1917. In The Tree of Life: An Expose of Physical Regenesis on the Threefold Plane of Bodily, Chemical and Spiritual Operation Carey explains the wonders and possibilities of the human body in Part One. In Part Two he talks about the Bridge of Life, which enables man to bridge the three-month gap, or space between the point of conception and birth is the one real problem that confronts Soul on the material plane of expression. Finally, Part Three is about the Optic Thalmus and how to search for the oil that feeds the lamp of the All-Seeing Eye.