Their foreheads are low, their noses more allied to the Aryan types than usual with their race, and their skulls of that form defined by craniologists as orthognathic brachycephalic.
"The Arawack Language of Guiana in its Linguistic and Ethnological Relations"
Daniel G. Brinton
Among the thirty-two men, nine are brachycephalic - that is, their cephalic index is greater than 80; twenty of the thirty-two are mesaticephalic, with cephalic index between 75 and 80; and only three are dolichocephalic - that is, the cephalic index is below 75. The nasal indexes of the thirty-two men show that the Bontoc man has the "medium" or mesorhine nose.
"The Bontoc Igorot"
Albert Ernest Jenks
The question as to whether a particular nation is a Kultur Volk or whether it is only a rabble of slaves depends entirely on whether the facies is square or oval, brachycephalic or oligocephalic.
"German Problems and Personalities"
Charles Sarolea