American Journal of Science. 3 
Pixn’s Frencu Atr-PuUMPs, WITH GLASS BARRELS; other air- 
pumps with brass barrels, single and double, of various sizes, to- 
gether with the various apparatus used with them 
Large and small Puate Exvectrrican Macuines, CYLINDER 
ELecrricat Macuines, and a variety of Execrricat Apparatus. 
Eectro-Maeners, mounted on frames, of various sizes, capa- 
ble of supporting from 20 to 3000 Ibs. 
Page’s Compounp Maenet and. Evectrorome, for producing 
brilliant sparks and swettal shocks. ‘The same instrument, with a 
contrivance attached by which the intensity of the shocks can be 
modified at pleasure, which renders it one of the most convenient 
instruments for the application of electricity as a remedial agent in 
the cure of disease, and for physiological experiments. 
Small working models of Exe cTRo-Ma6Netic Macuines, of 
different kinds, and a great variety of Execrro-Maenetic Instru- 
MENTS for the purpose of illustrating the theory of Erecrro-Mac- 
NETISM. 
Gatvanic Barrerres on Prof. Faraday’s plan, and others, for 
ifiaguame &c. Catorimorors of different sizes. 
pers—Compounp Biowripes—PortaBLe PNeuMma- 
Beit Guasses, Sie and stoppered, GrapuaTep Bett Guasses, 
Tuses, &c.—Wovutr’s Apraratus, Grass ALEmBIcs, SToPPERED| 
Funnets, Precipitating Jars. 
Nooth’s Apparatus for im Preenating water with carbonic acid. 
Apparatus for solidifying carbonic a 
Grass ConpENSING SYRINGES or ye Pumeps—Maerc Lan- 
TERNS, with AstRonomIcaL and other Siipes—Aaare and Sreen 
Mortars. 
Porce.ain, — — and Brack Leap Cruci- 
IT Lamps— re opets of CrysTats in wood, in boxes conthining one 
hundred different forms—DacuerReoTyPE Apparatus complete. 
An assortment of Platina _— such as CructBLes, CapsuLes, 
Spoons, Forcers, &c.— riley Form, &c.—Sets of 
Ap : 
A large collection of pst anne ion gale by the single specimen 
or in sets. 
O¢> Particular — 
see waters, 
w York, Fins 19, 1841. 
paid to the analysis of ores, minerals, 
i acreage remeron ements 
