Workshop receipts

action alloy alumina antimony armature battery bell binding-screw bismuth brass brittle bronze brush calcined carbon cast cell cent charcoal charge chloride circuit coating coils colour connected containing cooling copper crucible cupellation cylinder diameter dipped dissolved dynamo electric electro-magnet electromotive force employed enamel fire fixed furnace fused fusible glass glaze gold hard hardening heat hole hydrochloric acid iridium iron lacquer lead Leclanché cells lime liquid machine magnet malleable manganese melted mercury metal mixed mixture motor moulds nickel nitric acid obtained operation oxide pass piece placed plate platinum pole polished porous potash produced proportion quantity red heat resistance reverberatory furnace ring roasting round screw silica silver slag soda sodium soldered solution spring steel sulphate sulphide sulphuric acid surface telephone temperature thick thin tion tube vapour varnish washed welding wire zinc