THE SEEMING NEUTRAL FEELING ZONE.--It is probable that there is so little feeling connected with many of the humdrum and habitual experiences of our everyday lives, that we are but slightly, if at all, aware of a feeling state in connection with them. Yet a state of consciousness with absolutely no feeling side to it is as unthinkable as the obverse side of a coin without the reverse. Some sort of feeling tone or mood is always present. The width of the affective neutral zone--that is, of a feeling state so little marked as not to be discriminated as either pleasure or pain, desire or aversion--varies with different persons, and with the same person at different times. It is conditioned largely by the amount of attention given in the direction of feeling, and also on the fineness of the power of feeling discrimination. It is safe to say that the zero range is usually so small as to be negligible. 2. MOOD AND DISPOSITION The sum total of all the feeling accompanying the various sensory and thought processes at any given time results in what we may call our _feeling tone_, _or mood._ HOW MOOD IS PRODUCED.--During most of our waking hours, and, indeed, during our sleeping hours as well, a multitude of sensory currents are pouring into the cortical centers. At the present moment we can hear the rumble of a wagon, the chirp of a cricket, the chatter of distant voices, and a hundred other sounds besides. At the same time the eye is appealed to by an infinite variety of stimuli in light, color, and objects; the skin responds to many contacts and temperatures; and every other type of end-organ of the body is acting as a "sender" to telegraph a message in to the brain. Add to these the powerful currents which are constantly being sent to the cortex from the visceral organs--those of respiration, of circulation, of digestion and assimilation. And then finally add the central processes which accompany the flight of images through our minds--our meditations, memories, and imaginations, our cogitations and volitions. Thus we see what a complex our feelings must be, and how impossible to have any moment in which some feeling is not present as a part of our mental stream. It is this complex, now made up chiefly on the basis of the sensory currents coming in from the end-organs or the visceral organs, and now on the basis of those in the cortex connected with our thought life, which constitutes the entire feeling tone, or _mood_.