ESPERANZA TO CAYO LEVIS A 253 



and a full tank of gasolene, giving us a power radius 

 of about one hundred miles. 



The sierra, from our new view-point, presented 

 an inspiring sight. The great Pan de Guajaibon, 

 with its three peaks, now seemed to be very near 

 and it dominated all other surrounding heights. 

 Through a gap, in the northern series of high ele- 

 vations, we could distinguish a confused mass of 

 mountains. One of the highest of these, far to 

 the south, we decided must be the Sierra de Guira, 

 which rises well above the other mountains in the 

 neighborhood of San Diego de los Banos. La 

 Guira belongs to the southern range of the Or- 

 ganos and is a part of the system that encloses 

 Rangel. It is one of the greater mountains seen 

 from the car windows of the railway to Pinar. 

 Between Guira, to the south, and Guajaibon, to 

 the north, is a rough region of complicated mount- 

 ain structure, imperfectly known to the map- 

 makers, and it is a country of much interest to both 

 biologist and geologist. Having no roads beyond 

 the merest trails and but few habitations, it is not 

 an easy region to explore. 



Our present interest, however, was sharply 

 focused upon Guajaibon. In previous trips to 



