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Chicago University Observatory.

President Harper of the Chicago University has concluded the purchase of the forty inch lenses made for the University of California, and no time is being lost to complete the erection of the University observatory which is to be the largest in the world. The lenses are in the hands of Alvin G. Clarck of Cambridge who has promised to have them ready in eighteen months. The work of planning the details of the buildings begins at once, and estimates for the mounting of the telescope and equipment of the observatory have been ordered.

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