198 CONCHOLOGIST S COMPANION. 
also found in Holy Island, the theme of legend and 
of song; are eagerly sought for by the sailors, who 
endow them with supernatural qualities. 
Many important conclusions result from a serious 
consideration of these extraordinary depositions of 
Testace. Cuvier has already proved, from the obser- 
vation of them in common with other organic remains, 
that the crust of our globe has been subjected to a 
great and sudden revolution, which buried all the 
countries before inhabited by men and animals. 
Who can look upon the surface of the globe, and 
refuse his assent to this? The sea, evidently, has not 
only covered our plains, but rolled above the highest 
mountains, where it must have remained for a long 
time in a state of considerable tranquillity ; how else 
shall we account for the formation of such solid, 
thick, and widely extended deposits, containing 
exuvie so perfectly preserved? especially, when it is 
obvious, that previous to the formation of the horizon- 
tal strata, others were deposited, which by some means 
have been broken, lifted up, and overturned in a thou- 
sand different ways. This extraordinary fact is accu- 
rately demonstrated to every one who will take the 
trouble of carefully observing the remains by which 
it is illustrated, and proved. 
The same enlightened geologist has also clearly 
shewn, that these eruptions of the great waters have 
