A good hen will not stay away more than half an hour, unless infested with vermin, from want of having a proper dust-heap. But hens have often been absent for more than an hour, and yet have hatched seven or eight chickens; and instances have been known of their being absent for five and even for nine hours, and yet hatching a few. The following remarkable instance is recorded by an excellent authority: "Eggs had been supplied and a sitting hen lent to a neighbour, and, when she had set in a granary ten days, she was shut out through the carelessness of a servant. Being a stranger in the farmyard, the hen was not recognised, but supposed to have strayed in from an adjoining walk, and thirty hours elapsed before it was discovered that the hen had left her nest. The farmer's wife despaired of her brood; but, to her surprise and pleasure, eight chickens were hatched. The tiled roof of the granary was fully exposed to the rays of the sun, and the temperature very high, probably above 80 deg. during the day, and not much lower at night." Valuable eggs, therefore, should not be abandoned on account of a rather lengthened absence; and ordinary eggs should not be discarded as worthless if the hen has already sat upon them for a fortnight or so; but if she has been sitting for only a few days, it is safer to throw them away, and have a fresh batch. During the hen's absence, always look at the eggs, remove any that may have been broken, and very gently wash any sticky or dirty eggs with a flannel dipped in milk-warm water. See that they are dry before putting them back. If the nest is also dirty, replace it with fresh material of the same kind. Gently drive the hen back to her nest as quickly as possible, to prevent any damage from the eggs becoming chilled. If a hen should break an egg with her feet or otherwise, it should be removed as soon as it is seen, or she may eat it, and, liking the taste, break and eat the others. Some hens have a bad habit of breaking and eating the eggs on which they are sitting, to cure which some recommend to boil an egg hard, bore a few holes in it, so that the inside can be seen, and give it while hot to the culprit, who will peck at the holes and burn herself; but hens with such propensities should be fattened for the table, for they are generally useless either for sitting or laying.