SUMMARY OF THE TRIP 325 



of the lower Amazon valley, and in consequence I know 

 of no better local zoological gardens. She has an in- 

 valuable collection of birds and mammals of the region ; 

 and it was a privilege to meet her and talk with her. 



We also met Professor Farabee, of the University of 

 Pennsylvania, the ethnologist. He had just finished a 

 very difficult and important trip, from Manaos by the 

 Rio Branco to the highlands of Guiana, across them on 

 foot, and down to the seacoast of British Guiana. He 

 is an admirable representative of the men who are now 

 opening South America to scientific knowledge. 



On May 7 we bade good-bye to our kind Brazihan 

 friends and sailed northward for Barbados and New York. 



Zoologically the trip had been a thorough success. 

 Cherrie and Miller had collected over twenty- five 

 hundred birds, about five hundred mammals, and a few 

 reptiles, batrachians, and fishes. Many of them were 

 new to science ; for much of the region traversed had 

 never previously been worked by any scientific collector. 



Of course, the most important work we did was the 

 geographic work, the exploration of the unknown river, 

 undertaken at the suggestion of the Brazilian Govern- 

 ment, and in conjunction with its representatives. No 

 piece of work of this kind is ever achieved save as it 

 is based on long-continued previous work. As I have 

 before said, what we did was to put the cap on the 

 pyramid that had been built by Colonel Rondon and his 

 associates of the Telegraphic Commission during the six 

 previous years. It was their scientific exploration of 

 the chapadao, their mapping the basin of the Juruena, 

 and their descent of the Gy-Parand that rei^dered it 

 possible for us to solve the mystery of the River of 

 Doubt. On the map facing p. 1 I have given the 



