hand, neither very slowly nor very rapidly, and snapping the fingers once is called a māṭrā. Drawing the air through the left nostril for about sixteen māṭrās and having retained it (within) for about sixty-four māṭrās, one should expel it again through the right nostril for about thirty-two māṭrās. Again fill the right nostril as before (and continue the rest). Practise cessation of breath four times daily (viz.,) at sunrise, noon, sunset and midnight, till eighty (times are reached). By a continual practice for about three months, the purification of the nādis takes place. When the Midis have become purified, certain external signs appear on the body of the yogin. I shall proceed to describe them. (They are) lightness of the body, brilliancy of complexion, increase of the gastric fire, leanness of the body, and along with these, absence of restlessness in the body. The proficient in yoga should abandon the food detrimental to the practice of yoga. He should give up salt, mustard, things sour, hot, pungent, or bitter, vegetables, asafœtida, etc., worship of fire, women, walking, bathing at sunrise, emaciation of the body by fasts, etc. During the early stages of practice, food of milk and ghee is ordained; also food consisting of wheat, green pulse and red rice are said to favour the progress. Then he will be able to retain his breath as long as he likes. By thus retaining the breath as long as he likes, kevala kumbhaka (cessation of breath without inspiration and expiration) is attained. When kevala kumbhaka is attained by one, and thus expiration and inspiration are dispensed with, there is nothing unattainable in the three worlds to him. In the commencement (of his practice), sweat is given out; he should wipe it off. Even after that, owing to the retaining of the breath, the person practising it gets phlegm. Then by an increased practice of ḍhāraṇā, sweat arises. As a frog moves by leaps, so the yogin sitting in the Paḍma posture moves on the earth. With a (further) increased practice, he is able to rise from the ground. He, while seated in Paḍma posture, levitates. There arises to him the power to perform extraordinary feats. He does (or should) not disclose to others his feats of great powers (in the path). Any pain small or