8o 



The Canadian Horticulturist. 



these he showed the microbe of the blight, and stated that he had frequently- 

 inoculated healthy trees with it, thus introducing the blight. Thence in the 

 young and succulent growth it would spread very rapidly throughout the trees 

 until it reached those parts which are too dry and tough in texture to afford 

 further development. Another common method of spreading the blight was by 

 means of insects which carry the microbes from one blossom to another while 

 they are gathering honey. Thus, while the bees are among our best friends,, 

 because without them a proper fertilization of the blossoms cannot be effected, 

 and little fruit would grow to maturity, yet in the way described above they are 

 the cause of more or less injury to our pear orchards. 



The blossoms are usually the part first affected, for the microbe finds a most 

 ready entrance into the cells of the trees through the nectar disk of the flower. 

 Professor Beach has proved the correctness of this theory in an orchard arti- 



FiG. 727. 

 Cut of Coldmbiax Raspberry, sent by the Introducer. 



