Features
A World's Congress of Academies
The N-Rays: Are They Real or Illusory?
Charles H. Haswell's Ninety-Fifth Birthday
Belgian and American Electric Lifting Magnets
Electrically-Operated Versus Steam-Driven Mine Hoists
New form of Radiation
Electrochemical Phonograph
The Japanese Naval Disasters
The Manufacture of Straw Hats
The Petroleum Reservoirs of California
Wreck of the Russian Cruiser Bogatyr
An Arcade for New York City
The Pielock Superheater System
Photography of Jupiter's Satellites
Rock Drill Attachment
A Novel Fly-Catcher
Patent Department
Improved Railway Chair
Compensating Device for Rope Tramways
An Improved Portable Tent
Device for Distributing Noxious Fumes
A Clothing Rack
A Tension Regulator for Overhead Cables
Business and Personal Wants
Departments
- Departments
The Heavens in June - June 4, 1904
Correspondence - June 4, 1904
Recently Patented Inventions - June 4, 1904
Notes and Queries - June 4, 1904
Index of Inventions - June 4, 1904
New Books, Etc. - June 4, 1904
Patents - June 4, 1904
