Feature

Liquid Helium Makes Lead Superconducting

Most of Universe’s Radiant Energy in Cosmic Rays

New Mathematical Method Charts Course of Evolution

Front Matter

Methylene Blue May Kill Instead of Saving Life

Alaska Earthquake “Seen” with Telescope

Few Drops of Extract Gives Goiter to 200 Guinea Pigs

Drs. Compton and Millikan Agree on Experiments

Planet Photographed Eclipsing Star

Yardstick Made for Volume of Sound

In Science Fields

New-Born Babies Not Blind like Kittens