surrounded by cambium. This objectionable growth is most com- 

 mon on severely tapped trees but is not confined. to the tapped area 

 and is sometimes met with an untapped tree. 7 Do you know the 



Section of stem 1- 



. Cork in bark h 



cause, and what will be the ultimate fate of these growths, will they 

 cut themselves out by growth of cambium, or will they continue 

 to spread indefinitely? Some. I have tried to cut out and find them 

 seven or eight inches long and wide in proportion. 



They appear to commence as small globules of wood inside the 

 bark, with a spur point piercing the true cambium and in contact 

 with the wood of the tree— thus. 



Cambium— _+ 



Cork v 



thevk! y dan gerous to the welfare of the tree and if so, should 

 With S e , Xcised wherever seen beginning. Tapping has been done 

 chL n h * of pricker, do you think that the pncker by 

 caE g off and leaving small fragments of wood surrounded by 

 m> c °uld start these unpleasant growths. 



^iSHf^ ver >' g lad if y° u can tel1 me an y thin s ab l out this -ru ntl 



ether other places have had trouble with the same thing. There 



