The Morphology of Functional Activity in the Ganglion Cells etc. 517 
Diimeters 
of Cell 
Dianieters 
of Nucleus 
Volume 
of CeU 
Volume 
of 
Nucleus 
Nucleus- 
plasma 
Coefficient 
Average 
Volume 
of Cells 
Average 
Volume 
of Nuclei 
Nucleus- 
plasma 
Coefficient 
112 X 78 X 105 
37 X 22 X 34 
917 280 
27 676 
32.1 
107 X 92 X 95 
34 X 26 X 32 
935 180 
31488 
28.6 
932 943 
28 334 
31.9 
106X96X 93 
33 X 27 X 29 
946 368 
25 839 
35.6 
111 X 89 X 103 
32 X 29 X 25 
1 017 532 
23 200 
42.8 
1026391 
22 731 
44.2 
101 X 82 X 125 
33 X 24 X 29 
1035 250 
22 262 
45.5 
1J117X 89X115 
23 X 15 X 30 
1 197 495 
10 380 
114.4 
1 197 495 
10 380 
114.4 
For the sake of the simplicity to be obtained by considering all the 
tables and curves together, a comparison will first be made between 
average normal animals and those stimulated in Order to emphasize the 
fact that they differ only in degree and extent of their respective changes. 
According to the last paragraph, the sizes sufficiently represent the 
changes and degree of activity, The animals of Experiment 9 (Table IV, 
Text Fig. 2) and of Experiment 23 (Table V, Text Fig. 3) were of the same 
size. The same size is more convenient, but it is to be remembered that 
the comparison can be irrespective of that, considering the relative in- 
crease above the respective resting cell in any case. Comparing these 
tables, the smallest cell of Experiment 23 is nearly one third larger than 
that of Experiment 9, and though the largest cell is but slightly larger 
than that of Experiment 9, there are six cells approximating it in size, 
though the largest of Experiment 9 is alone. As only abdominal ganglia 
are considered in Experiment 23, it is to be stated that aU the cells from 
Experiment 9 just compared are also abdominal ganghon cells. There 
are three cells of the next largest group from Experiment 9, five from 
Experiment 23 (all abdominal ganghon ceUs). At the other end, in Ex- 
periment 9, there are twenty-two cells out of one hundred and fifteen in 
the first three groups of resting and early active cells ; in Experiment 23, 
there are eight out of eighty-two, and the earliest group has disappeared. 
This last Statement is corroborated by the way a striking change in the 
nucleus-plasma relation occurs in both at exactly the same point of size 
(Group 4, Table TV and Group 3, Table V). In short, the condition is 
exactly that which would occur if every ceU were shoved along, some 
a little more, some a httle less, in a definite course — each is comparati- 
vely more advanced than in the normal. Again, as examples from the 
1) This cell is represented in Figure 7. Ciirve in Text Figure 3 was drawn 
before it was added. 
Archiv f. Zellforschnng. IX. 
35 
