Word: dement
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Dates: during 1930-1939
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...spectacular nature of the larger comets and is not so moved by the discovery of invisible ones to which the field has of late been reduced From the scientific point of view the recording of comets is important so that general laws can be made for a hitherto mysterious dement in the sky. It was once figured that people devoting full time to the search for comets spent on the average 400 hours of actual observation between each discovery...