Volume 104, Issue 20
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Features
Vacant Regions in the Milky Way
Herschel's "Windows of Heaven"
Measuring the Deviation of Bore Holes
Curious History of a Great Obelisk
The Competitive Designs for the New Quebec Bridge
A Notable Competition Involving Thirty-eight Separate Plans
Anti-rolling Tanks for Steadying Ships at Sea
How Artificial Waves Are Made to Counteract the Waves of the Sea
Abstracts from Current Periodicals - May 20, 1911
Phases of Science as Other Editors See Them
A Wonderful Dinosaur Mummy
A Relic of the Prehistoric Past
Curiosities of Science and Invention - May 20, 1911
Home-made Anemometer
Drawing Solid Objects with a Reflecting Apparatus
A Seven-cent Battery
The Inventor's Department - May 20, 1911
Simple Patent Law; Patent Office News; Inventions New and Interesting
The Earning Power of Your Money
You Get 3% to 5% on Loans and Bank Deposits. The Borrower and Banker Make 15% to 80% and Up. The Following Article Tells You How To Get What They Get.