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15th May 1937
'The End of the Season'
'Naval Reform'
A reference to the weather predictions of P
Calx carbonata tripe 15th May 1937Specimen of calcium carbonate crystal, here termed 'crystallized carbonate of lime', showing optical effects. Plate 35 from British mineralogy: or coloured figures intended to elucidate the mineralogy of Great Britain, by James Sowerby, volume 1 (London, R. Taylor & Co., 1804). The accompanying text states that 'This fine yellowish crystal shows at the apex three polished faces the double refraction is seen, when held in certain directions, by the
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