MENINGITIS IN MAN CAUSED BY A FILTERABLE VIRUS : I. TWO CASES AND THE METHOD OF OBTAINING A VIRUS FROM THEIR SPINAL FLUIDS.

The clinical pictures presented by two men suffering from an acute bacteria-free lymphocytic meningitis, and the method of obtaining a virus from their spinal fluids were described. Evidence was then adduced to show that the virus was really in the spinal fluids, that the strains of virus obtained from the two patients were identical or closely related, and that the active agent in the spinal fluids was etiologically significant.