671 



The dung added, Improves ; yet the hot 

 sun shining on the naked soil, is thought 

 to exhale much of the valuable contents of 

 it, and of the ground. 



The above is of the crops of one field 

 during four years ; or of the four fields in 

 one year. The following is a plan of the 

 whole farm (homestead and meadow ex- 

 cepted), with the rotation of its crops in 

 those four fields, during four years, and 

 the moiety in grass or lay old field, dur- 

 ing the ten or twenty years. 



