154 



Camaron the coast of Honduras, stretching YV. and N., 

 forms the frontier as far as the mouth of the river Sibuh 

 (lat. 17° 12', long. 90° 40'). Thence, this frontier follows 

 the course of the Sibun to the E,, crosses the Rio Sumasinta, 

 which runs into the Laguna de Terminos, stretches toward 

 the Rio de Tabasco or Grixalva, as far as the mountains that 

 command the Indian town of Chiapa, and turns to the S.W., 

 to rejoin the coasts of the South Sea at la Barra de Tonala. 



Cuba and Portorico. The area for Portorico is calcu- 

 lated from the maps of the Hydrographic Depot at Madrid • 

 for the island of Cuba, from the map, which I constructed 

 in 1820, from my own astronomical observations, and from 

 the whole of the data hitherto published by Messrs. Ferrer, 

 Robredo, Lemaur, Galiano, and Bauza. 



Columbia. The following are the actual limits of the 

 republic of Columbia, according to the information which I 

 obtained on the spot, particularly at the southern and 

 western extremities ; that is at Rio Negro, Quito, and in 

 the province of Jaen de Bracamoros. Northern coast, that 

 of the Caribbean sea, from Punta Careta (lat. 9° 36', long. 

 84° 43 7 ), on the eastern frontier of the province of Costa 

 Rica (belonging to the state of Guatimala), to the rivers 

 Moroco and Pamaroun *, east of Cape Nassau. From this 



* See above, vol. v, p. 753—5. Great uncertainty still pre- 

 vails respecting the situation of this point, the most eastern 

 of the territory of Columbia. A farther reason for the lon- 

 gitudes being ill determined between the mouth of the 

 Oroonoko and English Guyana is, that they have not been 

 connected together by chronometric means. The mouth of 

 the Rio Pomaroun or Poumaron depends on the position 

 both of the Punta Barima and of the Rio Essequebo (Es- 

 quivo). Now, Cape Barima is half a degree too far to the 



