A Preliminary Account of the Spermatogenesis of Sphenodon. 345 



Jorgensen and myself has amply established that the plasmosome 

 can both in the interpliase and the kinetic stages of nuclear history 

 discharge material into the cytoplasm. Altogether I have figured 

 seven out of a dozen fairly satisfactory metaphase sections, giving 



;. 











if id 



7/f-K 





• 



>^' 



A^ 





Figs. 1-9. 



my own interpretation as to whether chromosomes in individual 

 cases are superimposed or split to make clear the nature of the 

 difficulty. Text-fig. 4 was in every way most satisfactory, and 

 taken with fig. 1 would suggest a complex of 28 units, including 



2 B 



