secretary's report. 
481 
Wagner Free Institute of Science, Philadelphia, U.S.A. 
Wisconsin Academy of Sciences, Arts, and Letters. 
Smithsonian Institution, Washington, D.C. 
L'Academie Royale Suedoise des Sciences, Stockholm. 
Societe Imperiale Mineralogique de St. Petersburg. 
Societe Imperiale des Naturalistes, Moscow. 
Comite Geologique de la Russie, St. Petersburg. 
Instituto Geologico de Mexico. 
Sociedad Cientifica "Antonio Alzate,"' Mexico City. 
Naturhistorischen Hofmuseum, W^ien, Austria. 
Societe d'Emulation d'Abbeville, Abbeville. 
L'Academie Royale des Sciences et des Lettres de Danemark, Copen- 
hague. 
Royal University of Norway, Kristiania. 
Kaiserliche Leopold-Carol. Deutsche Akademie der Xaturforscher, 
Halle-a-Saale. 
Geological Institution, Royal University Library, Upsala. 
Imperial University of Tokyo, Japan. 
Museu Nacional de Rio de Janeiro. 
W. Lower Carter. 
