UNDERGROUND WATERS OF NORTH-WEST YORKSHIRE. 251 
On March 21st, 1901, Mr. Dwerrvhouse reported tlie results 
of the tests at Crina Bottom, and it was resolved to test Alum 
Pot on Saturday, March 30th. 
On October 31st. the Sub-committee met in Leeds, when 
Mr. Dwerryhouse read the report which he had presented to the 
Glasgow Meeting of the British Association. He also reported 
on the results of the tests at Alum Pot. and announced the 
connection between Alum Pot, Footnaws Hole, and Turn Dul). 
It was resolved to continue the investigation of the western 
area, and to put down a bore hole near Turn Dub, in order to 
ascertain the depth of the drift. It was decided to accept the 
assistance kindly offered by Mr. Theodore Ashley. Mining 
Engineer, of Leeds, in surveying Long Cliurn and its connecting 
passages. 
The third meeting of the full Committee was lield at Horton- 
in-Ribblesdale, on August 29th. 1902. under tlie presidency of 
Mr. F. W. Branson. Mr. Dwerryhouse read a draft report of 
the year's work, which was approved for presentation to the 
British Association at the Belfast Meeting. Mr. Theodore 
Ashley exhibited and described a plan of Long Churn with cross 
sections. A hearty vote of tlianks was ])assed to him for his 
services. A conversation took place as to the relation of the 
jointing of the limestone to the direction of the chief passages 
in Long Churn. 
The members of the Committee, led by Messrs. Dwerry- 
house and Ashley, traversed pRit of the underground passages 
of Long Churn and plotted them out on the surface with tapes 
and pegs. Boring was attempted at Turn Dub. and boulder- 
clay was proved, but it was so crowded with large boulders 
that the apparatus could not pierce it. 
The Sub-committee met on October 2nd, 1902, when Mr. 
Dwerryhouse reported on the work accomplished during the 
summer in surveying and investigating Long Churn and the 
springs and channels in the neighbourhood of Alum Pot. The 
course of several streams north of the Shooting Box stream had 
been determined by fluorescein, and the crossing of an upper and 
a lower line of drainage had been established. 
