Raja-Yoga

THE PSYCHIC PRANA. 49
the brain) and the Svddhtithdna (next above the MMddhdra).
Next we will take one fact from physics. We
all hear of electricity, and various other forces con
nected with it. What electricity is no one knows, but,
so far as it is known,
it is a sort of motion.
There are various other motions in the universe;
what is the difference between them and electricity ?
Suppose this table moves, that the molecules which
compose this table are moving in different directions;
if
they are all made to move in the same direction it
will be electricity. Electric motion is when the mole
cules all move in the same direction. If all the air
molecules in a room are made to move in the same
direction it will make a gigantic battery of electricity
of the room. Another point from physiology we must
remember, that the centre which regulates the respira
tory system, the breathing system, has a sort of con
trolling action over the system of nerve currents, and
the controlling centre of the respiratory system is
opposite the thorax, in the spinal column. This centre
regulates the respiratory organs, and also exercises
some control over the secondary centres.
Now we shall see why breathing is practised. In the
first place, from rhythmical breathing will come a
tendency of all the molecules in the body to have the
same direction. When mind changes into will, the
currents change into a motion similar to electricity,
because the nerves have been proved to show polarity
under action of electric currents. This shows that
When the will evolves into the nerve currents it is
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