HUGHES : IXGLEBOROUGH. 
193 
Less than 300 yards to the north we come to Beecroft Hall 
Plantation, where there is a somewhat similar section in a similar 
beck, originating in a similar way in a depression in the base of 
the Mountain Limestone. Here eight feet of Hmestone and 
calcareous shale with quartz pebbles is seen passing down into 
a red conglomerate 11 feet in thickness, which rests on the sandy 
flagstone. 
Our boundary now crosses the vaUey, but is entirely obscured 
by drift and alluvium. It probably runs up-stream for about 
a mile above Horton-in-Ribblesdale. Returning south on the 
other side we find, in Dow GiU, crushed rock belonging to the 
Bala Series with the Mountain Limestone above, and in the stream 
running out of Bold Bar Plantation, we find 10 feet of thin- 
bedded limestone with shaly partings, passing down into five 
feet of calcareous conglomerate, and that into red conglomerate, 
seen to a depth of 15 feet. 
I commend this half a square mile east of Horton-in-Ribbles- 
dale to anyone who wants a nice compact and very varied bit 
of work in the field. It is the last peep we get of the Bala Beds 
as they pass under the Yorkshire Moorlands. It has never been 
thoroughly worked out. The older rocks are in places highly 
fossiUferous, but the fossils have not been systematically collected 
or placed on record, or even carefully determined. They show 
lines of disturbance which have not been laid down, and along 
the crush- belts yield copper, lead, iron, and other minerals. 
We here see also the last of the Basement Bed of the Carboniferous 
in this direction, and can study the gravelly moraine mounds of 
the later glaciers on the one hand, and the wide spread mountain 
drift on the other. 
We have now to carry a hypothetical boundary for about 
two miles south over drift-covered slopes of swampy moorland, 
with nothing to guide us save a spring here and the shape of 
the groimd there, under Hayber Hill, over Studfold High, across 
Great Moor Head, and round to Calf Close, where we find the 
Mountain Limestone resting upon six feet of conglomerate. 
Round the high moorlands of Stainforth and Catrigg the indica- 
tions are more clear, and on the south side of the small elevated 
area, where " Gorbeck " is written on the six-inch map, what 
