Suka-Devi, a well-known miracle-monger of the second century B.C. says:
"Place the left foot upon the right thigh, and the right foot upon
the left thigh; straighten the neck and back; make the palms of
the hands rest upon the knees; shut the mouth; and expire forcibly
through both nostrils. Next, inspire and expire quickly until you
are fatigued. Then inspire through the right nostril, fill the
abdomen with the inspired air, suspend the breath, and fix the
sight on the tip of the nose. Then expire through the left nostril,
and next, inspiring through the left nostril, suspend the breath... "
and so on.
"When a Yogi, by practice, is enabled to maintain himself in one
of the above-mentioned postures for the period of three hours, and
to live upon a quantity of food proportional to the reduced condition
of circulation and respiration, without inconvenience, he proceeds
to the practice of Pranayama," writes Dr. Paul. "It is the fourth
stage or division of Yoga."
The Pranayama consists of three parts. The first excites the
secretion of sweat, the second is attended by convulsive movements of
the features, the third gives to the Yogi a feeling of extraordinary
lightness in his body.
After this, the Yogi practises Pratyahara, a kind of voluntary
trance, which is recognizable by the full suspension of all the
senses. After this stage the Yogis study the process of Dharana;
this not only stops the activity of physical senses, but also
causes the mental capacities to be plunged into a deep torpor.
This stage brings abundant suffering; it requires a good deal of
firmness and resolution on the part of a Yogi, but it leads him
to Dhayana, a state of perfect, indescribable bliss. According
to their own description, in this state they swim in the ocean
of eternal light, in Akasha, or Ananta Jyoti, which they call
the "Soul of the Universe." Reaching the stage of Dhyana, the
Yogi becomes a seer. The Dhyana of the Yogis is the same thing
as Turiya Avastha of the Vedantins, in the number of whom are
the Raj-Yogis.
"Samadhi is the last stage of self-trance," says Dr. Paul. "In
this state the Yogis, like the bat, the hedge-hog, the marmot,
the hamster and the dormouse, acquire the power of supporting the
abstraction of atmospheric air, and the privation of food and drink.
Of Samadhi or human hibernation there have been three cases within
the last twenty-five years. The first case occurred in Calcutta,
the second in Jesselmere, and the third in the Punjab. I was an
eyewitness of the first case. The Jesselmere, the Punjab, and
the Calcutta Yogis assumed a death-like condition by swallowing
the tongue.
