Letter from Dr. Wm. Meade. 161 
tinctly its yesterdays site, whilst its track across the flat 
oozy sand was very perceptible, extending in a line from 
its old to its new situation. In addition to these partic- 
ulars I have since learned from my friend Mr. Bradie that 
he visited the stone the day after, when he found all the 
traces remaining quite apparent and an extensive cake 
oh ice adhering to the stone being attracted to its outer 
4 
ee rise geet oer le Naas y H j 
It is evident that this vast mass of stone must have been 
so far rendered specifically lighter than the water by the 
great cakes of ice within which it was bound, and by which 
it was supported, as to be in some degree buoyed up, and 
that whilst in this state, it was carried forward by the out- 
going tide, assisted by the impelling force of a tremendous 
hurricane blowing in the same direction. . 
By the correspondence just detailed, we are furnished 
with a comparatively recent and perfectly well attested 
example of one mode by which large masses of detached 
rock may be carried to considerable distances. For al- 
ihough the waters of the tide which fill the bay in question, 
were on account of their shallowness, incapable of buoying 
up the extensive float of ice supporting the stone so per- 
fectly as to prevent the keel of it from ploughing the sand 
in the course of its ress over it, yet there is no reason 
to doubt if it had been once fairly carried into deeper 
ay 
even conceive it probable that the stone might have been 
deposited upon some remote shore, where no rock of the 
same nature was to be found, and where it might have fur- 
Vor. VI.—No. 1. 91 
