Plate 87 



Types of rude stone implements improvised from natural pebbles, the shape 

 of which required only slight modification to adapt them for the purposes 

 intended. i=Hoe or rude celt. 2=Hammer. 3=Pick. 4, 6^Net sinkers. 



i 5=Pitted hammerstone. 7=Hammer. 8=Anvil and grinding base. 



;9=Smoother. io=Pitted hammerstone and small anvil. 



