1()7 



Authors record the thickness and character of strata through which the well 



passed. 



Daviess county, Geology of. E. Owen's Rep. 1859-60, do Cox, E, T., 



1872, do 1870, do 1875. J. Collett'a Rep. 1883. (Coal, see Lesquereux). 



Dearborn county, Geology of. R. Owen's Rep. 1859-60. E. T. Cox's 



Rep. 1872. Flora of. M. Thompson's Rep. 1888. Gas. (See Phinney, 



Natural Gas in Indiana.) 

 Decatur county, Geology of. R. Owen's Rep. 1859-60, do J. Collett's 



Rep. 1882. Gas and oil. (See A. J. Phinney, Natural Gas in Ind.) 

 DeKalb county, Geology of. R. Owen's Rep. 1859-60, do E. T. Cox's 



Rep. 1873, M. Thompson's Rep. 1888. Gas and oil. (See A. J. Phin- 

 ney, Natural Gas in Indiana.) 

 Delaware county. Geology of. J. Collett's Rep. 1881 ; M. Thompson's 



Rep. 1885-86. Gas. (See Phinney, Natural Gas in Indiana.) 

 Dennis, D. W. Analytical key to the fossils of Richmond, Ind., 1889. 



pp. 1-48. 

 Devonian. Fossils of Jefferson county. Whitfield. Cornett, 1874. 

 Deverneuil, M. ]\Iemoir on the parallelism of American and European 



formations. 



Mentions the black slate of Indiana, Kentucky and Tennessee. He considers it the 

 eciuivalent of the " GenSsee " of the New York series. (See also Bull. Geol. Soc. 

 France vol. IV, 2d series.) 

 Dryer, C. R. Geology of Dekalb county. M. Thompson's Rep. 1888, 



pp. 98-101. 



Describes surface features, extent and nature of glacial drift, moraines, lakes, etc., 

 sections as exhibited by borings. 

 Geology of Allen county. M. Thompson's Rep. 18S8, pp. 105- 



129. 



Describes the topographical features and charactor of the drift which covers the 

 entire county ; well section at Fort Wayne. 

 Geol. Report of Steuben county. S. S. Gorby (17th annual 



Rep.) 1891. 



Describes the physical features of the moranic deposits, associated lakes and drainage. 

 History of the ITpperMaumee Valley, Chicago, 1888. Map of the 



drift of Northeast Indiana, 1893. 

 Dubois county. Geology of. R. Owen's Rep. 1859-60. E. T. Cox, 1872, 



do 1870. 

 Coal. See Collett's Rep. 1883, do Lesquereux. 



