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Scientific American Supplement, No. 520, December 19, 1885   By:

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[Illustration]

SCIENTIFIC AMERICAN SUPPLEMENT NO. 520

NEW YORK, DECEMBER 19, 1885

Scientific American Supplement. Vol. Vol. XX, No. 520.

Scientific American established 1845

Scientific American Supplement, $5 a year.

Scientific American and Supplement, $7 a year.

TABLE OF CONTENTS.

I. ENGINEERING, ETC. Steel Structures. Best use of different grades of steel. From a paper by Mr. JAS. CHRISTIE.

Natural Gas Fuel and its Application to Manufacturing: Purposes. Paper read before the Iron and Steel Institute by Mr. ANDREW CARNEGIE. First use of the gas. Wells near Pittsburg. Extent of territory underlain with gas. Cost of piping. Analyses ofnatural gas.

A Gas Engine Water Supply Alarm. 1 figure.

The Water Supply of Ancient Roman Cities. An address by Prof. W.H. CORFIELD. Aqueducts for the supply of Borne. The aqueduct bridge Pont du Gard. The supply of Lyons. Construction of underground aqueducts.

Steam Engine Economy. By Chief Engineer J. LOWE, U.S.N. With diagram.

The "Elastic Limit" in Metals. Selection of wire for suspension bridges, etc.

Prices of Metals in 1874 and 1884. With table.

II. TECHNOLOGY. A Method of Measuring the Absolute Sensitiveness of Photographic Dry Plates. By Wm. H. PICKERING. From the proceedings of the Academy of Arts and Sciences.

Soldering and Repairing Platinum Vessels in the Laboratory. By J.W. PRATT.

The Helicoidal or Wire Stone Saw invented by M.P. GAY. With engraving of quarry showing application of saw, and 5 figures.

Portable Prospecting Drill and Automatic Safety Gear shown at the Inventions Exhibition. With 2 engravings.

III. ELECTRICITY, ETC. Electricity in Warfare. By Lieutenant B.A. FISKE, U.S.N. Electrical torpedoes. Torpedo detecter. Military telegraphy and telephony. Electricity for firing great guns. Arrangement of wires for lights. The search light. Incandescent lamps for sight signaling. Electrical launches. An "electric sight".

Meucci's Claims to the Telephone. With description of his instrument and 10 figures.

An Electric Centrifugal Machine for Laboratories. By ALEX. WATT. From paper read before the British Association. 1 figure.

Transmission of Power by Electricity. Experiments of M. MARCEL DEPREZ.

IV. ART AND ARCHITECTURE. Quadriga for the New House of Parliament at Vienna. An engraving.

Glazed Ware Finial. With engraving.

Hotel de Ville, St. Quentin. With engraving.

Fire Doors in Mills. From a lecture before the Franklin Institute by C.J. HEXAMER.

V. NATURAL HISTORY, ETC. Preservation of Insects.

An Accomplished Parrot.

The Roscoff Zoological Laboratory. The buildings and rooms. The aquarium. Course of study.

The Murænæ at the Berlin Aquarium. With engraving.

Metamorphosis of Arctic Insects.

VI. MEDICINE. ETC. A Year's Scientific Progress in Nervous and Mental Diseases. By Prof. L.A. MERRIAM. Report to the Nebraska State Medical Society.

Scaring the Baby Out.

VII. MISCELLANEOUS. Wage Earners and their Houses. Manufacturers as landlords. Experiments of Pullman, Owen, Peabody, and others.

The Locked and Corded Box Trick, with Directions for making the Box. By D B. ADAMSON. 9 figures.

A Perpetual Calendar. With engraving.

PRESERVATION OF INSECTS.

To remove the verdigris which forms upon the pins, the pinned insects should be immersed in benzine and left there for a time; several hours is generally long enough. The administration of this bath cannot be too highly recommended for beetles which have been rendered unrecognizable by grease, especially when dust has been mixed with the grease... Continue reading book >>


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