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Lake Guanica, where we had previously ceeeee with the 
especial object of enabling Professor Wille to study its water 
nts. The trip was under the guidance o r. Morse, of 
Guanica, and we gratefully appreciate his courtesy. One of 
studied, an e plants of the endemic Porto Rican cycad, 
mia portoricensis, were collected, as well as a few other unusual 
species. 
On March a trip was made to the coastal marshes and 
plains ee te and Santa Isabel, where several interesting 
grasses were obtain nd further studies made of cacti an 
ave e of the villages along the road lies right amon 
and a nearly barren saline plain behind it, a quite extraordinary 
settlement. In the afternoon we moved our base to Coamo 
Springs, and gave the ue following days to studies of Monte 
weathered into several peaks with connecting ridges, somewhat 
suggestive of the remnant of an ancient volcano. Primeval 
forest, aggregating perhaps 200 acres, recently much reduced 
pa y the 
strong mountain grass Isachne. An extended and instructive 
view of Porto Rico is had from this elevation, and the deforested 
character of the country is painfully evident. During the ascent 
the mountain, Mrs. Britton made collections of cryptogams 
along the small stream at its base. After work in preserving 
