S FALLS MASS.

Langdon and New Langdon Mitre Box.

Send for Circular.

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SCIENTIFIC AMERICAN SUPPLEMENT. Any desired back number of the
Scientific American Supplement can be had at this office for 10 cents.
Also to be had of newsdealers in all parts of the country.

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THE OPEN FIREPLACE IN ALL AGES.

By J. P. Putnam, Architect. One vol. 12mo. Price $2.

With 269 illustrations of famous fireplaces of historical and artistic
interest, together with original designs and suggestions for modern use.

*** For sale by all Booksellers, or will be sent, postpaid, on receipt
of price, by the Publishers,

JAMES R. OSGOOD & CO., BOSTON.

* * * * *

STEAM PUMPS, THE NORWALK IRON WORKS CO., SOUTH NORWALK, CONN.

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GREAT IMPROVEMENTS Recently made in CRUSHING AND GRINDING GOLD and
SILVER ORES, BONES, PHOSPHATE ROCK, and CHEMICALS. We compel QUARTZ to
grind QUARTZ.

Address, for new circular, BAUGH & SONS, Philadelphia, Pa.

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[Illustration]

BEST FOOT LATHES, Back geared and screw cutting. Small Lathes, Hand
Planers for Metal, Small Gear cutters, Slide Rests, Scroll and Circular
Saw Machines. Lowest Prices. Send for illustrated catalogue.

N. H. BALDWIN, Laconia, N. H.

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MECHANIC WANTED.

A skilled mechanic, capable of constructing and operating a works for
the manufacture of wrought iron pipe and tubing. Address

DUNMOYLE, Lock Box 1459, Pittsburg, Pa.

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CENTENNIAL, AND PARIS MEDALS.

Mason's Friction Clutches and Elevators.

"New and Improved Patterns."

VOLNEY W. MASON & CO., Providence, R. I., U. S. A.

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WANTED

A thoroughly competent and experienced man to take charge of a foundry
employing 200 men, doing engine and general work. Address A. & Co., Box
773, New York.

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BLAKE'S PATENT POSITIVE STEAM TRAP.

[Illustration]

This Trap is adapted to all places where steam is used for _heating_ or
_drying_ purposes. It is simple in construction, _positive in its
working_ and much lower in price than any other Trap.

Descriptive Circular sent on application. Address SALAMANDER GRATE BAR
CO, 110 Liberty Street, New York.