Several years ago, one of us presented a model of the market for physicians' services (Feldstein, 1970). In a subsequent comment, Brown and Lapan ( 1972) raised several questions about the model and the conclusions. Unfortunately, this comment and the reply by Feldstein ( 1972) left a number of issues unsettled. Some of the disagreement was based on misunderstanding and on drawing infer­ ences from different theoretical models. After the publication of the comment and reply, we continued to pursue the basis of our disagreements. The cur­ rent note is an attempt to clarify the issues that were raised but not resolved in the previous ex­ change.