CO 



OF THE 



MECHANICAL 



CAUSES 



OF 



CHYMICAL 



PRECIPITATION. 



CHAP. I. 



BY" Precipitation is here meant 

 fuch an agitation or motion of 

 a heterogeneous liquor, as in 

 no long time makes the parts of it 

 fubfide, aad that ufually in the form 

 of a powder or other confiftent bo- 

 dy. 



A 4 As 



