VIRO EGREGIO MAGNO DE BEHM; qui, Imperatricis Augustissimæ Catherinæ auspiciis, summâque animi benignitate, sæva, quibus præerat, Kamtschatkæ littora, navibus nautisque Britannicis, hospita præbuit; eosque, in terminis, si qui essent Imperio Russico, frustrà explorandis, mala multa perpessos, iteratâ vice excepit, refecit, recreavit, & commeatû omni cumulatè auctos dimisit; REI NAVALIS BRITANNICÆ SEPTEMVIRI in aliquam benevolentiæ tam insignis memoriam, amicissimo, gratissimoque animo, suo, patriæque nomine, D.D.D. MDCCLXXXI. This public testimony of 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; of 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 the valuable communications which have been adopted in 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 intrinsic merit 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 our acknowledgments to Mr. Pennant, who, besides enriching the third volume with references to his _Arctic Zoology_, the publication of which will be an important accession to Natural History, also communicated some very authentic and satisfactory manuscript accounts of the Russian discoveries.