AUTOTROPHIC ASSIMILATION 83 



does not appear to be deaminated during assimilation, its 

 amino-group evidently being utilized by transamination® 

 as in reaction 22. In media containing amides, ammonia 

 may be liberated in small quantities during the growth of 

 Chlorophyceae, evidently as a result of deamidation taking 

 place independently of deamination and transamination.' 



