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TERTIARY FAUNA OF FLORIDA ^^^ 



fusion of man)' years" standing. A rather full collection was also made in the 

 Darlington district, and more lately Mr. Earle Sloan, State Geologist of South 

 Carolina, has proffered hearty cooperation. 



In Georgia Mr. Burns, under my direction, descended the Altamaha River 

 on a reconnoissance from near Hawkinsville to the sea, and later explorations 

 at Jacksonboro, Screven County, and .Shell Bluff on the Savannah River were 

 undertaken by Mr. Vaughan. 



In northern Florida Dr. T. W. Stanton contributed important data on the 

 extension of the Miocene. Mr. J. Stanley Brown, of the United States Geo- 

 logical Survey, studied the section on the Flint, Chattahoochee, and Chipola 

 Rivers.* Mr. Burns made exhaustive collections at Alum Bluff, Chipola, and 

 Oak Grove. Other important localities were visited by Mr. Vaughan. The 

 field work done by Mr. Willcox, Professor Heilprin, and the writer in various 

 parts of the peninsula of Florida is already of record. 



The Tertiary localities at Gay Head, Martha's Vineyard, and Block Island 

 were visited and studied by the writer,f with the cooperation of Mr. J. B. 

 Woodworth. 



Soon after the work began the interrelations between the Oligocene of 

 Florida and that of the West Indies, especially of St. Domingo and Jamaica, 

 compelled attention. Mr. John B. Henderson, Jr., and Mr. Charles T. Simpson, 

 of the United States National Museum, while on a collecting trip to Jamaica, 

 were able to secure a good supply of marl from the well-known locality at 

 Bowden, which when carefully sorted in Washington afforded nearly four 

 hundred species of fossils most important for our comparisons. 



Some attention was also paid to the equivalent formations on the Paciiic 

 coast, especially the Pliocene of Southern California, the Miocene of Cali- 

 fornia and Oregon, and the Oligocene lignite beds of the Pacific coast, all of 

 which were repeatedly visited by the writer with comparisons in view. 



It will be obvious from the above summary of work done that there was 

 an embarrassment of riches rather than any deficiency of material for study, 

 and it is hardly necessary to state that the descriptive part of this Memoir 

 covers only such portions of this material pertinent to our investigations which 

 was actually in hand at the time the text was written ; as in the case of the 

 Chipola and Oak Grove collections, many of the gastropods came to hand 

 after that portion of the work was in type, and in the lists which follow from 



*Bull. Geol. Soc. Am., v., pp. 140-170, 1894. 

 fAm. Journ. Sci., 3d Ser., xlviii., pp. 296-301, 1894. 



