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L. Digby 
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Fig. 51. The segmented sides of the split chromatic body may become beaded 
as shown by the body situated in the left portion of the nucleus. 
Fig. 52. A nucleus with three, or possibly four spht chromatic bodies. The posterior 
portion of the second one lies at a higher focus than the anterior portion, and is pro- 
bably independent of it. The split sides of the bodies are beginning to fragnient and to 
round themselves off as beads. Note the increasingly definite character of the linin. 
Fig. 53. The chromatic bodies exhibit degrees of fission and disintegration. 
Fig. 54. Shows the longitudinally divided bodies and the parallel linin threads 
which join the various paired portions to one another. 
Fig. 55. The split sides separate and at the same time fragment. 
Fig. 56. The linin begins to contract away from the nuclear periphery, prepara- 
tory to synapsis. It draws in with it the beaded portions derived from the segmented 
split sides of the chromatic bodies, and these collect round the nucleolus. 
Fig. 57. As synapsis approaches the linin becomes more definitely reticiüate, 
and the substance of the chromatic bodies graduaUy diffuses throughout it. 
Figs. 58, 59 and 60. Show stages in the contraction leading to sjmapsis. The 
portions of chromatic bodies appear as rounded beads lying in the linin matrix. 
Fig. 61. The chromatic beads break up into smaller granules. By this time 
the nuclear contents are closely aggregated round the nucleolus. 
Fig. 62. Complete synapsis showing the massing together of the chromatic beads 
and linin forming a finely granulär synaptic knot. 
Fig. 63. A synaptic knot which as it begins to loosen, is exuding globules of 
faintly staining material from its substance. 
Fig. 64. The loosening of the synaptic knot. Some of the bivalent beaded loops 
may occasionally show a clear space in their substance, this space separates univalent 
lengths of spireme. 
Fig. 65. As the spireme comes out of synapsis it may lose its beaded character 
and become more or less homogeneous. The univalent segments may be widely sep- 
arated for a length and then so closely associated as to form, apparently, a single 
thick bivalent segment. 
Figs. 66 and 67. When the spireme has come out of synapsis it once more assumes 
a more or less reticulate character, the chromatin being concentrated into beads. Where 
the bivalent spireme lengths are more concentrated, a space indicating the Separation 
of the univalent spiremes is often to be seen. 
Fig. 68. The nuclear contents proceed at once to prepare for second contraction. 
The substance of the chromatic beads becomcs agaiu diffused into more or less homo- 
geneous bivalent and univalent lengths of spireme. 
Fig. 69. Shows loops of spireme going into second contraction. The two uni- 
valent sides of the loop, on the right, are separate except at their ends. This point 
of junction is marked by a chromatic swelling. 
Fig. 70. Further concentration for second contraction. The univalent segments 
of the loop in the north part of the nucleus are in dose approximation for a certain 
length, and then become widely separated. 
Fig. 71. In the lower loops the univalent segments are twisted round one another 
and then diverge. 
Fig. 72. Shows various phases in the Separation of univalent lengths of spireme. 
In the Segment in the right side of the nucleus the two univalent threads are united by 
large beads of chromatin. 
