SA Supplements

January 1885

Volume 19, Issue 473supp

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Features

Improved Spinning Mule

Lubricating Oils

Measurements of Friction of Lubricating Oils *

C. J. H. Woodbury

Copying Maps and Plans

Photographic Surfaces More Sensitive for the Green, Yellow, and Red Rays

H. W. Vogel

Improved Tandem Engines

The Saint Etienne Tramways

Spring Motors for Vehicles

The Dutton Sluices

Improved Spring Wheels

Combined Wood and Iron Wheels for Portable Engines

On the Influence of Punching Holes in Soft Steel

V. N. Beck Guerhard

On Japanese Camphor Oil

H. Oishi

A Veranda

The World's First Meridian

Richard A. Proctor

Transmission of Electric Power at Bienne, Switzerland

Photographing the Larynx

Thomas R. French

Obstruction of Drain Pipes by Roots

F. A. Calkins

The Hypnoscope

Iceland

J. Starkie Gardner

A Group of Cactus in Jamaica

Reduction by Electrolysis

Water Meters

Underground Water ad the Moisture of the Soil

FR. Hofmann