What is “Natural” Light?

Corth R. , “Biological Implications of Artificial Illumination” SPIE, 229,1 (1980).

Corth R. & Hoffman R. A. , “Does artificial light affect man's health? Probably not.” L.D.&A., 3, No. 11, 30(1973).

Guth S. K. “Some observations on the biological effects of light” L.D.&A., 3, No. 11, 24 (1973).

Thorington L. , “Light, biology, and people,” L.D.&A., 3, No. 11, 19 (1973); ibid, No. 12, 31.

Worthey J. A. , “Opponent-colors approach to color rendering,” J.O.S.A. 72 (1982).

Wurtman R. J. , Weisel J. , “Environmental lighting and neuroendocrine function: relationship between spectrum of light source and gonadal growth,” Endocrinology, 85, 1218(1969).

Wagner R. H. Environment and Man, Norton, N.Y. 1974.

Borne G. H. , Primate Odyssey, Putnam, N.Y. 1974.

Buettner-Janusch J. , Origins of Man, Wiley, N.Y., 1966.

Campbell B.G. , Human Evolution, Aldine Pub. Co., Chicago, 1967.

Kretzoi M. , “New ramapithecines and Pliopithecus from the Lower Pliocene of Rudabanya in North-Eastern Hungary,” Nature, 257, 578 (1975).

Andrews P. , & Walker A. , “The primate and other fauna from Fort Ternan, Kenya.” in Human Origins, ( Issac G. L. & McCown E. R. , eds.) Benjamin W. A. , Menlo Park, 1976.

Van Courvering J. A. H. & Van Courvering J. A. , “Early Miocene mammal fossils from East Africa.” in Human Origins, ( Issac G. L. , & McCown E. R. , eds.) Benjamin W. A. , Menlo Park, 1976.

Andrews P. , & Tobien H. , “A new Miocene locality in Turkey with evidence on the origin of Ramapithecus and Sivapithecus,” Nature, 268, 699 (1977).

Pilbeam D. R. , Meyer G. E. , Badgley C. , Pickford M. H. L. , Behrensmeyer A. K. , & Ibrahim Shah S. M. , “New Hominoid primates from the Siwaliks of Pakistan and their bearing on hominoid evolution,” Nature, 270, 689 (1977).

Greenfield L. O. , “On the adaptive pattern of Ramapithecus,” Am. J. Phys. Anthropol. 50, 527 (1979).

Lewis O. J. , “Brachiation and the early evolution of man,” Nature 230, 577 (1971).

Kennedy G. E. , “Hominoid habitat shifts in the Miocene,” Nature 271, 11, (1978).

Lovejoy C. O. , “The origin of man,” Science 211, 341 (1981).

Federer C. A. , & Tanner C. B. , “Spectral distribution of light in the forest,” Ecology, 47, 555 (1966).

Lythgoe J. N. The Ecology of Vision, Clarendon Press, Oxford, 1979.

Ali M. A. , ed. Sensory Ecology, Plenum Press, N.Y., 1975.

Wolken J. J. , Photoprocesses, Photoreceptors, and Evolution, Academic Press, N.Y., 1975.

Levine J. S. , & MacNichol E. F. Jr “Color vision in fishes,” Sci. American, 246, No. 2, 140 (1982).

Meyer D. B. , “The avian eye and its adaptation,” in Handbook of Sensory Physiology, VII/5 (ed. Crescitelli F. ), p. 549. Springer-Verlag, Berlin 1977.

McFarland W. N. , & Munz F. W. “The evolution of photopic visual pigments in fishes” Vision Res. 15, 1071 (1975).

Gibson J. J. , The Perception of the Visual World, Greenwood Press, Westport 1974, p. 60.

Hughes A. , “The topography of vision in mammals of contrasting life style: Comparative optics and retinal organization.” In Handbook of Sensory Physiology, Vol. VII/5, ( Crescitelli F. , ed.) Springer-Verlag, Berlin 1977, p. 613.

Witteridge D. , “Projection of optic pathways to the visual cortex” in Handbook of Sensory Physiology, Vol. VII/3B, ( Jung R. , ed.) Springer-Verlag, Berlin 1973, p. 247.

Hughes A. , “A comparison of retinal ganglion cell topography in the plains and tree kangaroo,” J. Physiol., 244, 61P (1975).

Luck C. P. “The comparative morphology of the eyes of certain aftrican suiformes,” Vision Res., 5, 283 (1965).

Gros Clark W. E. Le The Antecedents of Man, Quandrangle Books, Chicago 3rd. Ed. 1971.

DeValois R. L. , “Analysis and coding of color vision in the primate visual system,” Cold Springs Harbor Symposia on Quant. Biol., 30, 567 (1965).

