Xill. 
March 23d. 
Introduction to Algology: with a Catalogue of American Algz 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. 
Svo. 
Géologie appliquée aux Arts et 4l]’Agriculture. Par MM. C. D’Orbigny et 
A. Gente. S8vo. 
Das Orientalische Pferd und das Privat-Gestute Sr. Majestat-des Konigs von 
Wurtemberg. Von Dr. A. Jaeger. S8vo. 
Nouvelles observations sur les Abeilles. Par Francis Huber. 8vo. 
Letters, Literary and Political, on Poland. 8vo. 
The Natural History of Animalcules. By Andrew Prichard. 8vo. 
Microscopic Illustrations of Living Objects, &c. By A. Prichard. 3d ed. 8vo. 
Petrifactious and their Teachings. By G. A. Mantell. 8vo. 
A Manual of Ornithology of the United States and of Canada. By Thomas 
Nuttall. 2 vols. 8vo. 
Lettres a Julie sur l’Entomologie. Par M. E. Mulsant. 2 vols. 8vo. 
Lehrbuch der Vergleichenden Anatomie von v. Siebold und Stannius. Vols. 
1 and 2. 8vo. 
A Manual of Entomology, from the German of Dr. H. Burmeister. By W. E. 
Shuckard. Nos. 1—12. 8vo. 
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 tiber die Entwickelungsgeschichte der Fische nebst einem 
Anhange tiber die Schwimblase. Von Dr. Karl Ernst von Baer. 
Thesaurus Literature Botanice omnium Gentium. Curavit G. A. Pritzel. 
Fascic. 1—6. 4to. 
Mittheilungen aus dem Gebiete der Geologie und Palwontologie von Dr. A.v. 
Klipstein. ie. Band. Ato. 
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 Schwangern 
und Nicht-Schwangern Zustande. Von D. J.C.G. Joerg. Folio. 
Note sur un cas de communication entre l’artere pulmonaire et l’aorte des- 
cendente. Par M. le Dr. Ch. Poelmann. 
Essai sur les Lamellicornes des Environs d’Amiens. Par M. Garnier. 
Museum Adolphi Frederici Regis, in quo animalia rariora imprimis et exotica 
describuntur et determinuntur a C. Linnxwo. Folio. 
Dominici Cyrilli, M. D. Entomologia Neapolitane specimen primum. Folio. 
Delicie Nature selecte. Von Georg. Wolfgang Knorr. 2 vols. Folio. 
April 6th. 
Sitzungsberichte der k. Akad. der Wissen, Mathemat-Naturwissen. Classe. 
Vol. 6, Vol. 7, parts 1 and 2. 8vo. 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 Mining 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. 
