Features
The Guardian of Ninety Million Stomachs
Dr. Harvey W. Wiley ot the Bureau of Chemistry
The Battleship “Utah”
Our Latest Dreadnought
A Sundial as an Accurate Time-piece
A Spot of Light That Tells the Time of Day
Casting Cement Building Walls on the Ground
A Church Built in a Novel Way
Abstracts from Current Periodicals- July 29, 1911
Phases of Science as Other Editors See Them
The Original Paper Makers
The Paper Wasp and its Life from Egg Until Death
Making Oxygen in Moderate Quantities
Simple Electric Furnace
An Experiment with Aluminium Powder
The Inventor's Department- July 29, 1911
Simple Patent Law; Patent Office News; Inventions New and Interesting
1912 Prospects for Automobile Industry
Departments
- Letters
Correspondence- July 29, 1911
- Recommended
New Books, Etc.- July 29, 1911
- Departments
The Heavens in August 1911
Recently Patented Inventions- July 29, 1911
Notes and Queries- July 29, 1911
