360 NEW YORK STATE MUSEiUM 



Devonian. Clarke, The Hercynian Question. Geol. rep. 8 (for 1888) 1889. 



p.62-91. Same, Mus. rep. 42 (for 1888) 1889. p.408-37. 

 Clarke. Devonic Age of the Helderbergian Fauna and the Base of the 



Devouic System in New York. Mus. mem. 3. 1900. p.82-9S. Same, 



Mus. rep. 53 (for 1899) 1901. 2:82-98. 

 Clarke. Value of Amnigenia as an Indicator of Freshwater Deposits 



during the Devonic of New York, Ireland and the Rhineland. Mus. 



bul. 49. 1901. p. 199-203. pl.ll. 

 Clarke. Indigene and Alien Faunas of the New York Devonic. Mus. 



bul. 52. 1902. p.e64-72. 

 Clarke & Schuchert. Devonic. See New York series. 

 Conrad. Old Red Sandstone or Devonian System. Pal. rep. (for 1840) 



1841. p.41-42. 

 Emmons. The Upper Rocks of New York Equivalent to the Devonian 



System of England and the Continent. Ag. N. Y. 1846. 1:198-99. 

 Hall. Line of Demarcation between Silurian and Devonian. Pal. N. Y. 



1859. 8:42. 



Hall. Flora of the Devonian Period. Mus. rep. 16 (for 1862) 1863. 



p.92-117. illus. 4pl. 

 Hall & Whitfield. Descriptions of New Species of Fossils from the De- 

 vonian Rocks of Iowa. Mus. rep. 23 (for 1869) 1873. p.223-39. pl.9-12. 

 Hall «&; Whitfield. Notice of Three New Species of Fossil Shells from 



the Devonian of Ohio. Mus. rep. 23 (for 1869) 1873. p.240-41. 

 Hall. Illustrations of Devonian Fossils. 1876. 

 Merrill. Devonian System. Mus. bul. 19. 1898. p. 158-65. Same, Mus. rep. 



51 (for 1897) 1899. 1:158-65. 

 Merrill. Life of the Devonian. Mus. bul. 19. 1898. p.l65. Sams, Mus. 



rep. 51 (for 1897) 1899. 1:165. 

 Prosser. The Devonian Section of Central New York along the Unadilla 

 River. Geol. rep. 12 (for 1892) 1893. p.110-42. Same, Mus. rep. 46 (for 

 1892) 1893. p.256-88. 

 See also New York series; Old red sandstone; also names of subdivis- 

 ions; also names of classes of fossils, i. e. Brachiopoda, Corals, Crus- 

 tacea, etc. 

 Devonian shales, see Shales. 



Devonic. Clarke & Schuchert. Devonic. See New York series. 

 Diabase, see Trap. 



Diamond. Whitlock. Diamond. Mus. bul. 58. 1902. p.47. 

 Diatomaceous eartli, see Infusorial earth. 

 Dlctyospong'idae, see Spongiae. 



Dikes. Gushing. Dike Rocks of Clinton County. Geol. rep. 15 (for 1895) 

 1897. p.515-73. Same, Mus. rep. 49 (for 1895) 1898. 2:515-73. 

 Geol. rep. 19 (for 1899) 1900. p.r61. Same, Mus. rep. 53 (for 



1899) 1901. I:r61. 



Gushing. Pre-Oambrian Dikes of Adirondacks. Geol. rep. 16 (for 1896) 

 1899. p.12-13. Sa^ne, Mus. rep. 50 (for 1896) 1899. 2:12-13. 



Cushing. Dikes of Franklin County. Geol. rep. 18 (for 1898) 1899. p.ll7- 

 22. Same, Mus. rep. 52 (for 1898) 1900. 2:117-22. 



Geol. rep. 20 (for 1900) 1902. p.r23-82. Same, Mus. rep. 54 (for 



1900) 1902. l:r23-82 (various page references), 



Cushing. Diabase Dikes at Little Falls. Geol. rep. 20 (for 1900) 1902. 



p.r93. Same, Mus. rep. 54 (for 1900) 1902. I:r93. 

 Emmons. Phenomena of Dykes. Geol. rep. 2d dist. (for 1837) 1838. 



p.225-26. 

 Emmons. Direction of Dykes, Veins, etc. Geol. rep. 2d dist. (for 1838) 



1839. p.238. 



