446 



BEAN. 



liPiul iiutline is «n exact blend of the Avliite student and tlie negro, except that 

 it is sliorter and slightly higher. The \\hite student's head is relatively large 

 frontally, the negro's is relatively large parietally, and the Igorot's is relatively 

 well developed throughout. 



The sagittal outlines of the 10 Igorot women of Atoc when compared with 

 similar outlines of 10 women students at the University of Michigan selected 

 with the same cephalic index show great dissimilarity. (Fig. 7.) The white 



Fig. 7. — Composite sagittal outlines of the heads of 10 Igorot women and 10 American 

 college women : Igorot, short, high outline : American, long, low outline. 



student head is longer, the Igorot liead is shorter and higher, and both are 

 depressed beneath the occipital and frontal regions. The somesthetic region of 

 the Igorot is protuberant, while that of the white student is unobtrusive. The 

 small number of individuals and the difficulty with the long hair of the Avomen 

 vitiate the records somewhat, but the differences in height and length are of the 

 same nature as in the men, although intensified in the women. 



The distinguishing differences between the Igorot and the American student 

 are the length and height of the head. The Igorot's is short and high, the 

 American student's is long and low. The Igorots, male and female, carry heavy 

 burdens by straps across the top of the head, which may influence the height 

 of the head from compensatory hypertrophy following the continual stimulus of 

 great pressure. The generous muscular development of the Igorot may also 

 have some influence in heightening the head, by increasing the size of the 

 somesthetic area of the brain. 



Tlie head height is a racial trait, as well, which may be inferred by 

 comparing the sagittal outlines of the three groups of Igorots. (Fig 8.) 

 The Highland Igorots have longer, higher heads than the Lowland- Igo- 

 rots. The Bontoc head is longer than the others, but not so high as the 

 Highland. This is an additional differentiating fact Ijetween the three 

 groups, and again the Bontoc is more nearly lil^e the wliito, whereas 

 the Lowland is less so than the others. 



