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Show ANNOTATIO:-IS A D ADDITIONS. 199 are oblitcrntcd, and all appears one va t lake. But the fable of the Dorado of the Parimc, and of tho White Sea or Lake of the Parime' belongs historically, as I endeavored to show in another work thirty years ago, to an entirely different part of Guiana, namely, to the country south of the Pacaraima mountains ; and originated in the shining appearance of the micaceous rocks of the Ucucuamo, the name of the Rio Parime (Rio Branco), the overflowings of the tributaries of that river, and especially the existence of the Lake of Amucu, which is in the vicinity of the Rio Rupunuwini or Rupunuri, and is connected through the Pirara with the Rio Parime. I have seen with pleasure that the travels of Sir Robert Schomburgk have fully confirmed these early views. The part of his map which gives the course of the Essequibo and the Rupunuri is entirely new, and of great geographical importance. It places the Pacaraima chain in 3° 52' to 4° north latitude (I had given it 4° to 4° 10'), and makes it reach the confluence of the Essequibo and the Rupunuri, in 3° 57' N. lat. and 60° 23' W. long. from Paris (58° 1' from Greenwich). I had placed this spot half a degree too far to the north. SirRobert Schomburgk calls the last-named river Rupununi, according to the pronunciation of the Macusis; he gives as synonymes of Rupuniri, Rupunuwini and Opununy, the Carib tribes in these districts having much difficulty in articulating the sound of the letter r. The situation of Lake Amucu and its relations to the Mahu (Maou) and Tacutu (Tacoto) are quite in accordance with my map of Columbia in 1825. We agree equally well respecting the latitude of the lake, which I gave 3° 35', and which he finds to be 3° 33'; but the Cafio Pirara (Pirarara), which connects the Lake of Amucu with the Rio Branco, flows from it to the north, instead of to the west, as I had supposed. The Sibarana of my map, of which Hortsmann places the source near a fine mine of rock-crystal, a little to the north of the Cerro Ucucuamo, is the Siparuni of Schomburgk's map. His Waa-Ekuru is the Tavaricuru of the Portuguese geographer Pontes Leme; it is the tributary of the Rupunuri, which approaches nearest to the Lake of Amucu. The following remarks from the narrative of Robert Schomburgk throw some light on the subject before us. " The Lake of Amucu," says this traveller, "is incontestably the nucleus of the Lake of Pa- |