Send for circular and price list to

CHESTER STEEL CASTING COMPANY,

EVELINA STREET, PHILADELPHIA, PA.

[Illustration: Planer Saw teeth]

FULL SIZE PLANER SAW TOOTH

3 CENTS EACH

"OFFICE OF DICKINSON BROS., RIDGEWAY, ELK Co., PA., May 28th, 1877.

"Messrs. EMERSON, SMITH & Co. GENTS: We have been through four winters

in frozen hemlock, cutting 20,000 feet of lumber per day with your

Patent Planer Saw, averaging 75,000 feet with each set of 40 bits."

--> Mill Men and Sawyers, send your full address, plainly written, on

a postal card, for Emerson's Hand Book of Saws, free, to

EMERSON, SMITH & CO., BEAVER FALLS, PA.

Please name size and style of saw used.

[Illustration: LEHIGH VALLEY EMERY WHEEL CO.]

Machines AND Wheels Guaranteed,

Send for Illustrated Circular,

_Weissport_, PA.

Scientific American, Vol. XXXVII.—No. 2. [New Series.], July 14, 1877 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures · 第 191 / 213 题