We use cookies to provide you with a better onsite experience. By continuing to browse the site you are agreeing to our use of cookies in accordance with our Cookie Policy.

Skip to main content

Features

Transmission of Messages through the Air by Electricity without Wires

By John Trowbridge

Electric Motive Power on Elevated Railways

By William Nelson Smith

Wire Ropeways, with Notes on the Plomosas Line

By B. McIntire

Oscillating Hot Saw

Purdy's Armored Twin War Vessel

A Multiple Portrait

Stereotyping

By Thomas Bolas

Glycerine

Automatic Apparatus for the Manufacture of Carbonated Waters

An Astronomer's Imaginary Visit to Venus

Photographic Equatorial Telescope

Galls on Lime

The White Oak

Culture of Fruit Trees under Glass

Building Plans and Specifications

Action of Hydrogen Gas on Pig, Steel, and Iron

Useful Engineering Books

Departments

Purchase To Read More

Already purchased this issue? Sign In to Access
Select Format
February 21, 1891

Complex Causes. Alternative Solutions.

Learn More