196 OBSERVATIONS ON THE DISEASES, &c. 



viously written to the Committee by the Commissioners of the 

 Land Revenue, of which I have been favoured with copies^ 

 are, for the further information of the public, inserted in the 

 appendix*. 



Having been thus honoured by the unanimous approbation 

 of persons so respectable for their rank, character, and know- 

 ledge, I proceeded to exert myself in making various addi- 

 tional trials and experiments, to enable me to give farther proofs 

 of the efficacy of my composition, in restoring the powers of 

 vegetation to trees so far decayed as to be of no value as tim- 

 ber, but which, from their situation as a skreen, or as com- 

 posing part of a general uniform appearance in the Royal Gar- 

 dens, it became a desirable object to preserve. Nor were my 

 endeavours less successful in this subordinate experiment, than 

 they had been in those which were directed by circumstances 

 of superior interest ; for I had the very great satisfaction to 

 find, that in consequence of my treatment of trees in that state 

 of decay which has just been specified, a few years growth has 

 filled up unsightly chasms, and restored that uniformity to their 

 local position, which young plants set in their places would not 

 have accomplished in a long course of successive years. 



The report of the committee having been laid before his 

 Majesty, in consideration of the great utility and advantage 

 which must arise to the country at large from the use of this 

 composition, his Majesty was most graciously pleased to order 

 a reward to be given to the author, for making known to the 

 public the materials of which it is composed, with the method 

 of preparing it, as well as the mode of its application ; and, 

 in order to diffuse the benefits of this discovery throughout 

 the kingdom, an advertisement f has been inserted in the 

 London Gazette, and in most of the town and country news- 

 papers. 



The very great importance to this country of securing a 

 continued succession of good, healthy, and well-growing forest- 

 trees, producing sound, unblemished timber, for supplying 

 the various wants of the public, must be evident to every man's 

 reflection ; nor need it be observed, that numberless large 

 trees, in the woods, parks, and forests, of this kingdom, are, 

 from various causes, rendered unfit for use, and the timber 

 so much damaged as to occasion a considerable diminution in 

 its value. This evil arises, in some instances, from unskilful 

 management, and in others from external accidents ; among 



* See No. 5, of the Appendix, 

 t See No. 6, of the Appendix. 



