636 
Wm. S. Maisliall 
oöcyte, and, loosiDg their identity , become similar to its other Con- 
tents. Wliile difficult to determine if there occurs hcre a process of 
secretion by Strangulation, or some very similar process, we are in- 
clined to tbe view that such is the case and that there is a pouring 
out of part of the contents of botli cell and nucleus, especially the 
latter, such part being used by tbe oöcyte in its growth. The first 
stage in such a process is probably the peculiar arrangement of a 
part of the nuclear contents (Fig. 16). That the rods and strings of 
the chromatin granules liave nothing to do with chromosome forma- 
tion is easily seen by a comparison of the one with the other and 
also that the peculiar arrangement of the chromatin granules is found 
in old chambers after mitosis bas ceased. The chromosomes are 
large, evenly distributed throughout the nucleus and, at first, show 
no regulär arrangement. 
In the older chambers, where secretion as just described is found, 
the cells showing it occur side by side with resting cells; scattered 
among these may also be found ruany in process of division. In 
figure 16 the upper cell sliows the beginning of the peculiar arran- 
gement of the chromatin granules and represents an earlier stage than 
tliose already figured (Figs. 15 and 14). The middle cell in the 
figure is a dividing one and the lower one a normal resting cell. 
In the dividing cell here shown the division of the nucleus is com- 
pleted and a peculiar structure that was seen in several cells after 
completion of nuclear division is noticed. 1t consists of two rod-like 
bodies between the daughter nuclei; eaeli appears, in darklv stained 
specimens, as a rod, but, when the stain has been well washed out, 
eaeli rod is seen to cousist of a short linear series of darkly staining 
granules. 
Again in many chambers activity of the follicle cells is shown 
by the greater susceptibility to stains possessed by some cells Fig. 19). 
This is noticeable in the older chambers and it is found that the 
darker cells liave no regulär arrangement in relation to the others. 
A surface view of such a chamber sliows the darker cells single, in 
small isolated groups or, generally, formiDg together an irregulär 
network (Fig. 18). In section these more darkly staining cells show 
a number of vaeuoles in the cytoplasm at their free euds. The diffe- 
rence between these cells was mueli greater than is shown in the 
drawing (Fig. 19) and many of the darkest cells liad become so colored 
that it was barely possible to distiuguish the contents, wliile normal 
cells next to these were very clear. It was also noticeable that in 
