The white fatty matter left in filtering spermaceti oil from head matter, further purified by boiling a short time in a ley of subcarbonate of pot-ash, melting it, and pouring it out into moulds, crystalline, with a avity in the centre, lined with crystals; used as a pectoral, mixed with sugar; wholesale 2s. 8d. the lb; retail 4s.6d. the lb, ground 5s. 8d.
Source
Samuel Frederic Gray. A supplement to the Pharmacopoeia being a complete dispensatory and manual for medical practitioners and retail druggists. London, 1831.
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