This book sets the esoteric tradition beside archaeology, geology and genetics, and asks how far the two accounts agree.
The esoteric tradition holds that two peoples who were not human lived on this planet before us and are among our ancestors: the Lemurians of the Third Race and the Atlanteans of the Fourth.
Genetics has now found seven peoples of extinct archaic humans inside the DNA of the living. Two of them have bones and names, the Neanderthals and the Denisovans. Five have no remains at all and are known only from the stretches of DNA they left in us.
I propose that the Denisovans are the Lemurians. Their bones lie inside the Lemuria that Blavatsky drew, and their living inheritance rises to five percent in New Guinea and Aboriginal Australia. Blavatsky named the Aboriginal Australians as the purest living descendants of the Lemurians (Blavatsky 1888).
Atlantis is less settled, and the book turns to it in the second half. The esoteric sources place it in the Atlantic and the Mediterranean. The book compares these accounts with the drying and refilling of the Mediterranean between six million and five and a third million years ago.
The book then sorts the seven extinct archaic human peoples against what the esoteric sources say an Atlantean was, using place, quantity, date and body. Three of the four can be checked against genetic data. Three peoples survive the sorting: the Neanderthals, and two of the five known only from DNA, one found on the West African Atlantic coast and one present in every human being alive. None of the three is confirmed by any source, and the sorting is set out with its own limits stated. One of them is that genetic data leaves open whether a given people lived on this planet, or came from another planet and hybridized with us without living here.
It ends with what each Race is said to have brought, with the persecution that thinned the psychic capacity out of our species, and with two ideas about what the alien hybridization now under way may be restoring to us.