STEAM ENGINES & BOILERS

From 4 to 500 horse power including Corliss Engines, Slide Valve

Stationary Engines, Portable Engines, etc. Also, Circular Saw Mills,

Shafting, Pulleys etc. Wheat and Corn Mills, Circular Saws, etc.

Send for Price List.

WOOD & MANN

STEAM ENGINE COMPANY,

WORKS--UTICA, N. Y.

PRINCIPAL OFFICE--42 CORTLANDT ST., NEW YORK.

* * * * *

DRILLS

DIAMOND POINTED

_STEAM DRILLS._

FOR ALL KINDS OF ROCK DRILLING, Mining, Quarrying, Tunneling, Railroad

Grading, Well Boring, Prospecting, etc. Fifty to Seventy-five per cent

of cost and time of hand labor saved. "Test Cores," in form of solid

cylinders of rock or mineral taken out of mines from any depth not

exceeding one thousand feet, showing true value, stratification, etc.

No percussion. Never require sharpening. FIRST PREMIUMS awarded in

both American and Europe. Illustrated Circulars sent on application.

Beware of infringements.

SEVERANCE & HOLT,

Proprietors and Manufacturers,

Office 16 Wall st., New York.

* * * * *

_NICKEL PLATING._

BEARDSLEE NICKEL AND MANUFACTURING CO.,

82 AND 84 FULTON ST., BROOKLYN, N. Y.

RIGHTS sold for the use of, and instruction given in the best method

of Nickel Plating. An experience of twelve years enables us to offer a

solution and apparatus that remain practically unchanged for years, in

constant use.

Scientific American, Volume XXIV., No. 12, March 18, 1871 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures. · 第 180 / 194 题