PLANTING. 129 



hard clay, where the striking of the plants under ordi- 

 nary planting would have been doubtful. The expenses 

 are higher than in the case of pit planting, but not by very 

 much, since the method contemplates only small mounds. 

 Whero mound planting is adopted against an excessive 

 degree of moisture in the soil, the mounds must be con- 

 siderably higher and larger than in the method just 

 described. The expenditure is further increased if the 

 planting is done on continuous ridges, prepared as de- 

 scribed on page 30. | 



IV. PLANTING WITH SLIPS, LA TEES AND SUCKERS. 



Plants of these kinds are used in the case of species 

 which do not readily seed, or the seed of which germi- 

 nates indifferently, or for the purpose of obtaining at 

 once plants of some size. Such methods are only 

 auxiliary in temperate Europe, except in the case of 

 Willows and Poplars. 



1. Slips. 



A slip or a cutting is a rootless plant, which consists 

 of a piece of young green wood taken from the stem 

 or a branch of a rooted plant ; when inserted into the 

 ground, it develops roots and crown. 



Slips may retain the leading shoot or be truncated. 

 The former consist as a rule of stool shoots ; the latter 

 can be taken from stool shoots or from the branches of 

 older trees, their length differing from a few inches up 

 to ten or more feet. 



In some cases slips are in the first instance placed into 

 nurseries until they have become rooted, but they are 

 generally planted out at once in the forest. The insertion 



VOL. II. K 



