Scale of Miles 



Sketch map of the south-central part of the Amazon drainage system. 



Scale,°l : 12,000,000. 



The party of which the writer was a member descended the Rio Commemo- 

 racao and the Gy-Parand to the Madeira. From here Manaos on the Amazon 

 was reached by the regular steamer route down the Madeira. 



The drainage between the Upper Paraguay and the Madeira is based on 

 the surveys of the Brazilian Telegraph Commission, so far as available. Note 

 the recently explored course of the Rio Ananas (The Geographical Review, Janu- 

 ary, 1916, p. 50, and February, pp. 143-144), and the completed telegraph-line 

 from Cuyaba to Santo Antonio (Bulletin American Geographical Society, Sep- 

 tember, 1915, p. 693). The latter is taken from a map in the Rio de Janeiro 

 newspaper A Noite for October 25, 1915. 



241 



