Other hypotheses 332 Theories as to the origin of the Eskimo 333 Asiatics 333 American 340 European 347 Opposed to European 351 Miscellaneous and indefinite 351 Discussion and conclusions indicated by present data 355 Summary 361 Bibliography 367 Index 629 ILLUSTRATIONS PLATES Page 1. _a_, "Old Minto" on the Tanana. Indian village. (A. H., 1926.) _b_, Present Nulato and its cemetery (on hill to the right of the village) from some distance up the river. (A. H., 1926.) _c_, The Greyling River site, right bank, 22 miles above Anvik; site and graveyard (male skeleton) from top of knoll. (A. H., 1926.) 54 2. _a_, View on the Yukon from above Kaltag. (A. H., 1926.) _b_, Indian burial ground, middle Yukon. (A. H., 1926.) _c_, Anvik, from the mission. (A. H., 1926.) 54 3. _a_, Midnight on the Yukon. _b_, Lower middle Yukon: painted burial box of a Yukon Indian (before 1884) said to have been a hunter of bielugas (white whales), which used to ascend far up the Yukon 64 4. _a_, Eskimo camp below Paimute, Yukon River. _b_, Old "protolithic" site 12 miles down from Paimute, right bank, just beyond "12-mile hill" (skull, bones, stones). _c_, "Old" site in bank seen in middle of picture, 12 miles down from Paimute, opposite that shown in preceding figure. (A. H., 1926.) 64 5. _a_, Cape Prince of Wales from the southeast. (A. H., 1926.) _b_, Village and cemetery slope. Little Diomede. (A. H., 1926.) 96 6. _a_, Asiatics departing for Siberia from the Little Diomede Island. (Photo by D. Jenness, 1926.) _b_, _c_, "Chukchis" loading their boat with goods on Little Diomede Island, before departure for Siberia. (Photos by D. Jenness, 1926.) 96 7. _a_, Eskimos from East Cape arriving at Nome, Alaska. _b_, East Cape of Asia (to the southward). (Photo from Joe Bernard.) 96 8. A group of women at Shishmaref. (Taken at 2 a. m. by A. H., 1926.) 96