secretary's report. 
257 
Leeds Astronomical Society. 
Rochdale Literary and Scientific Society. 
Warwickshire Natural History and Topographical Society. 
Yorkshire Naturalists' Union. 
American Philosophical Society, Philadelphia, U.S.A. 
American Museum of Natural History, New York, U.S.A. 
Academy of Natural Sciences, Philadelphia, U.S.A. 
Boston Society of Natural History, Boston, U.S.A. 
California State Mining Bureau, San Francisco. 
Chicago Academy of Sciences. 
Museum of Comparative Zooloi/y at Harvard College, Cambridge, Mass. 
Rochester Academy of Science, U.S.A. 
United States Geological Survey, Washington, D.C. 
Elisha Mitchell Scientific Society, University of N. Carolina, Chapel 
Hill, U.S.A. 
Wisconsin Academy of Sciences, Arts, and Letters. 
Konigelige Danske Videnskabernes Selscabs, Kjopenhavn. 
L' Academic Royale Suedoise des Sciences, Stockholm. 
Naturhistorischen Hofmuseum, Wien. 
Royal University of Norway, Christiania. 
Societe Imperiale Mineralogique de St. Petersburg. 
Societe Imperiale des Naturalistes, Moscow. 
Comite Geologique de la Russie, St. Petersburg. 
Institute Ceologico de Mexico. 
Sociedad Cientifica " Antonio Alzate," Mexico City. 
