DAKTON.] 



NORTH AMERICAN GEOLOGY. 



965 



Tyndall, John. Some observations on 

 Niagara. 



Popular Sci. Monthly, vol. 3, pp. 210-226, 

 1873. 

 Lecture to Itoyal Institution, April 4, 1873. 



Tyrrell, J. B. Report on a part of north- 

 ern Alberta and portions of the adjacent 

 districts, Assinniboine and Saskatche- 

 wan, embracingthe country lying south 

 of North Saskatchewan River and north 

 of latitude 50° 6', between longitude 

 110° and 115° 15' west. 



Canada, Geol. and Nat. Hist. Surv., Eeport, 

 1886, Part E, pp. 1-152, plates, maps 3-4 in 

 atlas, Montreal, 1887. 



Abstracts, ibid.. Part A, pp. 9-11; Gcol. 

 Mag., 3d decade, vol. 5, pp. 368-373, 1887. 



On the superficial geology of the cen- 

 tral plateau of northwestern Canada. 

 [Abstract.] 



Nature, vol. 39, p. 95 (24 lines), 1888. 

 Bead to Geological Society. 



Notes to accompany a preliminary 



map of the Duck and Riding Mountain 

 in northwestern Manitoba. 



Canada, Geol. Surv., Reports, vol. 3, new 

 series, part 1, Eeport E, 16 pages, map, 1888. 



Abstracts, ibid., Eeport A, pp. 14-18 ; Am. 

 Geol., vol. 5, pp. 241-242 (f p.), 1890 ; Am. Jour. 

 Sci., 3d series, vol. 38, p. 78 (i p.), 1888. 



[Observations in southwestern Man- 

 itoba.] 



Canada, Geol. Surv., Eeports, vol. 3, new 

 series, part 1, Eeport A, pp. 72-75, 1888. 



Gypsum deposits in northern Mani- 

 toba. 



Canadian Eec. Sci., vol. 3, pp. 353-360, 1889. 



The Cretaceous of Manitoba. 



Am. Jour. Sci., 3d series, vol. 40, pp. 227-232, 

 1890. 



[Summary report of surveys about 



Lake Wmnipegosis and in the Porcu- 

 pine Mountains.] 



Geol. Surv. Canada, Eeport, vol. 4, new se. 

 ries, Eeport A, pp. 15-25, 1890. 

 Abstract, Am. Geol., vol. 7, p. 374 (i p.), 1891. 



Post-Tertiary deposits of Manitoba 



and the adjoining territories in North- 

 western Canada. 



Geol. Soc. Am., Bull., vol. 1, pp. 395-406, 407, 

 440, 1890. 



Tyrrell, J. B.— Continued. 



Discussed by J. E. Mills, T. C. Chamberlin, 

 N. S. Shaler, W J MoGee, and J. W. Spencer, 

 pp. 407-409. 



Abstracts, Am. Geol., vol. 6, p. 119 (J p.); 

 Am. Nat., vol. 24, pp. 208-209 (i p.) ; Am. Jour. 

 Sci., 3d series, vol. 40, p. 88-90,— all 1890. 



[Remarks on the Laramie group and 



its associates in Canada.] 



Geol. Soc. Am., Bnll., vol. 1, pp. 528-529 ftp.), 

 1890. 



In discussion of paper by J. S. Newberry on 

 "Tbe Laramie group." 



Pleistocene of the Winnipeg basin. 



Am. Geol., vol. 8, pp. 19-28, 1891. 



Foraminifera and Radiolaria from 



the Cretaceous of Manitoba. 



Canada, Eoyal Soc, Trans., vol. 9, section 4, 



pp. 111-115, 1891. 



Tyson, Philip T. A description of the 



Frostburg coal formation of Allegany 



County, Md., with an account of its 



geological position. 



Maryland Acad. Sci., Trans. ,voL 1, pp. 92-98, 

 plate, 1837. 



A descriptive catalogue of the princi- 

 pal minerals of the State of Maryland. 

 Maryland Acad. Sci., Trans., vol. 1, pp. 102- 

 117, 1837. 



Geology and industrial resources of 



California, to which is added the o£Scial 

 reports of Generals Persifor F. Smith 

 and B. Riley, Including the reports of 

 Lieutenants Talbot, Ord, Derby, and 

 Williamson, of their explorations in 

 California and Oregon, and also of their 

 examination of routes for railroad com- 

 munications eastward from those coun- 

 tries, xxxiv, 127, 37 pages, map, Balti- 

 more, 1851 [also Washington, 1850. Not 

 seen]. 



Abstract, Am. Jour. Sci., 2d series, vol. 11, 

 p. 301 (ip.), 1851. 



First report of the State agricultural 



chemist of Maryland, 145, 20 pages, 2 

 maps, Annapolis, 1860. 



Second report of the State agricul- 

 tural chemist of Maryland, 92 pages, 

 Annapolis, 1862. 



Section of Cumberland coal basin. 



Am. Phil. Soo., Proc, vol. 11, pp. 9-13, 1871. 



