Influence of Season on Crops. Fall ploughing, fcfc. 101 



liberty of spreading it this last time, before my return 

 home, on about two acres.* 



I am dear Sir, very 



sincerely Jours, &c. 



Jc^in Adlum. 

 The Hon. Richard Peters. 



POSTSCRIPT. 



As I observed a communication from mv old friend. 

 T. Matlack, Esq. in the III. Vol, of the Philad. Agric. 

 Memoirs, on the cultivation of the vine, 1 Avxote him 

 enclosing two letters from Mr. Jefferson to me, to shew 

 him that there was another grape, that he had not menti- 

 oned, which 1 thought deserved some attention. When I 

 described the grape to Mr. Bartram near Philadelphia, 

 he informed me that it was found by governor Penn's 

 gardner somewhere near Schuylkill and was called the 

 Alexander grape. In Mr. Matlack 's r ply to me fie says. 

 " You have proved that the Alexander-grape, isiavalu- 



* I have many times in my life, used oyster shells calcined, and pow- 

 dered raw, or unburnt. I have always believed the shell liane to be 

 three or four times weaker than our common stone lime. ^c ope- 

 ration is more immediate, as is the case with all mild lime ; but its du- 

 ration is much shorter. For top dressing;, the powdered pyster shells 

 lire excellent. But 40 or 50 bushels of the powder, are requited for 

 a complete dressing. 



That all eartlls impregnated with sulphur, are manures, is an old 

 opinion of mine; supported by experience) and the concurrence of 

 respectable men. 



H. Peters . 



