Many of our readers will recall the blue-glass fad of the late 70's which had a brief career. While it lasted many popular articles appeared upon it, and a book was written which is still occasionally to be seen in secondhand book stalls and elsewhere. While some individual experimentation was undertaken at the time the subject was not considered seriously by the medical profession. It scarcely made any impression on medical literature of the day, at least we can recall no articles of note; it was generally dropped as a popular craze and quickly passed out of fashion. Judging from present developments in phototherapy in which the violet end of the spectrum is mainly used, it may be that there was a neglected germ of truth in the craze after all. We knew nothing then of the Roentgen or the Becquerel rays, nor do we yet know all their possibilities.
BLUE GLASS REDIVIVUS.. JAMA. 1901;XXXVI(2):114. doi:10.1001/jama.1901.02470020042012
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