Feature

Waterproof Felt Hats Retain Shape and Size

Safer Landings

Coal Turbine Locomotives to Rival Diesel Engines

Nature Ramblings: Insect Dietary

Relief from Hay Fever by Use of 2,4-D

Books of the Week

Civilian Amputees Need Rehabilitation Programs

Science-Government Cooperation Praised

Atomic Scientists among Guggenheim Winners

New Machines and Gadgets

Front Matter

National Academy Elects