206 
NAOKI SUGITA 
TABLE 9 
Giving for each litter group in this study the average brain weight, the measurements 
L.F and W.D, the quotient of the cortical area divided by the cortical thickness 
(given also in table 8), and the ratio of the latter to the measurement L.F or W.D, 
for the sagittal and frontal sections. 
by (W.D X 100)/L.F is also given. 
published table 9a for each individual. 
are given at the foot of the table. 
The width-length index which is obtained 
This table was condensed from an un- 
The averages for the test and control groups 
The ratios given in this table 9 are based on the 
average of the individual ratios and not on those obtained directly from the average 
L.F or W.D and the average quotients 
{<2} cORT. CORT & 
g : AREA AREA 2 
Be fowsr| 23 ANE CORT CORT a 
pea way ta AND aoe E eae (GsTe THICKN RATIO| W. D| pHickn. | RATIO 7 f 
@ |WEHIGHT UX IN Ha 
. 2} SAGITTAL FRONTAL azd 
B SECTION SECTION S 
days grams mm, mm. mm. mm. hew 
Series I 
Ae ar idee T. I | 7—| 0.584) 9.28) 11.4 1.23) 9.88 8.9 0.89) 106 
h 'T. I0}15 1.024)11.85). 13.5 14200 leat 0.93} 101 
b, g C. I | 8—| 0.688) 9.90) 12.6 .27/10.60} 10.1 0.95} 107 
1 Oh YT 27812295) bed 1.20)12.85|) 10.9 0.84) 99 
Series I 
Brac sent T. I | 9—| 0.644! 9.70) 12.5 1.29)10.46 9.6 0.92) 108 
1 4h WOH) 1.052/12.10} 14.0 1.16)12.45) 10.9 0.88) 103 
b, d Ca sit6 0.543] 8.78), 11.0 1.24) 9.85 8.6 0.88} 112 
fag Mos C. IT/18—| 1.144)12.28} 14.1 1.16/12.40; 10.8 0.87} 101 
Series I 
Ca,e,d Av. UO LE LOS 27321 1450: 1. 14)12.17) 10.6 .| 0:87) 99 
b, e C. II}22—] 1.307|13.30} 15.8 1.19)12.98) 11.3 0.87) 98 
Series I 
D¥aruced T. I |12—| 0.778/10.90} 12.6 UES OSH 9.5 0.88} 99 
e AU, ENC 1.089)12.25}) 14.0 1.14/11.85 9.5 0.80} 97 
b Casing 0.870)10.95| 13.3 1.21/11.45) 10.0 0.82} 104 
f ; @. 1122 S220 12-40)" 1520 1.21/12.80 — — | 1038 
Series I ; f 
12), Joy, 1, Gl Ihe Ue 0.867|10.65) 13.0 22130 eek O eel 0.90) 106 
g, bh E20 1.122)12.10) 14.3 1.19)12.35) 10.9 0.88} 102 
e, f C. IL}17—| 1.179]/12.23) 14.4 1.18)/12.48) 11.4 0.92) 102 
