Thursday, March 14.

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

Boston Symphony Orchestra Concert. Soloist: Mr. Fritz Kreisler. Sanders Theatre, 7.45 p. m. Programme: Beethovern, Overture, "Fidelio"; Mendelssohn, Concerto for violin; Berlios, Fantastic Symphony.

**Lectures on Electrical Conduction in Gases. IV. Theory. Dr. H. H. Brown. Jefferson Physical Laboratory, Room 25, 8 p. m.,