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 sweat. Inwardly, it troubles the stomach and belly, helps bruising and stretching the nerves, and therefore is good for women newly delivered."

Dr. James (1747) describes it as a noble medicine and refers to its chief use for outward application in small-*pox to prevent the pitting. It was melted with oil of almonds, and with this mixture the pustules were kept moist when they began to harden. He says, "Although this is but a modern practice in this distemper, yet Schroder takes notice of its use in his time in smoothing and filling up the fissures or cavities made by blotches and scabs."

Schroder was much puzzled by this substance and was doubtful whether to class it among animal or mineral substances. He decided to include it among minerals. Subsequently it was believed to be the spawn of the whale, and from this belief it acquired its name. Still its origin continued to be discussed. Gesner said it was a milk shed by the whale. Borrichius believed it to be the spinal marrow. Pomet affirms with certainty that spermaceti is the brain of the whale (cachalot). He had not only seen it prepared, but had prepared it himself. He described the process. The brain was melted over a gentle fire, then cast into moulds, cooled, and when the oil had drained off, remelted, moulded again and again until it was very white. Then, with a knife made for the purpose, it was cut into scales or flakes. Lemery says the ancients gave it the name, believing it to be the seed of the whale, which was found floating on the sea. But in (his) modern times this opinion had been rejected, and it was held to be a kind of sea froth driven by the waves to and fro. Quite recently (when he wrote) it had been learnt that it was drawn from the head of the whale.