﻿ILLUSTRATIONS 



Plate I 



Pig. 1. Zoogloeal masses of bacteria forming a continuous sheath surround- 

 ing the hair. Case 0. S. Zeiss Ocular 4 Obj. AA. 



2. The end of the hair where it was clipped off in vivo. Bacteria 



growing within the split hair. Case O. S. Zeiss Ocular 4 Obj. 

 DD. 



3. Cross section through the diseased hair. Bacteria penetrating 



within the hair. Case 0. S. "Homm. immer." V^o Ocular 2. 



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