EXCURSION TO MAUHES AND ITS NEIGHBORHOOD. 821 



to this. They arc free from one great source of degener 

 ation of type. It is to be hoped that Major Coutinho, who, 

 while making his explorations as an engineer on the Ama 

 zonian rivers, has also made a careful study of the tribes 

 living along their margins, will one day publish the result 

 of his investigations. It is to him we owe the greater 

 part of the information we have collected on this subject. 



14 



