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 of lectures treating of different kinds of instruments.]
[ Note on Refrigerating Apparatus.]
[ Sheet Glass from Molten Metal.—The method of making sheets of glass from the molten material and manufacture of metal plates by the same method.]
X.[VETERINARY SCIENCE.—Historical Development of the Horseshoe.—By District Veterinarian ZIPPELIUS.—Very curious investigation of the development of the horseshoe.—22 illustrations.]