The principles of light and color: including among other things the harmonic laws of the universe, the etherio-atomic philosophy of force, chromo chemistry, chromo therapeutics, and the general philosophy of the fine forces, together with numerous discoveries and practical applications ..
Edwin D. Babbitt's 1878 treatise from New York, combining color therapy, spectrum science and speculative atomic philosophy for American readers of occult and health literature. Wood engravings mix laboratory-style diagrams — interference rings, prism spectra, magnified tissue and crystal forms — with schematic figures of force and radiation, useful for geometric pattern fields, halftone-like hatching, and diagram borrowings.
