Fire Blight of Pears, Apples, Quinces, Etc. 



163 



trees on the University farm, which had blighted badly the previous 

 season, were treated with this Specific. The following summer the 

 treated trees suffered even more severely than the previous year, and 

 more than the untreated trees near by in the same orchard. Moreover, 

 a strip of bark and the wood for two feet above and below the hole was 

 killed and rot fungi entered and began a heart-rot of the trees. A chem- 

 ical examination of the powder by Professor Cavanaugh of the Depart- 

 ment of Agricultural Chemistry, showed it to be 92% sulfur, a little 



Fig, 19. — Section ftont the body of the tree shown above. Note the plug 

 where the remedy was introduced, and the dead and blackened wood 

 extending into the heart of the tree. 



charcoal to color it and some asafetida to give it an effective odor. 

 The retail price of this odoriferous charcoal-sulfur mixture was $3.60 

 per pound. Correspondence with a large number of growers reported 

 to have used this remedy with success, indicated that their experience 

 was almost uniformly that of ours at the Station, that is, worthless as 

 a preventive of the disease and injurious to the trees. 



Experiments with four other remedies were made this spring in the 

 pear orchard of Mr. Ira Pease, near Oswego, N. Y., but owing to the 

 fact that very little Blight appeared in the part of the orchard where 

 the experiments were made, no conclusions can be dra-v\Ti. So far as 



