Feature

Naked-Eye Meteors Add Ten Tons to Earth Daily

[Photograph]: Photographic Emulsion

In Science Fields

Call for Inventors

Ultrasonics Tear Cell Walls Away from Germs

Front Matter

New Nuclear Particles

Make Anesthetic Device for Dogs and Cats

Scientia International

How Plants Use Sunlight

To Study Earth, Seas and Air at MIT Laboratory

Temperatures Twice Those of Sun’s Surface Reached