GUILD & GARRISON,

[Illustration: Pump]

34 to 44 First St.,

Williamsburgh, N. Y.,

Manufacturers of STEAM PUMPS for all purposes.

Also Vacuum Pumps, Vacuum Fans and Air Compressors.

NON-COMBUSTIBLE STEAM BOILER AND PIPE COVERING

WITH "AIR SPACE" IMPROVEMENT.

Saves 10 to 20 per cent. CHALMERS SPENCE CO.,

Foot E. 9th St. N. Y.; 1202 N. 2d St., St. Louis, Mo.

NEW WOOD LATHE; ALSO SCROLL SAW. BOTH new and first-class.

Send for circulars.

H. BICKFORD, Cincinnati, O.

Scientific American, Vol. XXXVII.—No. 2. [New Series.], July 14, 1877 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures · 第 186 / 213 题