DABTON.] 



NORTH AMERICAN GEOLOGY. 



519 



Irving, Roland D.— Continued. 

 Note on some new points in the ele- 

 mentary stratification of the primordial 

 and Canadian rooks of south central 

 Wisconsin. 



Am. Jour. Soi., 3d series, vol. 9, pp. 440-143, 

 1875. 



Kaolin in Wisconsin. 



Wisconsin A.cad. Sci., Trans., vol. 3, pp. 3- 

 30, 1876. 



Note on the youngest Huronian rocks 



south of Lake Superior. 



Am. Jour. Sci., 3d series, vol. 11, p. 493 (i p.), 

 1876. 



[Report of progress in central and 



northern Wisconsin.] 



Geol. Surv. Wisconsin, Annual Report for 



1876, pp. 13-18, Madison, 1877. 



Geology of central Wisconsin, 



Geology of Wisconsin, surrey of 1873-1877, 



vol. 2, pp. 407-6'36, map in atlas, 1878. 

 Aljstract, Am. Jour. Sci., 3d series, vol. 15, 



pp. 62-64, 1878. 



Note on the age of the crystalline 



rocks of Wisconsin. 



Am. Jour. Sol., 3d series, vol. 13, pp. 307-B09, 

 1877. 



Driftless region of Wisconsin. 



Am. Jour. Sci., 3d series, vol. 15, pp. 406-407, 

 1878. 



Origin of the driftless region of the 



North'veest. 



Am. Jour. Sci., 3d series, vol. 15, pp. 313-314, 

 1878. 



[ ] [Report of work on the Penokee 



iron range.] 



Geol. Surv. Wisconsin, Annual Keport for 



1877, pp. 17-25, Madison, 1878. 



Note on the stratigraphy of the Hu- 

 ronian series of northern Wisconsin, and 

 on the equivalency of the Huronian of 

 the Marquette and Penokee districts. 

 Am. Jour. Sci., 3d series, vol, 17, pp. 393-398, 

 1879. 



The mineral resources of Wisconsin. 



Am. Inst. Mining £ng.. Trans., vol. 8, pp. 

 478-508, colored map, 1880. 



Geological structure of northern 



Wisconsin. 



Geology of Wisconsin, survey of 1873-1879, 

 vol. 3, pp. 1-25, atlas, 1880. 



Geology of the eastern Lake Superior 



district. 



Geology of Wisconsin, survey of 1873-1879, 

 vol. 3, pp. 51-215, atlas, 1880. 



Irving, Roland D. — Continued. 



The copper-hearing rocks of Lake 



Superior. 



TJ. S. Geol. Surv., J. W. PoweU, Director, 3d 

 Annual Report, 1881-82, pp. 89-188, Washing- 

 ton, 1882. 

 Abstract, Science, vol. 4, p. 67, (J p.), 4°, 1884. 



Microscopic examination of Archean 



rocks [from the Flambeau] River 

 country, Wis. 



Geology of Wisconsin, survey of 1873-1879, 

 vol. 4, pp. 617-621, 1882. 



The copper-bearing rocks of Lake 



Superior. 



tr. S. Geol. Surv., J. W. PoweU, Director, 

 Monographs, vol. 6, 464 pages, 29 plates, 4°, 

 Washington, 1883. 



Abstract, Science, vol. 5, pp. 299-300, 1883. 



The United States Geological Survey. 



School of Mines, Quart., vol.4, pp. 284-298, 

 1883. 



Minerals and lithology of Wisconsin. 



Geology of Wisconsin, survey of 1873-1879, 

 voL 1, pp. 309-361, 1883. 



On the paramorphic origin of the 



hornblende of the crystalline rocks of 

 the Northwestern States. 



Am. Jour. Sci., 3d series, vol. 26, pp. 27-32, 

 321-322; vol. 27, pp. 130-134; vol. 28, p. 464, 1883. 

 Reviewed by M. E. Wadswortb, ibid., vol. 

 26, p. 165 (4 p.). 



On the nature of the induration in 



the St. Peters and Potsdam sandstones 

 and in certain Archean quartzites in 

 Wisconsin. 



Am. Jour. Sci., 3d series, vol. 25, pp. 401-411, 

 1883. 



Reviewed by M. E. W[adsworth], Science, 

 vol.2, p. 62 (I p.), 4°, 1883. 



The copper -hearing rocks of Lake 



Superior. 



Science, vol. 1, pp. 140-141, 359-360, 422, 1883. 

 Reviewed by A. R. C. Selwyn, ibiii, p. 221 

 (J p.); M. E. Wadsworth, ibid, pp. 248-249 

 (J p.) ; N. H. Wlnchell, ibid, p. 334 (J p.). 



Iron ores. 



Geology of Wisconsin, survey of 1873-1879, 

 vol. 1, pp. 613-636, 1883. 



Report [on studies of Archean of the 



Northwest]. 



tr. S. Geol. Surv., J. W. PoweU, Director, 4th 

 Annual Report, 1882-83, pp. 28-34, Washing- 

 ton, 1884. 



Divisibility of the Archean in the 



Northwest. 



Am. Jour. Sci., 3d series, vol. 29, pp. 237-249, 

 1885. Address to Wisconsin Academy of Sci- 

 ence. 



