GROWTH OF THE CEREBRAL CORTEX 193 
TABLE 4—Continwed 
Zag 
oO | BODY WEIGHT BRAIN WEIGHT 
ies ‘ 
4&6, 
pO Ste nd- 
: ct ee x TEST AVER-| Pos : [esis ae 
Sao enGne Ane CON- SEX AGE | o% & Stand- | Stand- he dae 
‘ TROL AGE ARS Ob- |ardac-} Ob- | ard ac- rs abe 
8 = | served|cording | served |cording served 
B aS to age to age body 
5 weight 
days |\per cent| grams | grams | grams | grams | grams 
Average | = 
cee Cal SS 10.0 | 10.4 | 0.718! 0.716] 0.670 
(Series 1)  f 
(per. diff.) (— 4) (+ 0)|(+ 7) 
Average 
ee 6 \ (Oy I 19+ PU | OMS |) WAZA Tl aleoid| df kes 
(Series I) J 
(per. diff.) (+27) (+ 9)}(4+ 1) 
pole; the measurement L.F’, the sagittal diameter from the frontal 
to the occipital pole running parallel to the sagittal fissure, and 
the measurement Ht. is the greatest vertical height at. the stalk 
of the hypophysis. In table 5, which was condensed from 
table 5a (unpublished) for each individual, the average brain 
weight, the average measurements W.B, L.G and Ht. are given for 
each group, both test and control, compared with the corresponding 
standard measurements for the brains of the same weight, which 
were originally calculated for each individual using the formulas 
formerly presented by me (Sugita, 717), and then condensed. 
The measurements L.f and W.D are given, also condensed for 
each group, in table 9. 
On examining table 5, it appears that the measurement W.B 
of the underfed is smaller on the average by 2 per cent (average 
of all eight litters, T. groups only) than standard for the brains 
of the same weight, while the measurement L.G of the underfed 
is greater on the average by 2 per cent (average of all eight litters, 
T. groups only). The height in the underfed seems to be slightly 
less, by about 1 per cent on the average. On the other hand, if 
the controls be considered in the same way, they show also slight 
deviations from the calculated standard values, thus, on the 
average (Litters A to E, C. groups only), W.£ is smaller by 1 per 
cent, L.G greater by 0.8 per cent and Ht. smaller by about 3 per 
THE JOURNAL OF COMPARATIVE NEUROLOGY, VOL. 29, NO. 3 
