New Types for the Japanese Navy, Dussaud's "Cold Light"
Shall We Build Battle Cruisers?
Every Big-gun Cruiser Would Mean One Less Battleship in the Fighting Line
The Enlargement of the Aswan Dam
By the English Correspondent of the Scientific American
The Altamira Wall Paintings
Some Remarkable Specimens of Primitive Man's Art
Sharpening Edge Tools
Cutting Keyways With a Lathe, Making a Socket Wrench
Chair Making One Hundred Years Age, Lettering Triangle
Notched Lathe Dog, Straightening a Back Saw
Strap Hinges vs. T-Hinges
Automatic Fog Gun
Inventions New and Interesting - February 8, 1913
Recently Patented Inventions - February 8, 1913