138 PROCEEDINGS OF THE AMERICAN ACADEMY 



Vapeur, et Description d'une Horloge Magneto-electrique. 8vo 

 pamph. Paris. 1852. 



Note sur les Observations faites a Cherbourg, pendant PEclipse 

 du 28 Juillet, 1851. 8vo. Cherbourg. 1851. 



Addition a un Memoire, sur les Oscillations du Barometre. 8vo. 

 Cherbourg. 

 Professor C. B. Adams. 



Catalogue of Shells collected at Panama, with Notes on their 

 Synonymy, Station, and Geographical Distribution. 4to. New 

 York. 1852. 



Contributions to Conchology. No. II. Hints on the Geographical 

 Distribution of Animals, with special Reference to the JMoUusca. 

 October, 1852. 

 Society of Sciences, Harlem. 



Extrait du Programme de la Societe HoUandaise des Sciences a 

 Haarlem, pour I'Annee 1852. 



Historische en Letterkundige Verhandelingen van de Hollandsche 

 Maatschappij der Wettenschappen te Haarlem. Erste Deel. 4to. 

 Haarlem. 1851. 



Natuurkundige Verhandelingen van de Hollandsche Maatschappij 

 der Wettenschappen te Haarlem. 8 und 9 Deel. 4to. Haarlem. 

 1853 und 1854. 

 American Association for the Advancement of Science. 



Proceedings. Sixth Meeting, held at Albany, N. Y., August, 

 1851. Published by the Liberality of the Citizens of Albany. 8vo. 

 Washington. 1852., 

 Hoioard Stanshury, U. S. A. 



Exploration and Survey of the Valley of the Great Salt Lake 

 of Utah, including a Reconnoissance of a new Route through the 

 Rocky Mountains. Printed by Order of the Senate of the United 

 States. 8vo. Philadelphia. 1852. 2 vols. Plates. 

 A. A. Gould. 



The History of New Ipswich, from its first Grant in 1736 to the 

 present Time, with Genealogical Notices of the Principal Families, 

 and also the Proceedings of the Centennial Celebration, September 

 11, 1850. By Dr. A. A. Gould. Boston. 8vo. 1 vol. 

 Sir Roderick Impey Murcldson, F. R. S. 



On the Meaning of the Term " Silurian System " as adopted by 

 Geologists in various Countries during the last Ten Years. From 



