ASSIMILATION OF CARBON 



43 



Fig. 23. — Saccharomyces cerevisia I. Film of an old culture. {After E. Hansen.) 



CCD 







% 



P>' 



Fig. 24. — Saccharomyces pastorianus I. Fig. 25. — Saccharomyces pastorianus 



Ascospores. (.After E. Hansen.) III. Young cells of the sediment. {After 



E. Hansen.) 



