200 SEVENTH REPORT OF THE FOREST, FISH AND GAME COMMISSION. 



An avenue should be planted throughout its entire length with the same species 

 or, at least, for several blocks. By using one kind on a street a stately architectural 

 effect is obtained that will always be pleasing and impressive. While variety may be 

 desirable for its educational tendency, it should not be permitted because of the 

 irregular, unsightly appearance caused by trees of different sizes and shapes. Lamp 

 posts, as well as trees, are deemed ornamental by many people ; but no one would 

 even think of erecting posts of different heights, size and appearance on the same 

 street. The advantages of a variety are better secured by planting different species 

 on different streets. A pleasing and advisable variation of this rule has been 

 suggested by Mr. Lewis Collins, Secretary of the Brooklyn Tree-Planting Society — 

 that at the intersection of wide streets an Elm should be placed at each corner, an 

 arrangement which would add rather than detract from the architectural appearance. 

 A change of trees may be allowed on rural driveways where the irregularity of the 

 scenery will better permit such an arrangement ; but, even then, it is better to avoid 

 abrupt, repeated changes by planting the same species for a considerable distance. 



Although every residential street should be well shaded, an exception may be 

 made in commercial thoroughfares. The latter, in some instances, might be planted 

 and thus rendered more attractive without interfering with business operations. In 

 European cities the commercial streets often present a pleas'ing picture on account 

 of the foliage which also hides from view the marks of trade, while in Holland the 

 wharves in some places are shaded by tall trees that mingle their branches and leaves 

 with the yard arms and rigging of vessels unloading at the docks close by. 



Protection of Trees. 



In towns and cities the trunk of every tree, whether young or old, newly planted 

 or of full growth, should be enclosed to a proper height in wire netting of a small 

 mesh. Unless this is done, or some similar precaution taken, it is not worth while to 

 plant. The necessity for some such protection is readily apparent on examining trees 

 from the curbstone side, and observing the large number on which the bark has been 

 gnawed by horses. There is a feeling akin to pity when one notes the patient, 

 repeated efforts of the tree to repair the injury — -how it tries each year to cover the 

 wound with new wood and bark, only to have it torn and widened by some fresh 

 attack. It is wasted time to discuss punitive measures as a remedy for this evil. 

 The horse is not to blame; and any law for the prosecution of the driver would 

 be practically inoperative. A more sensible way would be to protect the tree by 

 some of the simple, inexpensive devices which are available. All of the trees in 

 Washington are protected by wire screens, of a large mesh, wrapped around the 



