Vic 
its 
olori.diam - 
Fig. 4. 
Scheme of the mutual overlappings of the dermatomes at 
the d.d. and at the v.d. (The dorso-ventral dimension bas 
not been taken proportionally correct. 
40 8 
=a and the overlapping of a root-field with the third next one (y) is 
vo ; 
25 5 
a? At last the overlapping of a rootfield with the fourth (pq) : 
Do 
10 2 
Bp. stds 
W. and v. R. supposed that the rootzones overlap each other for 
one half, so that zone 1 should stand against zone 3. Consequently 
each skinpoint would be provided for by only two roots. From my 
statements it appears that the overlaps are much stronger, and that 
in some places even as many as four roottields overlap one another. 
The arrangement is thus at the v.d. so, that here strips that are 
provided for by 2 borders of rootzones and by 2 more central 
parts of these, alternate with strips provided tor by the more peri- 
pherie parts of three rootfields. 
If we repeat the calculations given above likewise for the “inner- 
zones” of my strychnine-segment zones, then the overlapping of these 
at the d.d. appears to be not = as W. and v.R. supposed, but ae 
At the ventral median line where W. and v. R. did not find an 
overlap of their central areas, the overlaps of the inner-zones appears 
1 . 
to be about —. From this great difference between the results of 
5 
~~ Tr 
