Features
Maguay Fiber
A Plant with Industrial Possibilities
Anthropological Curiosities
The Pygmies of the World
A Torpedo Guided by Electric Waves
A Naval Possibility
Electrical Exports
The Properties of Electrons
The Interpole Motor
Wireless Telegraph Apparatus for the Lecture Room
How it should be Constructed
Unsolved Problems in the Design and Propulsion of Ships
Loading, Watertight Compartments, and Stability
Balloons and Lightning
Danger for the Aeronaut up in the Storm Clouds
Lieut. Shackleton's Expedition to the Antarctic and its Equipment
The Modern Method of Collecting Turpentine
The Seed, a Chapter in Evolution.—II
A Resume of Recent Knowledge
Imports of United States, by Principal Sources, 1907
Audibility of the Aurora
Estimating Heights and Distances
Some Rough and Ready Methods
Clocks—Ancient and Modern
An Historical Review of Horology
