JOURNAL 

 The New York Botanical Garden 



'o the Scientific Directors. 



Gentlemen : The Board of Managers having on January 9, 

 906, authorized the continuation of botanical exploration in 

 'orto Rico, and having granted me leave of absence from the 

 iarden for the purpose of directing it, I organized an expedition 

 rhich left New York February 24 and returned April 1. The 

 bjects were to increase our collections of Porto Rican species, 

 nd to obtain a better knowledge of them by observing the plants 

 rowing in their natural habitats, and also to visit certain parts 

 f the colony hitherto unexplored by botanists. 



We were fortunate in securing the cooperation of Mr. John F. 

 iowell, Director of the Buffalo Botanical Garden, who gave 



ther living plants; Dr. Marshall A. Howe, of our curatorial 

 tafT, continued his collecting of West Indian marine algae and 

 ther cryptogamic plants ; Mrs. Britton, assisted by Miss Delia 

 V. Marble, paid especial attention to the mosses, lichens, fungi, 

 nd ferns, and also aided in the preparation of the general eol- 

 ations ; and we were all favored by the company of Professor 

 V. M. Wheeler, curator of invertebrate zoology in the American 

 luseum of Natural History, who made a critical study of the 



le relationships and habits of these fascinating little animals, 



lany of the sixty species obtained by him living in hollow 



125 



