I. ENGINEERING AND MECHANICS.--One Thousand Horse Power Corliss Engine.
5 figures, to scale, illustrating the construction of the new one
thousand horse power Corliss engine, by Hitch, Hargreaves & Co.
Opening of the New Workshop of the Stevens Institute of Technology.
Speech of Prof. R.W. Raymond, speech of Mr. 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 of soda.--The
purification of the water.--Examination of the purified
water.--Results of water purification.
Eddystone Lighthouse. Progress of the work.
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. 1 figure. 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. 1 figure.
How Veneering is Made.
II. TECHNOLOGY AND CHEMISTRY.--The Constituent Parts of Leather. The
composition of different leathers exhibited at the Paris
Exhibition.--Amount of leather produced by different tonnages of 100
pounds of hides.--Percentage of tannin absorbed under different
methods of tanning.--Amounts of gelatine and tannin in leather of
different tonnages, etc.
Progress in American Pottery.
Photographic Notes.--Mr. Waruerke's New Discovery.--Method of
converting negatives directly into positives.--Experiments of Capt.
Bing on the sensitiveness of coal oil--Bitumen plates.--Method of
topographic engraving. By Commandant DE LA NOE.--Succinate of Iron
Developer.--Method of making friable hydro-cellulose.
Photo-Tracings in Black and Color.
Dyeing Reds with Artificial Alizarin. By M. MAURICE PRUD'HOMME.