VOL. II. PLATE XXXII. 



FIG. 174. Prismatic Kouphone-spar, from Au- 

 vergne. 



FIG. 175. Mesolite from Iceland. 



FIG. 176. Paratomous Augite-spar. 



Pr P (Pr) 5 Pr (P) s 



"' 2* ~~2~ ' IT IT 



P s o t u 



(Pr -f QD) 5 . P r + oo. Pr + oo. 



FIG. 177. Horizontal projection of the same. 

 FIG. 178. Pyramidal Copper-pyrites. 



a P g b h 



p + i. JLrr-1 5zZn?. 



c d e 



(^pP 5) 5 _P 



f y 



FIG. 179. Pyramidal Copper-pyrites. 



|. P+l. {P 1. P}. Regular 



composition of five individuals, each 

 of the lateral ones being joined to the 

 central individual, in a plane perpen- 

 dicular to a terminal edge of P. 



