PROPAGATION. 283 



years, e shows where the present layer is to 

 be detached. The thallons should be athallized 

 in the usual manner. 



This is quite a different thing from laying a 

 cane in the ground, and letting all the buds 

 grow that will ; but it is the way to make good 

 layers. Not more than four plants should ever 

 be taken from one layer, and two or three will 

 generally be much better. This number can 

 not be exceeded with any hope of making good, 

 well-rooted plants. The plants must be taken 

 up in the fall, and divided by cutting off the 

 unrooted portion of the old cane. 



Grafting. The native vine is sometimes, 

 though not often, propagated by grafting. This 

 process for the vine possesses very few of the 

 advantages it has for the apple, pear, and some 

 other fruits. There is seldom any need for it, 

 for we can get fruit quite as soon by planting. 

 In the green-house or grapery, vine grafting 

 succeeds very well; but in the vineyard the 

 cases of failure greatly exceed those of success. 

 The union between the stock and graft is al- 

 ways imperfect ; hence it is best to perform the 

 operation under ground, where the graft will 

 take root, and become an independent plant 



There are several modes of grafting the vine, 



