The average stature of these men was 1535, a little less than the average stature of Igorot, and so a very short human height. The cephalic index for the seven, and the nasal index for six (one missing) are as follows:
| Cephalic Index | Nasal Index |
| 79.7 | 77.5 |
| 80.7 | 82.5 |
| 80.8 | 88.6 |
| 83.8 | 88.6 |
| 85.1 | 88.7 |
| 87.1 | 90.9 |
| 88.0 |
All are brachycephalic except one (79.7), and all are platyrhinian but one.
In the second community I measured twelve men and five women, with the following results:
| Stature Men | Stature Women | Cephalic Index | Nasal Index |
| 1610 | 1453 | 89 | 100 |
| 1583 | 1450 | 87 | 98 |
| 1582 | 1441 | 86 | 95 |
| 1580 | 1422 | 85.9 | 95 |
| 1570 | 1412 | 85 | 94 |
| 1544 | 84 | 93 | |
| 1532 | 83.7 | 90 | |
| 1503 | 83.3 | 89 | |
| 1486 | 83 | 89 | |
| 1467 | 81 | 88 | |
| 1439 | 81 | 87.8 | |
| 81 | 87 | ||
| 1240 (a boy) | 80 | 87 | |
| 80 | 83 | ||
| 79 | 82 | ||
| 79 | 82 | ||
| 76 | 76 |
The height of these men presents a wider variation, as would be expected in the larger number (1601 to 1437), but the mean and the general results are the same. The head index is brachycephalic except in the case of three, and all are platyrhinian, or nearly so, except one. Thus in these Ilongot we have a short race, even shorter than the Igorot, brachycephalic and platyrhinian. Their hair is wavy, except when it is curly. It is usually worn long. The face is occasionally hairy; a few individuals have been seen with sparse but quite long, curly beards. Their eyes are larger, finer, and more open than is usual in the Igorot and the Malay. One peculiarity of the face is noticeable: it narrows rapidly from the cheek bones to the chin, giving the face a pentagonal shape. The color may be a little lighter than in the Igorot, who is more exposed to sunlight than the Ilongot of the forest, and it is much lighter than in the Negrito, but by no means light enough to justify any likeness to either white or Mongol races.
In these people we have, I am quite sure, a mixture of primitive Malayan and Negrito, with more Negrito than in the case of the Igorot. Stature, curly hair, short head, and broad, flat nose—these are all negritic characters, as is also the hairiness of the face and body. In fact there can be no doubt of the presence of Negrito blood in the Ilongot, for the process of assimilation can be seen going on. The Negrito of a comparatively pure type is a neighbor of the Ilongot on both the south and the north. Usually they are at enmity, but this does not, and certainly has not in the past, prevented commingling. The culture of the Ilongot is intermediate, or a composite of Malayan and Negrito elements. He uses the bow and arrow of the Negrito and the spear of the Malayan as well. There are few things in the ethnography of the Ilongot that seem unusual and for which the culture of neither Malay nor Negrito does not provide an explanation. One curious peculiarity, however, is an aptitude and taste for decorative carving, applied to the door posts, lintels, and other parts of his house, to the planting sticks of the woman, to the rattan frame of his deer-hide rain-hat, etc. But except for this there seems little that is not an inheritance from the two above strains or a development due to isolation in these mountainous forests that have long been his home.
In concluding this account of the Ilongot I cannot forbear calling attention to what appears to me a striking resemblance between them and the “Sakay” of the Malay peninsula as these latter are photographed and described in Skeat and Blagden’s Pagan Races of the Malay Peninsula. There, as in the Philippines, we have a wavy-haired people (the Sakay) located in between, and obviously mingling with, the Negrito (“Semang”) on the north and the primitive (“Jakun”) Malayan on the south. The type is clearly intermediate between these two races, and every Sakay community seems to contain individuals that exhibit both pronounced Negrito and Malayan characters. There seem to be no culture elements in the ethnography of the Sakay that are not found in the life of Semang, Jakun, or allied peoples. And yet, in the face of what would seem to be the obvious and natural supposition that the Sakay is a half-breed of the Semang and Jakun, our authors, following Professor Rudolf Martin (Die Inlandstämme der malayischen Halbinsel), discover in the Sakay a distinct race of wholly different origin from the Semang and Jakun—but allied to the Veddahs of Ceylon! This seems to me to be creating a far-fetched theory where none is necessary. While I have not had an opportunity of studying the Sakay at first hand, I am tolerably familiar with Negrito and primitive Malayan, and the results of their intermarriage, and every fresh examination of the texts and illustrations above referred to increases my belief that the Sakay, like so many of the types of the Philippines, is an exhibit to the widely diffused Negrito element in Malayan peoples.