SECT. VII. 



Of animal manures. 



PART III. 



SECT. I. 



effects of different fubjtances with regard 

 to vegetation. 



SECT. II. 



Of the food of vegetables. 



PART IV. 



SECT. I. 

 Of opening and pufoerifing the foil. 



SECT. II. 



Efe&s of the atmofphere* 



SECT. III. 



Change offpecies. 



SECT IV. 



Of ploughing. 



SECT. 



