., 

1 " " 6 " 

6 Assorted Porcelain Digesters, 

84. 3 a Glass Adapters, 

6 " " Cylinders, Avith 

Ground To]s, 
^ doz. Bell Jars, pints, 
" " (piartH, 

J Bell Jar, with Glass Foot, 6 x 

12 in., 
1 Bell Jar, with Brass Cup, Stop 

cock and Connecting Tube, 
3 Specie Jars, with Ground Tops, 

i gal , 
6 Ditto, ditto, ditto, ditto, 1 gal., 



1486. 1 Berzelins, Blow-pi 
1848. 1 Gross Assorted Corks, 
1851. Set of 12 " Corkborers, 



OP OHEMICAL Ai*D PHYSICAL APPARATUS. 



219 



APPARATUS. Continued. 



3256. 3 Tapers, mounted on Wires, 
1 864. doz. Glass Covers for Jars, 
3237. 1 Triangular File, 
3236. 1 Semicircular " 

" 1 Eat s Tail 
it 1 it 

2578. 2 Sets Chemical Labels. 



4 in., 



2024. 1 Still and Worm, 2 sals.. 

24CO. 2 Sets of Voii Babo*s Apparatus 

for evolving Sulphuretted 

Hydrogen, 

2382. 2 Five-gallon Gas-bags, fitted, 
2417. 3 Assorted Gas Tubes, 
1441. 1 Small Beehive Shelf 
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. 




3511 

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 f 
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.c., in 

halves, 

2 Ditto, ditto, 50 c.c., in fifths, 
1 Ditto, ditto, 25 c.c., in tenths, 



1591. 1 Ditto, ditto, 50 c.c., in tenths r 

with Stopcock, 

1587. ] Bink s Burette, 100 c.c., 
3207. 1 Wood Support for 4 Burettes,. 



320 



E. B. BENJAMIN" S DESCRIPTIVE CATALOGUE 



APPARATUS. Continued. 



3204. 1 Brass Support for 2 Burettes, 
1597. 5 Erdniau s Floats to fit ditto, 
2913. 1 Graduated Pipette, 100 c.c., in 

ones, 

" 1 Ditto, ditto, 50 c.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 c.c., 
" 1 Ditto, ditto, with ditto, 100 

c.c., 

" 1 Ditto, ditto, ditto, 250 c.c., 
" 1 Ditto, ditto, ditto, 500 c.c., 



1946. 1 Graduated Cylinder, 1,000 c.c., 

2593. I Mixing Jar, stopper d, 1,000 c.c., 

2692. 1 " Bottle, 1,000 c.c., 

3278. 1 Porcelain Slab, 5 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, oz., 

3164. 1 " Stirring Rods, 

2318. " Glass Funnels, 1 to 4 in., 

3378. Ib. 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 oz., 
2615. 3 ft. of Wick for the same, 
2442. 1 Graduated Measure, 1 oz., 
2279. 3 French Flasks, 4 oz., 

" 3 " " 8 oz., 

2276. 3 Bohemian " 8 oz., 

" 3 " " 16 oz., 

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, 2x1 2 in., 
1446. 1 Knobbed Bell Jar, pint, 

" 1 " " " quart, 

1453. 1 Stoppered " " " 

" 1 " " " gallon, 

1687. 1 Porcelain Casserole, 
2002. 1 " Digester, 
3033. 1 Stoppered Retort, 4 oz., 
3027. 1 Plain Retort, 4 oz., 
1 Brass Retort Stand, 
1971. 1 Deflagrating GL,be, 1 gallon, 
1966. 1 Spoon and Cover, 

2222. 6 Semi-Porcelain Deep Evaporat 
ing Dishes, 
2210. 2 Berlin ditto, about 8 in., 

" 2 ditto ditto, " 10 " 



1 oz. Acid, Acetic, 



1* 

1 

2 
I 



Tartaric, 
Alum, Crystals, 
Ammonia, Carbo 
nate, 

" Nitrate, 
" Oxalate, 



2938. 1 
CHEMICALS. 

3 oz. Ammonium Chlo 

ride, 

2 " Barium, Chloride, 
2 " " Nitrate, 

4 " Calcium, Chlor 

ide, Fused, 
4 " " Hydrate, 



2970. 1 Conical Jar, tall, 4 oz., 

3262. 3 Test Glasses, assorted. 

small, 

3226. 3269. 1 Test Tube Stand, filled, 
3474. 2 Test Tube Holders, wood, 
2322. I Glass Funnel, 2 inches, 

1 " 2* " 

u i t n 3 n 

1897. 1 Sand Crucible, No. 0. 

" 1 < " No. 1. 

" 1 " " No. 2. 

225">. 1 Pack Filters, 5 in., 

" 1 " " 6 in., 

" 1 " " . 7 in., 
3217. 1 Filter Stand, 
14H3. 1 Black s Blow-pipe, 
2925. 1 Small Platinum Capsule, i oz , 
3125. 1 " Steel Spatula, 
3321. 1 pair Japanned Tongs, 
31">5. 1 Horn Spoon, 
3350. 1 Porcelain Triangle, 
3164. doz. Stirring Rods. 
3407. 1 pair Watch Glasses, 
1755. 1 Watch Glass Holder, 
2^68. 2 doz. Sheets Litmus Paper, each 
color, 

1516. i doz. Salt-Mouths, 1 oz., 

1517. \ " Tinctures, ] o/., 

1504. H doz. Packing Bottles, corked, 

2 00.. 

" 1 Ditto, ditto, ditto, 4 oz., 
2935. 1 SpeciuuBU Platinum Foil, 



Wire. 

oz. Copper, Bl k Ox 
ide, 
" Iron, Proto-Sul- 

phate, 

" u Sulphide, 
" Magnesia, Calc d, 
" "< Sulphate, 



OF CHEMICAL AXP PHYSICAL APPARATUS. 



221 



CHEMICALS. Continued. 



8 oz. 
1 " 



Manganese, Per- 
Oxide, 

Mercury, Red Ox 
ide, 

Phosphorus, 



1 oz. Potassa, Carb e, 1 

4 " Chlorate, 1J 

1 " " Hydrate, 1 

4 " " Nitrate, 6 

3 " Silica, in powder, 



oz. Soda, Biborate, 
" " Carbonate, 
" Phosphate, 
u Zinc, GraLulated. 



3513. List of Apparatus, for use in the Volumetric Analysis 
of Urine. Price, $20.00 

1590. 1 Mohr s Burette, 

320li. 1 Burette Support, 

2899. 1 Clamp and Tip, with Kubber 

Attachment. 
2913. 1 Graduated Pipette, 25 c.c. in 

fifths, 

" 1 ditto ditto, 25 c.c. in tenths, 
1946. 1 ditto Cylinder, 500 c.c. lipped, 
2909. 3 Fixed Pipettes, ass d, 5 to 20, 
2906. 3 Straight " for decanting, 



2276. 1 Bohemian Flask, wide mouth, 



2636. 1 Litre " 

11 1 quart r Litre " 

2322. 1 Glass Funnel, 



8 oz., 
16 " 

.).- <( 



2322. 1 Glass Funnel 2 in., 
2255. 1 Pack Filters for each size, 
3216. 1 Funnel Holder, 
326*2. i doz. Test Glasses, | oz., 
" I " " " loz., 
3269. i " " Test Tubes, with wide 

mouths for Hydrometer, 
3226. 1 Support for ditto, 
1420. 1 Set of six Beakers, 
1438. 1 Beaker Flask, 
3278. 1 Porcelain Slab, 6 in., 



2922. | doz. Porcelain Plates for Indi 

cating Test, 
2634. 1 doz. Sheets Litmus paper, each 

color, 

1519. 1 Bottle for Litmus Tincture, 
3406. 1 Wash Bottle, pint, 
3164. - doz. Glass Stirrers, 6 inch. 



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, 

2598. 1 Spirit Lamp, 

2635. 1 yard Lamp Wick, 

1644. 1 Lamp Cylinder, 

3233. 1 Iron Stand, with 2 Rings, 

3066. 1 Sand Bath, 

3410. 1 Water " 

3353. 1 Tripod, 

3461. 1 sq. ft. Wire Gauze, 

2518, 19. 1 Urinometer, with Solution 

Tube, 

1885. 1 Porcelain Crucible, No 1, 
9925. 1 Platinum Capsule, oz., 

CHEMICALS. 

8 oz. Acid, Acetic, 2 oz. Ammonia, Oxalate, 

8 " " Hydrochloric, 8 " " Spirits, 

8 " " Nitric, 2 " Baryta, Nitrate, 

2 " Ammonia Carbon te 4 " Potash, Caustic Sol. 



3321. 1 pr. Tongs for holding the same 

1675. 3 Porcelain Capsules, assorted, 

3269. 8 Test Tubes, 6 in., 

3269. 2 " " 4x1 in., 

3267. 3 doz. Assorted Test Papers, 

2322. 1 Glass Funnel, 2 in., 

22oo. 1 Pack Filters, to fit the same, 

3164. 3 Glass Stirrers, 

3104. 4 " Slides, 

3407. 3 Watch Glasses, 

2440. 1 Graduated Minim Glass, 

2906. 2 Straight Pipettes, 6 in. 



4 oz. Copper, Sulphate, 

i " Silver, Nitrate, 

1 " Zinc,Chlo ide,fus d. 



3515. Apparatus, for Qualitative Chemical Analysis. 

Price, $50.00 



2829. 1 Porcelain Mortar, 2 in 
2599. 1 Spirit Lamp, 3 oz., 
2615. 1 yd. Wick lor ditto, 
3080. 1 pr. Trimming Scissors, 
3350. 2 Porcelain Triangles, 



1644. 1 Lamp Cylinder Furnace, 
3351. doz. Wire Triangles, 
3066. 1 Five-inch Sand Bath, 
1885. 1 Porcelain Crucible, 1 in., 
2424. 1 sq. ft. Iron Wire Gauze, 



E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 



APPARATUS. Continued. 



3234. 1 Iron Retort Stand, with 3 Iron 

Rings, 

24*24. 1 Coarse Wire Netting for sup 
porting Tubes when in the 
Sand Bath, 

2003. 1 Porcelain Digester, 
3323. 1 pr. Steel Crucible Tongs, 
167 J. 6 Small Evaporating Capsules, 

plain, glazed both sides, 
2276, 1 Cooking Flask, each 2, 4, 6 oz., 
1419. 1 Nest Beakers, 1 to 5, 
3027. 1 4-oz. Retort, plain, 
3033. 1 " " stoppered, 

3014. 1 " Tubulated Receiver, 
3331. 1 Clark s Retort, 
3217. 1 Funnel Holder, 
3164. 1 doz. Glass Stirrers, 3 in., 

" i " Ditto, ditto, each 6 and 9 in, 
2318. 1 Glass Funnel, each 2, 2J, 3 in., 
2255. 1 Pack Filters, each size to fit 

above, 

3226. 1 Test Tube Stand, filled, 
2221. i doz. Semi-Berlin Evaporating 

Dishes, a set, 
3407. 1 pr. Watch Glasses, 2 in., 

A collection of forty Reagents can 
required, at reasonablo prices. 



1755 1 Watch Glass Holder, 

1690. I Small Royal Berlin Casserole, 

3462. doz. i-oe. Test Glasses, 

2906. i " Straight Pipettes, 6 in., 

2907. 2 Cylinder " 
" 1 Bulb " 

3259. 1 doz. 6-in. Test Tubes, 

" 3 Test Tubes, 2 in high, 1 in. wide, 
3378. 1 11). Glass Tubing, 3-in. bore, 
3J74. 2 Wooden Test Tube Holders, 
1575. 2 Test Tube Brushes, 
3406. 1 Wash Bottle, pint, 
3387. I ft. Rubber Tubing, 
2039. 1 Shuster s Alkalimeter, plain, 

6 Pieces of ordinary Glass, 4x6 in, 
3267. 6 Sheets Test Paper, assorted, 

1 Small collection of Test Metals, 

for Precipitating, 
2233. 1 Evolution Flask and Delivery 

Tube, 
2427. 1 Plate Cobalt Glass, 

1 Hollow Glass Prism, small, 
3278. 1 Flat Testing Slab, 
2924. 2 Porous Plates, for drying Pre 
cipitates, 

be included in the above, in bottles, if 



3516. Apparatus for Physicians, for Medical Tests. $125.00 

1 Blow-pipe Hammer, 

4 large Bulb Tubes, Arsenic, 

Clark s, 

4 Glass Flasks, 1 each, 2, 4, 6, 8 oz , 
\ doz. Hard Bohemian Test Tubes 

for Reductions, 
1 set Lipped Beakers, 1 to 5, 

1 " Beakers, to 5, 

2 Watch Glasses, 3 in., 

] set Bohemian Glass Evapora 
tors, plain, 

1 Watch Glass H der, Hoffmann s, 
1 " " " Mohr s, 

1 doz. Test Tubes, each 3 and 5 in., 
$ " " " 3 in. wide, 

2 Wooden Test Tube Holders, 

1 Mahogany Test Tube Stand, 
small, with Drying Pins, 

1 nest of Test Tubes, in paste 
board box, 

4, 5. 1 doz. Porcelain Digesters, 
assorted, 

% doz. 1 oz. Test Glasses, 

| " Stirring Rods, ea. 3 & 6 in., 



2829. 1 Small Porcelain Mortar, No. 0, 

3125. 1 4-in. Steel Spatula, 

1400. 1 Apothecaries Balance, small, 

3451. 1 Set Grain Weights, for ditto, 

2439. 1 Graduate, 1 oz., 

2598. 1 4-oz Spirit Lamp, 

2615. 1 yard Wick for ditto, 

3352 or 53. 1 Tripod, 

3234. 1 Retort Stand, with 3 Rings, 

3066. 1 5-iu. Sand Bath, 

2424. 1 Coarse Wire Gauze, for support 
ing Tubes, 

3351. 6 Wire Triangles, 

2424. 1 sq. ft. Iron Wire Gauze, 

1486. 1 Berzelius Blow-pipe, 

1494. 1 Plattner s Blow-pipe Lamp, on 
Stand, 

1704. 4 pieces Prepared Charcoal, 

1705. 1 Charcoal Support, 

2938. 1 ft. Blow-pipe Platinum Wire, 
2935. 1 sq. in. Platinum Foil, 
2940. 1 Plat. Crucible, withcoveiyjoz, 
2925. 1 Platinum Capsule, ^ oz., 
3455. 3 ft. Fine Copper Wire, 
2303. 1 pr. Platinum pointed Forceps, 
2928. 1 Platinum Spoon, 
2308. 1 pr. Blow-pipe Tongs, with Pla 
tinum Points, 
2298. 1 pr. Steel Forceps, 
3080. 1 pr. Scissors, 
3149. 1 Brass Weighing Spoon, 
1344. 1 Blow-pipe Auvii, 



2447. 
1356. 

2276. 
3268. 

1434. 
1420. 

3408. 
2205. 

1755. 
1756. 
3269. 
3269. 
1749. 
3227. 

3271. 

2002, 

3262. 
3164. 
2906. 

2907. 
2969. 
3378. 
2318. 
2255. 
3217. 



Plain Straight Pipettes, 5 
or 6 in., 
1 Bulb Pipette, 
1 " " Bent Top, 

i lb. Glass Tubing, 
1 Glass Funnel, ea. H, 2, 2|, 3 in., 
1 Pack of Filters for each size, 
1 Wood Funnel Holder, 



OF CHEMICAL AND PHYSICAL APPARATUS. 



223 



APPARATUS. Continued. 



2251. 2 Porcelain Filter Rings, 3 arms, 
2246. 1 Filter Dryer, 
3406. 3 oz. Wash Bottle, 
3408. 3 Glass Covers, 3 in., 
2924. 2 Porous Plates. 

1 Small Col lection of Test Metals, 
2634. 1 doz. sheets Litmus Paper, each 

Red and Blue, 

3278. 2 White Glazed Porcelain Slabs, 
2211. 1 set Royal Berlin, Small, Eva- 



1885. 1 Porcelain Crucible, with Covers, 

each 00, 0, 1, 2, 3, 
1350. 1 Marsh s Arsenic Apparatus, 

complete, 

1356. 2 doz. Assorted Arsenic Tubes, 
2233. 1 Evolution Flask and Delivery 

Tube, 

3031. 1 Clark s Retort, 
3033. 1 4 oz. Stoppered Retort, 
1542. 1 8oz. Won Iff s Bottle, fitted Rub 
ber Corks. 



porating Dishes, 
2210. 4 ditto ditto, No. 6, 

The following bottles, containing Chemicals, as below : 
1524. Tinctures, 8 1-oz., 14 3-oz., 3 4-oz., I 1516. Salt-Mouths, 16 |-oz., 7 
6 8-oz., 

CHEMICALS. 

