ion is:

Male Female

Light-brown 12% 16%
Medium-brown to dark 77 68
Very dark 11 6
Golden-red and red 0 10

Dr. Hrdlicka's classification of the eye is as follows:

Male Female
Gray 2% 4%
Greenish 7 10
Blues 54 50
Browns 37 36

The head among Old Americans is in many cases notable for its good
development, particularly in males. Among 12 groups of male
immigrants[201] measured at Ellis Island under Dr. Hrdlicka's
direction in recent years, not one group quite equals in this respect
the Americans, the nearest approach being noted in the Irish, Bohemians,
English, Poles, and North Italians. The type of head, however, differs
among the Americans very widely, as is the case with most civilized
races at the present day.

Head form is most conveniently expressed by means of the cephalic index,
that is, the ratio of breadth to length. Anthropologists generally speak
of any one with an index of 75 (or where the breadth is 75% of the
length) and below this as dolichocephalic, or long-headed; from 75 to 80
is the class of the mesocephalic, intermediates; while above 80 is that
of the subbrachycephalic and brachycephalic, or round-headed. For the
most part, the Old Americans fall into the intermediate class, the
average index of males being 78.3 and that of females 79.5.

Barring a few French Huguenots, the Old Americans considered here are
mostly of British ancestry, and their head form corresponds rather
closely to that of the English of the present day. In England, as is
well known, the round-headed type of Central and Eastern Europe, the
Alpine or Celto-Slav type, has few representatives. The population is
composed principally of long-headed peoples, deriving from the two great
European stocks, the Nordic and the Mediterranean. To the latter the
frequency of dark hair and brown eyes is probably due, both in England
and America.

While the average of the Old Americans corresponds closely to the
average of the English, there is a great deal of variation in both
countries. Unfortunately, it is impossible to compare the