26 College of Forestry. 



it is firmly established before winter sets in. But every sort 

 of work comes with a rush with the opening of spring and 

 many times it is necessary to hasten the planting of trees to 

 such an extent that many details are neglected. During the 

 past several years there has been a great deal of successful 

 tree planting during the autumn weeks before the hard freez- 

 ing of the ground. Trees set at this time of the year usually 

 become established so as to make a start as soon as spring 

 opens. It is safe to expect equally good results with most 

 planting whether it is done in the autumn or in the spring 

 but it is advisable to take advantage of autumn planting 

 whenever it is possible to do so. 



SELECTING THE KIND OF TREE FOR STREET 



USE. 



Nature has endowed the earth with so many varieties of 

 trees useful for shade and ornament that it is possible to 

 select some variety that will meet the requirements of each 

 special place and purpose. In a list at the back of this bul- 

 letin there is a description of many of the best varieties of 

 trees for street planting. It must be borne in mind that not 

 all varieties are adapted to city street conditions. Out of 

 the entire number of shade trees that are desirable for lawn 

 or park planting, we can select about twenty that are really 

 useful for street planting. Trees for street use should pos- 

 sess special qualities : 



First: A tree should be selected that in itself is desirable 

 from the standpoint of general habit of growth. It should 

 have a root development the nature of which does not injure 

 sidewalk pavements nor interfere with water-pipes. Its 

 stem should be straight, clean, and with a bark covering that 

 is not broken easily by abrasion. The foliage should be of 

 an attractive color and it should not be dropping continually. 

 The entire top of the tree should be as free as possible from 

 litter which it would cast to the ground. 



Second : It should be capable of adapting itself readily to 

 the soil conditions in which it must grow and be as resistant 



