16 BULLETIN 326, U. S. DEPARTMENT OF AGRICULTURE. 



ACKNOWLEDGMENTS. 



To Mr. J. T. Crawley, who during the period when I was in Porto 

 Rico was director of the sugar experiment station at Rio Piedras, 

 and who originated the present movement for bird protection and 

 conservation in the island, I am deeply indebted for information and 

 aid. Mr. D. L. Van Dine, at that time entomologist under Mr. 

 Crawley, gave me material assistance in many ways, and the other 

 members of the staff at the sugar experiment station were equally 

 obliging. Mr. W. V. Tower, director of the Insular Experiment 

 Station, who was then entomologist for the board of commissioners 

 of agriculture, allowed me the use of his office as headquarters 

 and rendered every assistance in his power. He was seconded dur- 

 ing the latter part of my stay by his assistant, Mr. S. S. Crossman. 

 Without Mr. Tower's aid the work would have been greatly handi- 

 capped and undoubtedly much prolonged. Mr. George Shanton, 

 chief of police of Porto Rico, gave me a general letter to the men 

 under him, which obviated many annoyances and inconveniences, 

 and without which field work would have been impossible. 



I am indebted to Sefior Jose J. Monclova y Cagigal, of Rio 

 Piedras, for valuable information concerning the birds of the island, 

 and to Sefior Rosendo Matienzo, who rendered me much assistance 

 at Mameyes. Senores Miguel Mir and Ramon Alonzo, owners of 

 the celebrated Hacienda Catalina, above Mameyes, offered me every 

 hospitality while I was in the forest region on El Yunque. Every 

 kindness was shown me at the experiment station at Mayagiiez, and 

 to many friends on the island I am indebted for aid cheerfully given 

 whenever it was required. 



In working up the collection of skins made during the field work, 

 Dr. C. W. Richmond, acting curator of birds of the United States 

 National Museum, rendered all possible assistance and placed at my 

 disposal his personal notes made in Porto Rico; while Mr. J. H. 

 Riley, of the division of birds, gave me a large number of titles bear- 

 ing on Porto Rican ornithology and assisted in other ways. 



