Although the Bacillus diphtheriæ has been found in the most diverse lesions, its presence in the central nervous system is almost unheard of. Thus far we have been able to find only one case in the literature, that of Wilson and Head, in which the organism was positively identified. The circumstances which led to the discovery of the organism in this case, however, as well as in the one about to be reported, would speak for greater frequency, though usually unrecognized.
—W. M. C., colored, male, four and one-half months old, was admitted to the children's ward of Cook County Hospital, service of Dr. F. X. Walls, to whom we are indebted for permission to report the case. According to the mother's statement the child had been taken ill ten days before admission to the hospital with high fever, pain in the chest and a cough. Eight days