_Causes._--We have lost several animals by this fatal disease, and are not aware of having cured any when severely attacked. In repeated instances, we have seen large flukes taken out of the liver, strongly resembling the common leech, which abounds in many of our swampy lands. It is certain that on new, low swamps and clay lands, cattle are most liable to it; and when they have been subject to repeated attacks in such localities, clearing and draining have checked it. Youatt attributes it to certain kinds of forage, which are peculiar to the above situations. We are rather inclined to ascribe it to exposure, to excessive dampness, and especially to miasma; for although the brute creation are perhaps less sensitive to these influences than man, yet, as they are governed by the same unvarying laws of nature, when subjected to conditions totally unsuited to their economy, they must suffer equally in kind, though probably not in degree, with the more refined human frame. But it is evident the disease, its causes, and remedies, are as yet imperfectly understood. _Remedies._--However intelligent men may differ as to its causes, all agree that the animal should first be bled, and then thoroughly purged. In obstinate cases, this last is a difficult matter. We have given repeated doses of powerful cathartics without producing any effect; and whenever the medicine is inoperative, death speedily follows. Large doses of common salt, or Epsom salts dissolved in water, are good purgatives, and if the animal neglects drinking after taking them, he should be drenched with copious draughts of water. These should be repeated every few hours, if ineffectual. Injections are sometimes useful, when medicine fails to act. These may be made of soap and water; or take 2 or 3 gills of oats boiled, 3 drachms saltpetre, 1½ oz. linseed oil, mix and use them when warm. The opening of the bowels may be followed with a pint of linseed oil, as an additional and gentle laxative. When the animal begins to recover, gentle astringents and tonics may be given. _Preventives._--We have more confidence in preventives than in remedies. Good keep, shelter, dryness, and clean pastures, will generally prevent attack. The cattle should at all times be supplied with two or three troughs under cover, on the sides and bottoms of which tar should be plentifully spread. Let equal portions of salt and slaked lime be in one; salt and wood ashes in another; and salt and brimstone in a third. Many farmers have entirely avoided this disease while using one or more of these, when they annually lost many by it previously. Hoof Ail Is indicated by lameness, fever, and a soft swelling just above the hoof.