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Desert, a region strongly suggestive of Sonora, Mexico, with 
an almost equal abundance of treelike cacti; and beyond the 
desert are hills, arid at first, but ee higher and more 
itated in every way by the thoughtful kindness of Don Benjamin 
Arrieta Rossi, the Director, and by Dr. Salvador Calderén and 
Dr. Carlos Renson, who not only made arrangements for 
work in various parts of the Republic but anticipated all m 
special needs and wishes. I have never had the opportunity 
t first, collections were made abou t San Salvador, an in- 
Ithough much sug rn, rice, and other cr e 
cultivated, the most important agricultural product is coffee, 
im 
the natural vegetation. Salvador is the most densely populated 
country of the western hemisphere, excepting perhaps Haiti, 
and ibe is little unimproved land in the central and western 
portion: 
Near oh Capital stands the great Volcano of San Salvador, 
and the 
whose ption accompanying earthquake destroyed 
the city in, 1917 (a second earthquake again ruined it in 1919), 
and on the slopes are to found many interesting plants 
High up, about the enormous crater, grow numerous mountain 
species which have been described from the similar mountains 
of Guatemala 
