Scientific Intelligence. — Comparative Anatomy. 197 
localities, when the heat, humidity, nourishment, &c. are differ- 
ent. Hitherto but little attention has been paid to those local 
differences ; hence it has happened that new species have been 
proposed, which were only varieties of known species. This 
fact is of great importance in a geognostical point of view. 
21 . The same Fossil Species of Shells are associated with 
different suites of species in different localities. — The same 
species of fossil shell may occur in deposits situated at con- 
siderable distances from each other, but in these different 
localities the species are not grouped with the same set of 
species. It is also a matter of observation, that fossil shells 
of the same species are more and more numerous in diffe- 
rent basins of the same era of formation, the nearer these 
basins are to each other. In illustration of this latter fact, 
Basterodt informs us, that, of the 270 species which he found in 
the vicinity of Bourdeaux, but 82 occur in the depots of Italy, 
52 around in Paris, 21 in the tertiary basins of England, and 
only 17 in the basin of Vienna in Austria. 
22. Greater constancy of character and association in the 
Organic Remains in Old than in New Rochs. — The fossil or- 
ganic remains, in ancient depots or formations, exhibit more 
constancy in their characters, and in their associations in differ- 
ent localities, even when at great distances from each other, than is 
observed in the more modern formations. Thus, the same species 
of trilobite, and without any variety in form, & c. is found in the 
Transition limestone of France, England, North America, &c. 
Other fossil organic remains, with absolutely the same charac- 
ters, occur in the transition slate of Wales, Northumberland, 
Finisterre, Cotenten, Ardennes, Hundsruck, Hark, Mark, Co- 
lumbia, New York, Pennsylvania, Lake Oneida, in North 
America. 
COMPARATIVE ANATOMY. 
23. Dr Grant on the existence of the Pancreas in some species 
of the Cuttle-Fish Tribe . — Dr Grant lately read a paper before 
the Wernerian Society on certain glandular organs of the Loli - 
go sagittata , Lam., the most common species of Colmar of 
the Firth of Forth. These glands are situate at the lower and 
