Departments
- Letters
Correspondence - July 29, 1899
- Recommended
New Books, Etc. - July 29, 1899
- Departments
The Heavens in August 1899
Recently Patented Inventions - July 29, 1899
Notes and Queries - July 29, 1899
To Inventors - July 29, 1899
Index of Inventions - July 29, 1899
Business and Personal - July 29, 1899