TREATMENT.—Give fifteen drops of G.G., three times per day, or if urinary irritation is suspected use the H.H. instead. He should also have good food and plenty of regular exercise. If unable to give him exercise under saddle, he may be turned into a large pasture with pregnant mares. Weak or Deficient Sexual Vigor; Impotence in Stallions It not unfrequently happens that stallions of even good form and breed, and not deficient from inherited weakness or vice become uncertain or partially unfitted for foal-getting. This must of necessity arise late in life from failing vitality, or deficient natural strength. But it not unfrequently happens as a result of too early severe use, a drain put upon the young at a time when nature was still building up and hardening tissue, and when the over-drain made upon the green and yet unhardened sire, was more than the nutrition could repair. And it is again liable to happen from excessive use during the healthy, vigorous age of life, and the more so, if coupled with insufficient proper nourishment. Any or all of these causes may render a stallion uncertain, and so diminish his value and the relative value of his services. It becomes important to know what treatment will restore the feeble and uncertain, and will preserve and arrest the decay, as well as restore these waning powers. In order to restore and invigorate the deficient or waning powers, and to sustain them under severe tax, or upon the decline life, the J.K., may be given in confidence that it will sustain, restore and keep in vigor the natural virile powers. In cases, with only some decline in vigor, a dose of fifteen drops of J.K., given two or three times per week is sufficient. When the want of vigor is more decided, a dose, two or even three times per day may be given. Failure to come in Heat—Sterility Failure to breed in the mare may occur in two different forms—first impotence, in which the mare fails to come in heat, and second, true sterility, in which, although she came in heat and was bred the service proved unfruitful. The first of these cases may be due to some malformation of the sexual organs in which case it is incurable; but it is more often due to insufficient or over-feed, or lack of exercise, or over-work, or some depressing disease. TREATMENT.—Correct the exercise and feeding, and give G.G., every night for a week, or, if the case is urgent, a dose morning and night, and then a dose daily until the result is manifest. TRUE STERILITY may also be caused by malformations and be incurable, but is more often caused by other things such as a catarrhal condition of the vagina—Leucorrhea or too ardent heat, or insufficient food, or debility from disease.