i6o The American Geologist. March, i89!» 
with remarks upon the Previously known species of Fossils, and De- 
scriptions of some New Ones, from the Sandstone of the Upper Mis- 
sissippi 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 Cryptonella, 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. II — 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. 
Report N. Y. State Cab. Nat. Hist., pp. 50 — 60. Published in ad- 
vance. Albany, 1863. 8vo. 
131. Descriptions of New Species of Fossils from the Carbonifer- 
ous Limestones of Indiana and Illinois. Read in 1856 and published 
separately. Trans. Alb. Inst., vol. IV. 1864. 
132. *On the Genus Eurypterus. Ibid., p. 280. i860. 8vo. 
133- *On the Formation of IMountain 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. 
[Sen. Doc. No. 53.] 
139. Notes upon the Oil Region of Canada West, and its Geo- 
graphical Relations; 7 pages, 1865. 
140. Report upon the Property of the Empire' State Iron and 
Coal Company of Georgia [giving some account of tne geology of 
Northwestern Georgia] ; 24 pages. Albany, 1866. 8vo. 
141. Descriptions of som.e 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 con- 
cluding remarks of the chapter on the descriptions of species of that 
genus from the Upper Helderberg, Hamilton and Chemung Groups. 
From the Paleontology of New York, vol. IV, pp. 252 — 2'^']\ unpub 
lished. Proc. Am. Philos. Soc, vol. X. pp. 246 — 254. h'liiladelpliia. 
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. Z2>' 34- Boston. 1866. 8vo. 
