-----------+-------+-------++----------+-------+-------
| Male | Female|| | Male | Female
-----------+-------+-------++----------+-------+-------
| (224) | (217) || | (218) | (207)
Right side | 119.6°| 124.5°||Left side | 119.5°| 124.3°
-----------+-------+-------++----------+-------+-------
In the male Munsee Indians the angle was 118°; in those of Arkansas and
Louisiana, 118.5°; in those of Peru (Martin, Lehrb., 884), 119°. In the
whites, males, the average angle approximates 122°; in the Negro, 121°
(Topinard, Martin).
The angle in the female in the Eskimo is to that of the male as 104 to
100; in the Arkansas and Louisiana series it was 103. In the whites the
proportion seems to be a little higher.
There are evidently, if we exclude the whites in whom the shortness
of the jaw conduces probably to a wider angle, no marked racial
differences, but the subject needs a more thorough study on large
series of sexually well-identified specimens, carefully selected as to
age.
The average angle on the right differs in the Eskimo but very slightly
from that on the left, though individually there are frequent
unequalities.