Marston was silent for a moment or two. Mabel's trust moved him and he was half embarrassed. Then he said: "There's a remark of yours I can't let go. No ground you think you ought to venture on is awkward to us. Very well. You don't approve Harry's marrying Flora, but what line d'you want me to take? I can't give him up and you're not going to give up your friend. It wouldn't be like you."
"I want you to stick to him closer than before. Flora and he may need us both. One feels that Wyndham's unstable, and you make good ballast, Bob."
"Well, I suppose I'm heavy enough and you have given me an easy job. It's curious, but not long since I told Harry I'd see him out if he wanted help and yesterday he hinted he'd like a partner for his voyage South. In a way, of course, I don't want to go."
Mabel hid her disturbance and mused. She was modern and sometimes frivolous, but she was very staunch and loved two people well. She did not want Bob to go and yet she thought he ought. Mabel had an instinctive distrust for Wyndham, although she liked him. She felt that with his temperament he would run risks in the South and he must be protected, for Flora's sake. Flora had promised to marry Wyndham and Mabel knew she would keep her word. Well, sober, honest Bob, who was really cleverer than people thought, was the man to take care of him.
"If Wyndham urges it, I must let you go," she said.
Marston gave her a steady glance, and nodded.
"I understand. Of course, I think your notion's ridiculous. Harry doesn't need a fellow like me, but you mean well. Although, in one way, I'd frankly like the trip, in another I'd much sooner stay."
"I know," said Mabel. "You're a dear, Bob."
Then she got up, smiling, and advanced to meet Chisholm and Flora, who came up the garden path.
Wyndham urged Marston to go with him, and a week or two afterwards Flora and Mabel stood on the deck of a paddle tug crossing a busy river mouth. The day was dull and a haze of smoke from two towns hung about the long rows of warehouses and massive river walls. Out in the stream, a small steamer with a black funnel and a row of white deckhouses moved seawards with the tide. The figures grouped along her rail got indistinct, but Flora's eyes were fixed upon two that stood away from the rest, until they faded. Then the African boat vanished behind the towering hull of an anchored liner.