This disease is probably due to some impurity in the food, as musty hay or grain; it is not the same in the horse as in the human being, there being no sugar in the urine.

Symptoms. - The symptom most likely to attract attention is the frequent voiding, in large quantities, of pale, thin urine. If the animal stands in the stable the stall will be kept constantly wet. There will also be great thirst; and, although the appetite may be fair, the animal will be dull; the hair will be rough and the hide will be tight.

Treatment. - As the true cause is generally some derangement of the digestive organs, we should begin the treatment there. Mix together equal parts of gentian, bicarbonate of soda and powdered charcoal and give half a tablespoonful three times a day in some easily-digested, laxative food. To check the flow of urine give the following dose twice a day: Iodine crystals, forty grains; iodide of potassium, twenty grains; water, one pint; mix, and give as a drench. As this is best not taken into the stomach with the food, one dose should be given about the middle of the forenoon and the other in the middle of the afternoon, half way between the feeds of grain. Two or three days of this will generally be sufficient, but it may be necessary to continue longer. Give plenty of drinking water often and in small quantities.