Ancient Science of Breathing[UBSPD]

Preface
SVARODAYA VIJÑĀNA
(Divine Secrets of Breathing)
In the library of my father, I found an old Sanskrit book Śiva Svarodaya translated into Hindi by Pandit Ram Dhan Sharma Gopal Puri, Published by Gajanand Press, Bombay in Vikram Samvat 1954 (1897 AD). Here, the Divine Secrets of breathing are revealed by Lord Śiva in his dialogue with his Divine consort Parvati, for the benefit of good people and caution from its divulgence to unworthy persons.
I also had the opportunity to consult another manuscript on svara (breathing) Vijñāna, which is in Mixed Urdu and Persian, and is one hundred and fifty years old, Svara, Vijñāna is called Pass Infas in Persian.