466 



MEASUREMENTS OF CRYSTALS. 



STRONTIANIi'E. (Continued.) 



P ona 120° 0' 



on 160 



a on a 120 



CALCAREOUS SPAR. Figs. 55 to 100 inclusive. 

 Page 215. 



Fig. 55. The primary, a rhombohedroii. 



Figs. 56 and 57, secondary forms show- 

 ing the reduction by cleavage to the 

 primary. 



CALCAREOUS SPAR. 



P on P . 105°5' and 74°55' 0" 



P onr 151 3 



c on c 120 



c on^ 116 33 55 



g ong 134 26 



r onr 144 20 26 



r onr' 104 28 40 



r onr" 133 26 



