53° CLAY GENUS. Geognostic Situation. It occurs in primitive mountains, and is fubordi- nate to clay Hate. It is ufually accompanied by alum ilate, with which it is indeed nearly allied. Geographic Situation. It is found in France, Bareuth, Spain, Italy, Ice land and Scotland, as in the ifland of Ifla, one of the Hebrides*. Ufe. When of a middling degree of hardnefs it is ufed for drawing. The bell is laid to be found in Spain and Italy. Obfervation, It burns red: * Mineralogy of e Scottifli itlcs. nineteenth