DESCRIPTIONS OF THE PLATES. 



A. STONE IMPLEMENTS. 



A. PLATE I. 



These are blocks of Flint from which narrow flakes have been struck off, by 

 a succession of carefully directed blows ; so that the piece remaining bears several 

 narrow facets, and may be regarded as the nucleus or core from which numerous 

 blade-like pieces have been removed by blows of another stone or a hammer. 



Fig. 1. Small oblong Core of grey flint, whitened on surface, and containing 

 Orbitoides. From it, on the side shown, five or six flakes have been struck. 

 The two broadest facets bear, at the bottom of the figure, the depressions 

 due to the " bulb of percussion." 

 Laugerie Basse. 



Figs. 2 a, 2 b. Conical Core, oblong at base, formed of whitish-grey flint, with 

 surface-change, and shaped by the removal of fourteen or fifteen flakes. 

 2 a. End-view, presenting the hoof-like form which the kind of flaking here 

 shown produces. 2 b. Side-view. 

 Les Eyzies. 



Fig. 3. Core of dark-grey flint, oblong in form, truncated at the ends ; bearing 

 on one side traces of ten or twelve detachments, and retaining on the other the 

 weather-worn crust of the original flint-block. 

 Laugerie Haute. 



b 





