9 PHYSIOGRAPHY. CL ASS II. 



typous Lime-stone. Man. p. 65. Bitter-spar. Pearl- 

 spar. Dolomite. Magnesian Limestone. PHILL. p. 

 163. 165. 166. Braunspath. Dolomit. Rautenspath 

 (in part). WERN. Hoffm. H. B. III. 1 S. 48. 57. 60. 

 Braunkalk. Bitterkalk. HAUSM. III. S. 947- 960. 

 Bitterkalk (in part). DolomL. Braunkalk. LEONH. 

 S. 579, &c. Chaux carbonate'e aluminifere. Ch. c. 

 ferrifere perle'e. Ch. c. magne'sifere (in part). HAUY. 

 Traite', T. II. p. 173. 175. 187. Ch. c. ferro-manga- 

 ne'sifere (in part). Tabl. comp. p. 5. Ch. c. ferrifere, 

 mangane'sifere rose, ferro-manganesif ere, magne'sifere. 

 Trait^, 2de Ed. T. I. p. 418. 420. 421. 427. 



Fundamental form. Rhombohedron. R = 106 15'. 

 Vol. I. Fig. 7. R. G. 



a = V 2-0779. 

 Simple forms R <x (o) ; R 1 (g) = 135 



5T ; R (P), Zillerthal, Salzburg. R + 1 (/) 

 = 79 36', Gotha, Saxony. R -f- 2 (m) 66 

 T, Hall, Tyrol; P + oo (u) ; (P) 3 (r) = 104 

 56', 144 3%, 132 5'. 



Char, of Comb. Rhombohedral. * 



Combinations. 1. R. oo. R -f- 2. Fig. 113. 

 Hall. 



2. R 1. R. Miemo, Tuscany. 



3. R QD. R. R + 2. Fig. 115. Hall. 



4. R oo. R. R + 1. (P) 3 . P + oo. Miemo. 

 Cleavage. R, perfect. Traces of R 1. Frac- 

 ture conchoidal. Surface. R - OD deeply 

 streaked, parallel to the edges of combination 



* According to a recent observation of Mr LEVY, the 

 scalene pyramids enter into the combination only with half 

 the number of their faces, pairs of them being parallel to 

 each other. H. 



