^56 Jlotations and Changes of Crops defended. 



tices succeed for a time, or under particular circum- 

 stances. Wandering from settled habits, known by 

 experience to be salutary, will create confusion and 

 uncertainty ; and baffle every past and future endea- 

 vour, to reduce the art of husbandry, to any unques- 

 tionable system, or fixed principles. 



I do not feel the less obliged to Mr. Cassat, for the 

 laudable pains he has taken to furnish information ; 

 ■whatever I may think on the subject of it. It was a 

 leading motive with us, in the establishment of our 

 society, that facts, on all sides of agricultural questions, 

 should be collected and promulgated ; to enable every 

 farmer to judge for himself; according to the circum- 

 stances in which he is placed. The mere point of de- 

 terioration of grain, is not the sole question. The ad- 

 vantages of rotations, and changes of crops, or what is 

 called convertible husbandry, reach far beyond any 

 consideration, in which that point is involved. 

 Your very obedient servant, 



Richard Peters. 

 Dr. James Mease. 



Secretari/ of the Philad. Agric. Soc. 



