Volume 31, Issue 25
You are currently logged out. Please sign in to download the issue PDF.
Features
Two Typical Experiments
The Patent Office Again
Publishers' Card
Mica Mines in North Carolina
How to Investigate Spiritualism
Tyndall on Typhoid
Floating Fire Engines
New Cloth-Singeing Machine
The Crystallization of Glass
The Normal College, New York City
Apid Estimation of Phosphoric Acid, Magnesia, and Lime
Pendulum Governors
Coppen's Improved Transplanter
Improved Spike Extractor
The Ericsson Pneumatic Torpedo
The Hymenocalyx Undulata
The Yuccas
Electro-Deposition of Metals
The Constitution of the Sun
Number I