Ohservatiom on the Pea Flij^ ^c. 323 



I have lately reason to recommend fresh oyster shells, 

 pulverized in the manner that plaister of Paris is pre- 

 pared for manure, put about the roots of peach and plum 

 trees &:c. as eftectual in keeping oflf the peach Zt/gce'na^ 

 and also Cerambix which destroys apple trees. 



Quere, ^\■hether o}'ster shells powdered, would not 

 be found to be as good a manure, as plaister or lime? 

 perhaps more lasting, and less expensive as they could 

 be prepared with less labour and expence," 



W. B. 



