Features
The Great Equatorial of the Paris Observatory
Report on Insects
The Onion Maggot
The Breeds of Dogs
Restocking the Seine with Fish
Modern Armor
The New Compressed Air Station at Paris
The Builders of the Steam Engine— The Founders of Modern industries and Nations
Improved Hand Car
The Conic Sections
Table of Atomic Weight
The Tanning materials of Europe
An Apparatus for Heating Substances in Glass Tubes under Pressure
Testing Cement
Departments
- Departments
Patents- May 23, 1891