14 A SYSTEM OF 



b. Whitifh Yellow, is duo; at Balfberg irt 



Skone in Sweden, and in the Venetian 



territories. 

 r. Flem-coloured, found in loofc mafTes in 



the corn-fields in the province of Upland 



in Sweden. 



d. Reddim-brown, found in the ifland of 

 Oeland, the province of Jemtland, at Rett- 

 wick in the province of Dalarne, and 

 at Kimnekulle in the province of Wefler- 

 gottland in Sweden. 



e. Grey, at the fame places. 



/. Variegated with many colours, found in 

 Italy, at Blankenburg, and many other 

 places, and is particularly called Marble *. 



* Though it may difpleafe many, yet I muft own, I can- 

 not find any characters whereby a marble is to be diftinguifh- 

 ed from a limeftone; and I infift upon it, that nothing but 

 the colours and the texture of the particles diftinguifh the 

 kinds of limeftone. But as Nature has eftablifhed no rank by 

 colours, and has made every fclid limeftone equally capable 

 of a polifh, before they are fpoiledby decaying or decompof- 

 ing; it is, therefore, out of this fpecies of fclid limeftone, that 

 fuch as ftrike the fancy molt, ought to be chofen for orna- 

 ments, under the name of Marble. 



It belongs to the fubterranean geographers to examine, if 

 this folid limeftone is ever found otherwife than in ftrata, and 

 without being mixed with any heterogeneous bodies, that 

 likewife have been changed into a calcareous fubftance. 

 Here, in the northern parts of the world, it is only found in 

 fuch a manner as fhews it was formed in ftrata, by water's 

 taking up and carrying its particles, and afterwards deposit- 

 ing them in form of a fediment, juft as a flime or mud 

 (which is the flneft particles of pounded rocks) gathers to- 

 gether at the ftamping mills ; and as they are thus formed in 

 the water, there always are heterogeneous parts along with 

 them. Thefe heterogeneous fubrtances are, however, in too 

 fmall a quantity, to be capable of having changed the whole 

 mafs into a calcareous fubftance (as fome pretend) ; not to 

 mention thofe circumftances, which, in other refpe&s, make 

 fuch an opinion very improbable. 



g. Black, 



