Sect. V. Agriculture and Vegetation. 87 



to hinder the volatile particles from flying 

 off. But how can this be done, when 

 there are frefh additions made to the dung- 

 hill every day ? It would indeed putrefy 

 fooner -, but then it muft lofe the influence 

 of the air, by which only it becomes fit 

 nourishment for vegetables. The effects of 

 the air on the dunghill muft be confider- 

 able, as it is fo loofe and pervious a body. 

 I am more inclined to agree with them in 

 another obfervation, that the north and eaft 

 winds mould have free accefs, efpecially in 

 winter, to the dunghill. We mall after- 

 wards fee, that thefe winds are found, by 

 experience, to be more impregnated with 

 the aereal nourifliment than the others, and 

 particularly at that time, 



A s the procefs of corruption, in the com- 

 mon way, goes on very flowly ; and as 

 great part of the dung which is carried out 

 from the dunghill, is not half putrefied, 

 and confequently not fufriciently prepared 

 for vegetables ; it would be of ufe to quicken 

 that procefs, if we knew of any eafy me- 

 G 4 thod 



