The pneumatics of Hero of Alexandria — 75. A Steam-Boiler from which either a hot Blast may be driven into the Fire, a Blackbird made to sing, or a Triton to b

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The pneumatics of Hero of Alexandria 75. A Steam-Boiler from which either a hot Blast may be driven into the Fire, a Blackbird made to sing, or a Triton to b · ch 84/90

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