EMPLOYMENT.

$250 A MONTH with Stencil Dies. Samples free. Address

S. M. SPENCER Brattleboro Vt.

* * * * *

THE

TANITE EMERY WHEEL.

Does not Glaze, Gum, Heat, or Smell. Address

THE TANITE CO.,

Stroudsburg, Monroe Co., Pa.

* * * * *

A. S. & J. GEAR & CO., Boston, furnish every description of Wood and

Iron Working Machinery and Supplies. The best in use, regardless of

maker, at lowest possible rates.

* * * * *

_WORKING MODELS_

And Experimental Machinery, Metal, or Wood, made to order, by J. F.

WERNER 62 Center st. N. Y.

* * * * *

McNAB & HARLAN, Manufacturers of Wrought Iron Pipe and Fittings,

Brass Cocks, Valves, Gage Cocks, Whistles, Water Gages, and Oil Cups,

Harlin's Patent Lubricator, Plumber's Brass Work, Getty's Patent Pipe

Cutter, Getty's Patent Proving Pump and Gage. No. 86 John st., New

York.

* * * * *

THE

ALLEN ENGINE WORKS,

THE ALLEN ENGINE.

Scientific American, Volume XXIV., No. 12, March 18, 1871 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures. · 第 186 / 194 题