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 specimen is somewhat lower. These may be tribal but also simply individual 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 height but moderate breadth, resulting in a high upper facial index. Facial and alveolar prognathism and other features approach the prevalent Indian medium. LOWER MIDDLE YUKON INDIAN CRANIA SEX: MALE ---------+----------+----------+-----------+----------------+-------- Catalogue|Collection|Locality |Approximate| Vault: Diameter|Diameter No. | | |age of |antero-posterior| lateral | | |subject | maximum| maximum | | | | (glabella ad| | | | | maximum)| ---------+----------+----------+-----------+----------------+-------- 332512 |A. |Magi |Adults | 18.4| 13.8 |Hrdlička |(Bonasila)| | | | | | | | 332517 |do |Ghost |do | 18.1| 13.8 | |Creek, | | | | |near Holy | | | | |Cross. | | | | | | | | 332514 |do |do |do | 18.0| 13.9 | | | | | 332503 |do |Greyling |do | [28] (17.3)| (13.4) | |River | | | | |(above | | | | |Anvik). | | | | | | | | 332507 |do |Ghost |do | 18.2| 14.1