Considerable importance in anthropometry is attached to the study of the nose. The typical Aeta nose may be described as broad, flat, bridgeless, with prominent arched alae almost as high as the central cartilage of the nose and with the nostrils invariably visible from the front. The nasal index obtained by dividing the nasal breadth by the height from the root of the nose to the septum and multiplying the quotient by 100 serves to indicate the group to which the individual belongs. Thus it will be seen that races with a nasal index of more than 100 have a nose wider than it is long. This is a marked characteristic of the Aeta. Of the 76 Aeta I measured, 25 were _ultraplatyrhinian_--that is, had a nasal index greater than 109. One individual, a female, showed the surprising index of 140.7, the greatest so far recorded to my knowledge. The greatest nasal index among the males was 130.7. Only one example of a _mesorhine_ nose was noted, also of a female, and but 7 _platyrhine._ The most of them belonged in the _hyperplatyrhine_ group. The following table will show the proper classification of the individuals measured by me: Nasal index of Zambales Negritos Group Sex and number Males Females Mesorhine (69.5-81.4) -- 1 Platyrhine (81.5-87.8) 3 4 Hyperplatyrhine (87.9-108.8) 27 16 Ultraplatyrhine (109 and over) 51 10 The shape of the eye varies from the round negroid of the pure bloods to the elongated mongoloid in the case of mixed types. The color of the eyes is a very dark brown or black. The lips are medium thick, far less thick than the lips of the African negro, and are not protruding. The hair of the Aeta is uniformly kinky in the case of the pure types. Individuals were noted with other negroid features but with curly hair, showing a probable mixture of blood. The hair grows low on the forehead and is very thick. Eyebrows are not heavy, save in particular instances, and beard is very scanty, though all adult males have some beard. There is very little body hair on adults of either Sex, except in the axillary and pubic regions, and it is scant even in these places. The northern Negritos have practically none in the armpits. Two or three old men were seen with a coating of hair over the back, chest, and legs. The head hair is uniformly of a dirty black color, in some instances sunburned on top to a reddish brown. It turns gray at a comparatively early age, and baldness is frequent. (See Pls. XI, XII, XIII, XIV, XV, XVI.)