20 A SYSTEM OF 



et act do vitrioli mixta. Leberftein of the 

 Germans and Swedes. Lapis hepaticus. 



This (lone fometimes readily, at other 

 times only when rubbed, fmells like the he- 

 par fidphiiris^ or gun-powder. It excites no ' 

 effervefcence with acids, and is a medium 

 between the gypfum and the foetid (tones of 

 the laft fection, to which it has, however, ge- 

 nerally been clafTed, although no lime can be 

 made from it ; whereas they are the fitteft of 

 all the different limeftones to be burnt in- 

 to lime. It is found 

 A, Scaly. 



i. With coarfe fcales. 



a. Whitifh yellow, from Stollert at the 

 mine called GottefhulfFe in der Noth 

 at Kongfberg in Norway. 

 2. With fine glittering or fparkling fcales. 

 a. Black, is found in form of kernels 

 or balls in the alum-flate at Andra- 

 rum in the province of Skone *. 



* The method that Nature takes in combining thofe mat- 

 ters which compofe the liver-flone, may, perhaps, be the 

 fame, as when a lime-Hone is laid in a heap of mundic, while 

 it is roafting : becaufe there the fulphur unites itfelf with the 

 lime-Hone, whereby the limeflone acquires that fraell com- 

 mon to liver of fulphur, inftead of which the vitriolic acid 

 alone enters into the formation of gypfum. How the ful- 

 phur combines itfelf may likewife be obferved in the {late- 

 ralis or kernels from Andrarum alum mines, where it 

 fometimes combines itfelf with a martial earth, of which 

 this Hate abounds, and forms therewith pyrites within the 

 very Hate-balls. 1 have called this fpecies the Liver ftdne t 

 notwithstanding that name, by reafon of its colour, has be- 

 fore perhaps been given to fome other kind ; but as (in my 

 opinion) the colour is a circumftance of very little or no im- 

 portance in mineralogy, fo as not to deferve to be taken no- 

 tice of, in preference to other characters of more confequence, 

 I hope my boldnefs herein will be excufed. The foetid or 

 fwine-ftones, and the liver-ltone, are, in regard to the ftruclure 



of 



