16 BENJ. PIKE'S, JR., PRICE CATALOGUE. 



HYDROSTATICS AND HYDRAULICS. 



No. 



335 Fig. 237, scales and weights in boxes, - $ 1.25 



336 Fig. 237, " " " " fine 



quality, - 3.00 



337 Ditto, mounted on a mahogany box with lever 



stand, - - 10.00 



338 Sets of grain weights, from y 1 ^ of a grain to 



1000 grains, - - 4.00 



339 Set of troy weights, from - - $1.50 to 3.00 



340 Set of avoirdupois weights, from 3.00 



341 Fig. 238, hydrometer for spirits, in glass, - 0.75 



342 Fig. 238, " " syrups, alkalies, 



salts, &c. - 0.75 



343 Fig. 238, hydrometer for heavy acids, - 1.00 



344 Fig. 238, alcoholmeter of Guy Lussac, 1.00 



345 Fig, 239, brass hydrometer for spirits, syrups, 



salts, <fec., - - - 4.00 



346 Fig. 239, silver hydrometer for spirits, syrups, 



salts, &c. - - 6.00 



347 Fig. 239, silver alcoholmeter of Guy Lussac, 9.00 



348 Fig. 239, brass " " " 6.00 



349 Fig. 240, Dica's hydrometer, with thirty-six 



weights, - - - 25.00 



350 Fig. 240, Dica's saccharometer with twelve 



weights, - 25.00 



351 Fig. 238, South worth's silver hydrometer, - 10.00 



352 Fig. 241, Nicholson's hydrostatic balance - 3.50 



353 Fig. 242, " " " in 



brass, highly finished, with morocco case, 6.00 



354 Fig. 243, Frye's lactometer for testing the 



purity of milk, - - 1.00 



355 Lactometer for ascertaining the quantity of 



cream in milk, - 1.50 



356 Oleometer for proving the quality of sperm 



oil, - 2.00 



357 Fig. 244, urinometer, 1.50 



358 Glass jar for urinometer, - - 0.50 



359 Fig. 245, urinometer in case, with apparatus, 7.50 



