214 Missouri Agr. Exp. Sta. Research Bulletin No. 8 



Variety 



Location 



of 



Tissue 



Results 



Same Jan. 20/13 



Same 



Jonathan apple, 

 five years old. 



Same. 



Same. 



Same. 



Same. 



Same. 



Same. 

 Same. 



Same. 

 Same. 

 Same. 

 Same. 

 Same. 

 Same. 

 Same. 

 Same. 



Jan. 20,'13 

 Mar. 25/13 



Mar. 25/13 



Mar. 25/13 



Mar. 25/13 



Mar. 25/13 



Mar. 25/13 

 Mar. 25/13 



Mar. 

 Mar. 

 Mar. 

 Mar. 

 Mar. 

 Mar. 

 Mar. 

 Mar. 



25/13 

 25/13 

 25/13 

 25/13 

 25/13 

 25/13 

 25/13 

 25/13 



-15.5 6 in. above ground. 



-15.5 



12 in. above ground 



-12.5 At crown. 



-20 



-12.5 



-20 



-12.5 



Mar. 25/13 -20 



-12.5 

 -20 



-12.5 



-20 



-12.5 



-20 



-12.5 



-20 



-12.5 



-20 



At crown. 



3 in. above crown. 



3 in. above crown. 



6 in. above crown., 



6 in. above crown. 



3 in. above ground. 

 3 in. above ground. 



6 in. above ground. 

 6 in. above ground. 

 9 in. above ground. 

 9 in. above ground. 

 12 in. above ground 

 12 in. above ground 

 18 in. above ground 

 18 in. above ground 



Very slight in- 

 jury in cor- 

 tex region. 



No injury. 



Severe injury 

 in cortex, 

 cambium and 

 sap wood. 



Very severe in- 

 jury in cor- 

 tex, cambium, 

 and sap 

 wood. 



Injury in cor- 

 tex, cambium 

 and sap wood 

 less severe 

 than at crown 



Less severe in- 

 jury than at 

 crown. 



Very slight in- 

 jury in cortex 

 and cambium. 



Less severe in- 

 jury than 

 above in same 

 regions. 



No injury. 



Very slight in- 

 jury in cor- 

 tex. 



No injury. 



No injury. 



No injury. 



No injury. 



No injury. 



No injury. 



No injury. 



No injury. 



It will be seen that the part of the trunk that most slowly de- 

 velops hardiness on approach of winter is that near the surface of 

 the ground and near the junction of rapidly growing limbs. All the 

 tissue at the lower part of the tree is more tender in early winter 

 than is the upper portion. Of course this might not be true on other 

 seasons. The autumn of 1912, however, was a normal one, the wood 

 apparently going into winter in a well ripened condition. In June 

 and early July the wood in the upper portion of the tree is most 

 tender. It is also interesting to note that in June and July when the 



