part 3] A NATURAL ' EOLITH ' FACTORY. 243 



(8) Oblique notch, leading on towards a small rostro-carinate 

 form. More than a dozen separate chips were recovered in place, 

 which build the specimen up to the dotted outline. 60 x 49 

 x 22 mm., 87°. 



(9) Double notch, made from a flake from which the bulb has 

 been entirely removed b}^ subsequent ' facetting ' of the butt-end. 

 65 x 55 x 29 mm., 83°. 



(10) A better example of the same form, made from an outei 

 flake with bulb. As a possible useful implement this specimen 

 is greatly superior to the majority of the Kentish eoliths of cor- 

 responding form. 73x80x39 mm., 80°. (10 c) Longitudinal 

 ■section (scale f X |) with the bulb at the arrow and the scraping 

 edge at s. The flake shows normal characteristics of mechanical 

 pressure ; the normal curvature produced by a smart human blow 

 is indicated by the dotted line. 



(11) This specimen illustrates the making of a drill-like point 

 by reversed notches ; further search would doubtless be rewarded 

 by the discovery of better examples. A polished mark, associated 

 with a series of V-shaped incipient fractures, indicates the passage 

 of an intermittent jolting, force, which produced one of the notches 

 where it passed off the edge. Among these Bullhead flints such; 

 marks are usually lines of high polish, and not scratches. Upon 

 exposure to atmospheric influences, the crushed flint would weather 

 out and leave a slight groove. Similar association of scratches 

 with the chipped edges may be traced upon the Kentish flints. 

 83 x 79 x 41 mm., 85°. 



(12) This is the finest example in the series of a broad 'Eolithic' 

 notch ; most of the flakes were recovered. It happens unfortu- 

 nately to be on a heavy and clumsy nodule, measuring 179 X 111 



X 71 mm,, the length of the notch itself being 63"5 mm. The 

 chipping angle swings round from about 60° up to 110° or 1L5° 

 on the crushed edge, in the manner so characteristic of the Kentish 

 flints. 



(13) Acutely-pointed form, with the notch on the left of the 

 point. 101 x 94 x 42 mm., 77°. 



(C) The Rostro-Carinate Group. 1 



Although larger, the flints of this series show the same essential 

 Eolithic characters as the Plateau flints of Kent. That is to say, 

 they present high-angle edge-chipping, mainly in one direction, 



1 There are differences of opinion on the use of the term ' rostro-carinate.' 

 As I see the matter, there is a well-defined group of flaked flints, equally 

 •characteristic of both the sub-Crag and the Bullhead series, which is (in 

 fact) of rostro-carinate form, whether all of them be called ' rostro-carinates ' 

 or not. A more restricted delimitation in the application of the term will 

 reduce the proportion of ' rostro-carinates ' in both series ; but it will net 

 alter the similarity of the one series to the other. 



Q.J.G.S. No. 303. s 



