Feature

Nose and Throat Specialists Told How to Use Polio Spray

Pneumonia May Be Caused by Sucking Oil into Lungs

Front Matter

Radioactive Sodium Isotope Giving off Positrons Found

First Glances at New Books

Scientists to Honor “Father of Modern Industrial Chemistry”

Scientific Expedition from China Helped Found Japan

[Photograph]: For Steam “Windmill”

Stellar Preview

Infantile Paralysis Cases Continue to Mount

Nature Ramblings: Widows’ Sons

British Expert Predicts Speed and Altitude Limits