Canker on Apple and Pear Trees. 



69 



matter round the edges of the scars which may have been 

 congealed exudation. Upon a careful consideration of all 

 the conditions of the infected apple branches, in connection 

 with the reports and notes on the attacks of the Bacillus 

 amylovorus, it was concluded that there were many features of 

 resemblance, and some of the branches were submitted to 

 bacteriological examination ; but they were so much dried up 

 that it was hardly possible to detect the presence of bacilli. 



