It is natural to suppose that they would be best acquainted with those countries which had embraced the faith of Mahomet; and that the prejudices and contempt with which his disciples have always regarded Christians, and, indeed, all who were of a different religion, would stand in the way of their seeking or acquiring information respecting those portions of the globe, the inhabitants of which were not of their faith. The exceptions to this are to be found principally in those countries, from which they derived the principal articles of their commerce; or which, though not proselytized, were conquered by them. Hence, Europe in general was scarcely known to them beyond their dominions in Spain, and the adjacent parts of France. There are, however, exceptions to this remark; for we find, scattered through their geographical works, notices tolerably accurate and just respecting Ireland, Paris, Antharvat, which seems to be England, the Duchy of Sleswig, the City of Kiov, and some other places. The whole of the north of Africa having been subdued, was thoroughly known by them; and they seem to have extended their arms, or at least their knowledge, as far into the interior as the banks of the Niger. On the east side, their arms had penetrated to Sofala; but on the west their knowledge does not appear to have reached beyond Cape Blanco, in the Bay of Arguin. The fortunate islands of the ancients were known to them, and the Pike of Teneriffe seems obscurely represented. Of the other islands and ports farther to the south on this side of Africa, it is impossible to ascertain their identity; or whether, as represented by the Arabians, they may not be regarded as among those fables in geography, in which all the ancient nations indulged. We may, however, trace some resemblance, in name or description, to the Canary Islands, the River Senegal, and the Rio d'Ouro. Malte Brun is of opinion, that their knowledge extended beyond Cape Boyador, for so long a time impassable by the Portugese. On the eastern side of Africa, the Ethiopia of the Arabians seems to have terminated at Cape Corrientes: their power and religion were established from the Cape to the Red Sea. In their geographical descriptions of this part of Africa, we may trace many names of cities which they still retain. But they adopted the error of Ptolemy in supposing that the southern parts of Africa and Asia joined; for Edrisi describes an extensive country, extending from the coast of Africa to that of India, beyond the Ganges.