The Yogi teachings go further than does Western science, in one
important feature of the Nervous System. We allude to what Western
science terms the "Solar Plexus," and which it considers as merely one
of a series of certain matted nets of sympathetic nerves with their
ganglia found in various parts of the body. Yogi science teaches that
this Solar Plexus is really a most important part of the Nervous
System, and that it is a form of brain, playing one of the principal
parts in the human economy. Western science seems to be moving
gradually towards a recognition of this fact which has been known to
the Yogis of the East for centuries, and some recent Western writers
have termed the Solar Plexus the "Abdominal Brain." The Solar Plexus
is situated in the Epigastric region, just back of the "pit of the
stomach" on either side of the spinal column. It is composed of white
and gray brain matter, similar to that composing the other brains of
man. It has control of the main internal organs of man, and plays a
much more important part than is generally recognized. We will not go
into the Yogi theory regarding the Solar Plexus, further than to say
that they know it as the great central store-house of Prana. Men have
been known to be instantly killed by a severe blow over the Solar
Plexus, and prize fighters recognize its vulnerability and frequently
temporarily paralyze their opponents by a blow over this region.

The name "Solar" is well bestowed on this "brain," as it radiates
strength and energy to all parts of the body, even the upper brains
depending largely upon it as a storehouse of Prana. Sooner or later
Western science will fully recognize the real function of the Solar
Plexus, and will accord to it a far more important place then it now
occupies in their text-books and teachings.