Features
Electro-Dynamic Illustration
The Telephone on a Volcano
Its Use in Detecting Subterranean Sounds
Curious Sensations of Heat
Electrical Clock Dials
Newhaven Harbor, England
Institution of Civil Engineers, London
Eight Horse Power Traction Engine
A Belgian Rag House
Huch's Densimeter
Welding of Powders by Pressure
Improved Zinc Bath for Galvanizing Iron
Variability of the Sun's Surface
Improved Wool Drying Machinery
Progress of Photography in Russia
Chemical Notes
An Improved Saponifier
Experimental Physiology
Demonstrator of Experimental physiology in the University of Pennsylvania
