_General symptoms of urinary disorders._--These are not so prominent in cattle as in horses, yet they are of a similar kind. There is a stiff or straddling gait with the hind legs and some difficulty in turning or in lying down and rising, the act causing a groan. The frequent passage of urine in driblets, its continuous escape in drops, the sudden arrest of the flow when in full stream, the rhythmic contraction of the muscles under the anus without any flow resulting, the swelling of the sheath, the collection of hard, gritty masses on the hair surrounding the orifice of the sheath, the occurrence of dropsies in the limbs under the chest or belly, or in either of these cavities, and finally the appearance of nervous stupor, may indicate serious disorder of the urinary organs. The condition of the urine passed may likewise lead to suspicion. It may be white, from crystallized carbonate of lime; brown, red, or even black, from the presence of blood or blood-coloring matter; yellow, from biliary coloring matter; frothy, from contained albumin; cloudy, from phosphates; glairy, from pus; it may also show gritty masses from gravel. In many cases of urinary disorder in the ox, however, the symptoms are by no means prominent, and unless special examination is made of the loins, the bladder, and the urine the true nature of the malady may be overlooked. DIURESIS (POLYURIA, DIABETES INSIPIDUS, EXCESSIVE SECRETION OF URINE). A secretion of urine in excess of the normal amount may be looked on as disease, even if the result does not lead to immediate loss of condition. Cattle fed on distillery swill are striking examples of such excess caused by the enormous consumption of a liquid feed, which nourishes and fattens in spite of the diuresis; the condition is unwholesome, and cattle that have passed four or five months in a swill stable have fatty livers and kidneys, and never again do well on ordinary feed. Diuresis may further occur from increase of blood pressure in the kidneys (diseases of the heart or lungs which hinder the onward passage of the blood, the eating of digitalis, English broom, the contraction of the blood vessels on the surface of the body in cold weather, etc.); also from acrid or diuretic plants taken with the feed (dandelion, burdock, colchicum, digitalis, savin, resinous shoots, etc.); from excess of sugar in the feed (beets, turnips, ripe sorghum); also from the use of frozen feed (frosted turnip tops and other vegetables), and from the growths of certain molds in fodder (musty hay, mow-burnt hay, moldy oats, moldy bread, etc.). Finally, alkaline waters and alkaline incrustations on the soil may be active causes. In some of these cases the result is beneficial rather than injurious, as when cattle affected with gravel in the kidneys are entirely freed from this condition by a run at grass, or by an exclusive diet of roots or swill. In other cases, however, the health and condition suffer,