"Of Sulphur, Pliny states, there are four kinds, but he makes no very intelligible characterization of their differences. "Live" sulphur (sulphur vivum), ocurring in masses or blocks is the only kind used in medicine. The others are used respectively by fullers, for the fumigation of wool, and the preparation of lamp wicks (...evidently ...as we use it in matches). Sulphur was also used in religious ceremonies, and for fumigating houses, and for fumigating (bleaching) cloth. The virtues of sulphur are to be perceived in certain hot mineral springs, and there is no substance that ignites more readily, "a proof that there is in it a great affinity for fire.""