Giovanni Battista Porta, 1598: "I have devised a way to preserve words, that have been pronounced, inside lead pipes, in such a manner that they burst forth from them when one removes the cover."
Src: Giovanni Battista della Porta, Baptistae Portae Neapolitani Magiae naturalis libri viginti (Batavorum: Apud Petrum Leffen, 1651), book 16, chapter 12.

Quotes found in: Charles Grivel: "The Phonograph's Horned Mouth", in: KAHN, Douglas, WHITEHEAD, Gregory (editors): Wireless Imagination, p.43

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