Glass (To Join). Melt a little isinglass in spirits of wine, and add a small quantity of water. Warm the mixture gently over a moderate fire. When mixed, by thoroughly melting it will form glue perfectly transparent, and which will reunite broken glass so nicely and firmly that the joining will scarcely be perceptible to the most critical eye. Lime mixed with the white of an egg forms a very strong cement for glass, porcelain, etc, but it must be done neatly, as, when hard, the superfluous part cannot easily be smoothed or taken off.