Abstract
I AM informed by the director of the Office National Météorologique de France that, with the approval of Sir Napier Shaw, president of the International Commission for the Study of Clouds, the dates for taking the photographs of clouds have been postponed by one week. Photographs will be taken at the three specified hours from September 24 to October 1 inclusive. Volunteers are much needed to help in the work, and I shall be glad to send full instructions to those who will send me their names.
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CAVE, C. Proposed International Survey of the Sky. Nature 112, 363 (1923). https://doi.org/10.1038/112363d0
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DOI: https://doi.org/10.1038/112363d0