MODEL ENGINES

Complete sets of CASTINGS

for making small Model steam Engines

11/2 in. bore, 3 in. stroke, price, $4;

ditto 2 in. bore, 4 in. stroke,

price, $10, same style as cut.

Gear Wheels and Parts of Models.

All kinds of Small Tools and Materials.

Catalogue Free.

GOODNOW & WIGHTMAN,

176 Washington Street,

Boston, Mass.

STUTTERING CURED by Bates' Appliances. Send

for description to SIMPSON & Co., Box 2236, New York.

SPARE THE CROTON AND SAVE THE COST.

DRIVEN OR TUBE WELLS

furnished to large consumers of Croton and Ridgewood

Water. WM. D. ANDREWS & BRO., 235 Broadway, N. Y.,

who control the patent for Green's American Driven Well.

THE DRIVEN WELL.

Town and County privileges for making DRIVEN

WELLS and selling Licenses under the established

AMERICAN DRIVEN WELL PATENT, leased by the year

to responsible parties, by

WM. D. ANDREWS & BRO.,

235 BROADWAY, NEW YORK.

ROOFING.

For steep or flat roofs. Applied by ordinary workmen

at one-third the cost of tin. Circulars and samples free.

Agents Wanted. T. NEW, 32 John Street, New York.

Scientific American, Vol. XLIII.—No. 1. [New Series.], July 3, 1880 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures · 第 114 / 157 题