326 THE FRUIT-GARDEN. [APRIL. 



Or where wall trees are much infested, first pull off all the curled 

 or crumpled leaves ; then get some tobacco-dust, or fine snuff, and 

 scatier some of it over aK the branches, but most on those places 

 where the insects are troublesome. This should be strewed over 

 the trees in the morning, when the twigs and leaves are wet, and 

 let it remain. It will greatly diminish the vermin, and not injure 

 the leaves or fruit. 



But fruit trees are also sometimes attacked by insects of the cater- 

 pillar tribe, contained numerously in a minute embryo state in small 

 webs, deposited on the branches, Sec. animated by the heat of the 

 weather, they soon over-run and devour the young leaves, whereby 

 neither the trees nor fruit prosper in growth ; and which should be 

 attended to, especially in young trees, by picking off the webs, Sec. 

 before the insects animate considerably ; and, if accommodated with 

 a watering engine, as above suggested, you might play the water 

 strongly upon the trees ; so as, in the whole, to diminish the in- 

 crease and spreading"depredations of the vermin, as much as pos- 

 sible. 



Pruning. 



Pruning of all kinds of fruit trees, should be finished, in the first 

 week of this month, if neglected so long, especially, the forward 

 blossoming kinds. See page 206. 



Protecting the blossoms, &c. of Wall-Trees from Frost. 



Your early kinds of fruit-trees, particularly those planted against 

 walls, may in forward seasons, require protection for their blossoms 

 and young setting fruic, from night frosts ; the doing of which, will 

 be found of importance. For the method, see page 212. 



Where the sheltering of these trees is practised, it should be 

 continued occasionally all this month ; for although there are ge- 

 nerally, some fine warm days and nights, yet the weather is so very 

 uncertain at this season, that we often have such severe hard frosts, 

 as to prove the destruction of the blossoms and young fruit, on such 

 of the above trees, as are very forward and fully exposed. 



They may be protected with mats every cold night, and taken 

 down in the morning : if cuttings of evergreens are used, as ad- 

 vised last month, let them remain constantly, till the fruit are past 

 danger. 



General Sjiring treatment of Fruit-Trees, 



For the general spring management of Fruit-trees, see the Fruit- 

 Garden and Orchard last month. 



Grafting, 



For the various methods of grafting, Sec. see the Nursery for last 

 month, and also for this. 



