OCR Text |
Show To Manufacture Optical Glass. The manufacture of American optical op-tical glass is about to be inaugurated on a commerciU basis, a large factory having been erected by an optical firm of Rochester, N. Y., which, it is said, will be equipped to make all kinds of lenses from the tiny glass used in the microscope to that of the searchlight search-light measuring several feet in diameter. diame-ter. The first effort in this direction was made about twenty-five years ago, and the effort was a failure and was abandoned. The latest effort in the manufacture of this glr.ss was begun experimentally by the Rochester firm a few years ago, and when the war broke out this had just demonstrated its success, so that its expansion would have come along in the regular order of things, but the necessity for a plant of this kind in this country has forcibly demonstrated by the war, which has completely cut off the supply sup-ply of optical glass, which came heretofore here-tofore from one or the other of the belligerent countries. I |