OOLABORATORS OF THE SURVEY. 



t Prof. Joseph Leidy University of Pennsylrania, Fossil Yer- 



tehrata. 



fProf. E. D. Cope Philadelphia, Fa., Paleontologist of the 



Survey, Fossil Vertebrata. 

 t Prof. Leo Lesquereux Columhus, Ohio, Paleontologist of the 



Survey, Fossil Flora. 

 Prof. J. S. Newbery School of Mines, Columbia College, X. 



Y., Fossil Flora. 



tr. B. Meek Washington, B. C, Paleontologist of 



the Survey, Fossil Invertebrata. 

 t Prof. Thomas C.Porter Jjafayette College, Faston, Pa., Recent 



Botany. 



Dr. Elliott Coues. TJ. S. A., Ornithology. 



Dr. A. S. Packard Salem, Mass., Jjepidoptera, &c. 



Samuel H. Scudder Boston, Mass., Orihoptera. 



P. E. Uhler Baltimore, Md., Hemiptera. 



Dr. G. H. Horn Philadelphia, Pa., Coleoptera. 



Dr. H. PlAGEN Cambridge, Mass., NeAiroptera. 



W. H. Edwards Coalburgh, W. Ya., Neuroptera. 



Baron R. Osten Sacken Cambridge, Mass., Biptera. 



E. T. Cresson PJiiladelpliia, Pa., Hymenoptera, 



X Honorary Members of the Survey. 



S. R. GiFFORD 1870 . . .Artist, New Yorh City. 



Thomas Morais^ 1871. . .Artist, Netvarlc, Neio Jersey. 



William Blackmore . . . 1872 . . .Ethnologist, Jjondon, England. 



N. P. Langford 1872 . , . Superintendent Yelloivstone National 



Park, St. Paul, Minnesota. 



W. D. Whitney. . . ., 1873. . .Professor Oriental Banguages, Yale Col- 

 lege, New Haven. 



* Messrs. Batty, Stuckle, Taggart, Luce, Nealy, Holman, Cole, and Noonau, were 

 attached to the survey of the U/iited States while in the field. 



t Messrs Leidy, Cope, Lesquereux, Meek and Porter have rendered most impor- 

 tant services to the survey in the field in their special departments, aud their con- 

 tributions to the annual reports are of great value. 



tThe qualifications for honorary membership of the survey are, viz : that the member 

 shall have previously been eminent in some intellectual pursuit ; shall have been an 

 invited guest of the survey for at least one season ; and during his connection with the 

 expedition in the field, shall have displayed great powers of physical endurance. 



The survey has also received the assistance of specialists in various departments of 

 botany, as Prof. D. C. Eaton; Filices ; Henry Willey, Licheus ; C. H. Peck, Fungi ; S. 

 T. Olney, Cyperacea^ ; Drs. Vasey and Thornton, GraminaceiiJ ; and W. G. Binney, 

 Land-Shells. 



