Feature

Science Makes Notable Strides during 1931

Tree Ring Studies Steadily Decrease Undated History

In Science Fields

Cold Storage Does Not Harm Vitamin C of Apples

Front Matter

Typhus Fever in Man Proved to Be Transmitted by Fleas

Loot from Half of Country Brought to One State

Warning against New Baldness “Cures” Issued

Depression Does Not Justify Research Work Moratorium

Cheesecloth Saving Rare Plant on Rim of Hawaiian Volcano

The Beagle Starts Her Voyage: “A Classic of Science”

Drawing Shows Man Rode Horse 5000 Years Ago