328 PROCEEDINGS OF THE NATIONAL IVIUSEUM vol.90 



1930. Eocene (Bridger), Wyoming, Bridger Basin, C. W. Gilmore in charge, 



assisted by G. F. Sternberg and George B. Pearce. 

 Pliocene (Hagerraan Lake beds), Idaho, "Plesippus Quarry," near Hager- 



man, J. W. Gidley In charge, assisted by C. F. Singleton, S. P. Welles, 



Elmer Cook, Frank Gamier, and Y. Young Rogers. 

 Pleistocene, Florida, Melbourne, evidence of association of man with 



Pleistocene fossils, J. W. Gidley in charge, assisted by C. P. Singleton. 



1931. Eocene, Miocene, and Oligocene, Wyoming and Montana. Collections made 



from Eocene : Wasatch, Big Horn Basin ; Oligocene : Pipestone Springs : 

 Miocene : Canyon Ferry, White Sulphur Springs, and Deep River. C. W. 

 Gilmore in charge, assisted by G. F. Sternberg and M. V. Walker. 

 Pliocene (Hagerman Lake beds), Idaho, "Plesippus Quarry," near Hager- 

 man, N. H. Boss in charge, assisted by C. P. Singleton, C. W. Caldwell, 

 Charles Brenner. 



1932. Oligocene (Brule), Wyoming, Nebraska, and South Dakota, C. W. Gilmore 



in charge, assisted by G. F. Sternberg and M. V. Walker. 



1934. Pliocene (Hagerman Lake beds) and Pleistocene, Idaho, "Plesippu.r' 



Quarry and American Falls, C. Lewis Gazin in charge, assisted by G. F. 

 Sternberg, George B. Pearce, and Elmer Cook. 

 Paleoceue (Fort Union), Montana, Sweetgrass County, George Gaylord 

 Simpson in charge, assisted by A. C. Silberling. 



1935. Upper Cretaceous (Two Medicine), Montana, Blackfeet Indian Reserva- 



tion, and Eocene (Wasatch), Wyoming, Big Horn Basin, C. W. Gilmore 

 in charge, assisted by G. F. Sternberg and George B. Pearce. 



1936. Eocene (Wasatch), Paleocene (Puerco and Torrejon), and Pliocene, New 



Mexico and Arizona, C. Lewis Gazin in charge, assisted by G. F. Stern- 

 berg and H. R. Shepherd. 



1937. Upper Cretaceous (North Horn), Paleocene (Dragon), and Trlassic 



(Chinle), Utah, Emery County, and Arizona, vicinity of Petrified Forest. 

 C. W. Gilmore in charge, assisted by G. F. Sternberg and G. B. Pearce. 



1938. Upper Cretaceous (North Horn), Paleocene (Dragon), and Eocene (Uinta), 



Utah, Emery County, and Uinta Basin, C. Lewis Gazin in charge, assisted 

 by G. F. Sternberg and H. R. Shepherd. 



1939. Upper Cretaceous (North Horn) and Paleocene (Dragon), Utah, Emery 



County, C. Lewis Gazin in charge, assisted by G. F. Sternberg and 

 Franklin Pearce. 



1940. tipper Cretaceous (North Horn), Paleocene (Dragon), Utah, Emery County, 



and Eocene (Bridger), Wyoming, Uinta County, C. Lewis Gazin in charge, 

 assisted by G. F. Sternberg and Franklin Pearce. 



CHRONOLOGICAL LIST OF COLLECTING TRIPS FOR FOSSIL VERTEBRATES IN THE 

 MIOCENE ALONG CHESAPEAKE BAY AND OTHER LOCALITIES NEAR WASHING- 

 TON, D. C. 



COLLECTING WAS CARRIED ON BY A CONSIDERABLE NUMBER OF INDIVIDUALS, WORKING FROM 1 TO 13 

 DAYS AT A TRIP. THE RECORD OF EARLY COLLECTING IS INCOMPLETE 



1905-1914. Calvert Cliffs, Md. ; F. W. True, collector. 



1908: July 3, 7, 11, 18; August 1, 4, 12, 26; September 7. Plumpoint, Md. ; 



William Palmer, D. B. Mackie, N. H. Boss, James W. Gidley, and Marcus 



W. Lyon, Jr. 

 1912 : May 31. Plumpoint, Md. ; William Palmer, A. C. W^eed, and S. M. Gron- 



berger. 

 1913 : October. Dares Wharf and Plumpoint, Md. ; William Palmer. 



