A lost classic of modern perennialism, Hamlet's Mill is a significant but unrecognized contribution to the scientific understanding of ancient religions. Proceeding from the idea that mythology represents a pre-scientific technical language of celestial phenomena, the authors perform a comparative analysis of texts and images from Scandinavia to India to the New World, revealing that an advanced knowledge of equinoctial precession is evident in all myths of a golden age and its passing. This is a digitally enhanced reprint of the first edition.