Saving $2,000,000 Water Waste a Year
The Remarkable Result Accomplished by a Simple Invention
A Group of Neglected Optical Phenomena
Perils of the Deck-load
Real and "Faked"
The Brahmaputra Expedition, Night Storm Signals in Germany
Improving on Darwin
Johannsen's Theories of Evolution
Curiosities of Science and Invention - April 6, 1912
What Inventors are Doing - April 6, 1912
Simple Patent Law; Patent Office News; Inventions New and Interesting
II.-Shall My Boy Become an Engineer?
Growing Easter Lilies to Order
Correspondence - April 6, 1912
Recently Patented Inventions - April 6, 1912