_A Memoir, containing various Informations respecting the Interior of Africa; transmitted from Mourzouk in 1799, by F. Horneman_ 105 No. IV. _Geographical Illustrations of the Travels and Informations of F. Horneman, with Maps; by Major James Rennell, F. R. S._ 121 No. V. _Observations on the Language of Siwah; in a Letter to the Rt. Hon. Sir Joseph Banks; by William Marsden, Esq. F. R. S._ 189 No. VI. _List of the Members of the Society, instituted for the Purpose of promoting a Discovery of the Interior Parts of Africa_ 193 * * * * * ERRATA. _Pag_ 6, _Line_ 9, _for_ roum, _read_ rouin. — 14, — 7, _for_ monachie, _read_ menschie. — 19, — 10, _for_ Logman, _read_ Logmam. — — — 13, _for_ fennel, _read_ flesh or meat. — — — 14, _for_ eyelid, _read_ eyebrow. — 46, — 9, _after_ watering-place, _insert_ called _Ennaté_. — 95, — 6, _for_ would, _read_ wouldst. — — — 27, _for_ rare, _read_ sure. — 105, — 9, _for_ Ungila and Supah, _read_ Augila and Siwah. — — — 15, _after_ is, _insert_ not. — 107, — 17, _for_ Burnû, _read_ Burgû. — — — 22, _for_ SSW, _read_ SSE. — 112, — 17, _for_ the culture of their land, _read_ their preparation of leather. =INTRODUCTION.= * * * * * The Society, instituted in the year 1788, for the purpose of exploring the Interior of Africa, in pursuing their _great_ design, adopted _wise_ and certain principles of procedure: they inquired, and then examined; they sought intelligence, and then directed research: their progress has been answerable to the just system of their pursuits and perseverance; and the Society, from the epoch of 1798, have been enabled to direct their efforts for further discovery, on data from actual visitation and experiment. A volume of the transactions of the Society, printed in the years 1790—92, sets forth in detail, such communications respecting the Interior of Africa, as might be collected on inquiry from British Consuls; from the recital of Negro, or Moorish traders; or from that of Shereefs and others, who had passed with the caravans on religious pilgrimage, in different directions between Mecca and the various and remote stations of Mahomedans in Africa.