The sideboard and its pedestals

Proportion every step so that twice its height plus its depth equals the length of a natural pace on the level: two feet, or 24 pouces.

2 r + g = 24 pouces ≈ 65 cm (modern practice: 60–66 cm)

Hold that the beauty of the orders comes from fixed proportions that please by nature, as consonances do in music; where the ancients differ, the differences answer to circumstances such as distance and height.

Make the architrave round a door or window as wide as a sixth part of the opening’s breadth, and dress the openings of the principal floor more richly than those of the storeys above and below, with a frieze and cornice, and on the grandest a pediment.

architrave = ⅙ × width of the light

On the angles of a pediment set acroteria as high as half the tympanum, and on its apex one an eighth higher.

side acroteria = ½ tympanum height; middle = side × 9⁄8

Design the furniture of a principal room with the room: the chairs, settees and stools covered in the stuff of the walls or the bed, the tables and glasses drawn to the architecture of the piers and the chimneypiece, so that the room and its furniture are of one manner and one date.

In the formal room, stand the furniture against the walls and leave the middle of the room clear: a pier table (with its glass above) between each pair of windows, the sofa facing the fire, a chair either side of the chimneypiece, the chairs ranged round the walls in a line with the dado, to be brought out when wanted and put back after; and keep each wall symmetrical about its middle, its chimneypiece or its windows.