VOL. II. PLATE XXXI. 



FIG. 168. Prismatic Epsom-salt. 



*r. p r . P. ft+i. 



n m I r q t s 



P + oo. r + oo. Pr + oo. 



Mop 

 FIG. 169. Di- prismatic Lead-baryte. 



Poo. P l.Pr. P. (Pr) 3 . f Pr+2. Pr+1. (Pr) 3 . 

 g w M t v e y o 



P+oo. (Pr+oD) 5 . (Pr+oo) 3 . Pr+oo. Pr+oo. 



P u s I h 



FIG. 170. Hemi-prismatic Lead-baryte. 



P P, Pr+1. -L r . * -(J5!. P + oo. 

 2 222 



t z y k v b M 



(Pr + o>) 3 . Pr + oo. Pr + QD. 



a g f 



FIG. 171. Axotomous Lead-baryte. 



P cr ?r "" 1 ?f ^r+1 P--^ (P 2) 4 

 ~ * ~ ~~~ ~ 



f e g h 



i ^nSl Pr-2. Pr-L 

 22 



P o / w 



222 2 



P+oo. <P+OD^. Pr+x. 



F o' c d b 



FIG. 172. Prismatic Cobalt-mica. 



. -. (Pr + oo) ? . (?r+oo) 5 . ?r+oo. Pr + o>. 

 2 2 



M I Jc s T P 



FIG. 173. Rhombohedral K"ouphone-spar. 



R 1. R. R + l. P + oo, 2JR oo|. 



n P r u 



