At the close of the year 1821 the Marquis de Clermont Tonnerre, then Minister of Marine, received the scheme of a new voyage from two young officers, MM. Duperrey and Dumont d'Urville. The former, second in command to Freycinet on board the _Uranie_, after having rendered valuable assistance to the expedition by his scientific researches and surveys, had within the year returned to France; the other, the colleague of Captain Garnier, had brought himself into notice during the hydrographical cruises in the Mediterranean and Black Seas, which it had fallen to Captain Garnier to complete. He had a fine taste for botany and art, and had been one of the first to draw attention to the artistic value of the Venus of Milos which had just been discovered. These two young _savants_ proposed in the plan submitted by them to make special researches into three departments of natural science--magnetism, meteorology, and the configuration of the globe. "In the geographical department," said Duperrey, "we would propose to verify or to rectify, either by direct, or by chronometrical observations, the position of a great number of points in different parts of the globe, especially among the numerous island groups of the Pacific Ocean, notorious for shipwrecks, and so remarkable for the character and the form of the shoals, sandbanks, and reefs, of which they in part consist; also to trace new routes through the Dangerous Archipelago and the Society Islands, side by side with those taken by Quiros, Wallis, Bougainville, and Cook; to carry on hydrographical surveys in continuation of those made in the voyages of D'Entrecasteaux and of Freycinet in Polynesia, New Holland, and the Molucca Islands; and particularly to visit the Caroline Islands, discovered by Magellan, about which, with the exception of the eastern side, examined in our own time by Captain Kotzebue, we have only very vague information, communicated by the missionaries, and by them learnt from stories told by savages who had lost their way and were driven in their canoes upon the Marianne Islands. The languages, character, and customs of these islanders must also receive special and careful attention." The naval doctors, Garnon and Lesson, were placed in charge of the natural history department, whilst the staff was composed of officers most remarkable for their scientific attainments, among whom may be mentioned MM. Lesage, Jacquinot, Berard, Lottin, De Blois, and De Blosseville. The Academy of Sciences took up the plan of research submitted by the originators of this expedition with much enthusiasm, and furnished them with minute instructions, in which were set forth with care the points on which accurate scientific information was especially desirable. At the same time the instruments supplied to the explorers were the most finished and complete of their kind.