212 



BULLETIN 193. 



injury occurred to the tree in the sapling stage, and that the 

 sapling was broken off instead of one of the branches. One of 

 the upper branches 

 then became the 

 ' ' leader ' ' and in course 

 of time the broken end 

 of the sapling was en- 

 closed by the healing 

 tissue. 



This section of the 

 trunk was then sawed 

 through lengthwise and 

 in such a direction as to 

 split the core of the 

 dead sapling radially 

 from the center of the 

 new trunk. A view of 

 one-half of this section 

 is shown in Fig. 70. It 

 shows the origin of the 

 branch which became 



69. Section of oak showing dead sapling 

 stage near center. 



the new " leader" of the tree; as well as the large and irregular 

 __^ end of the broken sap- 

 ling covered over by 

 the healing tissue. 



The cross section 

 shows that this in- 

 jury occurred more 

 than 30 years ago, 

 very near 'the time 

 that Cornell Univer- 

 sity was founded. 

 Some accident, the 

 cause of which we can- 



70. Section of oak showing slivered end of not now determine, 

 broken sapling. befell thig Uee in Ug 



youth and the sapling was broken off, while one of the topmost 

 remaining branches in time replaced the main trunk. 



