The cow is somewhat off her feed--rumination ceases--she is listless and dull--the milk diminishes or dries up--the motions of the foetus become more feeble, and at length cease altogether--there is a slight degree of enlargement of the belly--there is a little staggering in her walk--when she is down she lies longer than usual, and when she gets up she stands for a longer time motionless. As the abortion approaches, a yellow or red glairy fluid runs from the vagina (this is a symptom, which rarely, or never, deceives) her breathing becomes laborious and slightly convulsive. The belly has for several days lost its natural rotundity, and has been evidently falling,--she begins to moan,--the pulse becomes small, wiry, and intermittent. At length labor comes on, and is often attended with much difficulty and danger. If the abortion has been caused by blows or violence, whether from brutality, or the animal's having been teased by other cows in season, or by oxen, the symptoms are more intense. The animal suddenly ceases to eat and to ruminate--is uneasy, paws the ground, rests her head on the manger while she is standing, and on her flank when she is lying down--hemorrhage frequently comes on from the uterus, or when this is not the case the mouth of that organ is spasmodically contracted. The throes come on, are distressingly violent, and continue until the womb is ruptured. If all these circumstances be not observed, still the labor is protracted and dangerous. Abortion is sometimes singularly frequent in particular districts, or on particular farms, appearing to assume an epizooetic or epidemic form. This has been accounted for in various ways. Some have imagined it to be contagious. It is, indeed, destructively propagated among the cows, but this is probably to be explained on a different principle from that of contagion. The cow is a considerably imaginative animal, and highly irritable during the period of pregnancy. In abortion, the foetus is often putrid before it is discharged; and the placenta, or after-birth, rarely or never follows it, but becomes decomposed, and, as it drops away in fragments, emits a peculiar and most noisome smell. This smell seems to be peculiarly annoying to the other cows: they sniff at it and then run bellowing about. Some sympathetic influence is exercised on their uterine organs, and in a few days a greater or less number of those that had pastured together likewise abort. Hence arises the rapidity with which the foetus is usually taken away and buried deeply, and far from the cows; and hence the more effectual preventive of smearing the parts of the cow with tar or stinking oils, in order to conceal or subdue the smell; and hence, too, the inefficacy, as a preventive, of removing her to a far-distant pasture.