Feature

Huge Steel Propellers in Quantity Production

Shooting Doesn’t Hurt!

Nature Ramblings: The Early Worm

Jap Soldier Well Fed

Corn from One Planting Available All Season

Spring Meals May Be Low in Vitamin C Content

New Machines and Gadgets

Front Matter

Don’t Waste Penicillin

[Photograph]: Curtiss SB2C-4

Rockets Prove Themselves

Measles Affects Eyes