301. 
On a Boulder in a Coal Seam, South Staffordshire. 
By Mr Bonney. 
This boulder was found in the 13th coal of the Cannock 
and Rugeley Colliery —which seam is about three yards thick, 
and probably about 200 feet above the base of the coal-field, 
which in South Staffordshire rests on upper Silurian rocks. It 
weighs 13 lbs. 13}0z., and is about 19 inches in girth either 
way, and about 4% thick. The rock is a very compact grey 
quartzite, which exactly resembles that of the pebbles in the 
Bunter conglomerate of Staffordshire. He thought it had 
been brought entangled im the root of a tree. The difficulty 
was to find out whence it came. The Bunter pebbles were 
supposed to have chiefly come from Old Red Sandstone rocks of 
east Scotland, and to have been originally derived from much 
older highly altered rocks, probably rather in the north-west of 
Scotland. The general course of the sediment in both the 
Bunter and Carboniferous times was from the north-west, and 
it was probable that the pebble too came from that quarter. 
The principal difficulty in that supposition was that all the 
known beds containing similar pebbles to the north-west did 
not appear likely to have been undergoing denudation in 
Carboniferous times. Hence the author thought that with our 
present knowledge the problem could only be stated and not 
solved. 
New Fellows elected : 
CG. W. Mout, M.A., Corpus Christi College. 
CG. W. Hircutns, B.A., Sidney Sussex College. . 
