ORCHARD PROTECTION. 63 



The philosophy of this disease should come in for more than 

 passing notice. It is well known that one branch or portion of a 

 dormant plant may start into growth independent of the con 

 dition of the rest of the plant. Thus a branch from a grape vine 



Fig.18. Apple tree with trunk protected by boxing. Such treatment 

 protects from sunscald, from severe freezing, and from cultiva- 

 tion injuries. 



or other plant, brought through an opening into the greenhouse 

 in winter, will soon start into growth while the rest of the vine 

 is frozen out doors. So the portion of the trunk of an apple 



