I shall furthermore show that the various shades of a tone proceed from various parts of such vessel. Yet, while tones are produced in special parts, the instrument of the voice being of a sympathetic nature, _all_ parts of the _viscera_ participate therein, by, in a manner, _leaning_ towards a vessel in which a tone is produced, thus assisting in giving it utterance. If a sound is produced in one of the vessels of the abdomen, those of the thorax, though not directly participating therein, give it aid and comfort by their passivity, thus throwing the entire strength of the voice-producing forces into this one spot. If a sound is produced in the thorax, the vessels of the abdomen aid it in a similar manner. This is more particularly the case when a sound of a superior order is to be produced, which is thus _reinforced_ by this aid. In matters of the voice, as in many others, truth is stranger than fiction. Dr. Rush has said: "Some day, when the real instrument of the voice will be discovered, it will be found to be of an order far different in its nature and construction from that which it has ever been supposed to be." The greatest mechanical wonder, however, is that the voice, and that which is apparently one and the same sound, should under different circumstances emanate from sources so entirely different in their construction as the vocal cords to the trachea and those to the œsophagus, the viscera of the kidneys, the bladder and the lungs, etc. This fact also accounts for the mystery which, like an impenetrable veil, has hung over the features of the voice. Who has ever thought of looking for the spirit of the voice to reveal itself from _beneath_ the tongue? Who has ever thought that the œsophagus was a breathing-tube of a similar functional order as the trachea? Who has thought that the viscera of the abdomen were playing as important a part in breathing as the lungs? Who has thought that the hemisphere of the abdomen was as directly amenable to the influence of the air as that of the thorax? Who has, in fine, thought that the viscera of the abdomen together with those of the thorax were primarily instrumental in producing the voice and vocal utterance? It may not be pleasant to know, and it may not quite conform with our æsthetic taste, that the "voice divine" should have its origin in such vessels as the kidneys and the bladder; but I have no quarrel with the Creator, and can but wonder, as I have never ceased to wonder from step to step in all these investigations, at the marvellous resources of nature. There is one great lesson conveyed through this, namely,--- that the body is _divine_ in its _every aspect_; parts which have been supposed to serve ends only of a comparatively low order participating in the highest spiritual functions.