697 
of Edinburgh, Session 1877 - 78 . 
Mr Young then refers to the Strathblane Valley, which lies 
between the north and south hills of Campsie, and to the appearances 
indicating that it had been “ swept by powerful currents of water , 
which have helped to produce those inequalities of surface seen 
along the outer margin of the tracts now occupied by the rivers 
Kelvin and Glazert. It was during the period when Scotland sat 
several hundred feet lower in the sea than it does at present, and 
when the valley of the Kelvin existed as a deep sound connecting the 
German and Atlantic Oceans , that those great beds of stratified 
sand and gravel were deposited which we now see filling up the 
Strath (as near the village of Torrance) to more than 100 feet above 
the level of the river. At other points along its course, similar 
deposits exist to more than 100 feet beloiv the present sea-level. 
This shows that a very deep sound or valley must have originally 
extended across Scotland, previous to the glacial period, in this parti- 
cular direction. A depression of the land to the extent of 350 feet 
would produce the following results : — The German and Atlantic 
Oceans would be united by the valley of the Kelvin, also by the 
valley of the Leven, Loch Lomond, and onwards by the low ground 
near Ivippen to the Forth at Stirling. A narrow sound through the 
Campsie valley would connect the two seas, as the water-shed at 
Ballagan Bridge is only 330 feet. The Campsie and, Kilpatrick 
hills would then form two islands, and the valleys of the Carron and 
the Endrick would be estuaries or arms of the sea. It is only by 
assuming conditions such as these, that we can hope to explain the 
superficial sedimentary deposits” (page 16). 
In the year 1871, in company with Mr Young, I had an oppor- 
tunity of visiting the Campsie district, and from my note-book I 
make the following extracts : — 
a. On Craigend moor, at about 450 feet above the sea, situated 
two miles west of Strathblane, I found the sandstone rock present- 
ing extensive sheets of smoothed horizontal surface, evidently ground 
down by friction, and presenting occasional striae, running in a 
direction S.E. by S. The rock had in some places imbedded in it 
quartz pebbles, standing up above the general surface. Being 
harder than the sandstone rock, these pebbles had been able to 
withstand the friction ; but some of them showed marks of rubbing 
on their north-west sides. 
