on the Eildon Hills. 911 
diluvium containing angular fragments of greywacke and trap 
rocks. 
In the afternoon, Mr. Kemp kindly accompanied me on a 
hasty visit from Galashiels to Williamlaw. My time being 
limited and the evening advancing, he selected this hill as 
offering the best example of the terraces in the neighbour- 
hood, for he had traced, more or less distinctly, detached 
portions of no less than eight of the whole series, between the 
summit and the base. Two or three of the lowest of these 
(7, 8, and 9 of his series,) are the broadest and most continu- 
ous, averaging 100, 120, and 130 feet wide respectively about 
the middle, where they appear to be swollen out, narrowing 
irregularly on each side till they are lost in the general slope 
of the hill. These occur on the south side of the hill, and 
front the valley of the Gala. On one of them the surface is 
raised in the middle or widest part, and declines each way 
towards the narrower extremities at an angle of 3 to 6 degrees, 
a vertical longitudinal section having this form:— __ 
samme TMT . ie: | 
At first sight it appeared that both the greater width and the 
raised surface of the middle portion, might be caused by an 
accumulation of detritus from above; but on examination it 
was composed of the solid rock. On another, the central 
accumulation is so situated under a projecting rock, that it 
could not have found alodgement there in falling from above ; 
nor was there any trace of a furrow or ancient water-course 
which might have brought down diluvium, when this spot 
marked the level of the water. The natural slope of the hill 
in the neighbourhood of these lower terraces, forms an angle 
varying from 30 to 40 degrees. 
A little to the westward of these, and higher up the hill, the 
series of inclined projecting ridges of hard greywacke rock, 
which are named in the article referred to as apparently con- 
tradictory, but are really confirmatory of the theory advanced, 
may be seen to greater advantage than either nearer the sum- 
mit or the base. Regarding these, or rather the protuberances 
and intermediate indentations by which they are stated to be 
marked, as the experimentum crucis of the whole theory, I 
was anxious to satisfy myself of the coincidence of level be- 
tween these points and the horizontal terraces ; but after the 
best attention I was able to give, I regret to say, that whether 
from the unfavourable point from which I viewed them, with 
regard to perspective, or from the general ruggedness of the 
P2 