1 Piece Copper Foil, 3x3 

in., pure, 
4 oz. Ferrous Sulphide, 



4-oz. 



4 oz. Acid Acetic, 
" Tartaric, 
" Oxalic, 
Barium Chloride, 

" Nitrate, 
Cobalt Sol. " 
Ammonia C bonate, 
" Chloride, 
" Oxalate, 
" Sulphide, 
Calcium, Chloride, 
" Sulphate, 
1 oz. Copper Ammoniated 

Sulphate, 
1 Ib. Copper Sulphate, 



2 
6 
4 
2 
4 
4 
4 
4 
6 
lib. 



Sulphate, 

1 Indigo, 

4 Charcoal.Powdered, 
4 * Ferric Chloride, 
4 Flux Black, 
8 l Lead Acetate, 

2 Mercury Chloride, 2 
2 Ib. Manganese, Oxide, 1 
4- oz. Platinum, Chloride, 4 

Sol, 8 

^ Ib. Potass. Bichromate, 2 
2 oz. " Ferricyanide, 3 



1 oz. Potass. Sulphocy de, 
1 " " Carbonate, 
1 " " Cyanide, 
1 " Silver Amm d, Sol., 
i " Ditto Nitrate, cryst., 
1 " Zinc, Chloride, 
i Ib. " Pure, in Sticks, 
4 oz. Potass. Ferrocy de, 



Ferridcy ide, 
" Hydrate, 
Iodide, 
" Nitrate, 
Sodium, Carbonate, 
11 Phosphate, 
Tin, Chloride. 



3517. Apparatus, for Miners and Engineers. Price, $105.00 



1 Small Cheap Balance and Set 

of Grain Weights. 
2439. 1 2-oz. Graduate, 
1998. 1 Steel Crushing Mortar, 
2818. 1 2-in. Agate " 

3827. 1 3-in. Porcelain Mixing Mortar, 
3125. 1 Steel Spatula, each 4 and 6 in., 
2237. 1 Triangular File, in handle, 
2236. 1 Round " " 

" 1 Half Round File, 
2599. 1 Glass Spirit Lamp, 3oz., 
2615. 1 yd. Wick for same, 
3080. J pr. Trimming Scissors, 
3321.1 " Japanned Tongs, 
3234. 1 Iron Retort Stand, with 3 Rings, 
1885. 1 Porcelain Crucible, each No. 1. 
2002, 2005. 8 Assorted Porcelain Di 
gesters, 
1488. 1 Berzelius s Brass Blow-pipe, 

with extra Jet, 

2940. 1 Platinum Crucible, oz., 
2604. 1 Plattner s Blow-pipe, Lamp and 

Stand, 

1344, 2446. 1 Anvil and Hammer, 
3226. 1 pr. Blow-pipe Tongs, Avith Pla 
tinum ends, 
3116. 1 Mixing Spoon, with Spatula, 



2938. 2 ft. Platinum Blow-pipe Wire, 
2935. 1 sq. in. Foil, 

2925. 2 Small Platinum Capsules, 
2305. pr. " " Pointed Tongs, 

3455. yd. Copper Wire, 
1701. doz. Blocks Prep d Charcoal, 

Bottle Charcoal Powder, 16 oz., 

" Rice Flour, 4 oz., 
2833. Mould for Pastiles, 
3351. 1 Small Wire Triangle, 
3278. 2 5-iu. Porcelain Plates, 
3269. 1 doz. Narrow Test Tubes, 3 in., 
3371. 1 " Small Specimen Tubes, 

corked, 

2621. 1 Magnifying Lens, in horn case, 
3378. 1 Ib. Glass Tubing i in. bore, 
3333. 1 pr. Cupel Tongs, 
1356. 1 doz. Assorted Tubes, Liebig s 

form, 

1432. 1 Set 3-lipped Beakers, 
1421. 1 " of 6 " to 6, plain, 

2276. r 2 doz. Flasks, assorted, 2 to 6 oz., 
3407. 2 Watch Glasses, 2 in., 
1755. 1 Hoffman s Glass Clamp, 
2575. 1 Blow-pipe Knife, 
1690. 1 Small R. Berlin Casserole, No. 1, 
1687. 1 Semi " " " No. 1, 



E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 



APPARATUS. Contin ned. 



2233. 1 Evolution Flask, with Delivery 

Tube, 

3031. 1 Clark s Retort, 
3378. i Ib. assorted Glass Tubing, 
2322. 1 Glass Funnel, ea. 2, 2$ & 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, 
J575. 2 Test Tube Brushes, 
3267. 6 sheets Assorted Test Papers, 

1 Small Collection of Test Metals r 
2210. 3 Smallest size Royal Berlin Evap 
orating Dishes, 00, 0. 1 . 
3164. doz 0-in. Glass Stirrers, 
3008. L Box Blow-pipe Reagents. 



The Chemical Tests, to accompany the above Apparatus, 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 

Price, $15.00 

2278. 1 16 oz. Flask, Round Bottom, 
3406. 1 Pint Wash Bottle, 

3104. 4 Glass Slides, 

3378. i Ib. Glass Tubing, | in bore, 

2279. 1 Flask for Sulphtir d Hydrogen r 
3408. 3 Watch Glasses, 2 in., 



covers. 

2498. 1 Glass Spirit Lamp, 4 oz., 

2615. -j 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 

H in., 

3321. 1 pr. Japanned Crucible Tongs, 
31-25. 1 4-in. Spatula, 
2827. 1 Porcelain Mortar, 2^ in., 
1418. 1 Small Set B.-aker Glasses, to 4, 
2221. 1 ]S T est Porcelain Evaporators, 
2276. 2 4-oz. Flasks, 

3519. Apparatus, for performing most of 
described in Stockhardt s Chemistry. 



3164. 2 Stirring Rods, 6 
3226, 3371. 1 Test Tube Rack, filled, 
3267. 6 Sheets, each kind, Test Papers,. 
3387. 1 ft. Rubber Tubing, ^ in., 



2318. 1 2-in. Bohemian Funnel, 
2317. 1 American " 3 

2255. 1 Pack Cut Filters, 3 

" 1 " 5 

2237? 1 Triangular File, 
2236. 1 Round " 



in. 



the experiments 
Price, $15.00 



3033. 1 4-oz. 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 oz., 

2498. 1 Sinn 11 Spirit Lamp, 

2615. 1 yd. Wick, 

1483. 1 B.ack s Blow-pipe, 

1502. 1 doz. ass d 4-oz. Bottles, stop 
pered and corked, 

2938, 2935. 1 Small piece of Platinum 
Wiiv and Foil, 

2829. Porcelain Mortar, 00, 

1644. Cylinder, 

3422. ft, Wire Gauze, 

3274. Test Tube Holder, 



3226, 



371. 1 Test Tube Rack, filled, 



2322. 1 Funnel, 1 } and 2 in., 

22 5. 1 Pack Filters, each 3 and 4 in. r 

3104. 6 Glass Slides, 

2634. 1 doz. Blue Litmus Paper, 

1 Piece Pure Zinc, 

3164. 2 Glass Stirrers, each 3 and 6 in. r 
2221. 1 Semi-Porcelain Evaporator, 

shallow, 3^ in., 
3029. 1 Glass Oxygen Retort, 2 bulbs r 

6 oz., 

2233. 1 Flask, with Deli v y Tube, 16 oz. 
1441. 1 Beehive Shelf, 
2236. 1 Round File, with handle, 
3378. i Ib. Assorted Glass Tubing, 
3353. 1 Brass Tripod, 
3147. 1 Iron Spoon, 
3233. 1 Retort Stand, with 2 Rings, 



2331. Funnel Tube, 3066. 1 Small Sand Bath, 4 in., 

1885. Porcelain Crucible, 1715. 1 Chloride of Calcium Tube, 

3262. 1 4-oz. Test Glass, 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 furnished, 
if desired, at reasonable rates. 



OF CHEMICAL AXD PHYSICAL APPARATUS. 



225 



3520. Apparatus, for Analysis of Urine, to accompany Man 
ual, by Dr. Austin Flint, Jr. Price, $40.00 

APPARATUS. 



a I Urinometef, 6 oz., 
6 1 Thermometer, ] oz., graduated in 
drachms, 

c Graduated Glasses, 1 drachm, 

d 4 Conical Glasses, with Porcelain 

Covers, 
e Porcelain Evaporating Dishes and 

Watch Glasses, 

/ Test Tube Stands, with Test Tubes, 
y 3 Funnels and Filtering Paper, 
h 3 Flasks and Wire Gauze, 
i Buusen s Burner, Rubber Tubing. 

etc., or Alcohol Lamp, 



fc Burette, graduated in grains, 

I 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 Calculi, 

r Blow-pipe, 

8 Colored Papers, gummed for record 
ing the color of specimens. 



JHEMICALS. Case of Reagents containing : 

8 Sol. of Soda, Specific Gravity, lv!2 f 

9 Liquor, Potassa, 

10 " Ammonia, 

11 Ether, 

12 Mercury, 

13 Solution of Hypochlorite Soda, 

14 Ditto, Chloride of Sodium, sat rat d, 

15 Test Papers, 

16 German Yeast. 



1 Nitric Acid, 

2 Hydrochloric Acid, 

3 Acetic " 

4 Nitros-Nitric " 

5 Nitrate, of Silver, in solution, 9 58 

grains in an ounce, 
C Sulphate of Copper, in ditto, 94 73 

grains in an ounce, 
7 Neutral Tartrate of Potash solut n, 

378 91 grains in an ounce, 



EXTRA APPARATUS AND CHEMICALS. 



a Hydrometer, of Baurhe s, for Li 
quids heavier than Water, 

6 1000-gr. 500-gr. and 100-gr. Specific 
Gravity Bottles, 

c Water Bath, 

d " Oven and Swedish Filters, 

e 2 Wash Bottles and 3 Precipitating 
Glasses, 

1 Sesqui Chloride of Iron ; 9-33 grs. 
of Iron by Hydrogen dissolved 
in Hydrochloric with a little 
Nitric Acid, evaporated to dry- 
ness and dissolved in 6 fluid ozs. 
of Water, 



/ A Balance at least delicate enough 
to turn with ^ 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 ic 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 
Water. 



3521. Apparatus, for Assay. 

1369. Assay Balance, No. 1 ....................................... $50.00 

1370. Ditto, ditto, No. 2 .......................................... 72.00 

1371. Ditto, ditto, No. 3 .......................................... 72.00 

1372. Ditto, ditto, ditto, with Apparatus for Rider ............... 78.00 

3417 to 3433. Weights, various prices. 

3522. Basin for Washing Gold... ............................... 1.50 

1462. Assay Bellows ..... .............................. ......... 75 to 1.00 

1486 to 1490. Assay Blow-pipes .................................. $2.00 to 4.00 

1581. Assay Brushes, for cleaning Button ......................... .50 

1712. Ditto, Chisels, for clipping Ingots ........................... .50 

1876. Ditto, Crucibles ................................... Per doz. 1.00 

1877. Ditto, ditto, Iron .................................. " 2.50 

1 878. Ditto, ditto, French, Beaufay ................................ 05 to .08 

1879. Ditto, ditto, Covers ......................................... 50 to .75 

1870. Ditto, Glass Covers ......................................... 50 to .75 



226 E. B. BENJAMIN S DESCRIFTIVE CATALOGUE. 

APPARATUS. Continued. 

1882. Assay Crucibles, Plumbago $.20 to 1 63 

1893. Ditto, ditto, Platinum Per gramme . .40 to .45 

1895. Ditto, ditto, Metallurgists .20 

1896 to 1907. Ditto, ditto, Sand 05 to .35 

J908. Ditto, ditto, Roasting .75 

3911. Ditto, ditto, Supports .60 

19J9. Bone Ash Cupels Per do/. .35 to 2.25 

194). Cupel Holders 1.00 

1921. Ditto, Moulds 2.50 to 4.50 

2007. Iron Dippers 40 to .50 

2008. Tin Dippers 60 to .80 

2016, Roasting Dishes Perdoz. .75 to 5.00 

2217. Evaporating Dishes Per set . 2.75 

2219. Ditto, ditto " . 2.50 

2236, 37. Files 18 to .50 

2273. Parting Flasks Perdoz. 1.50 

2274,2275. Assay Flasks .50 

2296. Forceps, for crushing the Button 1.75 

5J3&8. Furnaces, Kent s 21.00 

2361). Ditto, Cupelling , 15 to 35.00 

2361. Ditto, Hibb s Patent 50.00 

2365. Ditto, Griffin s Gas 20.00 

2368. Ditto, Chilton s 40.00 

2448. Hammers ; 1.00 

2451. Ditto 1.75 

2453. Ditto 2.50 

2838. Ingot Moulds 1.50 to 2.50 

2822. Iron Mortars 40 to 4.75 

2532. Ivory Scale, Harcourt s - 5.00 

26:21 . Lenses or Glasses, Magnifying 2.50 

2623. Ditto, ditto, Stanhope s 2.00 to 2.50 

2688. Mineralogists Slates, for trying the Streak of Minerals 40 to .50 

2841 to 2847. Muffles. . 30 to 2.50 

3008,3009. Reagent Cases 2 50 to 4.00 

3087. Scoops, for Assay 1.50 

3085. Scorifier Holders 1.50 

2836. Ditto.MouIdfl 5.00to7.00 

3086. Scorifying Moulds 1 -0 ) 

3180. Stop-cocks of Silver, for Assay 30.00 

2297, Tongs, for holding hot Tubes 1 .00 

3319 to 3320. Ditto, Coal 1 .00 to 1 .75 

3321 to 3328. Ditto, Crucible 50 to 6.50 

3333to3336. Ditto, Cupelle 1.50to2.75 

3337. Ditto, Scorifier 1.25 

Apparatus for General Use in Analysis: Spirit Lamps, Furnaces, Flasks, 
Beakers, Test Glasses, Baths, Filtering Apparatus, Evaporating Basins, Rr- 
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, 1 >r 
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 cov 
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. 1$ 75.00 



OF CHEMICAL AXD PHYSICAL APPAKATUS. 

3524. Apparatus, the same as the foregoing, in Brass. $260.00 
3525. Ditto, Lingke s, for Gold and Silver Assay. 200.00 

The above are all manufactured to order, by Dr. Lingke, and 
ihave 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 Jheir delicateness and accuracy. 

1370, 1372. Balances $72.00 to $78.00 

1482 to 1497. Blow-pipes, various 50 to" 12.00 

2932. Ditto, Tips, Brass and Platinum 10 to 1.50 

2568. Ditto, Jets .25 

1344 to 1346. Ditto, Anvils 75 to 1.00 

1581. Button Brush .50 

1694. Carbon Cells, for fusions .50 

1672. Blow-pipe Capsules Perdoz. 1.25 

1673. Ditto, ditto Each. .20 

1674. Ditto, ditto Perdoz. 1.20 

1675. Ditto, ditto " 1.75 

1701. Charcoal, 4 pieces for . .25 

1702. Charcoal Borers, Spatula Handles 30 to .40 

1703. Ditto, ditto, 4 points, Cocoa Handles 50 to .75 

1704. Ditto, ditto, 8 points, " 1.00 to 1.25 

1705. Charcoal Holders 2.75 

1706. 1707. Ditto, Saws 50 to .75 

1708. Ditto, Spatulas .50 

1711. Ditto, Sticks 50 to .60 

1709, 1710. Ditto/longs 75 to 1.25 

1712. Chisels for clipping Ingots .50 

3526. Clay Cylinder .25 

18UU. Compasses 2.50 

1806. Ditto 15.00 

1 870. Covers of Glass for covering Choice Specimens 50 to .75 

3527. Crucibles, Iron, with Cover. 

1919. Cupels, Bone Ash Perdoz. .35 to 3.25 

Bone Ash, for Cupels, according to quality. See Chemicals.. .30 to .70 

1920. Cupel Holders 1.00 

2941. Cutting Pliers 1.25 

2282. Blow-pipe Flasks Perdoz. .60 

2291 to 2312. Ditto, Forceps 25 to 2.50 

3528. Funnel Holders, Plattuer s .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 10.00 

2446. Ditto, Plattuer s .75 

2447. Ditto, Freiburg 1.00 

2448. 49. Hammers , . . . 1.00 to 1.25 

2451 to 2453. Ditto, heavier 1.75 to 2.50 

3529. Hare s Foot .10 

2457. Holders for Platinum, Spoons and Wire .60 

2575. Knives, Plattner s .75 

2 76. Ditto, for Glass Tubing .50 

2604. Lamp, Plattuer s, 3.00 

2596 to 2601. Spirit Lamps 50 to 1.00 

2659. Lead Measures .50 

2621 to 2628. Lenses 1.00 to 3.50 

2646. Magnets, Bar 1.00 

2688. Mineralogist s Slates, for trying the Streak of Minerals 40 to .50 

2690. Mixers, or Mixing Capsules, brass 50 to 1.00 

2691. Ditto, ditto, ditto, horn . .25 



22S 



E. B. BEXJAMIH S DESCRIPTIVE CATALOGUE 



APP AE ATUS. Cont inued. 

