CONSCIOUSNESS. A USER'S GUIDE * Adam Zeman * 2003. London: Yale University Press * Price  18.95. * ISBN 0-300-09280-6 * WIDER THAN THE SKY. THE PHENOMENAL GIFT OF CONSCIOUSNESS * Gerald M. Edelman * 2004. London: Allen Lane * Price  15.99. * ISBN 0-713-997-338 * THE QUEST FOR CONSCIOUSNESS. A NEUROBIOLOGICAL APPROACH * Christof Koch * 2004. Englewood: Roberts and Company and Bloxham: Scion Publishing * Price  29.99. * ISBN 0-974-707-708