Xlll. 



March 23(1. 



Introduction to Algology : with a Catalogue of American Algae or Sea-weeds. 

 By John Hooper. From the Author. 



Notice of the origin, progress and present condition of the Academy of 

 Natural Sciences of Philadelphia. By W. S. Ruschenberger, ]M. D. 



Mr. Edward Wilson presented the following, on the usual condition : 



The Microscopic Cabinet of select animated objects. By Andrew Prichard. 

 8vo. 



Geologic appliquee aux Arts et a I'Agriculture. Par MM. C. D'Orbigny et 

 A. Gente. 8vo. 



Das Orientalische Pferd und das Privat-Gestute Sr. Majestat-des Konigs von 

 Wurtemberg. Von Dr. A. Jaeger. 8vo. 



Nouvelles observations sur les Abeilles. Par Francis Huber. Svo. 



Letters, Literary and Political, on Poland. Svo. 



The Natural History of Animalcules. By Andrew Prichard. Svo. 



Microscopic Hlustrations of Living Objects, &c. By A. Prichard. 3d ed. Svo. 



Petrifactions and their Teachings. By G. A. Mantell. Svo. 



A 3Ianual of Ornithology of the United States and of Canada. By Thomas 

 Nuttall. 2 vols. Svo. 



Lettres a Julie sur I'Entomologie. Par M. E. Mulsant. 2 vols. Svo. 



Lehrbuch der Vergleichenden Anatomic von v. Siebold und Stannius, Vols. 

 1 and 2. Svo. 



A ^Manual of Entomology, from the German of Dr. H. Burmeister. By W. E. 

 Shuckard. Nos. 1 12. Svo. 



Beitrage zur Naturgeschichte der Turbellarien. Von Dr. Max. Sigmund 

 Shultze. 4to. 



Analecta Entomologica. Auctore J. W. Dalman. 4to. 



The Papilios of Great Britain. By W. Lewin. 4to. 



Adolphi Ed. Grube de Pleione carunculata dissert-zootomica. 



Untersuchungen liber die Entwickelungsgeschichte der Fische nebst einem 

 Anhange iiber die Schwimblase. Von Dr. Karl Ernst von Baer. 



Thesaurus Literaturae Botanicae omnium Gentium. Curavit G. A. Pritzel. 

 Fascic. 1 6. 4to. 



Mittheilungen aus dem Gebiete der Geologie und Palaeontologie von Dr. A. v. 

 Klipstein. le. Band. 4to. 



Disquisitiones de structura et textura canalium aeriferorum. Scripsit 

 Ernestus Shultz. 



Atlas of Dinotherium giganteum (Klipstein und Kaup.) 



Ueber das Gabaerorgan des Menschen und der Saugethiere im Schwang.ern 

 und Nicht-Schwangern Zustande. Von D. J. C. G. Joerg. Folio. 



Note sur un cas de communication entre I'artere pulmonaire et I'aorte des- 

 cendente. Par M. le Dr. Ch. Poelmann. 



Essai sur les Lamellicornes des Environs d' Amiens. Par ISl. Garnier. 



Museum Adolphi Frederic! Regis, in quo animalia rariora imprimis et exotica 

 describuntur et determinuntur a C. Linnaeo. Folio. 



Dominici Cyrilli, M. D. Entomologiae Neapolitanae specimen primum. Folio. 



Delicis Naturae selectae. Von Georg. Wolfgang Knorr. 2 vols. Folio. 



April 6th. 



Sitzun^sberichte der k. Akad. der Wissen, Mathemat-Naturwissen. Classe. 

 Vol. 6, Vol. 7, parts 1 and 2. Svo. From the Academy. 



Denkschriften 'der k. Akad. der Wissen., Mathemat-Naturwissen. Classe. 

 Vol. 2, pt. 1. Folio. From the same. 



Remarks on Entomology, chiefly in reference to an Agricultural benefit. By 

 Wm. D. Brinckle, M. D.^ From Dr. Elwyn. 



Report of the Mines and Lands of St. Lawrence iNIining Company. From the 

 same. 



Annals of the Minnesota Historical Society for 1852. From the Society. 



Ueber die fossilen Saugethiere Wurtembergs von Dr. Georg. Jager. From 

 the Prince de Wied. 



