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    • Halley's Chart of Magnetic Declinations - Nature

      Nature· 15 hours ago

      WITHIN the last few days I have come into possession of another early map showing Halley's lines. The date of this map is 1725, and it was published by John Senex, F.R.S. It is entitled “A Map ...

    • Flat-fishes - Nature

      Nature· 4 days ago

      On the American coast of the Pacific, there is a flat-fish, Paralichthys californicus, Ayres, which is said by Messrs. Here, then, is the same sort of variation ...

    • Research in Terrestrial Magnetism 1 - Nature

      Nature· 4 days ago

      There were 284 stations in Australasia, and 247 in South America, the latter distributed in eleven countries, 63 stations being in Peru and 52 in Brazil; 46 stations were occupied in islands ...