572 
lull side, and runs out in half-obsolete moraine-like masses in 
every valley. It varies according to the nature of the rocks 
on the hill sides along which a glacier, flowing in the country 
after it had assumed nearly its present configuration, must 
have come. To trace one, for instance, a great glacier 
coming down from Bavenstonedale, between the Howgill 
Fells and Wild Boar Fell and Baugh Fell, crossed the end 
of Garsdale, over to Dent, and was split on the corner of 
Holme Fell, where, perhaps, it scooped out the great hollow 
called Combe Scar ; part went down the Barkin Beck, and 
part down the Dent and Sedbergh valleys ; the hill range 
called the Biggs being a mere roche moiitonnee in its path. 
We can trace its action all along the north side of Holme 
Fell, carving out deep grooves which first coincide with the 
bedding, then, where the valley narrows, and the glacier was 
squeezed up, were cut oblique to the beds, and, at the lower 
end of the ridge, fairly turned over the corner into the valley 
of the Lune. When the rock has recently been bared, the 
smaller strive are found to agree with this. At the north- 
west corner of Holme Fell, we see them curving over in the 
same direction as the great grooves I have been describing. 
At the south end of Casterton Low Fell, the tributaries from 
the E. and N.E. forced the Barkin Beck branch of the 
glacier over the low end of the hill. Again, when there was 
a glacier coming down into the Lune valley from the IN"., 
the Sedbergh glacier must have pushed it out to the W., and, 
agreeing with this, we find the valley of the Lune cut far 
back opposite the mouth of the Sedbergh valley. 
As the climate grew warmer, and these glaciers were 
receding, they left their debris, as moraine matter, scattered 
over the undulating country they once occupied. Now, of 
what is this composed ? and how does the evidence we get 
from the rocks found in the drift agree with that derived 
from the shape of the country and the direction of the striae ? 
