Volume 104, Issue 17
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Features
Wilhelm Ostwald
A Leader in Modern Philosophy of Science
The Voisin "Canard" Biplane
How Gabriel Voisin Invented His Biplane Christened the "Duck"
A Painting in Glass on a Canvas of Concrete
Mosaic Curtain of the Mexican National Theater
American Merchant Marine
An Expert Analysis of an Important Economic Problem
Science in the Current Periodicals - April 29, 1911
In this Department the Reader will find Brief Abstracts of Interesting Articles Appearing in Contemporary Periodicals at Home and Abroad
Curiosities of Science and Invention - April 29, 1911
Experiments on Light
Copper Connections for Battery Carbons
The Inventor's Department - April 29, 1911
Simple Patent Law; Patent Office News; Inventions New and Interesting