CuAP. XII. GEOGRAPHICAL FEATURES. 213 



coca and coffee plantations. The curve here made by the 

 river is so considerable that the people from Sandia reach 

 their farms in the Yalle Grande by leaving the ravine 

 above Ypara, and making their way across the grass-covered 

 mountains. The coffee-plants in these farms receive no 

 attention whatever from the time they are planted, so that, 

 instead of the dense well-pruned bushes of India or Ceylon, 

 they gi'ow into tall straggling trees about twelve feet high, 

 with a very small harvest of berries on each, but each 

 berry well exposed to the smi. The coffee is certainly ex- 

 cellent. 



Passing through the Valle Grande the river flows on past 

 Versailles, where it receives the golden Challuma, and, 

 uniting \\ ith all the other rivers of Caravaya, becomes that 

 great Yuambari which finally effects a junction with the 

 Madi'e de Dios, and forms the main stream of the mighty 

 Purus. 



The river Huari-huari, which is formed by two streams 

 flowing fi-om the villages of Sina and Quiaca, joins the river 

 of Sandia about thirty miles below that town, and their 

 united streams compose the Ynambari. Finally the river 

 Tambopata rises near a farm called Saqui, just within the 

 boundary between Peru and Bolivia, at the foot of a ridge 

 of the Eastern Cordillera. After a course of forty miles it 

 receives the river of San Bias, on the banks of which the 

 people of the Sina village have their coca-plantations. Eighty 

 miles lower down the Tambojjata unites with the river Pablo- 

 bamba, on its right bank, at a place called Putina-puncu. 

 The Pablo-bamba rises in a hill called Corpa-ychu on the 

 very frontier of Bolivia, and is only divided from the Tambo- 

 pata, during its whole course, by a single range of hills. The 

 frontier between the two republics has never been surveyed. 

 Below Putina-puncu the united waters of tlie two rivers enter 

 the vast forest-covered plains into which the spurs of the 



