InGBERT, Dorsal Roots of Spinal Nerves. 71 
TABLE Id. 
Giving the Percentage Values of the Areas of the Cross-Sections of the 
Dorsal Roots of the Spinal Nerves as Compared with the Per- 
centage Distribution of the Number of Medullated Nerve Fibers 
in Each Dorsal Root. The Greatest Value in each Series is 
taken as 100%. 
Percentage Value. (Ingbert) Male 
a a Nn ce eee 
Number of Number of 
Segments Areas Fibers 
ee eR ee 
I 3.6 2.5 
II 56.4 45-6 
3S ill 53-9 41.8 
a IV 53-9 39-3 
os Vv 56.0 55-1 
Oo VI 92.5 90.9 
VII 100.0 92.3 
VIII 99.7 100.0 
I 35-6 .2 
Il NOn7/ 3 
III 2252 19.1 
IV 22.6 17.6 
= V 16.6 1323 
S VI 14.2 11.5 
‘ig VII 24.5 19 1 
= VIII 17.6 13,7 
ID,< 16.2 nih 
D4 21.1 16.8 
XI 22.6 17.8 
XII 28.0 24.4 
6 I 37:5 34.2 
S II 47.0 43-4 
5 Ill 62.3 49.5 
3 IV 78.8 Hine: 
V 85.7 62.6 
I 94.3 67. 
: um 50.8 375 
g III 34.4 23.0 
n IV 17.0 7.8 
V 4-4 2.5 
12) 
8 I 1.0 6 
