The Morphology of Functional Activity in the Ganglion Gells etc. 529 
Table VIII. 
The pair of central luotor cells froiu the supra-oesophageal ganglia of 
embryos and new-born. 
Estimated Age. 
Diameters 
of Cell 
Diameters 
of Nucleus 
Volume 
of Cell 
Volume of 
Nucleus 
Nucleus- 
plasma 
Coefficient 
36 X 30 X 30 
17 X 15 X 15 
32 400 
3 825 
7.5 
33 X 33 X 35 
20 X 14 X 15 
38115 
4 200 
8.1 
Just prior to 
birth; removed 
from Shell. 
43 X 24 X 33 
68 X 22 X 33 
19X16X18 
21 X 16 X 18 
34 056 
42108 
5 472 
6 048 
5.2 
6.0 
41 X 33 X 35 
19 X 16 X 15 
47 355 
4 560 
9.4 
46 X 31 X 33 
20 X 14 X 18 
47 058 
5 040 
8.3 
40 X 30 X 34 
18X16X15 
40 800 
4 032 
9.1 
38 X 32 X 43 
20 X 14 X 18 
52 288 
5 040 
9.4 
44 X 31 X 30 
19 X 14 X 14 
40920 
3 724 
10.0 
43 X 37 X 30 
21 X 15 X 14 
47 730 
4 410 
9.8 
36 X 31 X 38 
19 X 15 X 18 
42 408 
5130 
7,3 
Hatched from one 
44 X 32 X 38 
19 X 14 X 19 
53 504 
5 054 
9.6 
to two days. 
48 X 27 X 35 
21 X 17 X 18 
45 360 
6 426 
6.1 
42 X 39 X 33 
21 X 18 X 17 
54 054 
6 426 
7.4 
52 X 25 X 43 
22 X 16 X 18 
55 900 
6 336 
7.8 
51 X 34 X 35 
19 X 17 X 17 
60 690 
5 491 
10.5 
48 X 36 X 38 
20 X 18 X 15 
65 664 
5 400 
11.2 
54 X 34 X 38 
21 X 17 X 17 
69 768 
6 069 
10.5 
54 X 23 X 43 
21X16X17 
53 406 
5 712 
8.4 
69 X 22 X 45 
23 X 15 X 15 
60 700 
5175 
10.7 
59 X 27 X 38 
19X17X14 
60 534 
4 522 
12.4 
48 X 32 X 40 
18 X 18 X 19 
61440 
6156 
9.0 
About one week, 
independent of 
52 X 28 X 45 
58 X 33 X 35 
20 X 18 X 18 
20 X 18 X 17 
65 520 
66 992 
6 480 
6 020 
9.1 
10.1 
mother. 
58 X 33 X 35 
22 X 17 X 15 
66 990 
5 610 
10.8 
61 X 31 X 37 
19 X 18 X 15 
69 967 
5130 
12.6 
43 X 34 X 45 
22 X 19 X 15 
65 790 
6 270 
9.5 
56 X 38 X 35 
21 X 19 X 18 
74 480 
7182 
9.4 
57 X 34 X 40 
22 X 19 X 17 
77 520 
7106 
9.9 
56 X 36 X 40 
22 X 19 X 19 
80640 
7 942 
9.2 
