History of the Vacuum Flask | Nature
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WHILE fully accepting all that Mr. Gabb writes in NATURE of June 1 about matters of fact within his knowledge, I am still of opinion that Lennox made the first vacuum test tubes and flasks
by methods of his own. Those I saw on his bench were transparent (unsilvered), and, having watched both him and Muller at work, I consider that he was quite as capable of doing it as Muller.
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