340 THROUGH THE BRAZILIAN WILDERNESS 



parallels of latitude south and the 59th and 60th degrees 

 of longitude west from Greenwich. We embarked on it 

 at about latitude 12° i' south, and about longitude 60° 

 15' west. After that its entire course lay between the 

 60th and 6 1st degrees of longitude, approaching the latter 

 most closely about latitude 8° 15'. The first rapids we 

 encountered were in latitude 11° 44', and in uninterrupted 

 succession they continued for about a degree, without a 

 day's complete journey between any two of them. At 1 1° 

 23' the Rio Kermit entered, from the left, at 11° 22' the 

 Rio Marciano Avila from the right, at 11° 18' the Taunay 

 from the left, at 10° 58' the Cardozo from the right. In 

 10° 24' we encountered the first rubber-men. The Rio 

 Branco entered from the left at 9° 38'. Our camp at 8° 49' 

 was nearly on the boundary between Matto Grosso and 

 Amazonas. The confluence with the Aripuanan, which 

 joined from the right, took place at 7° 34'. The entrance 

 into the Madeira was at about 5° 20' (this point we did 

 not determine by observation, as it is already on the maps). 

 The stream we had followed down was from the river's 

 highest sources; we had followed its longest course. 



