It must be confessed, however, that the content of meaning, when it is not in the focus of attention, often becomes very elusive when we try to clearly revive it retrospectively and differentiate the particular states of consciousness present at any given moment. It is probably because of this elusiveness, as of something that seems to evade analysis, that it was so long overlooked as an object of psychological study. Yet if meaning is not something more than an abstract term, and is really a component of a moment’s consciousness, we ought to be able to analyze it in any given instance provided our methods of investigation are adequate. The difficulty, I think, largely arises from the fact that the minute we direct attention to such elements of the content of consciousness of any given moment as are not in the focus of attention they at once become shifted into the focus and the composition of the content also becomes altered. Consequently we are never _immediately_ vividly or fully aware of the whole content. The only method of learning what is the whole content at any given moment is by _retrospection_—the recovery of it as memory. Further, special technical methods are required. Then, too, image and meaning are constantly shifting their relative positions, at one time the one being in the focus of attention, the other in the fringe, and _vice versa_. When speaking colloquially of the content of consciousness we have in mind those ideas or components of ideas—elements of thought—which are in the focus of attention, and therefore that of which we are more or less vividly aware. If you were asked to state what was in your mind at a given moment it is the vivid elements, upon which your attention was focused, that you would describe. But, as everyone knows, these do not constitute the whole field of consciousness at any given moment. Besides these there is in the background of the mind, outside the focus, _a conscious margin or fringe_ of varying extent (_consisting of sensations, perceptions, and even thoughts_) _of which you are only dimly aware_. It is a sort of twilight zone in which the contents are so slightly illuminated by awareness as to be scarcely recognizable. The contents of this zone are readily forgotten owing to their having been outside the focus of attention; but much can be recalled if an effort to do so (retrospection) is made immediately after any given moment’s experience. Much can only be recalled by the use of special technical methods of investigation. I believe that the more thoroughly this wonderful region is explored the richer it will be found to be in conscious elements.