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.
III. ELECTRICITY, PHYSICAL SCIENCE, ETC.--On Faure's Secondary Battery.
Physical Science in Our Common Schools.
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