SORES AND DISEASES.

If a horse be sweating at the time he is unsaddled, it is well to strap the folded saddle-blanket upon his back with the surcingle, where it is allowed to remain until he is perfectly dry. This causes the back to cool gradually, and prevents scalding or swelling. Some persons are in the habit of washing their horses' backs while heated and sweating with cold water, but this is pernicious, and often produces sores. It is well enough to wash the back after it cools, but not before. After horses' backs or shoulders once become chafed and sore, it is very difficult to heal them, particularly when they are continued at work. It is better, if practicable, to stop using them for a while, and wash the bruised parts often with castile soap and water. Should it be necessary, however, to continue the animal in use, I have known very severe sores entirely healed by the free application of grease to the parts immediately after halting, and while the animal is warm and sweating. This seems to harden the skin and heal the wound even when working with the collar in contact with it. A piece of bacon rind tied upon the collar over the wound is also an excellent remedy.

In Texas, when the horse-flies are numerous, they attack animals without mercy, and where a contusion is found in the skin they deposit eggs, which speedily produce worms in great numbers. I have tried the effect of spirits of turpentine and several other remedies, but nothing seemed to have the desired effect but calomel blown into the wound, which destroyed the worms and soon effected a cure.

In the vicinity of the South Pass, upon the Humboldt River, and in some sections upon other routes to California, alkaline water is found, which is very poisonous to animals that drink it, and generates a disease known in California as "alkali." This disease first makes its appearance by swellings upon the abdomen and between the fore legs, and is attended with a cough, which ultimately destroys the lungs and kills the animal. If taken at an early stage, this disease is curable, and the following treatment is generally considered as the most efficacious. The animal is first raked, after which a large dose of grease is poured down its throat; acids are said to have the same effect, and give immediate relief. When neither of these remedies can be procured, many of the emigrants have been in the habit of mixing starch or flour in a bucket of water, and allowing the animal to drink it. It is supposed that this forms a coating over the mucous membrane, and thus defeats the action of the poison.

Animals should never be allowed to graze in the vicinity of alkaline water, as the deposits upon the grass after floods are equally deleterious with the water itself.

In seasons when the water is low in the Humboldt River, there is much less danger of the alkali, as the running water in the river then comes from pure mountain springs, and is confined to the channel; whereas, during high water, when the banks are overflowed, the salts are dissolved, making the water more impure.

For colic, a good remedy is a mixture of two table-spoonfuls of brandy and two tea-spoonfuls of laudanum dissolved in a bottle of water and poured down the animal's throat. Another remedy, which has been recommended to me by an experienced officer as producing speedy relief, is a table-spoonful of chloride of lime dissolved in a bottle of water, and administered as in the other case.

RATTLESNAKE BITES.

Upon the southern routes to California rattlesnakes are often met with, but it is seldom that any person is bitten by them; yet this is a possible contingency, and it can never be amiss to have an antidote at hand.

Hartshorn applied externally to the wound, and drunk in small quantities diluted with water whenever the patient becomes faint or exhausted from the effects of the poison, is one of the most common remedies.