HOW TO PRESERVE PENCIL DRAWINGS.

Observer, Volume 9, Issue 524, 5 January 1889, Page 14

HOW TO PRESERVE PENCIL DRAWINGS.

To preserve pencil drawings slightly warm a ?heet of ordinary drawing paper ; then place it carefully on the surface o'i a solution oi white robin in alcohol, leaving it thero long enough to become thoroughly moistened. Afterward drying in a current of warm air. Paper prepared, in this way hag a xeij smooth surface. In order to fix'the drawing, the paper is simply tobe warmed for a lew moments. This process may prove useful J'or the preservation of plans or designs when want of time or any other cause will not allow of draughtsmen reproducing them in ink. A simpler plan than this is to brush. over the back of the paper containing the pencil sketch with a weak eolation of shellac in alcohol. Chalk and pencil drawings may be fixed (though not as thoroughly as by the methodsmentioned above) by washing them with skimmed milk, or with water holding in solution a little isinglass or gum. When the first is used great care must be taken to deprive it of the whole of the cream, as the latter substance would cause the drawing to lOOK streaky. An easy way of applying these fluids is to pour thorn into a shallow vessel, and to lay the drawing ilat upon the smfaco of the liquid ; after which it should be gently removed, and placed on white blotting paper in an inclined position to drain and dvy.