The Messrs. Elkington have doubled their trade since the Birmingham Exhibition in 1848, and there is reason to believe that, instead of displacing labour as was anticipated, this invention has increased the number and the wages of the parties employed. * * * * * The Britannia Metal manufacture is closely allied to the plate trade; an ingenious improvement, well worth examination, has recently been introduced by Messrs. Sturgis of Broad Street, by which teapots are cast whole, instead of having the spouts and handles soldered on. * * * * * The Gilt Toy and Mock Jewellery Trade, once one of the staple employments of Birmingham artizans, has dwindled away until it now occupies a very insignificant place in the Directory. Bad cheap articles, with neglect of novelty and taste in design, ruined it. In cheap rubbish foreigners can always beat us, but the Birmingham gilt toy men made things "to sell" until no one would buy. * * * * * FOX AND HENDERSON'S MANUFACTORY.--The London works conducted by Messrs. Fox, Henderson, and Co., who have become known to all the world by their rapid and successful erection of the Crystal Palace, are situated at Smethwick, about four miles from Birmingham on the Dudley Road. They were established after the commencement of the London and Birmingham Railway, for the manufacture of iron and machinery required in the construction of railways. The shops, which are of large dimensions, are built in a quadrangle, enclosing a large area or open space, which is employed as a yard for material or finished goods as may be accidentally required. The first place into which the stranger is shown is called the Truck shop, and will accommodate three hundred carriage builders and carpenters. Adjoining it is the Boiler Makers' shop, or, more properly, a shop for workers in plate-iron, for boilers are not made in the establishment, but iron doors, navy casks, and wrought iron railway carriages are produced in this department. These shops form one side of the quadrangle.