WASHINGTON ACADEMY OF SCIENCES 85 



Some features of the recent earthquake. Science, vol. 8, 1886, pp. 271- 

 275; Sci. Am. Suppl., vol. 23, 1887, pp. 9205, 9206. 



Methods of geologic cartography in use by the United States Geological 

 Survey. Compte Rendu Cong. Geol., Berlin, 1885, pp. 221-240. 



Methodes de Cartographic Geologique employees par 1'United States 

 Geological Survey. Annuaire Geol. Universel, 2 me Parte, 1886, App., 

 pp. 3-27. 



Report [of work]. U. S. Geol. Survey., 6th Ann. Rept, 1884-1885, 



1886, pp. 25-32. 



Geography and topography of the head of Chesapeake Bay. [Read 

 before Am. Assoc. Adv. Sci., 1886.] Abstract: Am. Jour. Sci., 3d ser., 

 vol. 32, 1886, p. 323. 



[Geology of Washington and vicinity.] Report of the health officer of 

 the District of Columbia for the year ending June 30, 1885, Wash., 1886, 

 pp. 19, 20; 23, 25. Abstract: Am. Jour. Sci., 3d ser., vol. 31, 1886, pp. 

 473, 474. 



Ovibos cavifrons from the loess of Iowa. Am. Jour. Sci., 3d ser., vol. 34, 



1887, pp. 217-220. Abstract: Am. Geol., vol. 1, 1887, pp. 126, 127. 



The Columbia formation. Am. Assoc. Adv. Sci., Proc., vol. 36, 1887, 

 pp. 221, 222. 



The field of geology and its promise for the future. Minn. Acad. Nat. 

 Sci., Bull., vol. 3, 1887-1889, pp. 191-206. 



Tuscaloosa formation. Summary of previous observations and opin- 

 ions. U. S. Geol. Survey, Bull, No. 43, 1887, pp. 247-255. 



The geology of the head of Chesapeake Bay. U. S. Geol. Survey, 7th 

 Ann. Rept., 1885-1886 [1887], pp. 537-646, pis. 56-71. Abstract: Am. 

 Geol., vol. 4, 1889, pp. 113-115. 



Report [Potomac division of geology]. U. S. Geol. Survey, 7th Ann. 

 Rept., 1885-1886 [1887], pp. 104r-lll. 



Three formations of the Middle Atlantic Slope. Am. Jour. Sci., 3d ser., 

 vol. 35, 1888, pp. 120-143, 328-330, 448-466. Abstracts: Nature, vol. 38, 

 1884, pp. 90, 91; Am. Geol., vol. 2, 1888, pp. 129-131. 



The classification of geographic forms by genesis. Nat. Geog. Mag., vol. 

 1, 1888, pp. 27-36. 



Notes on the geology of Macon County, Mo. St. Louis Acad. Sci., 

 Trans., vol. 5, 1888, pp. 305-336. 



Some definitions in dynamical geology. Geol. Mag. (Lond.), vol. 5, 



1888, pp. 489-495. 



Paleolithic man in America; his antiquity and environment. Pop. Sci. 

 Mo., vol. 34, 1888, pp. 20-36. 



