326 



ward the east, there are in the terrestrial polye- 

 drons, of which the plains are composed, slopes 

 of a second order, inclining to the north-east 

 and to the south-east. An almost imperceptible 

 ridge or line of summits stretches itself, in the 

 latitude of two degrees, from the Andes of Ti- 

 mana toward the isthmus, that separates Javita 

 from Canno Pimichin, and by which we had 

 caused our canoe to be carried. North of this 

 parallel of Timana, the course of the waters* is 

 directed to the north-east, or east ; and forms 

 the tributary streams of the Oroonoko, or the 

 tributaries of these streams. But south of the 

 parallel of Timana, in plains which appear to 

 resemble perfectly those of San Juan, the Ca- 

 queta or Jupura, the Putumayo or Iza, the 

 Napo, the Pastaza, and the Morona, run to the 

 south-east and south-south-east, into the basin 

 of the Amazon. It is even very remarkable, 

 that this ridge of separation is itself but a pro- 

 longation of that, which I found in the Cordil- 

 leras on the road from Popayan to Pasto. In 

 drawing a line of summits through Ceja (a little 

 south of Timana) and the Paramo de las Papas 

 toward TAlto del Roble, between 1° 45' and 

 2° 20' of latitude, at nine hundred and seventy 

 toises of elevation, we find the divortia aquarum 



* The Inirida, the Guaviare, the Vichada, the Zama, the 

 Meta, the Casanare., the Apure. 



