SA Supplements Vol 62 Issue 1598supp

SA Supplements

Volume 62, Issue 1598supp

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Features

Gas-Engine Ignition

The Excavation for the Pennsylvania Railroad Station, New York

The First Railway in America

E. W. Hilgert

With the Baltic fleet at Tsushima

R. D. White

Chimney Draft

W. W. F. Pullen

A New Type of Hydraulic Press for indenting and Heading Cartridge Cases for Quick-Firing Guns

Tubes in Cement

Growth of Foreign Commerce of the United States during decade 1896--1906

M. Leduc's Experiments

The Paris Correspondent of Scientific American.

A New Respiratory Helmet

The San Francisco Lesson

F. W. Fitzpatrick

New Results in Heredity and Evolution

G. Gordon Copp

The Intellectual Value of Tool Work

Marsh Reclamation as a Preventive of Mosquito Generation—Commercial uses of Reclaimed Marshes

The Pressure of Explosions—Experiments on Solid and Gaseous Explosives

J. E. Petavel

Efficiency of Illuminants

Contemporary Electrical Science

The Tall Mountains of the World

Day Allen Willey

Electrical Notes

Engineering Notes

Science Notes

Trade Notes and Formulæ