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Various

"Scientific American Supplement No. 819, September 12, 1891"

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.--Causes of 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.


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