Features
The Composition of the Upper Atmosphere
Honor to Whom Honor is Due
Electricity
Science
Engineering
An Automatic Electric Fog-Signaling Apparatus for Railroads
Rat Destruction by Electric Current
Portable Outlooks for Artillery Trains
Early Suggestions of Invading England by Balloon
A Heat Paradox
Latin-American Trade
Trees as Witnesses in Early Surveying
Sheet Lightning
Commander Peary's Discovery of the North Pole
How Cook Made His Latitude Observations
Capt Cody's British Army Aeroplane
A Cheap Lamp Rheostat
Vise for Polished Pipe
Handy Man's Workshop
Simple Tapered Reamer
Temporary Repairs to Broken Springs
The Cold Process of Making Sirup
Departments
- Departments
Correspondence
Index of Inventions
Patents
Recently Patented Inventions
