1. Blue and red light, or, Light and its rays as medicine: showing that light is the original and sole source of life, as it is the source of all the physical and vital forces of nature, and that light is nature's own and only remedy for disease, and explaining how to apply the red and blue rays in curing the sick and feeble : together with a chapter on light in the vegetable kingdom Author(s): Pancoast, S. (Seth), 1823-1889 Publication: Philadelphia : Stoddart, [c1877] Subject(s): Color Therapy
