Kachoo! Now Its a Mechanical Sneezer (Apr, 1940)

Kachoo! Now Its a Mechanical Sneezer
Infectious germs are spouted from the mouth of a mechanical sneezer developed for medical research by William F. Wells of the University of Pennsylvania medical school in Philadelphia. By means of compressed air, the apparatus blows air-borne germs through a tube into a glass bell housing an experimental rabbit, to simulate the common method of transmission of germs by human sneezers and coughers.

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