Opalina. 265 
nection by means of their united branches (Text Fig. VI, B). When 
the division of the nucleus is completed, one would find in each 
daughter nucleus eight daughter units each consisting of a single 
mass of chromatin with many branches which unite with branches 
Text Fig. VI. 
Diagrams of mitosis in 0. intestinalis, only 
two chromatin units, instead of eight, being 
shown: A = an anterior nucleus in the irre- 
gular “equatorial plate” stage, four daughter 
chromosumes being present; B = an early 
anaphase ; = a later anaphase; D = an 
early telophase, the chromosomes being con- 
‘nected by their broad lateral outgrowths. 
E 
Text Fig. VII. 
Diagrams of mitosis in O. intestinalis, only 
two chromatin units being shown. EH =a late 
telophase (spireme). The chromosomes are unit- 
ed into a ribbon which, if all the chromosomes 
were shown, would extend over nearly the 
whole nucleus. The undivided nucleolus is 
shown in the posterior daughter nucleus. 
# = an anterior daughter nucleus in an early 
prophase; the chromatin ribbon is breaking up 
again into chromosomes; the new nucleolus 
is forming near the more pointed end of the 
nucleus. G = an anterior nucleus in a late pro- 
phase; chromatin spherules have been formed, 
