OABTON.] 



NORTH AMERICAN GEOLOGY. 



167 



Cambrian — Continued. 



General — Continued. 

 ' 1887-1889. Classification and use of 

 term "Taoonio," Blake, Dana, 

 J. D. ; Dawson, J.W. ; Dntton, 

 Emerson, Emmons, S. F. ; 

 Ford, Frazer, Hague, Hall, J. ; 

 Hitchcock, C. H. ; Irving, R. 

 D. ; Newberry, Selwyn, Wal- 

 cott, Williams, G. H. ; Win- 

 ohell, A. ; Winchell, N. H. 



Barrande and the Taconlc, 

 Marcou, J. 



Canadian geological classifica- 

 tion in Quebec by Marcou, 

 Selwyn. 



Subcommittee on Lower Paleo- 

 zoic, Winchell, N. H. 



Classification in Acadia, Mat- 

 thew. 



Crystalline schists, Hunt. 



Elements of primary geology, 

 Hunt. 



Geological questions, Frazer. 



History of Taoonic ideas, 

 Dana, J. D. 

 How is the Cambrian divided? 

 Matthew. 



Objections to the term "Ta- 

 conic " considered, Winchell, 

 N.H. 



Position of Olenellus beds, 

 Nathorst. 

 Principles of the adversaries of 

 the Taoonic, Marcou, J. 

 1890. Geological classification for 

 Quebec, Marcou, J. 



History of Quebec group, Hunt, 

 T. S. 



Lower and Middle Taconic, 

 Marcou, J, 



North American geology by 

 Miller, Dana, J. D. 



Quebec and Taoonio, American 

 Geologist. 



Quebec group of Logan, Daw- 

 son, J. W. 



Cambrian and Silurian, Sedg- 

 wick and Murchison, Dana, 

 J.D. 



The Cambrian system, Dwight. 



Iron ores of the United States, 

 Hunt, T. S. 



Fauna of Lower Cambrian, 

 Walcott. 



Cambrian — Continued. 

 General — C ontinued . 

 1891. Causes of spread of Cambrian 

 faunas, Matthew. 

 Notes on Cambrian faunas, 



Matthew. 

 Fauna of the Lower Cambrian, 



James. 

 Biographical notes of E. Em- 

 mons, Marcou, J., Ami. 

 Geology of environs of Quebec, 



Marcou, J. 

 Cambrian of North America, 



Walcott. 

 Classification of Quebec group 



rocks, Walcott. 

 American opinion on the older 

 rocks, Winchell, A. 

 Cambridge, H. U., Porter, J., and, and 

 Webb, T. H. Account of the Eoxbury 

 rocking stone. 



Am. Joar. Sci., vol. 7, pp. 59-61, 1824. 



Campbell, H. D. The Potsdam group 

 east .of the Blue Ridge at Balcony Falls, 

 Virginia. 



Am. Jour. Sci., 3d series, vol. 29, pp. 470-474, 

 1885. 

 Thfi Virginias, vol. 6, pp. 99-100, 1885. 



and BroTwn, W. G. Composition of 



certain Mesozoic igneous rocks of A''ir- 

 ginia. 



Geol. Soc. Am., Bull., vol. 2, pp. 389-348, 1891. 



Abstracts, Am. Geol.,vol. 8, p. 54 (J p.), 1891. ; 



Am. Nat., vol. 25, pp. 1002-1003 (i p.), 1891. 



Campbell, H. D., Campbell, J. L., and. 

 The Snowden slate quarries. 



The Virginias, vol. 5, pp. 162-183, 170, 4°, 

 1884. 



Review of William B. Rogers's 



Geology of the Virginias . 



Am. Jour. Sci., 3d series, vol. 30, pp. 357-374, 

 1885; vol. 31, pp. 193-202. 



[ ] Georgia Pacific Railway. 



Macfarlane's G-eol. Bwy. Gruide, 2d ed., pp. 

 383-385, 1890. 



[ ] [Virginia in part.] 



Hacfarlane's Geol. E-wy. Guide, 2d ed.,pp. 

 359-362, 1890. 



Campbell, J. K. Highland County ge- 

 ology, Virginia. 



The Virginias, vol. 6, pp. 117-119, 1885. 



Campbell, J. L. Silurian formation in 

 central Virginia. 



Am. Joar. Sci., 3d series, vol. 18, pp. 16-29, 

 1879. 



The Virginias, vol. 1, pp. 41-44, 54-56, 4°, 

 1880, with revision by author. 