2818. Mortars, Agate $1.90 to 30.00 1 

1998, 99. Ditto, Diamond, of steel 5.00 to750 

2822. Ditto, Iron 40 to 4.75 

2831. Ditto, Steel, highly polished 2.00 to 5.00 

2832. Moulds, Boxwood, for Cartridge Cases .20 

1909. Ditto, ditto, for Charcoal Basins .75 

1910. Ditto, Brass, for Clay Crucibles 4.25 

1921. Ditto, ditto, for making Cupels 2.50to4.50 

2836. Ditto, ditto, ditto, Scoritier 5.00 to 7.00 

2838. Ditto, Iron, for Gold and Silver Bars 1.50 to 2.50 

1922. Ditto, Steel, for Cupels, with Supports 2.75 

2837. Ditto, Wood, for forming Charcoal pieces, oblong 1 .25 

353O. Ditto, ditto, ditto, ditto, blocks, square. 

2813. Month-Pieces of Horn .25 

2814. Ditto, ditto, Ivory .50 

1580. Pencils, Camels Hair, for taking up fine dust from the Bal 
ance Pan, etc .25 

Platinum Foil and Wire Per grain . .02 J 

3008. Reagent Cases, with turned Caps, small 2.50 

3009. Ditto, ditto, with space for Blow-pipe, Forceps and Platinum 

Box : 4.00 

3111, 12. Reagent Chests lO.OOto 12.00 

3046. Roasts, Plattuer s 2.00 

2658. Scales, Harcourt s, for Measuring the Button 5.00 

3080. Scissors 50 to 1.00 

3099. Sieves, Box, Griffin s 2.50 

3100. Ditto, Plattner s, Brass .50 

3117. Spatulas, Horn 10 to .40 

3124. Ditto, Steel, small .40 

3154, 55. Spoons, Horn 35 to .50 

3147. Ditto, Iron, small and large. 

3113. Ditto, Ivory, Plattner s, small and large. 
2928. Ditto, Platinum. 

3267 Test Papers Per sheet- .05 

3117. Tin Foil Per square ft . .15 

3349. Triangles, Plattner s .25 

1357. Tubes, Bulbs, for subliming Per doz . .75 

3417 to 3433. Weights, various prices. 

3455. Wire, Copper Perlb. 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, 

I Stand for Evaporating Dish, Trian- 2 Ivory Spoons, 

gles, etc., 1 Charcoal Saw, 

Funnel Holder and Chimney, 1 Mattrass Holder, 

Platinum Pointed Forceps, 1 Knife, 

Brass Forceps, 1 Assay Button Brush, 

Steel Forceps, for Lamp, 2 Mixing Capsules, 1 brass, 1 horn, 

Pair Cutting Nippers, 1 Steel Mixing Spatula, 

" Flat Forceps, 2 Brushes, 

Platinum Wire Holder, with 6 Wires, 1 Box for Soda Papers, 

Hammer, 1 Wooden Form for Paper Cylinders,. 

Anvil, 1 yd. Lamp Wick, 

Steel Mortar, 1 Cupel Holder, with 2 Cupel Cups 
Agate ditto, 2i in. in diameter, and 1 Mould, 

Charcoal Borer, club-shaped, 1 Charcoal Holder, with Platinum 

" four-cornered, Ring and Screw, 

" " with Spatula, 1 Test Lead Measure, 



OF CHEMICAL AND PHYSICAL APPARATUS. 



229 



APPARATUS. -Continued. 



I Box for Cla.y Crucibles. 
1 pair Lamp Scissors, 
1 Wash Bottle, 

1 Dropping Bottle, 

3 Porcelain Dishes, 3 sizes, 

2 " Cups, for Gold Assay, 

2 Watcli Glasses, 

6 Wooden Boxes, for Reagents, 

3532. Set of Apparatus, for Quantitative Blow-pipe Use. 

$15.00 



12 Bottles with Glass Stoppers, flat, 
1 Charcoal Holder Stand, 
L Coal Tray, 
1 Dirt " 

1 Clay Cylinder, 

2 Iron Rings, 

1 Hare s Foot. 



1 Charcoal Holder, with Platinum 

Ring and Screw, 

2 Ivory Spoons, 

2 Porcelain Cups, for Gold Assay, 

1 Box for Clay Crucibles, 

1 yd. Lamp Wick, 

1 Steel Mortar, 

1 Knife, 

1 pair Lamp Scissors, 

1 Wash Bottle, 



12 Glass Bottles, with Flat Stoppers. 
Hinrich s Elements of 



1 pair Flat Pincers, 

1 Assay Button Brush, 

2 Mixing Capsules, 1 Brass, 1 Horn, 

1 Cupel Stand, with 2 Cupel Cups and 

1 Mould, 

1 Charcoal Borer, club-shaped, 
1 " " four-cornered, 

1 " " with Spatula, 

2 Brushes, 1 large, 1 small, 
1 Box for Soda Papers, 

1 Wooden Form fin- Paper Cylinders, 
1 Test Lead Measure, 

3533. Apparatus, for illustrating 
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 iiachines(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. 

I. APPARATUS FOR GENERAL USE. 



7. Meter Rods, of wood or brass, sev 
eral, labeled No. 1, No. 2, etc. 
Decimeter Rules, of card paper or 
brass ; a great number ; to be 
distributed with the sets (see 
II); also called Centimeter 



Meter Tape, 10 meters long. 
10. A Twenty-five Cubic Centimeter 

Flask. 
A 100 ditto. 



11. Graduated Cylinders, several, viz: 
100 c.c. divided to 1.0 c.c. 

50 " " 0.5 " 

10 " " " 0.1 " 
Of the last a considerable number 

is required for the several sets 

15-21. Balances and Weights: 

a Druggists Counter Scales set. 
of Weights 0.1 gr. to 1000 grms., 
mainly for work in Chapter II. 



230 



E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 



APPARATUS FOR HiNRicn s PHYSICS. Continued. 



It Druggists Prescription Scales 
set of Weights 0. 1 to 50 grms. 

c Ditto, with Weights 0.01 to 50 
grms. ; with Equipoise for one 
scale-pan, fornse as Hydrostatic 
Balance. See 123. 

(Larger Laboratories require sev 
eral of each of these three bal 
ances.) 

35. Protractors, brass, horn ; a con 

siderable number, both ior sets 
in vi, Chap. Ill, and iv Chap. 

36. Goniometers; a considerable num 

ber, for sets in vi, Chap. III. 

37. A Good Pendulum Clock. 

38. A Simple Second Pendulum ; me 

tallic bob and double iron wire. 
(School Lab., 1871, plate 3, tig. 
6, upper pendulum.) 
Barometer Scale, English inches, 
to 0.0 1 inch. Convert to mm., 
by Table, p. 167. 



131 



136. Aspirator. 

148. Mortars, of Porcelain and Agatev 

259. Astronomical Telescopes, Achro 
matic. 

a Common, power 5 to 10. 
6* 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, 1 mm., iu 
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. 



II. SEPARATE SETS. 



Each set, as far as possible, put up in a 
(See article 49 .). 

12. Volume of One Drop of Water 

1. Tube Pipette ; 2. Graduated 
Cylinder, 10 c.c. to 0.1; 3. Bot 
tle for Distilled Water. 

13. Test Graduated Cylinder 1. 29. 

Graduated Cylinder, 10 c.c. to 
0.1 ; 2. A One -cubic Centimeter 
Pipette ; 3. Bottle for Water. 

14. Mensuration of Volume of Ves- 30a. 

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. S. Coins 
1. Half Dollar; 2. Quarter 
Dollar ; 3. Dime ; 4. Five Cents, 306. 
Nickel ; 5. One Cent, Copper. 
As 24&, c, etc., 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- 



separate tray ; all pieces labeled, 

tangular Block of Cork; 4. Rec 
tangular Piece of Lead ; 5. 
Sandstone ; 6. Limestone ; 7. 
Centimeter Scale. 

Specific Gravity of Liquids 1. 
Graduated Cylinder, 10 c.c. to 
0.1 ; Bottles coutain g : 2. Water ; 
3. Alcohol; 4. Gasolene. 

Specific Gravity of Solids Insolu 
ble in Water 1. Graduated Cyl 
inder; 2. Bottle with Water j 
Specimen Tubes with Fragment* 
of, 3. Galenite ; 4. Gypsum ;. 
5. Iron (nails); 6. Lead (shot) - t 
7. Sulphur; 8. Anthracite. 

Specific Gravity of Solids Solu 
ble in Water 1. Graduated 
Cylinder ; 2. Bottle with Gaso 
lene ; Specimen Tubes with : 
3. Crystals of Nitre; 4. Crys 
tals o"f 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 Tube Rack, 
12 Test Tubes, 4 in., 
12 " " 



$47.50 



2 Test Tubes, 7 in., 
1 " 8 " 

1 Nest of 6 Beakers, plum, 

3 " " " lipped. 
3 Funnels, H ", 

5 " 2| " 

2 " 3* " 



OF CHEMICAL AXD PHYSICAL APPARATUS. 



231 



STUDENTS QUANTITATIVE APPARATUS. Continued. 



1 Funnel, 4 in., 
1 " f> " 
1 Wash Bottle, piut, 
1 " 8oz., 

1 " 4oz., 

3 Convex Covers, 3 in., 

3 " 4 " 

3 " 5 " 

3 Ground Glass Covers, 3 in., 

3 " " " 4 " 

3 " " " 5 " 

6 Watch Glasses, 

2 Chloride of Calcium Tubes, 

1 Flask, 1 oz , for Carbonic Acid, 

1 doz. Specimen Tubep, 3 in., 

2 Dessicators, 
2 Glass Tubes, 

2 Glass Rods, 

3 Porcelain Crucibles. If in., 
2 " If " 

1 Nest of G Evaporating Dishes, 

2 Casseroles, 4 in., 

1 Porcelain Mortar, 4^ in., 

1 Blow-pipe, 

2 ft. Platinum Wire, 
2 Platinum Foils. 



1 File, 

2 Steel Forceps, 

1 oz. Bichloride of Platinum, Solu 

tion, 
6 " Nitrate of Silver, 

2 Bottles for ditto, 

2 " corked, 10 oz,, 

2 " " 8 " 

2 " " 4 " 

2 " u 1 a 

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., 

" 4 " 

Sheets Swedish Paper, 

Glazed 
Set Filter Patterns, 
ft Rubber Tubing, ^ 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 
vStudent as recommended by the School of Mines, Columbia Col 
lege, 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, 4 in., 
24 " (I " 

2 7 " 

1 " 8 " 

1 Nest of 6 Beakers, plain, 

2 Funnels, li in,, 



1 Wash Bottle, pint, 
b Watch Glasses, 

1 Flask, 4 oz , 

2 Glass Tubes, 

1 Glass Rod, 

2 Porcelain Crucibles, 

< 



Jf 



1 Nest of G Evaporating Dishes, 
1 Porcelain Mortar, 4 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 ditJo. 

2 " corked, 1 oz., 

2 Sand Baths, 

2 Wire Triangles, 

1 Towel, 

1 Scissors, 

1 Test Tube Brush, 

1 Horn Spatula, 4 in., 

2 Packages Cut Filters, 3 in. r 
2 " 4 " 

I Foot Rubber Tubing, -fa in., 
1 Piece Wire Gauze, 
1 Deflagrating Cup, 
1 Blue Glass. 



232 



E. B. BENJAMINS DESCRIPTIVE CATALOGUE 



HOFFMAN S APPARATUS. 



3536 3537 



3538 



3539 3540 3541 3542 3543 



Apparatus which may be Used to Illustrate Hoffman s Modern 
Chemistry. Most of these Forms are constantly on hand, and 
all the Joints are carefully sealed and Stop-cocks ground in 
the most careful manner. 

3536. Hoffman s Glass U Tubes, 16 inches (a), with plain bent 

Tube sealed in below _ $ 1 .00 

3537 . Ditto, ditto, ditto, ditto, 16 inches (&), with Platinum Electrodes 

sealed into the top of one of the Tubes $1 .25 

353. Ditto, ditto, ditto, ditto, 16 inches (c), with plain bent and inlet- 
tubes $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 

35-IO. Ditto, ditto, ditto, ditto, 16 inches (a), with deliv 
ery-cock at the base of one of the Tubes $2.00 

3541. Ditto, ditto, ditto, ditto, 16 inches (&), with deliv 
ery-cock at the base of one of the Tubes, and Platinum Elec 
trodes sealed into one of the Limbs $2.50 

3542. Ditto, ditto, ditto, ditto, 16 inches (c), Avitli glass 
outlet-cock and waste-cock at the top of one of The Limbs 

$3.00 





3546 



3549 



3543. Ditto, ditto, ditto, ditto, 16 inches (d), with glass outlet-cock and 
waste-cock at the top of one of the Limbs, and Platinum Electrodes sealed 
into one of the Limbs $4 0( 

3544. Hoffman s Lecture Eudiometer, mounted on stand, com 
plete . *I">-W 



OF CHEMICAL AND PHYSICAL APPARATUS. 



233 



HOFFMAN S APPARATUS. Continued. 

3545. Hoffman s Apparatus, for Recomposition of 
Water, consisting of three Eudiometers, mounted on stand, 
^,ach provided with a Delivery Cock of glass, ami two of them 
with cocks in the top *15 "<> 

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 






3550 



3554 



3556 



Nitrogen, consisting of a V-shaped Tube, with Platinum Electrodes, mounted 
on stand ................................. ......................... $6.00 

3547. Ditto, ditto, ditto, ditto, unmounted . . ....................... 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 
Hydro .r^n, unmounted ............................................ $3.00 

3549. Apparatus > for Demonstration of Oxygen, Hydrogen and Water, 
consisting of U Tube, mounted on Stand, supplied with Stop-cock Delivery 
ock and Glass Worm, complete ...... .................... ........ $15.00 

3550. Ditto, for ascertaining the exact proportions of Hydrogen and Ni 
trogen in Ammonia, unmounted ____ .......... .... .......... $3.00 

3551. Metallic Supports for the above, and other similar apparatus, 
each .......... ....... . ............................. .............. $4.00 

3552. Hoffman s Apparatus, for the Demonstration of Proportion, 
ate volumes of Water, Hydrochloric Acid :uul Ammonia, consisting of U Tube 
with Stop-cocks at top, Pinch-cock at bottom, with Platina Electrodes, mount 
ed on stand, No. 913 ............................. _ 



3553. Ditto, ditto, for the Determination of Chlorine Water, consisting of 
(I Tube, with fine ground glass Stopper at the top, and having also Platinum 
Electrodes on arm, No. 259, mounted ................... ........ $7.00 

3554. Ditto, ditto, for the Testing of Sulphuric Acid, consisting of a long 
glass vessel or bottle, into the neck of which is ground stoppered with line 
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 is firmly fixed by a cork into a strong cylindrical glass receptacle, hav 
ing a fiat bottom _____ ". ............................................... $7.50 

3555. Ditto, ditto, Four Burners, mounted on one stand, each Burner 
about 2 inches apart .................................................. $7.50 

1755. Hoffman s Watch Glass Clamps, each ............................ 20 

3556. 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 .............. $650 

3557. Ditto, ditto, ditto, mounted .............. .......... $10.00 

3558. Ditto, ditto, with Charcoal Points for fie Electrolysis of Hydro 
chloric Acid and Ammonia, mounted ................................. $15.00 



234 



E. B. BENJAMIN S DESCRIPTIVE CATALOGIE. 
HOFFMAN S APPARATUS. Continued. 




3559 

3559. Apparatus, for Volumetric Electrolysis of Carbonic Acid Gas, Wa 
ter and 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 largvglass 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 
of medium width, into which is secured a glass Stop-cock tube with a burner 
of Platinum Foil in the end. There is also a blowing tube, bent at right an 
gles, fitted into the same rubber stopper ............ ................. $10.00 

3561. Hoffman s Apparatus, for showing the principle of Carre s Ice 
Freezer, by producing ice from water by the employment of Ammonia. $ 1 5.0fr 



, 

3562. Ditto ditto, for the condensation of the Elementary Gases, Hydrogen 
and Oxygen, in water, at boiling temperature, as well as for Fudiometric An 
alysis of the Fire Dam]> and the oil forming gases (as per Hoffman s Modern 
Chemistry, Fourth Edition ; also per Records of the German Chemical Society,. 
2d Vol., p. 24.")), 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 moved up and down ......... $30.00 

3563. Ditto, ditto, for burning Sulphur by the Electric Current, demon 
strating equal volu es of Oxygen and Caibonio Arid 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 t \vo-holed cork, and provided with a Waste- 
cock. In each hole in the cork is a wire fastened, one of which is provided 
\vi:h it small spoon to receive Carbon, or Sulphur The upper ends of the 
wire, are supplied with Binding Screws. (See illustration, p. 23(1 ) ...... $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 Hoffman s introduction to his work on Modern Chemistry, arid 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 OL a fork 
and supplied with glass cocks. The apparatus is carefullv held in place by a 
uicely constructed support, which sustains four glass cylinders, fastened in 



OF CHEMICAL AND PHYSICAL 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 
a metal pipe $50.00 




3562 



3:,G4 



3565. Hoffman s Steam-Tight Determination Apparatus f 

consisting of a Barometer Tube, I Muter 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 name of 3 tubes. Out of 
the lower end of the encasing tube runs a tube 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, 
the volume by the pressure of the quicksilver. 



showing 



3566. Murrle >t* Distilling Apparatus. (Sre ///., 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. 




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 6 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; I 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-corks <ii the Steampipc;3 Dogshead Stop-cocks for the Steam- 
boiler; Drying CHNO; Cooling Tub; Steam-boiler Plate (2 entire) ; Pedestal 
for the Cooler; Board for the Drying Case; J Props for ditto; Fish-bellied 
Roast, etc., etc. 



