Progress of Zoology
American Pioneers in Deep Sea Exploration
Features
The Okapi and its Native Wilds
Labor's Share
Three Times Capital's Reward in Productive Industry
Deep Wells that Feel the Sea
The Electrolytic Theory of the Corrosion of Iron.—II
The Real Cause of Iron Rust
Distant Operation by Hertzian Waves
Garet's Apparatus
A Novel System of Wireless Telephony
The Development of Armored War Vessels.—II
Armor Plating in the United States
The Rise of Man
A Study in Evolution
Tomatoes that Imitate Fruit
The Eccentricities of a Common Vegetable
Photographic Plate Testing
Share which Manufactures Form of the Exports to the Various Sections of the World
Mosquito Extermination Work
An Account of Work in Massachusetts
The Karawanken Tunnel
The Construction of a Great Engineering Work
The Modern Locomotive
The Types which have been Evolved
Glacial Studies in the Sierra Nevada
Census of Metal-Working Machinery
Correspondence
The Periyar Irrigation Project
