230 CATALOGUE OP THE LIBRARY. 



Scudder, Samuel Hubbard. See Monographs of the U. S. Geolo- 

 gical Survey, no. 21, 1893. 



Smyth, Henry Lloyd. See Monographs of the U. S. Geological 

 Survey, nos. 28-29, 1896-1897. 



*Tarr, Ralph S. Economic geology of the United States with briefer 

 mention of foreign mineral products, 1894. 



TTpham, Warren. See Monographs of the U. S. Geological Survey, 

 no. 25, 1895. 



Van Hise, Charles Richard. See Monographs of the U. S. Geolo- 

 gical Survey, nos. 19, 1892 and 28-29, 1896-1897. 



*Vezian, Alexandre. Prodrome de geologic, vols. 1-3, 1863-1865. 



Walcott, Charles D. See Annual Eeports of the U. S. Geological 

 Survey to the Secretary of the Interior, nos. 16-17, 1895- 

 1896. 



Walcott, Charles D. See Monographs of the U. S. Geological 

 Survey, no. 30, 1898. 



Whitfield, Robert Parr. See Monographs of the U. S. Geological 

 Survey, no. 18, 1891, and no. 24, 1894. 



Whitfield, Robert Parr. See Monographs of the U. S. Geological 

 Survey, no. 24, 1894. 



Wolff, J. E. See Monographs of the U. S. Geological Survey, 

 no. 23, 1894. 



Yarza, Ramon Adan de. See Memorias de la Comision del Mapa 

 Geologico de Espana, 1884, 1892. 



* Annual reports of the U. S. Geological Survey to the Secretary 

 of the Interior by J. W. Powell and Charles D. Walcott, 

 nos. 9-17, in 21 vols., 1887-1896. 



*Boletin de la Comision del Mapa Geologico de Espana, vols. 1-22, 

 1874-1897. 



Memorias de la Comision del Mapa Geologico de Espana : trabajos 

 geodesticos y topograficos por la Comision de Estudio de 

 Cuencas Carboniferas de Asturias by Daniel de Cortazar, 

 Felipe Martin Donayre, J. Egozcue, Amalio Gil y Maestre, 

 L. Mallada, Jose Maureta and Kamon Adan de Yarza, 1874- 

 1882, 1892, 1895-1896. 



