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Proceedings of the Royal Society 
character with rock of Glassal Hill situated to H.E., and also with 
rock on shore to west at Bennane Head (Sixth Report, p. 33). 
Culmonelh — Half a mile to north, at height of about 200 feet 
above sea, a dolerite boulder 27 x23xl2 feet (552 tons), its longer 
axis and S. It lies on till A small boulder, apparently a frag- 
ment of large boulder, lies to the south (Sixth Report, p, 33). 
Another boulder of dolerite, which had been 21x21x10 feet 
(326 tons), with longer axis and S.; — -now rent into fragments. 
Query. — Did boulder break by falling from a height? 
Rendalfoot. — A little to north, an Old Red Sandstone Con- 
glomerate boulder 8x6x6 feet It is undistinguishable from the 
Conglomerate rock of Wemyss Bay, situated about 30 miles to the 
north (Sixth Report, p. 33). 
Beith . — On Cuifs Hill, consisting pf porphyry, there are on its 
north sicle many small granite blocks which must have come from 
the west or H.W, 
(1) Mr Robert Craig of Beith, in several papers read before the 
Geological Society of Glasgow (Trans., vol. iv. parts 1 and 2), divides 
the boulders in the north of Aryshire into two classes. One class con- 
sists of rocks foreign to the district, viz., Old Red Sandstone, granite, 
quartz, gneiss, inica of chlorite, schists, and clay slate. These he 
thinks were transported from mountains in the N.W., distant from 
50 to 70 miles, by drift ice and marine agency. The other class he 
derives from rocks situated to the K.E, and at no great distance, 
transported by land ice. 
(2) Messrs Crosskey and Robertson also sent to the Glasgow 
Geological Society (Trans., vol. iv. part 1) an account of boulders of 
great ske, and in large numbers, found in excavating new docks at 
Greenock, The great majority of the larger boulders are sandstones 
of the neighbourhood the remainder are of quartz, mica schist, &c., 
from the Argyleshire mountains to the H.W. 
(3) Mr Robertson, in the Glasgow Geological Society’s Transac- 
tions, 19th Jan. 1877, gives an account of large boulders, covered 
with Balani and Serpulw, in a bed of sandy mud 18 feet deep, con- 
taining also nodules of flint, 
The conclusions he drew from the boulder being covered with 
marine zoophytes was, that after being so covered, they had been 
lifted up by shore ice and transported to their present position. 
