34. That which has a certain dimension, and is placed as a piece of flesh inside the breast, is called an inferior heart, and forms a part of the body.
35. The other is of the nature of consciousness, and is called the superior mind; because it is both in the inside and outside of the body, and yet it is situated in no part of it.
36. That is the superior part, wherein all this world is situated, which is the great reflector of all things, and receptacle of all goods (so says the Sruti: “the earth and sky and all things reside in it”).
37. The consciousness of all living creatures, is also called their heart; though it is no part of the animal body, nor is a dull inert substance as a pebble or stone.
38. Now this conscious or sensitive heart, being purified of its internal desires, and joined perforce with the chitta or thinking mind, the vibrations of vital breath are put to a stand.
39. These as well as many other methods, which have been adopted by others, and dictated by the mouths of many sages, equally serve to suppress the breathing (both for the fixity of attention and prolongation of life).
40. These methods which are adapted to the process of yoga meditation (or concentration of the mind); are to be slowly adopted by continued practice, for the redemption of the good from this world; or else their hasty adoption of it may prove detrimental to life.
41. As it is long practice, that perfects a man to the rank of a cenobite and anchorite, so the gradual suppression of respiration, is attended with equal success; as repression of desires, is accompanied by many happy results.
42. It is by continued practice, that the breath is compressed within the confines of twelve inches about the cavities of the brows, nostrils and palate, as the cataract is confined within the limit of the pit.
43. It is repeated practice also, that the tip of the tongue should be brought to a contact with the gullet of the throat, through which the breath doth pass both in and out.