90 Thirty-sixth Report o:n" the State Museum. 



139. Notes upon the Oil Region of Canada West, and its Geographi- 



cal Relations; 7 pages. 1865. 



140. Report upon the Property of the Empire State Iron and Coal 



Company of Georgia [giving some account of the geology of 

 North-western Georgia] ; 24 pages. Albany, 1866. 8vo. 



141. Descriptions of some New Species of Crinoidea and other Fossils 



from the Lower Silurian Strata of the Age of the Hudson River 

 Group and Trenton Limestone ; 17 pages. Printed in advance 

 from the Report of the State Cabinet for 1866. Albany, 1866. 

 8vo. Also published in 24th Report, 1872. 



142. Observations upon some Species of Spirifera; being the conclud- 



ing remarks of the chapter on the descriptions of species of that 

 genus from the Upper Helderberg, Hamilton and Chemung 

 Groups. From the Palaeontology of New York, vol. IV, pp. 

 252-257; unpublished. Proc. Am. Philos. Soc, vol. X, pp. 

 246-254. Philadelphia, 1866. 8vo. 



143. On the Occurrence of an Internal Coluvoluted Plate within the 



Body of Certain Species of Crinoidea. Proc. Boston Soc. Nat. 

 Hist,, 1864, vol. X, pp. 33, 34. Boston, 1866. 8vo. 



144. Notes upon the Geology of some Portions of Minnesota; from 



St. Paul to the Western part of the State. Trans. Am. Philos. 

 Soc, 1866, pp. 329-340 Philadelphia, 1867. 4to. 



145. * On the Structure of the Mountains and Valleys in Tennessee, 



Northern Georgia and Alabama. Proc. Am. Ass. Adv. Sci., 

 15th meeting (Buffalo), 1866, p. 105. Cambridge, 1867. 8vo. 



146. * Remarks on the Geological Structure of Southern Minnesota. 



Ibid., p. 105. 



147. * Observations on the Structure and Mode of Growth of the 



Spines on the Cardinal Area of Chonetes, with Remarks on the 

 Distribution of some Species of the Genus. Ibid., p. 105. 



148. * On the Structure of the Spines in the Genera Athyris, Meris- 



tella, and other Genera of Spiriferidae. Ibid., p. 105. 



149. * On some Characters of Spirifera, and the Geographical and 



Geological distribution of some of the Species. Ibid., p. 106. 



150. Notice of volume IV of the Palaeontology of New York. 



Twentieth Ann. Report N. Y. State Cab. Nat. Hist., pp. 145- 

 167. Albany, 1867 8vo. Also printed separately. ' 



Contributions to Palaeontology. Ibid. 



151. Introduction to the study of the Graptolitidae. Ibid., pp. 169- 



240, 4 plates. 



152. The Genus Chonetes. Ibid., pp. 242-244. 



153. Remarks on the Genera Productus, Strophalosia, Aulosteges and 



Productella. Ibid., pp. 245-250. 



154. On the Genera Spirifera, Cvrtina, and ailied genera. Ibid., pp. 



251-257. 



155. On the Genera Athyris, Merista and Meristella. Ibid., pp. 258- 



266. 



156. Note upon the Genus Zygospira and* its Relations to Atrvpa. 



Ibid., pp. 267-268. 



157. Remarks upon the Genera Rhynchonella and Leiorhynchus. 



Ibid., pp. 269-273. 



158. Note on the Genus Eichwaldia. Ibid., pp. 274-278. 



