The Harvard Christian Association will meet with the city association tomorrow afternoon at 4 o'clock, to observe the Day of Prayer for Colleges. The speakers will be H. H. Morse, Harvard '00, J. A. Patch, Technology '00, and Mr. D. Chauncey Brewer of Boston. Music will be provided by a male quartet. All Harvard men are invited to attend. The Cambridge Christian Association building is on Massachusetts avenue, opposite the City Hall.