Sometimes two mangers are placed in each stall - one for water, and another for grain. It is said that a horse drinks least when he has water constantly before him; and, if this be true, it is certainly desirable that he should never want it. But, I think, we are still in need of more experiments to decide this point It is beyond doubt that a horse who has water always within reach, will neve! take so much as to hurt himself; but it is doubtful whether he can be ready at all times to work.

When a water-trough is introduced, it ought o be so con-trived that it can be easily filled and easily empded. After standing a certain time, it becomes nauseously warm; the horse plays with it, washing his muzzle; and the vegetable matter which falls into it is soon decomposed, and the water becomes unfit for use. The trough ought to be connected with a pipe at the bottom, which will carry off the water when opened, by lifting the plug or turning the stopcock This is important. If the groom have to carry the manger its contents to the door, the supply of fresh water will be often neglected. The stables first built by Mr. Laing at Edinburgh, have water-mangers in each stall. The water is supplied by a pipe running into the manger, and covered with an iron slide to keep the horse's teeth off the stopcock. As far as I remember, there is no means of emptying the trough, without lifting out its contents, or carrying away the manger. The new stable wants the water-trough - so that, I suppose, it has not been found of much service.

I believe they are worse than useless - unless provided with a pipe to take away the soiled water, and another to bring the fresh.

Water-mangers must be made of iron. Lead is too soft, and wood is altogether unfit for the purpose. They should be cleaned every day; not merely emptied, but well scrubbed. Vegetable matter falls into the water and covers the manger with a glutinous slime, which soils every fresh supply, and which can be removed only by a good deal of rubbing with a brush or hard wisp. Loose boxes or other places intended for sick horses, should be furnished with these water-troughs whether the stables are or are not. They should be deeper, and may be shorter than the grain-manger, but of the same width, and placed at the same elevation.