Series A, Pl. 6. 



EFFECT OF BAD TAPPING ON THE WOOD. 



SHOWING DECAY OP INTERNAL WOOD WHERE INJURED BY TAPPING. 



1 



Photos by M. Kelwau Bamber. 



(A) OUTER WOOD REMOVED ; (B) DARK V r,INES INDICATING THE DECOMPOSITION 

 OP THE WOOD. 



