Marcou.J 354 [March 2, 



State of New York, No. 200, in assembly, February 20. 8vo, 

 Albany. {Sandstone of Potsdam, p. 214). In "Second Annual 

 Report of the Geological Survey." 



1842. Geology of New York, Part n, comprising the survey of the .sec- 

 ond geological district. 4to, Albany. The Taconic System con- 

 stitutes Chapters vn, vni and ix, pp. 135-164. No fossils. 



1844. The Taconic System, based on observations in New York, Massa- 

 chusetts, Maine, Vermont and Rhode Island. 4to, Albany. Fos- 

 sils found and described. 



1846. Agriculture of New York, Vol. i. The Taconic System, Chapter v, 

 with an appendix, pp. 45-109 and 112. 4to, Albany. 



1855. American Geology, Vol. i, Part n, pp. 1-122. 8vo, Albany. 



1859-60. Manual of Geology, first edition in 1859 and a second edition in 

 1860. 8vo, New York. 



LAPWORTH (CHARLES), 



1879. On the Tripartite Classification of the Lower Palaeozoic Eocks 

 (Geological Magazine, new series), Decade n, Vol. vi, January. 



MARCOU ( JULES) . 



1860. On the Primordial fauna and the Taconic system by Joachim 



Barrande. With additional notes by Jules Marcou (Proceed. 

 Boston Soc. Nat. Hist. Vol. vn, p. 369, October) Boston. In it the 

 Potsdam sandstone is placed for the first time as the last term 

 of the Taconic, instead of being the first term of the Lower Silu- 

 rian or Champlain. 



1861. Sur les roches fossiliferes les plus anciennes de l'Amerique du Nord. 



In two letters to Elie de Beaumont, September, 1S61 (Comptes 

 rendus de VAcademie des Sciences de Fi'ance, tome liii, pp. 803 and 

 915, Novembre, 1861). Paris. 



^ The Taconic and Lower Silurian rocks of Vermont and Canada 



(Proceed. Boston Soc. Nat. Hist,., Vol. vni, p. 239, November, 

 1861), Boston, one hundred separate copies printed, with a title- 

 page dated 1862. 



1862. Liste additionelle des fossiles du terrain taconique de l'Amerique du 



Nord (Bulletin Soc. Geol. du France, 2e serie, tome xix, p. 744) 

 Paris. 



Letter to M. Joachim Barrande on the Taconic rocks of Vermont 



and Canada, August, 1862, Cambridge, Mass. For the first time 

 "lenticular masses of limestone" inclosed in the Taconic slates 

 are recorded. 



1864. Notice sur les gisements des lentilles trilobitiferes taconiques de 

 la Pointe-Levis au Canada. (Bulletin Soc. geol. de France, 2e 

 serie, tome xxi, p. 236), Paris. 



1881. Sur les colonies dans les roches taconiques des bords du lac Cham- 

 plain (Bulletin Soc. geol. de France, 3e serie, tome ix, p. 18, 

 Novembre, 1880), Paris. 



