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Show I ; Ksasrvcrd CiscrvcSory Sc2s CcnScrsnial I I j BOSTON. Long known as the . ' western hemisphere's "Patrolman of the Skies," the Harvard college observatory ob-servatory will note the 100th anni-! anni-! versary of its founding at a four-day celebration December 27-30. In connection con-nection with the event, two science conventions are scheduled here. First planetarium in the world to phutograph the stellar activities of the sky, the observatory was completed com-pleted in 1846. Since then it has be come the central clearing house for all astronomical information on this continent. Beginning in 1880, the observatory observa-tory has photographed huge sections of the sky each night. As a result it has a collection of phutograph plates numbering more than 500.000. which enables astronomers to check the stellar activities which have occurred oc-curred during any clear evening of the past 66 yearf |