112 



PRINCIPLES OF AMERICAN FORESTRY. 



tree shortened to correspond. In transplanting trees, 

 t£ey should be set at least one_ oi^two inches lower In 

 the soil than they formerly stood, and the roots should 



Fig. 29. — Extra-good roots on a forest-grown Elm, used 

 as a street tree. 



be spread out in the hqlesji'ithptit- -crowding. It is cus- 

 tomary to plant many kinds of small trees in furrows 

 made with a plough. 



Very Large Trees (those over six inches in diameter) 

 are sometimes successfully planted__in winter by_ takirjg 

 thein_uj3_jvith a^ball ofearth. This is done by digging 

 a trench around the tree, laj;ejnj;he_autumn, deep enough 

 to cut most of the roots, but far enough away from the 

 tree to leave a large ball of earth. The trench is then 

 filled in with a mulch of some kind, and when the ground 

 is frozen the tree is moved, with the ball of earth at- 

 tached, to the hole which has been previously prepared 

 and_ kept free from frost. 



After Trees Have Been Moved, or had their roots short- 

 ened in some other way, they should general}}' not be 

 transplanted__again for at least one or twoyears, during 

 which time they will have overcome the injuries done 

 to their root system. The time which should thus elapse 



