What is the definition of a Native?

Natives are: (a) Native Indians, Eskimos, and Aleuts of whole or part blood living in Alaska at the time of the Treaty of Cession of Alaska to the United States, and their descendants of whole or part blood; and (b) Indians and Eskimos who, between 1867 and September 1, 1937, migrated into Alaska from Canada, and their descendants of whole or part blood.