The Celestial World

The Magazine Gun as a Military Arm

Steam Cruiser Atlanta, U. S. N.

Beet Sugar Manufacturing Processes

Improved Shuttle Cushioner for Power Looms

Carrier for Ash Pans

A Night Sight for Ordnance

Device for Detaching Horses from Vehicles

Improved Camera Shutter

The Hudson River Tunnel

A Self-Cleaning Metal Valve

New Armored Cruiser for the Spanish Navy

A Large Casting

The Berdan Torpedo Boat

James Dwight Dana

Science in Toys

X

Polarized Light

Miscellaneous Inventions - May 21, 1887

Special - May 21, 1887

The Test by Results

Engineering Inventions - May 21, 1887

Agricultural Invention - May 21, 1887

To Inventors - May 21, 1887