The dry season had now commenced, and Jobson observed that the waters of the river were gradually sinking lower and lower; but the city, the roofs of which were plates of gold, haunted the busy fancy of Jobson, and he used every endeavour to ascend the river, in order that he might discover the sources from which the plates of gold were made. It was evident to him, that Buckar Sano had either practised an imposition upon him, or that he had grossly exaggerated the treasures of the wonderful city; but in regard to the former, he could not divine any motive by which Buckar Sano could be actuated in imposing upon him; and in regard to the latter, making every allowance for exaggeration, it might eventually transpire, that the country abounded with the precious metal, although perhaps not exactly in the extraordinary degree as reported by Buckar Sano. After encountering many difficulties, he was obliged to relinquish the farther ascent of the river, nor did he even reach the point where the previous discoveries of Thompson terminated, which may be considered as the utmost boundary of the discoveries of that period; indeed many years elapsed before any travellers passed the limits at which Thompson or Jobson had arrived. The latter gives a strange report, which, however, was in some degree partially circulated before him, of a silent traffic being carried on in the interior between the moors and a negro nation, who would not allow themselves to be seen. "The reason," he adds, "why these negroes conceal themselves, is, that they have lips of an unnatural size, hanging down halfway over their breasts, and which they are obliged to rub with salt continually, to keep them from putrefaction." Thus even the great salt trade of the interior of Africa is not wholly untinged with fable. The stream became at last so shallow, that Jobson could not ascend any farther, and he began his voyage downwards on the 10th February, intending to return at the season when the periodical rains filled the channel. He was, however, never able to execute this purpose, as he and the company became involved in a quarrel with the merchants, whom he visits with his highest displeasure, representing them as persons alive only to their own immediate interests, and utterly regardless of any of those honourable motives with which all commercial dealings ought to be characterised.