VOL. II. PLATE XXV. 



FIG. 135. Rhombohedrai Lime-haloide, 



R 1. R 4-00. 2JR OD}. 



g c 



FIG. 136. Rhombohedrai Ruby-blende. 



R-l. ?L+*. P+x. 



I 



a k n 



FIG. 137. Rhombohedrai Tourmaline. 



R. R + 1. P +00. R OD. 



P o s V 



FIG. 138. Rhombohedrai Tourmaline. 



R <. R 1. R. f R + J 



I 



fc n P I 



R 1. R o>. 



FIG. 139. Rhombohedrai Ruby-blende. 



z n 



FIG. 140. Rhombohedrai Ruby- blende. 



R 1. P + x. {R 1. R l}. 



