Feature

Accidents Have Played Part in Discoveries

Fats Give More Energy, Greater “Staying” Quality

Indian Arrow Points Are Interesting to Hunt

Restore Old Paintings: With Science and Taste

Cities’ Health Honor Roll Shows Low Diphtheria Rates

Northern Lights Not Noisy, Veteran Physicist Declares

Front Matter

New Refugee Problems Find Old Ones Still Unsolved

[Photograph]: New Picture of Old Monster

Science Urged to Aid World Settle Problems Peacefully

Nation Not Half Mapped; Surveys Called Economy

Knowledge of Failure a Privilege; Lunatics Never Worried by It