Suddenly, while he was meditating in the darkness, he saw the trunk lights of the Maud illuminated, as though there was a fire in her cabin. He did not wait to study the cause, but jumping into his skiff, he pushed off, and sculled with all his might towards the yacht. He was mad and desperate, for the Maud was on fire! He leaped on board, with the key of the brass padlock which secured the cabin door in his hand; but he had scarcely reached the deck before he saw a man on the wharf retreating from the vicinity of the yacht. Then he heard the flapping of a sail on the other side of the pier; but he could not spend an instant in ascertaining who the person was. He opened the cabin door, and discovered on the floor a pile of shavings in flames. Fortunately there was a bucket in the standing-room, with which he dashed a quantity of water upon the fire, and quickly extinguished it. All was dark again; but to make sure, Donald threw another pail of water on the cabin floor, and then it was not possible for the fire to ignite again. Although the deck had been swept clean before the launch, the side next to the wharf was littered with shavings, and a basket stood there, in which they had been brought on board, for it was still half full. Donald found that one of the trunk lights had been left unfastened, in the hurry and excitement of attending the festival at Mr. Rodman's house. Through the aperture the incendiary had stuffed the shavings, and dropped a card of lighted matches upon them, for he saw the remnants of it when he threw on the first water. Who had done this outrageous deed? Donald sprang upon the wharf as he recalled the shadowy form and the flapping sail he had seen. Leaping upon the pier, he rushed over to the other side, where he discovered a sail-boat slowly making her way, in the gentle breeze, out of the dock. Beyond a peradventure, the boat was the Juno. Her peculiar rig enabled him readily to identify her. Was Laud Cavendish in her, and was he wicked enough to commit such an act? Donald returned to the Maud to assure himself that there was no more fire in her. He was satisfied that the yacht was not injured, for he had extinguished the fire before the shavings were well kindled. He fastened the trunk lights securely, locked the cabin door, and taking possession of the basket, he embarked in his skiff again. Sculling out beyond the wharf, he looked for the Juno. The wind was so light she made but little headway, and was standing off shore with the breeze nearly aft. It was Laud's boat, but it might not be Laud in her. Why should the wretch attempt to burn the Maud? Then the scene in Mr. Rodman's garden, when Laud had been invited to leave, came to his mind, and Donald began to understand the matter. While he was thinking about it, the moon came out from behind a cloud which had obscured it, and cast its soft light upon the quiet bay, silvering the ripples on its waters with a flood of beauty.