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Enerǵetics and Cultural History

A Chapter of Ostwald's Philosophy

By Henry Hess

Manganese in Steel Production

The Chemistry of Sewaǵe Disposal

Chemical Action the Basis of Every Successful Method

By Geor*amp*gacute;e G. Nasmith

Insects Destructive to Books

Some of the Pests that Play Havoc With Our Libraries

By William R. Reinick

Human Evidence of Evolution

Is Natural Selection Dependent on Small Variations or on Large Mutations?

By A. M. Gossa*amp*gacute;e

Colorinǵ and Frostinǵ Incandescent Lamps

By A. S. Neumark

The Kinematoǵraph as an Aid to Mathematical Instruction

How Irriǵation Founded a Scientific University

A Center for Technical Education in Arizona

By Day Allen Willey

Stereoscopic Vision

The Crossed and Direct Method of Viewing Objects

By Frederic Campbell

Fumigation by Iodine

The Mode of Propaǵation of Infantile Paralysis

The Bedbug as a Spreader of Disease

A Hiǵh-Power Oil Enǵine for Tuǵboat Service

Another Step in the Spread of the Marine Diesel Enǵine

The Cause of the Souring of Milk in Thunderstorms

The Problem of Selenium

The Ether

A Summary of the Evidence for and Against its Existence

By P. G. Nuttin*amp*gacute;

The Present Status of the Diesel Enǵine in Europe.—I

And a Few Reminiscences of the Pioneer WorK in America

By Rudolph Diesel

Trespassers Killed on Railways

Who are they?

By Frank V. Whitin*amp*gacute;

Science Notes

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    May 11, 1912

    Think Outside the Gift Box