treatment. In many places they have been growing in sod for years 

 where no fertilizer has been applied, and a hay crop removed an- 

 nually, and in such cases one year's use of a plow and harrow, to- 

 gether with manuring and some kind of cropping, would work won- 

 ders. The leaves of elm trees under cultivation will change their 

 color and double their size very quickly. 



A tree in perfect health should make a vigorous growth and have 

 large, dark green leaves, and the bark should be healthy in hue. 

 If the conditions are otherwise the tree is not perfectly healthy and 

 is more likely to fall a prey to certain diseases. 



In applying remedies to trees it is well to be on the conservative 

 side, since it is a very easy matter to cause them serious injury. 

 The different spraying mixtures and banding substances recom- 

 mended for trees are not always to be depended upon, and many 

 trees are injured by their use, hence a word of caution is not out of 

 place. Unfortunately at the present time it is necessary to be on 

 the watch for bogus "tree doctors " and their stock of patent hypo- 

 dermic injections guaranteed to rid trees and vegetation in general 

 of insect and fungous pests, and other nostrums of a " sure-cure " 

 nature. The tree warden should be, and often is, a man of intelli- 

 gence and common sense and one to be called upon for advice per- 

 taining to trees. There are also competent firms and professional 

 men who are capable of giving advice in regard to the proper treat- 

 ment of trees. 



See "Woodland and Roadside," Vol. V, No. 3, June, 1906, and the Ann. Rept. of the 

 Hatch Experiment Station for 1Q06. 



