102 Rev. B. A. BuUen— Eoliths from 8. 8f 8.W. England. 



yellow clays of tlie Osborne Series, capped at the top of the cliff 

 by the Bembridge Limestone. 



Judging from the character of the fossils, we seem to be justified 

 in coming to the conclusion that Nos. 1, 2, and 3 were deposited in 

 an estuary, or in a lake, or lagoon near the sea ; the mollusca are 

 fluviatile, and so are the vertebrate remains. At the top of No. 3 

 we have evidences of much plant growth, pointing to a calm lagoon, 

 in which deposition was slow and regular. The fish-clay is puzzling, 

 and we shall probably not be far wrong in assuming that a sudden 

 influx of marine mud caused its deposition. The Clupece are most 

 probably marine forms, and all the fish appear to have been 

 smothered or asphyxiated, as the jaws are wide open and the fish 

 are quite perfect. It remains to be seen whether the prawns are 

 marine or fluviatile forms. Above the fish-clay we find that the 

 JPaludincB, etc., disappear, pointing to much more brackish conditions ; 

 the lenticular masses of bones suggest drifting and the influence 

 of deeper water, while further up the mottled red clays decidedly 

 indicate semi-marine conditions of deposition. 



In a local series like the Osborne Beds it is not surprising that 

 new forms should be found, especially in a deposit which varies so 

 much in its different outcrops. 



III. — Eoliths from South and South-West England. 



By the Rev. E. Ashington Bullen, B.A. Loud., F.G-.S. 



(PLATES VI, VII, AND VIII.) 



I. Introduction. 



II. Character of the Eoliths. 



III. Eesearches of Blackmore, Westlake, and C. Reid. 



IV. Eolithic Localities in the Drainage Area of the Avon. 

 V. The Dewlish Implements. 



VI. Use of Hollow ' Scrapers.' 

 VII. Description of Specimens figured. 

 VIII. Bibliography. 



I. Introduction. 



THE labours of Mr. Benjamin Harrison around Ightham, in Kent, 

 have been before the scientific world since May, 1889, when 

 Sir Joseph Prestwich read his now historic paper before the 

 Geological Society " On the occurrence of PalEeolithic Flint Imple- 

 ments in the neighbourhood of Ightham, Kent ; their distribution and 

 probable age." 



This was followed in 1891 by an even more important one, "On 

 the Drift Series of the Valley of the Darent, with remarks on the 

 Palaeolithic Implements of the district, etc.," also read before the 

 Geological Society.^ In this masterly memoir he gave the results 

 of his long and careful examination of, more particularly, Mr. B. 

 Harrison's collection of flint implements from the neighbourhood 

 of Ightham, their distribution and probable age. 



1 Published in the Quart. Journ. Geol Soc, 1891, vol. xlvii, pp. 126-163. 



