EPIPHENOMENON means a secondary appearance or by product. The term is used to express a certain view of the rela tion of mind to body, or consciousness to matter. According to Huxley, Hodgson and Maudsley consciousness is just something incidental to the organism in which it occurs, and has no in fluence upon it—"a mere foam, aura, or melody arising from the brain, but without reaction upon it" (S. H. Hodgson, Time and Space). See BODY AND MIND; H. Maudsley, Physiology and Path ology of Mind (1867) ; S. H. Hodgson, Time and Space (1865), The Theory of Practice (187o).