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11g

[[crossed out]] To Remove Varnish
Put a little powdered Resin, or pummise stone on the Picture, & rub it in all directions with your fingers. This reduces the Varnish to a powder & it  may be brushed off. It must be done carefully, not to rub the painting. For old pictures, the Varnish may be removed with a mixture of Spirits of Turpentine & spirits of wine, modified by oil. Have the oil & the spirits each in a little saucer with the left hand moisten the part to be operated on with the oil, (Linseed or Poppy) then with a rag dipped in the spirits held in the right hand rub the part; it quickly dissolves the oil & then acts on the Varnish, dissolving it - It must be instantly arrested by covering it with the oil rag. By this process, every part may be successively cleared of Varnish, always taking care not to suffer the spirits of wine to act, by dissolving the paint, after the removal of the Varnish 
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Try.
To mend a broken Canvass

Arrange the fractured part, saturate the back around it with melted wax, & apply a piece of cloth also saturated with the wax - press it neatly with the Palette knife- and when cool fill up the broken part with white lead ground with Starch size, & colour with oil paint. 

X
To line an Old Canvass

xx Take the Canvass off its Frame, Cut away the edges. Moisten the back with warm water. Have ready strained or a good Frame with Wedges, a strong cloth — On this spread with a broad brush some good paste with a little Venice Turpentine in it, and also the back of the old Canvass & apply it to the New pressing them well together with the Spatula & palm of the hand, & finally press it with a Warm Flat iron (not too hot), resting the face of the Picture on a smooth board or Marble, & interposing smooth strong paper. xx First carefully paste one or two thicknesses of the Tissue paper over the picture to prevent it being injured. This may afterwards be removed with tepid water.