1gIt] BROWN—LACHNEA SCUTELLATA 293 
Occasionally this may occur at both the first and second divisions 
(fig. 43). 3 
When the two groups of chromosomes have reached the place 
where the daughter nuclei are to be reorganized, they lie at the ends 
of the fibers which connect the centrosomes and just below those 
which radiate out into the cytoplasm. A clear area then makes 
its appearance on the side of the chromosomes which is away 
from the radiating fibers (fig. 42), and a membrane is formed 
around this clear area 
(fig. 44). The centrosome 
appears to be on the 
nuclear membrane and 
can be distinguished 
until the nucleus grows 
considerably, but after 
a time it seems to dis- 
appear. When the nu- 
cleus is first formed, the 
chromosomes are still 
arranged in a group on 
that side of the nucleus 
which is near the radi- 
ating fibers. As growth 
Proceeds this group 
gradually grows smaller, Fics, 45-48.—Fig. 45, daughter nuclei reorgan- 
while masses of chroma- ized; fig. 46, resting nucleus between first and 
tin make their appear- second divisions; fig. 47, metaphase of second 
ance on other parts of division; fig. 48, anaphase of second division; all 
the nuclear membrane. *7°°° 
The nuclei are usually pear shaped (fig. 45). This appearance sug- 
gests that the radiating fibers exert a pull on the nucleus. 
The next division is homotypic, and shows no new features. 
The chromatin becomes arranged in a spireme (fig. Wo) WHI BVES 
tise to five chromosomes. These chromosomes are usually rather 
close together, and frequently they become aggregated in a rather 
dense mass. This phenomenon appears to be similar to the 
grouping of the chromosomes in the prophases of the divisions in 
