SCIENTIFIC AMERICAN SUPPLEMENT NO. 819

NEW YORK, SEPTEMBER 12, 1891.

Scientific American Supplement. Vol. XXXII, No. 819.

Scientific American established 1845

Scientific American Supplement, $5 a year.

Scientific American and Supplement, $7 a year.

TABLE OF CONTENTS.
I.	ASTRONOMY.—The Story of the Universe.—By Dr. WILLIAM HUGGINS.—A valuable account of modern views of the formation of the universe, and of modern methods of studying the problem.—1 illustration.
II.	ELECTRICITY.—The Production of Hydrogen and Oxygen through the Electrolysis of Water.—A valuable paper on the electrolysis of water on a large scale, with apparatus employed therefor.—4 illustrations.
III.	MECHANICAL ENGINEERING.—An English Steam Fire Engine.—A light fire engine built for East Indian service.—1 illustration.
IV.	MEDICINE AND HYGIENE.—A Case of Drowning, with Resuscitation.—By F.A. BURRALL, M.D.—A full account of a remarkable case of resuscitation from drowning, with full details of treatment.
V.	METALLURGY.—How Gas Cylinders are Made.—The manufacture of cylinders for highly compressed gases, a comparatively new and growing industry.—6 illustrations.
	Refining Silver Bullion.—The Gutzkow process in refining silver bullion with sulphuric acid.—1 illustration.
	The Treatment of Refractory Ores.—A new process for the extraction of metal from refractory ore.—1 illustration.
	Weldless Steel Chains.—An exhaustive examination of this curious process, and very full illustrations.—43 illustrations.
VI.	METEOROLOGY.—Climatic Changes in the Southern Hemisphere.—By C.A.M. TABER.—Causesof the climatic changes the southern hemisphere has undergone.
VII.	MILITARY TACTICS.—The System of Military Dove Cotes in Europe.—Continuation of this paper, treating of the pigeon service in France, Germany, and Italy.
VIII.	NAVAL ENGINEERING.—The Isle of Man Twin Screw Steamer Tynwald.—A high speed steamer, with a steady sea-going speed of between 18 and 19 knots.—2 illustrations.
IX.	TECHNOLOGY.—Ammonia.—The manufacture of ammoniacal gas for technical uses.—Full details of its production.
	Musical Instruments.—Their construction and capabilities.—By A.J. HIPKINS.—Second installment of this highly interesting series o ... BU KİTABI OKUMAK İÇİN ÜYE OLUN VEYA GİRİŞ YAPIN! Sitemize Üyelik ÜCRETSİZDİR!