224 NAOKI SUGITA 
TABLE 16 
Giving for each litter group in this study the average age, the initial brain weight in 
the fresh condition and the brain weight after extraction in 80 per cent alcohol 
(for twenty-four hours) and 90 per cent alcohol (for twenty-four hours) by a uniform 
procedure, and the ratio of the latter to the initial weight. The corresponding 
standard values for the same age were calculated on the basis of the data in table 
15 and compared with each and the difference between them given as an average for 
each group. This table was condensed from table 16a (unpublished) for individual 
cases. The averages for the test andcontrol growps are given at the end of the table. 
AFTER EXTRACTION 
IN 80 PER CENT AND 
90 PER CENT Standard See 
SERIES, LITTER AND TEST AyeRaGn.| “VEEAGE steers fie fOr, ENCE 
GROUP CONTROL AGE Hehe oan of hee FROM THE 
mal Ratio to same age | STANDARD 
arn the initial 
weight | brain, 
a days grams grams per cent per cent per cent 
Series I : 
Ac, a, d, f Ny JE T= 15025848) 40.4501 77: 25)| 757 epi 
h 40S IU 15 1.024 0.779 76.0 72.8 +3.2 
b, g rai 8— 0.688 0.517 Deo 75 4 +0.3 
i (G5 JUL 17 1.278 0.928 (P00 72.3 +0.4 
Series I 
inate cena AR sclt 9— 0.644 0.488 dor 74.9 +1.2 
i 405 IL 19 1.052 | 0.799 | 76.0 (fibatt +4.3 
b, d Cali 6 0.548 0.414 76.4 UWGio Al +0.3 
g, h, j (Ge JU 18— 1.144 0.826 (22 72.1 +0.1 
Series I 
Crane PTO 20 1.105 0.816 73.9 729 1.0 
b, e Cyn 22— 130% 0.934 TANS 71.8 —0.3 
Series I 
D a,c, d 19 12=- || 0.778) (O2584 | (75.0) | 78-7 eee 
e Ghee Ul 18 1.089 0.795 Jal) 72.0 +1.0 
C. 1 9 0.870 0.656 75.4 74.6 +0.9 
f Ch ul 22 1.220 0.863 70.8 LEO +0.2 
Series I 
Ea, b, c, d Tesal! 12— 0.835 0.626 75.0 UBall +1.3 
e Go Ti 13 1.024 0.760 74.1 73.4 +0.7 
Series II 
F a, b altel: 13— 0.832 | 0.636) 76.7 73.4 +3.3 
e-k IS IH 25-- 1.198 0.862 U8) 70.7 +1.6 
