Manchester Memoirs, Vol. liii. (1909), No. 8. 31 



(99) Soil abrasion by the pressure and movement 

 due to soil creep and foundering is an agent of wider 

 application than the last named, but an examination 

 of deposits which have been subjected to considerable 

 thrust shows that the flints have been splintered and 

 shattered, but not chipped or flaked. Further if the edge 

 chipping were due to pressure on the flint in situ, we 

 should expect to find along the edge of the flint in 

 question, the series of detached flakes ; this, however, is 

 not the case. 



(100) There is a large number of deposits of Tertiary 

 and Quaternary age in which the Eoliths have not been 

 subjected to the influence of rapidly flowing water, or to 

 pressure, as they are embedded in a matrix of fine sand 

 or clay which entirely surrounds them, the flints not 

 being in contact with one another. In some of the strata 

 in the Croxley pits Eoliths of the Strepyien period may 

 be found, most of them bearing bulbs quite unrolled, and 

 in their pristine state. 



(loi) The action of atmospheric influences on flint is 

 well known as producing fractures, but rarely secondary 

 chipping. 



(102) The action of herds of stampeding cattle which 

 has been invoked to account for the secondary working 

 of surface Eoliths cannot be seriously advanced when the 

 multitude of tools of Flenusien, Campignyien (with bulbs) 

 and other Neolithic industries is considered. 



(103) We submit that in face of the very large number 

 of surface finds, the secondary work on which is identical 

 with that on specimens found in the drift, the advocates 

 of the theory of the formation of Eoliths by natural causes 

 must adduce satisfactory evidence of a natural agent 

 operating at or near the surface, if their claims are to be 



