In this volume, the fourth of my Tibetan Series, I have placed on record, in a manner intended to appeal equally to the learned and to the unlearned, to the philosopher and to the scientist, some of the most recondite teachings of Oriental Sages. In doing so, I have had the right guidance of an original text, heretofore unknown to Europe the authorship of which is attributed to Tibet's Precious Guru Padma-Sambhava, the illustrious master of the Tantric...