American Journal of Science. 3 
Druggists and physicians can be supplied at the — wholesale 
price by. addressing their orders to A. B. & D. SANDS, Druggists, 
79 and 100 Fulton street. Sold also by all the th Druggists 
in New York, Boston, and Philadelphia. Retailed in New York by, 
A. B. Sands & Co., 273 Broadway, corner of Chambers street; by 
D. Sands & Co., 71 East Broadway, corner of Market t street ; by 
Rushton & Aspinwall in all their stores; by Souillard & Delluc; by 
Adamson & Olliff, 6 Bowery, and by nearly all Apothecaries. Sold 
in Boston by William Brown, 481 Washington street ; by Smith & 
Fowle, 138 Washington street ; by Brewers, Stephens & Cushing, 
_jand by Reed, Wing & Cutler. Sold in Philadelphia’ by Charles 
JEllis & Gan 56 Chestnut street; by Dr. Jane, 20 South Third 
street; by D. B. Smith, and W. Hodgson, Arch and Sixth street. 
Sold in Baltimore by G. K. Tyler. In New Orleans by Sickles & 
Co. Sold in ee Haven by L. K. Dow, and by G. N. Seagrave, 
and in Fair Haven by H. L. Scranton, and by Druggists generally 
in all the cities of the United States. Price 25 cents. 
PHILOSOPHICAL APPARATUS. 
JOSEPH M. WIGHTMAN, & 
No. 33, Cornutt, Bosron, 
Manufacturer of path: eechanicagen! Chemical Appa- 
Among which, are ieakes ~e illustrating Inertia, Attraction, 
and other Laws of Matter. 
Morton.—Laws of Falling Bodies, Compound Motion, Sets for 
ease “of Gravity, Models of Cycloidal Pendulums, Pints dane 
chrone, or line of swiftest descent, Law of Central Forces, show 
ing that bodies in rapid rotation always select the shorter axis, Laory 
xwood Balls for collision. 
Mecuantcats.—Complete sets of various sizes, from $25 to 
00. 
Hyprostatic and Hyprauiie Apparatus, in great variety. 
Pyeumatic.—Lever Air-Pumps, on Leslie’s construction impro- 
ved. Barrel 4 inches and plate 13 inches diameter; patent Single 
Barrel Lever Air-Pumps, on table stand, and also of portable size 
for Academies; Common Air-Pumps, and Condensing Syringes ; 
with a great variety of Apparatus adapted to the different sizes. 
Enecrarcai Prate Macuines.—Improved construction of all 
sizes. Cylinder do. 6 to 10 inches diameter, Batteries, Jointed and 
Universal Dischargers, Balance, Gold Leaf, and other Electrome- 
ters, enn Houses, Cannons, &c. &c. &c. 
at.—Compound Blowpipes, Parabolic Reflectors silver 
plated; 3 in cases with Apparatus, Gas-holders, Cast Iron Mere 
