"So have I," agreed Colin with enthusiasm. "What do you say to repeating the experiment next week?"
"Only on one condition," replied Nancy. "I've got to take my turn in paying for dinner."
"But that's absurd!" protested Colin. "I'm a great deal richer than you are."
"No, you're not," was the indignant answer. "Why, I'm simply rolling in money. I've no expenses now except the rent of my studio, and Doctor Ashton pays me at least twice what I'm worth."
"I don't believe that," said Colin. "Still, if you're determined to be proud and ostentatious I suppose you must have your way."
He swerved to the left behind St. George's Hospital, and, cutting through the select precincts of Belgrave Square, came out within a few yards of the King's Road. In another minute they were turning the corner into Jubilee Place.
"Next week's a bargain, then," said Colin, as they stood facing each other on the empty pavement. "It's no good trying to fix a day at present; I'll just ring up one morning and we'll arrange it over the 'phone."
Nancy nodded. "That will be best," she said. "You mustn't desert the Professor—not unless he can manage all right without you."
She gave him her hand, which Colin squeezed in a friendly grip.
"Good-night, Nancy," he said. "Sleep well, and when you see Mark, tell him that for once in his life he actually prescribed the right treatment."