DABTON.] 



KOETH AMERICAN GEOLOGY. 



1019 



WiHiama, George H. — Continued. 

 Tlie rocks and their relations [Pied- 

 mont Plateau]. 



Guide to "W"asliingfcoD, prepared for the In- 

 ternational Cong. Geol., 5th session, "Washing- 

 ton, pp. 43-14 (I p.), 1891. 



Crystalline rocks of Washington. 



Guide to "Washington, prepared for the In- 

 ternational Cong. Geol., 5th session, "Washing- 

 ington, pp. 56-57, 1891. 



The geological excursion by univer- 

 sity students across the Appalachians 

 in May, 1891. 



Johns Hoptins Univ., Circulars, vol. 11, pp. 

 25-27, No. 94, 4°, 1891. 



The petography and structure of the 



Piedmont Plateau In Maryland. 



Geol. Soc. Am., Bull., vol. 2, pp. 301-317, 318, 

 plate 12, 1891. 



Ahstraots, Am. Geol., vol. 8, pp. 330-331 

 (i p.) ; Am. IsTat., vol. 25, pp. 909-910 (Jp), 1891. 



The silicified glass-breccia of Ver- 

 milion Eiver, Sudbury district. 



Geol. Soc. Am., Bull., vol. 2, pp. 138-140, 1891. 

 Abstracts, Am. Geol., vol. 7, p. 261 (3 lines) ; 

 Am. Nat., vol. 25, pp. 1005-1006 (i p.), 1891. 



'Williams, Henry S. Paleontological re- 

 searches, Genesee slate. 



Science (edited hy Michels),vol. 1, pp. 190- 

 191, 4°, 1880. 



Channel fillings in Upper JDevouian 



shales. 



Am. Jonr. Soi., 3d series, vol. 21, pp. 318-320, 

 1881. 



The recurrence of faunas in the De- 

 vonian rocks of New York. 



Am. Assoc. Adv. Sci., Proc, vol. 30, pp. 186- 

 191, 1882. 



Equivalency of the Lime Creek beds 



of Iowa. 



Am. Jonr. Sci., 3d series, vol. 25, p. 311 (J p.), 

 1883. 



Comparative paleontology of the 



Devonian formation. 



Science, vol. 2, pp. 836-837, 1888. 



The undulations of the rock masses 



across central New York State. [Ab- 

 stract.] 



Am. Assoc. Adv. Sci., Proc, vol, 31, p. 412, 

 1883. 



On a remarkable fauna at the base 



of the Chemung group in New York. 

 Am. Jour. Sci., 3d series, vol. 25, pp. 97-104, 

 1883. 



[Genesee and Portage in Genesee 



and Wyoming counties, N. Y.] 

 Science, vol. 3, p. 421 (i p.), 1884. 



■Williams, Henry S. — Continued. 



[ ] The age of the sandrook at Austin, 



Mower County. 



Minnesota Geol. and Nat. Hist. Surv., 12th 

 Annual Report for 1883, p. 9, 1884. 



On the fossil faunas of the Upper 



Devonian along the meridian of 76" 30', 

 from Tompkins County, N. Y., to Brad- 

 ford County, Pa. 



U. S. Geol. Surv., J. W. Powell, Director, 

 BuU., vol. 1, No. 3, pp. 56-80, Washington, 1884. 



Geographical and physical condi- 

 tions as modifying fossil faunas. [Ab- 

 stract.] 



Am. Assoc. Adv. Sci., Proc, vol. 33, pp. 422- 

 423, 1884. 



Ahstraot, Science, vol. 4, pp. 326-327 (i p.), 

 1884. 



Discussion by C. A. Ashhumer and J. Hall, 

 Science, ibid. 



On the classification of the Upper 



Devonian. 



Am. Assoc Adv. Sci., Proc, vol. 34, pp. 222- 

 234, 1886. 



Abstract, Science, vol. 6, pp. 220-221 (i p.) 

 1885. 



Abstract, with comments by J. Hall, Am. 

 Jour. Soi., 3d series, vol. 30, p. 316 (J p.), 1885. 



A revision of the Cayuga Lake [New 



York] section of the Devonian. 

 [Bead to Am. Assoc. Adv. Sci., 1886.] 

 Brief abstract in Am. Jour. Sci., 3d series, 

 vol. 32, p. 321, 1886. 



Methods of instruction in general 



geology. 



Am. Nat., vol. 21, pp. 616-626, 1887. 



-. On the fossil faunas of the Upper 



Devonian — the Genesee section, New 

 York. 



T7. S. Geol. Surv., Bull., vol. 6, pp. 481-603, 

 plates 1-4, No. 41, "Washington, 1887. 



On the different types of the Devo- 

 nian system in North America. 



Am. Jour. Sci., 3d series, vol. 35, pp. 51-59, 

 1888. 



Abstracts, Nature, vol. 37, p. 358 (11 lines) ; 

 Am. Assoc. Adv. Sci., Proc, vol. 36, pp. 207- 

 208 (I p.), 1888. 



Report of the subcommittee of the 



Upper Paleozoic (Devonic). 



Intemational Cong. Geol., Am. Committee, 

 Eeports, 1888, C, 31 pages, 1888. 

 Am. Geol., vol. 2, pp. 225-239, 1888. 

 Reviewed by Jules Marcou, Am. Geol., vol. 

 3, pp. 60-61 (J p.), 1889. 



On the relation of the Devonian 



fauuEB of Iowa. 



Am. Geol., vol. 3, pp. 230-233, 1889. 



