DESCEIPTIONS OF THE PLATES STONE IMPLEMENTS. [ A. XXX.] 129 



A. PLATE XXX. 



The pieces of stone here figured have been used in grinding and polishing. 

 Figure 1 appears fitted for polishing flat and grooved surfaces of wood or bone, 

 or for flattening seams in sewn skins. Figures 2, 3, 4, and 5 are of soft sand- 

 stone such as the Cretaceous strata of the Valley of the Vezere supply, and have 

 evidently been used in the rounding and sharpening of splinters and spillets of 

 bone, intended for needles, awls, arrow-heads, &c. (see p. 133). 



Fig. 1. A thin flake of limestone, somewhat polished on its two faces and its 

 rounded edge. The figured surface is slightly concave, as if it had been used 

 for sharpening or polishing some not very hard substances. 



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Fig. 2. An angular fragment of brownish-yellow friable sandstone, consisting of 

 quartz grains loosely cemented with carbonate of lime. Besides the five grooves 

 shown in the figure, there are four similar on the other side, having the same 

 direction, but somewhat more divergent and deeper. 

 From La Madelaine. 



Fig. 3. Portion of a long thin grindstone of soft, drab-coloured, fine-grained 

 sandstone (not calcareous), deeply worn on both faces and irregularly rounded 

 on the edges. It seems to have been broader once : 

 former grooves on the opposite faces have met, Fig. 22. 



dividing the stone longitudinally ; and the speci- Outline of the lower end of fig. 3. 

 men has been broken across, at the lower end of 

 the figure, by a recent fracture. Three grooves are 

 shown in the figure, one deep and narrow, one 

 broad, and the trace of a third. The other face is* 



scored with two deep longitudinal grooves (one of which undercuts the inter- 

 vening rounded ridge), and a fainter groove. See Woodcut, fig. 22. 

 From La Madelaine. 



Fig. 4. An angular fragment of brownish-grey, friable, siliceous sandstone, deeply 

 grooved on the face that is figured, and irregularly scored here and there on the 

 other face and edges. 

 From La Madelaine (?). 



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