40 
dn atas. | spirema | itn Monas: | en ere ae 
1014 a.m. 3882 — -~ — = Aen cad 
2 p.m. 6106 13 1 ea et = 
61/ p.m. 4530 24 10 7 3 6 | — 
10pm. | 9972 13 25 25 13 Sla | 15 
yam. | 7590 | 20 18 16 Bd ln ae 
7 am. | 9255 8 11 13 2 7 8 
If we express in percentages the total number of dividing nuclei 
and the various stages and if we calculate the probable error by 
the well-known formula for it 
Petey Ota! “lo Po oP ) 
Elie n 
we obtain the following numbers. 
‘Chrom. at) 2 Young 
Time of | Loose : 
fixation | wares | Spirema chromos. | Monaster | Diaster poles nuclei 
division | | 
101% a.m. 0.00 0.00 0.00 0.00 0.00 0.00 0.00 
2Us p.m. 0.23+0.060.21+0.060.02+0.01 0.00 0.00 0.00 0.00 
6l p.m. 1.10+0.150.53+0.100.22+0.070.15+0.060.07+0.04 0.13+0.05 0.00 
10% p.m. 1.08+0.100.13+0.04 0.25+0.05 0.25+0.050.13+0.040.31+0.05 0.00 
24% a.m. 1.21+0.120.26+0.06 0.24+0.06 0.21+0.06 0.12+0.040.18+0.05 0.20 +0.05 
7 am, 0.53+0.070.09+0.030.12+0.030.14+0.040.02+0.010.08+0.030.09+0.03 
The tables clearly show that there is a time of maximum and 
one of minimum nuclear division, the intermediate times forming 
a gradual transition. 
At 10°/, a.m. not a single division was observed; at 2'/, p.m. in 
6106 nuclei 14 karyokineses, i.e. from 0,17 to 0,29°/,. At 6'/, p.m. 
the number has considerably increased, amounting to 50 in 4530, 
Le. from 0,95 to 1,25°/,. 
At 10'/, p.m. the number of karyokineses is 107 in 9972, i.e 
from 0,98 to 1,18°/,, pretty much the same number as at 6'/, p.m. 
At 2'/, am. the karyokineses number 92 in 7590, i.e. from 1,09 
1) See JOHANNSEN, “Elemente der exakten Erblichkeitslehre’’. first edit, p. 82, 
2 and 57. 
