Fig. 4. 



E&*» 





Fig. 5. 



Fig. 4 — Large ground moss — so-called i/areta — used for fuel. It occurs in the zone 

 of Alpine vegetation and is best developed in regions where the snowline is highest. 

 The photograph represents a typical occurrence between Cotahuasi and Salamanca, 

 elevation 16,000 feet (4,880 m.). The snowline is here at 17,500 feet (5,333 m.). In 

 the foreground is the most widely distributed tola bush, also used for fuel. 



Fig. 5 — Expedition's camp near Lambrama, 15,500 feet (4,720 m.), after a snow- 

 storm. The location is midway in the pasture zone. 



