Departments
- Letters
Correspondence - February 13, 1897
- Recommended
Recently Patented Inventions - February 13, 1897
New Books and Publications - February 13, 1897
- Departments
Index of Inventions - February 13, 1897
Notes and Queries - February 13, 1897
Business and Personal - February 13, 1897
Patents - February 13, 1897