Engé-ena, from Gaboon, Africa. 279 
condition of this organ. In the comparative study of human 
crania, with reference to national peculiarities, much light 
has been derived from accurate measurements of their internal 
capacity. These may be readily obtained, and form a very 
important substitute for the actual dimensions of the brain 
itself. In the subjoined tables, I have given the results of 
the measurements of all the crania, both of the Enge-enas 
and Chimpanzees, 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 por- 
tion of the occiput having been destroyed, rendered exact 
measurement impracticable, though it is believed that the re- 
sult can differ but little from the truth. 
~laBLe I1.—Cranial capacity of Adult Engé-enas. 
Cubie Inches. 
1. Male, from Dr Perkins . F ; : 34:5 
2. Male, from Dr Savage. : : : 28°3 
8. Male, from Dr Perkins . 3 ‘ : 28°02 
4, Female, from Dr Savage . c : : 25-0 
Mean of the four crania . ¢ : x 28°92 
Taste IIl.—Cranial capacity of Adult Chimpanzees. 
Cubic Inches. 
1. Female . : u F : s 4 26:0 
2. Female . t 4 ; ‘ : ; 24:0 
3. Female . : 5 : : : F 22°0 
Mean capacity of three skulls. ; : 24:0 
Cranial capacity of Young Chimpanzees. 
4. First dentition complete . “ 20'0 
5. First dentition complete, but the wei obli- 
terated to a less extent than in the preceding 18:0 
The above results clearly indicate that there exists a wide 
range in the cranial capacity of the Engé-enas, amounting to 
nine cubic inches, when both sexes are included in the obser- 
-yation. While it would be desirable to have the measure- 
‘ments of a much larger number, we still have evidence for 
