ON Kent's cavern, devonshike. 207 



fourth- or lowest-foot level of the Breccia, a small portion of -which ad- 

 heres to it. 



No. 6110, apparently of the same variety of chert, is rndcly semilunar in 

 form, 2*9 inches long, 1-8 inch in greatest breadth, and 1-2 inch in greatest 

 thickness. It has a thin edge on its rectilineal margin, hut attains its 

 greatest thickness at its curvUineal margin, and seems to have been used as a 

 scraper. It was found May 28th, 1873, at about 166 feet from the entrance 

 of the Arcade, without any organic remains near it, in the second-foot level 

 of the Breccia, traces of which still remain on it. 



No. 6128 may be said to be at once a rude parallelogram and an oval. It 

 is 2-9 inches long, 1-9 inch in greatest breadth, -8 inch in greatest thickness, 

 slightly and irregularly concave on one face, and convex on the other. Its 

 greatest thickness is very near one margin, whence it slopes to a compara- 

 tively thin edge on the other. Its internal structure is somewhat chalk- 

 like ; and it has probably been somewhat rolled. It was found about 172 

 feet from the entrance of the Arcade in the first-foot level of the Breccia, 

 without any noteworthy objects near it, on June 18, 1873. 



No. 6129 is a fine implement of the same form as No. 6022. It is 5-5 

 inches long, 2*8 inches in greatest breadth, 1'6 inch in greatest thickness, 

 approximates flatness on one face, and is very protuberant on the other, 

 which retains a portion of the original surface of the nodule. It is of a 

 somewhat coarse cherty structure and a dull pinkish colour. It was found 

 on June 20, 1873, in the fourth-foot level of the Bi'eccia, almost immediately 

 under No. 6128, but 3 feet deeper in the deposit, and without any bones or 

 teeth near it. 



No. 6139 is a faint pink unshapen lump of flint, the surface of which has 

 nevertheless been artificially produced. It may be a " core," or an imple- 

 ment spoiled in the attempt to make it. It was found about 128 feet from 

 the entrance of the Arcade, without any objects of interest near it, in the 

 third-foot level of the Breccia, on July 2, 1873. 



No. 6174, like Nos. 6110 and 6128, is thickest at one margin, and 

 slopes thence to an edge at the other, and, like them, has probably been 

 used as a scraper. It is 2-6 inches long, 1*6 inch in greatest breadth, and 

 1*1 inch in greatest thickness. It was found, with a tooth of Bear and a 

 few bones, on August 19, 1873, in the second-foot level of the Breccia, at 

 about 128 feet from the entrance of the Arcade. 



The facts disclosed since the Committee sent in their Eighth Report, and 

 which have been described above, point to certain conclusions and sug- 

 gest a few speculations to which it may not be out of place to call attention. 



The remnants of Crystalline Stalagmitic Floor in the Long Arcade, with 

 stones still cemented to their under surfaces, like those in the Gallery opening 

 out of the Great Chamber* and in the branches of the Charcoal Cavef, are 

 capable of but one explanation. They point to a time when the Breccia was 

 introduced ; and they mark or define the height it reached ; they show a sub- 

 sequent period when this accumulation was sealed up with a calcareous sheet 

 of which they are the remnants ; and they make known the facts that a por- 

 tion of the Breccia was dislodged, and vast masses of the Floor which covered 

 it were broken up. This was followed by the introduction of the Cave-earth, 

 and that by the formation of another Floor of Stalagmite, diff'ering from the 

 former in being granular instead of crystalline. 



That the Breccia was derived from without the cavern is certain from the 

 * See Eeport Brit. Assoc. 1867, pp. 4-5. f Ibid. 1872, pp. 41-42. 



