It was precisely twelve o'clock; twelve by Big Ben; whose stroke was wafted over the northern part of London; blent with that of other clocks, mixed in a thin ethereal way with the clouds and wisps of smoke, and died up there among the seagulls--twelve o'clock struck as Clarissa Dalloway laid her green dress on her bed, and the Warren Smiths walked down Harley Street. Twelve was the hour of their appointment. Probably, Rezia thought, that was Sir William Bradshaw's house with the grey motor car in front of it. The leaden circles dissolved in the air.