On his return southwards, a quick journey was made into the interior, near the line of the southern tropic, until a road, which had recently been travelled from the borders of the Cape Colony to Lake 'ngami, was reached, and in this way a practicable route between the Lake and the Atlantic was proved to exist. Few new objects of natural history were either collected or heard of, as the tract in question was for the most part a high barren plateau, that sup ported but little variety of either animal or vegetable life.