Influence of Ocular Light Perception on Metabolism in Man and in Animal

This book was written to show that light is a primal element of life. All life originates and develops under the influence of the light of the sun, that "super­ terrestrial natural force" (Goethe). Sunlight influences the vital processes not onlyofthe plant (e. g. , heliotropism, photosynthesis) and the animal (e. g. , color change, maturation of the gonads) but of man as well. The human organism ...