168 APPENDIX. 
3. Aspergillus repens and Penicillium crus- 
taceum. 
These moulds may be examined exactly as 
directed for Mucor. 
4. Key for the Identification of the Yeasts 
and Moulds that most frequently contaminate 
Cultures. 
Mycelium growth absent: 
I. YEASTS, SACCHAROMYCETACE. 
1. Growth white to dirty white, 
S. cerevista. 
: S. albicans. 
2. Growth reddish, 
S. glutints. 
3. Growth brownish to black, 
S. niger. 
Mycelium growth present: 
II. MOULDS. 
1. Spores inside of sporangia. 
PHYCOMYCETES. Family, MucorInl1. 
(2) Mycelium of one kind, 
1. Spore-bearing bodies on unbranched 
hyphe, 
Mucor. 
2. Spore-bearing bodies on branched hyphe, 
Circinelia. 
(2) Mycelium of two kinds, 
Rhizopus. 
‘Adapted from ‘‘Some Laboratory Moulds,” by S. E. 
Jelliffe, in Journal of Pharmacology, Nov., 1897. 
