ACKNOWLEDGMENTS 



Working in a field of this kind, one receives many kind- 

 nesses and much help, and I am very grateful to many for 

 assistance, without which I should have been unable to carry 

 on the survey. 



First, I wish to speak of my great loss in my friend the late 

 Charles W. Johnson, Curator of the Boston Society of Natural 

 History. Rarely does one meet with such a man — the old type 

 of naturalist. Scholarly, and with rare appreciation of the 

 beauties of nature, he was always ready to draw on his fund 

 of scientific knowledge to help others. We joined in publish- 

 ing our first report and had been working together toward 

 amplifying the census of the insects of the Island. My thanks 

 are due to Miss Mary E. Cobb, Librarian of the same Insti- 

 tution, for her interest in sending books of reference ; and I 

 wish here to express my appreciation of the custom of the 

 Trustees of the Boston Society of Natural History in lending 

 books of reference during the summer ; and to draw the atten- 

 tion of others to the great help that their lending of books is 

 to workers who are far from a large reference library. 



To my friend Dr. ^lilton J. Greenman, Director of The Wis- 

 tar Institute of Anatomy and Biology, Philadelphia, for his 

 help and criticism, to say nothing of his assistance in placing 

 The Wistar Institute Press at my disposal, which has made 

 the printing of the reports possible, I am most grateful. I 

 also wish to thank the staff of The Wistar Institute for their 

 interest in getting out the publications. Miss Elizabeth L. 

 Betten, of Newport, Rhode Island, whose gift of books and 

 pamphlets from the library of her uncle, the late Dr. Wolcott 

 Gibbs, has been of great assistance. Mr. Dwight Blaney, 

 whose kindness in furnishing me with type specimens of 

 Mollusca, has saved many hours of work. Dr. A. L, Tread- 

 well for his kindness in identifying many of the marine worms ; 

 Dr. W G. Van Name for his assistance on the Ascidians; 



ZI^^J 



