Enerǵetics and Cultural History
A Chapter of Ostwald's Philosophy
Features
Manganese in Steel Production
The Chemistry of Sewaǵe Disposal
Chemical Action the Basis of Every Successful Method
Insects Destructive to Books
Some of the Pests that Play Havoc With Our Libraries
Human Evidence of Evolution
Is Natural Selection Dependent on Small Variations or on Large Mutations?
Colorinǵ and Frostinǵ Incandescent Lamps
The Kinematoǵraph as an Aid to Mathematical Instruction
How Irriǵation Founded a Scientific University
A Center for Technical Education in Arizona
Stereoscopic Vision
The Crossed and Direct Method of Viewing Objects
The Mode of Propaǵation of Infantile Paralysis
The Bedbug as a Spreader of Disease
Fumigation by Iodine
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
The Present Status of the Diesel Enǵine in Europe.—I
And a Few Reminiscences of the Pioneer WorK in America
Trespassers Killed on Railways
Who are they?
