14 



THE MONTHLY BULLETIN. 



The treatments which have gone with the application of Bordeaux 

 to the trunk — and without which Bordeaux would do little toward 

 curing a diseased tree — are shown in Figures 3, 4, 5 and 6. The old 

 method, as shown in Fig. 5, of slitting the bark, while often satisfactory 

 where the gumming is slight and the disease has only started, has been 

 practically discarded since it fails to remove all the infection, and 

 gumming usually goes on the next year. The treatment shown in 

 Fig. 6 also gives good results, under the same 'conditions. Here the 

 diseased part of the trunk is isolated from the good bark by two cuts, 





Fig. 5. — Old method of slitting trunk through gum 

 pocket which often cured slight cases where only 

 one slit was needed. The tree shown here was not 

 cured by the cut as is shown by the photo which 

 was taken a year after treatment. (Photo by 

 Fawcett. ) 



and has sometimes been used on rough, knotty trunks, as shown, but a 

 mass of infected bark is left on the tree and for this reason this treat- 

 ment has also, for the most part, been discarded. The treatment which 

 we have continued, and are now using, is shown in Figs. 3 and 4, and 

 consists of outlining the area of dead or diseased bark, and then cut- 

 ting out or removing all of the bark to a line about an inch and a half 

 beyond this area of diseased tissue. 



