E. J. Pictet on the Diluvian Period. 347 
inquire afterwards what differences exist between the Diluvian 
fauna and the present fauna and shall show that they consist 
only in the disappearance of a limited number of the larger 
species. 
epoch, : 
I ought, as I have said, to demonstrate in the first place that 
all the present faunze have existed from the commencement of the 
diluvian period, as well as the last species, of which I shall speak 
farther on, For this purpose I have recently arranged a com- 
plete catalogue of the fauna of European mammifers, and I have 
inquired which have not been found in the fossil state, and what 
are those the bones of which have been found buried in the 
uaternian or Diluvian beds, with the fossil elephant, Hlephas 
Primigenius or with the Cavern Bear, Ursus speleus. 
oning upon comparable and sufficiently certain facts, I 
have excluded from this list: 
Ist, Marine mammifers in view of the difficulty of determining 
the age of marine Quaternian deposits. 
2d, Mammifers of remote regions whose bones are not likely to 
be found in the more explored and better known diluvian de- 
Posits of Central Europe. Thus I have not considered as impor- | 
tant either the monkey of Gibraltar, or the small species on the 
confines of Asiatic Russia, or those which have been recently 
iscovered in Sicily or in Turkey. I have confined myself to 
tually living in places where the Quaternian deposits 
are well known. Besides this, the excellent work of Eichwald 
