338 INSECTS AND DISEASES. 



After the upper part of the tree is done, it 

 will likewise be necessary to pay attention 

 to the roots, in order to destroy those that 

 have descended into the ground. The means 

 which I have adopted with the greatest suc- 

 cess are, about one week previous to the time 

 of laying the composition upon the upper 

 part of the tree, a quantity of necessary ma- 

 nure is put into a tub and half that quantity 

 of soot. These mixed together with an ad- 

 dition of strong soap suds; remain together 

 for one week, and are stirred up every 

 day during that period. The mixture is 

 then poured over the roots of the tree for 

 five or six feet round the bole. The be- 

 forementioned applications will generally 

 at once completely destroy this insect. In 

 very bad cases a repetition may be necessary 

 the winter following. After the insect is 

 destroyed, the trees may have the compo- 

 sition adapted to each sort applied, as di- 

 rected regularly to be laid on. When Peach, 

 Nectarine, or Apricot trees are infested by 

 this insect, the composition as before directed 

 to be applied to the upper part of the tree, 

 must be made weaker, by putting eight gal- 

 lons of water to the quantity of ingredients 

 described. Standard trees may be treated 

 in every respect as wall trees. 



There is another insect of the aphis tribe 

 which infests Peach and Nectarine trees, its 

 appearance is a dark brown, and its form is 



