The first points to examine are those which are situated to the southward and eastward of Panama, and which are immediately connected with, and contiguous to, the Gulf of Darien. These are as follow:--In the province of Choco, famous for its gold mines, there is a ravine called Rapsadura, extending between a head branch of the River St. Juan, which, after a course from N. E. by N. to S. W. by S., falls into the Pacific in lat. 4 deg.5' N.; and the river of Quito, one of the head branches of the River Atrato, which flows in nearly a due north course into the Gulf of Darien. Through the ravine just mentioned, the parish priest of Novita dug a small canal in 1778, which was navigable during the rainy season, and by which canoes, laden with coffee and other produce, passed from one sea to another, a distance of 250 miles; as they found it requisite and convenient. The next point, and more to the north beyond Cape St. Francisco de Solano, in about 7 deg.30' N. lat. is, from the mouth of the Cupica, or Tupica, as it is denominated in some maps, along that stream, which descends from the eastward into the Pacific, through a break in the mountains to the head of the river Naipi, a distance of from 15 to 20 miles only. The latter river is deep and navigable, and flows through a lake of considerable magnitude, nearly due east, into the River Atrato, a little below the village of Zitara, about 60 miles from the mouth of the latter stream, in the Gulf of Darien. The distance from the Pacific to the Atrato, through the channels mentioned, is only 60 geographical miles. The Atrato springs (its farthest branch the Rio Chame) in the rising ground, in 5 deg.40' N. lat. and 75 deg. 15' W. long., and runs almost due north, a distance of 200 miles, into the Gulf of Darien. At this point, the western and secondary chain of the (p. 088) Andes is broken and interrupted, and there is good reason to believe that they continue to be so in several places more to the northward: in fact, that they cease, and are succeeded through all the Isthmus of Darien and Panama, by a low range, broken into fragments in different places. At the point under consideration, namely, by the Cupica and the Naipi, the Spanish Government had it in contemplation, about forty years ago, to open a communication from sea to sea, by means of a canal; but the events in Europe, and the decay of their power, prevented the important enterprise from being undertaken. The Gulf of Darien, and the course of the Atrato, were rigidly guarded and concealed by the Spanish Government, so much so, that by special decrees the punishment of death was denounced against every one who should either permit or attempt the exploration of the country in these parts. This showed clearly that their practical knowledge gave them to know, that a communication between the Atlantic and the Pacific was easy and practicable in more places than one in this quarter of their dominions.