ON THE PROPAGATION OF VINES. 65 



of solar heat on its surface, and also an exemption 

 from the increased action of violent winds, which is 

 sure to be generated in some way or other, if the wall 

 be bnilt otherwise than in a straight line. 



CHAPTER YIII. 



ON THE PROPAGATION OF VINES. 



Vines are propagated in the open ground, by layers, 

 and by cuttings. 



By layers. This is the most expeditious method 

 of raising vines, provided the shoots be laid down in 

 2mts^ and j^lanted out the same summer. But vines 

 raised from shoots laid down in the open ground, 

 seldom ripen their roots well, and are, tlierefore, in- 

 ferior to those raised from cuttings. There is also 

 another objection to this mode of propagating vines. 

 No shoots of a well-established vine can be laid down 

 in a border, without the roots growing amongst those 

 of the parent vine. When the proper season arrives 

 for the removal of the young plant, the ground re- 

 quires to be digged to the depth of eighteen inches, 

 in order to take up its roots as entire as possible. 

 Now, a vine border cannot be digged to this depth, 

 nor indeed anything like it, without very greatly 

 injuring the roots of the parent vine. For this rea- 

 son, therefore, and on account of the roots of young 

 plants so raised, frequently dying off to a considerable 

 extent in the ensuing winter, through not being suffi- 

 ciently ripened, the raising of vines by layers in the 

 open ground may be regarded as an inferior method 

 of propagation. 



To raise vines by laying down the shoots in pots, 

 to be planted out in the current summer, the follow- 

 6* 



