278 Dixon . — Function of Nucleolus in Heredity. 
In this manner, when the ascospores are approaching 
maturity, each is possessed of a number of nuclei derived from 
the nucleoli of its original nucleus. In the process there is 
probably at first a transference of chromatin into nucleoli, and 
afterwards a bodily transformation of these latter into nuclei. 
The first action is parallel to that described by Farmer and 
Williams in the fertilization of Fucus 1 ; the latter is the 
converse of this, and is similar to that discovered by Wager 
in the spore-formation of Yeast. 
In all these cases, if we admit the hereditary function of 
the chromatin, it is scarcely possible to deny it to the 
nucleoli. 
1 L. c., p. 632. 
