318 
CHI PING 
TABLE 3 
Giving according to age the computed diameters of the cells and nuclei in the superior 
cervical ganglion of the Norway rat. 
AGE 
COMPUTED DIAMETERS 
Sexes separated. From detailed record 
8 ATIOS OF DIAMETER 
NUCLEUS TO 
Cell iNadleus D IAMETER OF CELL 
days fa ML 
(of 1 vedo 9.85 Leas 
£ 1 16.51 9.60 Li ede72 
fot 5 22.20 12.41 ils a) 
om 5 22.40 12.30 1182 
of 10 21.66 12.50 Wee ie ee: 
2 10 22.21 12.60 1:1.75 
or 15 24.40 13.82 Le eG 
¢ 15 22.82 12.60 peat col 
of 19 26.00 13.86 ae SS, 
Q 19 25.21 13.00 1:1.94 
& 25 22.61 11.25 Ug Aston 
2 25 23.80 12.06 121286 
a 28 26.00 13.40 Lea 94 
of 31 21.21 11.25 11.89 
of 31 21.02 10.55 1 e309 
2 60 27.22 14.20 ih eal bee: 
of 65 25.00 13.04 es 92, 
Q 65 26. 24 13.49 1:31.95 
of 80 23.25 13.40 1 tis 
g 80 23.41 12.80 oz 1382 
of 134 27.00 13.70 De oF 
2 134 24.70 12.85 TES ibatey! 
