CHAP, xvi RESIDENCE AT TARAPOTO 95 



first expedition to the Campana Mountain and 

 Lirio-pampa, already described at some length. 



In February 1856, he made an excursion to the 

 head of the Puca-yacu, on the western slopes of 

 Mount Guayrapurima. 



In March he went to the Upper gorges of the 

 Shillicaio river. 



In May he went to the top of Cerro Pelado, and 

 to the upper gorges of the Aguashiyacu, Uchulla- 

 yacu, etc. There are a few notes on Mount Pelado, 

 which consists of bare sharp ridges running about 

 S.E. and N.W., the N.E. side being very pre- 

 cipitous but sloping more gradually towards the 

 plain of Tarapoto. The rocks are covered with 

 lichens, a few ferns, some rigid-leaved Liliacea?, and 

 a few dwarf shrubs. From the S.E. the ridges dip 

 abruptly to deep ravines, which form the sources 

 of the streams of the pampa, as well as of some 

 tributaries of the Huallaga. Lower down the 

 slopes are clad with low forest which is densely 

 mossy. The summit of all the ridges is a white, 

 friable, coarse-grained sandstone, in thin layers, 

 inclined at a very high angle. The Cumbasa rises 

 to the north of this group of mountains, and many 

 of the deep ravines above mentioned are some <>t 

 its tributaries. 



(The accompanying beautiful drawing ol 

 mountains north of Tarapoto is the only one of 

 large size which was carefully shaded by Spruce 

 himself. With the one exception of the immediate 

 rough bit of foreground, it has been photograpl 

 from the drawing as he left it fitly years 

 curiously ridged mountain to the right exactl; 

 responds to his description of it above gn 



