Rev. S. Parkes Cadman, D.D., of New York, will deliver in Phillips Brooks House at 6.45 tonight the sixth of a series of addresses on the "Beginnings of Christian Faith." This series of addresses, dealing with the fundamental principles of Christianity, was inaugurated by the Harvard Christian Association at the request of men who were interested in the talks given last March by Mr. John R. Mott; the five previous addresses have been given by Dr. McKenzle, Hon. S. B. Capen, Mr. Charles F. Shaw, Rev. Edward M. Noyes, and Dr. W. T. Grenfell. The meeting tonight will be open only to members of the University.