-10- 



In the experiments tried a young tree was root pruned every year for three 

 years at the same time that the top was cut back. All the roots were cut 

 off from the tap root for as great a distance as three feet from the surface 

 with no herm to the tree. Of course when root pruning is resorted to the 

 corresponding pruning of the top must be heavier than it would be if nothing 

 were done to the roots. The tree treated according to this system shows 

 but a slight decrease in size from the trees which have grown as they would. 



One advantage of this tree which is rarely mentioned is that in maturity, 

 the head becomes quite open so that the shade cast is light though entirely 

 sufficient to all demands. 



The tree is a rapid grower and forms a specimen of considerable size 

 in a very short time. Mature individuals need a great sufficiency of room 

 for their development and should not be crowded. From actual experience it 

 has bean found that at three years of age, trees planted thirty-six feet apart 

 were too close. It is to be desired that fifty feet be the minimum distance 

 and sixty or seventy-five feet is not to be thought undesirable. 



Acacia de^urrenj mollis. This is a form quite similar to the foregoing. 

 The chief popular differences are the more glaucous color of the foliage and 

 the later blooming flowers. These flowers are not so showy as those of the 

 dealbata form, as they are of a very much lighter shade of yellow. Indeed at 

 times they appear as merely a yellowish white. 



The same requirements for planting, pruning both of tops and roots, and 

 so forth, are needful as in the case of A* decurrens dealbota. 



Acacia lonpi folia is one of the acacias to be avoided in street work. 

 Vfoen young it is quite similar to . melanoxylon which is desirable, but when 

 the mature heevd begins to form, which it doee at an early age, the character 

 of the tree begins to show. The trunk rarely assumes an upright position 

 and usually twists into some horizontal shape dividing into two or three large 

 limbs which sooner or later become so heavy that they break down from their own 

 weight. This is very frequent as the wood is very brittle. As there are so 



