I adopt this term in deference to the usage of ethnologists, without professing to give a value to it in the way of classification, since I think it much more likely that the so-called Kolúch languages form a sub-division of the Eskimo than a separate substantive class of their own. _Geographically_, however, the term means the languages spoken along the coast of the North-Pacific from Cook's Inlet to the parts immediately north of Queen Charlotte's Islands; languages which are distinguished from the Eskimo to the north, the Athabascan to the east, and the Nas and Haidah to the south, and languages which _politically_ belong to Russian America; since the Tungaas, which is the southernmost (so-called) Kolúch dialect, is the most northern with which the traders of the Hudson-Bay Company come in contact. The extension towards the interior seems limited. The particular Kolúch dialect best known is that of Sitka, which, in Lisiansky's Voyage, is compared with the Kenay, Kadiak, and Unalashkan. Now it is a fact upon which the present author lays considerable stress, that the affinities between the Sitka and Kenay, which are _both_ considered as Kolúch, are but little more numerous than those between the Sitka and Kadiak, the Kenay and Unalashkan, &c., where only _one_ is considered as Kolúch. The chief Kolúch dialects are as follows:-- _The Kenay of Cook's Inlet._--These are about 460 families strong. They assert that they are derived from the hills of the interior, whence they moved coastwards. In the way of mythology, they are descended from the _raven_. _The Atna of the Copper River._--Here the reader must be cautioned against being misled by the name; as it will appear again, applied to another division of Indians, the Atnas or Shushwap, who are a distinct people from the Atnas of the Copper River. These last occupy the river last-named; where they work in iron, as well as in copper, burn their dead, and derive their descent from the _raven_. _The Koltshani._--These are the Kolúches of the interior, falling into two divisions; the language of one of which is intelligible to the Atnas, and the Kenays equally. The more distant one is savage and inhospitable, with the credit of indulging in cannibalism. The name seems to belong to the Atna language; where _Koltshani_=_stranger_. It also seems the word on which the scientific term, Kolúch, has been founded.