Volume 69, Issue 1779supp
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Features
Friction Clutches
Their Principles Of Design
A New Valve Gear for Gas Engines
A Simple Mechanism Free From Back-Action
A Remarkable Automobile Chart
A Mechanical Sign Post
Wireless Telegraphy not Affected by Magnetic Storms
Radio-Activity of Ordinary Matter
The Present State of the Physical Chemistry of Colloids
The German “Dreadnoughts”
What is the “Nassau” Type ?
Stammering
With some Suggestions as to Modern Methods
The Frequency of Heart Beats in the Mouse
Heat and Musical Pitch
The Influence of Temperature on Instruments
To make Lime without a Kiln
Paris and its Tunnels
The Los Angeles Aviation Meet
The Errant Eel
The Transfomations and Migrations of a Strange Fish
The Structure of the Vowel Sounds
How we Speak
The World'S Sugar Supply
Sugar Cane And Beet
An African Elephant Farm
A Forerunner of Copernicus
Forgotten Nicole Oresme