A review of traditional and transformational studies on the phenomenon of sentential complementation (noun clauses) reveals many areas of agreement. Although some adherents of generative grammar may have occasionally obscured this aspect because of the offensive nature of their criticism of other modes of analysis, it is seen that, in several cases, more recent research is merely an extension of notions already existent in the traditional framework. Some recent additions to knowledge of complement structures in the domain of semantics and logic are also surveyed. (Author)