LD SEFSTROM ON THE FURROWS WHICH TRAVERSE 
Calmar and Blekinge, I observed a phenomenon which ap- 
peared to be an exception to the before-mentioned hypothesis. 
The road goes there for a great way over level slabs of granite, 
on which furrows are not visible, for the granite is too coarse- 
grained to receive them; however, by observing the opposing 
and the lee-sides, the direction of the furrows may in some mea- 
sure be determined. It is at least certain that the surface has 
been worn away by the force of the boulder-flood. But the sur- 
face of the slabs do not lie successively, but are broken, and 
the pieces which had lain together during the attrition he now 
with their sides irregularly elevated or sunken, much in the 
same manner as pieces of ice formed at high water, but the 
water having fallen the ice rests on an uneven bottom. From 
this no other conclusion can be drawn than that the displace- 
ment has been occasioned by some subterraneous cause. Going 
further to the west, approaching the church of Loésen, there are 
seen, about two hundred steps from the road by a small cottage, 
some rocks of a very peculiar form. Investigating these more 
closely it will be found that they are all pieces of a large slab 
which has been furrowed on the surface; and that this slab, 
by a horizontal fissure, inclining somewhat towards the north, 
has been separated from the rock beneath. It is also soon 
discovered that this slab has been, by a shock from the north, 
removed a little further south, and that it has partly been crushed 
to pieces by the shock, and partly gone asunder by its own 
weight upon the uneven bed underneath. Something of the 
kind must also have been the case with the before-mentioned 
rocks, the removal of which does not thus proceed from one of 
the subterranean powers of the earth, but from an external one. 
Assuming the hypothesis, that our mountains, considered singly, 
remain unremoved after the boulder-flood, it would not be al- 
tered by the observations at Bréms. 
What, on the contrary, relates to the changes of level on a large 
scale as yet remains still more dubious. Mr. H. Wegelin, who 
has made various investigations with respect to the Petridelaunian 
phznomenon, and has extended them even to the mountains 
bounding Norway, Herjeadalen and Dalecarlia, has since com- 
municated to me the observation, that the mountain ridges in 
these places do not consist of any fixed continuous strata, but of 
a mass of large and small pieces of rock which have sharp edges, 
and therefore have never been rolled, but were all rent asunder 
al 
