Volume 148, Issue 6
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Features
From the Archeologist's Note Book, June 1933
Why the St. Lawrence Waterway?
Flies Raised to Test Death Sprays
The Literary Value of Mathematical Tables
Amateur Astronomers' Home-Made Observatories
Fly Fast--Land Slow
High Speed and Safety Are Essential to Aerial Transportation: How Both Ends Are Being Gained
A 'Different' Art Museum
A Mechanical Cow
That Breathes, "Gives Milk" and Moves Her Head, Eyes, Ears, and Jaws in Lifelike Fashion
The Second Scientific American Test of Telepathy
Paper and Pencils Are All That Is Required for Conducting This Series of Experiments That May Open a Large Field for Study