tribe names from 1817 Thomson atlas

[Mike Cleven]

The frontispiece of the relatively new Historical Atlas of British
Columbia and the Pacific Northwest is the northwest part of the
"America" map from Thomson's New General Atlas, John Thomson, 1817.  The
caption comments on irregularities in the geography shown.  More
interesting for linguists and ethnologists are some tribe names shown -
Slouacus Indians along the coast from the Skeena northwards, Nanscud
Indians in the area between the Peace and Fraser River basins, Snare
Indians in what should be the Cariboo, the Nagiler Indians just to their
south, shown were the Chilcotin actually is but possibly refering to the
Nlaka'pamux and the Skilut at the head of Puget Sound (Olympia, more or
less); any comments on these names and their etymologies or sources?
The other national names shown are easy enough to guess - Snake,
Cal-la-poe-wah, Wil-lewan and Flatheads.  Flathead Lake is shown as Flat
Bo L. and Pend d'Oreille Lake is shown as - (!) - Ear Bob Lake.

MC