( 239 ) 



Address delivered at the anniversary meeting of Ihc geological 

 Society of London. On the 20 Th. of February , \ 852 ; prefaced 

 by the announcement of the award of the Wollaston palladium- 

 medal and proceeds of the donation fund for the same year, by 

 William Hopkins. Londres, 1852; 1 broch. in-8. 



Fauna anliqua sivalensis , being the fossil zoology of the se- 

 walik hils, in the north of India. By Hugh Falconer and Proby 

 E. Cautley. Letter-Press. Part. I. Illustrations. Part. I 

 to IX. Londres, 1846 a 1849; 9 broch. in-folio et 1 broch. 

 in-8. 



On the Electro- chemical polarity of gases. By W.-R. Grove. 

 Londres, 1852; 1 broch. in-4. 



The american journal of science and arts, conducted by pro- 

 fessors B. Silliman, B. Silliman Junior, and James D. Dana. 

 Second series. N os 41 and 44. New-Haven ; 2 broch. in-8. 



ERRATA. 



(TOMK xx, PREMIERE r ARTIE.) 



Page 152, ligne 32, au lieu de Farthergels, lisez : Folheryill, 

 Fathergdli, Fothergilli. 



155, 18, Nemophilla, Memophila. 



513, 8 el 9, Chaudrac, Chaudruc. 



