Scientific American Magazine
Volume 147, Issue 1You are currently logged out. Please sign in to download the issue PDF.
Features
When was America Discovered?
Research in the Future
Unique Developments in Science and Industry.
L. W. Chubb
The Mystery of the Unknown Lines
Cables that Reduce Your Telephone Bill
Floating "Suspension Bridge" Protects Dams
What Professor Ritchey is Doing
Why the New Ritchey-Chretien Telescope Now Under Construction Will Be Far in Advance of Existing Types
Albert G. Ingalls
'Rubber' From A Chemical Laboratory
Why Build Up Our Navy Now?
The Big Business of Biscuits
Delivered to the Home Ready for the Oven
The Evolution of the Universe
Ten Greenwich Avenue--For Ladies Only
An Egyptian Temple Yields its Secrets
Concerning the Shark
How the Bureau of Mines Aids the Mineral Industry
Departments
Across the Editor's Desk, July 1932
Back of Frontispiece, July 1932
Unearthing Evidences of the Early Indian
Our Point of View, July 1932
Treatment Prevents Wood Sap Stains, Fabrics Not Weakened by Cleaning Solvents and more
Patents and University Research, Austrian War-Time Inventors to be Paid and more
Books Selected By the Editors, July 1932
