Features
A Machine That Remembers and Forgets, Universal Sun-dial
In Quest of Sunken Treasure
Spherical Car for Deep Sea Salvage Work
The Paris Observatory and Its Work
The History of a Famous Institution
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
