126 HAND-BOOK OF TREE-PLANTING. 



Rows six feet apart, and trees one foot apart 

 in the row, 7,260 trees per acre. 



Rows eight feet apart, and one foot apart 

 in the row, 5,445 trees per acre. 



Rows ten feet apart, and one foot apart in 

 the row, 4,356 trees per acre. 



One mile of wind-breaks or shelter-belt re- 

 quires 5,280 trees or cuttings for a single row, 

 one foot apart in the row. 



