Great Britain. Admiralty, **E .186.7 Magnetical and meteorological obServations at lake Athabasca and Fort Simpson, by J. H. Lefroy: and at Fort Confidence, in Great Bear lake, by sir J. Richardson.
Lond : Longman, Brown, Green and L. 1855. . « «o» 391 pp. 8°, folded sheet.
- Lefroy, John ee Richardson, Sir John
Athabasca, lake,