It is the aim of this bulletin to describe in some detail the scope and methods of university extension bureaus with particular reference to those which actively stimulate public discussion on current public questions. Chief attention will be given to the work they do in assisting public discussion leagues and clubs, and in carrying on package library service. The package library is the special device developed by the extension divisions for furnishing up-to-date facts and opinions on debatable questions of general interest. Topics covered in this bulletin include the following: (1) Extension bureaus of information; (2) Limited activities of bureaus; (3) University service and public opinion; (4) The package library service; (5) General information service; (6) Club study and library service; (7) Club study, public discussion, and library service by States; (8) Assistance in debating and other forms of public discussion; (9) Educational value of debating and public discussion; and (10) The scope of extension service. (Contains 12 footnotes.) [Best copy available has been provided.]