SA Supplements Vol 66 Issue 1696supp

SA Supplements

Volume 66, Issue 1696supp

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Features

Automatic Cab-Signa Ling

A Discussion of Modern Railway Safety Devices

J. Pigg

Piston Speed and Steam Engine Economy

R. L. Weighton

Mechanical Flight

Slowness and Not Speed the Desideratum

New Form of Grip-Jaw Clutch Coupling

Locomotive Weighing Machine

City Refuse and its Disposal

A Difficult Metropoliten Problem

H. De B. Parsons

Studying the Condor in its Native Haunts

William L. Finley

Fungi Destroying Eastern Forests

The Diseases of Trees

William Hosea Ballou

Korn's New Telephotographic System.—I

Sending Pictures by Wire from Paris to London

Formic Acid as a Substitute for Acetate of Lime

Electrical Notes

Trade Notes and Formulæ

Engineering Notes