Occasionally it is desirable to protect metals by plating them with copper or other metal, but this can not be done conveniently because of the large size of vat which would be necessary in order to submerge the article to be coated. To overcome this difficulty R. Goldschmidt has tried the following method, and found that it gives excellent results. It consists simply in cleaning carefully the article which is to be protected, so as to remove all dirt and grease and leave a surface suitable for plating by the ordinary process. The article is then attached to the negative pole of the source of current and an ordinary paint brush, capable of containing a considerable amount of electrolyte, is attached to the positive pole. This brush is then passed over the part which is to be plated, carefully, and as the current passes through it, a smooth, adherent, strong coating of the metal may be built up to any desired thickness. The process is easily carried out and gives results of excellent character. The author, in his experiments, used a voltage of 110, but placed a number of incandescent lamps in series with the brush, so as to limit the current to about one-tenth of an ampere. He was able to plate successively in this way silver, gold, copper and nickel, and had no difficulty in coating different parts of the same object with different metals. Nickel was found preferable for a protective coating, because of the low voltage required in the process. Details of the solutions employed are given, cyanide solutions being used for gold and silver, and sulphate solutions for copper and nickel.-LTndustrie Electrique (Paris),