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HAS the following appeared anywhere in this connection as yet, or not? If not, please allow it to appear in NATURE with this qualification only, that the italics are mine.
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CURRAN, W. The Speaking Tube Anticipated?. Nature 24, 80 (1881). https://doi.org/10.1038/024080d0
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DOI: https://doi.org/10.1038/024080d0
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