Features
The Electric Railway Trolley
Prices at the World's Columbian Exposition
One Hundred and Twelve and One Half Miles Per Hour
The World's Columbian Exposition-- the Pope's Phonographic Message to America
The Crossing of Rivers by Means of Leathern Bottles
A Viking Ship
Simple Hygroscope
A Measuring and Drawing Tool
An Improved Calking Tool
The Trumpeters
To Inventors - May 20, 1893
Departments
- Letters
Correspondence - May 20, 1893
- Recommended
New Books and Publications - May 20, 1893
- Departments
Recently Patented Inventions - May 20, 1893
Notes and Queries - May 20, 1893
Business and Personal - May 20, 1893
Index of Inventions - May 20, 1893
Patents - May 20, 1893
