GROUP 
BRAIN 
WEIGHT 
TABLE 2—Continued 
Ixd 
(10 days) 
XGA: 
(20 days) 
XIle 
RO a 
—_ 
ie) 
(JC) 
grams 
0.610 
0.617 
0.690 
0.639 
_ 
bo 
(se) 
— 
~ 
SS) 
qn 
cs 
ae a 
co 
bo 
N 
OBSERVED eee CORRECTED 
Area of W.D Area of 
Nea fol eek Bak Erde: ofepee a 
mm 2 mm.2 mm. mm. mm.2 mm.2 
9.9 21 10.15 8.50 14.1 31.0 
9.6 216 10.55 8.65 14.3 32.2 
11.6 23.0 10.60 9.40 14.8 30.2 
10.4 22.3 1.1? 14.4 31.1 
itd 22.1 11.00 9.20 15.9 31.6 
10.2 20.3 11.20 8.70 16.9 33.6 
10.7 21.2 He 16.4 82.6 
10.6 21.8 11.15 8.60} 18.8 36.7 
11.3 23.6 10.60 8.30 18.5 38.6 
13.6 28.5 11.85 10.20 18.4 38.5 
13360 28.8 11.40 9.90 18.2 38.3 
13.4 Plath 11.45 9.60 19.1 39.5 
13.1 31.2 11.75 10.20 17.4 41.5 
12:6 26.9 1.20? 18.4 88.9 
13.5 28.4 11.80 9.70 | 20.0 42.0 
13.8 29.4 12.15 10.10 | 20.0 42.6 
14.3 28.4 11.95 9.80 | 21.3 42.4 
13.9 28.7 eee 20.4 42.8 
14.1 30.3 12.40 10.30 | 20.4 44.0 
13.4 30.5 12.40 TOM ay \ee2020 45.5 
13.2 25.9 12.10 9.40 | 21.8 43.0 
LB6 28.9 1k Yos 20.7 44.2 
135.57 28.7 12.90 10R2Z05| Me21e8 45.7 
13.3 27.8 13.15 ORSON |e zled, 45.4 
14.6 30.8 12.70 102308 e2262 47.0 
12.8 27.2 12.50 9.80 | 21.0 44.5 
HB) 28.6 1.26 21.7 45.7 
15.0 SLA9 12.95 10.70 | 22.0 46.8 
1S) 23.6 12.90 9.10 | 24.0 47.5 
13.5 27.8 Th oe 23.0 47.2 
13.9 28.3 13.20 1OF259) 230 47.1 
13.9 29.9 12.70 10.00 | 22.5 48.3 
12.2 28.2 13.35 9.70 | 238.2 53.3 
13.3 29.0 13.15 9°85 || 23.7 51.8 
16.3 34.8 13.10 10.90 | 23.6 50.3 
13.9 30.0 1.292 Qane a \ nro ee, 
70 
PERCENT- 
AGE OF 
CORTICAL 
AREA IN 
TOTAL 
SECTION 
per cent 
46 
44 
49 
46 
