'Not in!' exclaimed Mr. Knight.

'No, sir. He was called away half an hour ago or hardly, and may be out till very late.'

'Called away!' exclaimed Mr. Knight. He was astounded, shocked, pained. 'But I warned him three months ago!'

'Did you, sir? Is it anything very urgent, sir?'

'It's——' Mr. Knight hesitated, blushing. The girl looked so young and innocent.

'Because if it is, master left word that anyone was to go to Dr. Christopher's, 22, Argyll Street.'

'You will be sure to tell your master that I came,' said Mr. Knight frigidly, departing.

At 22, Argyll Street he was informed that Dr. Christopher had likewise been called away, and had left a recommendation that urgent cases, if any, should apply to Dr. Quain Short, 15, Bury Street. His anger was naturally increased by the absence of this second doctor, but it was far more increased by the fact that Dr. Quain Short happened to live in Bury Street. At that moment the enigma of the universe was wrapped up for him in the question, Why should he have been compelled to walk all the way from Bury Street to Argyll Street merely in order to walk all the way back again? And he became a trinity consisting of Disgusted, Indignant, and One Who Would Like to Know, the middle term predominating. When he discovered that No. 15, Bury Street, was exactly opposite No. 8, Bury Street, his feelings were such as break bell-wires.

'Dr. Quain Short is at the Alhambra Theatre this evening with the family,' a middle-aged and formidable housekeeper announced in reply to Mr. Knight's query. 'In case of urgency he is to be fetched. His box is No. 3.'