SPARE THE CROTON AND SAVE THE COST.

DRIVEN OR TUBE WELLS furnished to large consumers of Croton and

Ridgewood Water. WM. D. ANDREWS & BRO., 414 Water St., N. Y. who

control the patent for Green's American Driven Well.

PATENT RIGHTS for Useful Inventions Wanted.

Address Box 1012, P.O., N. Y., with description and terms.

Scientific American, Vol. XXXVII.—No. 2. [New Series.], July 14, 1877 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures · 第 150 / 213 题