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Features

A Visit to the Slate Quarries of Angers

Graduate and Post-Graduate Engineering Degrees

By Geo. F. Swain

Great Circle Sailing

Graduate and Post-Graduate Degrees

By R. H. Thurston

The Cost of the New Navy

Wind Motors, Ancient and Modern

By Sidney H. Hollands

Joshua Reynolds

Apparatus for Transforming Photographs

Pneumatic Tires and Reclaimed Rubber

The New Protestant Cathedral, Berlin

Some Differences between the English and American Plumber

New Cellulose Derivatives

By Clayton Beadle

The Gulf Stream

The Earthquake in Turkey

Greek Papyri in Egypt

Paestum, Amalfi, Sorrento

Progress of the Excavations at Delphi

A Prolonged Sunspot Minimum

By E. Walter Maunder

Roman Remains at Bath, England

The Nandu-An Ornithological Sketch

By Adolf Erich Boecking

Two Curious Animals in the Dresden Zoological Garden

The Use of India Rubber and Gutta Percha in Medicine

By A. E. Davis

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    September 01, 1894

    Beyond XX and XY

    Biology. Identity. Equality.