PHOSPHORUS EXCHANGE IN YEAST 917 



The results of both determinations for the last set of a long series of 

 experiments are given in the accompanying table. As seen from the 

 later very nearly the same figure for the uptake of phosphorus was 

 obtained by the chemical and by the radioactive analysis. We can con- 

 clude from this coincidence that in our experiment no significant 

 exchange of phosphorus atoms took place place between the yeast 

 and the culture solution. 



Reference 



l.G. Hevesy, K. Lunderstb0m-Lang and C. Olsen, Nature 137, 6G 

 (1936); Ibid. 139, 149 (1937). 



