SPF Te ee ee: 
ee ca ne ae 
eee 
J. Wyman on the Engé-ena. 39 
the tests of elevation or degradation. The bodies of the adult an- 
thropoid animals so seldom fall into the hands of the anatomist, 
that it becomes extremely difficu}t to accumulate observations on 
the actual condition of this organ. In the comparative study of hu- 
man crania with reference to national peculiarities, much light has 
been derived from accurate measurements of their internal capacity. 
hese may be readily obtained and form a very important sub- 
stitute for the actual dimensions of the brain itself. In the sub- 
joined tables I have given the results of the measurements of all 
the crania both of Engé-enas and Chimpanzées to which I have 
had access while writing these remarks, and as they have been 
repeated in each case several times over, they may be regarded as 
nearly accurate. ‘The capacity of the third cranium is alone 
doubtful; a portion of the occiput having been destroyed, render- 
exact measurement impracticable, corer it is believed that 
the result can differ but little from the tr 
Taste IT—Cranial capacity of adult Sigal. 
Cubic inches. 
I. Male from Dr. Perkins, . : 34:5 
II. Male from Dr. Savage, . : , 28:3 
IIL. Male from Dr. Perkins, : j . 2802 
IV. Female from Dr. Savage, é ‘ 250 
Mean of the four crania, . i .  SBOs 
Taste I1].—Cranial capacity of adult Chimpanzées, Be 
Cubic inches. 
I. Female, . : ‘ ‘ . . 260 
Il. Female, : : . tagals ‘ 24:0 
Ill. Female, . : A : . 22:0 
Mean capacity of three skulls, i 24:0 
Cranial capacity of young Chimpanzées. 
IV. First dentition complete, 200 
V. First eae complete ‘but the sutures 
obliterated to a less extent than in the 
recadindl ; : 18-0 
The above results clearly sitionks that ce exists a wide 
Tange in the cranial capacity of the Engé-enas, oranee to nine 
cubic inches, when both sexes are included in the observation, 
While it would be desirable to have the Hedchsewietiss of a much 
larger number, we still have evidence for concluding, that in the 
gé-ena, as in man,* the capacity of the cranium of the male is 
eral gathough re female brains exceed in we ight particular maki brains, the ewer 
Is sufficie oe howl that the adult male <——* is heavier than that 
of the female, th being from 5 to 6 0 rom the examination 
of 278 male brains pees of 191 females, “an average vous } is deduced of ya * for 
the oz. for the female.” Quain and Sharpey’s, Quain’s Anatomy ; 
edited by Seay Leidy, M. LD, Vol. ii p. 185. Philadelphia, 1840. 
