84 



Some of them are merely spotted with dendritic markings ; others 

 arc completely covered vdth those spots which coalescing form a 

 coating of black. Most of the larger ones are rounded, some of 

 the smaller are quite sharp and angular, whilst others are sub- 

 angular and appear to have had but little wear. One yellow 

 pebble which I fractured presented the appearance of calcined 

 flint ; the interior was porcellanous white, with an outer coating 

 of an ochreous colour extending inwards from a depth of 1-18 to 

 2-18 of an inch, the result of infiltration from the surrounding 

 matrix. The most careful searching failed to detect any other 

 pebbles than those of flint, and here and there some white and 

 yellow quartz. 



I may here state that this is by no means the only deposit of 

 flint gravel to be found on our downs. During some of the walks 

 of the Club I have frequently called attention to the occurrence 

 of this gravel. Higher up than the quarry in question I observed 

 a pocket of flints cut through by the roadway leading to one of 

 the quarries. Then again, somewhat lower down, I found a 

 quantity of flints cemented together by a percolation of carbonate 

 of lime, forming a recent breccia. But there is a noteworthy 

 feature in these flints; whilst they are to be found more or less 

 plentifully scattered over the fields all the way from the Chalk 

 DoAvns to the South of the Box Valley, yet so soon as you cross 

 over to the North side they become very rare indeed, and if 

 found at all generally show traces of ha-vdng been fractured and 

 flaked by the hand of man ; consequently brought there by 

 human agency, and not coming Avithiu the scope of these notes. 



There is a great distinction between this flint gravel on the 

 higher ground and the ordinary gravel found in the valleys. 

 Wliilst the former consists almost entirely of flint, the latter is made 

 up of almost every rock in the neighbourhood,* from Mountain 



* These gravels ia which MammaliaQ remains have been found, and hence 

 termed ''Mammal drift," have been described by Mr. Moore in Vol. II., 

 No. 1, of our Proceedings 



