48 PHYSIOGRAPHY. CLASS II. 



Combinations. 1. P. P + QD. (Pr -f oo) 3 . Sim. 

 Fig. 36., without n and x. 



2. Pr. P. (f r + x) 5 . Pr + oo. Fig. 17. 



3. Pr. P. (Pr) 3 . P + cc. (Pr+ oo) 3 . Pr + QD. 

 All of them from Tajowa, Hungary. 



Cleavage, Pr + oo, highly perfect ; the faces of 

 cleavage are streaked parallel to the edges of in- 

 tersection with Pr -}- QD, parallel to which there 

 are likewise some traces of cleavage. Fracture 

 scarcely observable. Surface, Pr + QD, rough, 

 but even ; all the other faces are streaked paral- 

 lel to their edges of combination with P r -f- oo, 

 and generally uneven. 



Lustre metallic-pearly upon the perfect faces ' of 

 cleavage, for the rest resinous. Colour several 

 shades of lemon-yellow. Streak lemon-yellow, 

 generally a little paler than the colour. Semi- 

 transparent ... translucent on the edges. 

 Sectile. Thin laminae are highly flexible. Hard- 

 ness = 1-5 ... 2-0. Sp. Gr. 3480, a cleav- 

 able variety. 



Compound Varieties. Reniform, botryoidal, and 

 other imitative shapes : composition curved lamel- 

 lar, faces of composition commonly rough. Mas- 

 sive : composition granular, of various sizes of in- 

 dividuals ; faces of composition uneven, often irre- 

 gularly streaked. 



OBSERVATIONS. 



I. Orpiment and Realgar, the prismatoidal and the he- 

 mi-prismatic Sulphur, are improperly united within one 



