ARBORICULTURE. 



341 



soil. For every species of cutting, the soil should be light, and 

 composed, at least, of half of fine siliceous sand. There are 

 many species of exotic plants, whose cuttings will only strike 

 root in pure siliceous sand. It need hardly be remarked, that in 



k M. : 



this mode of propagating, watering is 

 more particularly required to be attend- 

 ed to than in any other. The utility 

 of the sandy nature of the soil consists 

 in its retaining no stagnant moisture, 

 but just sufficient for the wants of the 

 shoot during the process of rooting. 

 As soon as the cuttings are well rooted, 

 if in a light soil of the above description, 

 they should be carefully taken up and 

 transplanted to their proper soil ; for although the shoots produce 

 roots more quickly and in greater abundance in the siliceous 

 sandy soil, yet it is unable to support the growth of the plant after 

 the proper functions of the roots begins. Next to that of 

 propagation by seeds, plants may be increased by cuttings more 

 generally than by any other mode : the process, however, requires 

 more time, skill, and attention, than is demanded for rearing trees 

 from suckers, or by layers or grafting, and it is therefore chiefly 

 practised for the increase of exotic ornamental plants ; but the 

 following forest trees are most advantageously raised from cuttings. 



Anona triloba, 

 Platanus occidentalis, 

 Populus angulata, 

 Populus argentea, 

 Pcpulus candicans, 

 Populus grandidentata 

 Populus hudsonica, 

 Populus monilifera, 

 Populus tremuloides, 

 Salix ligustrina, . 

 Salix lucida, 

 Salix nigra, 

 Virgilia lutea, 



Pawpaw. 



Button Wood. 

 Carolinian Poplar. 

 Cotton Tree. 

 Heart-Leaved Poplar. 

 Large American Aspen. 

 American Black Poplar. 

 Virginian Poplar. 

 American Aspen. 

 Champlain JVillow. 

 Shining JVillow. 

 Black Willow. 

 Yellow Wood. 



4th. Grafting, in forest-tree propagation, is chiefly had 

 recourse to for those varieties of trees which lose their distinctive 