OF CHEMICAL AXD PHYSICAL APPARATUS. 



MURRLE S DISTILLING APPARATUS, imported only 
to order. (For description, see pp. 235, *3G.) 







3566 

3567. Distilling Apparatus, with Adjuncts, according- to Dr. Mohr, 
consisting of: 1 Distilling Alembic of 2 gals. ; Water Jacket, Steam-pipe T 
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 oz. ; ] ditto, of 
Emiliau shape, of 24 oz. ; 2 Faucets ; Steam-pipe, with Intermediary Stop 
cocks from the Cap into the Steam-pipe which 
conducts the distilled water into the Cooler; 
Casseroles, with cover, 3 qts. ; ditto, of Emi- 
lian, of 2 qts.; 2 Intermediary Stop-cocks; 2 
Dogshead Stop-cocks on the Steam-boiler and. 





3567 



3568 



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.; 2 level Tubes with Funnel; Glass Water Gauge ; 
Cap of one of the Evaporating Dishes ; Front Plate ; Covering Plate ; Side 
Frame; Hot-air Passage; Fish-bellied Roast; Iron Steam-boiler Plate; Lit 
tle King Plates on the Cap ; Wooden Pedestal ; Knob, Feet and Binding of the 
Crank Hands ; Brush, Plaster Model, etc. 



238 E. u. BENJAMIN S DESCRIPTIVE CATALOGUE 

356. Distilling Apparatus, Dr. Molir s, together with 1 Dry 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 oz. ; 1 ditto, of 12 oz. ; I ditto, Emiliau, of 24 
oz. ; 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 \-> qts.; 2 Level Tubes, with Funnel; Glass Water Gauge; 
Cap of one of the Casseroles ; Steam Drying Box, with two compartments 
Avith 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, etc. 

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 I 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, 
condi 

2 Intermediary Stop-cocks; 2 Dogshead Stop-cocks on Steam-boiler and Cool 
ing Tub; little Stop-cock on Cap; Brass Conductors, hermetically scaled; 
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. 

Iii 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 . . $.30.00 

2410. Gasometer, Bimseii s, Mercurial Graduated Millimeters 2 75 

2888. Gas Photometer, Bunseu s, 5 feet long, carefully registered scale with 
sliding and reflecting screen, complete, as used in the University of Heidelberg, 
with gauge . $30.00 

2411. Gas Meter, with Exposed Indices, showing tens, hundreds, and thou 
sands Pressure Indicator Regulator, and Delivery Jet $50.00 

2889. Gas Regulation Burner 5.00 

3572. Ditto, Regulator, Kemp s, ordinary 3.50 

2413. Ditto, Avith 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 l-?5 

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 Tnbefi, 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, 
Woulfl s Bottle, Gallows Screw Connector, fitted with Mouth-piece and Stop 
cock, bent Tube with Connector, Pint Retort and Receiver, and Lamp Stand 
of iron $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 both sides - $2.50 

3577. Ditto, for generating Chlorine Gas, consisting of Lamp, Pneumatic 
Cistern, Iron Stand, Flask, Sand Bath, etc $10.00 

357. Ditto, Deflagrating, for making Anhydrous Phosphoric Acid by 
burning Phosphorus in Oxygen - $3.50 

3579. Ditto, consisting of Carboys of Earthenware, with Filter for gener 
ating Chlorine. 



OF CHEMICAL AND PHYSICAL APPAKATUS. 239 

35 8O. Apparatus for preparing Nitrogen by burning Phosphorus in air, $3.50 

3581. Ditto, to illustrate the Diffusion of Gas 2.00 

2189. Ditto, for showing Endosmosis 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 
India Rubber Connection $2.50 

3583. Ditto, for making Chloride of Sulphur, consisting of two tubu 
lated Receivers, Chloride of Calcium Tube, Bulb Tube, Gas Flask, etc., 
after Mitscherlich $7.00 

354. Ditto, Mohr s Ether Extraction $8.00 

(See also list of Hoffman s Apparatus.) 

3585. Ditto, Buusen s, for obtaining pure Hydrogen Gas 6.50 





3585 3586 

3586. Ditto, ditto, for obtaining pure Oxhydrogen by the Decomposition 

of Water $6.50 

2419. Porcelain Apparatus, for Washing Gases, consisting of two deep Porce 
lain Dishes, fitting into each other with concentric Chambers, Receiver and 

Vent .. $5.00 

3463. WoulfPs Apparatus, for Washing Gases, 8 oz 5.50 

" Ditto, ditto, ditto, ditto, ditto, pints 7.00 

" Ditto, ditto, ditto, ditto, ditto, quarts 8.00 

1602. Lamps, suitable for the above, each 1.25 

3239. Iron Support for ditto , 1.50 

1731. Apparatus, for Generating Chlorine, Safety Funnel and Delivery 

Tube, Quart Flask . $1.35 

2396, 97. Ditto, for Sulphurreted Hydrogen, large size, 2 Bulbs, Kipp s, 

$6.00 to 7.50 

2401. Ditto, ditto, smaller, Babo s $1.00 

21 94. 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 
ratus 75 

3406. Bottles for Washing Precipitates, Faraday s pints 

" Ditto, ditto, ditto, ditto, quarts 75 

2233. Evolution Flask, complete $1.25 

Gas Bottles, with Receiving and Delivery Tube 75 

2402. Hydrogen Generators $5.00 to 40.00 

2405. Oxygen ditto, quarts $4 .50 

" Ditto, ditto, | gal 6.00 

2407. Pepy s Gas Holder, of Copper, 10 gals 27.50 

" Ditto, ditto, ditto, ditto, 15 gals 37.50 

2406. Ditto, ditto, Japanned Zinc, 10 gals 22.50 

" Ditto, ditto, ditto, ditto, 15 gals 27.50 



240 



E. B. BENJAMINS DESCRIPTIVE CATALOGUE 



o s 2 * ? c : < 



55.. 5? ?T.2 9.E* 




OF CHEMICAL AND PHYSICAL APPARATUS. 241 

APPARATUS FOR HEAT. 

3587. Apparatus, for showing Specific Heat $5.00 

1828. Conduct imeter 2.50 

3588., Apparatus to show Spheroidal State of Liquids, as per No. 52 of Tyn- 
dall, on Hea t $2.00 

3589. Trevelyan Rocker, according to Tyndall, Fig. 27 6.00 

3590. Straight Roller, Electrical, according to Tyndall, Fig. 30 8.00 

3591. Elliptical Roller, according to Tyndall, Fig. 31 10.00 

3592. Apparatus, to show Influence of Pressure at Boiling Point, Fig. 
35 $8.00 

3593. Ditto, showing Development of Heat by Compression of Air, Fig. 13, 

$4.00 

1779. Bnnsen sFurnace, for Organic Combustion, imported, 25 Burners. 60.00 
1780. Ditto, domestic, <J5 Burners 50.00 

3594. Ditto, 18 Burners 40.00 

1781. Ditto, 10 Burners 30.00 

3595. Sefstrom s Chemist s Forge, imported to order 175.00 

1476. Blow-table and Blast-pipes 40.00 

1778. Liebig s Combination Furnace, 24 in., $3.25 ; 18 in 2.25 

1809. Ditto, Condensers, Glass, small 1.00 

1811. Ditto, ditto, Japanned Tin.,. 3.50 

181-2. Ditto, ditto, Brass, soldered 6.50 

18l:i. Ditto, ditto, ditto, brazed 10.00 




3599 3603 3605 

3596. Carre s Ice Freezer, imported to order 150.00* 

2992. Pulse Glasses, carefully packed in pasteboard case, each 50- 

21 90. Eolipile, or Ether Jet 50 

3597. Parabolic Reflectors, with Iron Balls, Support and Stand of Brass, 
10 in $12.00 

2878. Ditto, ditto, ditto, ditto, 13 in 16.00 

" Ditto, ditto, ditto, ditto, 15 in 25.00- 

2879. Ditto, ditto, ditto, ditto, nickelized, 10 in 15.00 

" Ditto, ditto, ditto, ditto, ditto, 13 in 19.00- 

" Ditto, ditto, ditto, ditto, ditto, 15 in 28.00 

The Nickelized Reflectors are not easily corroded, and retain their polish. 

2529. Psychrometer, August s, wet and dry bulb, mounted $12.00 

3304. Differential Thermometers, Leslie s, each 2.50 

3598. Radiator, Leslie s, each 250 

3004. Pyrometer, Three Metals, ordinary 6.00^ 

3005. Ditto, ditto, ditto, extra fine, with Brass Revolving Alcohol Holder. 

$12.00- 

3599. Brass Ball and Gauge Ring, wooden handle, showing Expansion and 
Contraction, per pair $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 

Fluids $2.50 

2268. Glass Fire Syriuge, with Tinder, 10 in. long 8.00 

1347. Flauieless Lamp 1.50 

1960. Davy s Safety Lamp, for Miners, etc 7.50 

2422. Wire Gauze, in frame 75 

1 912. Cryophorus, Wollaston s, double bulb 2.00 

1913. Ditto, ditto, single bulb 1.75 

2527, 28. Hygrometers, Saussure s $4.00, 8.00 and 12.00 

2526. Ditto, Mason s 4.50 

3306. Maximum and Minimum Thermometers 4.00 

331 0. Metallic Thermometers, Watch Form 20.00 

1290. Air ditto .25 

3415. Water Hammers 75 

2563. Brass Jets, for Burning Gases 50 

2564. Ditto, ditto, ditto, with Stop-cock and Flat Tip 2.00 

1791. Combustion Tubes 40 to .50 

3306. Day and Night Thermometers 4.00 

1477, 79, 80, 81. Oxhydrogen Jets $4.00, 10.00, 15.00 and 20.00 each. 

1649. Candle Bombs, per doz 30 

3600. Hygrodeik, Edson s, for ascertaining the sensible Temperature due 
to Evaporation, the actual Humidity, Dew Point and absolute amount of 
Moisture $15.00 

APPARATUS for HYDRAULICS AND HYDROSTATICS. 

3601. Model of Forcing Pump, complete $20.00 

3254. Tantalus Cup 2.00 




2098 



31)06 



3619 



3629 



3602. Archimedes Screw 

3603. Equilibrium Tubes, a set of 6 3.50 

2098. Hiero s Fountain, of Glass 18.00 

3604. Barker s Mill, plain 6.00 

36O5 Ditto, ditto, with Stop-cock 10.00 

1 686. Hydrometer Jar, with Balloon Car 1.50 to 5. 00 

2524. Nicholson s Hydrometer 6.00 

36O6. Archimedes principle. Brass Cup and Cylinder 3.50 to 6 

2461, 2520 Hydrometers, various 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 AXD PHYSICAL APPARATUS. 



APPARATUS FOR HYDRAULICS AND HYDROSTATICS. Continued. 

1684. Cartesian Imps 20 to $1.50 

3247. Glass Syphons 50 to 1.50 

36O7. Wurtemberg Syphons 1.00 

36O. Diving Bell... 6.50 

2994. Forcing Pump, of Glass 1.50 

2993. Lifting Pump, of " 1.50 

1656. Capillary Tubes and Pan 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 
Screw is swiftly revolved, the machine will be propelled $10.00 

APPARATUS FOR MAGNETISM. 

3610. Electro Magnet 2.50 

361 1 . Ditto, ditto, on Stand, to lift Weights 16.00 

2126. Ditto, ditto, Revolving, Page s - 8.00 





3625a 




2624 



3632 



3612. 
3613. 
3614. 

3615. 



Circular Magnets, with Ring 4.75 

Helix on Stand 4.50 

Contracting Helix 6.00 

Voltaic Pistol 4.00 

2647. Horse-Shoe Magnets, 3 in 30 

Ditto, ditto, ditto, 3fciu 60 

" Ditto, ditto, ditto, 4 in 75 

" Ditto, ditto, ditto, 6 in 1-25 

" Ditto, ditto, ditto, 10 in 4.50 

Ditto, ditto, ditto, compound 4.00 



E. B. BENJAMIN S DESCRIPTIVE CATALOGUE 



APPARATUS FOR MAGNETISM. Continued. 

2646. Magnets, Single Bar .......................................... $1.00 

2649. Ditto, Pair, with Armature .................................... 3.50 

3616. Ditto, ditto, ditto, Wlieel Armature .......................... 3.25 

2650. 1800. Magnetic Needle, on Stand ... ..................... $1.75 to 2.50 

2651. Dipping Needle ............. .................................. 2.00 

3617. Adhesion Plates ............................................. 1.50 

3618. Lodestone, according to size ...................... 50 and upwards 

3619. Gassiot s Cascade ............. .............................. $2.50 

(See also Electricity, in regular Catalogue, under E.) 



APPARATUS FOR MECHANICS, Made only to Order. 

3620. Inertia Apparatus ....................................... $2.50 

1772 Collision Balls, Lignumvitse, set of 5 ........................... 3.50 

3621. Centre of Gravity, set of 8 ................................... 11.00 

3622. Leaning Tower ........... . ................................ 1.25 

3623. Whirling Table and Accessories ............................... 33.00 

3624 . Centrifugal Forces, per set ................................... 1 2.00 

3625 . Illustration of Weights and Pulleys .......................... 33.00 




3625 

3626. Screw on Mahogany Frame 6.00 

3627. SetsofSolids 5 -0 

3628. Dissected Cone 2.50 

3629. Gyroscope r 8 -^ 

3630. Atwood s Falling Machine $75.00 to 150.00 

3631. Apparatus, Brass, showing the principle of the Re verbal Ba l anc ^ 

3632. Inclined Plane 4 - 

OPTICAL APPARATUS. 

2168. Duboscq s Electric ^amp 

2169. Serrin s, ditto, litto 

2640. Magic Lantern, German -- 

2639. Ditto, ditto French, each $6.00, 10.00 and 25.00 



OF CHEMICAL. AXJ) PHYSICAL APPARATUS. 345 

OPTICAL APPARATUS. Continued. 

