In the course of Park's communications with the Colonial Office, Lord Camden had intimated a desire to be furnished with a written statement of Park's opinions, both as to the plan of the expedition, and the particular objects towards which he conceived that his attention ought to be chiefly directed during the intended journey. In compliance with this request, he had, during his leisure in the country, drawn up a Memoir upon these subjects, which he presented at the Colonial Office within a few days after his arrival in London. As this paper formed the ground work of the official instructions which were afterwards given to Park, and is in other respects interesting and important, it is here inserted at length. Memoir _delivered by_ Mungo Park, _Esq. to Lord_ CAMDEN, _on the 4th of October_, 1804. "A particular account--1st. of the objects to which Mr. Park's attention will be chiefly directed in his journey to the Interior of Africa: 2dly. of the means necessary for accomplishing that journey; and 3dly. of the manner in which he proposes to carry the plans of Government into execution. "The objects which Mr. Park would constantly keep in view are, _the extension of British Commerce, and the enlargement of our Geographical Knowledge_. "In directing his enquiries with respect to commerce, he would propose to himself the following subjects as worthy of particular investigation. "1st. The route by which merchandize could be most easily transported to the Niger. This would be accomplished by attending to the nature of the country, whether wooded or open; having water or not, being abundant in provisions, or otherwise, and whether capable of furnishing the necessary beasts of burden. "2dly. The safety or danger of that route. This, by considering the general character of the natives, their government, &c.; the jealousies that European merchants would be likely to excite, and the guard that would be necessary for the protection of the caravan. "3dly. The return of merchandize. This by making out lists of such articles as are produced in each district, and of such as are imported from the neighbouring kingdoms. "4thly. The value of merchandize. This could only be done by comparing the articles with each other; with gold as a standard, and with European articles in exchange. "5thly. Profits of trade. This could be ascertained by bartering one African article for another; an European article for an African, or an African or European article for gold. "6thly. The extent to which such a commerce might be carried. This, by a careful and cautious comparison of the above, connected with habits of industry in the natives. "Mr. Park would likewise turn his attention to the general fertility of the country, whether any part of it might be useful to Britain for colonization, and whether any objects of Natural History, with which the natives are at present unacquainted, might be useful to Britain as a commercial nation.