As we have had many enquiries respecting this kind of glue, we will give the receipt as it comes to us. Take one pound of india rubber and then dissolve it in the exact quantity of naphtha, or oil of tar to render it moderately thin (about a gallon) to which is added shellac, and the whole allowed to mas-cerate for ten days, until it attains to a cream like consistency. After which more shellac is added to make it pretty stiff, when it is heated and then poured out into plates. It is heated to 250, when applied. The mixture is that of india rubber and shellac dissolved in naphtha. It is insoluble.in water and not affected by the heat of the sun.