Plate XLIX. 



Fig. 1. 

 Calcite. 

 bellevue, ohio. 

 Forms: n (1123), a (4483), y (8.8.T6.3). r (1011), /Jt: (20.11.31.11). 



Fig. 2. 

 Calcite. 

 blackberry mine, joplin, missouri. 

 Forms: e (0112),,/ (0221), M (4051), t (2134), v (2131), E (4156), v: (11.4.15.3). 

 The letters followed by dots are Goldschmidt's ; those without dots, Dana's. 



