returns to the physical world with a body for the fulfillment of desires from its prior incarnation. How it moves from one world to another is a mystery. Yogis can perceive the mystery and tell the past sanskar of jiva. On death Nigamananda said that one should remember that death is coming. Before working on good or evil deeds one should also remember that death is not far off. Contemplating death drives away the desire for sensual pleasure and evil thoughts and stops acts of injustice. Attachment to wealth and relations will then diminish. Earthly matters remain even after departure from this world. Only spiritual wealth remains as an asset to the individual. Those who have puffed with pride on account of their accomplishments will submit to the God of death meekly when that hour comes. Drunk with pride, some persons ill-treat their brethren. They will be left in the deserted crematory ground with the beasts and birds joyously waiting to feast upon their flesh. Thinking of this will drive evil thoughts from the mind. Yoga Nigamananda wrote a great deal on Yoga. His theories and techniques can be found in his book "Yogi Guru". Samples: Hatha yoga and Laya yoga Hatha yoga can be carried out when the body is made fit for the purpose. The body should be cleansed first of impurities through sat sadhna, the six elementary practices of yoga. Hatha yoga is completely different from laya yoga. Hatha yoga can make the body strong, enabling it to survive for four hundred years or more, whereas laya yoga helps the aspirant to attain union with the supreme. If the body is not kept purified both externally and internally with hatha yoga, attempting laya yoga would yield no result. Dharana and dhyan Nigamananda taught that the breathing system is closely connected with the intricate workings of the mind. Therefore, practice of pranayama leads to calmer breathing and thereby maintains tranquility of mind. Mind is subjected to forces of disturbed thoughts owing to irregular breathing. He said "I had applied myself to the higher practices of yoga, thereafter, i.e. dharana and dhyan (meditation)". The sadhaka is likely to peril his life if he does not take assistance of another during these advanced practices. During Dhāraṇā, the sadhaka experiences his own progress and when the estimated height in sadhana is achieved, he enters into successive steps of progress. While being