CAE GWTN CAVE, NORTH WALES. 



563 



pit. The section was perfectly clear all round, and the various 

 bands were traced continuously across both into the entrance and 

 over the cavern. The measurements were taken from a ladder 

 placed against the vertical face. 



Pig. 1. — Section across Shaft, slioiving tlie continuation of the Beds 

 over the entrance (June, 188G). (Scale 8 ft. to 1 inch.) 



a. Bone-earth. b. Laminated clay. 



c. Sand and gravel. 



d. Clay with boulders and bands of sand and gravel. 



e. Soil. X Eabbit-burrow. 



The rabbit-hole shown in fig. 1 indicates the track which extended 

 direct from the cavern to the opposite side of the shaft, in a band of 

 clean marine sand. The pit, which had been carried to a depth of 

 20 feet, was only 9 feet wide at the top and 5 feet at the bottom. It 

 was subsequently widened, but all the important measurements were 

 taken before this was done. The evidence that the deposits extended 

 continuously into the cavern was so clear, and had been seen by so 

 many observers, that it did not occur to us that anyone could 

 possibly doubt it, otherwise we should most decidedly have allowed 

 one side to remain undisturbed. Peeling, however, that the fact was 

 established beyond the possibility of doubt, we decided to proceed 

 with the examination of the brecciated bone-earth at the bottom, 

 and in doing so we burrowed under the drift-face and by that 



