Here is the clearest exposition since Blavatsky of the Rootraces and their cycles, from the birth of the human soul in ancient Lemuria through Atlantis to our modern Fifth Rootrace. There are many useful explanatory tables diagrams and timelines that demonstrate astronomical & astrological bases of the 'rounds', 'yugas' and other cycles, including scientific correspondences. There is also an exhaustive esoteric interpretation of Genesis from the racial and cyclic angle, using the Ten Patriarchs as a key for the duration and order of the races; there are several breakthroughs here, never published before. (Several more volumes are planned, investigating other 'keys'.).