Hull — On the Ballynoe Springs. 



309 



As regards the question of the depth of the underground 

 reservoir from which the Ballynoe Springs have their origin, it 

 must be concluded, from the above observations, that the great 

 body of the water is derived from strata at a depth of about 50 feet 

 under the hill behind Queenstown. This hill rises to a height of 

 305 feet above the sea, and on the summit there is a plateau for a 

 considerable distance, while the strata rise at high angles to the 

 surface, and range nearly east and west, parallel to the coast line 

 below the town. The direction of the coast where the springs 

 break forth is at right angles to the direction of the beds ; and we 

 must suppose that the underground water-surface ascends from that 

 of the H. W. level at the springs inland with the rise of the ground 

 till it reaches a level of about 250 feet above the sea, at which it 

 remains constant till the ground again falls towards the margin of 

 the sea, and the depression of the Annebrook valley. The original 

 source of supply is, of course, that proportion of the rainfall which 

 percolates downwards through the joints, fissures, and bedding- 

 planes of the strata. The percolating waters, on reaching a depth 

 of about 50 or 60 feet enter the permanently saturated strata, and 

 down to an unknown depth constitute an underground reservoir 

 and ultimate source of supply to the Ballynoe Springs. 



Ballynoe Springs. — Additional Observations by Mr. C. G. Doran.* 



* Note added in Press, March 27, 1889. 



