Since Director Aubrey Williams of the National Youth Administration will be unable to address the Phillips Brooks House Social Service Conference tomorrow, Arthur T. Lyman '16, Massachusetts Commissioner of Correction, is to be the principal speaker.

With representatives from Boston University, M. I. T., Yale, Radcliffe, Smith, Brown, Vassar, Simmons, Barnard, and Mt. Holyoke, the conference will take on the air of a convention.

Harry Newman, Jr. '42, president of P. B. H., said that the intercollegiate gathering would have two objects: first, to exchange information on methods and types of community service work in colleges, and second, to encourage the spread of the P. B. H. social service committee idea throughout the universities of the country.

After registration at 5 o'clock this afternoon, the delegates will banquet at Eliot House, and will take a trip through Boston settlement houses.