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SA Supplements Vol 52 Issue 1349supp

SA Supplements

Volume 52, Issue 1349supp

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Features

Some Celebrated Long-Span Stone Arch Bridges

Enameling.—I

General Specifications for a Gasoline Motor Car

H. Ward Leonard

Novel Power Storage

The Horse Power of Gas Engines

The Prat Pressure Transformer

The Hering Variable Speed Gear

The “Boreas” Air Compressor

Petroleum from the Beaumont, Texas, Field

Clifford Richardson, E. C. Wallace

Electrograph for Atmospheric Discharges

Production of Paints in Ancient Times

Contemporary Electrical Science

The Roze “Aviator”

An Effective Depilatory

Luminosity Obtained from Certain Organic Compounds

Anthropology

D. J. Cunningham

Japanese Plants in American Gardens

A Very Ancient Method of Paddle Propulsion

The Phosphates in Strawberry Culture

Sorghum Sirup Manufacture

A. A. Denton

Trade Suggestions from United States Consuls

Trade Notes and Receipts