Notice of a new Variety of Ulmus suberosa, fyc. 147 



opportunity of describing a mode of using such slender grafts, 

 which I have sometime practised with singular success, and 

 which I think I can confidently recommend to the attention 

 of those gardeners, who are in the habit of propagating by 

 grafting species of trees, which often disappoint the hopes of 

 the most skilful operator. In pointing out the advantage of 

 this mode of grafting, which is not new,* but which, I believe, 

 has rarely, or never, been properly executed, it will be neces- 

 sary that I describe the motion of the sap, as I conceive it to 

 be, at the period when grafts are most advantageously inserted. 



The Graft first begins its efforts to unite itself to the 

 stock just at the period when the formation of a new internal 

 layer of bark commences in the spring ; and the fluid, which 

 generates this layer of bark, and which also feeds the inserted 

 graft, radiates in every direction from the vicinity of the 

 medulla, to the external surface of the alburnum. The Graft 

 is of course most advantageously placed when it presents the 

 largest surface to receive such fluid, and when the fluid itself 

 is made to deviate least from its natural course. This takes 

 place most efficiently, when a graft of nearly equal size with 

 the stock is divided at its base and made to stand astride the 

 stock, and when the two divisions of the graft are pared 

 extremely thin, at arid near their lower extremities, so that 

 they may be brought into close contact with the stock (from 

 which but little bark or wood should be pared off) by the 

 ligature. I have adopted this mode chiefly in grafting Cherry 

 trees, and I have rarely ever seen a graft fail, even where 

 the wood has been so succulent and immature as to pre 

 elude every hope of success by any other mode. I send 

 * It is generally known under the name of Saddle-grafting. 



