JOURNAL 
OF 
The New York Botanical Garden 
VoL. XVI June, 1915 No. 186 
FURTHER BOTANICAL EXPLORATION OF PORTO 
RICO 
To THE SCIENTIFIC DIRECTORS. 
Gentlemen: In continuation Ob our botanical exploration of 
Porto Rico, as a part of th y of that island under. 
taken by the New York prior of Sciences, in Bor ania 
with the insular government, the American Museum of Natural 
History and other institutions, I left New York on ey 30 
Marc 
ia e r objec 0 
obtain aaqinaral oe of the wild plants of Porto Rico, 
their distribution over the island in relation to soil, altitude and 
rainfall, and t collections of living plants, ee 
and museum specimens. We visited parts of the island which 
we had not previously explored and collected more than 8,0 
1,925 field numbers. Many ae 
of rare or otherwise interesting Lie were obtained for use in 
sas with other gardens and m 
rofessor N. Wille, of the eens oF eee Norway, 
and aa of the Botanical Garden of Christiania, an expert 
* Journ. N. Y. Bot. Gard. 7: 125-139; 15: 95~1 
(Journal for May (16: 85- be was ie June 12, 1915] 
103 