. Illustrations oil Glass, for Magic Lanterns (Fancy Illustrations), 
l>er set $5.00 to 1000 

3634. Electric Lamp, by clock-work, made to order $150.00 

3635. Ditto, Lantern 50.00 

21)07. Magnesium ditto 25.00 

2608, 26 1 2. Oxliy drogen Calcium Liglit $7.50 to 25.00 

26 1 3. Carbon Points, mounted 20.00 

3636. Ditto, ditto, ditto, with Reflector.... 25.00 

3637. Ditto, ditto, ditto, in Lantern. 27.;"0 

363. Ditto, ditto, without Lenses and small Reflector 30.00 

1679. Ditto, Pencils, per inch OG 

3639. Spectroscopes, Duboscq n, imported to order 210.00 

3139. Ditto, Browning s, 2 Prisms 1GO.OO 

3138. Ditto, Heildelberg, single Prism, with 2 Lamps, 2 Holders, 12 Platiiia 

Ends $G5.00 

3136, 37. Ditto, Browning s, Hand $15.00 to 1 8.00 

1728. Charts, shoAving the Spectra of Metals and Stars, translated into 

English, each $3 50 

3257. Merk s Telescope, Higli Power, with Strap for mounting on Stand. 

$30.00 

2681. Gundlach s Microscope, 2 Eye-pieces, 5 Objectives, with Slides, etc., 
all in an elegant, highly polished case; a very superior article, complete 

$200.00 

2680. Nacht s Compound Microscope, French 20.00 

2678. Ditto, ditto, ditto, ditto 15.00 

2682. Accurate Solar Microscope, complete, in line box, hinged Cover, etc. 

$200.00 

1768. Collection of Rare Specimens, for Spectral Analysis, with Platinum 
Wires on Glass Foot, and Stands to hold them, with Sliding Box $7.50 

2630. Watchmakers Lenses 2.50 

1769. Collection of Objects, for Solar Microscope, mounted 25.00 

1871. Microscopic Covers, Circles, very thin, per ounce 4.00 

1872. Ditto, ditto, Squares, per ounce ! 3.00 

2687. Ditto, Slides, assorted, per doz 50 

2629. Camera Lens, or Asplanat, by Sreinheil 30.00 

2976. Set of 3 Hollow Prisms, mounted on Stand 30.00 

3640. Ditto, Acromatic ditto, ditto, ditto 30.00 

3641. Single Rectangular, ditto, ditto 16.00 

2973. Bottle Prisms $6.00 to 12.00 

2988. Equilateral ditto, 35x33 N. Y. in., each 5.00 

2983. Acromatic ditto, 30x27 N. Y. in., per pair 5.00 

2984. Ditto, ditto, 35x32 N. Y. in., per pair 6.00 

2985. Ditto, ditto, 40x36 N. Y. in 7.25 

2986. Ditto, ditto, 45x45 N. Y. in 9.00 

2981. Prisms, for Dark Chambers, 15 Lines, each 2.00 

2982. Ditto, ditto, ditto, ditto, 21 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, Mitsclierlich s, with Extra Tube 60.00 

3642. Model of the Human Eye,, showing the Motion 2.50 

2234. Eye Model, showing the Reflection on the Eve Lens, with the use of 

Spectacles $15.00 

2621. Magnifying Lenses, for Assayers 2.50 

2631. Set oi Glass Lenses, 6, for Demonstrations 2.50 

3643. Mirrors, Convex and Concave 2.75 

2632. Apparatus, for Detraction of Light 7.50 

2810. Ditto, for showing Monochromatic Light, 5 Burners 12.00 

3J09. Ditto, Hoffman s, for Inverting the Soda Flame $3.00 to 3.50 

3644. Ditto, for showing the Oxidation of the Soda Flame 2.00 

3645. Ditto, Hoffman s Flame Apparatus, with Argand Burner 5.00 

2622. Lenses, Coddington 2 25 to 2.50 

2623. 24, 25. Ditto, Stanhope, German Silver 2.00 to 3.50 



24:6 E. B. BENJAMIN S DESCRIPTIVE CATALOGUE. 

OPTICAL APPARATUS. Continued. 
2526. Loups, single, 9 lines, .75; 11 lines, $1.00. 

2627. Ditto, double $1 .25 to 1 .50 

2628. Ditto, triple 1.50 to 1.75 

2633. Apparatus, for the Recoinposition of Light 2.50 

2676. Microscopes, No. 1, Universal Joint 7.50 

2677. Ditto, No. 3 * 10 00 

2678. Ditto, No. 4 15.00 

2679. Ditto, No. 1, in two columns, etc 25.00 

3144, 45. Lantern, Browning s, for projecting Spectra on the Screen. 

$50.00 to 150.00 

APPARATUS FOR ORGANIC ANALYSIS. 

2948. Air Pump Plate, 7| in $25.00 

1362. Aspirator, the same as used in Apparatus 1332, on p. 15.. .1.50 to 2.50 

1360 to 1362. Aspirator, glass 2.00 to 3.00 

1365. Aspirator Tubes 50 

3646. Complete set of Apparatus for Organic Analysis, according to 
Liebig $45.00 

1714 to 1720. Chloride of Calcium Tubes 15 to .60 

1776. Combustion Boats, porcelain 20 to .50 

2926. Ditto, ditto, Platimi in, per grain 03 

237 n. Ditto, Furnaces, Bimsen s gas 60.00 

1780. Ditto, ditto, American gas 50.00 

1781. Ditto, ditto, French gas 30.00 

1782 to 178B. Ditto, ditto, to be used with Kerosene 12.00 to 40.00 

1777. Ditto, ditto, Storer s 1.50 

1778. Ditto, ditto, Liebig s Charcoal 2.50 to 3.00 

1789. Ditto, ditto, Foil, of Copper, per ounce .05 

1791. Combustion Tubing ^0 to .50 

1792. Ditto, ditto, for Nitrogen determination 35 to .45 

Copper Turnings (see Chemicals), per Ib 1.00 

2423. Ditto, Gauze, per sq. ft 85 

2050. Drying Baths 2.50 

2061, 62. Drying Tubes, Liebig s 50 to .60 

2343. Filling Tubes 50 

2417, 18. 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, i in. bore, per ft 10 

2664. Mercury Jar, of glass 1.00 to 2.00 

2670. Ditto, trough, Porcelain, to hold 5 Ibs. of Mercury 1.00 

2671. Ditto, ditto, ditto, 16 Ibs. ditto 2.00 

2853. Nitrogen Bulbs, Horsford s 75 

3647. Ditto. ditto : Simpson s , 1.00 

2968. Potash Bulbs, Geisler s or Mohr s 1.00 

2966. Ditto, ditto, Liebig s 75 

2969. Ditto, Pipettes 50 

2343. Suction Tubes 50 

3239. Wood Supports 1.50 



CHEMICALS. 



Black Oxide of Copper. 
Chromate of Lead, pure fused 
Soda Lime. 

Bichromate of Potash, cryst. 
Caustic Potash. 



Chloride of Calcium, fused. 
Chlorate of Potash, cryst. 
Copper, in fine strips. 
Ditto, Turnings. 
Asbestos, long fibre. 



Chloride of Calcium, crude, dry. 

APPARATUS FOR PNEUMATICS. 

2946. Air Pumps, large and powerful $100.00 

2951. Ditto, ditto, Mischterlich s 10.00 

2950. Ditto, ditto, ditto, mounted 15.00 



01- CllhMlJJAL AND PHYSICAL APPARATUS. 



24? 



APPARATUS FOR PNEUMATICS. Continued. 

2952. Air Pumps, Liebig s, Brass Cock $15.00 

2948. Ditto, ditto, with Plate and strong Clamp to attach to a Table in 
place of Mahogany base $20.00 




1.00, 1 
1.00, 1 



2948 

2948. Air Pumps, mounted on a line polished Mahogany base, with heavy 
ground glass Plate $25.00 

The more costly grades of Air Pumps can be furnished, when desired, of 
first-class workmanship. 

1443. Swelled Glass Receivers, with knob, gal. $1.50, 1 gal. 2.00, 2 gal. 3.00 

1444. Ditto, ditto, ditto, open tops, \ " 1.75,1 " 2.50,2 " 3.50 
1449. Plain ditto, ditto, quarts, 75 cts , i " 

1446. Ditto, ditto, ditto, tall, with knobs, " 75 " \ " 

1442. Ditto, ditto, ditto, flat, ditto, 6 in. $1.25, 8 in. 1.75 

364. Receiver, with sliding Rod, Hook and Ball 5.00 

Ditto, the Cap and Stop-cock fitted, extra 2.00 

3416. Water Hammer 1.00 

2555. Bladder and Hand Glass 75 to 1.25 

3649. Magdeburg Hemispheres $7.00 to 10.00 

3650. Bolt Head Experiments 4.00 

3651. Mercury Shower 3.00 

1289. Air Balloons, glass, for weighing Air, 1 gal 1 .00 

1405. Ditto, ditto, rubber and Gold 
beater s, 2 gal $1.50 to 5.00 

Ditto, ditto. See Balloons. 
3338. Torricellian Experiments. $4.50 

3652. Guinea and Feather Tube, 

$8.00 to 10.0 i 

3653. Bell, in Vacuo 4.0 > 

1684. Cartesian Imps, singly, from 

.25 to 1.00 

1686. Ditto, ditto, in Bottles, from 
$1 50 to 175 

3654. Model, Hydrostatic Press, 

$20.00 

2459. Hydroclyse, or Forcing Pu p, 
producing a constant stream of Avater, 
enclosed in a fine polished Velvet-lined 3n4i> 3652 
Case.. $4.00 





E. B. 

APPARATUS FOR PNEUMATICS. Continued. 

2460. The foregoing can also be used as a Syringe, supplied with Male aud 
Fttinalti Joints, in line polished. Velvei -lined Cases ...................... $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 ......................... - ............... $10.00 

3636. Apparatus, for upward aud downward Pressure ............... 14.0< ) 

3657. Barometer Apparatus ........................................ 6.00 

1822. Apparatus for Air Cylinder .................................... 12.00 

2316. Freezing Apparatus .................................... $3.50 to 6 00 

1912. Cryophorous .................................................. 2.00 

1 648. Bursting Squares, per doz ...................................... 2.50 

365. Apparatus, for illustration of Marriotte s Laws ................ 10.00 

2904. Bubble Pipe, for Gas..... ....................................... 75 

2313. Fountain, in Vacuo ........................................... 9.00 

2953, 54, 55. Pneumatic Trough, Japanned, 12 in. 3.00, 15 in. 3 50, 16 in. 4.50 

2956. Ditto, ditto, Glass, solid, 12x5 in ...................... 4.50 to 8.00 

Ditto, ditto, with Brass Sliding Shelf ........................... 1 .00 

2957. Ditto, Turning Corners, very stout, 12x6 in ..................... 7.00 

2958. Ditto, ditto, ditto, ditto, 14x7 in ................................ 8.50 

Ditto, ditto, Porcelain, for use with Mercury. See Mercury Troughs. 
J441. Bee-Hive Shelves, Porcelain, small .............................. 25 

" Ditto, ditto, large .............................................. 75 

" Ditto, ditto, ditto, Earthen ...................................... 2> 

Fittiugs. See Stop-cocks, etc. 



APPARATUS, recommended by Dr. Scheibler and others, 
for the Analysis of SUGAR, SYRUPS, etc. 

1257. Apparatus for determining the quantity of Carbonic Acid in Bone 
Ash, accompanied with instructions, bottles, etc., corrected by Dr. Scheibler, 

$35.00 

12^9. Dr. Scheibler s New Apparatus, for Quantitative Volumetric Analysis 
of Carbonic Acid ....................... ................ 145.00 

1 313. Salleron s Alembic, for Testing the percentage of Alcohol in Saccharine 
Solutions ..... .............................................. $25.00 

1374. Balance for Specific Gravity, sensible to fa of a millogramine ---- 77.00 

1376. Ditto, ditto, for 200 grammes .......................... ---- 107.00 

1648a. Colorimeter, for the examination of Sugar and Syrups ......... 

1949. Mixing Cylinders ........................................ 1.30 to 4.50 

2044. Drying Baths ............................................... 15.00 

2205 to 2230. Evaporating Dishes ......................... 20 and upwards. 

2495 to 2499. Saccharometers ..... .............................. 75 to 2.50 

2500. Ditto, according to Dr. Scheibler ............................... 15.00 

2635. Centimeter bottles, stoppered .............................. 35 to 1 .60 

2636. Ditto, not stoppered ...................................... 25 to 1.00 

2637. Ditto, with two marks on the neck ........................ 60 to 1.25 

2692. Mixing Bottles ...................................... 2.50 to 3.50 

4 J9.">9. Saccharimeters, or Polarization Apparatus, Mitscherlich ....... 60.00 

i 960. Ditto, Wild s, in Mahogany Case .............................. 17^.00 

2961. Ditto, Soleil ................................................. l^O.OO 

i> J62. Ditto, Soleil-veutzke ......................................... 225.00 

APPARATUS FOR WATER ANALYSIS, ETC. 

366O. 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 .................... 6.50 

3663. Ditto, ditto, ditto, mounted ................. ............... 10.00 

3664. Ditto, for the Determination of Water and Carbonic Acid in the 
atmosphere, after Freseiiins ................ ......................... 12.00 

3665. Ditto, for the, Analysis of Mineral Waters, bv Fresenius ...... 10.00 



OF CHEMICAL AND PHYSICAL APPARATUS. 249 

APPARATUS FOR WATER ANALYSIS, ETC. Continued. 

2 443. Bunsen s Apparatus, for Rapid Filtration $11.00 

366<P. Ditto, set usually employed, including Flasks, Funnels, Mould 

Holder and Cone 18.00 

2-^4 7. Support of Japanned Tin for Bunsen s Apparatus 3.00 

3i252. Flasks, for Filtering, extra heavy glass, wide mouths, ] 6 oz 40 

" Ditto, ditto, ditto, ^4 oz 50 

" Ditto, ditto, ditto, 34 oz 60 

2319. Funnels, prepared expressly, and ground to an exact angle of 60 deg. 

on Moulds made for the purpose, 1^ in 15 

" Ditto, ditto, ditto, 2 in 20 

" Ditto, ditto, ditto, 3 in 30 

" Ditto, ditto, ditto, 4 in -- .40 

" Mould and Holder for preparing the Cone , 50 

i830. Platinum Cone, for Supporting the Filter, price according to weight, 
per grain, about 75 



VARIOUS FORMS OF APPARATUS, 



ACCOM PA XI ED WITH 



ACCUEATE 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 YALUE 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 

HEIGHTS. 

TROY. 

Millegramme = .0154 grs. 

Centigramme = .1543 

Decigramme = 1.5434 

Gramme 15.4340 Pounds. Ounces. Drachms. Grains. 

Decigramme = 154.3402 =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 cleg. 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. 



INDEX 



PAGE 

Absorptiometer, Buusen s 6 

Absorption Tubes 108 

Acetometers 6 

Acid Dishes 7-8 

" Funnels 96,97 

" " with stopcock 97 

" Jars 8 

" Measures 8, 9 

Acidimeter 6 

Adapters, various 9, 10 

Adhesion Plates 244 

Agate Centers 

" Burnishers 39 

" Mortars 134 

" Slabs 10 

Air Drying Baths 71 

" Furnaces 102 

" Globes 10 

" Pumps 143, 144 

Alcoholometers 10, 11 

Alembics, Glass 11 

" Porcelain 11 

" Salleron 12 

" Stoneware 12 

Alkalimeters 13 

Amalgam 187 

Aneroid Barometers 19 

Annealing Cups 14 

Anvils 14 

Aphlogistic Lamps 14 

Apparatus for Agricult. Chemistry, 220 
Arsenic detection .... 14 

Assay 225 

Barker s Chemistry. . 217 
Beginners in " . .214 
Blowpipe Analysis. . . 226 
" " ..227 
" qualitative. 228 
" quantitative. 229 
Bunsen s, for various pur 
poses 238 

" for Carbonic Acid deter 
minations, various . . 12, 13 
11 for Carbonic Acid deter 
minations, in bone black 7 
" " Chlorine Gas Genera 
ting 45, 46 

<l for a Course of Lectures. 217 



PAGB 

Apparatus for Decomposition of Wa 
ter 248 

" for Distilling Water, etc 69 

Miirrle s 237 

" " Electricity 73,75 

" " Electric Measurement, 83, 240 

" " Gas Analysis 238, 239 

" "Heat ../. 241 

" u Hinrich s Physics 229 

"Hoffman s Chemistry... 232 
" " Hydra nlics and Hydrosta 
tics 42 

" " Illustra ngMariott sLaw,248 
" " Influence of Pressure at 

Boiling Point 241 

" " Magnetism 243 

" " Mechanics 244 

" " Medical Tests 222 

" "Miners and Engineers.. .223 
" " Nitrogen, determination 

after Dumas 238 

" " Nitrogen, preparation by 

Chlorine and Ammonia .238 
" " Nitrous-oxide, prepara 
tion of 238 

" Optics 244 

" "Organic Analysis 246 

" " Oxydation of the Soda 

Flame 245 

" " Pneumatics 247 

" " showing the principle of 

the Ee verbal Balance. . .244 
" "Schools and Academies.. 215 
" showing the Spheroidal state 

of Liquids. 241 

" for Steele s Chemistry 216 

" " Stockhardt s Chemistry.. 224 
" " Students and Colleges.. .224 
" " Qualitative Chem 
ical sets... 221,231 
" " " Quantitative Chem 
ical sets 230 

" " Sugar and Syrup An lysis, 248 
" " Sulphur Determination by 

Chlorine 238 

" " Sulphuric Acid Manufac 
ture 9 

" " Upward and Downward 

Pressure.. ..248 



352 



INDEX. 



PAGE 
Apparatus for Urinary Deposits by 

Qualitative Analysis .. 221 
" " Urine Analysis, Flint s 

method 225 

" "Volumetric Analysis of 

Urine 221 

" " Volumetric Chemical An 
alysis 219 

" " Water Analysis 248 

" " Mineral Water Analysis . . 248 
" " Water and Carbonic Acid 

in the Air, determination 248 

" Wilson s Chemistry 216 

Archimedes Principle 242 

" Screw 242 

Argand Gas Burners 35 

" SpiritLamp 121 

Arsenic Plates 14 

" Tubes 15 

Aspirators 15 

Atomizers 15 

Atropia Bottles 15 

Atwood s Falling Machine 244 

August s Psychroineter 1 16 



Balances 16, 17 

Balling s Hydrometer 1 13 

Sacharometer 114 

Balloons 19 

Balloon and Jar 46 

Ball and Ring 241 

Barker s Chemistry, set 217 

Mill 242 

Barometers .... 19 

Barometer Apparatus 248 

Tubes 19 

Baskets, Lead 19 

" Straining 161. 

