Features
Position of the Planets in January
Date Boundary Line
How to Judge the Quality of Condensed Milk
A Device for Developing the Lungs and Enlarging the Chest
An Improved Trap
A Device to Cool or Heat Liquids
A Window Opening and Closing Device
Plate Rolling at the Krupp Works, Essen
Improved Oil Light Lantern
A Separable Ocean Steamer Built on Lake Michigan
A Military Suspension Bridge
Optical Illusions Adapted to the Lantern
Repairing the Steamship La Champagne with an Adjustable Bow and Stern Dock
A Double Type Composing Stick
Departments
- Letters
Correspondence- December 27, 1890
- Departments
Recently Patented Inventions- December 27, 1890
Business and Personal- December 27, 1890
Index of Invention- December 27, 1890
To Inventors- December 27, 1890
Index- December 27, 1890
