Scientific discourse is rooted in the close interplay between human cognition and communication. Accordingly, the volume focuses on central aspects of this relationship and the variety of the approaches which are intended to capture these aspects. The book is divided into two related parts. The papers of the first part deal with textual issues, whereas those of the second raise epistemological problems. As a result, the volume is a rich and many-sided contribution to our understanding of how scientific knowledge is constructed and manifested in discourse.