SKCUKTAHV S KKPOiri". 
party was eventually stopped by the roof coming down to the 
water level. 
Small Spring to the North-east of last (S 53). — There is never 
much water in this spring, and it is quite dry in seasons of drought. 
It probably derives its water from the peat at its head. 
The water sinks at P 28 and issues, as proved by a fluor- 
escein test, at S 55, along with the water from P 29. 
The underground junction of these two streams was after- 
wards traced, though it was found to be impossible to follow 
the whole length of the passage, the roof being too low. and 
there being deep pools of water lying in the bottom. 
It may be mentioned in passing that as this was a short 
run metliylene blue was tried for the test ; but although only 
a small quantity of water was flowing at the time it was not 
seen at S 55, although one-fourth the quantity of fluorescein 
succeeded two hours later. 
This, together with the failure of methylene blue to put 
in an appearance when used at Grey Wife Syke, as mentioned 
in the second report of this committee, demonstrates con- 
clasively the superiority of fluorescein for purposes of this 
nature. 
Long Churn Spring. — This rises on the upper slopes of the 
fell, and sinks on Borrin's Moor at P 42, and after a very short 
underground course issues at S 57. formings however, only a 
very insignificant part of that spring. 
The next series of experiments had for its object the dis- 
covery of the source of the bulk of the water at S 57. 
On examining the upper part of Alum Pot Beck it was found 
that a large part of that stream sank at P 33, and fluorescein 
introduced here was seen at S 57 within an hour. 
P 26 was the next point of experiment, and by a series 
of trials with fluorescein it was found that the water flowed 
underground along a well-marked line of joint to P 34a. 
This line of joint is well marked both by crevices in the chnts 
and by a line of pot holes, in some of which the water shows 
itself. It runs X. IS'' W. 
