BIBLIOGRAPHY OF ROBERT HAY. 373 



The Triassic rocks of Kansas [abstract] : Ibid., pp. 38, 39 (£ p.). Abstract in Am. 

 Geologic, vol. 5, 1889, p. 250 (3 lines). 



Recent discoveries of rock salt in Kansas [abstract] : Pror. Am. Assoc. Adv. Sci.> 

 vol. 37, 1889, pp. 184, 185. 



Northwest Kansas, its topography, geology, climate, and resources : Sixth Report of 

 Kansas State Board of Agriculutre, 1889, pp. 92-116, pi. 



Salt, its discovery and manufacture in Kansas, with suggestions for its use in agri- 

 culture: Ibid., pp. 192-204. 



A geological reconnoissance in southeastern Kansas : Bull. No. 27 , U. S. Geol. Sur- 

 vey, Washington, 1890, pp. 15-49, pis. 1, 2. Abstract in Am. Geologist, vol. 6, 

 1890, pp. 389, 390 (| p.). 



Some Kansas industries : Proc. Nineteenth Annual Meeting Kansas State Board of 

 Agriculture, 1890 (5 pp.). 



[An article on natural gas and oil :] Fifth Biennial Report Kansas State Board of Ag- 

 riculture. 



Irrigation in Kansas : Seventh Biennial Report Kansas State Board of Agriculture. 



Artesian wells in Kansas and causes of their flow : Am. Geologist, vol. 5, 1890, pp. 

 296-301. Sci. Am. Supp., vol. 29, no. 755, 1890, pp. 12066, 12067. Abstract in 

 Trans. Kansas Acad. Sci., vol. 12, 1890, pp. 24, 25. 



[Remarks on certain peculiarities in the distribution of lignite in the Dakota for- 

 mation in Kansas:] Bull. Geol. Soc. Am., vol. 1, 1890, p. 26 (J p.), in discus- 

 sion of paper by G. K. Gilbert: " The strength of the earth's crust." 



Notes on Kansas salt mines: Am. Geologist, vol. 5, 1890, pp. 65-67, pi. 2. 



Notes on some Kansas salt marshes : Trans. Kansas Acad. Sci., vol. 12, 1890, pp. 

 97-100. 



The Great Plains: Presidential Address before the Kansas Acad. Sci., 1891. 



Geology and mineral resources of Kansas : Eighth Biennial Report Kansas State Board 

 of Agriculture, 1891-1892, pp. 99-162. Describes the topographic features and 

 lithologic character and the relations of the Carboniferous, Cretaceous, Ter- 

 tiary, and post-Tertiary formations in the state, including an account of the 

 lead and zinc, coal, salt, and other mineral deposits. 



Notes on some new species of fossil cephalopods: Trans. Kansas Acad. Sci., vol. 

 xiii, 1892, pp. 37-47. Description of species occurring in the Carboniferous 

 and Permo-Carboniferous of Kansas. 



Some characteristics of the glaciated area of northeastern Kansas: Ibid., pp. 104- 

 106. Describes the glacial deposits and phenomena of this region. 



Sandstone dikes in northwestern Nebraska: Bull. Geol. Soc. Am., vol. 3, 1891, pp. 

 50-55, figs. 1-5. Briefly describes the geologic formations of the region and 

 states the width and direction of the two dikes. 



A contribution to the geology of the Great Plains: Ibid., pp. 519-521. Abstract : 



Am. Geologist, vol. xi, pp. 56, 57. The surface of the plains area consists of calca- 

 reous and arenaceous clays of Tertiary age which may grade into post-Pliocene 

 to the east. 



Final geological reports of the artesian underflow investigation between ninety- 

 seventh meridian of longitude and foothills of the Rocky mountains: Report 

 of the Secretary of Agriculture, pt. 3, 1893, 209 pp. , 36 pis. , and 6 maps. 



Irrigation — Kansas. Redemption of the plains : Appeared in Harpers Weekly, the 

 last in March, 1895. 



A bibliography of Kansas geology, 1893-1894: Trans. Kansas Acad. Sci., vol. xiv 

 (published in 1896). 



