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Scientific American Magazine Vol 90 Issue 11

Scientific American Magazine

Volume 90, Issue 11

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Features

Report of the Army Board as to the Usefulness of the Lake Type of Submarine Boat for Coast Defense

The Darlington Apartment House Disaster

A Year's Battleships in England

Results of Recent Experiments with N-Rays

Examination of the Emanations Given off by Radium

The Tygard Reciprocating-Cylinder Double-Action Gasoline Motor

The Development of the High-Speed Launch or Automobile Boat

The Japanese Destroyers

Two Interesting Animals at the New York Zoological Park

The Lesson of the Baltimore Fire

Day Allen Willey

Official Test of the Lake Submarine Boat "Protector"

Queer Hiding Place for Bees

Helen Lukens Jones

Departments

Correspondence - March 12, 1904

Recently Patented Inventions - March 12, 1904

Index of Inventions - March 12, 1904

Business and Personal Wants - March 12, 1904

Patents - March 12, 1904