1903.] with especial Reference to its Nitrogenous Metabolism. 471 



Tables VI (a) and (b). — Showing increased Nitrogen Assimilation 

 when Glucose is present in the Culture Fluid, and the Eesult of 

 Centrifugalisation Experiments, in the latter instance, both in the 

 case of Younger and Older Cultures. 



Table VI (a).— Culture in Solution " A." Started November 3, 1903. 



~No. of analysis. 



Date of 

 analysis. 



_ 



Control. 



Culture of 

 CJilorella 

 pyrenoidosa, 







Per cent, 

 nitrogen. 



Per cent, 

 nitrogen. 



1 



3.11.1902 



Free ammonia 

 Albuminoid 



ammonia 

 Nitrites and 



nitrates 

 Total nitrogen 

 (by addition) 



-00216 

 -00042 



o-oo 



-00258 





2 



21.11.1902 



and 

 22.11.1902 



Free ammonia 

 Albuminoid 



ammonia 

 Nitrites and 



nitrates 

 Total nitrogen 



-00231 

 -00040 



o-oo 



-00271 



-00202 

 -00039 



o-oo 



-00241 



