Feature

New Machines and Gadgets

Mercury Chlorine Cell to Be Studied in Germany

Could Attack Food Crops

Radio Carbon as Tracer

Spider Bite Cure May Come from Drug

America’s Fastest Plane

Cable Controls Operation on Bulldozer Tractors

A.M.A. Health Plan Called Inadequate

Expensive Perfume Is Not Preferred to Cheap Kind

War Houses Converted

[Photograph]: Medicine Advances

Steps toward Synthesis of Penicillin Announced