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SA Supplements Vol 61 Issue 1584supp

SA Supplements

Volume 61, Issue 1584supp

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Features

The Rapid Growth of Birds

B. S. Bowdish

The Discovery of the Source of the Zambesi River

Insect Engineering

Artificial Gems

Manufacture and use of Concrete Piles

Henry Longcope

Reservoir, Fountain, and Stylographic Pens.—V

Fountain Pens

James P. Maginnis

Valuable Alloys.—IV

Speculum Metal

The Domestic Life of Animals

Th. Zell

The Relations between Climates and Crops

Cleveland Abbe

A Speed and Mileage Recorder for Automobiles and Railroads

Observations and Suggestions concerning Lightning Rods

Tangent Galvanometer

The use of Divers in Mining

Reminiscences of Seventy-One Years in the Cotton Spinning Industry

Stephen A. Knight

The Early use of Iron

Engineering Notes

Science Notes

Electrical Notes

Trade Notes and Formulæ