420 



EMBRYOLOGY. 



D'Alton, Von Baer, Purkinje, Wagner, Wolfe, Rathke, Bischoff, Vel- 

 peau, Flourens, Barry, Leidy. 



PECULIAR MODES OF REPRODUCTION. 



Ehrenberg, Trembly, Rosel, Sars, Loven, Steenstrup, Van Beneden. 



METAMORPHOSIS. 



St. Merian, Rosel, De Geer, Harris, Kirby and Spence, Burmeister, 

 Reaumur. 



GEOGRAPHICAL DISTRIBUTION. 



Zimmerman, Miine Edwards, Swainson, A. Wagner, Forbes, Pennant, 

 Richardson, Ritter, Guyot. 



GEOLOGY. 



The Works of Murehison, Phillips, Lyell, Mantell, Hugh Miller, Agassiz, 

 D'Archiac, De Beaumont, D'Orbigny, De Verneuil, Cuvier, Brongniart, 

 Deshayes, Morton, Hall, Conrad, Hitchcock, Troost, and the Reports on 

 the various local Geological Surveys. 



Very many of the papers of the authors above referred to are not pub- 

 lished in separate treatises, but are scattered through the volumes of Sci- 

 entific Periodicals ; such as the 



Transactions of the Royal Society of London. 



Annals and Magazine of Natural History. 



Annales, and Archives, du Museum d' Hist. Naturelle. 



Annales des Sciences Naturelles. 



Wiegmann's Archiv fur Naturgeschichte. 



M tiller's Archiv. 



OKen's Isis. 



Berlin Transactions. 



Transactions of the American Philosophical Society. 



Memoirs of the American Academy. 



Journal of the Academy of Nat. Sciences, Philadelphia. 



Silliman's Journal. 



Journal of Boston Society of Natural History. 



