OF TILGATE FOREST. 
329 
and characteristic bones liave been discovered in 
the strata of Tilgate Forest, which cannot have 
belonged to any of the animals above described, it 
would extend this paper to too great a length were I 
to notice them on this occasion. I would, how- 
ever, solicit })ermission to offer a few' remarks on 
what has been advanced. It has been shown that 
the Wealden de])osits have afforded the remains of 
several species of crocodiles, and gavials ; of animals 
holding an intermediate ])lace between the lizards, 
and crocodiles, the H^lcposauruSy and Cj/lindri- 
codon ; and of the two colossal monsters of the 
reptile world, the Megalosaurus, and the Iguano- 
tlon : witli these are associated the remains of tor- 
toises, and turtles ; of river fishes, and river shells ; 
of plants which grew in marshes, and of others 
which grew on the land, and which, like the 
DraCcCna, and the Cycas, and the palms, and 
arborescent ferns, could not have existed but in 
a climate of a high temperature. I will not pre- 
sume, to rej)eat here, the observations which I 
formerly made on the probable condition of the 
country which produced such a fauna and flora, 
and through which the river flowed that brought 
down and deposited the remains which ofler such 
an inexhaustible field for geological enquiry. Yet 
I may be permitted to state, that all which I have 
since observed has served to confirm me more 
and more in the opinion, that the strata of the 
M'ealden were a vast tlelta formed by some mighty 
river, and that the few marine stragglers which oc- 
cur serve to sup})ort rather than to weaken such a 
hv})othesis. But I do not think tliere is reason to 
