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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General Registration After the April Recess.