In July, August, and September, in the Northern states, the _gad-fly_ (_[OE]stus ovis_) attacks the nostrils of the sheep, and there deposites its eggs, which, on being hatched, immediately crawl up and make a lodgment in the head. They are frequently repelled by laying a thick coat of tar on the bottom of the troughs, and sprinkling it with salt. The smell of the tar adhering to the nose will drive off the fly. A more effectual remedy is to apply it thoroughly with a brush to the external part of the nose. If a few furrows of loose earth are turned up in their pastures, the sheep will hold their noses to them, and thus keep off the fly. The symptoms of grubs in the head, are drooping of the head and ears, discharge of bloody and watery matter from the nostrils, and loss of strength in the limbs. If worms have made a lodgment, take half a pound of good Scotch snuff, and two quarts boiling water: stir, and let it stand till cold. Inject about a tablespoonful of this liquid and sediment up each nostril, with a syringe. Repeat this three or four times at intervals, from the middle of October till January: the grubs are then small, and will not have injured the sheep. The efficacy of the snuff will be increased, by adding half an ounce assaf[oe]tida, pounded in a little water. The effect on the sheep is immediate prostration and apparent death, but they will soon recover. A decoction of tobacco will afford a substitute for snuff.--_N. Eng. Far._ Blacklock's remedy is, to half fill the bowl of a pipe with tobacco, light it, and then hold the sheep, while a person inserts the stem some distance into the nostril, and blows a few whiffs into the nose. The operation is then repeated with the other nostril. Swollen Mouth Is sometimes fatal. It is said to be cured by daubing the lips and mouth plentifully with tar.--_Albany Cultivator._ Foul Noses. Dip a small swab into tar, then roll in salt. Put some on the nose, and compel the sheep to swallow a small quantity.--_American Far._ A disease indicated by drooping, running at the eyes, weakness in the back and loins, inability to use the hind legs, was removed by turning the sheep into a pasture containing lobelia, (_Indian tobacco._) Dried lobelia was also given, and produced the same effect.--_Cultivator._ Scab. This loathsome disease, to which fine-woolled sheep are particularly liable, is caused, like itch in the human subject, by a small insect, a species of the _acari_. It is first manifest by the rubbing of the sheep, and soon after by one or more tufts of wool, which is loosened at the roots. On feeling the skin, a hard, dry tumor is perceptible. To prevent contagion, remove the infected sheep to a separate pasture or yard as soon as discovered. _Remedies._--The Spanish shepherds dissolve a little salt in their mouth, and drop it upon the infected part.