454 KING. [ Mowe ule 
organ never grows beyond a certain size in adult males. 
During the summer months the cells of this body increase 
rapidly in number and also in size and they often become 
so crowded together that one cell forms a decided indentation 
in the surface of an adjacent cell. In preparing to divide the 
nuclei of such cells frequently become greatly elongated, much 
more so than shown in Fig. 17, and before the appearance 
of the division membrane it might readily seem as if the sub- 
stance of the nucleus was flowing in a certain direction and 
that the one egg was trying to force its way into another. 
Very often, during the division of these cells, currents seem 
to be set up in the cytoplasm and a portion of the cytoplasm 
around one nucleus may appear sharply distinct from the re- 
maining cytoplasm. On superficial examination such ova may 
give the impression that one cell has entered another since the 
egg contains two separate nuclei; one of them being surround- 
ed by cytoplasm which appears differently from the other cyto- 
plasm in the cell. The cell which has apparently engulfed one 
of its neighbors is never noticeably larger than the surround- 
ing cells; and both of its nuclei are similar to the nuclei in 
the adjacent cells, while its zona pellucida appears perfectly 
intact in all places. These facts seem to me sufficient proof 
that the egg in question is dividing amitotically and that it 
has not been entered by another cell. I do not see how it 
would be possible for one egg to enter bodily into another egg 
of practically the same size without causing a break in its 
zona pellucida or without producing a marked increase in the 
size of the cell and a profound change in its structure. 
Friedman (11) has observed that the cytoplasm of the de- 
generating eggs that are sometimes found in the testis of 
Rana viridis is often separated into two distinct portions which 
have no regular outline but dovetail into each other in vari- 
ous ways. One part of the cytoplasm has a granular structure 
and stains very intensely, while the other part is apparently 
homogeneous and stains very faintly. This appearance of the 
cytoplasm is probably due to an abortive attempt on the part 
of the cell to form yolk-nuclei similar to those shown in Fig. 
