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1 ‘ Aetites or the Eagle-stone,’ March 1947, pp. 16-22.
2 Birch, T., Life of The Honourable Robert Boyle, 1744, p. 47.Google Scholar
3 See Aristotle, De Resp., Cap. VII, 473 b ; or Professor B. Farrington's Pelican Book on Greek Science, pp. 51, 52.