Abstract

MEDIEVAL LOGICKATHERINE H. TACHAU, Vision and certitude in the age of Ockham: Optics, epistemology and the foundations of semantics 1250-1345. Leiden, New York, Copenhagen and Cologne: E. J. Brill, 1988, xxii + 428 pp. DM 156.L. M. DE RIJK, Through language to reality. Northampton: Variorum Reprints, 1989. xii + 337 pp.THE 17TH CENTURYS. GAUKROGER, Cartesian logic: an essay on Descartes's conception of inference. Oxford: Clarendon Press, 1989. xi + 145 pp. £17.50.KLAUS ERICH KAEHLER, Leibniz’ Position der Rationalität. Die Logik im metaphysischen Wissen der ‘natürlichen Vernunft’. Freiburg, München: Karl Alber, 1989.528 pp. 98 DM.MISCELLANEOUSJ. GASSER, Essai sur la nature et les critGres de la preuve. Cousset, Switzerland: Delval, 1989. xivf 144 pp. No price stated.A. W. MOORE, The infinite. London and New York: Routledge, 1990.268 pp. £30.00.JON BARWISE, The situation in logic. Stanford, California: Center for the Study of Language and Information, 1989. xvi + 327 pp. £22.95/$40.25 ; £11.951/$17.25.