156 TREATISE ON THE CULTURE &c. 



knife, or such a long knife as I have had made on purpose, es- 

 pecially for wall-trees, where the draw-knife cannot be applied, 

 next the wall. The knives and other tools for dressing decayed 

 trees will be described hereafter^. When you see it necessary 

 to take all the outer bark oiF, you must cover the stem, &c. with 

 the composition and powder, patting it gently down, as in the 

 case when large limbs are cut off. 



If the above wash be repeated in autumn, after the fall of 

 the leaf, it will destroy the eggs of a great many insects that 

 hatch in autumn and winter. This washing will be found of 

 great service to all kinds of fruit and forest-trees whatever. 



t See plate 13. 



