Discourse by Rev. Dr. Swami Bhajananada Saraswati on vahni-prākārcintā (imagining a circle of fire); dehamārjana (purification of the body); ātma-raksha (protection of the self); prānāyāma (contorl of the prana/breath); and bhūta-śuddhi part 1 (purification of the elements) given at Kali Mandir Ramakrishna Ashram on 2 June 2018. This is part of a series of class-talks on the theory and practice of Kali Puja, the ritualistic worship of the Divine Mother Kali.