50 PHYSIOGRAPHY. CLASS n. 



Sulphur, or Red Orpiment. Man. p. 294. Rothes 

 Rauschgelb. WERN. Hoffm. H. B. IV. 1. S. 224. 

 Realgar. HAUSM. I. S. 210. Realgar. LEONH. S. 166. 

 Arsenic sulfure' rouge. HAL Y. Traite', T. IV. p. 228. 

 Tabl. comp. p. 109. Traite^ 2de Ed. T. IV. p. 247- 



Fundamental form. Scalene four-sided pyramid. 



P = { J|JI 5 y } , 142 59^ 62 44'. Inclination 



of the axis = 4 1' in the plane of the long dia- 

 gonal. Vol. I. Fig. 41. AP. 



a : b : c : d = 14-2 : 38-55 : 29-25 : 1. 

 o- i r P fW ) (130 1') r> 



Simple forms. _ { % , } = ( , 3r ^ J ; P + oo 



196 36' 



(f r + (3D) 3 (^) = 113 2(X ; (Fr + x) 7 (w) = 

 90 48' ; (? + QD)^ = 124 30' ; (Pr -f- oo) 5 (v) 



= 43 52'; fr-hoo(.9); Pr + oo (M). 

 Char, of Comb. Hemi-prismatic. Inclination of 

 P *- QD on f r -f QO = 86 59'. 



Pr 

 Combinations. 1. . P + oo. Sim. Fig. 44., 



reversed. 

 9._-| r . |. P-f-x. (Pr+oo). Fig. 48. 



P (Pr)* _?r _P _ (P 



" ~ 



{. P 4- ct>. (Pr + oo)-\ (Pr 4- oo) 3 . 



