S6 The Production and Generation 



accreting more and more according to the things laid 

 therein -, alfo to fiffures and cavities, which often be- 

 come gradually narrower, and, at length, are entire- 

 ly blocked up. The fecond is alfo very plain, 

 as an increafe always implies a free accefs - 9 and, 

 as evidently appears, among other things, in 

 mixt-works, luch as I above initanced in from the 

 Hohenbirck groove, where we fee, that where the 

 ore and glitter, forming weather or damps, have, 

 as it were, ceafed, the ftone- forming, or petrify- 

 ing waters, begin to overlay the glitter with a 

 cruft of [/inter-, and this again ceafing, the /inter to 

 afford a couch to the glitter. 



Here I muft not omit mentioning, that this 

 Hone forms no layers or fhelves, tho' its accu- 

 mulation be by a moving of earthy particles pre- 

 cipitated out of the waters, over each the other ; 

 whence it feparates, not in flakes or leaves hori- 

 zontally, but rather upwards and downwards ; 

 alfo, in breaking, it manifefts a texture, fhewing 

 its increafe to happen fideways, by an apportion 

 of tender threads, almoft in the manner of the 

 Hungarian atlas-vitriol. For, from the /inter from 

 walls, and thus from lime already prepared, which 

 eafily bears being divided into flakes, we cannot 

 conclude to that which is derived from crude 

 lime-ftone, and other unknown admixtures. My 

 reafon for mentioning this, is to obviate fome 

 miftaken notions about the Caroline white coloured 

 itone-ilrata, which are evidently diftinguifhable 

 from each other, not only by the colour, as be- 

 ing beautifully flriped like a piece of cloth, or 

 fillet, but alio by their eafy feparation at the 

 coloured parts : and, doubtieis, the different co- 

 lours mould afford fomething different in their 

 internal mixtion, at leaft in the proportion of it, 

 upon making a due proof of fome of the principal 

 /irate, each apart. 



i 0n 



