Don't use hair dye, hair oil or pomades.
Don't wear evening dress in daytime.
Don't wear jewelry of a gaudy character; genuine jewelry modestly worn is not out of place.
Don't overdress yourself or walk affectedly.
Don't wear slippers or dressing-gown or smoking-jacket out of your own house.
Don't sink your hands in your trousers' pockets.
Don't whistle in public places, nor inside of houses either.
Don't use your fingers or fists to beat a tattoo upon floor desk or window panes.
Don't examine other people's papers or letters scattered on their desk.