In most houses of this size, where available, both electricity and gas are used for lighting purposes. The cost of wiring this house complete for electric lights, including six wall switches, besides two three-way switches for the hall light, so that it can be operated either from the upper or lower floor, is about $325 if iron-armored conduit is used. If electric lights are used, the lighting fixtures must be combination fixtures, that is, fixtures that can be used for both gas and electricity. This will add about 40 per cent. to the cost of the gas fixtures, or 40 per cent. of $316.75, which amounts to $126.70. The total cost of wiring is therefore as follows: Electric bells $ 25.00 Light wiring 325.00 Extra cost of fixtures 126.70 ------- Total $476.70 PAINTING =14.= In taking off quantities for painting, it is customary to estimate the cost by assuming a price per square yard for each class of work, instead of estimating the material and labor separately. EXTERIOR WORK _Quantities_ Three coats of pure linseed oil and white lead in four colors: SQUARE YARDS Shingles (see item in Carpentry estimate) 269 Main cornice 130 Porch cornice 22 Porch posts 32 Spandrels 40 Porch skirting 14 Balustrade 52 Sash 64 Window sills 16 Porch floors and steps 72 --- Total 711 SQUARE YARDS One coat orange shellac and one of varnish: Porch ceiling (see item in Carpentry estimate) 58 INTERIOR WORK _Quantities_