Feature

Polar Regions May Warm in Recovery from Last Ice Age

Blood Gives No Clue to Tooth Decay in Pregnancy

First Glances at New Books

Metals in Teeth May Generate Electricity

Mt. Washington Colder than the Antarctic

First Glances at New Books

Front Matter

Cancer Follows Injection of Germ from Proved Case

Internal Fires Make Mountain Move

New Bureau of Standards Head Chosen from Ranks

Chimpanzees Use Earphones in Tests of Hearing

New Sleeping Potion Test May Aid in Poison Cases