ten o'clock
Lewes asked next morning . He rose from the breakfast-table and lit a cigarette . There was no ceremony between Challis and his secretary . `` You forget our engagement for ten o'clock , '' said Challis . `` Need that distract us ? '' `` It need not , but does n't it seem to you that it may furnish us with valuable material ? '' `` Hardly pertinent , sir , is it ? ''