152 



ANTHROPOLOGICAL SURVEY IN ALASKA 



[BTH. ANN. 4G 



Yukon Indian slcull No. 2J/2925 



Vault : 



Length cm 



Breadth cm 



Height to bregma cm 



Cranial index 



Mean height index 



Height-breadth index 



Cranial module (mean di- 

 ameter) cm 



Cranial capacity c. c 



Face: 



Menton-nasion ( teeth but 



slightly worn) cm 



Alveolar point -nasion cm 



Diameter bizygomatic maxi- 

 mum cm 



Facial index, total 



Facial index, upper 



Facial angle 



Alveolar angle 



18.4 

 14 

 13.8 

 76. 1 

 85. 2 

 98. 6 



15.40 

 1, 520 



12.1 

 7.3 



14 



86. J t 

 52.1 

 69° 

 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 J,9 



Upper alveolar arch: 



Length cm-- 5.7 



Breadth cm.. 6. 7 



Index 85. 1 



Basio-faeial diameters : 



Basion-alveolar point cm 10. 6 



Basiou-subnasal point_cm 9. 4 



Basal-nasion cm 10. 5 



The skull is seen to be mesocephalic, rather high, and of good 

 lirain 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 basio-facial diameters, and the facial and 

 alveolar angles, are all near medium Indian. 



There was another Indian skull in the five Wyman reported, but 

 its identity is uncertain. A later collection by Dall included three 

 Indian female crania from Alaska, but their exact provenience is 

 uncertain; their measurements are given in my catalogue. 



On the 1926 trip I succeeded in collecting directly from the burials 

 along the lower middle Yukon 17 adult skulls and skeletons. Such 

 material is both scarce and difficult to obtain, due to the attitude 

 of the Indians. All the specimens in the collection are from the 

 Russian times on the river. A few of the skulls show traces of 

 Eskimoid in their features, but none offer a suspicion of a mixture 

 with the whites. The measurements are given below. They partly 

 agree, partly disagree, with those of the Nulato skull. The vault, 

 the breadth of the nose, the dimensions of the dental arch, are much 

 alike, but the height of the face, nose, and orbits in the Nulato speci- 

 men is somewhat lower. These may be tribal but also simply indi- 

 vidual differences. We may generalize by stating that the lower 

 middle Yukon Indian was mesocephalic, with a fairly high vault, 

 and moderate capacity. The face was of relatively good heigbt but 

 moderate breadth, resulting in a high upper facial index. Facial 

 and alveolar prognathism and other features approach the prevalent 

 Indian medium. 



