Rub thoroughly with strong brine, or a solution of sal ammoniac dissolved in eight times its weight of water. If the tumor comes to a head, open it near the bottom with a lancet; or place a seton in it so as to admit the escape of purulent matter. Lice and Vermin Sometimes abound on cattle during the latter part of winter and spring. These are generally the result of _mange_, which is itself the effect of ill-feeding and ill-condition. They are removed with the cause. We doubt if they can be permanently kept off, where the animal is losing flesh and health. _Remedies._--Restore the health and condition, and sprinkle sand, ashes, or dirt plentifully around the roots of the horns, and along the ridge of the neck and back. A liberal application of train or other oil has nearly a similar effect. Never apply an ointment containing corrosive sublimate or other poison, as it may be licked by the animal or its fellows, who may thus become seriously poisoned. The Trembles, Producing _milk sickness_ (a most fatal disease) in the human family, from eating the milk or flesh of animals affected by it. This disease, which exists principally in the region of the Wabash River, is supposed by Dr. Drake to be owing to the _poison oak_, (Rhus Toxicodendron,) or _poison vine_, (Radicans,) which the animals eat. _Symptoms._--The animal mopes, is feverish and costive, but apparently preserves its appetite. The next stage of the disease is faintness and vertigo, which is shown when the animal is put upon exertion, being followed by excessive _trembling_ and entire prostration. _Remedy._--Almost every cathartic has been tried in vain. Indian corn, both dry and green, has been fed to all animals accustomed to eating it, and when they can be induced to feed upon it freely, purging is generally secured. Rest of the animal is absolutely essential while the disease continues, and is itself an effectual remedy in mild cases. * * * * * Besides the diseases enumerated, there are occasional epidemics, such as _black tongue_, _black foot_, or _foot root_, _&c._, which carry off great numbers of animals. Remedies for these are frequently not discovered, and the epidemic is allowed to run its course unchecked. The only preventives are such care, food, and management as the experienced herdsman knows to be best suited to the maintenance of the health and thrift of his stock. _Note._--Some ailments will be found under the head of _diseases_ of the other animals mentioned in this work, the general resemblance of which to each other will justify nearly a similar treatment.