502 AppcJidi.r. 



Society of Natural Sciences, Batavia. 



Boston Society of Natural History, U.S.A. 



Connecticut Academy, U.S.A. 



Johns Hopkins University, Baltimore, U.S.A. 



Second Geological Survey of Pennsylvania. 



Smithsonian Institute, Washington, D.C. 



Geological Survey of U.S. Territory, Washington, D.C. 



American Geographical Society, New York. 



New York Academy of Sciences. 



American Philosophical Society, Philadelphia. 



American Institute of Mining Engineers, Philadelphia. 



Franklin Institute, Philadelphia. 



Academy of Natural Sciences Library, Philadelphia. 



Wagner Free Institute of Science of Philadelphia. 



Academy of Natural Sciences, Buffalo. 



Academy of Natural Sciences, San Francisco. 



Academy of Natural Sciences, Davenport, Iowa. 



Harvard College, Cambridge, Massachusetts. 



Natural History Society of Frankfurt a 0. 



Royal Society of Literature and Arts of Belgium, Brussels. 



Royal Imperial Institute for Meteorology and Earth Mag- 

 netism, Hohe-Warte, Vienna. 



Jahrbuch der Kaiserlich-koniglichen Geologischen Reich - 

 sanstalt, Vienna. 



Ornithological Society, Vienna. 



Botanical Society of the Province of Brandenburg, Berlin. 



Dr. Bastian, Berlin. 



Royal Library, Berlin. 



Imperial German Academy of Naturalists, Dresden. 



Physico-economic Society of Konigsberg, E. Prussia. 



Verein fur vaterladische Naturkunde in Wurtternberg, 

 Stuttgart. 



Society of Geography, Leipzig. 



Redaktion des Biologischen Centralblatts, Erlangen. 



Biblioteca e dell Archivio Tecnico del Ministero Cordoba 

 dei Lavori Publici, Roma. 



R. Accademia dei Lincei, Rome. 



Imperial Museum of Florence. 



Royal Geographical Society of Italy, Florence. 



Orto e Museo Botanico (R. Instituto di Studi Superiori) in 

 Firenze. 



Tuscan Natural Science Society, Pisa. 



Museum of Zoology and Comparative Anatomy of the Royal 

 University of Turin. 



Editor of " Cosmos," Turin. 



Academy of Science, Modena. 



National Library, Paris. 



Societc de Geographie, Paris. 



