OXNEliELLA MAIUTIMA. 
529 
-Telophases. At the end of tlie anaphase stages each set 
of chromosomes breaks up into a ball of deeply-staining 
granules, with which probably a part of the substance of the 
spindle becomes incorporated to form the daughter-nuclei 
(PJ. 27, fig. 19). Between these two nuclei the spindle-fibres 
rapidly disappear (PI. 27, figs. 19, 20). As reconstruction of 
the nuclei proceeds, a part of the chromatin becomes aggre- 
gated at the centre of each, forming the new karyosomes 
(PI. 27, figs. 19, 20). The daughter-nuclei then soon assume 
the structure characteristic of the ordinary resting nuclei. 
Ihe stages in this process will be evident from the figures 
without further description (PI. 27, figs. 20—22), since they do 
not differ from the telophases of many other nuclear divisions 
for instance, those in Amoeba gleba 3 , which I have else- 
where described (Dobell, 1914). 
Constriction of the protoplasmic body of the organism into 
two begins during the anaphases (cf . PL 27, figs. 17, 18), and 
is completed during the telophases (PI. 27, figs. 20-22). As 
the two little daughter-individuals separate they gradually 
form their pseudopodia, the axes of which can be seen to 
spring from the new centroplasts (PI. 27, fig. 22). Each 
animal very soon acquires the typical form of the adult, with 
central centroplast, excentric nucleus in close relation to it, 
and so on. Each daughter-organism also inherits ” about 
an equal share of the food-masses of its parent. 
It is perhaps worthy of note that the final constriction of 
the body into two is preceded by a stage in which there is a 
narrow strand of protoplasm connecting the two organisms. 
(See PL 27, fig. 21. In later stages, before complete separa- 
tion, the strand becomes much finer before it snaps.) This 
detail in division distinguishes some of the free-living amoebae 
— e.g. A. glebae and related forms — from others, in which 
the constriction is effected more sharply, without the per- 
sistence of a connecting strand (e.g. “A. limax” and 
related forms). 
I have not been able to watch the whole process of division, 
from beginning to end, in the same living organism. I have 
