Bacteriologic Diagnosis 765 



and other fungi give the same degree of fixation, the method lacks 

 precision. 



Bloch has also employed an intra-dermic injection of a sterilized 

 emulsion of the sporotrichum for purposes of diagnosis. In 

 twenty-four hours, patients with sporotrichosis give a marked re- 

 action in the form of an indurated nodule with a broad reddish 

 surrounding areola. 



