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