Baths, Drying 71 

Batteries, Electric 80 

Beakers 20,21,22 

Beale s Q nick Filter 22 

Beaume s Hydrometers 113 

Sacharometer 114 

Beaufay Crucibles 57 

Becker s Balances 16 

Weights 178 

Bee-hive Shelves 22 

Bells, Electric 76 

Bell Glasses 22, 23, 24 

Bell in Vacuo 39 

Bellows 24 

Berzelius Apparatus for Carbonic 

Acid determination 12 

Berzelius Beakers 21 

" Blowpipe 2.") 

" Filtering Paper 91 

Gas Bottle 105 

Bichromate Batteries 81 

Binding Clamps 24 

. " Screws 24 

Bink s Burettes... 33 



PAGK 

Biot s Hemisphere 76 

Black s Blowpipe 25 

Black Lead Crucibles 157 

Bladders 24 

Bladder and Hand Glass Ill 

" Pieces 24 

Blast Attachments for Blowpipe.. 24 

kt Burners, Gas . 3fi 

" Furnaces for Gas 100, 101 

" Lamps, Gas 37 

" Lamp, Alcohol 121 

Blood Circulating Apparatus 24 

Blowpipes 26 

Compound 25 

Oxhydric 25 

Blowpipe Apparatus 227 

" Flasks : 93 

" Tables 24 

Boards for pressing Gas-bags 104 

Boil ing Glass 148 

Bologna Flasks : 32 

Bolt Heads 27 

Bolt Head Experiments 39 

Borchard s Electric Machine 73 

Bottles, Acid 7 

" Chlorine 30 

" Cobalt 7 

" Colored 28 

" Ether 30 

" Gas 27 

" Packing, narrow and wide 

mouth 27 

" Glass stoppered, narrow 

mouth 29 

" Glass stoppered, with wide 

mouth 28 

" Reagent 29 

" Sample 28 

" Seperatory 30 

" Tubulated at Foot 30 

" with Vitrified Labels 29 

" Woulft s 31 

Bottle Brushes 33 

" Caps 31 

" Imps 31 

Boxes, Ivory 32 

" Boxwood. 32 

" Japanned 31 

" Pasteboard 32 

" Porcelain 32 

Bombs 32 

Bradley s Apparatus for Electric, 

Measurement 240 

Browning s Electric Lamp 63 

" Spectroscope 160 

Brushes, Acid 7 

Button 33 

" Camel s Hair 33 

" Test Tube 32 

Bubble Pipe 33 

Bulb Tubes 33 

Bullion Scales 18 

Bungs 33 



INDEX. 



PAGE 

Absorptiometer 6 

Absorption Tubes.. .108, 109 
Apparatus for obtaining 

pure Hydrogen Gas 239 

Apparatus for obtaining 

pure Ox hydrogen gas.. 239 
Apparatus for determina 
tion of Carbonic Acid.. 13 

Barometer 19 

Battery 80 

Burner Tips for flat flame, 39 

Blast Gas Lamp 36 

" Attachment 24 

" Blowpipe 26 

Burners 35 

Burner Jets 120 

Carbons 41 

Charts 45 

Chlorine Absorbing Ap 
paratus 46 

Clamp 24 

Eudiometer 85 

Gas Tubes 108, 109 

Gasometer, Mercurial .... 1 08 

Gas Regulator 108 

Hot Air Bath 72 

Meter for Gas 108 

Photometer 139 

Pinchcock 141 

Quick Filtering Appara 
tus 89 

" complete.. 249 

Burettes, Mohr s, Bink s, Gay Lus- 
sac s, Geissler s, Ramnielsburg s, 

Chameleon, etc 33, 34 

Burette Clamps 34 

" Floats 34 

" Tips 34 

Burners 35, 36, 37, 38 

Burner Attachments 36 

" Forks 38 

" Furnaces 39 

" Plates 39 

" Tips , 39 

" Tubes, flat ends 39 

Burnishers 39 

Bursting Squares 39 

c. 

Candlebombs 39 

Canules 40 

Caoutchouc Caps 39 

" Balls 39 

Capillary Plates 39 

" Tubes 40 

" Tubing 40 

Caps for Bell Jars, Gas Bags, etc.. 40 

" " Gallipots 40 

" Porcelain, for lamp chimney. 40 

Capsules .. 40 

ofHorn 40 

" of Iron 154 

" Mixing 129 



PAGE 

Capsules, Platinum 40 

" Porcelain 40 

" Silver 40 

Carbon Points 41 

Carbons 41 

Carbonic Acid, condensed 41 

Generator 41 

Carbon Cells 43 

Carboys 42 

Carre s Dielectric Machine 164 

" Air Pump 143 

" Ice Freezer 116 

" " " Wohler s 116- 

Car-ins Oven 103 

Carthesian Imps 42 

Cartier s Alcoholometers 11 

Casseroles 42 

Cassolettes 43 

Cat Skins 43 

Caustic Holders 43 

Cells, Porous 43 

Cen tre of Gravity 244 

Centimeter Measures 43 

Centrifugal Forces 244 

Chameleon Burettes 34 

Chamott Furnaces 99 

Chandler s qualitative chemical set,231 
quantitative " " 230 

Charcoal Borers 43 

Holders 43 

Pieces 4 > 

Saw 43 

Spatula 43 

Sticks 44 

Tongs 44 

Chardin s Filtering Paper 91 

Charts 46 

Chemicals, List of 101 

Chevalier Cremometer 57 

Chilton s Furnace 102 

Chimes 46,47 

Circular Magnets 243 

Chisels for Ingots 44 

Chloride of Calcium Jars 44 

" " " Tubes 44 

" " "with bulbs. 45 

Chlorine Bottles 30 

" Distilling Apparatus 46 

" Meter 46 

Gas Apparatus 46 

Clamps, Binding 24 

" Iron 47 

" Wooden 47 

" for Watch Glasses 47 

" " " Craig s 47 

" " Hoffman s .. 47 

" " " Mohr s.. ... 47 

Clark s Retort lf> 1 

Clay Cylinders 227 

Clips for Watch Glasses 47 

Cobalt Bottles 47 

" Glass Plates 49 

Coddiugton Lenses 124 



254 



INDEX. 



PAGE 

Coffee Machines, French 48 

" German 48 

Coils for Induction 78 

Colanders 161 

Collections of Apparatus 214 

" of Artificial Gems 48 

u of Crown Diamonds 48 

" of Crystalographic Models... 48 
" of Specimens for Spectral An 
alysis 48 

" of Nitrogen, Simpson s Appar 
atus for 49 

Collision Balls 49 

Collodion Balloons 19 

Colored Glasses 49 

" Glas^Plates 49 

Color Tests, on Porcelain slab 49 

Columbia College qualitative Blow 
pipe, set 228 

Columbia College quantitative.. .229 

Combustion Boats 49 

Bricks 51 

Foils, of Copper 51 

Furnace, Bunseii s Gas.. 49 
" Liebig s Charcoal.. 49 

" Storer sGas 49 

" French 50 

" for coal oil 50 

Supports 51 

Tubes 51 

Commutators or Current changes.. 51 

Compasses 52 

Compound Bar 52 

Blowpipe 25 

Condensers 52 

Condensing Tubes 53 

" Chamber ... 53 

" Cylinder 53 

" Pump 144 

Conduction of Heat downwards, 

Apparatus for 54 

Conductonieter 54 

Cone, Dissected 54 

" of Platinum 54 

Conical Beakers 22 

" Test Glasses 167 

Connecting Limbs 54 

" Tubes 54 

Connectors of Brass 54, 55 

Gallows Screw 55 

" of Rubber 55 

Cooper s Mercurial Gas Receiver.. 55 

Copper Foil 51 

Gauze 109 

Sheet 55 

Wire 179 

Water Baths 177 

Corks, Champagne 55 

Chemical > 55 

Rubber 153 

Teats 55 

Cork Borers 55 

" Files.. - 89 



PAGE 

Cork Knives 56 

" Pressers, of Iron 56 

" Pressers, of Steel 56 

Squeezers 56 

" Tonga 56 

Cotton Wick 124 

CoA r ers, Glass, convex 56 

" flat 56 

" square, ground 56 

" with hole in the side 

and center 56 

" with knob 57 

Microscopic sq rs and circles, 57 

Craig s Watch Glass Clamps 47 

Cremometer 57 

Crown Burner 38 

Crucibles, Assay 57 

Beaufay 57 

Berlin 58 

Biscuit Ware 59 

Cast Iron 58 

Covers 57 

Hessian or Sand 59 

Iron 57 

Metallurgists 59 

Meissen 58 

Platinum 59 

Plumbago 57 

Porcelain 59 

Roasting 60 

Silver 59 

Crucible Moulds 60 

" of Brass.... 136 

tf of Boxwood .136 

Supports 60 

Tongs 170 

Tubes for reduction 59 

Cryopherus 60 

Crystals, Models of 48 

Crystal Drainers 60 

Crystallizing Dishes 60 

" Kettle 120 

Cubic Centimeter Flasks 125 

Cupels 61 

Cupel Furnace 99 

" Holders 61 

" Moulds, of Brass . 61 

" " of Steel 61 

Cupping Glasses 61 

Cups, Annealing 61 

" Feeding 61 

" Medicine 61 

" Porous 43 

" Seidlitz Powder 61 

Cutting Pliers 62 

Cuvettes 62 

Cylinders, Glass 62 

Graduated Cubic inches 63 

" into " Centimeters. 63 

" " Grains 63 

" " Grammes 63 

for Electric Machine . . , . 64 



INDEX. 



255 



D. 



PAGE 



Dancing linages 76 

Dancing Plates j 76 

Daniel s Battery 80 

" Hygrometer 116 

Zincs 180 

Day and Night Thermometer 64 

Davy s Safety Lamp 64 

Decanting Jar 64 

" Syringes 64 

Tubes 64 

Decimal Scales, Centimeters 43 

Decoction Mortars 135 

Decomposition Water Apparatus.. 248 

Decrepitating Iron Spoon 159 

Deflagrating Cover 64 

" Cup 65 

" Globes 64 

" Hooks 64 

" Jars 23 

Spoons 64 

" Stands 64 

Taper Holder 65 

Dentists Furnace 100, 101 

Descroizille s Alkalinieter 13 I 

Dessicators 65 

Dessicating Apparatus 65 ! 

" Fresenius... 66] 

Baths 71 I 

" Ovens 72 

" Pans 65 

" Plates 66 

Dessicator, Oblong 65 

Porter s 65 

Schrotter s 65 

Dialysers 66 

Diamonds for Cutting Glass 66 

" " writing on " 66 

Diamond Jar 76 

" Models 48 

" Mortars 66 

Dielectric Machine 75 

Differential Thermometers, plain.. 66 
with stopcock 

connecting. 66 
Diffusion of Gases, Apparatus for. . 85 

Digesters, various 67 

Dippers 67 

Dipping Batteries 81 

Needles 67 

Dischargers, Electrical various. ... 76 

Dishes, Draining 68 

" Earthern 67 

" Iron 67 

" Porcelain 67 

" Roasting 68 

Displacement, Apparatus 68, 69 

Dissected Cone 244 

Distilling Apparatus 69 

" " Miirrle 237 

" Iron 6 J 

" " Wurtz 70 

" Flasks 60 



PAOK 

Distilling Retorts, Copper 152 

" " Glass 151 

" Iron .152 

" " Lead 152 

" " Stone Ware.... 152 

Diving Bell 243 

Do3bereiner s Hydrogen Lamp ..... 70 

Dome, Porcelain 70 

" Sheetlron 70 

Douceleur Apparatus 244 

Drainers 60 

Drawing Curves 71 

" Protractors 71 

Drawing Tools 70 

Propping Bottles 7 

Flasks 71 

" Pipettes 71 

" Tubes 71 

Druggist Mill 72 

Drummond Lamps for Petroleum.. 71 

" Gas 123 

Drying Apparatus 65 

" Baths, Copper. 71 

" Porcelain Regulator 71 
" Electrical Regulator 72 

" Bottles 72 

Oven 72 

" Rammelsburg s 72 

Plates 72 

Tubes 72 

" Liebig s 72 

il Mitscherlisch 72 

Duboscq s Lamp 82 

Spectroscope 245 

Dutch Metal 72 

Dyer s Cloth 72 

Dye Pots 42 

E. 

Earthern Dishes 67 

Edson s Hygrodeik 242 

Electrical Apparatus 73 

Batteries 82, 80 

Bells 76 

Cylinders 64 

Egg Stand 76 

Flier 76 

Lamps 82 

Machines 74 

Orrery 77 

Plates 76 

Pistol 77 

Roller ?41 

Sportsman 77 

Stool 76 

Tubes 78 

Vacuum Tubes 79 

Electric Fire Damp Indicator Ill 

" Measurement Apparatus .. 240 

" Telegraph 78 

Electro Magnet on stand to lift 

Heavy Weights 243 

Electro Magnet, Page s 78 



INDK.Y. 



PAGE 

Electrometer Gold Leaf 75 

Jar 76 

Pith Ball 75 

(t Thompson s, for Elec 
tric Measurement . . 83 

Electropliorus .7. 

Elliptical Roller . 24 1 

Elutriating Apparatus 83 

Euamel . 84 

Enamelers File 85 

Knife 85 

Plates 85 

Endosmosis 85 

Eolipile of Glass 85 

Lamp, Brass 85 

Tin 85 

Eprouvettes 1 67 

Equilibrium Tubes 242 

Erdmann s Apparatus for the de 
termination of Carbonic Acid 13 

Erdmaun s Float 34 

Erlenmeyer s Oven 103 

Ettlmg s Pipette 141 

Ether Bottles 30 

" Distilling Apparatus 85 

" Extraction Apparatus, Bo 
hemian 85 

Ether Extr tion Apparatus, Mohr s 139 

" Jet 85 

Eudiometers, Bunsen s 85 

Eudiometer, Hoffman s 86 

Ures 86 | 

Evaporating Dishes, Glass 87 

Iron 87 

Platinum 87 

Porcelain.. . 87 

Silver 87 

Berlin 87 

French 88 

Meissen 87 

Tlmringian .. 88 
Gold Washing 88 

Kettles 89 

Eye Baths 89 

" Models 89 

Evolution Flask 89 

Exsiccators 5 

F. 

Faraday s Jets 120 

" " Retorts 151 

Washing Bottles 177 

Files, Enamelers 89 

" Cork 89 

File Handles 89 

Filling Tubes 93 

Filtering Apparatus, Beale s 89 

" " Bunsen s .... 89 

" " Copper 89 

" " Plantamour s 89 

" Porcelain 89 

Filtering Apparatus, Bell, Glass and 
Slab. 90 



Filter, Calico 90 

" Covers 56 

" Dryer 91 

" Holder 91 

" Hooks 91 

Rings 91 

Stands 164 

Filtering Flasks 91 

Filters, Felt 91 

French Grey 91 

44 White 91 

Filtering Paper, Cliardin 91 

"" French 91 

" " German 92 

" " Swedish 92 

Finger Tips, Rubber 92 

Fire Clay 92 

" Damp Indicator 118 

" Safety Lamps 64 

" Syringe..... 1 92 

Fittings, Various 92 

Flaineless Lamp 14 

Flasks, Bohemian 92 

" Bologuia 93 

" Florence 95 

" with tubulature on the neck 93 
" " " u bulb 93 

" Copper /. 94 

" Iron 94 

" Gas 3* 

" Litre 125 

" Oxygen 107 

Flints Urine Analysis Apparatus 

for 225 

Float, Erdmann s 34 

Florence Flasks 93 

Florentine Receivers 150^ 

Foil Copper 51 

" Platinum 143- 

Foot, Hares 227 

Forceps, Brass 94 

" Bending 95 

" Cutting 95 

Jewelers 94 

" Steel 94 

Stubbs 94 

" German Silver 95 

" Wire 95 

Forks for Gas Burners 38 

Fossils 213 

Fountain in Vacuo 95 

Formation of Water in Vacuo 95 

Fractional Distillation of Water.. 70 

Frames 95 

Freiburg Hammers Ill 

Freezing in Vacuo 95 

Fresenius Acidimeter 6 

Arsenic Detection 14 

" Apparatus for Carbonic 

Acid in Carbonates 12 

Fresenius Chlorine Distillation... 46 
" Dessicating Apparatus. . 66 
" Hot Air Bath.. . . . 73 



IKDEX. 



