(3) on charcoal. Fuses in the reducing flame. (4) in forceps. Fuses with difficulty on edges. Colors the outer flame green. In reducing flame forms BaS, which fuses readily. (5) in borax. Gives the baryta-reaction. (6) in mic. salt. As in borax. (7) with carb. soda. Fuses to a clear bead; then spreads out and is absorbed into the charcoal. The fused mass laid on silver gives the S-reaction. (8) Special reactions. If fused with potassa on platinum, gives the SO^{3}-reaction. * * * * * Mineral. Celestine Formula. [.Sr][...S]. Behavior (1) in glass-bulb. -- (2) in open tube. -- (3) on charcoal. Fuses to a milk-white bead. (4) in forceps. Colors the flame crimson. (5) in borax. Gives the strontia-reaction. (6) in mic. salt. As in borax. (7) with carb. soda. Similar to the preceding. (8) Special reactions. Similar to the preceding. * * * * * Mineral. Witherite Formula. [.Ba][..C]. Behavior (1) in glass-bulb. Decrepitates more or less and evolves Water. (2) in open tube. -- (3) on charcoal. Fuses, effervesces, and is partially absorbed by the charcoal. (4) in forceps. Colors the outer flame intensely green. (5) in borax. Dissolves with effervescence and gives the baryta-reaction. (6) in mic. salt. As in borax. (7) with carb. soda. Fuses to a clear bead; then spreads out and passes into the charcoal. (8) Special reactions. In dilute HCl dissolves with much effervescence. * * * * * Mineral. Strontianite Formula. [.Sr][..C]. Behavior (1) in glass-bulb. Becomes opaque. (2) in open tube. -- (3) on charcoal. As in the forceps. (4) in forceps. Exfoliates and becomes arborescent. The filaments glow brilliantly and fuse on the point. Colors the flame brilliantly crimson. (5) in borax. Resembles the preceding. (6) in mic. salt. As in borax. (7) with carb. soda. As the preceding. (8) Special reactions. As the preceding. * * * * * Mineral. Barytocalcite. Formula. [.Ba][..C] + [.Ca][..C]. Behavior (1) in glass-bulb. As in the preceding. (2) in open tube. -- (3) on charcoal. In powder frits together, but does not fuse. (4) in forceps. Colors the flame green in the centre and red towards the point.