=The prognosis= is not hopeful. Statistics show that almost all the affected animals die, and that those exceptional cases which survive remain puny and sickly. There is no economic advantage in attempting to save them. The mothers of affected calves seldom show any sign of illness, though the after-birth is often retained. =Lesions.= The macroscopic lesions are of very trifling importance compared with the gravity of the disease. The digestive tract appears congested throughout. The intestinal mucous membrane is moderately swollen, but without gross lesions. The intestinal contents exhale a sickly, fœtid odour. The smaller vessels and capillaries forming the peripheral vascular network appear distended, as in septicæmia. The carcases putrefy with extreme rapidity. Curative =treatment= is very uncertain. Varying results have been obtained with doses of 4 to 5 drams of slight purgatives like borotartrate of potassium, sodium sulphate, and magnesium sulphate; small doses of intestinal antiseptics like salicylic acid, 15–grain doses of salicylate of soda, 45 to 75 grains of carbolic acid, 2 per cent. carbolic solution in doses of 7 to 12 drams; 1 per cent. Lysol solution in doses of 2 to 4 ounces; benzo-naphthol, lactic acid 45 to 75 grains, tar water, lime water, etc. Although all these preparations, when carefully used, generally give good results in the early stages of simple diarrhœa, they appear to fail in dysentery of new-born calves. Prophylactic measures are more reliable. They consist: (1.) In scrupulous disinfection of the byres when the first case of abortion occurs; (2.) In successively isolating cows which are about to calve in a small specially detached stable; (3.) In carefully disinfecting the genital organs of cows which have aborted, firstly with boiled water at a temperature of 100° Fahr., and then with 1 per cent. iodine solution. Calves which are infected when born cannot be saved, but abortion can be prevented and dysentery so stamped out. DIARRHŒIC ENTERITIS IN CALVES. This disease is usually called “simple sporadic diarrhœa.” It may appear at any time before weaning, and can usually be cured if treated early before the patients show bodily wasting. =Causation.= Indigestion from failure of the abomasum to deal with the milk usually precedes diarrhœic enteritis; it may terminate without complications, but very often is followed by diarrhœa. Anything which produces milk indigestion, therefore, favours the occurrence of enteritis. Such predisposing influences include over-distension of the abomasum, milk of bad chemical composition, milk tainted by keeping or by storage in dirty and infected pails, etc. The addition to the milk of nutritive substances which the abomasum and intestine are not yet capable of digesting, such as wheat, rye, barley, or maize meals, very often produces diarrhœa even when the meal is well cooked.