55 
in the Root- A pex of Phaseolus. 
Fig. 24. The nucleolar remnants have entirely disappeared ; as they disappear it may be noted 
that a deeper staining and increase in number of the spindle-fibres takes place. An indication of 
this is shown in the Figures. Compare Figs. 21 and 24. 
Fig. 25. Separation of the chromosomes. Anaphase. 
Fig. 26. Later stage of anaphase. 
Fig. 27. Fusion of chromosomes at ends of spindle to form the daughter-nuclei. Formation of 
cell-plate. 
Fig. 28. Daughter-nuclei with chromosomes connected together by linin-network. The new 
cell-wall is beginning to form in the centre of the connecting fibres, which are now more numerous 
at the periphery where the formation of the cell-wall is still in progress, and will continue until it 
reaches the lateral walls of the cell. 
Fig. 29. The chromosomes fuse together into larger masses, still connected by a linin-network. 
The central connecting fibre here entirely disappeared, leaving peripheral fibres only. 
Fig. 30. Later stage of the chromosome-fusion. One daughter-nucleus contains two large 
masses only (nucleoli), the other four nucleolar masses, which are on the point of fusing together to 
form two. The cell-wall now extends nearly across the cell. 
Fig. 31. Shows each daughter-nucleus at a later stage, with only one large nucleolar mass and 
one or more smaller ones. Each larger mass is surrounded by a clear space across which suspending 
fibres are visible as in a resting nucleus. In the nucleus in the upper part of the figure, two of the 
smaller nucleolar masses are in this clearer space, and one of them is on the point of fusing with the 
larger mass. 
Fig. 32. Shows cell-division completed. The two daughter-nuclei contain fusing chromatin- 
masses and a linin-network. 
Fig. 33. Later stage than Fig. 32. The fusion of chromatin-masses is nearly complete. In 
the upper daughter-nucleus there is a single irregular lobed mass. In the lower one a large 
spherical mass and two smaller ones, one of the latter is on the point of fusing with the large mass. 
Fig. 34* Nucleus, showing the last stage in the fusion of chromatin-masses to form the 
nucleolus. The three masses have just begun to fuse together. 
Fig- 35. The fusion is now complete, but the nucleolus has not yet rounded itself off. 
Fig. 36. A still later stage, showing the nucleoli as more or less spherical homogeneous bodies. 
Fig. 37. A still later stage, showing the vacuolization of the nucleoli. The daughter- nuclei are 
now in the resting stage. 
