David R. Porter, executive secretary of the international committee of the Y. M. C. A., will give the second of the series of Sunday morning talks before a meeting of the Christian Association in Phillips Brooks House tomorrow morning at 9.45. The subject of this talk will be "The North American Christian Students Mobilizing for Democracy." His address will be given in connection with a conference of student Christian Association leaders which will be held in Phillips Brooks House today and tomorrow.

At the recent quadrennial conference of the Student Volunteer Movement held at Northfield during the Christmas recess, the policy was adopted "that New England college Christian Association leaders should challenge 200,000 students to study, understand and apply on campus, in the army and in the life of the nation and the world, Christian principles of world democracy."

All the New England delegates who attended this conference, numbering 40, will meet in Phillips Brooks House this evening at 7 o'clock. The conference leaders will be David R. Porter, Harrison S. Elliott and Cleland McAffee.