Journal of a Voyage for the Discovery of a North - West Passage from the Atlantic to the Pacific, Performed in the Years 1819 - 1820 in His Majesty's Ships Hecla and Grupper (etc.): A Supplement to the Appendix of Captain Parry's Voyage for the Discovery of a North - West passage in the years 1819 - 1820 containing an account of the subjects of natural history. Supplement. Suppl