304 sir II. C. 'E\:iG'L^'£itLTi\ Additional Obfervations on 



not examined, and little doubt can be entertained of its fimilarity 

 to the reft of the range, to which it evidently belongs. 



In Brading pit fome flints appear in detached nodules, and thcfe 

 gre found and unbroken. 



The inclined ftrata of flint are vifible, but not to advantage, ow- 

 ing to the manner of working the pit. In thefe ftrata the flints arc 

 univerfally fhattered, fome into abfolute powder, others into groffer 

 powder and fragments mixed. Bat befides thefe ftrata, the chalk in 

 this pit is divided by vaft perpendicular fiifurcs, as fmooth as plaifter 

 walls, and in fome of thcfe fiftures flint has formed, which appears 

 broken like that in the ftrata. 



The road above Knighton only juft cuts into the chalk ftratum, 

 but all the flints vifible in the banks are extremely fhattered. 



The pit at the weft end of Aftiey-down, near two large barrows, 

 is the moft extenfive and fatisfaftory of any I have feen. The per- 

 pendicular face of the chalk, where worked, is not lefs than fifty or 

 fixty feet, and its direction is at right angles to that of the ftrata, 

 and parallel to their tine of dip : — of courfe, they are feen to very 

 great advantage. The ftrata feem to dip northward more rapidly 

 than in any other j^lace where I could obferve them. The angle of 

 inclination is from 75 to 80 degrees. There are not layers of flint 

 between every layer of the chalk. Some of the chalk is peculiarly 

 folid, and rifes in very large maffes, afFe£ling a cubic form. Their 

 iolid vein is from twenty-five to thirty feet thick, and is in ftrata 

 ffom three to four feet. In all this folid part there are very few 

 flints. 



Both above and below this harder bed (fpeaking of the original 

 pofition of the ftrata) the chalk is fofter, and has more flints in it. 

 The flratified flints in this pit are full as much fliattered as any I 



' 6 had 



