Feature

Block-Busters Blow Disease Germs Apart

Pulsating-Jet Engine to Power Aircraft

Nature Ramblings: Down from the Trees

Spectrograph Gives Fast Quantitative Analysis

Calcium Carbide Removes Sulfur from Molten Iron

New Variety of DDT Kills Mosquito Larvae

Books of the Week

Ninth Magnitude Comet Is Spotted in Cetus

New Machines and Gadgets

D-D Saves Crops from Foes

Waste Products Find Use

Plastic Coating Makes Better Work Gloves