of Alcali and £ct'Dum* 3 5 



And yet, although what I have 

 faid in this Excurfion be but a part 

 of what I could fay ? I would not 

 be thought to have forgot what [ 

 intimated at the beginning of it. 

 For though the Reafons I alledged 

 keep me from acquiefcing in the 

 Dottrine of Alcali and Acidum^ as 

 'tis propofed under the notion of a 

 Philosophical Hypothefis^ fuch as the 

 Gartefian or Epicurean, which are 

 each of them alledged by their em- 

 bracers to be Mechanical ^ and of 

 a very Catholick extent? yet I de- 

 ny not , that the Confideration of 

 the Duellifts ( or the two jarring 

 Principles of Alcali and Addum) 

 may be of good ufe to Spagyrifts 

 and Phyfitians 5 as I elfewhere fur* 

 ther declare. Nor do I pretend by 

 the paft difcourfe that queftions one 

 Do&rine of the Chymifts, to beget 

 a general contempt of their Noti- 

 ons 3 and much lefs of their Experi- 

 ments. For the operations of Chy- 

 miftry may be mifapplied by the er- 

 G a roneous 



