Exchanges. 53 



Mexico. — Boletin Mensual del Observatoria Meteorologico 

 Magnetico Central de Mexico, also Anuaria. 

 ,, Boletin de Institute Geologico de Mexico. 



MiLWAUKEK. — Bulletin of the Wisconsin Natural History Society. 



Minneapolis. — Bulletin of the Minnesota Academy of Natural 

 Sciences. 



Missoula. — Bulletin of the University of Montana. 



Montevideo.— Anales del Museo Nacional de Montevideo. 



Montreal. — Reports and Maps, Geological and Natural History 

 Survey of Canada. 



Moscow. — Bulletin of the Imperial Society of Naturalists of 

 Moscow. 



New Haven, Conn. — Yale University Library. 



New York. — Bulletin of the American Geographical Society. 

 ,, Annals of the New York Academy of Sciences. 



,, Columbia University Library. 



New Orleans. — Louisiana State Museum. 

 „ Natural History Survey. 



Norman. — The University of Oklahoma. 



Nottingham. — Annual Report and Transactions of the Notting- 

 ham Naturalists' Society. 



Orono. — The University of Maine. 



OsNABRUCK. — Silbzehnter Jahresbericht des Naturwissenschaft- 

 lichen Vereines zu Osnabruck. 



Ottawa. — Annual Report of Geological Survey of Canada. 



Oxford. — The Ashmolean Natural History Society. 



Padua. — Atti della Accademia Scientifica Veneto-Trentin Istriana. 



Philadelphia. — Proceedings of the Philadelphia Academy of 

 Natural Sciences. 

 ,, Proceedings of the American Philosophical Society. 



Pisa. — Atti della Societa Toscana di Scienze Naturli. 



PuRA, Bengal. — Imperial Department of Agriculture. 



Rio de J.vniero. — Archivos do Museu Nacional do Rjo de 

 Janiero. 



