That we have sensations in parts of the body suffering, or approaching to, disorganization, does not require illustration. The disorganizations of which we speak proceed sometimes from external, sometimes from internal, causes. Lacerations, cuts, bruises, burnings, poisonings, are of the former kind; inflammation, and other diseases in the parts, are the latter. These sensations are specifically different from those classed under the several heads of sense. The feelings themselves, if attended to, are evidence of this. In the next place, they have neither organ, nor object, in the sense in which those latter feelings have them. We do not talk of an organ of burning; an organ of pain; nor do we talk of an object of any of them; we do not say the object of a cut, the object of an ache, the object of a sore. Most of those sensations are of the painful kind; though some are otherwise. Some slight, or locally minute inflammations, produce a sensation called itching, which is far from disagreeable, as appears from the desire to scratch, which excites it.[13] [Editor's footnote 13: The author, in this passage, uses the word itching out of its ordinary sense; making it denote the pleasant sensation accompanying the relief by scratching, instead of the slightly painful, and sometimes highly irritating, sensation which the scratching relieves.--_Ed._] {38} The scratching, which excites the pleasure of itching, is a species of friction, and friction, in most parts of the body, excites a sensation very different from the mere sense of touching or the simple feeling of the object. The tickling of the feather in the nose, for example, is very different from the mere feeling of the feather in touch. In some parts of the body the most intense sensations are produced by friction. There is difficulty in classing those sensations. They are not the same with those of any of the five senses: and they are not the same with those which rise from any tendency to disorganization in the parts of the body to which they are referred. Great accuracy, however, in the classification of the sensations, is not essential to that acquaintance with them, which is requisite for the subsequent parts of this inquiry. It will suffice for our purpose, if the reader so far attend to them, as to be secure from the danger of overlooking or mistaking them, where a distinct consideration of them is necessary for developing any of the complicated phenomena in which they are concerned.[14] [Bain's footnote 14: _Organic Sensibilities_.--The author did well to signalize these sensibilities, so powerful in their influence on human life. They are not confined to the side of pain. The same organs whose disorganization is connected with pain, are, in their healthy and vigorous working, more or less connected with pleasure. This is true not merely of the digestive functions, but of the respiration, the circulation, and others.