Shellac is used for fixing the fastenings on brooches made of jet, shell, pearl, wood, or stone. A moderate heat only is required to unite them. In some cases " Coaguline," a cement obtainable of chemists, is used. Silver brooches can he repaired with ordinary tinman's solder. For a gold or gilt brooch, as well as silver ones, "hard" solder, purchasable under the name of "silver solder ' or "gold solder," is preferable. These solders run at a red heat. The heat required to run tinman's solder does not injure gold or silver plating.