472 
MEASUREMENTS OF CRYSTALS. 
/ 
CALCAREOUS SPAR. (Continued.) 
Pong - . 143° O' 
(The other measurements will be found 
on the preceding pages.) 
Figs. 97 and 98. Compound crystals from 
Rossie, St. Lawrence county. 
Fig. 99. A crystal with a smaller one im¬ 
planted. Rossie, St. Lawrence. 
Fig. 100. A very acute rhombohedron. 
ARRAGONITE. Fig. 101. Page 235. 
The primary, a right rhombic prism. 
M on M'. 110° 5 / 
M or M' on P . 90 0 
GYPSUM. Figs. 102 to 104 inclusive. Page 237. 
Fig. 102. The primary, a right oblique 
angled prism. 
M on T ... 113° 8' 
P on M or T. 90 0 
GYPSUM. 
Fig. 103. 
P on f 
P on l 
f on / 
l on l 
124°41 / 43 // 
108 3 19 
110 36 34 
143 53 22 
ANHYDRITE. Fig. 105. Page 238. 
The primary, a right rectangular prism. 
M on T. 90° O' 
P on M or T. 90 0 
APATITE. Figs. 106 to 113 inclusive. Page 239. 
Fig. 106. The primary, a regular six- 
sided prism. 
M on M . 120° O' 0" 
M on 5 _ ..... 135 0 0 
M on x . 129 13 53 
x on# .. 143 7 48 
