It is probable that the gases which arose from this imperfectly drained estate played their part in the work of destruction; not only by coming in immediate contact with the blood through the medium of the air-cells in the lungs, but by mixing with the food in the process of digestion. This may appear a new idea to those who have never given the subject a thought; yet it is no less true. During the mastication of food, the saliva possesses the remarkable property of enclosing air within its globules. Professor Liebig tells us that "the saliva encloses air in the shape of froth, in a far higher degree than even soap-suds. This air, by means of the saliva, reaches the stomach with the food, and there its oxygen enters into combination, while its nitrogen is given out through the skin and lungs." This applies to pure air. Now, suppose the sheep are feeding in pastures notorious for giving out noxious gases, and at the same time the function of the skin or lungs is impaired; instead of the "nitrogen" or noxious gases being set free, they will accumulate in the alimentary canal and cellular tissues, to the certain destruction of the living integrity. Prof. L. further informs us that "the longer digestion continues,--that is, the greater resistance offered to the solvent action by the food,--the more saliva, and consequently the more air, enter the stomach." STAGGERS. This disease is known to have its origin in functional derangement of the stomach; and owing to the sympathy that exists between the brain and the latter, derangements are often overlooked, until they manifest themselves by the animal's appearing dull and stupid, and separating itself from the rest of the flock. An animal attacked with staggers is observed to go round in a giddy manner; the optic nerve becomes paralyzed, and the animal often appears blind. It sometimes continues to feed well until it dies. _Indications of Cure._--First, to remove the cause. If it exist in a too generous supply of food, reduce the quantity. If, on the other hand, the animal be in poor condition, a generous supply of nutritious food must be allowed. Secondly, to impart healthy action to the digestive organs, and lubricate their surfaces. Having removed the cause, take Powdered snakeroot, 1 ounce. " slippery elm, 2 ounces. " fennel seed, half an ounce. Mix. Half a table-spoonful may be given daily in warm water, or it may be mixed in the food. _Another._ Powdered gentian, 1 ounce. " poplar bark, 2 ounces. " aniseed, half an ounce. Mix, and give as above. If the bowels are inactive, give a wine-glass of linseed oil.