160 The Significance of Sex. [ Feb. 
methods there are connecting links. Carnoy calls such a case as 
is seen in Fig. 109 stenotic division, while similar separation with 
more complex spindle and asters, as in Fig. 124, he terms cyto- 
dieresis. 
Finally, the karyosomata reach the poles and pass through 
stages of fusion of the larger bodies and segmentation of the 
smaller, so that the nucleus appears homogeneous because of its 
very fine reticulum. Then from this point the changes continue 
along the upward path to the resting phase, wherever that may 
be. While undergoing this fusion, the hyaloplasm in which the 
chromatin-granules are imbedded become much increased, so 
that if the chromatin is sparse we get vesicular unions, like 
Fig. 125. This hyaloplasm is parachromatin, and it undoubt- 
edly enters partly into the formation of the spindle-fibres; in 
Fig. 126 appears to be the only source of these. 
Concerning the nucleoli that may be present, besides the re- 
ticulum or mitom and the plasmatic nucleolus, there exist the 
most diverse views. In the first place, we must call attention to 
the fact that very diverse structures have received this name by 
different writers. The nodes of the reticulum, the karyosomata, 
the groups these may’form when unresolved by the lens, all 
have received this name. The true nucleolus seems to disappear 
during division, and to be gradually built up by fusion of gran-, 
ules at its close. It has been supposed that it dissolved in the 
nuclear sap, and was absorbed by the mitom, or that it was di- 
rectly connected with the mitom, and so incorporated into it. 
us Pfitzner called its substance prochromatin, as being a store 
iam which the mitom replenished itself, but has lately changed 
the name to pseudochromatin, and other authors think it is of 
accidental value. Those who think with Strasburger, Fraisse, 
Kassel, and Brass that the chromatin is food-substance and the 
hyaloplasm the real idioplasm, find no difficulty with this body. 
But it must be remembered that it also has hyaloplasm, so the 
difficulty i is unsolved. What is the meaning of those polar cor- 
~ puscles (not to be confounded with the polar corpuscles consid- 
he Ee cla seen in Fig. 112, c, o, d, which multiply as the loops 
ly, and whose number is approximately two or three times 
that of the loops ? It almost seems as if they were related to the 
oe kacpeomats,. as the endoplastules of Protozoa are to the endo- 
icy Ne Hes Rome by She segmentation othe nache 
46 
