Perpetual Motion
The One Phenomenon Which Is Universal and Constant
Features
Concrete Purifiers
X-Ray Pictures of Living Plants
A Valuable Method to Assist the Botanist in Studying Vital Processes
An Improved Dry Cell Battery
Golfer's Foot
A 15,000 Horse Power Vertical Turbine
The Elements
What They Are; Their Fundamental Attributes, and the Atomic Theory
Pioneer British Electric Freight Railway
Genesis and Absorption of X-Rays
The Dordogne
The Primitive European's Cradle
The Naval Battle of the Skagerrak
How the Engagement Is Viewed in Germany
Sound Propagating and Zones of Silence
The Iron-Bacteria—II
A Curious Class of Organisms, Their Physiology, and Their Action on Iron Solutions
Timbers of the Philippines
Many Woods of Value for a Great Variety of Purposes
