210 OBSERVATIONS ON THE DISEASES, he. 



I beg perm'ssion to lay before your Honourable Board 

 several specimens of parts of trees which have been injured in 

 araanner similar to th )se you have alluded to ; others which 

 have been healed by t le method I have before mentioned. But 

 the most effectual means of demonstrating the utility of this 

 application, is the many fruit and forest-trees now growing in 

 his ■Majesty's royal gardens at Kensington,- which I shall be 

 happy to shew you. 



Your Honourable Board, cohsiderrng the shortness of 

 time, will, I tj utt, make every allowance for any inaccuracy 

 in this answer to the letter you favoured me whh, and permit 

 me to subscribe myself. 



With the greatest respect, 



Your most obedient 



Humble Servant, 



WILLIAM FORSYTH, 



To the Honourable the 



Commissioners of the Land Revenue, 



Land Re^senue Office y April 'IS^ lf89» 



SIR, 



E have received your letter of yesterday's date, which 

 contains a very clear and satisfactory answer to our enquiries 

 respecting the effects of injuries done to the bark of oak-trees, 

 and the means of preventing damage to the timber from that 

 cause ; and the specimens sent with your letter afford the 

 most convincing proofs both of the destructive consequences 

 arising from even slight injuries to the bark, when no means 

 are used to prevent them, and of the efficacy of your discovery 

 for preventing and curing defects in timber proceeding from 

 that source ; but we observe that you have not given an an- 

 swer to our enquiry as to the expence which the application of 

 the remedy you have discovered would be attended with, by 

 the hundred, or thousand, or any given number of trees, in 

 case there should be occasion to apply it to a very considerable 

 number: We therefore repeat our request, that you will be 



