From Anvik downward along the river the type of the people becomes plainly more Eskimoid and on the whole more robust. But as one can frequently meet farther up the river individuals who remind one more or less of the Eskimo, so here it is frequent to see faces that look like Indian. Whether due to old mixture or to other reason, the fact is that there is no line of somatological demarcation in the living populations of the river, and the same applies, as will be seen later, to the skulls. SKELETAL REMAINS OF THE YUKON The first Yukon Indian skull measured was that of a half-chief of the Nulato group, collected in the early sixties by William H. Dall. There are now three records of this skull, originally and again now a Smithsonian specimen, one in Wyman ("Observations on Crania," Proc. Bost. Soc. Nat. Hist., 1868, XI, 452, No. 7530), one in the Otis "Catalogue" (35, No. 259), and one in Hrdlička's "Catalogue of Human Crania in the United States National Museum Collections" (p. 30, No. 242925). It is a normal, well-developed male skull, which gives no suggestion of mixture. The true measurements of this "type" specimen, taken by present-day instruments and methods, are as follows: _Yukon Indian skull No. 242925_ Vault: Length cm 18.4 Breadth cm 14 Height to bregma cm 13.8 Cranial index _76.1_ Mean height index _85.2_ Height-breadth index _98.6_ Cranial module (mean diameter) cm 15.40 Cranial capacity c. c. 1,520 Face: Menton-nasion (teeth but slightly worn) cm 12.1 Alveolar point-nasion cm 7.3 Diameter bizygomatic maximum cm 14 Facial index, total _86.4_ Facial index, upper _52.1_ Facial angle 69° Alveolar angle 53.5° Orbits: Right-- Height cm 3.25 Breadth cm 4.2 Left-- Height cm 3.45 Breadth cm 4 Mean index _81_ Nose: Height cm 5.1 Breadth cm 2.5 Index _49_ Upper alveolar arch: Length cm 5.7 Breadth cm 6.7 Index _85.1_ Basio-facial diameters: Basion-alveolar point cm 10.6 Basion-subnasal point cm 9.4 Basal-nasion cm 10.5 The skull is seen to be mesocephalic, rather high, and of good brain capacity; the face is of medium Indian proportions; the orbits are unequal, rather low; the nose is of medium height and breadth; the upper dental arch, the basic-facial diameters, and the facial and alveolar angles, are all near medium Indian.