25? 



PAGE 

Fresenius Filter Support 164 

Funnels 96 

Bohemian 96 

Quick Filtering, Bunsen s- 96 

Filling 98 

Fluted 96 

German 96 

Porcelain Safety 98 

" Perforated 98 

Retort 96 

" Percolating 98 

Gutta Percha 99 

Gutta Percha. Conical 99 

Gutta Percha, Spherical.. 99 

Plattner s 227 

Separating Conical. 97 

Globe Shape... 97 



Fui nel Tubes, Conical 

Thistle Top 

Welter s Safety 



97 
97 
97 
98 
98 
164 
99 
99 



" Mitscherlisch . . 

Supports 

Firn ices, Erdmann s 

Porcelain 

for Gas 16 1 

" Kerosene <. 161 

Clay 99 

Chrtmott 99 

Cupelling 99 

Hibbs 100 

French Crown 101 

Kent 99 

Griffin s 101 

Perrot 100 

Chilton s 102 

Enamellers 102 

Lead Basin 102 

Carius 103 

Erlenraeyer 103 

Bunsen s 103 

Combustion 103 

G. 

Galactometer . . .-. 103 

Gallipots 104 

Galvanometers, Astatic 77 

Sensitive 77 

<l Tangent 77 

Galvanic Batteries 80 

" Decomposing Cell, Bun- 
sen s. 239 

Galvanic Decomposing Cells, Hoff 
mann s 233 

Gas Analysis Apparatus 238 

" Bags 104 

Bottles 27 

" 105 

Blowpipes 25 

Blow tables 24 

Burners 37 

Flasks 94 

" J urnaces .. . . .. 101 



PAGE 

Gas Generator, Kipp s 106 

" Hydrogen Generator, Copper.. 106 

" Glass.... 107 

" Sulphuretted Generator.. 106, 107 

" Oxygen " 107 

" Globes 64 

" Holders, Pepy s of Zinc 107 

Copper 107 

" for Oxygen ami Hydro 
gen 108 

Gas Jars 23 

" Jets 119 

" Meter 108 

Gasometer, Buuseu s Mercurial 108 

Gas Regulation Burner 108 

" Regulator 108 

" Pistols 108 

" Pipettes 108 

" Pipette, Ettlings 108 

Gassiot Cascade.... 244 

Gas Tubes.... 108 

Gas, Washing Apparatus 109 

Gasogenes 109 

Gauge Tubes 109 

Gauge Ring and Ball 211 

Gay Lussac Alcoholometer 11 

" Alkalimeter 13 

" Burettes 33 

" Supports 165 

Geissler Burettes 33, 34 

Tubes 78,79 

* Apparatus for the deter 
mination of Carbonic Acid 12 

Geissler Potash Bulbs 147 

" Glass Stopcock 160 

Geological Hammer Ill 

Specimens 206 

Gibbs Thermometer Tubes 173 

Glass Blowpipes 25 

Blowers Table 109 

Condensers 52 

ends for Burettes 109 

Pieces 110 

Plates, ground 109 J 

" " 1 inch thick.... 109 

" Colored 109 

Rods 110 

Shades HQ 

Stirrers 160 

Tubing 174 

Globes of Glass for Deflagrating. ..64 

Gloves. Rubber HO 

Goniometers, Hauy s 110 

German 1 10 

Wollaston s 110 

Graduate Glasses HO 

Graduates, Glass Minims, English. 110 
" German. Ill 

English shape Hi 

French shape Hi 

Tumbler shape Ill 

Graduated Apparatus, 13, 33, 34, 63,64, 
85. 8t>, 108, 125, l-. 9, 141, etc. 



258 



PAGE 

Graduates, Porcelain Ill 

Grain Weights 179 

Gramme Weights 179 

Griffin s Blast Gas Burner 87 

" Furnace 101 

" Beakers 22 

Grove s Battery 80 

" Ziucs 180 

Guinea and Feather Tube 247 

Guibourg s Displacement Apparatus 69 

Gundlach s Microscope 128 

Gutta Percha Funnels 99 

Measures 127 

Gyroscopes 244 

H. 

Hammers Ill 

Blowpipe Ill 

Geological Ill 

Mineralogical Ill 

Planner s Ill 

Watchmakers Ill 

Water 177 

Handles Ill 

Hand Glass Ill 

Harcourt s Ivory Scale 1 16 

Hardness of Mineral Tests 211 

Hare s Gallows Sere w Connector .. 55 

Hauys Goniometers 110 

Head of Hair ?."> 

Heat, Apparatus for.. 241 

Helix Contracting 77 

" on Stand 77 

" with ring armature 77 

Hemisphere, Biot s 76 

" Magdeburg 247 

Hessian Crucibles 09 

Hibbs Furnace 100 

" Muffles 136 

Hiero s Fountain 76 

Hinrich s Physics 229 

Hoffman s Apparatus, various, 232, 233, 

234, 235 

Hoffman s Supports 164 

" Watch Glass Clamps 47 

Holders for Flasks 1 64 

Flame Apparatus 245 

Holders for Burettes 162, 163 

" for Caustic 112 

" for Crucibles 164 

11 for Funnels 164 

" for Platinum Spoons and 

Wire 112 

Holders for Pipettes 163 

" Mitscherlisch s 164 

" Retort 165 

Test Tube 164 

" for Salts in Lamp Flames. 159 

Holsteric Barometer 112 

Holtz s Electric Machine 73 

Hot Water Funnel 89 

Hooks Deflagrating 61 



PAGK 

Hydroclese \\:> 

Hydraulics, Apparatus for 242 

Hydrogen Generator 107 

Pistol 108 

Gas Holders 108 

11 Gas, Buiisen s Apparatus for 239 

" Gas Lamps 70 

Hydrometers 113. 114, 115 

Hydrometer Jars 115. 117, 118 

j Hydrometer, Nicholson s 1 15 

, Hydrostatic Balance 248 

Press 247 

Hygrodeik, Edson s 242 

Hygrometers, August s Psychrom r 116 

" Daniel s 116 

Mason s 116 

Saussure s ... ..116 



Ice Freezer, Carre s 116 

" Hoffman s 116 

Ignition Tubes 1 16 

Illustration of Weights and Pulleys 244 

Imps 31 

Inclined Plane 244 

Indicator of Fire Damp lib 

Induction Coils 78 

Indigo Prism 147 

Inertia Apparatus 244 

Infusion Jars 118 

Inorganic Chemistry Apparatus.. .217 

Ingot Moulds 136 

Insulated Stool 76 

Illuminating Fgg Stand 76 

Images, Dancing 76 

Iron Ladle 117 

" Blowpipe Spoon 159 

Ivory " " 156 

J, 

Jars, Anatomical 119 

" Battery, plain 117 

" l Fluted 117 

" Chloride of Calcium 44 

" Cold Cream Porcelain 117 

" Conserve 117 

" Decanting 64 

il Hydrometer, boxwood feet.. .117 
" " glass feet, swelled top .117* 
" " " " with ring 
around the neck 118 

Jars, Hydrometer, glass feet, lipped 118 j 

" Infusion 118 

" Leech 118 

" Leydeu 118 

" Mercury jll8 

" Ointment, of Glass 118 

Porcelain 118 

" " knobbed, 119 

" Powder, of Porcelain 118 

" Preparation 119 

k < Sw-fie.. ..118 



INDEX. 



259 



PAGE 

Jets, Hydrogen 119 

Wash Bottle 119 

Bunseu Burner, Hat name 120 

to produce a blast 120 

Berzelius 120 

Faraday s 120 

Jewelers Globes 1 20 

Julep Tubes..., 120 

K, 

Kemp s Regulator 71 

Keut s Furnaces 99 

" Muffles 136 

Kettles, Porcelain 120 

Kipp s Apparatus for Sulphuretted 
Hydrogen 105 

Kipp s Apparatus for the determin 
ation of Carbonic Acid 12 

Knife for Blowpipe 120 

" " cutting cork 120 

" " " tubing 120 



Labels, Blank 120 

11 Chemical 120 

Label Book, Ma wson s 1 20 

Lactometers 114 

Lactoscope, Vogel s 120 

Ladles, Iron 121 

" Porcelain 121 

" Tinned , 121 

Lamps, Berzelius 122 

Buusen s Gas 35 

Alcohol, on tripod 121 

Aphlogistic 14 

Davy s Safety 64 

Drummond, for Coal Oil 71 

Drummond, Duboscq s 123 

Electric 83 

Engravers 123 

Flarneless 14 

Furnaces 99 

Gas Blast 37 

Hydrogen 70 

Laboratory 123 

Magnesium 123 

Muller s 122 

Oxhydric 123 

Perfume 121 

Plattner s Blowpipe 123 

Rose s 122 

Russian Alcohol Blast 1 54 

Spirit, Brass 121, 122 

" Glass 122 

" Student s .123 

" Stands ...165 

" Wicks 124 

Lang s Alcohol Lamp 121 

Lead, Basket 19 

" Measures 127 

" Retorts 15 k ^ 

" Trays 124 

41 Jars. ...118 



PAGE 

Leaning Tower 244 

Leclanche s Battery 80 

Leech Tubes 124 

Spoon 159 

Lenses, Coddingtou 124 

Horn Setting 124 

Magnifying 124 

Stanhope 124 

Photographic 125 

" Watchmakers 125 

" Convex and Concave, etc. 125 

Leslie s Alkalimeter 18 

" Differential Thermometers- 66 

" Freezing Apparatus 95 

" Graduated Cylinder 63 

" Radiator 241 

Leyden Jars 118 

" " movable coatings 76 

" " with bell 76 

Liebig s Apparatus for Organic An 
alysis 246 

Liebig s Aspirator 15 

" Charcoal Furnace for Com 
bustion 49 

Liebig s Condensers 52 

" Drying Tubes 72 

" Gas Bottle 105 

" Potash Bulb ........147 

" Retort, double Tube 151 

" Safety Limb 125 

Lippincott s Vapor Index 77 

Limb, Drying, Liebig s 54 

" Safety " 125 

Light, Refraction of 125 

u Recomposition of 125 

Litmus Paper, various colors 125 

Litre Bottles 125 

" Flasks, various.. 125 

Loadstone 244 

Lubin s Cassolettes 43 

Luminous Plate .,,,., 76 



Machines for Coffee making 48 

Magic Lanterns 125 

" " Slides 244 

" Circle 77 

Magdeburg Hemisphere 247 

Magnesium Ribbon and Wire 127 

" Lamps 123 

Magnetic Dipping Needle 126 

" Needle on Stand 127 

" Toys 127 

Magnetism, Apparatus for .243 

Magnets, Bar 127 

Compound 127 

Circular 243 

Electro 243 

Horseshoe 127 

Revolving 243 

on Stand 243 

with Wheel Armature . . . 244 
Magneto-Electric Machine 126. 127 



360 



INDEX. 



PAGE 

Magnifying Lenses 124 

Marchand s U Drying Tubes 44 

Mariotte s Laws, Apparatus 127 

Marsh s Arsenic Test 14 

Mason s Hygrometer 116 

Mattrasses 127 

Mawson s Labels 120 

Measures, Assayers 127 

Glass i Ill 

Gntta Percha 127 

Graduated 110 

Lead 127 

Metre 128 

Porcelain 127 

Measuring Bottles 125, 1 29 

Cylinders 63 

Flasks 125 

Mechanical Powers 244 

Medical Tests, Apparatus for 222 

Melting Furnaces 100 

Mendelsohn s Burners 38 

Mercury Bottles 127 

Box 127 

Jar, Glass 127 

" Porcelain 127 

" Shower 128 

Trough 127 

Mercurial Receiver 127 

Metallic Plates for Dancing Figures 76 

" Syringe 166 

" Thermometers 169 

Metre Measures 128 

Microscopes, Aplanatic 125 

MeCulhmgh s Manual 10 

Microchemical Flasks 13 

" Funnels 96 

Eer,orts ..152 

Watch Glass Heaters 38 

Microscopes, Large 128 

Pocket 124 

Small 128 

Solar 129 

Microscopic Covers 129 

Dishes, Glass (No. 1436) 22 

Slides 129 

Milk, Essayers 114 

Milk Test, Optical 120 

Minerals 206 

" for Blowpipe reactions 210 

" Cabinets of 213 

" Crystaliue colors 209 

" for Cleavage 21 1 

" for Fusibility 211 

" for Hardness 211 

Mineralogical Hammers Ill 

Mineralogists Slates 129 

Minim Glasses 110 

Mirrors, Convex and Concave 245 

Misers Plate 129 

Mitscherlich s Apparatus for Arsenic 

Detection .. .. 14 

Mitscherliclrs Drying Tubes 72 

< funnel Tubes ,. 98 



PAOU 

Mitscherlich s Polarization Appara 
tus 145 

" Potash Bulbs 147 

Mixing Bottles 229* 

" Capsules, brass 129 

" horn 129 

" Jars 129 

Model showing motions of human 

eye 245 

Models of Crown Diamonds 48 

" of Crystals 48 

" of Eye 89 

" of Precious Stones 48 

" of Machinery 130 

" of Mining Machinery and 

Tools 130,133 

of Furnaces, &c 131, 132 

" of Telegraph 7fe 

" Water-wheels, &c 133 

" Engines 131 

Mohr s Alkalimeter 13 

" Apparatus fpr determina 
tion of Carbonic Acid 12 

Mohr s Burettes 34 

" Chloriue Safety Pipette. ... 46 

" Gas Apparatus 46 

" Clamps. 47 

" Distilling Apparatus. .. .46 

237 

" Perculators 139 

" Piuchcock 140 

" Pipettes ,...141 

" Potash Bulbs 147 

Monochromatic Light Apparatus .. 133 

Mordaunted Cloth 1 32 

Mortars, Agate 134 

" Diamond 66 

" Emulsion 135 

" Glass 135 

" Iron 135 

" Mixing 135 

" Porcelain 135 

" Powder 13"> 

" Steel 136 

" Wedge wood 1 3(i 

Morton s Monochromatic Lamp 13:< 

Moulds, Boxwood 1 36 

" Brass 136 

" Charcoal 136 

11 Crucible 136 

" Cupel (forming) 136 

" Ingot 136 

" Steel (for cupelling) 130 

" for forming Square Blocks 

of charcoal 228 

Moulds, Scoritier 136 

fi Scorifying lof> 

" Suppository. 136 

Mouth Pieces, Horn 133 

" " for Inhaling 134 

" " Ivory 134 

" " Wood 134 

" BlowPipe 25 



JXDI:X. 



PAGE 

Muffle Furnaces , , 99 

Muffles, French Clay 136, 137 

" Hibb s 136 

u Kent s , 136 

" Sand 136 

Mulder s Absorption Meter 133 

Mullers, Agate 10 

" Glass 137 

Mailer s Lamps 122 

Munktell Filtering Paper U2 

M urrle s Apparatus 237 

N, 

Needles, Astatic . 77 

Needles, Dipping 67 

" Magnetic 127 

Nicholson s Hydrometers 137 

Nipper Taps 140 

Nipple Shells 137 

Nitrogen Bulbs 137 

" Limbs 137 

Tubes 51 

" " Boh .16 . 

" Determination Apparatus 238 

Nitrous Oxide Gas Apparatus 137, 

Noebel s Silt Apparatus 83 

Nursing Bottles 137 I 



PAGE 

Paper, Joseph ., ........138 

" Litmus 138 

" Neutral 138 

" Parchment 138 

" Tea 139 

" Turmeric 139 

" Weights 139 

Parabolic Reflectors 139 

Parting Flasks 92 

Pencils, Carbon 41 

Pepy s Gas Holder 107 

Percolators 139 

Perfume Bottles 139 

Permanganate Burettes 33 

Perrot s Furnace 100 

Pestle s, Porcelain 139 

Phosphorus Apparatus 64 

Photographic Baths 1 40 

Cuvettes 62 

Dishes 140 

Lenses 125 

Photometers 139 

Photometric Burners ]39 

Candles 139 

" Meter 108 

Pill Boxes 140 

" Tiles.. ..140 



Corks 

Tops ,, 



i:J7 Pincers.. ..140 



137 



0. 



Objects for Spectral Analysis, col 
lection 48 

Oechsle s Hydrometer 114 

Oil Receivers 138 

* Hydrometers 114 

" Lamps 123 

" Drummond Lamp 71 

Optical Apparatus 1244 

Organic Analysis Apparatus 246 

Orrery, Electrical 77 

Otto s Acetimeter 6 

" Hydrometer.. 113 

Oxhydrogen Blow-pipes 25 

" Lamps 123 

" Bunsen s Apparatus, for. 239 

Oxygen Retorts 152 

Ozonometer, Siemaii s 138 

Electrical 138 

P. 

