EXCHANGES. 



LIBRARY. 



SCIENTISTS. 



C. E. BEECHER (the author), New Haven, Conn. 



Outline of a natural classification of the Trilobites. 1897. 



On the occurrence of Silurian Strata in the Big Horn Mountains, 



Wyoming, etc. 1896. 

 Development of the Brachiopoda. 1897. 

 The Systematic Position of the Trilobites. By J. S. Kingsley. 



1897. 



D. G. BRINTON (the author), Philadelphia, Pa. 



Native American Stringed Musical Instruments. 1897. 

 The So-called " Bow-Puller " Identified as the Greek. 1897. 

 The Missing Authorities on Mayan Antiquities. 1897. 

 The Battle and the Ruins of Cintla. 1896. 

 The Pillars of Ben. 1897. 



C. C. BRIMLEY (the author), Raleigh, N. C. 



Lists of Mammals of Raleigh, N. C. 1897. 



An Incomplete List of the Mammals of Bertie Co., N. C. 1897. 



W. E. CLARKE, Edinburgh, Scotland. 



Annals Scottish Natural History. Nos. 21-24. 1897. 



W. H. DALL (the author), Washington, D. C. 

 Pelecypoda. 1896. 



ANTONIO DE GREGORIO (the author), Palermo, Italy. 



Appunti intorno alia Salvia sclarca L. call' Ailanthas glandulosa. 

 1896. 



Appunti su talune Conchighe Estramarine Di Sicilia viventi e fossili. 

 1896. 



Fondo del mare dietro Monte Gallo. 1895. 



Fossili Di Talune Quarziti Di Piana dei Greci. 1896. 



Sur la terminologie des partes des coquilles de mollusques. 1891. 



Nei Dintorni Di Palermo. 1896. 



La Sicilia e Le Scienze Naturali. 1897. 

 Dr. JONATHAN DWIGHT, New York City. 



48 Odd Nos. of Journals on Natural History. 



WALTER FAXON (the author), Cambridge, Mass. 

 Supplementary Notes on the Crustacea. 1896. 



G. K. GILBERT (the author), Washington, D. C. 

 Laccolites in Southeastern Colorado. 1896. 

 Modification of the Great Lakes by Earth Movement. 1897. 

 Memoir of George Hamilton Cook, 1818-1889. 1897. 



A. R. GROTE (the author), Hildesheim, Germany. 



Beitrag zur Classification der Schmetterlinge. 



Die Nachtpfauenaugen, etc., 1896. 

 Prof. JAMES HALL, State Geologist, Albany, N. Y. 



Fourteenth Annual Report of State Geologist. 1894. 



