256 ADDITIONS TO THE LIBRARY. 



Spain. Comision del Mapa Geolorjico cle Espana. Boletin. Tomo iii. 

 Cuaderno 2. 8vo. Madrid, 1876. 



. . . Tomo xvi. 1890. 



— . . Mcmorias. Descripcion fisica y geologica de la 



Provincia de Huesca, por L. Mallada. 8vo. Madrid, 1878. 



Descripcion fisica, geologica, y minora de la 



Provincia de Huelva, por D. J". Gonzalo y Tarin. Tomo 2. 

 Parte 3. 8vo. Madrid, 1888. 



Spencer, J. W. Elevations in the Dominion of Canada. 8vo. 

 Washington (D.C.), 1884. 



Niagara Fossils. Vol. i. No. 1. 8vo. St. Louis, Mo., 



1884. 



The Mississippi Eiver during the Great River Age. 8vo. 



1884. 



— . Occurrence of Boulders of Decomposition at Washington, 

 D.C. 8vo. Philadelphia, 1885. 



— . Hummocks and Boulders of Decomposition in South-eastern 



Missouri. 8vo. London, 1887. 



— . Notes on the Erosive Power of Glaciers, as seen in Norwa5^ 

 8vo. London, 1887. 



Notes upon Ice-action in High Latitudes. 8vo. London, 



1888. 



— . The Iroquois Beach : a Chapter in the Geological History 

 of Lake Ontario. 8vo. Montreal, 1889. 



— . Origin of the Basins of the Great Lakes of America. 8vo. 

 London, 1890. 



— . The Deformation of Iroquois Beach and Birth of Lake 

 Ontario. 8vo. New Haven (Conn.), 1890. 



— . " Southern Drift " and its Agricultural Relations. 8vo. 



Atlanta (Ga.), 1890. 



The High Continental Elevation preceding the Pleistocene 



Period (in America). 8vo. London, 1890. 

 — . Deformation of the Algonquin Beach, and Birth of Lake 



Huron. 8vo. New Haven (Conn.), 1891. 



High Level Shores in the Region of the Great Lakes, and 



their Deformation. 8vo. New Haven (Conn.), 1891. 



Post-pliocene Subsidence versus Glacial Dams. 8vo. Ro- 



chester (N.Y.), 1891. 



