392 THE FOSSILIFEROUS 
Plesiosaurus, a well-marked chelonian femur, — shells, both 
marine and fresh-water, such as Unio Planorbis Paludina, — 
what seem to be an Astarte and a small Ostrea,— and whole 
strata formed of a minute Cyprus. ‘There are appearances 
connected with the Linksfield deposit that date from a compar- 
atively recent period, which are at least as extraordinary as 
aught that the beds themselves contain. They form there a 
small hill, about from forty to fifty feet in height, and several 
hundred feet in extent either way ; while beneath lies a thick 
deposit of the Old Red cornstones, wrought in this locality for 
lime. Interposed, however, between this hill of the Weald and 
the calcareous cornstones, there is a bed of the ordinary boul- 
der clay of the district, charged not only with the fragments of 
the rock on which is lies, but also of the well-marked Wealden 
strata which overlie it; and, more curious still, the cornstone 
bears on its surface, so far as the quarriers have yet penetrated, 
the ordinary glacial markings characteristic of the boulder clay. 
It would seem as if during the glacial period this hill had been 
so shifted or raised from its foundations, that the agent, what- 
ever its nature, which during the icebergal period dressed and 
grooved the rock-surfaces of the country, was enabled to dress 
and groove the cornstone on which the hill now rests. The 
appearances, — suggestive of the operations of some incalcula- 
bly enormous force, — are suited to remind one of that sublime 
simile employed by Milton, in describing the effect of the stroke 
under which the rebel angel reeled and fell : — 
“As if on earth 
Winds underground, or waters forcing way 
Sidelong, had pushed a mountain from his seat, 
Half-sunk, with all its pines.” 
With these detached outliers we take leave in Scotland of the 
Secondary formations, in their character as original deposits, 
* 4s 
