EXPLANA'l'ION OF PLATE XX. 



Cerussite. 



Fit(s. 1, 2, 3. Magnet Mine, Tasmania. The crystals are trillings on 

 VI. (110). Fig. 3 is a stereGiJ:ram shewing the distribu- 

 tion of the faces and the chief zones. 



Forms:— r (001). a (100), h (010), m (110), r (130), i (021), k (Oil). 

 .r(012),y; (111 . 



ZiRroN 



Fig. 4 Glen limes, Xew South Wales. 



Fig. 5 Invereli, New South Wales. 



Fig. 5. Boat Harbour, Tasmania. 



Forms —a (100), m (110). y> (111), r (221), « (331), x (131). 



