This testimony of public gratitude, reminds the editor that there are similar calls upon himself. He owes much to Captain King for his advice and direction, in a variety of instances, where Captain Cook's journal required explanation; for filling up several blanks with the proper longitude and latitude; and for supplying deficiencies in the tables of astronomical observations. Lieutenant Roberts was also frequently consulted, and was always found to be a ready and effectual assistant, when any nautical difficulties were to be cleared up. But particular obligations are due to Mr Wales, who, besides his valuable communications for this Introduction, seconded most liberally the editor's views of serving Mrs Cook, by cheerfully taking upon himself the whole trouble of digesting, from the log-books, the tables of the route of the ships, which add so greatly to the utility of this publication. Mr Wegg, besides sharing in the thanks so justly due to the committee of the Hudson's Bay Company, for their unreserved communications, was particularly obliging to the editor, by giving him repeated opportunities of conversing with Governor Hearne and Captain Christopher. The Honourable Mr Daines Barrington had the goodness to interest himself, with his usual zeal for every work of public utility, in procuring some necessary information, and suggesting some valuable hints, which were adopted. It would be great injustice not to express acknowledgements to Mr Pennant, who, besides enriching the third volume with references to his _Arctic Zoology_, the publication of which is an important accession to natural history, also communicated some very authentic and satisfactory manuscript accounts of the Russian discoveries. The vocabularies of the Friendly and Sandwich Islands, and of the natives of Nootka, had been furnished to Captain Cook, by his most useful associate in the voyage, Mr Anderson; and a fourth, in which the language of the Esquimaux is compared with that of the Americans on the opposite side of the continent, had been prepared by the captain himself. But the comparative Table of Numerals was very obligingly drawn up, at the request of the editor, by Mr Bryant, who, in his study, followed Captain Cook, and, indeed, every traveller and historian, of every age, into every part of the globe. The public will consider this table as a very striking illustration of the wonderful migrations of a nation, about whom so much additional information has been gained by our voyages, and be ready to acknowledge it as a very useful communication.