By Christopher D'Acugna. The second up the river of Plata, and thence by land to the mines of Potosi. By Mons. Acarete. The third from Cayenne into Guiana, in search of the lake of Parima, reputed the richest place in the world. By M. Grillet and Bechamel. Done into English from the originals, being the only accounts of those parts hitherto extant. The whole illustrated with notes and maps