OF THE SIVALIK HILLS, 



33 



their prototypes. It is only in the strata above the chalk* at Montmartre, 

 and the fresh water formation at Argenton where remains have been found, 

 which were considered by Cuvier as appertaining to the latter subgenera; 

 in these strata however the remains of animals of this description are scarce, 

 and in those still more superficial abounding in the remains of the larger 

 mammaha, in Mastodons, Hippopotami, &c., where we might naturally 

 expect to find the Crocodile, the remains of this family have hardly I 

 believe been found at all. 



Of the fossil Crocodile brought by Crawford and Wallich from Ava, 

 and figured in the London Geological Society's Transactions, the drawings 

 shew a much nearer approach to the living congenera, than had, up to the 

 period of that discovery, been found ; and although we are unacquainted with 

 the geology of the country from which they were brought, the new varieties of 

 the Mastodons, which appear to be common both to the Sivaliks and the 

 Irrawaddi deposits, may establish an identity between the two formations. 



In the Sivaliks we have upheaved alluvium ; or debris from the great 

 Himalayas upheaved at a considerable angle ; at those points especially be- 

 tween the Jumna and Ganges rivers where the shingle and sand are the most 

 developed, their appearance is similar to what we might imagine the beds of 

 the present rivers to exhibit, were they to undergo a similar convulsion. The 

 presence of the fossils has not been satisfactorily determined on the line 

 between the Jumna and Ganges ; those that have been already collected in 

 such great abundance are from the prolongation of the same line between 

 the Sutlej and the Jumna rivers. Up to the present time they have gene- 

 rally been collected from the slopes of the mountains, slips, water courses, 

 &c. They have been dug out near the village of Deoni in the Nahan Raja's 

 territory, but at this spot the position of the stratum from which they 

 were excavated, was not satisfactorily determined. In the Amb walla Pass 



* In the London clay the remains of either the true Crocodile or Cayman with the con- 

 cavo-convex vertebra are said to have been found, the species allied to C. d museau aigu, 

 vide Parkinson Int. Org. Rem. p. 387, and also the head of an Alligator in the London clay 

 of the Isle of Sheppey, found in 1832. 



I 



