296 
VERTEBRiE OF THE REPTILES 
concavo-convex, were reversed, the convexity 
being placed forwards, instead of backwards. M. 
Cuvier has figured and described several dorsal and 
caudal vertebrae from Tilgate Forest, which possess 
the first-mentioned characters ( Oss. Foss. tom. v. 
pi. X. figs. 28. 31, 32, 33, 34.), and has approxi- 
mated them to the fossil crocodile of Caen. That 
to follow in the steps of the immortal founder of 
fossil comparative anatomy is the only method by 
which we can obtain clear and satisfactory results 
in these investigations, no one can feel more per- 
suaded than myself ; yet, in the present instance, I 
am compelled, though with the utmost diffidence, 
and with feelings of respect amounting to vene- 
ration for the opinions of that illustrious philoso- 
pher, to hesitate in assigning all these vertebrm 
to the Crocodiles or Gavials, since, as will here- 
after appear, the portion of the skeleton of a reptile 
on the table has similar vertebrae associated with 
VERTEBRAE OF REPTILES FROM TILGATE FOREST. 
1. Crocodilian type. 
2. Tguanodon. 
.3. Plano-concave. 
I. Concavo-convex, of the laccrtian tvpc. 
