Professor Spalding's Lecture.

Professor W. R. Spalding will give the fifth of his series of weekly lectures in reference to the Boston Symphony concerts, at 4.30 o'clock this afternoon, in the Lecture Room of the Fogg Museum. He will give today a brief comment on the sonata form. Haydn's Symphony in E flat will be played on the Aeolian Orchestrelle to illustrate the talk.

The lecture will be open to the public.