Volume 106, Issue 25
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Features
The German Battle-Cruiser “Moltke”
A Fine Example of a New Type of Fighting Ship
A Scientific Test of the Electric Truck
An Impartial Study of the Comparative Cost of Horse-drawn and Power Vehicles
How the Germans Utilize Waste—VI
Wealth That Has Been Earned by the Efficient Use of Raw Material
What is the Montessori Method?
Application of Science to Education
Animal Masquerades
A Demonstration by Abbott H. Thayer of Color Marking and its Effect
Sawing Tubing at an Angle
How to Determine the Thrust of a Propeller
A Three-line Drafting Pencil
How to Extract a Damaged Screw
Suggestions for the Workshop
Ingenious Expedients of Resourceful Mechanics
Co-operative Fire Protection for Small Communities
A Novel Experiment Conducted at Fort Smith, Arkansas