Feature

First Commercial Production of Spotted Fever Vaccine

Why You Should Buy U. S. War Bonds and Stamps

Nature Ramblings: Symbol of Union

New Machines and Gadgets

Long-Range Bomber May Bring Population Increase

Plastics for Airplanes Get New “Mar” Test

Better Inventions Aid U. S.; Hush-Hush Part of Planning

[Photograph]: Substitutes

Regression of Breast Cancer Follows Sex Gland Operation

Penicillin Stops Germ Growth at Dilution of 1:12,000,000

[Photograph]: Honored

Science Clubs of America