s)*) 
RHINOCEROS TICHORHINUS. oo 
potamus.” Of the soundness of Grew’s determination, 
the reader will be able to judge by comparing the figure 
of the fossil (fig. 121) with that of the entire cranium 
of the Rhinoceros tichorhinus, which is placed above it, 
at the head of the present section. 
Two distinct rough surfaces (4 4) may be traced on 
the upper part of the fragment, shewing that the species 
of Rhinoceros to which it belonged was two-horned ; and 
the anterior surface rises towards its middle part, as if to 
form the longitudinal ridge, which there characterises the 
fossil species, and distinguishes it from the African two- 
horned Rhinoceros, which has a depression at the corre- 
sponding part of the skull. But more decisive evidence 
of the relationship of the Chartham fossil to the extinct 
Rhinoceros tichorhinus is attorded by the remains of the 
strong and thick bony wall which descended from the 
bones supporting the horns to form the partition between 
the two cavities of the nostrils, and give additional 
strength to that part of the skull. 
Cuvier concludes, from this peculiar structure of the most 
common extinct species of two-horned Rhinoceros of the 
northern and temperate regions of Asia and Europe, that it 
bore longer and more formidable nasal weapons than do any 
of the known existing species with two horns. In the 
Chartham fossil, a great part of the bony septum is broken 
away: it remains in the entire skull figured (fig. 120). 
The skull of the extinct Rhinoceros was relatively longer 
in proportion, and terminated forwards by a peculiar modi- 
fication of the nasal bones, which, by the medium of the 
thickened anterior part of the osseous partition-wall were 
anchylosed, or joined by a continuous bony mass, with 
‘the fore-part of the intermaxillary bones, or those that 
terminate the upper jaw. 
