of Edinburgh, Session 1879-80. 
607 
remnant of the drift. Between Sauchie and Gillies Hills (chiefly 
whinstone), which are near Coxit, there is a narrow valley running 
in a direction N.W. and S.E., which would help to guide a current 
running in the direction supposed. 
(4). The long escar of gravel passing through Callendar Park and 
Polmont, extending for about 2 miles, runs in an east and west direc- 
tion, because there, any current would flow in a direction approxi- 
matively parallel with the axis of the valley of the Forth. 
II. PROFESSOR HEDDLE'S NOTES . 
Ayrshire. 
1. In the Valley of the Stinchar, a boulder of fine-grained clay- 
stone, about a cubic yard in size, lies near the hamlet of Poundland. 
It seemed to be in its mineralogical character identical with the 
rock of the hill of Glassal, situated to the H.E., and also with a rock 
on the shore to the west near Bennane Head. 
2. About half a mile to FT. of Colmonell, at a height above the 
sea of about 200 feet, a dolerite boulder occurs 27 x 23 x 12 feet. 
Its longer axis lies N. and S. 
It lies on till, and the till covers the serpentine rock of the S. 
slopes of Belhannie Hill. 
A small boulder, apparently a fragment of the larger, lies to the 
south. 
About 600 yards E. by S. of this boulder, viz., up the valley, a 
spur of the same kind of rock projects out of the serpentine of the 
hill. 
3. Lower down the valley there is another boulder of the same 
rock. It has been rent into four pieces, and the impression is 
suggested that it had been rent in consequence of falling from a 
height. It also rests on till. The fragments indicate the boulder 
before being broken to have been 21 x 21 x 10 feet in size. Its 
long axis is also FT. and S. 
4. On the shore, a little to the north of Lendalfoot, there lies an 
Old Red Sandstone conglomerate boulder, 8x6x6 feet. It is undis- 
4 D 
VOL. x. 
