186 On Peach Trees. 



and by turning and loosening the surface, forward the 

 growth and health of the trees. Apple-trees do not 

 thrive, in the soil favourable to the culture of the peach.'' 



Compare this account, with the actual state of the 

 peach tree^ in our countr}', and judge whether we live 

 in a region favourable to its growth. Mr, Heston's at- 

 tempt at cultivating this tree, in the southern manner, 

 begins already to fail. His trees are evidently infected ; 

 and many are on the decline. The yellows are univer- 

 sally prevalent, this season, throughout the wliole coun- 

 try. I do not wish to discourage perseverance, in the 

 culture of this tree. But, when particular products of- 

 ten fail, they warn us to apply our main strength and re- 

 sources, to other objects, more certain and equally pro- 

 fitable. Let hazaidous cultivation, be collateral and 

 subordinate. 



The mercury^ as mentioned by Dr. Tilton^ for the 

 cure of the disease in peach trees, I have frequently ap. 

 plied to //z/;72<^5. I bored a gimblethole through the 

 bark, and about half an inch into the alburnum^ or sap 

 wood, and inserted a drop or two of crude mercury, so 

 as to be carried through the circulation, with intent to 

 destroy vermin or insects in the bark or fruit. I have 

 sometimes had plenteous crops, apparently from this re-r, 

 medy ; but I have more frequently been disappointed, 



I am, Sir, 



Your obedient servant, 



Richard Peters. 

 Dr. James Mease, 



Secretary Agric. Soc. PhilcaL 



