SA Supplements Vol 65 Issue 1691supp

SA Supplements

Volume 65, Issue 1691supp

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Features

Launch of the Collier “Vestal.”

A New Experiment by our Navy

Fixation of Atmospheric Nitrogen in America

George M. Heath

A Simple Form of Polariscope

Frederick H. Getman

Elements of Electrical Engineering.—XVIII

Current Reorganizers

A. E. Watson

Some Late Improvements in Compressive Riveters

Chester B. Albree

The Ytterbium Group

Heat and Building Materials

Discussion of the Austrian Coefficients

W. W. Macon

Waterproofing Cement Structures

James L. Davis

Natural Monuments

Some Curious Formations

Charles Goodman

Wyoming Coal Fields

A Simple Statement of Chamber-Lin's Hypothesis of the Earth's Origin

James Furman Kemp

Modern Biology

A Simple Statement of Its Achievements

Edmund Beecher Wilson

The Topographic Maps Prepared by the United States Geological Survey

Buoys and Beacons

Their Various Forms and Purposes

Max Buchwald

Well Waters of Southern Louisiana

Fishes and the Mosquito Problem

Their Serviceability as Mosquito Exterminators

William P. Seal

Trade Notes and Formulæ

Engineering Notes

Use of Submarine Signal Bells in Fog