HYDROSTATICS AND HYDRAULICS. 1*7 



No. 



360 Fig. 238, Twaddell's hydrometers, from No. 1 



to No. 6, each, $ 1.75 



361 Twaddell's hydrometers, the set of six com- 



plete in a box, - - 10.00 



362 Fig. 238, hydrometers for yinegar, - $1 to 2.00 



363 Fig. 238, hydrometers for salt manufacturers, 



showing the per centage of salt contained 



in any brine, - 2.00 



364 Fig. 238, hydrometers for ascertaining the 



quantity of salt in steam boilers, at the 

 temperature of 200 degrees, - 1.75 



365 Fig. 238, brewers' saccharometers, - - 2.00 



366 Glass hydrometer jar, on foot, three sizes, 



50 cts. : 75 cts. ; and - 1.00 



367 Fig. 246, tube for showing the relative weight 



of fluids, - 75 cts to 1.50 



368 Fig. 247, hydrostatic figure in glass jar, $2.50 to 4.00 



369 Fig. 247, ' " " only, - $1 to 2.00 

 .370 Fig. 248, syphon with drawing tube in glass, 0.75 



371 Fig. 248, syphon with drawing tube in metal, 



75 cts. and 1.00 



372 Fig. 248. syphon, plain, in glass, or brass, - 0.38 



373 Fig. 249, Wirtemberg syphon in glass, 38 cts. to 0.75 



374 Fig. 250, Tantalus cup, - 2.50 



375 Fig. 251, double bodied vessel, - 1.50 



376 Fig. 252, lifting pump with glass cylinder, $3 and 4.50 



377 Fig. 253, forcing pump Avith brass or glass 



cylinder, - - $5 and 6.00 



378 Fig. 254, forcing and lifting pump in maho- 



gany frame, - $10 and 12.00 



379 Fig. 255, hydrostatic instrument, rise of water 



to its level, - 7.50 



380 Fig. 256, hydrostatic equilibrium, $2.50 and 4.00 



381 Fig. 257, ' " paradox, - 3.00 



382 Fig. 258, " " - 5.00 



383 Fig. 259, " bellows, $5 ; extra large, 7,00 



384 Fig. 260, vessel for spouting fluids, - 5.00 



385 Fig. 261, Archimedes' screw, - - 9.00 



386 Fig. 262, Barker's mill, - 5.00 



387 Fig. 263, centrifugal pump, - 10.00 



388 Fig. 264, Brahma's hydrostatic press, - - 40.00 



389 Fig. 265, hydrostatic paradox with movable 



piston, - ... 25.00 



