Features
The Industrious Photographer
All Pictures Are Not Pleasing; but with the Aid of Brush, Scissors, Paste and a Fresh Exposure, Several Mediocre Prints Can Be Combined to Make One Negative of Merit
Some Aviation Economics
What Are We to Do with the Vast Industries After the Sword Is Sheathed?
Salvaging the Steamship "St. Paul"
How a 13,000-ton Ship, Lying on Her Side Many Feet Under Water, Was Rolled Over and Floated
A Successful Cotton Picker, The Federal Government's Mussel Farm, and more
The Current Supplement- October 19, 1918
Quantitative Spectrum Analysis, Test Without Destruction as Achieved by the Permeameter, and more
Departments
- Letters
Correspondence- October 19, 1918
- Departments
The Service of the Chemist- October 19, 1918
The Motor-Driven Commercial Vehicle- October 19, 1918
Recently Patented Inventions- October 19, 1918
