308 OBSERVATIONS ON THE DISEASES, &c. 



2. If you fhould be of opinion that oak-trees would fufTaim 

 any material detriment, or become in any degree defec~tive r 

 from the caufe above ft a ted, do you know any means by 

 which fuch detriment may be effectually prevented, in trees 

 which have remained in that ftate from four, five, or fix: 

 months to a year ; fo as to reftore the bark, and prevent the 

 trees from becoming defective, and unfit for the ufe of the 

 navy ? 



3- If you fhould be able to fuggeft a complete remedy for 

 fuch defects, and if the remedy would be effected by means 

 peculiar to yourfelf, and unknown to others, we wiih to know 

 if you would be willing to undertake to apply it, or fuper- 

 intend or direct: the application of it by perfons properly in- 

 ftructed by yourfelf, to any number of trees that might re- 

 quire it in any of the royal forefts ? 



4. In cafe there fhould be occafion to apply fuch a remedy 

 to a very confiderable number of trees in the ftate above de- 

 fcribed, we wilh to know, as nearly as poflible, what expence 

 the application 1 would be attended with-, by the hundred, or 

 thoufand, or any given number of trees, including labour, 

 materials, and every incidental expence. 



We fhall be glad to receive an anfwer to thefe enquiries 

 with all convenient fpeed, and are, 



Sir, 



Your molt obedient Servants^ 



JOHN CALL. 

 JOHN FORDYCE. 



fel Forfydk 



