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Earl Compton on the Rocks of the Isle of Mull, 
perhaps not half so high. To the westward they are not entirely 
basaltic. Accompanying this account is a drawing of one part of 
the coast, PL 19, fig. 2, where are seen irregular strata of free-stone 
and green sand, surmounted by a very regular row of basaltic 
columns ; at the foot of the rock is a talus covered with grass. 
I have named the strata as they appear to the eye, for I believe 
they are inaccessible. I should suppose that the summit of the 
columnar range may be about one hundred and fifty feet above the 
base of the rock. I believe these rocks are higher behind the 
columns, though I was too near to ascertain the fact. The name 
of this rock is Stona Buoch. On the shore appear limestone rocks 
containing anomise, belemnites, and other fossils. 
At one spot, about a mile and a half from Carseg, there is a rock 
coming forward at about a right angle with the rest of the coast, 
shaped like a wall or dyke, and about twelve or fifteen feet in 
thickness. This rock is formed by two strata, dipping considerably 
to the north, the upper one being sandstone; but my memoranda 
do not state what is the lower stratum. 
This rock is called Bidda vich Archesh. The meaning of this 
name I have not been able to learn, but mention it, as I have done 
other names, to assist others to find the rock. In spelling the 
word, I have followed the pronunciation as nearly as possible. 
At a considerable distance further on, is another small rock of 
two strata, standing on the talus of the main coast. The lower 
one basalt, the upper one green-sand-breccia. The name of this 
rock is Clach na Neigan, meaning, as I am told, stone of nails, 
alluding probably to the angular pieces of flint imbedded in the 
green sand. On the top of the main rock, which is very high, 
stands one resembling a square castle, and called Bidda na Neain, or 
the Pinnacle of Birds. I conceive it to consist of basaltic columns, 
