228 [July, 1847. 



posuit atque descripsit Laur. Theod. Gronovius, J. U. D. 



Folio. 1781. 

 Musgeum calceolarianuni Veronense ab Andrea Chiocco, 4to. 

 Jacobi Breynii Opera: (viz., Fasciculi rariorum planta- 



rum ; Icoues et descriptiones rariorum plantarum : J. 



P. Breyni Jacobi filii dissertatio botanico-medica de radica 



Ginsem, seu Nisi, et Chrysanthem Bidente Zeylanico ac- 



mella dicto : Epistola de Melonibus petrefactis Montis 



Carmel; Dissertatio pliysica de Poly thalamus.) 4to. 1739. 

 Descriptiones Tubulorum Marinorum, &c, secundum disposi- 



tionem Musei Kleiniani. 4to. 1781. 

 Ueber den innern bau der sec und einiger anslandischen erd 



und Flussclmecten. Ein bersuch von Johann Samuel 



Schraster. 4to. 1783. 

 D. Joh. Fr. Blumenbach's Handbuch der Naturgeschichte. 



12mo. 1799. 

 The Conchologist's Book of Species, containing 600 species 



of Univalves. By Sylvanus Hanly, B. A. 2d edition. 



8vo. London, 1842. * 

 Kritisches Register zu Martini und Chemnitz's Systematis- 



chem Konchylien-kabinet von Dr. E. Pfeiffer. 8vo. 1840. 

 British Marine Conchology : a descriptive catalogue of the 



Salt-water Shells of Great Britain. By Charles Thorpe. 



12mo. London 1844. 



Letters were read : 



From Dr. Wm. A. Bromfield, dated June 25, 1847 : from 

 Wm. H. Edwards, Esq., dated New York, 29th June, 1847 ; 

 from George N. Lawrence, Esq., dated New York, 28th June, 

 1847 ; and from Major Geo. A. McCall, U. S. A., dated 

 Philadelphia, July 2d, 1847, severally acknowledging the 

 receipt of their notices of election as Correspondents. 



From Col. J. J. Abert, U. S. Topograph. Engineers, rela- 

 ting to an Aerolite, which fell on the 25th of Feb. last, nine 

 miles from the town of Marion, Iowa ; and enclosing a frag- 

 ment of the same. 



