Should, however, in spite of all precaution, the disease appear, steps should at once be taken to get rid of the food that is fermenting within the stomach by administering a teaspoonful of castor oil, and if any obviously large proportion of the oil be thrown up within half an hour of taking the oil, give another half teaspoonful. The milk given should be much more diluted than usual, and if it obviously continues to disagree, as evidenced by continued sickness after the bottle, it should be pancreated by means of Benger’s food, which will often be kept down where the simply sterilised milk is rejected. If, however, milk in any form prove unsuitable, meat juice may be substituted for a few hours. Meat juice is made by mincing raw lean meat, sprinkling lightly with salt, and adding just enough blood-warm water to cover it. Place the mixture aside in a covered jug in the sun for two hours and then place the pulpy mixture in a clean cloth and squeeze out the juice into a basin by wringing the cloth. Before administration, a sufficiency of sugar to make the mixture palatable should be added. Another very useful food, as a temporary substitute for milk, when the latter disagrees, is egg albumen. To prepare this, beat up the white of a small egg with enough cold water to make a bottle, add just enough sugar to perceptibly sweeten, and let it stand till the froth produced in the beating has settled. Should these novel delicacies be refused by the infant, the addition of even a teaspoonful of milk will often lend sufficient of the desired flavour to induce the child to take it. The egg albumen should always be given cold, as even warming the bottle by placing it in hot water might easily coagulate a little of the albumen and so convert an exceptionally bland food into a very dangerous and indigestible material. After the oil has acted, about 5 grains of Gregory’s powder may be given once or twice a day, and if the natural yellow of the child’s napkins be not rapidly recovered a grain of grey powder should be added. The course of infantile diarrhœa is often appallingly rapid, so that all may be over with the little sufferer in a few hours, and on this account there should be no delay in obtaining medical assistance, even on the appearance of slight symptoms of the kind, wherever such help is at hand. PLAGUE.