PREFACE vil 
Howe, A.B., Ph.D.; the Rev. George A. Holst; 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 alge 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 “Zodlogy,” 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 Zodlogy”; to Wilhelm 
Engelmann for a cut from “Die natiirlichen Pflanzenfamilien” 
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 
eut from MeMurrich’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. 
