1899] 



MICROSCOPICAL JOURNAL. 



355 



the main filament being large, while the branches taper, 

 sometimes these being extremely fine. In old cultures the 

 filaments become very large, thick and rough-walled. 

 They are always colorless. 



Fig-. 6. Same as figure 5 but X 495. 



The conidiophores, figs. 7, 8, 9 can be distinguished from 

 the mycelial hyphse as they gradually enlarge to the sphe- 

 rical end. The length varies to such an extent that any 

 figures would not mean anything. The conidiophores are 



sometimes short branches at right angles to the filaments 

 from which they arise sometimes so long that their con- 

 nection is somewhat difficult to determine. Busgen gives 



