84 Medicinal
by one of our American physicians that certain rays from the sun possessed marked curative qualities. The blue rays, in particular, had remarkable virtues. This gave rise to what was known as “The blue glass craze.” For a few months a great deal was published in the papers on the subject, and it was a common topic cf conversation. People had blue panes of glass put into their windows, or they covered their window panes with blue tissue for the light to fall through. Some had glass summer-houses made all in blue, and lived in them much of their time. Others made blue glass sanitariums of the upper story of their houses by putting in blue skylights.
Many marvellous cures were effected, but the agitation and the interest in the matter passed away as quickly as does a summer day’s thunder-storm. It was claimed that a sunbath under this blue glass was good for diseases of all kinds, and that blue glass was also good to assist vegetation. In fact, the believers in its virtues used it over their hotbeds.
