Cinders have been and are still much favoured for this purpose.
A few persons reside on the little island Allegranza, a mass of lava and cinders ejected at various times from a now extinct volcano, the crater of which has still a well-defined edge.
Coals, cinders 4,267,172 3,406,535
The two principal ones necessary to salvation are baptism and the Eucharist; then come the water of aspersion and the wearing of cinders, and so forth; these advance a man in sanctity.
Pompeii was merely covered with a bed of lighter substances, cinders, small stones and ashes, which fell in a dry state, while at Herculaneum the same substances, being drenched with water, hardened into a sort of tuf a, which in places is 65 ft.