REPORT OF THE STATE ENTOMOLOGIST I913 47 



and, in some instances, accompanied the first season by abnormally 

 large, dark green leaves. The point of injury is definitely indicated 

 by the abundance of sap in the lower parts of the affected tree, the 

 death of the middle portion and a gradual drying out of the ter- 

 minal parts above the injury. The dead leaves usually have a 

 darker brown color than those on the limbs suffering from drought, 

 sun scald or similar affections. An examination of the inner bark 

 of affected limbs shows a well-marked, girdled or dead area from 

 which point there may be progressive dying in both directions, 

 much depending upon the severity of the injury. 



Young fruit trees may have the bark badly blistered in late spring 

 and early summer, the underlying tissues being soft and evidently 

 unhealthy. The death of affected trees or parts of the same may 

 occur the following spring, drag through the summer or be deferred 

 for a year or more. Only recently our attention was called to some 

 trees in an unsatisfactory condition, the owner blaming this upon 

 the painting of the trunks with petroleum some ten years earlier. In 

 the case of very severe injury even the buds may fail to develop 

 the spring following the treatment, or the vital processes may be 

 arrested by the time the leaves are one-fourth grown. 



