208 X>r. Maton's and Mr. Rackett's 
The ." Zooloma Adriatica' of the Abbe 
"»■ 
OLIVI 
deserves a place among Conchological performances, for it con- 
tains a very scientific account of all the shells found in the Gulf 
of Venice. This author makes known seven new species, which 
are Avell figured, and very fully described. 
It was not reserved for the anatomist alone to illustrate the 
physiology of the testaceous tribe, for chemistry now began to 
lend its aid towards extending and improving this interesting sub- 
ject of inquiry. In the Ann. de Chimie we find 
M. VAUQUELIN 
treating of the respiratory process in the Helix Pomatia. This 
eminent chemist proves, in the course of his observations, that 
the Vermes require vital air for the excitement of their pulmonary 
system as well as other animals, and that they cannot live with- 
out it. But the most curious fact is, that the species above men- 
tioned will respire azotic and carbonic acid gas as long as any 
oxygen remains combined with either; — whence M. Vauquelin is 
induced to think that this Helix may be a good eudiometer. 
The Journal d'Hlst. Nat. for the same year contains an article 
entitled " Observations Bur la Generation des Buccins d'Eau douce," 
from which observations 
M. RIBAUCOURT, 
the writer of them, is induced to conclude that all the species of 
that tribe are viviparous. The second volume of that instructive 
work has the anatomy of Patella vulgaris, which is written by 
M. CUVIER, 
and illustrated by a plate, representing both the animal and the 
shell in various points of view. This very able comparative ana- 
tomist 
