DIVISION OF THE CENTRAL CELL. | 45 
concerned, has entirely disappeared, and inside of the blepharoplast 
now a clear hyaline plasm is visible, forming a delicate reticulum with 
large meshes somewhat similar to the plasm found in the colorless 
parts of the nucleus in the synapsis stage of division. What has become 
of the dense stainable matter which previously occupied the center of 
the blepharoplast‘ It will be remembered that this matter appeared 
largely like nucleolar matter, remaining homogeneous but vacuolate, 
and staining deep red with safranin. Its contraction away from the 
outer membrane of the blepharoplast during division and its gradual 
disappearance as above described indicates that it may have been util- 
ized as reserve food material to provide for the active growth which 
has been taking place in the blepharoplast itself and in other parts of the 
cell. The growth of the outer membrane of the blepharoplast in thick- 
ness and the appearance of granules in the structure of the membrane 
is evidently correlated in some way with the disappearance of its con- 
tents. When the daughter nuclei organize in an early telophase, they 
are at first strikingly small in comparison with the organizing daughter 
cells and the nucleus of the mother cell. Figure 35 shows a drawing 
of a fairly early telophase, and a photomicrograph of the same cell is 
shown in figure 63. The nuclei of the daughter cells in this case have 
reached the daughter spirem stage, the chromatin spiral being plainly 
visible in one of the nuclei. The nuclei are elliptical in shape, being 
from 20 to 22 “ long and from 12 to 13 4 wide. The daughter nuclei 
are located in a portion of the cytoplasm, having a different reticular 
structure, which evidently corresponds to the specialized polar areas of 
cytoplasm described in the preceding stage. The spindle tibers have 
bulged out on each side of the old mother-cell nucleus, reaching the 
cell wall on each side. They have contracted away from the daughter 
nuclei, and seem at their outer ends to be in the process of gradual 
transformation into the normal reticulum of the cytoplasm. No visi- 
ble thickening occurs on the fibers where the new plasma membrane 
is to be formed, but a space free of granules and stainable matter 
clearly shows where the new plasma membrane detimiting the two cells 
will form. ‘This is particularly well shown in a photomicrograph of 
the cell shown in figure 63. 
The blepharoplast, which in the preceding stage was separating 
into plates or fragments and showed itself in cross section to be made 
up of numerous small granules so placed together as to form a mem- 
brane, is in this stage represented by a group of numerous round or 
oblong granules clustered together in a somewhat irregular, more or 
less spherical mass, which stains the same as the outer membrane of 
the blepharoplast. It would seem that the outer membrane of the 
blepharoplast breaks up into numerous segments or granules, which 
assume a roundish or elliptical form and through the action of the 
cytoplasm become crowded together in a mass occupying the position 
