Contents: Method in the philosophy of science and epistemology / Dudley Shapere -- 'Twixt method and madness / Thomas Nickles -- Historical realism and contextual objectivity / Marjorie Grene -- Research problems and the understanding of science / William Berkson -- Twenty years after / Joseph Agassi -- The semantic approach to scientific theories / Bas C. van Frassen -- The garden in the machine / Sandra Harding -- The cognitive study of science / Ronald N. Giere -- A cognitive-historical approach to meaning in scientific theories / Nancy J. Nersessian -- Naturalizing observation / Harold I. Brown -- Realist methodology in genetics / Richard M. Burian -- Parsimony and the units of selection / Elliott Sober.