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Apparatus for Providing a Steady Platform for Guns, Search Lights, Telescopes, Etc.

H. M. S. Victoria

The Birmingham Compressed Air Power Supply

The Production of the Alloys of Aluminum and Silicon in the Electric Furnace (Cowles' Process)

By J. H. J. Dagger

Improved Refrigerating Machinery

Filtering Arrangement

By C. R. Gyzander

The Manufacture of Rubber Clothing

The Construction of Balloons

By Carl E. Myers

Painting in Sand

The Pavilion of Paraguay at the French Exposition

The Highest Chimney in the World

The Method of Quarter Squares

Magnesium as a Reagent

By H. N. Warren

International Placards at the Exposition

A Trip through the Sewer in Hamburg

Instruments for Measuring Radiant Heat

Lecture II.

By O. V. Boys

Constant Focus and Depth of Focus in Photographic Lenses

By William A. Cheyney

Atmospheric Electricity

Glacial Geology

By James Geikie

Building Plans and Specifications

Useful Engineering Books



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    Patents- November 30, 1893

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