Journal of Science.* Of these we are acquainted with Fixoglos- 
sum alone, which is founded upon natural characters, and isa 
good genus. ‘ 
Without knowing their precise date, we will here notice a se- 
ries of articles from vols. 5, 6, and 7 of the An. Gen. des Sci. Phys., 
published at Brussels. Ours is a detached set, and we may there- 
fore have omitted other articles from the same wotk. , 
Prodrome d'une Monographie des Turbinolies du Kentuky, 
_ par C. S. Rafinesque et J. D. Clifford. Five sub-genera and six- 
Aas ' 
~~ teen species are described. 
Monographie des coquilles bivalves et fluviatiles de la riviére 
Ohio, (with figures.) As Rafinesque was the first to make known 
the greater part of the westeri Unios, it is but fair that those who 
study this genus, should exert themselves to identify his species. 
They are surrounded by fewer difficulties than those of Linneus, 
yet there is little doubt respecting the latter, and as Rafinesque 
sold examples of his species to any one disposed to purchase, he 
Certainly must be credited with the disposition to afford every as- 
sistance. The most complete collection of authentic specimens 
how existing, is that of Mr. Poulsont of Philadelphia, who also 
possesses many of Rafinesque’s unpublished MSS. and drawings.f 
Most of these species are, in fact, so well established, that it is a 
mere affectation to assert that they cannot be identified. The 
greater part of Mr. Swainson’s sub-genera of American Unios in 
the Cabinet Cyclopedia, were previously indicated by our author. 
‘he same paper contains a division of the genus Cyclas into sub- 
genera, but without any notice of Pisidium. 
_ Sur les animaux polistomes et porostomes. The former are 
: Zoophytes, the latter Infusoria, which with the older authors, he 
Supposed to take their nourishment by means of pores, whence 
the name. As an example of the style, we transcribe a few of 
the introductory observations. “ Des erreurs accreditées pas des 
Savans illustres, admises tacitement comme des vérites démon- 
trées par la foule des copistes et des esprits superficiels qui se con- 
tentent de croire sur parole, sont bien difficiles a dctruire ; néam- 
EET gt ae ee ee 
* Several reptiles are described here, also. 
t Our cabinet contains three shells not in Mr. Conrad's list, viz. Unio pallens, 
Metaplatos and bicolor; the last is a variety of U. dilatatus, Raf. Mr. P. is so liber- 
wie he gives every facility to those who wish to consult his fine collection and 
Ty. ' 
t We have a considerable number of these. 
