Heliotherapy or Sun Cure

but on light for its life, and even the lightest clothing constitutes an artificial barrier between the body and the sun, that great source of life and energy. The practice of sun cure is as old as the earth, and a common saying is that ' There is nothing new under the sun Experimental contributions.?The remarkable successes of isolation in cases of surgical tuberculosis at high altitudes have largely been ascribed to the influence of the sun's rays. The results obtained by the research methods of Hertz and Roselett are as follows :? (a) The difference in intensity of ultra-violet radiation in the sun between mountain and lowlands is greater in winter and becomes proportionately smaller as we approach the warmer