218 BIOGRAPHICAL INDEX. 



Dald, Wm. H. One of the foremost of American naturalists ; 

 now at the head of the Department of Mollusca in the Smithsonian 

 Institution. 



Deshayes, Gerard P. (Desh.). A French naturalist, whose 

 publications date from 1835 onward. 



Dixon. Capt. Geo. An English sea-captain, who published in 

 1789 an account of his voyage round the world. 



D'Orbigny, (D'Orb.), 1S02-1S57. A French naturalist and writer 

 upon mollusks. 



Donovan, Edward, (Don.). A very voluminous English writer 

 upon insects, shells, etc. He lived in the early part of this cen- 

 tury. 



Draparnaud, Prof. Jaoues, (Drap.), 1772-1806. His writings 

 were chiefly upon the land and fresh-water mollusks of France. 



Duclos, (Duel.). A French naturalist who flourished about 

 fifty years ago. 



Eschschoi/tz, (Esch.). The distinguished naturalist who ac- 

 companied the Russian explorer, Otto von Kotzebue, from 1815- 

 1826. They visited this coast and collected valuable scientific 

 material. 



Forbes, Prof. Edward, (Fbs.). 1S15-1854. An English scholar 

 and writer. With Hanly, he published in 1S53 the " History of 

 British Mollusks." 



Gabb, W. M. A noted American naturalist ; at one time pale- 

 ontologist for the California State Geological Survey. 



Gmeden, Johann F., (Gruel.), 1 744-1 774. A German professor 

 at Tubingen. He edited an Edition of Linne's Sy sterna Natures. 



Gould, Dr. A. A., (Gld.), 1S05-1S66, was a native of New 

 Hampshire, but spent most of his life in Boston, in the practice of 

 his profession. Yet he found time to write much upon Natural 

 History, particularly upon mollusks. His advice to a young natural- 

 ist who had more enthusiasm than riches is full of golden thoughts: 

 "You must go ahead and earn your living, and use your leisure 

 for study, as I have done, only don't wait for the leisure to be 

 greater ; do something, if but little every day ; otherwise, when 

 wealth or age give you greater leisure, your interest will have faded 

 and your opportunity will be gone." 



Gray, John E., 1800-1S75. For nearly fifty years he was con- 

 nected with the British Museum, and finally became its keeper. 

 He wrote valuable catalogues of the same. 



