Feature

Front Matter

Plague Epidemic Is Possible for U.S. under War Stress

[Photograph]: Airway “Light Buoys”

Health Service Sends Experts to Scene of Sleeping Sickness

Pollen Counts Help Hayfever Sufferers

Bad Tempers, Inefficiency, Traced to Lack of Vitamin $text{B}_{1}$

Mobile Laboratory Fights Infantile Paralysis

Pectin May Be Substituted for Blood in Treating Shock

[Photograph]: Fire Gun

Plenty of Vitamin A Is Available for U. S.

Three Mile High Hotel Built on Colorado Peak

Importance of Tin to Defense Stressed in Minerals Yearbook