Feature

Parachutists’ Hatch Devised for Plane’s Tail

Veteran Army Airplanes Used in High Schools

Influenza Cases Increase

Caused by Type A Virus?

New Model Jap Rifle Found Inferior to Garand

Speed Breeding for Fur

Home-Made Soups Help Fill out War Time Diets

Nature Ramblings: American Christmas Plant

Books off the Press

Front Matter

Psychogenic Rheumatism

[Photograph]: Straight Lines to Curves