Published Works of James Hall. 93 



196. * On the occurrence of Trunks of Psaronius in an erect position, 



resting on their original bed, in Rocks of Devonian Age in the 

 State of New York ; with some Inferences regarding the Con- 

 dition of the Sea-Bottom and Shore-line during the Depo- 

 sition of the Strata. Report of the British Association for the 

 Advancement of Science, 42d meeting (Brighton), 1872, p. 103. 

 London, 1873. 



197. * On the Relations of the Middle and Upper Silurian (Clinton, 



Niagara and Lower Helderbergs) Rocks of the United States. 

 Ibid., pp. 103-104. (Published in full in the Geological Maga- 

 zine, vol. IX. London, 1872. 4 pp. 



198. On the Relations of the Niagara and Lower Helderberg Forma- 



tions, and their Geographical Distribution in the United States 

 and Canada. Proc. Am. Assoc. Ad. Sci., 22d meeting (Port- 

 land, 1873), pp. 321-335. Salem, 1874. 8vo. (Also published 

 in 27th Ann. Rept. St. Mus., 1875, with map.) 



199. Descriptions of Bryozoa and Corals of the Lower Helderberg 



Group. 26th Ann. Rept. N. Y. St. Mus. Nat. Hist., pp. 93- 

 115. (Published in advance.) Albany, 1874. 8vo. 



200. The Anderson School of Natural History and Geology of Peni- 



kese Island. Field meeting Albany Institute. 4 pp. Albany, 

 1874. 8vo. 



201. Descriptions of New Species Goniatitidae, with a list of previously 



described species. 27th Rep. N. Y. St. Mus. Nat. Hist., pp. 

 132-136. (Also published in advance, 1874.) Albany, 1875. 

 8vo. 



202. On the Geology of the Southern Counties of New York and ad- 



jacent parts of Pennsylvania, especially with reference to the 

 Age and Structure of the Catskill Mountain Range. Proc. 

 Am. Assoc. Ad. Sci., 24th meeting (Detroit), 1875, pp. 80-84. 

 Salem, 1876. 8vo. Also published in American Journal, 3d 

 Series, vol. 12, pp. 300-304. New Haven, 1876. 8vo. 



203. The Fauna of the Niagara Group in Central Indiana. 28th Rept. 



N. Y. St. Mus. Nat. Hist., documentary edition. 32 plates 

 and explanations, 1875. Albany, 1876. 



204. *Note upon the Geological position of the Serpentine Limestone 



of Northern New York and an Inquiry regarding the relations 

 of this Limestone to the Eozodn Limestone of Canada. Proc. 

 Am. Assoc. Ad. Sci., 25th meeting (Buffalo), 1876, p. 385. 

 Salem, 1877. 8vo. Published in Am. Jour., 3d Ser-, vol. 12, 

 pp. 298-300, 1876. 



205. Note upon the History and value of the Term Hudsou River 



Group in American Geological Nomenclature. Proc. Am. 

 Assoc. Ad. Sci., 26th meeting (Nashville), 1877, pp. 259-265. 

 Salem, 1878. 8vo. 



206. The Hydraulic Beds and Associated Limestones at the falls of the 



Ohio.' Trans. Alb. Inst, vol. IX, pp. 167-180, 1877. Albany, 

 1879. 8vo. Also published in Pal. N. Y., vol. V, pt. ii, pp. 

 139-148. Albany, 1879. 4to. 



207. Note on the Genus" Plumalina. 30th Rept. N.Y. St. Mus. Nat. 



Hist, pp. 255-256, 1 pi. Albany, 1878. Mus. Ed., 1879. 8vo. 



