68 
at Columbia. The land near the bases of parts of these lime- 
where the hardwood vegetation of ened extends up the numer- 
valleys and, in places, where the slopes of foothills ate a 
richer locally arable sol indicated by Heroes trees and shru 
“ 
parts : the northern two thirds of the island not eceupied by 
e : 
most palms in forming clumps, its trunks being connected 
underground so that more or less isolated colonies of from five 
* Journ. Geology, 21: 368. 
