'Look here,' said the Medical Man, 'are you perfectly serious? Or is this a trick—like that ghost you showed us last Christmas?''Upon that machine,' said the Time Traveller, holding the lamp aloft, 'I intend to explore time. Is that plain? I was never more serious in my life.'None of us quite knew how to take it.I caught Filby's eye over the shoulder of the Medical Man, and he winked at me solemnly.