No. 524] 



NOTES AND LITERATURE 



511 



For many years the writer lias held the view that in so far as 

 the chromosomes have a relation to hereditary characters the 

 influence they exert results from the relation they hold to the 

 nutritive processes, lie is therefore prepared to accept Guyer's 



Guyer intimates that changes first initiated in the chromatin 



there conserved. While it would seem to be possible that eh a litres 

 in the chemical constitution of a chromatin body might effect 

 chancres in other chromatin bodies and in the cytoplasm, I see no 

 reason why such an assumption is necessary to account for 

 permanent and fundamental evolutionary changes. I think we 

 may look upon the cytoplasm and each of the chromosomes as 

 having more or less of an individual existence and that each of 



