A constant supply of fresh clean water is indispensable. Fountains are preferable to open vessels, in which the fowls are apt to void their dung, and the chickens to dabble and catch cold, often causing roup, cramp, &c. The simplest kind of water vessel is a saucer made of red pottery, containing several circular, concentric troughs, each about an inch wide, and of the same depth. Chickens cannot get drowned in these shallow vessels, but unless placed behind rails the water will be dirtied by the fowls. They are sold at all earthenware shops, and are used for forcing early mustard in. A capital fountain may be made with an earthenware jar or flower-pot and a flower-pot saucer. Bore a small hole in the jar or flower-pot an inch and a half from the edge of the rim, or detach a piece about three-quarters of an inch deep and one inch wide, from the rim, and if a flower-pot is used plug the hole in the bottom airtight with a piece of cork; fill the vessel with water, place the saucer bottom upwards on the top, press it closely, and quickly turn both upside down, when the water will flow into the saucer, filling up the space between it and the vessel up to the same height as the hole in the side of the jar or flower-pot, therefore the hole in the side of the rim of the vessel must not be quite so deep as the height of the side of the saucer; and above all the plug in the flower-pot must be airtight. This fountain is cheap, simple, and easily cleaned. Water may also be kept in troughs, or earthenware pans, placed in the same way. The fountains and pans should be washed and filled with fresh water once every day, and oftener in warm weather; and they should occasionally be scoured with sand to remove the green slime which collects on the surface, and produces roup, gapes, and other diseases. In winter the vessels should always be emptied at night, in order to avoid ice from forming in them, which is troublesome to remove, and snow must never be allowed to fall into them, snow-water being most injurious to poultry. CHAPTER V. EGGS.