Abstract
THE weather on Monday was so unfavourable that the observations of this interesting phenomenon were mostly unfortunate in England. In France some valuable observations seem to have been made. Our Paris Correspondent writes that the observations taken by M. Janssen at Meudon Observatory were wonderfully successful considering the state of the atmosphere. He was able to make use of spectrum analysis in order to determine the composition of Mercury's atmosphere. He was able to see Mercury before it had begun to make its first entrance on the disc. This observation is a confirmation of the phenomena observed in 1874 at Yokohama on the occasion of the Transit of Venus. Two photographs are excellent, and will lead to a determination of the diameter of the planet. At the Paris Observatory the transit was also seen.
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THE TRANSIT OF MERCURY . Nature 18, 46 (1878). https://doi.org/10.1038/018046a0
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DOI: https://doi.org/10.1038/018046a0