THE SCANDINAVIAN MOUNTAINS. 111 
pyramids were built; it has carried with it sand, gravel, and 
stones, which naturally must have caused abrasion ; but after 
ages of time this has not been great enough at any place to have 
lessened the distinctness of the boulder-furrows. From this 
their evident and unaltered condition we seem justified in re- 
ceiving them, not as belonging to monuments of later times, but 
as those which must be ascribed to a remote age. 
Nevertheless they are of later date than the Swedish geologi- 
cal formations of transition sandstone and lime in Eastern and 
Western Gothland and Dalecarlia, more recent than the trap of 
the West Gothland mountains, the porphyry in Dalecarlia, and 
the red sandstone formation (Keuper-bildningar) at Omberg, 
since all these in part show traces of furrows, and in part are 
found as fragments among the boulders. I am not aware if the 
green sandstone and chalk in Scania are more recent* than the 
furrows. 
§ 6. 
Have our mountains been changed in their position, elevated or 
depressed, since the Petridelaunian furrows have been formed ? 
This question I proposed to myself from the first commence- 
ment of my observations, and my particular attention has thus 
been drawn to it. No satisfactory solution, however, has been 
obtained. If we examine the mountains which lie in the neigh- 
bourhood of Fahlun, both easterly and southerly, and as high 
up as Sarna church (above 1500 Swedish feet), we find no rea- 
sonable grounds to suspect that they have been displaced from 
the position in which they were when the boulder-stream passed 
over them ; for so far as I have hitherto been able to investigate 
the direction of the side-furrows, it everywhere agrees with them. 
However, this needs a more accurate examination upon those 
mountains which on all sides have furrowed slopes, or which lie 
in any way isolated. In the mean time we may conclude that if 
some change had taken place, several combined localities must 
have been elevated above their former level, for neither large nor 
small fissures or faults are to be found. Older fissures which 
are filled with trap often appear, but the trap is furrowed. 
South of Bréms, on the boundary between the districts of 
[* On this subject the reader is referred to Mr. Lyell’s paper on the islands 
of Seeland and Moen, in the Geol. ‘T'rans., 2nd Series, vol. v. pt. 1, in which 
the boulder formation of the Baltic is shown to overlie the chalk of Seeland and 
Méen.—Ep.] 
