It may be asked, “Why melt sovereigns when gold, commercially pure, can be had from the dealers without paying costs of minting?” The answer is: the cost of minting is so small that against the other advantages attaching to the practice, it is of no account. These advantages are--1st, the grain gold of commerce cannot be relied upon for absolute freedom from accidental or superfluous alloy; and 2nd, that other qualities, such as uniform hardness, tenacity, and ductility--of the utmost importance to some branches of the trade--are ensured by using them. The metallurgical science and technical skill of our national assayers and melters at the mint, are therefore freely used by our manufacturers to enable them to alloy to the utmost nicety, and yet with a certainty of their goods, when made, passing the “Hall.” This, therefore, is a question of economy. CHANGES IN THE TRADE.--The immensely increased production of silver jewellery has tended to almost obliterate two departments which twenty-five years ago were of large proportions--viz., the gilt and the plated jewellery trades. The workmen in these branches have mostly turned their hands to silver working. Notice must be taken of some new developments, which have become practically new trades to the town. The manufacture of costly official insignia, such as mayoral chains, municipal badges, presentation caskets, gold and silver ceremonial keys, &c., is new since last report. More than seventy such mayoral chains have been made here since then. The manufacture of watch cases in gold and silver, but particularly in silver, is also a new and very considerable trade, employing hundreds of people. Not fewer than 60,000 to 80,000 silver watch cases per annum are now turned out from Birmingham manufactories. Another new trade, though at present not a large one, is diamond cutting, but there is no reason why it should not become an important business here.