Features
Exhibition of the New York Microscopical Society
Position of the Planets in May
An Improved Gas Engine
A Motor to Drive Small Machines
A Trace-Holding Whiffletree Attachment
An Improved Car Door
The Grant Monument
Interesting Tricks
Logging in Minnesota
The British First Class Cruiser Edgar
Novel Toys
Departments
- Letters
Correspondence
- Recommended
New Books and Publications- April 30, 1892
- Departments
Recently Patented Inventions- April 30, 1892
Notes and Queries- April 30, 1892
Index of Inventions- April 30, 1892
Business and Personal- April 30, 1892
