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Pipe Galleries for the Rapid Transit Subway

New Process for Plaster of Paris

Remarkable Results at Sandy Hook

The Growth of London and New York

Forestry in India and Canada

New Trans-Pacific Cable

Wild Animals in Winter

By Charles Frederick Holder

A Hydraulic Bicycle Joint

Russian Bayonet Exercises

The Popoff-Ducretet Apparatus for Wireless Telegraphy

Government Tests of Maximite at Sandy Hook

Some Features of the New York Rapid Transit Tunnel

The "Shamrock" Under Sail

An Ice Fountain

The Amateur in Photomicrography

By W. F. Watson

An Interesting Insect--Thyridopteryx EphemerFormis

By N. Hudson Moore

Business and Personal Wants


  • Departments

    Science Notes - May 25, 1901

  • Recently Patented Inventions - May 25, 1901

  • Notes and Queries - May 25, 1901

  • Index of Inventions - May 25, 1901

  • Patents - May 25, 1901

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