Some physical measurements which I have should,
and I believe do, throw some light on the problem.

On September 26, 1902, at Ambuklao, Benguet, I measured ten Igorot men
from the villages of Baguio, Trinidad, Tublay, and Ambuklao. All were
adults, from 20 to 40 years of age, except one, a boy of 16, who was,
however, married and not inferior in stature to the others. These
men all belonged to the poor or "kailian" class, except one who had
arisen to the "principal" class from poor parentage. By "poor" class
in Benguet is meant those who have no cattle, rice terraces, mines,
or other productive property and are liable to the forced labor of
"polistas." The stature, arm-reach, and cephalic and nasal indices
of these Igorot are arranged below:

Height Arm-reach Cephalic Index Nasal Index

1481 1489 83.0 82.9
1490 1550 75.7 85.8
1496 1532 78.9 104.8
1499 1556 79.7 83.3
1500 1567 76.8 83.5
1512 1588 87.5 75.0
1522 1583 76.0 89.4
1546 1602 81.2 97.7
1596 1564 82.3 79.1
1615 1647 96.3 105.0

Of these statures all but one are "short," or below 1600. In fact
these men are only a little above the average stature of the
Negritos of Mariveles (1450). Five are within 50 mm. of a true
pygmy stature. The mean stature is 1500 to 1512, and the average
is identical, 1505.7. In all but one case the arm reach exceeds the
height, the excess varying from 8 to 36 mm. Six are brachycephalic,
and four mesaticephalic, the variation extending from 75.7 to 96.3. The
nasal index shows wide variation from 75 to 105, the mean being about
85. Four are platyrhinian, two exceeding 100, two are mesorhinian,
and four are midway between Topinard's mesorhinian and platyrhinian
types. The muscular development of these men is very strong, robust,
or "stocky." The skin color is coffee brown with saffron undertone,
lighter on trunk. Their hair is coarse and in nearly every case
straight, in one case only being slightly wavy. The hair is usually
scant on the body and about the face, but two men have relatively hairy
bodies and legs. The eye in some cases appears to be oblique. The ear
in every case is attached and normal. The chin is retreating an