484 



MEASUREMENTS OF CRYSTALS. 



aUARTZ. (Continued.) 



Fig. 182. 



Pon/or2:on/ 141 ^40' 



Fig. 183. 



P ono 160°15' 



ono 125 10 



TABULAR SPAR. Fig. 184. Page 270. 



Fig. 184. The primary, a right rhombic 

 prism ? 

 M on M' 95°20' 



SERPENTINE. 



273. 



Figs. 185 to 189 inclusive. Page 



Fig. 185. The primary, a right rectan- 

 gular prism. The remaining figures 

 are secondary forms, but the angles 

 have not been determined. 



CHONDRODITE. Fig. 190. Page 281. 



Fig. 190. The primary, a right oblique 

 pri.'sm, the greater angles being 112° 

 12'. 



TALC. 



Fig. 191. Page 284. 



Fig. 191. The primary, aright rhombic 

 prism. 

 M on M' 120° 0' 



PYROXENE. Figs. 192 to 223 inclusive. Page 286. 



Fig. 192. The primary, an obhque rhom- 

 bic prism. 



M on M' 87° 5' 



M or M' on P 100° 10' or 100 25 



Fig. 193, et seq. 



MorM'onr 133°35' 



M' on Z 136 15 



M ono 145 9 



M or M' ons 121 48 



P onr 106 15 



F ons 150 



P on t 147 48 



oono 95 28 



o on r 118 59 



o ons 156 39 



r on M 126 36 



s ons 120 38 



M on M 131 8 



