Volume 70, Issue 1809supp
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Features
Mother-of-Pearl
A Curious Industry of the Society Islands
The Surface Dimensions of Paper
Southeastern Alaska
A Precision Slide Rule
Hoisting Boats Electrically
The Anderton Electric Driven Canal Boat Elevator
Foundry Flasks—United States Standard
Light and Electromagnetism
Electric Waves and the Electromagnetic Theory of Light
Tele-Photography
A System of Transmitting Optical Images Electrically
Some Minute Phenomena of Electrolysis
How Fish are Hatched.—II
Fish-Cultural Practices in the United States Bureau of Fisheries
Principles of Mechanical Flight
Some Figures Relating to Flights of Birds
A Turbo-Electric Locomotive
New Investigations in Physics
Interesting Studies from Different Sources
Killing Germs by Light
Ultra-Violet Rays and the Sterilization of Liquids
Preservative Treatment of Farm Timbers
What Every Farmer Should Know.
A New Method of Identifying Persons
The Veins on the Back of the Hand