Obs. A cover for an alembic or retort; a retort with such a cover.

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1662.  R. Mathew, Unl. Alch., § 108. 176. Put on a blind head, and let it stand in ashes, or Balneo Maria.

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1667.  Boyle, Orig. Formes & Qual. A Glasse Body, with a blind head luted to it.

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1736.  Bailey, Houshold Dict., 129. Clap on a blind-head, lute it well.

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1743.  Lond. & Country Brewer, IV. 305. Hops that have been … stewed on Purpose in a blind Head.

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