Bysmalite, [442], [447].

Calcareous ooze, [36].

Calcareous sinter, [184].

Calcareous tufa, [464].

Calcite, [455].

Caldera, [405], of composite volcanic cones, [126].

Camiguin volcano, birth of, [96], [97].

Campbell, M. R., cited, [178].

Cañons, [160];

box, [214].