Rensselaer Union, Volume 9, Number 40, Rensselaer, Jasper County, 21 June 1877 — One Danger of Blue Glass. [ARTICLE]

One Danger of Blue Glass.

lT*eems that tbe<frxcitajs,ent about tfi*c curative properties »as blue glass, wbiot filled ap so mucfi s|wiae,in.ihe newspaper a little.while ago, has productive id of icare harm than suck periodical epidemics, iif we«)nay call them? so, usually are. \ That Wue glass has *av .aurative propel erties rejsr ains yet to he proved; but that glass of that color vrite ,concentrate the rays of tkt sun, in a teaser.degree, as the .common burning glass dtoeq,.was known (before Get- Pleaaonton’s.b©ok*wasprinted :and made«o much of by .the,newspapers. yLgentlen&an of Brooklyn suttsjing from tweak ness «f,sight was rectaitlyiled by the i&dvice of <^efl- meaning friends to use spectacles off J)lue glass, sueh 4« certain opticians age-selling just now. The result was thatthis eyes, already tec weak to he.used muahdn ordinary ciroußistances, were exposedito a terrible glare and heat, which in tese diiatt a week entirely dethe eyeaixht of the sufferer. He is mow totally .blind. This is a lost, and flie gentleman would doubtless be .glad to bsnie other sufferers from weak eyes,know of hie case and draw a moral thecefrom. Another similar iosttuihe has come (under our observations, a jroung lady being, in this ease, the dupe of the bluc-glsae enthusiasts. It is worth bearing. yi. mmd that Oie only pntoerty of blue glass that has been proved « Its power to concentrate the rays of. Use sun and produce extraordlnasw heat. One of the most efficient methods employed in Siberia to blind politics! prisoners la to pass before the eyes of the captives a brigfit steel blade heated to a red heat; boi it seems likely that with the march of civilization the Russian jailers >sl adopt another method which will produce exsCdy the same result, that is, they will try blue glass. -N. T. Evening Poet.