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Show The Oldest Obterratorr. The observatory at Pekln is the oldest In the world, having been founded Iu 1279 by Kublal Khan, the first emperor of the Mo-rul dynasty. There are still In It three of the flrstlnstrumentsof observation. These w ere Used for the observation of Hallry's comet in 175$, and may also bo used when, twenty-tw o years hence, tills comet again ap- riars. The oldest oiervatory In urope is that founded by King Frederick III of Denmark ou the Island of Kyen, in thtf Bjund, and where tho famous Danish as-tronomer, as-tronomer, TjchoBrahe, carried out his celebrated -observations, among Diners that of tho "bright" Btar in CasIoela. The Paris observatory was established In 1C71, and that of (Jreenwlch three years later. Z&mtrtal Star. |