| Show M Pl antea distinguished french electrician has recently invented a process of engraving on glass in which electricity takes an important part the surface to be engraved is first covered with a solution of nitrate of potash and is then connected with one of the poles of a battery by means of a platinum point the figure to be engraved is thus traced upon the surface of the glass it is said that this method secures a delicacy of outline which has not been attained by any other tool too in itself the process is perhaps only interesting to the technical men who are concerned with this class of work but it serves to show the general reader how rapid are the applications of the electric forces to the arts of life |
