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DR. H. HICKS 03T THE 



point ; indeed, the end of it was not reached when the work was 

 suspended. This fact, even if we had not obtained similar evidence 

 at the south-west end of the cutting at a distance of about 22 feet 

 from the point above referred to, and also at every foot in that 

 length either in front of the entrance or along the cliff-face, it 

 might have been supposed, would alone have been sufficiently con- 

 vincing evidence that the theoretical swallow-hole, or a broken wall 

 of the cavern subsequent to the deposition of the marine deposits, 

 could not possibly have produced such a regular sequence in the 

 deposits from the bone-earth upwards. Moreover, as already stated, 

 all the angular blocks of limestone were buried in the sandy clay 

 which contained the bones, always under the laminated clay and the 

 stratified sand. The photographs show also that the bedded sand 

 belonging to the so-called marine drift has not sunk in towards the 

 theoretical swaUow-hole, but that it (as well as the overlying de- 

 posits and the underlying laminated clay) dips everywhere away 

 from the cliff and from the mouth of the cavern. Bones were dis- 

 covered at this time under the drift at the north-east end of the 

 cutting at a point 3 feet outwards from the edge of the overhanging 

 rock, and it is important to remember that the sand passed under 

 and abutted against this edge in an undisturbed condition when the 

 section was reopened this year (fig. 3). 



Fig. 3. — Section at Nortli-east end of Excavation, as seen October 3, 

 1887. (Scale 8 feet to 1 inch.) 



b. Laminated clay. 



a. Brecciated bone-earth. 



c. Sand and gravel. 



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



Soil. 



X Shell-beds. 



* Fissure. 



