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the bones. The bones, he says, are decomposed, and very white : 
they, however, are not wanting in hardness, and may be even considered 
as petrified. The enamel of the teeth is unaltered. The impressions 
of shells are those of land-snails : there are no traces of sea-shells. 
M. Cuvier is satisfied, that among the considerable number which 
he possesses of these fossil bones, there are none but the bones of a 
ruminant, hardly of the size of a deer. These, from there not having 
been any horns or branches found, and from the lower head of an os 
femoris, which he possesses, resembling that of the antelope more 
than that of the stag or sheep, he is disposed to refer to the antelope. 
In the propriety of this, he is confirmed by the appearance of the 
teeth, and of the other bones which he possesses. 
It does not appear that any remains of any of the class of rosores 
( rongeurs , mammiferes onguicules sans dents canines ou laniaires) 
have been found in this rock, except by M. Adrian Camper, who has 
two halves of a jaw, and some other bones, which appear to be refera- 
ble to the genus Lepus, but which are too small for the common rabbit. 
Having ascertained that the remains of a species of Lagomys exist in 
the breccia of Corsica, and that the jaw-bones were about the same 
size with the one found at Gibraltar, he proposes, as an interesting 
object of research, the ascertaining whether traces of any animal of this 
species are discoverable in the brecciae of the rock of Gibraltar. 
In the breccia of Cette, M. Cuvier discovered the bones of five dif- 
ferent species of animals ; those of the common wild rabbit, and which 
were most numerous ; of a rabbit one third smaller than the preceding ; 
of an animal resembling the field-mouse (mas arvalis ); of a bird of 
the size of the common wag-tail ; and of the common adder. It is, 
however, by no means certain that the fossil rabbits were in their 
exterior similar to ours ; since those differences, which mark the 
rabbit of Egypt and of North America as distinct species, are not dis- 
coverable in their osteology. 
Learning that M. Gouan possessed an os femoris from Cette, which 
