OCR Text |
Show i Straight Silica Glass. A deposit of silica mineral of volcanic vol-canic origin hns been found in Czechoslovakia, Czecho-slovakia, which can be used directly In the manufacture of glass without the need of adding any of the other common ingredients used in making up the glass batch. This silica mineral Is said to resemble lava and It is understood under-stood that the deposits are very large and that steps are being taken to utilize uti-lize them commercially. Chemical Trade Journal. |