STUDIES PRELIMINARY TO PLANTING 79 



give it a certain amount of seclusion, is also far better than 

 that of a walk which exposes those using it to the continued 

 gaze of passers-by. 



Double Row. Frequently a double row of trees is planted 

 on the sidewalk one row along the curb and a second row 

 between the sidewalk and the property-line or immediately 

 within the property-line and parallel with the street. Such 

 a plan should be avoided. While the trees are small the 

 result is likely to be effective, but within a few years af- 

 ter planting the trees begin to interfere with each other's 

 growth, and the result is a bad crowding. The inside row 

 of trees grows much more vigorously than the outside row, 

 because it usually has better soil, and crowds the outside 

 row and dwarfs its growth. The row of trees along the 

 curb, however, is the more desirable ; and if any trees are 

 to be removed, those inside can be better spared. They 

 are, as a rule, however, the better trees, and it is a difficult 

 problem to decide which trees are to go if one wants to 

 rectify the mistake of the original planter. 



Number of Rows of Trees. The total number of rows of 

 trees that might be planted on a street depends upon the 

 width of the highway, the width of the sidewalks or plant- 

 ing strips, and the species used. In the city of Paris an 

 ordinance prescribes the planting of trees according to the 

 following regulations : 



Width of Width of Width of 



Highway. 



86 ft. to 92 ft. 

 100 ft. to 112 ft 



Roadway. Sidewalks. 



Rows of 

 Trees. 



Distance from 

 Houses. 



40 ft. 23 ft. to 26 ft. 2 18 ft. to 21 ft. 5 ft. 



46 ft. 26 ft. to 33 ft. 2 21ft. to 28 ft. 5 ft. 



) ft. to 125 ft. 40 ft. to 43 ft. 40 ft. to 41 ft. 4 16.5 ft. to 18 ft. 5 ft. 



132 ft. 46 ft. 43 ft 4 21 ft. 5 ft. 



Distance 



from 

 Roadway. 



