Departments
- Letters
Correspondence- January 21, 1893
- Recommended
New Books and Publications- January 21, 1893
- Departments
Recently Patented Inventions- January 21, 1893
Notes and Queries- January 21, 1893
Index of Inventions- January 21, 1893
Business and Personal- January 21, 1893
Patents- January 21, 1893