In respect to the foramen magnum, there is so much irregularity and
so little special significance in the ratio between the two main
diameters, length and breadth, that the writer prefers to use the mean
measurement,
(l + br)
————————,
2
which stands in some relation to stature and probably to muscular
development, and which may have more than passing interest in the study
of racial and other groups. The average in the Munsee is, as usual,
perceptibly higher in the males than in the females. It is almost
identical in both sexes with that of the Indian skeletal remains from
the Louisiana mounds (Munsee, 7 males, 3.5; 8 females, 3.2: Louisiana,
10 males, 3.45; 14 females, 3.18 cm.), which were nearly alike in
stature, but it is slightly superior to that of the Indians from
Arkansas, who were also of practically the same height (Arkansas, 22
males, 3.3; 16 females, 3.14 cm.).