a disease usually called cardialgia by physicians. In surfeits, or upon swallowing without due mastication; when meats are eaten tough and fat, or with farinaceous substances unfermented; or when by any accident the saliva is vitiated, too scanty, or not intimately mixed with the food, the fermentation becomes tumultuous, the stomach swells with air, and this extraordinary commotion being attended with an unusual heat, brings on the uneasiness called the heart-burn; which is remedied by whatever promotes a greater secretion of saliva, or helps to mix it with our aliment. The teflaceous powders, as oyster-shells, crabs-eyes, chalk, &c. are the usual remedies for the heart-burn.