UNDERGROUND WATERS OF NORTH-WEST YORKSHIRE. 269 
Committee, and also by residents in tlie neighbourhood up to 
the time of the next meeting, but without result. 
On the day following the introduction of the test there 
was a very heavy flood, which may account for the non-success 
of the experiment, fluorescein when dilute being very difficult 
to detect in the brown peaty water of these streams except in 
brilliant sunshine. 
This problem was again attacked in 1904, wlien 4 lbs. of 
fluorescein were introduced at P 14. tlie stream being tlien in 
moderate flood. During the night heavy rain fell, and on the 
following morning the spring at Austwick Beck Head (S 28) 
was very strongly coloured. 
This is an interesting ca.se. inasmuch as the stream which 
flows past the Shooting Box runs in a depression in the side 
of Ribblesdale. and would if it continued its course on the surface 
inevitably fall into the River Kibble. 
It passes, however, by way of the pot hole P 14a, and then 
apparently falls into joints at right angles to its previous direc- 
tion, flows southward, passes under the watershed and emerges 
at Austwick Beck Head, whence it passes by way of Austwick 
Beck and the River Wenning into the Lune, while its neighbour 
to the north (P 18 and 19) flows into the Ribble. Thus, owing 
to the engulphment of one of them in the limestone, these 
two streams, separated only about 200 yards from each other, 
and which would under normal conditions flow into the same 
river (the Ribble), reach the sea at points separated by a 
distance of some 25 miles. 
The Underground Drainage of Xorber and Moughton. 
On reference to PI. XXIII. it will be seen that these two 
hills are spurs of the limestone plateau, on which Ingleborough 
stands, which run out for a considerable distance in a southerly 
direction from the main mass. The former separates Clapdale 
from Crummack Dale, while the latter lies between Crummack 
Dale and Ribblesdale. They both terminate at a short distance 
to the north of the Inner Craven Fault, to which, and the sub- 
sequent denudation, they owe their existence. 
