At an early period in the history of Holland, a boy was born in Haarlem, a town remarkable for its variety of fortune in war, but happily still more so for its manufactures and inventions in peace. His father was a _sluicer_--that is, one whose employment it was to open and shut the sluices, or large oak-gates which, placed at certain regular distances, close the entrance of the canals, and secure Holland from the danger to which it seems exposed, of finding itself under water, rather than above it. When water is wanted, the sluicer raises the sluices more or less, as required, as a cook turns the cock of a fountain, and closes them again carefully at night; otherwise the water would flow into the canals, then overflow them, and inundate the whole country; so that even the little children in Holland are fully aware of the importance of a punctual discharge of the sluicer's duties. The boy was about eight years old when, one day, he asked permission to take some cakes to a poor blind man, who lived at the other side of the dyke. His father gave him leave, but charged him not to stay too late. The child promised, and set off on his little journey. The blind man thankfully partook of his young friend's cakes, and the boy, mindful of his father's orders, did not wait, as usual, to hear one of the old man's stories, but as soon as he had seen him eat one muffin, took leave of him to return home. As he went along by the canals, then quite full, for it was in October, and the autumn rains had swelled the waters, the boy now stopped to pull the little blue flowers which his mother loved so well, now, in childish gayety, hummed some merry song. The road gradually became more solitary, and soon neither the joyous shout of the villager, returning to his cottage-home, nor the rough voice of the carter, grumbling at his lazy horses, was any longer to be heard The little fellow now perceived that the blue of the flowers in his hand was scarcely distinguishable from the green of the surrounding herbage, and he looked up in some dismay. The night was falling; not, however, a dark winter-night, but one of those beautiful, clear, moonlight nights, in which every object is perceptible, though not as distinctly as by day. The child thought of his father, of his injunction, and was preparing to quit the ravine in which he was almost buried, and to regain the beach, when suddenly a slight noise, like the trickling of water upon pebbles, attracted his attention. He was near one of the large sluices, and he now carefully examines it, and soon discovers a hole in the wood, through which the water was flowing. With the instant perception which every child in Holland would have, the boy saw that the water must soon enlarge the hole through which it was now only dropping, and that utter and general ruin would be the consequence of the inundation of the country that must follow. To see, to throw away the flowers, to climb from stone to stone