Note 7 — Physical Type and Relationships
Reading edition
In the introduction to the present volume (p. 236) I have expressed the opinion that the Tinguian and Ilocano are identical, and that they form one of the waves of a series which brought the Apayao and western Kalinga to northern Luzon, a wave which reached the Islands at a later period than that represented by the Igorot, and which originated in a somewhat different region of southeastern Asia.7