Studies in Pleomorphism in Typhus and other Diseases. 5S3 



if the occurrence of this phenomenon, and of genuine sprouting, 

 were confirmed by a series of photographs of living individual 

 organisms. 



He also pointed out that to attempt to explain aberrant types 

 of bacterial morphology by calling them involution forms was 

 merely a confession of ignorance. Personally, he had in the case 

 of young freely growing cultures, such as these were, no idea of 

 what was meant by an involution form, though the term might 

 perhaps be legitimately employed to describe the bizarre deformities 

 seen in dying or dead individuals in old and unsuitable media. 



