The thrush is a distemper that children are very subject to, and it arises from bad milk, or from foul humour in the stomach; for sometimes, though there be no ill humour in the milk itself, yet it may corrupt the child's stomach because of its weakness or some other indisposition; in which, acquiring an acrimony, instead of being well digested, there arise from it thrice biting vapours, which forming a thick viscosity, do thereby produce this distemper. _Cure_. It is often difficult, as physicians tell us, because it is seated in hot and moist places, where the putrefaction is easily augmented; and because the remedies applied cannot lodge there, being soon washed with spittle. But if it arises from too hot quality in the nurse's milk, care must be taken to temper and cool, prescribing her cool diet, bleeding and purging her also, if there be occasion. Take lentils, husked, powder them, and lay a little of them upon the child's gums. Or take bdellium flowers, half an ounce, and with oil of roses make a liniment. Also wash the child's mouth with barley and plantain-water, and honey of roses, mixing with them a little verjuice of lemons, as well to loosen and cleanse the vicious humours which cleave to the inside of the infant's mouth, as to cool those parts which are already over-heated. It may be done by means of a small fine rag, fastened to the end of a little stick, and dipped therein, wherewith the ulcers may be gently rubbed, being careful not to put the child in too much pain, lest an inflammation make the distemper worse. The child's body must also be kept open, that the humours being carried to the lower parts, the vapours may not ascend, as is usual for them to do when the body is costive, and the excrements too long retained. If the ulcers appear malignant, let such remedies be used as do their work speedily, that the evil qualities that cause them, being thereby instantly corrected, their malignity may be prevented; and in this case, touch the ulcers with plantain water, sharpened with spirits of vitriol; for the remedy must be made sharp, according to the malignity of the distemper. It will be necessary to purge these ill humours out of the whole habit of the child, by giving half an ounce of succory and rhubarb. SECT. V.--_Of Pains in the Ears, Inflammation, Moisture, etc._ The brain in infants is very moist, and hath many excrements which nature cannot send out at the proper passages; they get often to the ears, and there cause pains, flux of blood, with inflammation and matter with pain; this in children is hard to be known as they have no other way to make it known but by constant crying; you will perceive them ready to feel their ears themselves, but will not let others touch them, if they can prevent; and sometimes you may discern the parts about the ears to be very red.