334 



ed recently at the hydrographic depot of Rio 

 Janeiro., confirm the notions that I acquired on 

 the spot. They mark none of the four commu- 

 nications of the Caqueta or Jupura with the 

 Guainia (Rio Negro), the Inirida, the Uaupes 

 (Guapue), and the Put u rn ay o ; they represent 

 each of these tributary streams as an independant 

 river ; they suppress the Rio Patavita, and place 

 the sources of the Guainia only 2° 15' west of 

 the meridian of Javita. The Rio Uaupes, one of 

 the tributary streams of the Guainia, seems to 

 prolong it's course much more to the west than 

 the Guainia itself, and it's direction is such, 

 that, without crossing it, no branch of the Ca- 

 queta could reach the Upper Guainia. I shall 



with respect to the eastern part of Brazil, we recognize the 

 extreme difficulty, which the Portugueze geographers found 

 in combining their ideas of the Lower Jupura, and the Lower 

 Puturaayo, with the Spanish notions of the sources of these 

 rivers. They commit the error, for instance, of naming that 

 part of the Putumayo or Iza, where the Missions of San An- 

 tonio de Amaguajes, Socombios, and San Diego, are situate, 

 the Upper Jupura ; they make the Rio de Mocoa and the 

 Rio Fragua fall into the Apoporis, which is but a tributary 

 stream of the Caqueta and they take from the Rio Iza 

 (Issa or Putumayo) two thirds of it's course. I shall ob- 

 serve on this occasion, that the most recent Portugueze maps, 

 like the most ancient maps of D'Anville and de la Cruz, lay 

 down the Chamusigueni, (Chamequisseen of Arrowsmith, 

 Chamochiqueni of my itinerary map of the Oroonoko), as a 

 tributary stream of the Rio Negro, while the Indians report 

 it to be a tributary stream of the Inirida. (Caulin, p. 75.) 



