FURTHER RESEARCH NEEDED 17 library users? If the hypothesis is correct that once people are retained as library users beyond this period they continue to use the public library throughout their adult life, it becomes all the more important to do whatever can be done about the school-leaving problem. A first step would be to collect and analyze facts on the reasons some young people continue to use the public library even when they are not obliged to and others do not. On the basis of such information constructive programs to improve the situation might be devised. An implicit assumption underlying this whole question is also worthy of investigation. /The fault may lie, not in the schools or the libraries, but in reading itself. It may well be that the reason so many fail to read books after they leave school is that such reading does not serve their individual pur- poses as well as do other activities. A study which would re- veal more clearly the motives which determine the use of other agencies and media of communication, and would define more precisely the kind of need which other sources satisfy, might clarify the area in which the book is most effective and identify the library’s natural clientele. If it can be shown that those who do not use books have different needs from those who do, the library could direct its attention to those who do need its services rather than toward winning additional pa- trons who might be more adequately served elsewhere. RESEARCH ON LIBRARY SERVICES Reference Use.—Also, there are a few studies which deal with the kinds of services which the public library provides. As is evident from this review, the reference services of the public library have been studied less than have the circulation services. The records of reference service are not kept so faithfully, since information is not lent to the client, as are books. Many librarians believe that the reference and infor- mation services are their major services to the public, that