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Features

Wegmann's Porcelain Cylinder Mill

The Iron Railway Bridge Over the Saint Leger Valley, France

Improved Reversible Lifeboat

Wheel and Rail for Common Roads

The New Palace of Fine Arts at Rome

Collecting and Working-Up Photographic Residues

Field Telegraph without Battery

Practical Methods of Intensifying Gelatine Plates with Silver

The Quadrant Electrometer

A Review of the Doctrine of Ether Waves and of the Material Nature of Light

By Ellen R. Prescott

The Analysis of Milk

Extraction of the Precious Metals from all Kinds of Ores by Electrolysis

By Blas and Miest

The Chemistry of Lignification

By C. F. Cross and E. J. Bevan

Pneumonia

By Francis Delafield

Cypripedium Sedeni X

Bee Culture in India

The Big Winners

Trotting Statistics

British Columbia—Its Climate, Resources, and People

The Devil's Pit

By John D. Parker

Nutritive Value of Skim Milk

By J. Konig

Tellurium in Copper

By T. Egleston

Patents

Sulphur in Italy

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