Page s Revolving Electro Magnet.. 138 
Rotating Apparatus 138 

Palettes 139 

Pans, Bed 139 

I )essLcating 65 

Expectorating 139 

Gold Washing 139 

Horn 40 

Papei, Bibulous 138 

Filtering 92 

Filters 91 

orlazed . . 138 



Pinchcocks, Brass 141 

Bunsen s 141 

Mohr s 140 

" with Steel Spring 141 
" with Screw and Bent Lip 140 

Pinchcocks, Squibbs .141 

Pipes for Hydrogen Bubbles 141 

" for Organs "... 141 

Pipettes, Plain 141 

Ball or Cylindrical 141 

u Dropping 141 

" Ettlings 141 

Filling 141 

" Fixed 141 

Graduated 141 

Pistol Electric 77 

Pith Balls 142 

" Ball Electrometer 75 

" Birds 1 42 

" Images 142 

Plautamonr s Funnel 87 

Plate Electrical Machine 75 

Plate, Rod Hook, and Check Screw .142 

Plates, Brass 142 

Dessicating 66 

E art hen 142 

Glass 109 

" Colored 109 

Luminous 76 

Miser 77 

Perforated 142 

Porous 142 

Metallic 76 

Platinum Boats 142 

Covers 143 



I^DEX. 



PAGE 

Platinum Crucibles 143 

" Dishes 142 

" End Forceps 94 

" End Tongs 142 

" Foil. 143 

Jets 142 

Points 142 

Sheet 143 

Scrap 142 

Spatulas 142 

Sponges 142 

Spougy .. 199 

Spoons 142 

Tips 142 

Wire 143 

Plattner s Apparatus for Blow-pipe 

Assay 22? 

Plattner s Blow-pipes 215 

" Crucible Moulds 60 

" Charcoal Borer 43 

" Porcelain Capsules 41 

" Mixing Capsule 129 

" Roast 152 

" Sieves I5(i 

" Triangle 172 

Pliers 143 

Plumbago Crucibles and Covers. .. 5^ 

Pneumatic Apparatus 247 

Cistern. 143 

11 Pumps, various.. ..143, 144 

" Troughs, various 145 

Pocket Compasses f 2 

Poelons Fire clay f9 

Polariscope 176 

Polarization Apparatus 145, 146 

Pomades Glass 146 

" Porcelain 118 

Porous Cups 43 

Porous Plates 143 

Porter s Dessicator 65 

Potash Bulbs, various 1 47 

" Pipettes 147 

Powder Scoops 155 

" Spoons 157 

Prat-Dumas Filtering Paper 91 

Precipitating Glasses 147 

Preparation Glasses, Flat Bottom.. 147 

" " Round Bottom J73 

" Jars, Various... 119 

Pressure Boards for Gas Bags 104 

Prince Rupert Drops 153 

Prisms, Acromatic 148 

" Mounted 245 

for Dark Chamber 147 

Equilateral 148 

" Mounted 245 

Hollow 147 

" Bottle 147 

Flint Glass 14? 

Nicol s 148 

Proof Glasses 148 

Pulse Glasses 148 

Pumps, forcing 148 



Pumps, Hydraulic 148 

" Buuseu s Quick Filtering . . 89 
" for Fire Engine, Illustra 
tion 148 

Pumps, Pneumatic 246 

Punch Stick 148 

Pungeuts, Various 148, 149 

Pyramid Filter Case Japanned.. .. 91 

Pyrometers 14 1> 

Pyle s Manual lu 



Qualitative and Quantitative Sets.227 

Qualitative Blow-pipe Sets 228 

Qualitative Chemical Set of Appa 
ratus 221 

Qualitative Chemical Analysis, Stu 
dents Sets 231 

Quetschhahne 140, 141 

Quick Filtering Apparatus 89 

Quilled Receivers 150 

Quantitative Urinary Analysis 221 

" Blow-pipe Set* 223 

" Chemical Students Set. 230 
Quevenne s Cremometei- 57 

R. 

Radiator, Leslies 149 

Rainuielsberg s Burette 34 

" Hot Air Bath 72 

Rasps 149 

Reagents, list of 183 

Reagent Boxes 149 

" with Blow-pipe 149 

Chests 149 

Rece vers, Florentine 150 

Earthen Ware 151 

Porcelain 151 

Plain 149 

Quilled 150 

Tubulated 150 

Tubulated & Stoppered. 150 
Tubulature at the side .150 
with Rod, Hook & Ball. 247 

Reduction Tubes 151 

Reflectors 139 

Relative Value of Weights and 

Measures 250 

Relative Value of Troy French 

Weights 250 

Retorts, Clark s 151 

Copper 152 

double bulb in the neck .. 151 

tube 151 

Faraday s 151 

Iron 152 

Michrochemical 152 

Lead 152 

Plain 151 

Platinum 152 

Relative value, French Metre, Litre, 

and Gramme 250 

Retorts, Porcelain 152> 



INDEX. 



263 



PAGE 
Retorts, Tubulated and Stoppered 

of Glass 151 

Retorts, Stoneware 152 

" Funnels 96 

" Supports 165 

Revolving Electro Magnet 78 

Reverberatory Furnaces 100 

Riders of Aluminum 152 

Riess Electrical Condenser 53 

Rings, Concentric t 152 

" Straw 161 

Roasting Charcoal 152 

" " forms 153 

Dishes 152 

Roasts, Plattiier s 152 

Rods of Glass, Electric 153 

" Glass 153 

Rod of Shellac, Electric 153 

Rods, Stirring 160 

Rose s Burners 38 

Rose s Crystallographic Models 48 

Rubber Balls 153 

Finger Tips 153 

Gloves 110 

Sheet 153 

Stoppers 153 

Syphon Primers 153 

Urinals 153 

Ruhmkorff s Coils 78 

Rupert Drops 153 

Russian Spirit Lamps 154 

S. 

Saccharimeters 145, 146 

Saccharometers 114 

Safety Funnels 97 

Safety Lamp 64 

Sallerons Alembic 12 

Salometer 154 

Sand Burners 38 

Sand Baths, various 154 

" Crucibles 59 

" Glasses, various 154 

Saussure s Hygrometers 116 

Saw to Cut Charcoal 154 

Scales, Apothecaries 154 

" Button 154 

" Prescription 154, 155 

Scale Pans 155 

Scheibler Apparatus 7 

" Colorimeter 39 

Schuster s Dropping Glasses 71 

Schulze Silt Apparatus 83 

Scissors, ordinary 155 

" Tinsmiths 155 

Schrotter s Apparatus for Analysis 

Carbonates 12 

" Dessicator 65 

Scoops, of horn 155 

Scorifiers, Freiburg 155 

" Urn shape 155 

Sc<*Hfier Holders, of Iron 155 

u Moulds 136 



PAGE 

Scorifier Tongs 171 

Scorifying Moulds , 155 

Scratch Brushes 155 

Brush Wire 155 

Screen for Tripod 155 

Screws, Brass head 155 

Sefstrom s Forge 241 

Seidlitz Powder Cups 155 

Separating Bottles 30 

Funnels 96,97 

Sets of Solids 244 

" of Apparatus, various. 214, to 231 

Serriu s Lamps 62 

Shades Glass, Lily 1 55 

Sharpeners for Knives 155 

Shellbach s Support 165 

Sieves, Bolting Cloth 156 

" Box, Griffin s 156 

" Brass 155 

" Horse-hair 155 

" Plattners 156 

" Silk 156 

Sieman s Ozonometer 1 38 

Silicated Filter 89 

Sillimann s Chlorine Gas Apparatus 46 
Silver Assay, wet way Stopcocks.. 160 

" Pure, for Mineral Tests 156 

" Capsules 40 

" Crucibles 59 

Simpson s Nitrogen Bulb 49 

Slips of Glass 156 

u Porcelain 156 

Smee s Battery 80 

" Zincs 180 

Smelling Bottles 149 

Soda Paper 156 

" Cartridge Mould 136 

" Water Apparatus 156 

Sodium Spoon 156 

" Flame Apparatus 156 

Soils, Analysis Apparatus 83 

Soleil-Ventschke s Saccharimeter. .145 

Soufflets 109 

Spatulas Bone 156 

Brass 157 

Glass 157 

Ivory 156 

Iron 157 

Platinum 157 

Porcelain 157 

Steel, various 157 

Spec fie Gravity Balances 16, 17 

" Bottles 157 

" in cases. . .158 

" Flasks 158 

Spectra of Stars & Metals on Charts 45 

Spectroscope, Brownings hand 158 

" " two prisms. 158 

Heidelburg 158 

Spectroscopic Chart 45 

Lamps for Alcohol . . 159 

" Gas... 159 

Stands 159 



264 



INDEX. 



PAGE 
Spectroscopic Support, Mitscher- 

lisch s 164 

Spectroscopic Salts, in set 48 

Spectrum, Lantern for showing on 

Screen 159 

Spirit Lamps, various 122 

Spiral or Spotted Tube 159 

Spoons for Blowpipe 159 

Bone 159 

Brass 159 

Desert 159 

Dipping, of Glass 159 

Horn . 159 

Iron 159 

Leech 159 

Platinum 142 

Porcelain 159 

Tea, of Glass and Porcelain 159 

Table 19 

Spreugel s Mercurial Pump 143 

Squibb s Piuchcocks 141 

Stanhope Lenses 124 

Steamtight Determ tn Apparatus. 23^ 
Sticks for breaking Glass, of Coal. . 159 

Stills, of Copper 160 

Stirrers, of Glass 160 

Stockhardt s Chemistry set 224 

Stool, Insulating 160 

Stopcocks, Brass, various. . . .160, 161 
" Earthenware, various . . 160 
St. Claire de Ville Combustion Fur 
nace 50 

Stopcocks, Glass, various 160, 161 

" Silver Avet way Assay.. 160 

Stoppers, Rubber 153 

Storer s Combustion Furnaces 49 

Storm Glasses 161 

Stoves, Gas 161 

" Kerosene 161 

Straining Baskets, Earthenware. .161 

< Porcelain 161 

" Dishes " 161 

" Plates, Earthenware 161 

Stra \v Rings 161 

Students Qualitative Chemical set. 231 
Quantitative " " .230 

Stubb s Forceps 94 

Streak of Mineral Tests 1 29 

Students Chemical Set 224 

Suction Tubes - 98 

Sulphuretted Hydrogen Gas Appar 
atus 105, 106, 107 

Sulphuric Acid Apparatus 9 

" Testing Apparatus. 233 

Supports, Burette 162,163 

Crucible 164 

Filter 164 

Funnel 164 

Griffin s 164 

Hoffman s 163, 164 

Retort 165 

Test Tube 164, 165 

Japanned for Flasks 165 



PAGE 

Supports, Mitscherlisch, for Exam 
ination before the Spectroscope. . 164 

Supports, Fresenius 164 

Table 164 

Gay Lussac s 165 

Shellback 1.65 

Swedish Filtering Paper 92 

Swimmers 34 

Syphon, Acid 9 

" <jrlass plain 166 

" Pipettes 166 

Syringes, Fire, of Glass 166 

" Glass, small 166 

Metallic 166 

T. 

Table Supports 164 

Tables for Glass Blowers 1 09 

Tanks for holding Solutions 166 

Tantalus Cup 166 

Tapers to burn in Oxygen 166 

" Wax 166 

Teats, of Cork 55 

Telescope 166 

Tellurian 166 

Telegraph Working Model 7H 

ClockWork 78 

Tests, Blowpipe 226, 227 

Test Chests 149 

Dishes 167 

Glasses, conical 167 

" Microchemical 167 

Lead Measure 1 67 

" Sieve 167 

Metals 210 

Marsh s Arsenic 167 

Paper 167 

Solutions 183 to 205 

Spoon with Spatula 1 57 

Tubes, Bohemian 1 67 

" French and German . . . 167 

" in nest 167 

ki on foot 167 

stoppered 168 

" Brushes 32 

Holders, Brass 1 68 

Wire 168 

" " Wood 168 

" Supports 165 

Testing Slabs 168 

Theatre Pantin 168 

Thermo-Electric Pair 168 

" " Pile 168 

Thermometers, Axillary 168 

" Beer... 168 

" Centigrade 168 

" Chemical 168 

Day and Night 169 

Differential 169 

Fahrenheit 169 

House 169 

Medical -69 

Metallic, 169 



INDEX. 



265 



PAGK ; 



PAGE 



Tkarinonieters, Sugar House 169 

Window 169 

Milk Glass Scale.. .169 

Milk Scale 169 

Paper " 168 

Reamur 169 

Thermometer Tabes 169 

Thieves 169 

Thompson s Electrometer 83 

Thunder House 170 

Tin Foil 170 

Tissue Figure 170 

Tongs, Coal 170 

" Crucible 170 

" Cupelle 170 

Scorifier 171 

Galvanized Iron 171 

German Silver 170 

Iron 170 

Nickleized 170 

Steel 170 

Tools for Bio wpiping 227 

Torricellian Experiment 171 

Touries 171 

Trays, Porcelain 171 

" Lead 171 

" Wood 172 

Trellis top 172 

Triangles, Blowpipe 172 

Glass 172 

Porcelain 172 

" Wire 172 

Trimming Hammers Ill 

Tripods, Brass 172 

" Iron 172 

" Gah r anized Iron 172 

" Wrought " 172 

Troughs, Mercury 128 

" Combustion 51 

Tubes, Arsenic 15 

" Chloride of Calcium 45 

u Combustion 51 

" Condensing 53 

" Connecting 54 

Delivery ..173 

Drying 72 

Filling 98 

Gas 108 

Geissler s 78 

Julep 120 

Liebig s Condensing 173 

for Musical Sounds 173 

Phosphorescent 173 

Sealing 173 

Spiral Electric 173 

T 173 

U 173 

U, with Bulbs 173 

U, with Draining Tube 173 

" " " and 

Stopcock 173 

.Tubes, Specimen 173 

" Vaccine 173 



i Tubes, VogePs 174 

Tubing Barometer 174 

Bohemian 174 

Capillary 174 

Colored 174 

Combustion 174 

>; Efirt heii 176 

French 174 

Free of Lead 174 

Lead 174 

Porcelain 176 

Thermometer 176 

Rubber, Black 176 

Vulcanized 176 

| Turmeric Paper 176 

Twaddle s Hydrometers 1 15 

Twine 176 

U. 

j Universal Furnace 1 02 

" Hydrometer 114 

| Universal Supports, Wood . .... .. 165 

" Squibbs 250 

I United States Custom House Alco 
holometers 10 

Upcast and Downcast Draught 

Model .176 

! Ure s Alkalimeter 13 

" Eudiometer 86 

Urinals, of Glass 176 

" Rubber 176 

Urine Hydrometers 115 

" Test Apparatus Fl hit s 225 

" Qualitative Analysis Test 

Apparatus 221 

Urine Volumetric Analysis Appar 
atus - 221 

V. 

Vacuum Tubes 79 

Vapor Index, Lippincott s 177 

Vases, Earthen 177 

" Glass 177 

V Tubes 177 

Vials, Homeopathic 177 

" Sample 177 

VogePs Gas Bottle Tubes 174 

" Optical Lactometer 120 

Volumetric Analysis, Apparatus * - 219 
Von Babo s Sulphuretted H <TO 

gen Apparatus 1 06 

Von Babo s Burner 36 

Vulcan Burners 38 

Van Brunt s Electrical Condenser. 74 

w. 

Washing Bottles 177 

" Faraday s 177 

" " VogePs 174 

" Woultfs 180 

" Gas Apparatus of Porce 
lain 109 

Watch Glasses, Bohemian 177 



266 



1XDEX. 



PAGE 

Watch Glasses, French 177 

" Glass Holders, various 47 

Makers Hammer Ill 

" Springs 177 

Water Baths, Copper 177 

" Porcelain 177 

" Nickelized 177 

Distillation Apparatus 69 

Decomposition -232, 233, 239, 248 

Freezing in Vacuo 95 

Hammers 177 

Weights and Pulleys 244 

" Various 178,179 

Welter s Safety Tubes 97 

WhirliugTable 244 

Wilson s Chemistry set 216 

Wild s Saceharimeter 145 

Wollastoii s Cryopherous 60 

Goniometer 110 

Wetherell s Apparatus for deter 
mining Carbonic Acid in Carbon 
ates*. 12 



Wire, Brass 

i Copper 

" Silk Wound ..179 

Gauge 179 

Iron 180 

Magnesium 179 

Piano 179 

Will & Varrentrapp s Nitrogen 

Bulbs 137 

Wirtemberg Syphon 243 

WoulfFs Apparatus 280 

" Bottles 31 

Worms, Condensing, various 54 

Wurtz Distilling Apparatus 70 



Zinc Filings 180 

" Sheet 180 

Zincs for Bichromate Batteries 180 

" Bunsen s Battery 180 

" " Grove s " 180 

" " Smee s " ..180