184 [March 1847. 



Oken's Isis ; Encyclopsedische Zeitschrift vorzuglich fur Na- 

 turgeschichte, vergleichencle Anatomie und Physiologic 

 Hefts 1-8. 1846. From the same. 



The Dog : by William Youatt. Edited with additions by E. 

 J. Lewis, M. D. Philadelphia, 1847. From Dr. Lewis. 



Hybridity in Animals and Plants, considered in reference to 

 the question of the Unity of the Human Species. By S. 

 G. Morton, M. D. New Haven, 1847. From the Author. 



Literary Record and Journal of the Linnean Association of 

 Pennsylvania College. Vol. 3. No. 5. From the Associa- 

 tion. 



American Journal of Agriculture and Science. Conducted 

 by Dr. E. Emmons and A. Osborn, Esq. No. X. Feb. 

 1847. From the Editors. 

 The folkming were received from Dr. Morton, in exchange 



for fourteen Human Crania now in the cabinet of the Society : 



Fauna Boreali-Americana. By John Richardson, Esq., 

 F. R. S., &c. Part 1, Mammalia. Part 2, Birds. 4to. 

 London, 1829 and 1831. 



A Supplement to the Appendix of Captain Parry's Voyage 

 for the discovery of a North-west passage, in the years 

 1819-20. Containing an account of the subjects of Natu- 

 ral History. 4to. London, 1824. 



Ornitholcgia Suecica. Auctore W. Nillson. Pars prior. 

 8vo Havnise, 1817. 



Tentamen Systematis Amphibiorum. Auctore Blasio Mer- 

 rem. 8vo. Marburgi, 1820. 



Histoire Naturelle generale des Pigeons et des Galinacees ; 

 par C. J. Temminck. 3 vols. 8vo. Amsterdam and Paris, 



1813. 



Principles of Geology. By Charles Lyell, Esq., F. R. S. 

 4 vols. 8vo. 4th Edition. London, 1835. 



Dr. Morton read a comunication from the Rev. Dr. Bach- 

 man, of South Carolina, on the subject of Hybridity in Birds 

 and Quadrupeds. 



