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To the Editor:
—In the May 16, 1925, issue of The Journal, p. 1499, you speak of ultraviolet rays coming from the sky when the sun is obscured by cloud. Here in this part of California we have much high fog, which completely hides the sun. Can one get good effects from exposure in a tuberculous gland case on such a day? We have many of them. I have a patient with whom I wish to use heliotherapy for cervical enlarged glands.
—In the Report of the Medical Research Council for the year 1923-1924, to which reference was made in a footnote to The Journal's editorial comment, it is stated that:"Methods for standardization of ultraviolet radiation have been developed by Mr. Webster, Dr. Eidinow and Dr. Hill. A standard solution of acetone methylene blue is used in a standard quartz tube, and the bleaching of this solution is
Cleaves HC. "SUNLIGHT AND HELIOTHERAPY". JAMA. 1925;84(26):2021–2022. doi:10.1001/jama.1925.02660520049032
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