CITRUS TREES AND THEIR DISEASES 19 



Others have applied coal tar, time will tell of the 

 injury caused by this treatment; some have used oils, 

 it only takes time to tell the injury caused by this 

 treatment: a little horse sense would come in very 

 handy when applying oil to a tree. Any of the growers 

 who have ever had any experience in allowing hogs to 

 run in an orchard, just notice where a hog rubs against 

 a tree a few times. In one year's time you can notice 

 a dead spot on the body of that tree where the hogs 

 have rubbed, as the greasy substance from the hog 

 closes the pores of the bark and cuts off circulation 

 at once. 



To make a long story short, the writer wants to 

 impress upon the reader this one indisputable fact 

 you cannot use anything, no matter what, successfully 

 upon a tree that will not disolve in water. This point 

 will save the grower, if he will only take heed, from 

 injuring his trees. Take a sample of the general reme- 

 dies and see if you can reduce them or if they will mix 

 with water. If they will not mix with water, my ad- 

 vice to you is, keep any remedy off your tree that will 

 not. 



The writer has made a great many experiments 

 upon the body of the tree with practically every chem- 

 ical or drug that has been heard of, and, until he dis- 

 covered the above fact he never was so successful 

 with trees, and the only application of real value to 

 your tree is one made from absolutely nutritious ele- 

 ments, something that would be porous and at the 

 same time a non-conductor of heat, something of a 

 penetrating nature that will keep the bark in a nice 



