This paper shows in detail how the formal semiotic of M. J. Cresswell [6] may be extended to provide an account of indirect question clauses in English. The resulting account is compared at various points with the theory recently propounded by Karttunen [12] and is argued to have two major advantages over the latter in that (i) it accommodates the manifest teleological relativity of ‘who’-clauses, and (ii) it avoids the need for categorial segregation of sentence-taking verbs from wh-clause-taking verbs while (...) offering a uniform explanation of various apparent semantic differences between them. (shrink)