20 



the Artesian Well of Charleston, which is remarkably full of scien- 

 tific knowledge, especial pains having been taken to notice everything 

 that came up and from what depth. In 1883 and 1884 the "Agri- 

 cultural Reports'' of the State were made by Major Harry Ham- 

 mond ; they are of not much worth geologically, being almost 

 altogether agricultural. In 1888 "Three Formations of the Atlantic 

 Slope," by \Y. J. McGee, was published in the American Journal of 

 Science. This treatise does not deal directly with these formations 

 in South Carolina. In 1890 McGee, in his "Appomattox Forma- 

 tion," touched slightly on what he considered the continuation of 

 this formation into the State. In 1891, in his "Lafayette Formation," 

 he gave several pages to South Carolina. In the same year J. A. 

 Holmes, whose knowledge of the geology of the State is extensive, 

 gave an account of the mineralogical, geological and agricultural 

 surveys of the State in the Elisha Mitchell Science Society Journal. 

 In 1892, in the second part of the third volume of the Transactions 

 of the Wagner Free Institute of Science, Dr. Dall discusses the 

 marine Pliocene beds of the Carolinas, telling of the work of C. W. 

 Johnson on the Waccamaw, and giving a list of Pliocene fossils from 

 the Waccamaw beds. In the same year Dr. Dall, with the help of 

 G. D. Harris, prepared an extensive description of the Neocene of 

 North America, Bulletin No. 84 of the United States Geological 

 Survey ; in this the South Carolina formations are treated with some 

 degree of fullness. In 1896 N. H. Darton, in "Artesian Well Pros- 

 pects in the Atlantic Coastal Plain," Bulletin No. 138, U. S. G. S., 

 and in "Notes on Relations of the Coastal Plain Region in South 

 Carolina," Bulletin, Geological Society of America, gave what is 

 still believed, in the main, to be the true order of beds in the parts 

 of the State that he investigated. In 1905 L. C. Glenn, in "Under- 

 ground Waters of the United States — South Carolina," Water Sup- 

 ply and Irrigation Paper No. 114, U. S. G. S., gives a few pages to 

 the discussion of the succession and extent of the Coastal Plain series 

 of the State. 



II. GEOGRAPHICAL DISTRIBUTION OF THE PLEIS- 

 TOCENE OF THE COASTAL PLAIN. 



The Pleistocene formation of the Atlantic coast is generally de- 

 scribed as extending from the terminal moraine in north-central New 

 Jersey through Maryland and Virginia and the South Atlantic and 

 Gulf States on to the Mexican border line and beyond. It every- 

 where unconformably overlies the earlier formations and in places 



