PREFACE vii 



Howe, A.B., Ph.D. ; the Rev. George A. Hoist ; the Long Island 

 Historical Society of Brooklyn for the use of its fine herbarium, 

 containing the collections of Mr. John Hooper, Mr. A. R. Young, 

 and others, from which most of the illustrations of algae in this 

 book were photographed ; Miss Toedtleberg, Librarian of the Long 

 Island Historical Society ; Miss Ingalls, in charge of the Museum 

 of the Long Island Historical Society; Dr. Theodore Gill; James 



A. Benedict, Ph.D., Assistant Curator of Marine Invertebrates 

 in the Smithsonian Institution ; Miss Mary J. Rathbun, second 

 Assistant Curator of Marine Invertebrates in the Smithsonian 

 Institution ; Miss Harriet Richardson ; and especially to Mr. John 



B. Henderson, Jr. 



Thanks, also, are due to Messrs. Macmillan & Co. for permis- 

 sion to use cuts from the " Cambridge Natural History," Parker 

 and Haswell's "Zoology," and Murray's "Introduction to the 

 Study of Seaweeds" ; to Swan Sonnenschein & Co. for the use of cuts 

 from Sedgwick's " Student's Text-book of Zoology " ; to Wilhelm 

 Engelmann for a cut from " Die natiirlichen Pflanzenfainilien " 

 of Engler and Prantl ; to Little, Brown & Co. for permission to 

 reproduce illustrations from Agassiz's " Contributions to the 

 Natural History of the United States " ; to Henry Holt & Co. for a 

 cut from McMurrich's " Invertebrate Morphology " ; to Houghton, 

 Mifflin & Co. for cuts from the " Riverside Natural History " 

 and Agassiz's " Seaside Studies in Natural History " ; to the Com- 

 monwealth of Massachusetts for the use of illustrations from 

 Verrill's " Report upon the Invertebrate Animals of Vineyard 

 Sound and the Adjacent Waters," Gould's " Invertebrata of 

 Massachusetts" (ed. Binney), and certain fisheries reports; and 

 to the United States government for illustrations taken from 

 Bulletin 37 of the Smithsonian Institution and from reports of the 

 United States Fish Commission. 



