Volume 105, Issue 20
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Features
Hugo de Vries
Famous for his Mutation Theory of Descent
New Atlantic-Type Locomotives for the Anglo-Scottish Expresses
Increasing Use Abroad of Large Boilers and Heavier Loads on Drivers
Abstracts from Current Periodicals- November 11, 1911
Phases of Science as Other Editors See Them
Results of the Glidden Tour
Lessons to be Learned from the Annual Automobile Endurance Contest
New Development in Aeroplane Construction
Three European Types Embodying Unusual Features
Preparations for Launching the “Akron” for its Trial Trip
Preliminaries for a More Complete Test
A Landsman's Log Aboard the Battleship “North Dakota”—III.
The Battleship "Orion"
The First British Super-Dreadnought
Simple Tests for Food Purity
What the Housewife May Do to Detect Adulterations
A Needle Drill
Screw-Driver Wrench and Tap Wrench
Suggestions for the Workshop- November 11, 1911
Ingenious Expedients of Resourceful Mechanics
Ball-turning Device
The Inventor's Department- November 11, 1911
Simple Patent Law; Patent Office News; Inventions New and Interesting