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University Calendar.

*Open to the public. **Open to the University.

Thursday, March 21.

*Vesper Service. Appleton Chapel, 5 p. m.

**Harvard Mining Club. The Future of the Mining Industry. (Special attention will be given to methods of concentration.) Professor Shaler. Rotch Building, 8 p. m.

**Lectures on Electrical Conduction in Gases. VI. The Velocity of Ions in the Canal and Cathode Rays. Dr. H. H. Brown. Jefferson Physical Laboratory, Room 25, 8 p. m.

+Educational Conference. The Cambridge Manual Training School. Principal Charles H. Morse. Sever 17, 8 p. m.

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