Operation on a Mosquito

A new. convenient way of infecting syphilitics with malaria begins with an operation on a mosquito, reported Dr. Bruce Mayne. U. S. Public Health entomologist in Washington last week. (Malarial fever raises the syphilis victim's temperature and remits, sometimes cures, the paresis caused by advanced syphilis of the brain --TIME, Feb. 20.) Heretofore it has been necessary to induce malarial mosquitoes to bite paretics. Live mosquitoes are difficult to handle, often die in transit, sometimes escape with consequent danger to the community. Dr. Mayne. who learned all about mosquitoes in England. India. the Philippines and the U. S., found that by chloroforming them under a 20-power magnifying glass he could cut out their salivary glands in which lie the malarial organisms. Made into a serum, the malaria germs from one mosquito suffice to inoculate twelve paretics.

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