Eastern Agency for

=Barnes' Foot Power Machinery.=

_Full line in stock_ at factory prices. Can be seen in operation at

CHAS. E. LITTLE'S, 59 Fulton St., N. Y. _Cast Steel Pump Log Augers

and Reamers a specialty._

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=$250.= HEALD, SISCO & CO.'S "=RELIABLE=" 20 Horse Power, Stationary,

Horizontal, Double-crank Steam Engine. Complete with Judson Governor,

Boiler-feed Pump, Water Heater, etc. Best and cheapest in the world,

and fully guaranteed. TWO HUNDRED AND FIFTY DOLLARS. Send for

circular to

HEALD, SISCO & CO., Baldwinsville, N. Y.

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=Wood-Working Machinery,=

Such as Woodworth Planing, Tonguing, and Grooving Machines, Daniel's

Planers, Richardson's Patent Improved Tenon Machines, Mortising,

Moulding, and Re-Saw Machines, and Wood-Working Machinery generally.

Manufactured by

WITHERBY, RUGG & RICHARDSON,

26 Salisbury Street, Worcester, Mass.

(Shop formerly occupied by R. BALL & CO.)

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=PATENT MINERAL WOOL.=

Entirely _Fireproof_, undecaying, and the best _non-conductor of heat,

cold, or sound_. Cheaper than hair-felt.

=A. D. ELBERS=,

_P. O. Box 4461._ 26½ Broadway, N. Y.

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[Illustration: WROUGHT IRON BEAMS & GIRDERS]

THE UNION IRON MILLS, Pittsburgh, Pa., Manufacturers of improved

wrought iron Beams and Girders (patented).

The great fall which has taken place in the prices of Iron,

and especially in Beams used in the construction of FIRE PROOF

BUILDINGS, induces us to call the special attention of Engineers,

Architects, and Builders to the undoubted advantages of now erecting

Fire Proof structures; and by reference to pages 52 & 54 of our

Book of Sections--which will be sent on application to those

contemplating the erection of fire proof buildings--THE COST CAN

BE ACCURATELY CALCULATED, the cost of Insurance avoided, and the

serious losses and interruption to business caused by fire; these

and like considerations fully justify any additional first cost. It

is believed, that, were owners fully aware of the small difference

which now exists between the use of Wood and Iron, in many cases the

latter would be adopted. We shall be pleased to furnish estimates

for all the Beams complete, for any specific structure, so that the

difference in cost may at once be ascertained. Address

CARNEGIE, BROS. & CO., Pittsburgh, Pa.

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=Pond's Tools=,

=Engine Lathes, Planers, Drills, &c.=

Send for Catalogue. DAVID W. POND, Successor to LUCIUS W. POND.

=Worcester, Mass.=

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=$3 GOLD PLATED WATCHES.= Cheapest in the known world. _Sample Watch

Free to Agents._ Address, A. COULTER & Co., Chicago.

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=EAGLE FOOT LATHES,=

[Illustration]

Improvement in style. Reduction in prices April 20th. Small Engine

Lathes, Slide Rests, Tools, etc. Also Scroll and Circular Saw

Attachments, Hand Planers, etc. Send for Catalogue of outfits for

Amateurs or Artisans.

WM. L. CHASE & CO.,

95 & 97 Liberty St., New York.

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=The George Place Machinery Agency=

=Machinery of Every Description.=

121 Chambers and 103 Reade Streets, New York.

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CIVIL and MECHANICAL ENGINEERING

At the Rensselaer Polytechnic Institute, Troy, N. Y. Next term

begins Sept. 12. The Annual Register for 1878 contains a list of the

graduates for the past 52 years, with their positions; also, course

of study, requirements for admission, expenses, etc. Address Wm. H.

Young, Treas'r.

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=THE DRIVEN WELL.=

Town and County privileges for making =Driven Wells= and selling

Licenses under the established =American Driven Well Patent=, leased

by the year to responsible parties, by

=WM. D. ANDREWS & BRO.,=

NEW YORK.

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_NOW READY._

=The Army of the Republic:=

ITS SERVICES AND DESTINY.

=BY HENRY WARD BEECHER.=

An Oration at the Re-union of the Army of the Potomac, at Springfield,

Mass., June 5th, comprising Christian Union Extra No. 12.

Price 10 Cents.

=THE CHRISTIAN UNION,=

27 Park Place, N. Y.

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[Illustration: WOOD WORKING MACHINERY. PLANING, MATCHING, MOLDING,

MORTISING, TENONING, CARVING, MACHINES. BAND & SCROLL SAWS UNIVERSAL

AND VARIETY WOOD WORKERS, &c. &c. =J. A. FAY & CO.= CINCINNATI,

O.U.S.A.]

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=Lathes, Planers, Shapers=

Drills, Bolt and Gear Cutters, Milling Machines. Special Machinery. E.

GOULD & EBERHARDT, Newark, N. J.

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=A BLOCK PLANE,=

=WITH ADJUSTMENT FOR SETTING THE CUTTER.=

[Illustration]

=Length, 7½ inches; 1¾ inch Cutter.=

=PRICE $1.00.=

Sent by mail, to any address, postage prepaid, on receipt of price.

Price of the above Plane _without_ the adjustment, 70c. Write for an

Illustrated Descriptive Circular and Price List of our full line of

"Defiance" Metallic Planes to

BAILEY WRINGING MACHINE CO.,

99 Chambers Street, New York.

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[Illustration]

READ THIS! READ THIS!!

Adjustable Safety Stilts.

Scientific American, Vol. XXXIX.—No. 6. [New Series.], August 10, 1878 · 第 25 / 40 题