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The photographs taken at the Observatory during the recent showers of Leonids have now been thoroughly examined and classified. About a hundred photographs were taken, and, considering the size of the shower, which numbered only about four hundred and fifty Leonids in all, the number of successful photographs was remarkably large. On each of two plates there were three trails and a single distinct trail was found on each of twelve others. It will now be possible to locate the radiant from which the Leonids proceed, by tracing back the trails photographed on the plates and determining the point at which they intersect.
The Observatory also succeeded in photographing the same Leonid with two cameras a mile apart. By the parallex method, using this mile as a base line, it will be possible to obtain the height of the radiant.
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