Plate LIV. 



Figs. 1-3. 



Realgar. 



mercur, utah. 



Forms: a (100), b (010), c (001), q (Oil), r (012), y (032), x (101), z (201), 

 fc (610), I (210) /? (320), w (430), jj (650), m (110), v (230), p (120), d (250), / (212), 

 * (111), « (212). 



Fig. 4. 



Realgar. 



mercur, utah. 



Basal projection of forms observed. 



