28 ©ftfce^ecijamcat Cauft* 



recited, for the moft part friendly 

 unite into fuch Cryftalsof Nitre for 

 the main, as they were obtained 

 from ; And though this notion of the 

 Chymifts, if well explained, be ap- 

 plicable to far more inftances than 

 the propofers of it feemed to have 

 thought on, and may be made good 

 ufe of in Pra&ice , yet I take it to 

 be fuch as is not true Univerfally, 

 and ,where it is true, ought to be ex- 

 plicated according to Mechanical 

 Principles. For, if the particles of 

 the Menftruum and thofe of the 

 Precipitant be fo framed, that upon 

 the aftion of the one upon the other, 

 there will be produced Corpulcles 

 too big and unwieldy to continue in 

 the ftate of fludity, there will infue a 

 Precipitation: But if the confutati- 

 on of the corpufcles of the Precipi- 

 tating and of the Diffolved body be 

 fuch, that the Precipitant alfo it felf 

 is fit to be a Menftruum to diflblve 

 that body in 5 then, though there be 

 an union of the Salts of the Precipi- 

 tant 



