Show 5 to preserve pictures A new metLo metho dof preserving pictures i is being experimented exper in L london it consists of placing the surface of the picture beit canvas or paper in a vacuum thus protecting it from atmospheric action the picture is in a metal frame or case covering the back and sides and projecting from the sides like an ordinary frame A plate of glass is inserted in the edges of the case just as in an ordinary frame and hermetically sealed to UL the metal the air is then withdrawn from between the surface of the picture and the glass and the picture is in a vacuum it is believed thid plan will effectually protect pictures froni the action of dampness air gases binh and 0 ther other causes that operate to destroy paintings exposed or framed iti in the ordinary way |