receiving the waters of the superior stream* 

 sends on the contrary a part of it's own waters 

 to that stream, in a direction opposite to that of 

 the principal recipient. I have collected on one 

 plate of my Atlas several examples of these ra- 

 mifications with counter-currents, these appa- 

 rent movements against the general slope, these 

 bifurcations of rivers, the knowledge of which 

 is interesting to hydrographic engineers. This 

 plate will remind them, that they must not 

 consider as chimerical all that deviates from the 

 type, which we have formed for ourselves from 

 observations collected in too limited a part of 

 the Globe. 



The Cababuri runs into the Rio Negro near 

 the mission of Nossa Senhora das Caldas ; but 

 the rivers Ya and Dimity*, which are higher 

 tributary streams, have communications also 

 with the Cababuri ; so that, from the little fort 

 of San Gabriel de Cachoeiras-}- as far as San 

 Antonia de Castanheira, the Indians of the Por- 

 tuguese possessions can enter the territory of 

 the Spanish missions by the Bariaand the Paci- 

 moni. If I employ the word territory, it is ac- 

 cording to the practice of the monks of the Ob- 



* Bimitti, or Cuniraiti. 

 + There is an uninterrupted succession of small cataracts 

 from San Gabriel as far as San Bernardo. The most consi- 

 derable is near the first of these places, and is called Cacho- 

 eira de Crocobi or Corocuvi. 



