APPENDIX. 



THE following papers, being tranfmittcd by candidates 

 for the premium which was offered by the fociety 

 •' for the befl: method of preventing the premature decay of 

 peach trees," were confidered as very deferving of public 

 attention. It was therefore determined that the premium 

 oi Jixty dollars fhould be divided between their refpective 

 authors, and that the papers flaould be inferted in the 

 Tranfadtions. 



No. I. 



Account of a Method of Preventing the prematu '■e Decay 

 of Peach Threes. By John Ellis, of New-Jerfey. 



THE decay of peach trees is owing to a worm, 

 which originates from a large fly, that re- 

 fembles the common wafp : this fly perforates the bark 

 and depofits an egg in the moift or fappy part of it. 

 The molt common place of perforation is at the furface 

 of the earth, and as foon as the worm is able to move, 

 it defcends into the earth, probably from an inftincffive ef- 

 fort to avoid the winter's froft. This may be afcertained by 

 obfervation, the traft of the worm from the feat of the 

 egg being vifible at its beginning, and gradually increaf- 

 ing, in correfpondence with the increafmg fize of the 

 Vol. V. U u worm : 



