This book is a collection of linguistic and philosophical papers dealing with the semantic problems of determiners. The language under investigation is mostly English, although a few papers deal with French and German, and, to a lesser extent, with Dutch, Polish, Russian and Hebrew. The majority of the contributions focus on the semantics of the definite and indefinite articles, leading into discussions of anaphoricness, specificness, opacity and transparency, referentiality and attributiveness and genericness. The relation of the determiners to other parts of grammar, in particular relativisation and predication, is also investigated.