The sources of the tributary streams of the Carony, the Arui, and the Caura (Caroli, Arvi, and Caora,* of the ancient geographers (* D'Anville names the Rio Caura, Coari; and the Rio Arui, Aroay. I have not been able hitherto to guess what is meant by the Aloica (Atoca, Atoica of Raleigh), which issues from the lake Cassipa, between the Caura and the Arui.)) being very near each other, this suggested the idea of making all these rivers take their rise from the pretended lake Cassipa.* (* Raleigh makes only the Carony and the Arui issue from it (Hondius, Nieuwe Caerte van het wonderbare landt Guiana, besocht door Sir Walter Raleigh, 1594 to 1596): but in later maps, for instance that of Sanson, the Rio Caura issues also from Lake Cassipa.) Sanson has so much enlarged this lake, that he gives it forty-two leagues in length, and fifteen in breadth. The ancient geographers placed opposite to each other, with very little hesitation, the tributary streams of the two banks of a river; and they place the mouth of the Carony, and lake Cassipa, which communicates by the Carony with the Orinoco, sometimes* ABOVE the confluence of the Meta. (* Sanson, Map for the Voyage of Acunha, 1680. Id. South America, 1659. Coronelli, Indes occidentales, 1689.) Thus it is carried back by Hondius as far as the latitudes of 2 and 3 degrees, giving it the form of a rectangle, the longest sides of which run from north to south. This circumstance is worthy of remark, because, in assigning gradually a more southern latitude to lake Cassipa, it has been detached from the Carony and the Arui, and has taken the name of Parima. To follow this metamorphosis in its progressive development, we must compare the maps which have appeared since the voyage of Raleigh till now. La Cruz, who has been copied by all the modern geographers, has preserved the oblong form of the lake Cassipa for his lake Parima, although this form is entirely different from that of the ancient lake Parima, or Rupunuwini, of which the great axis was directed from east to west. The ancient lake (that of Hondius, Sanson, and Coronelli) was also surrounded by mountains, and gave birth to no river; while the lake Parima of La Cruz and the modern geographers communicates with the Upper Orinoco, as the Cassipa with the Lower Orinoco.