of -Cftymtral p^ectpttartotn ai 



floated there. Thefe particulars I was 

 willing to mention here,, that I might 

 give an inftance or two ofthofe pre- 

 cipitations^ that I formerly fpakeQf 

 as improperly fo called. And here 

 I mult not decline taking notice of a 

 Phenomenon, that fom^times occurs 

 in Precipitations^ and at firft fight 

 may feem contrary to ourDo&rine 

 about them. For now and then k 

 happens, that after fome drops of the 

 Precipitant have begun a Precipita- 

 tion at the top or bottom of the Sol- 

 ventj one (hakes the veflel, that the 

 Precipitant may be the fooner diffu- 

 fed through the other liquor but 

 then they are quickly furprized to 

 find, that infteadof haftning the com* 

 pleat Precipitation^ the matter al- 

 ready precipitated difappears 5 and 

 the folvent returns to be clear, or, as 

 to fenfe, as uniform, as it was before 

 the Precipitant was put into it. B u 

 this Phenomenon does not at all crpfs 

 our Theory. For, when this hap- 

 pens 5 though that part of the Solvent 

 to which the Precipitant reaches, is 



difabled 



