96 
It is very interesting heel eran several species of plants aa 
found ‘there which are not known to inhabit the mainland o: 
Porto Rico. a ieee is bright white and a very pure 
Delightful oe and opportunity to study hills in the 
vicinity of Arecibo and Barceloneta geologically = siege viees 
u ibo. 
ne 
saa ae n _and Manati and to several places 
this in one of the hills near Martin ied where the sand was 
seen in layers between those of limeston 
We gave especial attention to studies of Sas oe in 
o make our records of exotics The 
oleten of the Agricultural Pape uent Stations a is Mayague 
and at Rio’ Piedras and those of th 
w. The plants in the Governor’s Garden and of the Porto 
Rice Nursery Company at Rio Piedras, and those in the plazas 
of several cities, and in the gardens a several hotels were ob- 
d had tudyi i 
served, an 
private see among them that of Mr. and Mrs. F. T. Maxwell 
at Ensenada where a truly wonderful result has been reached 
in the transformation of a dry rocky hill on the harbor of Guanica 
i a luxuriai nd elegant garden, primarily by the planting 
of 'y cocoanut palms several years ago, which soon sale 
under irrigation the requisite shade for the present 
1 AtN b were guests of Mr. Harold I. Sewell 
now, a ious occasion when we explored the Nagua- 
tains,’ facilitated our work by kind hospitality and 
lued inform His use of the Porto Rico Royal Pal 
(Roystonea borinquena) planted in a semicircle fronting 2 
te 
residence is original and elegant, and his success in grow! 
mangosteens (Gercinia sp.) is. an important a rns 
1Journ, N. Y. Bot. Gard. 23: 56. 1922. 
* Journ, N. Y, Bot. Gard. 15: 102. 1914. 
