388 On Scions from the trunks of Apple Trees. 



In experiments which I made many years ago, upon this, 

 and other expended varieties of Apples, I found that the 

 destructive effects of canker were greatly prevented, by 

 digging up the trees once in every three or four years, and 

 applying some fresh unmanured mould of good quality to 

 the roots. The growth of dwarf Apple trees, upon Para- 

 dise stocks, is little affected by this mode of treatment, par- 

 ticularly if such trees have been frequently removed whilst 

 in the hands of the nurserymen, by which their roots have 

 become numerous and short. 



I do not feel confident, that any advantages will be ob- 

 tained by using the Scions I send, instead of the others, 

 taken, as usual, from bearing branches ; but as we certainly 

 do not possess an Apple of equal merit with the old Golden 

 Pippin, the experiment deserves a trial, as it is easily made. 



April 3d, 181 



my dear Sir, 



sincerely yours, 

 Thomas Andrew Knight. 



