$o6 Mifcellanea Curio fa. 



Some Waters are indeed fo very clear and 

 iranfparent, that one would not eafily fufpedt 

 any terreflrial Matter were latent in them \ 

 but they may be highly faturated with fuch 

 Matter, though the Eye be not prefently able 

 to decfry or difcern it. 5 Tis true, Earth is an 

 Opake .Body ; but it may be fo far diffolved, 

 reduced to fo extreme (mall Particles, and 

 thefe fo diffufed through the xvatry Mafs 9 as 

 not fenfibly to impede Vifion, or render the 

 Water much the lefs diaphanous. Silver is an 

 Opake* and indeed a very denfe Body j and yet, 

 if perfectly diffolved in Spirit of Nitre, or A- 

 qua Fortis, that is reBificd and thorowly fine, 

 it does not darken the 



^Provided the Silver Menftruum, or render it 



pure 4»<* abfolutely lefs /><?//«c/W than before*. 

 refinM : f the leafl And other Inftances there 

 admixture of Copper are t h at oftentimes great 

 mil produce ablueTin- . . c r\>. 1 



Sure in the Menftru- of Opal* M*t- 



urn-, as that 0/ /one ^ are luftaind in FWj, 

 other Bodies, one dif- without confiderably ftri- 

 ferent. king the Eye, or being per- 



ceiv'djby it. So that were 

 there Water any where found fo pure, that the 

 cjuickeft Eye could difcover in it no terreflrial 

 Intermixture j that would be far fliort of a Proof, 

 that in reality there was none. 



But after all, even the cleareft Water is very 

 far from being pure and wholly defecate, in any 

 part of the World that I can learn. For ours 

 here, I have had an Opportunity of examin- 

 ing it over a good part of England ; and can- 

 not fay I ever met with any, that, however 

 frefli and newly taken out of the Spring, did 

 not exhibit, even to the naked Eye, great nun>? 



berg 



