VII. Musical Physiology; the Point of Departure; Intervals; Cadences

Should you ever have the opportunity of examining a collar-bone (perhaps managing to acquire some knowledge of the surrounding muscles, and especially studying the direction they take) then you will notice something very remarkable about this S-shaped collar-bone. The form of that part of the collar-bone which tends outwards will give you the feeling that it is receiving something, that it allows things from outside to approach it. In that part which goes out from the middle you will feel an out-streaming tendency. In the collar-bone (see diagram) you really have an out-streaming and an in-streaming. The outward stream passes through the back part of the arm, via the ulna, down into the back of the hand. The inward stream passes through the palm of the hand, up the radius and back again here [to the collar-bone]. Here two streams continually exist, the one flowing upwards this way, and the other outwards (see arrow). The one gives something out, the other is receptive. Following this, you arrive directly at a real understanding of the major ( Dur) and minor ( Moll) moods.