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considered to be moraines, more or less dispersed by the 
action of floods, such as would doubtless accompany the 
melting of large quantities of ice. Immediately above some 
of these supposed moraines, he found polish and stria on the 
porphyritic rock, near the summit of the hill, which he had 
no doubt was to be assigned to glacial action. For two or 
three miles up the valley, east of Blair Gowrie, there are vast 
longitudinal and insulated ridges of gravel, similar to lateral 
moraines, and there are equally evident traces of transverse 
or terminal moraines in the valley of the Lunanburn, to the 
west of that town. The mounds at Dimkeld Castle, forming 
part of the ornamented grounds — the detritus on the left flank 
of the valley of the Tay, in the valleys of the Tumel and the 
Garrie — all present the appearance of moraines, and are de- 
scribed in Dr. Buckland's communication to the Geological 
Society, read in November, 1840. In the same locality, 
numerous and very striking examples were also found of 
rounded and polished rocks, with flutings similar to those of 
which the plates of Agassiz's " Studies " convey so clear an 
idea. Two lofty ridges of gravel, near Taymouth Castle, 
cross the park at right angles to the sides of the valley, and 
are exactly similar in position and appearance to terminal 
moraines. A remarkable group of such mounds occurs on 
the high land dividing the valleys of the Tay and the Bran ; 
these are thirty or forty in number, and vary in height from 
thirty to sixty feet ; they are composed of unstratified gravel 
and boulders. These, Dr. Buckland observes, cannot be 
ascribed to the action of water, as they are placed precisely 
where a current of water, descending from the adjacent high 
lands, would have acted with the greatest velocity ; and they 
exactly resemble the moraines in the valley of the Rhone, 
between Martigny and Loek. 
In Strath Earn, the valley is flanked with ridges and ter- 
races of gravel, and numerous rocks are rounded and guttered. 
R 
