DARK SKIN BARS SUNLIGHT.
The darker the colour of the skin the less it is affected by sunlight. Tests with half-breed and full-blooded Indians show convincingly that the greater the amount of black and red in untanned skin the less is the change in colour from exposure, Dr. Forest Clements, of the University of Oklahoma, reports,-in the • '.'Journal of Physical Anthropology." The heavier pigment.he holds, serves as a partial insulation from sun rays. This may explain, he holds, why negro and Italian children have been found more subject to rickets than those of lighter races, even when the diet and environment are essentially the same. The pigment produced by exposure probably differs from that in unexposed skin and forms a storehouse for the antirachitic vitamin. Darker skins do not let the beneficial rays through.
Dr. Clements found, however, that red skin changes less than black from exposure.
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Auckland Star, Volume LXII, Issue 305, 26 December 1931, Page 5
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147DARK SKIN BARS SUNLIGHT. Auckland Star, Volume LXII, Issue 305, 26 December 1931, Page 5
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