Schomburgk’s journey has removed all farther doubt. “It is difficult to believe,” says Mr. Hillhouse, in his interesting memoir on the Massaruni, “that the tradition of a large inland sea is wholly unfounded. According to my views, the following circumstance may have given rise to the belief in the existence of the fabulous lake of the Parime. At some distance from the rocky fall of Teboco the waters of the Massaruni present to the eye as little motion as the calm surface of a lake. If at a more or less remote period the horizontal granitic strata of Teboco had been totally compact and without fissures, the waters must have been at least 50 feet above their present level, and there would have been formed an immense lake 10 or 12 miles in width, and 1500 or 2000 miles in length.”[IJ] The extent of this supposed inundation is not the only reason which prevents me from acceding to this explanation; for I have seen plains (Llanos), where, during the rainy season, the overflowing of the tributaries of the Orinoco annually covered a surface of 6400 square miles. The labyrinth of ramifications between the Apure, Arauca, Capanaparo, and Sinaruco (see maps 17 and 18 of my Physical Atlas), is then wholly lost sight of; the configuration of the river beds can no longer be traced, and the whole appears like one vast lake. But the locality of the fabulous Dorado, and of the Lake Parime, belongs historically to quite a different part of Guiana, namely, that lying south of the Pacaraima mountains. This myth of the White Sea and of the Dorado of the Parime, has arisen, as I endeavoured thirty years ago to show in another work, from the appearance of the micaceous rocks of the Ucucuamo, the name _Rio Parime_ (Rio Branco), the inundations of the tributaries; and especially from the existence of the lake _Amucu_, which is in the neighbourhood of the Rio Rupunuwini (Rupunuri), and is connected by means of the Pirara with the Rio Parime.