70 



Director' s Annual Report. 



Austral Islands, collected for the Museum by Mr. Seale in 1902. 

 The channels are .1 inch deep and .6 inch wide, and had been 

 slightly scratched by a pointed tool (as may be seen in the illustra- 

 tion) before the specimen reached the Museum. It was broken 

 from the smallest of a circle of upright stones, all similarly 

 graved. The surface of the stone has been bleached to a depth 



FIG. 50. PKTROGIAPHS FROM K()K.\HOKA, SUCIETV II). 



varying from .1 to .3 inch by weathering and makes a strong con- 

 trast with the almost black stone showing at the broken edge. 

 The bleached part is naturally softer than the interior, and if this 

 skin had been penetrated by the graving in order to bring out the 

 contrast of the dark and the light, the weather has since made the 

 whole surface uniform. 



The other instance is of several petroglyphs on a large stone in 

 Borabora, Society Islands. A postal card illustrating these was 

 given to the writer, in answer to enquiries for rock-carvings in the 

 South PaciSc, by an officer of the P'rench cruiser "Protet," and I 



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