88 



Forty-second Annual Report on the 



126. Preliminary Notice of the Fauna of the Potsdam Sandstone; 



with remarks upon the Previously known species of Fossils, 

 and Descriptions of Some New Ones, from the Sandstone of 

 the Upper Mississippi Valley. Ibid., pp. 119-209, 6 plates. 



127. Supplementary Note on the Potsdam Sandstone. Ibid., pp. 210- 



222. 



128. Notes and Corrections. Ibid., pp. 223-226. 



129. Observations upon some of the Brachiopoda, with reference to 



the Genera Cryptonelia, Centronella, Meristella, and allied 

 forms. Trans. Albany Institute, vol. IV, pp. 125-147 [1863]. 

 Albany, 1864. 8vo. Also published in Am. Jour. Sci., 2d Ser., 

 vol. 35, pp. 396-406; vol. 36, pp. 11-15. New Haven, 1863. 8vo. 



130. Preliminary Notice of some Species of Crinoidea from the Waverly 



Sandstone Series, of Summit county, Ohio, supposed to be of 

 the age of the Chemung Group of New York. Seventeenth 

 Ann. Keport N. Y. State Cab. Nat. Hist., pp. 50-60. Published 

 in advance. Albany, 1863. 8vo. 



131. Descriptions of New Species of Fossils from the Carboniferous 



Limestones of Indiana and Illinois. Read in 1856 and pub- 

 lished separately. Trans. Alb. Inst., vol. IV. 1864. 



132. * On the Genus Eurypterus. Ibid., p. 280. 1860. 8vo. 



133. *On the Formation of Mountain Chains. Ibid., pp. 284-285. 



134. *On the Geology of Wisconsin. Ibid., pp. 288, 295. 1864. 



135. * Remarks on Oil Springs. Ibid., p. 303. 



136. * Remarks on the Taconic System. Ibid., pp. 289, 292, 293. 



137. *On the Niagara Group. Ibid., p. 301. 



138. Notice of some New Species of Fossils from a locality of the 



Niagara Group in Indiana; with a List of Identified Species 

 from the Same Place. Ibid., pp. 195-228 [1862]. Albany, 

 1864. 8vo. 



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 

 Northwestern 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 the 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 



