Feature

Knowledge of Chromosomes Founded Synthetic Species

300,000 Galaxies Studied by Harvard

Douglas Fir Felled in 1895 Older than Sequoias

Temper Tantrums

In Science Fields

New Hormones Show Whether Boy or Girl Will Be Born

Forty Thousand Protected against Spotted Fever

Field Museum Gets Horned Gopher Skull

Chemical Surface Phenomena: “A Classic of Science”

Earth Apparently Missed Main Leonid Meteor Swarm

Front Matter

Nobel Prize in Chemistry Is Awarded Dr. Langmuir