Vol. 6, 1920 ZOOLOGY: S. R. DETWILER loi 
plasia of the sensory nerve centers. Results so far accumulated suggest 
the possibility that motor regulation is accomplished by division of the 
peripheral axones. It is hoped that further experimentation will disclose 
a number of additional facts concerning the effect of peripheral overloading 
on the development of nerve centers. 
Showing the Effects of Removai, of the Limb and the Functual Activity op 
THE TranspIvAnted Limb upon the Development of Peripheral Afferent 
Neurones 
GANOUON CONNBCTBD 
WITH NOEMAL IN- 
TACT L«PT UMB 
GANGLION WITH 
RIGHT LIMB 
RBMOVBD 
GANGLION CONNBCTBD 
WITH RIGHT LIMB 
TRANSPLANTBD TO A 
HBTBROTOPIC POSITION 
GANGLION NOT 
CONNBCTBD WITH 
BITHBR LIMB 
RATIOS 
No. of Spinal 
ganglion 
No. of cells 
j counted 
Weight of the 
model in 
grams 
No. of spinal 
ganglion 
No. of cells j 
counted 
Weight of the 
model in 
grams 
No. of Spinal 
ganglion 
No. of cells 
counted 
Weight of the 
model in 
grams 
No. of spinal 
ganglion 
No. of cells 
counted 
Weight of the 
model in 
grams 
6 
Z 
a 
i) 
Weight 
3 
1725 
30.4841 
3 
850 
12.9748 
0 
492 
0.425 
4 
1430 
26.1604 
4 
685 
9.7311 
0 479 
0.372 
6 
955 
16.8798 
5 
1195 
22.2939 
1 
25 
1.32 
6 
1171 
26.5422 
6 
693 
12.6600 
1 
.69 
2.09 
7 
1084 
21.7634 
7 
9* 
A** 
720 
754 
773 
11.7366 
15.5456 
17.2328 
1 
1 
51 
02 
1 85 
1.10 
* Left ganglion. ** Right ganglion. 
1 Braus, H., Morph. Jahr., 35, 1906. 
2 Shorey, M. L., /. Exper. ZooL, 17, 1909. 
3 Diirken, B., Zs. wiss. ZooL, 99, 1911. 
* Burr, H. S., /. Exper. ZooL, 20, 1916. 
5 Detwiler, S. R., these Proceedings, 5, 1919. 
* The innervation to the normal and the transplanted limb in Case AS426 is figured 
in the paper referred to above. 
