Britannia metal may be soldered with pewterers' solder, which may be made of 2 pares of bismuth, 1 part of lead, and 1 part of tin. Such a solder is usually obtainable of any dealer in metal-workers' sundries; or it maybe made by melting the lead in a plumber's ordinary ladle, and adding the tin and bismuth. A little resin should be sprinkled on the surface to prevent oxidation of the molten alloy, which should then be well stirred, and poured into an iron mould. When using the alloy, with a sharp knife first scrape the metal where it is to be soldered, and then rub a little tallow over the cleansed part. Melt some solder from the stick upon the part to be soldered, and, with a fine jet from a blowpipe, blow gently on the solder until it flows over the parts to be joined.