Archeologists and ethnologists generally assume that the art of weaving on the loom was learned by the Navahos from their Pueblo neighbors. All the facts in the case seem to bear out this supposition. Yet, as is well known, the Navahos are a part of the great Athabascan family, which has scattered, by separate migrations, from Alaska into California, Arizona and New Mexico. Many of the Alaskans are good weavers, and according to Navaho traditions, their ancestors, when they came into the country, wore blankets that were made of cedar bark and yucca fibre. Even in the Alaska (Thlinket) blankets, made today of the wool of the white mountain goat, cedar bark is twisted in with the wool of the warp. Why, then, should not the Navaho woman have brought the art of weaving, possibly in a very primitive stage, from her original Alaskan home? That her art, however, has been improved by her contact with the Pueblo and other Indians, there can be no question, and, if she had a crude loom, it was speedily replaced by the one so long used by the Pueblo. Where the Pueblo weaver gained her loom we do not know, whether from the tribes of the South or by her own invention. But in all practical ways the primitive loom was as complete and perfect at the time of the Spanish conquest as it is today.