Features
Population of the American Colonies
The Smoke Nuisance and the Railroads
Considered from the Economical and Geological Standpoint
A Year's Experience with a Suction Power Plant
Eiffel Tower Device for Showing Hour
The Time Indicator of Paris
Definitions of Electrical Terms
New Dust Preventives
The use or Water and Salt Solutions
A New System of Welding
“Ferro-Bronzes”
Some New Alloys and their Composition
Radium Rays and Plant Life Processes
Some Interesting Discoveries
Artificial Gems Past and Present
Imitating Nature in the Laboratory
A Simple Vapor Pressure Apparatus
Sub-Aqueous Photography.—II
Photographing Aquatic Animals in their Natural Environment
Animal Fats and Oils
Some Manufacturing Processes
The Passing of the Whale
Trade Notes and Formulæ
Electrical Notes
Engineering Notes
Departments
- Departments
Correspondence
