Show frozen eye glasses optical glasses cannot be cut ut un less fixed to this end they are blued to iron frames of dif ferent sizes arid and various napes hapes un tit ill recently when finished the pates of glass class have been knocked froin the fr frames Villes witt with d j light ni aliet cautiously struck upon the lie edges ede of the plates the work was horri hard ind and its HS ahr least vas shiver of the eapp chouch ble disqualified tha th lesla leils the work trian man needed a very light skillful hand blind the discovery was made bv art an expert optic optician lan that flint the blocket blo kg of crystal separated rated mure more easily when ft lien fley ajr hit and been exposed to tile the cold during file lie highl this dincov ery line lin effected a revolution in lilt manufacture of special til classes |