Dr. Berger’s Account of the Isle of Man . 503 
From the position in which the trees are said to lie in the 
curraghs, it would appear probable that some overflowing of the 
sea, in a direction from south-west to north-east, took place at a 
very distant period, but the few observations I made on certain 
banks of diluvium in various parts of the island do not countenance 
this idea. Some of these occur along the road from Peel to 
Douglass, and thence towards Laxey. They are generally composed 
of gravel and sand, and contain rolled blocks of various descriptions 
and sizes disposed in horizontal or wavy lines. Those about 
Douglass contain, principally, fragments of quartz and clay-slate, 
but further north we meet with a few blocks of granite, at 
Laxey, with very many, and between Laxey and Dun, the stone 
fences, which have been collected from the fields in the neigh- 
bourhood, are composed of little else. This granite is of the same 
appearance with that at Dun, and though dispersed so abundantly 
to the south of that place, I did not observe any towards the north. 
In an undisturbed bank of diluvial detritus at Clovenstone, I found 
a large block of quartz traversed by crystals of actinolite similar to 
those met with at Dun, and another block in a similar situation 
about two miles to the west of Douglass. 
Blocks of granite, similar to that of Slieu-ny-Clough lie dispersed 
for two miles over the low plains between St. Mark’s chapel and 
South Barrule, nor have they the least appearance of resting on 
their birth-place, so that no cause appears so likely to have placed 
them there as that which scattered those of Dun. This disposition 
of the granite boulders appears to indicate a current having set 
over the country, (at least on the eastern side of the central chain) 
in a direction from north-east to south-w T est, or contrary to that 
pointed out by the alleged disposition of the bog trees. 
Beyond the northern extremity of the mountainous group the 
Vol. V. 3 s 
