During the eighteen years that Dr. Charles Armstrong, 48, has been in the U. S. Public Health Service he has repeatedly risked his life investigating botulism, influenza, syphilis, spasms following vaccination, milk-borne epidemics,
"breakbone" fever,* parrot fever. During one study he contracted breakbone fever, during another parrot fever. The parrot fever attack made him particularly useful to the wife of Senator William Edgar Borah when she contracted that disease. Serum from Dr. Armstrong's immune blood cured her. Dr. Armstrong's current assignment is last year's epidemic of sleeping sickness in St. Louis (TIME, Oct....