DONS. — SÉANCE DU 15 FÉVRIER 1897 17 



Espagne. — Madrid. — La Naturaleza. T. VIII (4^ série), 1897, 

 N» 2. 



États-Unis d'Amérique. — Des Moines. — Proceedings of 

 the lowa Academy of Sciences for 1895. T. III, 1896. 



Youtz : Clays of the Indianola Brick, Tile and Pottery Works, pp. 40-44. 

 Fultz : Récent discoveries of glacial scorings in Southeastern lowa, pp. 60-63, 1 pi. 

 Tilton : Ttie area of slate near Nashua, N. II., pp. 66-71, fig. et 1 pi. 

 Tilton : Notes on the geology of the Boston Basin, pp. 72-76, 1 carte. 

 Keyes : Two remarkable Gephalopods from the upper Paleozoic, pp. 76-78, t fig. 

 W. Harmon-Norton : Variation in the position of the nodes on the axial segments 

 of pygidium of a species of Encrinurus, pp. 79-81. 

 Shimek : A theory of the loess, pp. 82 89. 



— lowa Geological Survey, vol. V. Annual Report 1895. 1896, 

 avec cartes et planches. 



Minneapolis. — The American Geologist. T. XVIII, 1896, N^^ 4-5. 



Claypole : Dinichthys Prentis-Clarki, pp. 199-201, 1 pi. 



Weed : The Fort Union Formation, pp. 201-211. 



Winchell et Grant : Volcanic ash from the north shore of Lake Superior, 

 pp. 211-213. 



Warren Upham : Bufïalo meetings of the geological Society and American Asso- 

 ciation, pp. 213-239. 



Me I. Luquer et Ries : The « augen » gneiss area, pegmatite veins and diorite 

 dikes at Bedford, pp. 239-261, 2 pi. 



Safïord : A new and important source of phosphate rock in Tennessee, pp. 261-264. 



Winchell : The Arlington Iron. Minnesota N» 2, pp. 267-271, 1 pi. 1 fig. 



Fairbanks : The âge of the California coast Ranges, pp. 271-282. 



Wadsworth : The élective System in enginnering collèges, pp. 282-289. 



Keyes : Orotaxis, a method of géologie corrélation, pp. 289-302. 



Claypole : Humanrelics in the drift of Ohio, pp. 302-314. 



New-Haven. — The American Journal of Science. 4^ série, t. III, 

 1897 (février). 



Beecher : Outline of a natural classification of the Trilobites, pp. 89-106, 1 pi. 



Philadelphia. — Proceedings of the Academy of Natural Sciences. 

 1896, 2e partie. 



Cope : New and little known Maminalia from the Port Kennedy Bone deposlt, 

 pp. 378-394. 



— Journal of the Academy of Natural Science. 2^ série, vol. X, 

 4e partie, 1896. 



— Proceedings of Ihe American Philosophical Society. Vol. 

 XXXV, 1896, No 151. 



Cope : Second contribution to the history of the Cotylosauria, pp. 122 1.38, 4 pi. 

 et fig. 



