I Bon Zhig Khyung Nag-His Life and Revelations 28 Conception and Birth 29 Education and Visions 29 the Meeting with his root-master, Hig po kun dga' 32 Revelation of the oral transmission 32 II the Lineage of the rig pa gcer mthong 33 1. 'Khrul zhig ldom bu 33 2. Dam pa g.yu zhig 35 3. Zig po kun dga' 35 4.Ldong Sgom zhig po 36 III the General structure of the cycle 37 1. the root revelation 37 2. secondary texts 37 IV the main contents of the oral transmission 38 A. Lineage 38 B. Preliminaries 38 C. the different systems of confrontations 39 1. objects, mind and their indifferentiation 39 2. emptiness, awareness and the three bodies of enlightenment 40 D. main mediational practices 41 1. the natural state or basis (GZHI) 41 2. awareness (rig pa) 41 3. sky gazing practice 43 4. clear-light ('od gsal) 44 E. secondary practices 45 F. bardo trachings and the practice of trandfer ('pho ba) 46 1. confrontations with sounds,lights and rays 46 2. confrontation to the nature of the mind 47 3. practices at the time of death 48 4. special practice of the transfer 49 notes 50 references 56