The Bruce Telescope.

The new photographic telescope, the gift of Miss C. W. Bruce of New York, will soon be ready for use at the observatory. The mountings are in position, and only a few details are necessary for the completion of the work which has been going on for about two years.

The telescope is the largest of its kind in the world. Its peculiar feature is the possession of two independent objectives, a "doublet," forming a rectilinear combination, which does away with distortion, and thus makes possible accurate charting of a large portion of the heavens.

The lenses, which were made by Clark of Cambridge, are twenty-four inches in diameter, the focal length of the combination being seven feet three inches. A photographic plate fourteen by seventeen inches will be used.

The telescope will remain here for about two years, when it will be sent to the station at Peru.