160 FORESTRY OF NORWAY. 
Christiania fiord, the one in an almost direct line from 
Moss to Fredrickshald, the other in a line almost direct 
from Horten to a little below Larvick; the two form 
nearly equal angles with the direction of the Christiania 
fiord. Their lengths, about 45 kilometres, are also pretty 
nearly the same. But the striae produced by erosion 
show that these are two separate terminal moraines. The 
eastern moraine was formed by the continental ice coming 
from what is now the forest land of the Folloberge and 
Smalene; the second has been formed by ice coming from 
the Skrimsfjelde. The great roads of the kingdom tra- 
verse these ancient moraines, which supply excellent 
material for the construction of them. 
Small moraines may be seen in a line almost direct 
between Droebak and the south end of the Lake Oieren, 
at the end of Mandalsvand, near Christiania, at five kilo- 
metres from Christiania, across the railway to the Miosen 
lake, in some places through the valley of Lier; at the 
waterfall of Vestfoss, in Eker, fifteen kilometres beyond 
Drammen, on the low lands of Jederen, and near to 
many of the West fiords, Some banks of sand and rounded 
stones have a great resemblance to moraines, but are not 
such. They have been deposited, on the contrary, under 
the surface of the sea; the round stones do not present 
themselves pell-mell, as stones do in moraines, but in 
regular beds. One of these connects the Drammen fiord 
with Svelvik; higher up, near the Dramselv, a similar 
bank may be seen of more strange outline, and still higher, 
between Drammen and the waterfall of Vestfoss, the Ryg- 
kollen forms a third. 
The débris of moraines of the glacial period often cover 
great areas on the mountains. Erratic deposits, and trans- 
ported blocks, both great and small, are scattered every- 
where high and low on the summits of very high moun- 
tains, but not, however, on the highest. Thus they are 
found on many mountain summits on the borders of the 
Jotunfjelde, in Valders, and in Grunbrandsdal, but not on 
the highest of these mountains. These erratic deposits 
