auapL.Journ G(>(5l ,Sne VcL XLVl] . Pl . Vlji 



Vi.,/\ (15V). 



i'li/yimi. * 



V Jfy'y ^ 



Fi§- 



Pi^ 5.f,57;. 



/ 





i/l 



7, 



y 



Mir\tern Bros , lith. 



FLINT IMPLEMENTS OF THE CHALK PLATEAU . 

 Type, Spucurusns %- natural sixe. 



