Departments
- Letters
Correspondence- November 22, 1890
- Recommended
New Books and Publications- November 22, 1890
- Departments
Recently Patented Inventions- November 22, 1890
Business and Personal- November 22, 1890
Notes and Queries- November 22, 1890
Index of Inventions- November 22, 1890
To Inventors- November 22, 1890