FIG. 82— HISTORY OF A STUB IN SIX CHAPTERS 

 Readinj^ down (left) 1, outside bark section showing extension of wood from 

 trunk to try to heal in the stub rotted out where the hole is left; 2, stub rotted out, 

 leaving hole. Decay of wood occurred after the tree was cut; 3, wood nearer h art 

 of tree. (Right) 4, decayed knot in place; 5, decayed spot besid° almos* heathy 

 knot; 6, knot in healthy condition except for checks- — decay not progressed so tar. 

 In the lower right-hand corner of each sretion is shown a second knot left by a 

 stub. In 4, 5 and 6 note holes caused by borers. Decay often enters by such means. 



