-g Mr. Mills’s Obfervations on 
N.W. part of the ifland is very rocky, affording little pafture, 
except in feme low fpots, where the loll is Tandy, and produces 
not only grafs, but likewise corn and potatoes. The whole 
extent of the ifland is three miles in length N E. and S.W. 
and one mile in breadth ; and it intirely confifts of alternate 
barren crags and little fertile vales. 
Having engaged a boat with four rowers, we went from 
Icolmkill through the Bull Sound, which runs between Nun’s 
Ifland and the ifland of Mull ; on both (ides the cliffs are of red 
granite, ragged and broken, without any regular beds or fif- 
fures, and having no particular range or inclination. Hence 
we fleered for Ardlun Head, which forms the S.W. point of 
Loch Leven. When we approached the Head, we flopped 
the rowers, and fat fome time contemplating the wonderful 
arrangement of the bafalt columns ; and, as we again rowed 
along fhore to the eaftward, had a fine view of the various 
fituations into which the columns were thrown. The coaft 
being every where fteep, it was fome time before we could find a 
convenient place to land , but having at laft got on fhore, we 
walked to the extreme point or head : here, ftruck with the 
errors of our maps, which placed the iflands in fight very dif- 
ferently from their true fituations, I took the following bear- 
ings by the compafs. 
TheN.E. point of Iona N.W. by W.—TKe Dutchman’s Cap 
N.N.W. — Cairnborough N. by W.— Staffa from N. to N. i W. 
diftant, by eftimation, about three leagues. — Rhu Thalve, the 
northernmoft extreme of Mull, N. by E, — Inch Kenneth 
N.E. i N. — The point of Ben Vawruch, on the north fide of 
Loch Leven, N.E. diftant, by eftimation, three miles. — The 
range of Loch Leven E. by S. and W. by N. 
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