28 DA VET'S PRIMER 



Nature is very patient and powerful. See how 

 nicely she plodded away and healed the large wound 

 presented in the previous lesson. Who, not acquainted 

 with trees, would suspect anything amiss? Here, 

 however, is a revelation ! Look at the same specimen 

 reversed. In this case there was no "stub" in the 

 way to prevent the granulation from closing over the 

 wounded spot, but the fungii (rot) takes hold of those 

 exposed cells, and the deadly work goes on ! on ! on ! 

 into the heart, following down in the cells, as before 

 pointed out. In this same case, it closed over this foul 

 mass of decay, and the sap in its upward flow, takes 

 up this virus, and if it were in an animal instead of a 

 tree you would have a case of "blood poisoning." 



The expert tree surgeon will glance at the top of 

 one of these trees and pass upon it as having "sap 

 poisoning." It is a misfortune that cannot be ex- 

 pressed in words that so many trees that are supposed 

 to have been rightly treated are thus undergoing a slow 

 process of destruction, all because people have not, in 

 reality, recognized that the tree is a LIVING GREAT - 

 LTRE, and, therefore, subject to all the general laws 

 that govern the animal kingdom. 



There are but few people who have any idea of the 

 evil effects of allowing disease to enter the system of 

 the tree in this way. The twigs drop off, and the 

 whole top will look sickly ; but this, however, may 

 arise from other causes. Be wise, therefore, and avoid 



