His heavy lips thickened outwards as he repeated the mysterious ejaculation, and there was more colour than usual in his dark face. He was but little older than Sylvia, and the two had played together as small children, but he had never shown any special preference for her as a playmate. What struck him, now, was evidently her beauty. There was a look in his eyes, and a sort of bristling of the meeting eyebrows that reminded Helen of his father, and her white lids quivered for an instant at the recollection, while she felt a little chill run through her.

The colonel also saw.

"Shall we cross over and speak to them?" he asked in a low voice. "Or shall we just go on?"

"Let us go on," answered Helen. "I will go and see them later. Besides, we have passed them now. Let us go on and get into the shade; it is dreadfully hot here."

"Won't you stop and speak to them, mother?" asked Archie Harmon, in a tone of deep disappointment. "Why, we have not seen them for ever so long!"

"We shall see them by and by," answered his mother. "It's too hot to go back now."

The young man turned his head and lagged a little, looking after the girl's graceful figure, till he stumbled awkwardly against a curbstone. But he did not protest any more. In his dull way, he worshipped his mother as a superior being, and hitherto he had always obeyed her with a half-childish confidence. His arrested intelligence still saw her as he had seen her ten years earlier, as a sort of high and protecting wisdom incarnate for his benefit, able to answer all questions and to provide him with unlimited pocket-money wherewith to buy bright-coloured posters and other gaudy things that attracted him. Up to a certain point, he could be trusted to himself, for he was almost as far from being an idiot as he was from being a normally thinking man. He was about as intelligent and about as well informed as a rather unusually dull schoolboy of twelve years or thereabouts. He did not lose his way in the streets, nor drop his money out of his pockets, and he could speak a little French and German which he had learned from a foreign nurse, enough to buy a ticket or order a meal. But he had scarcely outgrown toys, and his chief delight was to listen to the stories his mother told him. She was not very inventive, and she told the same old ones year after year. They always seemed to be new to him. He could remember faces and names fairly well, and had an average recollection of events in his own life; but it was impossible to teach him anything from books, his handwriting was the heavy, unformed scrawl of a child, and his spelling was one long disaster.

So far, at least, Helen had found only his intellectual deficiency to deal with, and it was at once a perpetual shame to her and a cause of perpetual sorrow and sympathy. But he was affectionate and docile enough, not cruel as some such beings are, and certainly not vicious, so far as she could see. Dull boys are rarely mischievous, though they are sometimes cruel, for mischief implies an imagination which dulness does not possess.

Archie Harmon had one instinct, or quality, which redeemed him from total insignificance and raised him above the level of an amiable and harmless animal. He had a natural horror of taking life, and felt the strongest possible impulse to save it at any risk to himself. His mother was never quite sure whether he made any distinction between the value of existence to a man, and its worth to an animal, or even to an insect. He seemed not to connect it with its possessor, but to look upon it as something to be preserved for its own sake, under all circumstances, wherever it manifested itself. At ordinary times he was sufficiently cautious for his own safety, and would hesitate to risk a fall or scratch in climbing, where most boys would have been quite unaware of such possibilities. But at the sight of any living thing in danger, a reckless instinct to save it took possession of him, and his sluggish nature was roused to sudden and direct activity, without any intermediate process of thought. He had again and again given proof of courage that might have shamed most men. He had saved a child from drowning in the North River, diving after it from a ferryboat running at full speed, and he had twice stopped bolting horses--once, a pair with a heavy brougham in the streets of New York, and once, in the park, a dog-cart driven by a lady. On the first of these two occasions he had been a good deal cut and bruised, and had narrowly escaped with his life. His mother was too brave not to be proud of his deeds, but with each one her fears for his own daily safety increased.

He was never violent, but he occasionally showed a strength that surprised her, though he never seemed to care about exhibiting it. Once, she had fallen and hurt her foot, and he had carried her up many stairs like a child. After that, she had felt now and then as men must feel who tame wild beasts and control them.