Features
Salt Water Fire Protection for New York City
Electricity in Mines
Emission of N-Rays by the Human Body, Especially the Muscles and Nerves
Fleets in the Far East--An English Review of the Position of Russia and Japan
Submarine Sound Telegraphy
Safety Hook Provided with Counting Mechanism
A Powerful Compressed Air Clamp
Novel Appliances for Fighting Fire
Modern Flour Milling
The Disabled Russian Cruiser "Novik."
The Parasite of the Oak Pruner
Early Armorclads
Business and Personal Wants
Departments
- Departments
Science Notes - February 27, 1904
Legal Notes - February 27, 1904
Recently Patented Inventions - February 27, 1904
Notes and Queries - February 27, 1904
Index of Inventions - February 27, 1904
Patents - February 27, 1903
