L. W. POND, 98 Liberty st., New York.

* * * * *

UNRIVALLED Hand Saw Mill, Self-feeding, with ease. Rip 3-in. lumber;

guaranteed do work of 3 men. The only hand saw machine known, does as

represented. Thousands in use. Send for circular.

WM. H. HOAG, Sole Manufacturer, 214 Pearl st. N. Y.

* * * * *

U. S. PIANO CO. N. Y. Best in the World--$290. Sent on trial--See large

cut and terms in Scientific American. Oct. 1st 1870.

* * * * *

_DOVETAILING MACHINE._ WILL MAKE 400 DRAWERS PER DAY. See SCIENTIFIC

AMERICAN, Jan. 11, '71. H. H. EVARTS, 93 Liberty st.; TREVOR & CO.,

Lockport N. Y.

* * * * *

CIRCULAR SAW MILLS. HAYS & NEWMAN'S PATENT DOUBLE PARALLEL EDGERS,

FOSTER'S PATENT LOG-CANTING MACHINES, and Sawmill Machinery generally,

manufactured by the WASHINGTON MOWING MACHINE COMPANY. LEROY MOWRY,

Agent, Sandy Hill, Wash. Co., N. Y. Send for Illustrated Circulars and

Price Lists.

* * * * *

_TO ELECTRO-PLATERS._ BATTERIES, CHEMICALS, AND MATERIALS, in sets

or single, with books of instruction, manufactured and sold by THOMAS

HALL, Manufacturing Electrician, 19 Bromfield street, Boston, Mass.

Illustrated catalogue sent free on application.

* * * * *

PRIZE MEDAL SCROLL SAW.--

THOS. L. CORNELL, DERBY, CONN.

* * * * *

Scientific American, Volume XXIV., No. 12, March 18, 1871 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures. · 第 159 / 194 题