120 Ornamental Plantbuj. 



committee of citizens whose authority is recognized by general con- 

 sent. 



(6.) Upon a given street, the trees should be all of one kind. 

 The diflferent streets may be planted with different kinds, and a 

 pleasing diversity thus secured. 



(c.) The lines of trees should not be less than six feet, and in 

 wide streets not less than eight or ten feet from the outer line. In 

 very wide and quiet streets, not thoroughfares, a charming effect is 

 secured, by having a line of trees in the middle, with carriage-ways 

 on each side, and at proper crossings. 



(d.) The trees should be protected by proper guards while young, 

 and generally by a railing on the side towards the middle of the 

 road when they have grown to a large size. 



(e.) They should be protected by Avell-enforced ordinances, and 

 by public sentiment, from being used as hitching-posts for horses. 

 To prevent the necessity, such posts should be provided, far enough 

 away to be free from danger to the trees ; it may still be within 

 their shade. 



(/.) For immediate effect, as well as ultimate advantage to the 

 plantation, the trees first set may be at half the distance apart that 

 is intended for the full-grown trees ; and the alternate ones may be 

 of some quickly growing kind, that should be taken out as they 

 crowd the more valuable kinds which are to remain. These tem- 

 porary trees will tend to render the growth of those between them 

 higher, and will leave less trimming necessary afterwards. The 

 cottonwoods, sofl-maples, poplars, and willows afford convenient 

 trees for such uses. 



ig.) Care should be taken that the soil be kept mellow around 

 the roots, and that they be watered while young in times of great 

 drouth. 



474. In streets much traveled, a grating placed in tlie pavement, 

 and extending a yard or so on every side, would be useful. In Eu- 

 rope, iron gratings of ornamental design are placed around the 

 trees, but not in contact with them. They are on a level with the 

 pavement, and so placed as not to obstruct travel. Througli these 

 gratings the air circulates freely, and the roots are fully exposed to 

 the rains. They may be watered and fertilized in case of need, and 

 the soil mellowed by spading from time to time. We here present 

 the sketch of a grating suitable for such a purpose. It may be made 



