Several attempts have been made, but without success, to invent a cheap electro-gildmg solution for metal jewellery. Much however, may he done with copper anodes; these may be so worked in the ordinary gold cyanide solution as slightly to alloy the deposit of gold with copper, and thus give a pleasing blush to a thin film of the precious metal. 1 he cheapest method of preparing these solutions is to dissolve pure sheet gold in a solution of potassium cyanide by means of current from a battery until a test sample receives a nice blush of gold in a few moments' exposure. The articles must be clean and well polished, lightly scratch-brushed, strung on wires attached to the negative pole of the battery, and dipped for a few moments in the gilding solution; then rinsed in clean hot water, and brushed with a scratch-brush of very fine soft wire.