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Features

Panama Canal Open to Large Ocean Liners, The First National Bird Census and more

A Machine That Remembers and Forgets, Universal Sun-dial

By W. H. Dearden

In Quest of Sunken Treasure

Spherical Car for Deep Sea Salvage Work

By C. L. Edholm

The Paris Observatory and Its Work

The History of a Famous Institution

By George A. Hill

Plant Autographs and What They Mean

An Investigation Which Proved That Plants Have the Same Sensations as Animals

The Death of Lieut. Munby

A brief obituary of a former associate editor of Scientific American

Departments

  • Departments

    Correspondence - March 13, 1915

  • The Heavens in March

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The Essential Guide to the Modern World

The Essential Guide to the Modern World