XXVII 



INDIAN ROCK-PICTURES 



485 



toed foot had trod on the rock while still soft ; but 

 they are scattered, not consecutive. It is not so 





FlG. 22. GROUP OK PlCTURKS A I J \CARITE CAXOKIKX, Kl' > l'\ri>ES. 



easy to explain these by natural causes as it is that 

 of the panellas or pots, which are cylindrical holes 

 frequently met with on the rocks of the falls of the 

 Rio Negro and Uaupes ; these have been worn- 



