CALC GENUS. Geographic Situation, It is found at Brienz in Switzerland ; in the moyfl' tains of the 1 yrol and Salzbourg ; and at Taberg if* Wermeland in Sweden, It occurs alfo in chlorite rocks on the banks of Loch Lomond in Scotland. Gbfervations. 1. Brochant and other French mineralogifts are of opinion that this Ipecies and brown fpar, are merely accidental varieties of calc fpar. That this opinion I s unfounded mud be evident to every one who corn* prehends fully the preceding Wernerian defcription s ' 2. The yellowilh variety approaches to fparry it 011 ftone. 3. It is named rhomb fpar from its cryftallization I its former name bitter-fpar, intimated that it contain^ magnefian earth. eight#