GOLD.--Jewellery, gilt toy, thimble making, brassfounding, chains, spectacles, watch chains and cases, electro-plate, gun making, swords, pens. IRON and STEEL.--All trades. LEAD.--Chemical manufactures, alloy makers, pewter and Britannia metal, nickel and cobalt refining, electro-plate, whip, pen, nail, stereotyping, india rubber stamps, railway carriage, gun, brassfounding, thimble, ship’s log. MAGNESIUM.--Mathematical instrument. NICKEL.--Electro-plate, pen and pencil, stereotyping, whip button, needle, sword, photo-frames, fire-irons, tin plate, sewing machine, coach furniture and harness, bicycle, steam gauge. PLATINUM.--Mathematical instrument, nickel and cobalt refining, photo-frames, electro-plate, wedding ring, thimble, brassfounding. IRIDIUM and PALLADIUM.--Pen and pencil. QUICKSILVER.--Optical instrument, nickel and cobalt refining, stereotyping, thimble and whip, gauge, electro-plate, art metal, clock. SILVER.--Silversmith, jewellery, carriage furniture, whip mounts, sword, electro-plate, hook and eye, mathematical instrument, gun, silver plating, button, stereotyping, spectacles, chains, bedstead, thimbles. TIN.--Cocoa, stereotyping, whip, rolled metals, toilet pin, nail, needle, railway carriage, mathematical instrument, tool making, gas meters, roasting jack, engineers’ brassfounding, axle boxes, clock, bedstead, thimble, gauge, electro-plate, brassfounding, wholesale boot and shoe. TIN PLATE.--Various branches of the tin plate trade, ship’s log, steam gauge, art metal, nickel and cobalt refining, button, cocoa, printing, electro-plate, needle. ZINC and SPELTER.--Brass and alloy makers, yellow and sheathing metal, thimble, whip, art metal, galvanising, copper extraction, button, stereotyping, alkali, electro-plate, nail, watch chain. NOTE.--The applications of the compound metals or alloys, such as BRASS, BRITANNIA METAL, BELL METAL, GERMAN SILVER, GUN METAL, PHOSPHOR TIN, FERRO-MANGANESE, HARD AND SOFT SOLDERS, and others, are not given for want of space. The most important trades consuming metal in the form of leaf and powder--GOLD LEAF, SILVER LEAF and BRONZES--are bedstead manufacturing, picture frame making, japanning, lithography, art metal work (planishing.) ACIDS. ACETIC (VINEGAR).--Gelatine manufacture, button, lithography, whip, sword, art metal, gas fitting, bedsteads. BORACIC.--German silver, electro-deposition. CARBOLIC.--Gelatine, soap, ammunition works. CITRIC.--Lithography, art metal. HYDROFLUORIC.--Glass, gas fitting, nickel and cobalt works, button making, railway carriage. HYDROCHLORIC (MURIATIC or SPIRITS of SALT).--Metal trades generally, gas manufacture, gelatine, printing, chemical trades, railway carriage. HYDROCYANIC.--Button, pen and penholder, electro-plate. NITRIC (AQUA FORTIS).--Metal trades generally, especially brass, gelatine, button, whip, sword, gun, hook and eye.