UNDERGROUND WATERS OF NORTH-WEST YORKSHIRE. 283 
S 78, S 80, S 81, S 82. and S 83) wliich liave not been affected 
by any of the tests introduced, and wliich we consequently 
attribute to the general drainage of the clints. 
Two large springs at the bend of the Ribble. S 84 and S 85, 
have likewise been unaffected. 
Streams near Colt Park Farm. 
The streams sinking at P 62, P 63. and P 64. near High 
Barn, were found to unite in the spring at S 89 and to flow 
overground to Colt Park Farm, where the water sank, to reappear 
at S 90, whence it flowed overground for a few yards and again 
sank. This water was again seen in the spring S 93, in Salt 
Lake Quariy. where it forms a waterfall visible from the railway. 
It then crosses beneath the railway and sinks in a mass of glacial 
gravel at P 65. below which ])()int we were unable to trace its 
course. 
The fluorescein from the flows just described having been 
allowed to pass off. the streams sinking at P 48 and P 49. near 
Bent Hill Rig Barn, were next tested. These were found to 
unite and to flow along a master joint in the limestone, via 
P 59 and P 60, and then to turn down a cross joint to S 88. on 
Ashes Shaw Pasture Rocks. From S 88. after an overground 
journey of about ten yards, the water sinks at P61. and again 
resumes the direction of the master joints running 2:)arallel to 
the hillside to Rake Spring. S 91. 
The stream from Rake Spring flows overground i)ast the 
south end of Salt Lake Quarry, beneath tlie railway, and through 
Ashes Gill Plantation to P 66. on Ashes EUer Bank, where it 
sinks in glacial gravel near the river. 
Streams near Rihhlehead Station. 
S 102 is a small spring issuing from tlie grit beds of the 
Yoredale Series, above Keld Bank, on Park Fell. The stream 
from this spring sinks at P 73, about half a mile south-west of 
the station, at a height of 1.240 feet above the sea. 
A quarter of a pound of fluorescein was introduced at P 73 
at noon on June 29th. and was seen at S 103 at 3.30 p.m. on the 
same day. It again sank at P 74 and reappeared at S 104 at 
3.35. 
