secretary's report. 
135 
i^ociete 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, Wien, 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 Naturforscher, 
Halle-a-Saale. 
Geological Institution, Royal University Library, Upsala, 
Imperial University of Tokyo, Japan. 
Museu Nacional de Rio de Janeiro. 
W. Lower Carter. 
