ARBORICULTURE. 



343 



former to one of the latter ; a little finely-chopped straw is added 

 with advantage. The clay should be placed on the grafted parts 

 an inch thick on every side, and extend about half an inch above 

 and below the union of the stock with the graft. It is a 

 highly useful practice to draw earth up round the clay so as to 

 cover it entirely from the sun and air. Another mode, called 

 saddle grafting, is perhaps better adapted for forest 

 trees than the foregoing, but it takes up more time 

 in the performance. The stock should be cut so 

 as to leave the top in the form of a wedge 

 (a, Plate 106); the scion split at the lower end, 

 and each side of the incision pared obliquely, so 

 as to form the two divisions into tongue-like pro- 

 cesses (b) ; these are then seated on the wedge 

 and made to fit accurately to each side of it. The 

 after operations of tying and claying are the same as in the 

 former mode. The trees which come under the forester's care 

 that require to be reared by grafting are the following. 



plate cvi. 



Fagus sylvestris 

 Fraxinus americana, . 

 Fraxinus platycarpa, . 

 Fraxinus quadrangulata, 

 Fraxinus sambucifolia, 

 Fraxinus tomentosa, 

 Fraxinus Viridis, 

 Ilex opaca, . 

 Malus coronaria, . 

 Planera ulmifolia, 

 Populus canadensis, 

 Populus candicans, 

 Quercus Prinus Chinquapin 

 Robinia viscosa, . 

 Ulmus alata, 

 Ulmus americana, 

 Ulmus rubra, 



The stocks for these t 



White Beech. 

 White Ash. 

 Carolinian Ash. 

 Blue Ash. 

 Black Ash. 

 Red Ash. 

 Green Ash. 

 American Holly. 

 Crab Apple. 

 Planer Tree. 

 Cotton Wood. 

 Heart- Leaved Poplar. 

 Small Chesnut Oak. 

 Rose- Flowering Locust. 

 Wahoo. 

 White Elm. 



Red or Slippery Elm. 



ees should be raised from seed of the com- 

 mon species, to which each variety is nearest allied, for the nearer 

 the connection of the stock with the graft the more lasting is the 

 union and more perfect the growth. In trees that have been 

 grafted on unsuitable stocks, we frequently see the base of the stem 



