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SA Supplements Vol 31 Issue 785supp

SA Supplements

Volume 31, Issue 785supp

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Features

Dissemination of Plants

Pinus Ponderosa

The Catalpa

The Outlook for Applied Entomology

The Moon not a Globe

The Mechanism of Infection

Views in St. Helena

Action of Light on Phosphorus

The Economical Angle

Frederic R. Honey

Ambrose Godfrey's Fire Extinguisher

Fabrication of Twelve-Inch Mortars

A. A. Fuller, F. N. Connet

Is the Air Navigable?

Some Recent Construction of Railway Bridges

James Ritchie

The Arts of the Blind

The History of the Cotton Spinning Mule and its Inventor

Aug. Stadler

A New Stand

Improved Process for the Manufacture of Maple Molasses

Electric Welding

The Electromagnet

Silvanus P. Thompson

Thermometer with Electric Transmission

Manufacture of Aluminum and other Metals

Building Plans and Specifications

Useful Engineering Books

For Diphtheria

Departments

Patents!- January 17, 1891