32 THE CAMBRIAN. [bull. 81. 



Meek, F. B., and F. V. Hayden. Descriptions of new Lower Silurian (Primordial) 



Jurassic, Cretaceous, and Tertiary Fossils, collected in Nebraska ; with some 



remarks on the rocks from which they were obtained. Phila. Acad. Sci 



Proc, vol. 13, J 861, pp. 415-447. 

 Newberry, J. S. Geological Report. Report upon the Colorado River of the West 



explored in 1857-'58 by Lieut. J. C. Ives. Part m, 1861, pp. 154. 

 Ordway, Albert. On the occurrence of other fossil forms at Braintree, Massachu 



• setts. Boston Soc. Nat. Hist., Proc, vol. 8, 1861, pp. 5,6. 



Rogers, William B. f Notes on the geological structure of western Vermont.] Re 



port on the geology of Vermont, vol. 1, 1861, pp. 326,327. 

 [On fossiliferous pebbles of Potsdam rocks in Carboniferous conglomerate north 



ot Fall River, Massachusetts.] Boston Soc. Nat. Hist., Proc, vol. 7, 1861, pp 



389-391. 

 Remarks on the geology of the neighborhood of St. John, New Brunswick 



Boston Soc. Nat, Hist.. Proc, vol.7, 1861, p. 176. 

 Shumard, B. F. [Letter on the Primordial of Texas.] Soc. geol. France, Bull. 



2 e ser. vol. 18, 1861, pp. 218, 219. 

 ■ The Primordial zone of Texas, with descriptions of new fossils. Am. Jour 



Sci., 2d ser., vol. 32, 1861, pp. 213-221. 

 Winchell, A. Geology. [General sketch.] Geol. Surv. Michigan, 1st Biennial 



Rep. of Prog., Lansing, 1861, pp. 21-141. 



1862. 



Agassiz, Louis. [On the difference between faunas of zoological and geological 

 periods.] Boston Soc. Nat, Hist., Proc, vol.8, 1862, p. 58. 



Billings, E. On Prof. J. Hall's claim to priority in the determination of the age of 

 the Red Sandrock series of Vermont. Am. Jour. Sci., 2d ser., vol. 33,1862, pp. 

 370-376. 



Further observations on the age of the Red Sandrock formation (Potsdam 



Group) of Canada and Vermont. Am. Jour. Sci., 2d ser., vol.33, 1862, pp. 

 100-105. (See note and corrections, same vol., pp. 421, 422.) 



Dawson, J. W. On the flora of the Devonian period in Northeastern America. 

 Quart. Jour. Geol. Soc, London, vol. 18, 1862, pp. 296-330. 



Hall, Jamks. Physical geography and general geology. Geol. Survey Wisconsin, 

 vol. 1, 18(2, pp. 1-72, maps. 



On a new crustacean from the Potsdam sandstone. Canadian Naturalist, vol. 



7, 1862, pp. 443-445. 



Supplementary note to the 13th Ann. Rep. State Cab. Nat, Hist., New York. 



Fifteenth Ann. Rep. State Cab. Nat, Hist., New York, 1862, p. 114. 



[Letter on the Primordial of America.! Soc geol. France., Bull., 2 e ser., vol. 19, 



1862, pp. 725-734. 



On the Potsdam sandstone and Hudson River rocks in Vermont. Am. Jour. 



Sci., 2d. ser., vol. 33, 1862, pp. 106-108. 



Hayden, F. V. The Primordial sandstone of the Rocky Mountains in the Northwest- 

 ern Territories of the United .States. Am. Jour. Sci., 2d ser., vol. 33, 1862, 

 pp. 68-79. Canadian Journal, new ser., vol. 7, 1862, pp. 149-151. 



Hitchcock, C. H. Repot ts on the Geology of Maine. Second Annual report on the 

 natural history and Geologv of Maine. Augusta, 1H62, pp. 223-264, 266-312, 

 323-332, 343-352, 377-382, 388-395, 404-405, 422-430, map. 



Fossils of the Potsdam Group in North America. Portland Soc. Nat. Hist., 



Proc vol. 1, 1862, pp. "87-90. 



Jukes, J. Beete. The Student's Manual of Geology. Second edition, Edinburgh, 

 1862, pp. xx, 764. 



Mahcou, Jules. [The slate of Nova Scotia metamorphic Taconic rock. ] Boston Soc 

 Nat. Hist., Proc, vol. 9, 1862, p. 47. 



Owen, Richard. Preliminary observations; General report and description by 

 counties. [Lower and Upper Silurian.] Geological reconnaissance of Indi- 

 ana, made in 1859-'60, Indianapolis, 1862, pp. 3-26, 30-91. 



Shumard, B. F. Notice of some new and imperfectly known fossils from the Pri- 

 mordial Zone (Potsdam and Calciferous sand group) of Wisconsin and Mis- 

 souri. St. Louis Acad. Sci. Trans., vol. 2, 1862, pp. 101-107. 



Whitney, J. D. [Stratigraphical geology.] Geol. Survey Wisconsin, vol. 1, 1862, 

 pp. 140-192. 



1863. 



Bigsby, J. J. On the Cambrian and Huronian formations. Quart. Jour. Geol. Soc. 



London, vol. 19, 1863, pp. 36-52. 

 Campbell, J. Report on the Gold Fields of Nova Scotia. Halifax, 1863, pp. 12. 



