THE 



A N A L Y S I S 



OF 



LITHOMARGE. 



igitur not corfrribitt circum undiquc fepti 

 i* dtcut ac for mam t txttrnutnquf nltorem t 

 Jlfiramur tantum t fummofjue in certtct rerum 

 LuA'imm f Intcrnam cur non penetramut in *dcm 

 Natur*, atquf adyt'u immitti pofcimut tftfit ? 



ANTI-LUCRETIUS. 



. i. The general Cbarattcr of Lithomargc. 



JL HE celebrated A. F. Crondftcdt, in his Mi- 

 neralogy t diftinguifhes among argillaceous earths, 

 a particular kind under the name of Litbomarge^ 

 to which he afcribes the following characters * : 

 j/? f When dry its furfacc is flippcry and fmooth 

 like hard foap. 'idly, On being thrown in fmall 

 portions fucceffively into water, it feparates in a 



few 



