secretary's report. 
335 
After luncheon the slopes of Moughton were ascended, and 
a fine view obtained of the surrounding country as far as More- 
cambe Bay. The extensive limestone clints were examined, 
and a visit paid to the head of Crummack Dale, where the springs 
which break out at the valley end have worn back the limestone 
into an abrupt scarp. 
At the General Meeting, under the presidency of Mr. Wm. 
Simpson, F.G.S., an address on " The Geology of Ingleborough " 
was given by Mr. J. H. Howarth. F.G.S., and Mr. A. R. Dwerrv- 
house, M.Sc, F.G.S., Secretary of the British Association " Com- 
mittee for the Investigation of the Underground Waters of 
North West Yorkshire,'' described the recent work done in 
tracing the streams on the eastern slope of Ingleborough, and 
the survey of underground channels connected with Alum Pot. 
A resolution was passed expressing deep regret at the sudden 
death of Mr. James Bedford, of Leeds, who had been a member 
of the Society for 28 years. A meeting of the Underground 
Waters' Committee was also held, at which arrangements for 
continuing the investigations were made. 
On Saturday morning, April 25th, an enlarged party, under 
the leadership of Mr. A. R. Dwerryhouse, M.Sc, F.G.S., devoted 
themselves to the examination of the underground passages 
runninor towards Alum Pot. Loner Churn was descended bv 
the aid of ladders and lamps, and its passages explored until 
a glimpse could be obtained of the light entering the precipitous 
Alum Pot. After luncheon the part}^ descended the hill to 
Selside, and visited a curious hollow called Footnaw's Hole, 
which acts as a relief for the underground waters coming from 
Alum Pot when there is heavy rainfall on the fells. Following 
the dry channel by Avhich the overflow from Footnaw's Hole 
is discharged into the Ribble, that river was forded and a visit 
paid to Turn Dub, an oval pool on the east bank of the Ribble. 
from which a stream constantly flows, though no inflow of water 
is seen. By means of fluorescein put in at Long Churn, and 
reappearing at Footnaw's Hole, and then at Turn Dub, the 
connection of these holes with Alum Pot had been established. 
The slow passage of the coloured water, which took thirteen 
days to make the journey underground of one and a haK miles. 
