The Aeroplane in Arctic Exploration

Record Gunnery by the "Pennsylvania," The Physiology of Labor, and more

Gunnery trials by the USS "Pennsylvania" at the ranges suggested as more likely to be encountered, following recent naval engagements.

Further Light on the Quebec Bridge Disaster

A Minute Examination of the Structure Discloses Internal Evidence of the Cause of the Collapse

Strategic Moves of the War, September 22nd, 1916

Our Military Expert

Armor-Plating an Aeroplane, Maple Wood, a Substitute for French Briar

Recent Cruise of Patrol Squadron No. I

Work of Part of the Mosquito Fleet

Walking, Hopping, Creeping and Crawling Mechanical Beasts

Various Traction Mechanisms that might be Employed for Armored Battle cars and more

Lipo-Vaccines

Validation of Patents and Trademarks in Mexico