Bui. 1 19, Bureau of Chemistry, U. S. Dept. of Agriculture. 



PLATE I. 



F.G. 1. CONIDIA, NORMAL SIZE AND IN VARIOUS STAGES OF GERMI- 

 NATION, SOME WITH BRANCHING HYPH/C (X 325). 



' 



FlG. 2. CONIDIOPHORE, SHOWING UNUSUALLY LARGE DEVELOPMENT 



OF CONIDIA, FROM CULTURE IN MOIST CHAMBER (X 325). 



PENICILLIUM. 



