Features
Engineering, Electricity, Science- April 30, 1910
A Railway School for Farmers
A Reaper Boat
The Elevator Installation of the Metropolitan Life Tower, An Ingenious Way of Examining the Contents of the Duodenum
Halley's Comet.--A Model of its Orbit
The Motor-Boat Races at Monaco
The Manufacture of Celluloid
Telescope Lenses and How to Test Them
Some Extraordinary Densities
Making Milk Artificially
A Small Electric Furnace
Departments
- Letters
Correspondence- April 30, 1910
- Recommended
New Books, Etc.- April 30, 1910
- Departments
Recently Patented Inventions- April 30, 1910
Index of Inventions- April 30, 1910
