16 JOURNAL OF COMPARATIVE NEUROLOGY. 
Ratios of Body-weights and Brain-weights. 
(Brain-weight =1.) 
Total of 56 cases, I 20816: 
20 Males (1079-5190 gms.) I's 21562: 
22 Females (1106-2286 ‘‘ ) I? 20:672 
Macacus cynomolgus. There are 14 specimens of this 
species, 7 of males, 6 of females, and 1 of unknown sex. 
None of these, to judge by the body-weight, were full-grown 
animals. The highest brain-weight, 100 grammes, is that of a 
female weighing only 1203 gms., a case which must for the 
present be regarded as exceptional. The average weights 
range between 50 and 67 gms. for the larger animals of the 
series. 
TABLEMIE 
Total , Total Averages. 
No. of |Range of Body-| Body- Brain- Body- Brain- 
Sex. Cases Weight. Weights. | Weights.| Weight. | Weight. 
Males . 3 (1567-2070 gms){ 5697.0 191.0 1899.0 63.7 
a 4 ( 420- 918 ‘** )| 2460.0 197.0 615.0 49.2 
Females 5 (1126-1803 ‘* )} 6771.0 306.0 1354.2 61.2 
“6 1 ( 919) 919.0 62.0 919.0 62.0 
(?) I (1231) 1231.0 62.0 1231.0 62.0 
Ratios of Body-weights and Brain-weights. 
(Brain-weight =1.) 
Total of 14 cases, I 3/20,8 72 
3 Males (1567-2070) I 1 20,82: 
5 Females (1126-1803) I 3.220 as 
Macacus nemestrinus. In eight of the ten members of this 
species the body-weight had been noted (5 males; 3 females.) 
Two of the males, weighing respectively 8500 and 8610 gms. 
have brains weighing 128 and 122 gms., giving ratios of 1 : 66 
and 1: 71. 
TABLE IV. 
Total Total Averages. 
No. of |Range of Body-| Body Brain Body Brain 
Sex. Cases Weights. Weights. | Weights.| Weight | Weight. 
Males 5 (4590-8610 gms)} 33930.0 592.0 6786.0 118.4 
Females 3 (2287-3580 ‘* )' 8967.0 298.0 2989.0 96.0 
