The Recent Army Aeronautical Accident, Why Not Patents for New Plants and Animals? and more

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

A Three-line Drafting Pencil

How to Determine the Thrust of a Propeller

Suggestions for the Workshop

Ingenious Expedients of Resourceful Mechanics

How to Extract a Damaged Screw

Sawing Tubing at an Angle

Co-operative Fire Protection for Small Communities

A Novel Experiment Conducted at Fort Smith, Arkansas

Formic and Lactic Acids, American Road Congress and more