Acids, more especially the mineral, have been very judiciously recommended by Dr. Dewees, and, when combined with any bitter infusion, will be found of great service. Where the constant secretion of acid is very distressing, the nitric acid will be found particularly useful; it allays the irritability of the stomach, and produces a healthy state of its secretion. Opiates are by no means desirable remedies, and rather tend to aggravate the disease by still farther injuring the tone of the stomach and producing constipation. We have known them given in considerable doses and in very powerful forms, but without relief. Hydrocyanic acid, creosote, &c., have also been tried, but with no permanent success; in such cases Dr. Burns has found the application of leeches useful, "especially if accompanied with pain or tension in the epigastric region." On the same principle, we presume, have we found a sinapism of great service. Where the vomiting, in spite of all the above modes of treatment, still goes on unabated, there is nothing which, in our experience, is so useful as covering the epigastrium with a hot flannel, upon which a mixture of camphorated spirits of wine and laudanum has been sprinkled. "We have," says Dr. Dewees, "in several instances, confined patients for days together, upon lemon juice and water with the most decided advantage. We have repeatedly found much benefit from the use of the spirit of turpentine three or four times a day, in doses of twenty drops: this medicine is very easily taken, if it be mixed in cold sweetened water. When the system is not excited to febrile action, and where the stomach rejects every thing almost as soon as swallowed, we have often known a table-spoonful of clove-tea act most promptly and successfully." (_Compendious System of Midwifery._) _Heartburn_ is another form of gastric derangement which frequently occurs to a very distressing degree, and must be looked upon as a modification of morning sickness; in many cases it arises from the presence of acid in the stomach, but in others it is merely a sympathetic result of gastric irritation, without any proof of acidity being present. The treatment of heartburn is much the same as that just described for morning sickness, the main object being to restore the stomach and bowels to a healthy condition. Besides the mineral acids, small quantities of iced water will be found very grateful, relieving the sense of burning in the back of the pharynx, and diminishing, in great measure, that gastric irritability of which it is a symptom.