SCIENTIFIC AMERICAN SUPPLEMENT NO. 286

NEW YORK, JUNE 25, 1881

Scientific American Supplement. Vol. XI, No. 286.

Scientific American established 1845

Scientific American Supplement, $5 a year.

Scientific American and Supplement, $7 a year.

TABLE OF CONTENTS.
I.	ENGINEERING AND MECHANICS.--One Thousand HorsePower Corliss Engine. 5 figures, to scale, illustrating theconstruction of the new one thousand horse power Corliss engine, byHitch, Hargreaves & Co.
	Opening of the New Workshop of the StevensInstitute of Technology. Speech of Prof. R.W. Raymond, speech ofMr. Horatio Allen.
	Light Steam Engine for Aeronautical Purposes.Constructed for Capt. Mojoisky, of the Russian Navy.
	Complete Prevention of Incrustation in Boilers.Arrangement for purifying boiler water with lime and carbonate ofsoda.--The purification of the water.--Examination of the purifiedwater.--Results of water purification.
	Eddystone Lighthouse. Progress of thework.
	Rolling Mill for Making Corrugated Iron. 1 figure.The new mill of Schultz, Knaudt & Co., of Essen,Germany.
	Railway Turntable in the Time of Louis XIV. 1figure. Pleasure car. Railway and turntable at Mary-le-Roy Chateau,France, in 1714.
	New Signal Wire Compensator. Communication from A.Lyle, describing compensators in use on the Nizam State Railway,East India.
	Tangye's Hydraulic Hoist. 2 figures.
	Power Loom for Delicate Fabrics. 1figure.
	How Veneering is Made.
II.	TECHNOLOGY AND CHEMISTRY.--The Constituent Partsof Leather. The composition of different leathers exhibited at theParis Exhibition.--Amount of leather produced by different tonnagesof 100 pounds of hides.--Percentage of tannin absorbed underdifferent methods of tanning.--Amounts of gelatine and tannin inleather of different tonnages, etc.
	Progress in American Pottery.
	Photographic Notes.--Mr. Waruerke's NewDiscovery.--Method of converting negatives directly intopositives.--Experiments of Capt. Bing on the sensitiveness of coaloil--Bitumen plates.--Method of topographic engraving. ByCommandant DE LA NOE.--Succinate of Iron Developer.--Method ofmaking friable hydro-cellulose.
	Photo-Tracings in Black and Color.
	Dyeing Reds with Artificial Alizarin. By M.MAURICE PRUD'HOMME.
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