Features
Superheated Steam
On the State of the Carbon Vaporized in Glow Lamps
The Purchase of a Reservoir Site
The Rapid Transit Subway Tunnel under the Harlem River
Test of Fireproof Stage Properties in London
The Fifth International Automobile Cup Race
Some Unusual Uses for Fire-Engines
Japanese Naval Guns
A New Life-Saving Gun
A Useful Instrument in the Niagara Falls Power House
Insulating Apparatus for Canned Goods to Prevent Ptomaine Poisoning
Business and Personal Wants
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Departments
- Departments
The Heavens in July - July 2, 1904
Correspondence - July 2, 1904
Recently Patented Inventions - July 2, 1904
New Books, Etc. - July 2, 1904
Notes and Queries - July 2, 1904
Index of Inventions - July 2, 1904
Patents - July 2, 1904