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T Hough I flail not deny, that, 

 in Grammatical Jiri&nefs 

 Precipitation Jhould be reckon- 

 ed among Chymical Operations' not 

 Qualities y yet I did not much fcruple 

 to infert the following Difcourfe a- 

 mong the Notes about Particular Qua- 

 lities y becaufe many^ if not moji^ of 

 the Phaenomena^ mentioned in the en- 

 fuing Ejfay> may be conjidered as de- 

 pending^ fome of them^upon a power^ 

 that certain bodies have to caufe Pre- 

 cipitation^ and fome upon fuch a Dip* 

 portion to beflruci^ down by others , 

 as may^ if men pleafe, be called Pre* 

 cipitability. And fo thefe differing 

 Affe&ions may with ( at leafi) tole* 

 rable Congruity be referred to thofe 

 that we have elfewhere filed Chy- 

 mical Qualities, 



A 2 Tint 



