The purpose of this paper is to examine how instruction in scientific writi
ng in a university oceanography course communicated epistemological positio
ns of this discipline. Drawing from sociological and anthropological studie
s of scientific communities, this study uses an ethnographic perspective to
explore how teachers and students came to define particular views of disci
plinary knowledge through the everyday practices associated with teaching a
nd learning oceanography. Writing in a scientific genre was supported by in
teractive CD-ROM which allowed students to access data representations from
geological databases. In our analysis of the spoken and written discourse
of the members of this course, we identified epistemological issues such as
uses of evidence, role of expertise, relevance of point of view, and limit
s to the authority of disciplinary inquiry. Implications for college scienc
e teaching are drawn. (C) 2000 John Wiley & Sons, Inc.