four o’clock in the morning
` And Ruff and Ring ? They are the sweetest doves in the world . ' ` Doves ! Oh , Mysie , they would drive your aunt Ada distracted , with coo-roo-roo at four o'clock in the morning , just as she goes off to sleep . ' ` The Rigdums make no noise but a dear little chirp , ' triumphantly exclaimed Valetta . ` Do you mean the kittens ? We have a vacancy for one cat , you know . '