n 
CONTEXTS. 
CHAPTER XXII. 
Pag* 
San Fernando de Atabapo— San Balthasar.— The rivers Temi and 
Tuamini. — Javita— Portage from the Tuamim to the &o 
Negro • • ■ * 
329 
CHAPTER XXIII. 
The Rio Negro-Boundaries of Brazil— The Cassiquiare— Bifur- ^ 
cation of the Orinoco 
CHAPTER XXIV. 
The Upper Orinoco, from the Esmeralda to the confluence of the 
Guaviare— Second passage across the Cataracts of At " res a ^ 
Maypures— The Lower Orinoco, between the mouth of the 
Rio Apure, and Angostura the capital of Spanish Guiana 
432 
