OBSERVATIONS ON THE DISEASES, &c. 



latent caufes of thofe various defects and difeafes to which all 

 ^kinds of trees are more or lefs fubject, and the injuries re- 

 fusing from them, by obftructing the fertility of fruit-trees, 

 and diminishing the quantity, as well as quality, of timber in 

 foreft-trees. 



Having acquired a competent knowledge of the evil in all 

 its appearances and effects, my attention was directed toward 

 -the difcovery of fuch a remedy as might not only counteract 

 the progrefs of thefe difeafes in fruit and foreft trees, but alfo 

 afford nature fuch powerful affiftance, that fhe might be 

 enabled to renovate, as it were, fertility in the one, and found 

 timber in the other. Of my fuccefs in thefe endeavours to 

 promote the general advantage of this country in a matter fo 

 connected with its befr interefts, I have that clear conviction 

 which, I truft, will be hereafter communicated to every part 

 of the kingdom where the application of my experience fhall 

 be made and profecuted. 



The inquifitive fpirit which accompanied my profeflional 

 purfuits, with the natural defire of improving my private 

 practice in the management of the various kinds of trees 

 under my care, led me by degrees to this difcovery. The 

 idea, however, of making it public never occurred to me, till 

 the many trials and experiments that I had repeatedly made, 

 both on fruit and foreft trees, in the Royal gardens at Ken- 

 sington, had attracted the notice of many perfons of high 

 rank, as well as philofophical eminence, and prompted them 

 to favour it with a particular examination. Their inveftiga- 

 tion of my procefs and method of curing the defects and inju- 

 ries which, from various caufes, thofe trees had fuftained, by 

 producing conviction in their minds, gave the moff. flattering 

 encouragement to me. Indeed, the application of the re- 

 medy 