Zeki S. “The representation of colours in the cerebral cortex,” Nature 284, 412 (1980).

Bowmaker J. K. , Dartnall H. J. A. , & Mollon J. D. “Microspectrophotometric demonstration of four classes of photoreceptors in an old world primate” J. Physiol. 298, 131 (1980).

Loomis W. F. “Skin-pigment regulation of vitamin-D biosynthesis in man,” Science 157, 501 (1967).

Quevedo W. C. Jr. , Fitzpatrick T. B. , Pathak M. A. , & Jimbow K. “Role of light in human skin color variation,” Am. J. Phys. Anthrop., 43, 393, (1975).

Hess A. F. , “Newer aspects of rickets problem,” J. Am. Med. Assoc., 78, 1177 (1922).

Neer R. M. , “The evolutionary significance of vitamin D, skin pigment, and ultraviolet light,” Am. J. Phys. Anthrop., 43, 409 (1975).

Freemon F. R. , “Vitamin D & skin pigments,” Science 158, 579 (1967).

MacLaughlin J. A. , Anderson R. R. , & Holick M.F. “Spectral power distribution of sunlight limits the formation of previtamin D3 in human skin.” Presented at the 9th annual meeting of the American Society for Photobiology, June 14-18, 1981, Williamsburg, Virginia. Page 75 of abstracts of meeting.

Cowles R. B. , “Some ecological factors bearing on the origin and evolution of pigment in the human skin,” Am. Naturalist, 93, 283 (1959).

Machida H. “The distribution of melanotic melanocytes in the skin of subhuman primates,” in Biology of Skin, Vol. 8, The Pigmentary System. ( Montagna W. & Hu F. eds.) Pergamon Press, Oxford 1966.

Barnicot N. A. , “Climatic factors in the evolution of human populations,” in “Genetics and Twentieth Century Darwinism,” Cold Spring Harbor Symposia on Quantitative Biology, Vol. 24, 1959.

Heer R. R. , “The absorption of human skin between 430 and 1010mu for black body radiation at various color temperatures,” Science, 115, 15 (1952).

Baker P. T. , “American Negro-White differ ences in heat tolerance,” H. Q. Quartermaster Res. and Engin. Command, U.S. Army, Techn. Rep. EP75, 1–19. Quoted in Barnicot.⁴⁴

Daniels D. Jr , Post P. W. , Johnson B. E , “Theories of the role of pigment in the evolution of races,” in Pigmentation, ( Riley V. , ed.) AppletonCentury-Crofts, Meredith Corp. 1972.

Murray F. G. , “Pigmentation, sunlight and nutritional disease,” Am. Anthrop., n. s. 36, 438 (1934). Maxwell, J. P., “Further studies in osteomalacia,” Proc. Royal Soc. Med., 23, 639 (1930).

Blest A. D. , “Relations between moths and predators,” Nature 197, 1047 (1963).

Pathak M. A. , “Photobiology of melanogenesis: biophysical aspects,” in Biology of Skin, vol 8, The Pigmentary System. ( Montagna W. , & Hu F. , eds) Pergamon Press, Oxford 1966.

Gupta M. M. , Round J. M. , & Stamp T. C. B. , “Spontaneous cure of vitamin-D deficiency is Asians during summer in Britain,” Lancet 1 586, 586 (1974).

Johnson B. E. Daniels F. Jr , & Magnus I. A. , “Response of human skin to ultraviolet light,” in Photophysiology, ( Giese A. C. ed.) Academic Press. New York 1968, p. 174.

Abt I. A. , Pediatrics, Vol 2, Chap. 32; N. B. Saunders Co., Phil. 1923.

Thomas W. A. , “Health of a carnivorous race. A study of the Eskimo,” J. Am. Med. Assoc., 88, 1559 (1927).

Blum H. F. , “Does the melanin pigment of human skin have adaptive value?,” Quart. Rev. Biol 36, 50(1961).

Parrish J. A. , Anderson R. R. , Urbach F. , & Pitts D. UV-A, Plenum Press, New York, 1978. Chaps. 7-9.

Kurzel R. B. Wolbarsht M. L. , & Yamanshi B S. “Ultraviolet radiation effects on the human eye. in Photochemical and Photobiological Reviews, Vol 2, ( Smith K. C. , ed.) Plenum Press 1977, p. 133.

Webb R. B. , “Lethal and mutagenic effects of near-ultraviolet radiation,” ibid. p. 169.

Ham W. T. Jr , Ruffolo J. J. , Mueller H. A. , & DuPont Guerry III , “The nature of retinal radiation damage: dependence on wavelength, power level and exposure time“ Vision Res. 20, 1105 (1980).