862 INDEX TO THE STRATIGRAPHY OF NORTH AMERICA. 



819. TJdden, J. A., A sketch of the geology of the Chisos country, Brewster County, Tex.: Bull. Texas Univ. Min. 



Survey No. 93, 1907; (a) pp. 18-19; (b) pp. 26-27. 



820. TJlrich, E. O., Determination and correlation of formations of northern Arkansas: Prof. Paper U. S. Geol. Sur- 



vey No. 24, 1904, correlation table opp. p. 90, pp. 90-98; revised for this manuscript by Mr. Ulrich, 1910. 



821. Revision of the Paleozoic systems: Bull. Geol. Soc. America, vol. 22, 1911, pp. 281-680. 



822. TJlrich, E. O., and Gushing, H. P., Age and relations of the Little Falls dolomite (Calciferous) of the Mohawk 



Valley: Bull. New York State Mus. No. 140, 1910; (a) pp. 102-103. 



823. "Ulrich, E. O., and Schuchert, Charles, Paleozoic seas and barriers in eastern North America: Bull. New 



York State Mus. No. 52, 1902, p. 639. 



824. TJlrich, E. O., and Smith, W. S. T., The lead, zinc, and fluorspar deposits of western Kentucky: Prof. Paper 



U. S. Geol. Survey No. 36, 1905, p. 24. 



825. TJmpleby, J. B., Geology and ore deposits of Republic mining district: Bull. Washington Geol. Survey No. 1, 



1910, pp. 15-17. 



826. Van Hise, C. B,., The problem of the pre-Cambrian : Bull. Geol. Soc. America, vol. 19, 190«, pp. 1-28. 



827. — ^ — Principles of classification and correlation of the pre-Cambrian rocks: Jour. Geology, vol. 17, 1909, pp. 



97-104. 



828. Van Hise, C. B., and Leith, C. K., Pre-Cambrian geology of North America: Bull. U. S. Geol. Survey No. 360, 



1909; (a) pp. 889-890, 888 (Summary by A. H. Brooks, Alaska). 



829. Vanuxem, Lardner, Geology of New York, part 3, comprising the survey of the third geological district, 



Albany, 1842. 



830. Vaughan, T. W., A brief contribution to the geology and paleontology of northwestern Louisiana? Bull. U. S. 



Geol. Survey No. 142, 1896, p. 52. 



831. The Eocene and lower Oligocene coral faunas of the United States: Mon. U. S. Geol. Survey, vol. 39, 



1900. 



832. Reconnaissance in the Rio Grande coal fields of Texas: Bull. U. S. Geol. Survey No. 164, 1900; (a) pp. 



18-21, 28; (b) p. 37; (c) pp. 37,'38; (d) p. 45; (e) pp. 51-52. 



833. Uvalde folio (No. 64), Geol. Atlas U. S., U. S. Geol. Survey, 1900; (a) columnar section. 



834. The Miocene horizons at Porters Landing, Georgia: Science, new ser., vol. 31, 1910, pp. 833-834. 



835. A contribution to the geologic history of the Floridian Plateau: Pub. Camegio Inst. Washington No. 133, 



1910; (a) p. 128. 



836. Veatch, A. C, Geography and geology of the Sabine River: Louisiana Geol. Survey, pt. 6, 1902, p. 120. 



837. and others. Underground water resources of Long Island, New York: Prof. Paper U. S. Geol. Survey 



No. 44, 1906; (a) pp. 18-26; (b) pp. 27-28. 



838. Geology and underground water resources of northern Louisiana and southern Arkansas: Prof. Paper 



U. S. Geol. Survey No. 46, 1906; (a) table opp. p. 16; (b) pp. 20-22; (c) pp. 22-28: (d) p. 36; (e) p. 40; 

 (f) pp. 42-43; (g) pp. 43-44; (h) pp. 44-45. 



839. Geography *nd geology of southwestern Wyoming: Prof. Paper U. S. Geol. Survey No. 56, 1907, pp. 50-51; 



(a) table opp. p. 50; (b) p. 56; (c) pp. 56-58; (d) p. 59; (e) pp. 88-89; (f) p. 99. 



840. Origin and definition of the term "Laramie:" Jour. Geology, vol. 15, 1907, pp. 526-549. 



841. Coal fields of east-central Carbon County, Wyo.: Bull. U. S. Geol. Survey No. 316, 1907, pp. 244-r260; 



(a) pp. 246-250. 



842. Veatch, Otto, Second report on the clay deposits of Georgia: Bull. Geol. Survey Georgia No. 18, 1909, pp. 82-106. 



843. Veatch, Otto, and Stephenson, L. W., Preliminary report on the geology of the Coastal Plain of Georgia 



under direction of T. W. Vaughan: Bull. Geol. Survey Georgia No. 26, 1911. 



844. Walcott, C. D., The Permian and other Paleozoic groups of the Kanab Valley, Arizona: Am. Jour. Sci., 3d 



ser., vol. 20, 1880, pp. 221-225. 



845. Utica slate and related formations, and Fossils of the Utica slate: Trans. Albany Inst., vol. 10, 1883, 



pp. 1-38. 



846., Pre-Carboniferoua strata in Grand Canyon of Colorado, Arizona: Am. Jour. Sci., 3d ser., vol. 26, 1883, 



pp. 439^40. 



847. Paleontology of the Eureka district: Mon. U. S. Geol. Survey, vol. 8, 1884, p. 284. 



848. Second contribution to the studies on the Cambrian faunas of North America: Bull. U. S. Geol. Survey 



No. 30, 1886, pp. 32-35. 



849. The Taconic system of Emmons: Am. Jour. Sci., 3d ser., vol. 35, 1888, pp. 229-242, 307-327, 394-401; 



map opp. p. 326. 



850. Review of Dr. R, W. Ells's report on Geology of a portion of Quebec: Am. Jour. Sci., 3d ser., vol. 39, 



1890, pp. 111-113. 



851. Fauna of the Lower Cambrian or Olenellua zone: Tenth Ann. Rept. U. S. Geol. Survey, pt. 1, 1890, 



pp. 570-571; (a) footnote, p. 584. 



852. Study of a line of displacement in the Grand Canyon of the Colorado in northern Arizona: Bull. Geol. 



Soc. America, vol. 1, 1890, p. 50. 



853. Classification of the Quebec group rock (in discussion of the geology of Quebec, by H. M. Ami): Bull. 



Geol. Soc. America, vol. 2, 1891, p. 501. 



