222 Cincinnati Society of Natural flisioty. 



Bv Exchange. 

 Acadeniia Nacional de Ciencias. Cordoba. 



Acte.s, Tomo V., Knt. terrera. 



Boletin, Tomo IX., Ent. i, 2, 3. 

 Academy of Natural Sciences. Philadelphia. 



Translations, 1886, Part III.; 1887, Parts I., II. 

 Albany Institute. Albany. 



Translations, Vol. XI. 

 American Academy of Arts and Sciences. Boston. 



Proceedings, Vol. XIV. 

 American Antiquarian. Clinton, Wis. Vol. IX. 

 American Association for Advancement of Science. 



Proceedings, Vol. XXXV. 

 American Geograj)hical Society. New York. 



Bulletin, 1885, Nos. 4, 5; 1886, No. 2. 



Vol XIX., Nos. I to 5. 

 American Journal of Science. New Haven. 



Vols. XXXIII. and XXXIV., 1887. 

 American Monthly Microscopical Journal. Washington. 



Vol. VIII., 1887. 

 American Museum of Natural History. New York. 



Annual Report, 1886-87. 



Bulletin, Vol. I., No. 8; Vol. II., No. i. 

 American Naturalist. Philadelphia. 



Vol. XXI., 1887. 

 American Philosophical Society. Philadelphia. 



Proceedings, December, 1886; Jan. to June, 1807. 

 Auk, The. Cambridge. Vol. IV., 1887. 

 Basel, Naturforschende Gesellschaft. 



Verhandlungen, Theil 8, Heft I. 

 Belgique, Societa Royale Malacologique. Brussels. 



Annales, Tome XX. and XXI. 



Proces Verbaux, Tome XV., Tome XVI., pp. i to 80, 

 Sraiuts de la Societa. 

 Bern, Naturforschende Gesellschaft. 



Mittheilungen, Nos. 1143 to 1 168. 

 Botanical Gazette, Vol. XII. 

 Botanical Society. Edinburgh. 



Transactions and Proceedings, Vol XVI., Part III. 

 Botanischen Yerein der Provinz Brandenburg, Verhandlungen. 



Vols. 1879 to 1885, complete; 1886, Parts r, 2, 



