In some children just born, the brain-pan may be observed to palpitate; and in all, the action of the sinuses, or arteries of the brain, may be felt at this place. Over this aperture is formed a kind of scurf, which is sometimes very thick, and must be rubbed with brushes in proportion as it begins to dry. This matter seems to have some analogy with that of the horns of some animals, which also derive their origin from an aperture of the skull, and from the substance of the brain. We shall hereafter take an opportunity to shew, that the extremities of the nerves become solid by being exposed to the air, and that it is this nervous substance produces claws, nails, horns, &c. The fluid contained in the amnios leaves a viscous, whitish matter upon the infant, which is sometimes so adhesive, that it must be diluted with some mild liquid before it can be removed. In this country we never wash the infant but in warm water; yet there are whole nations, who inhabit climates much more severe than ours, that plunge their children into cold water the minute they are born, without their suffering the least injury. The Laplanders are even said to leave their infants in snow, till by the cold their respiration is nearly stopped, and then plunge them into a bath of warm water. They are treated thus roughly thrice every day during the first year, and afterwards as often every week, do they undergo an immersion in cold water. The people of the North are persuaded that the practice of cold bathing renders men more healthy and robust; and it is for this reason they enure their progeny to it from their birth. The truth is, we are ignorant with the extent of what our body is capable of suffering, acquiring, or losing by the power of habit. The Indians in the isthmus of America, for example, receive no injury from plunging into cold water when in a sweat; and as the most speedy remedy for intoxication, the women throw their husbands into the river when they are drunk; the minute after delivery, mothers scruple not to bathe in cold water with their infants, and yet dangerous as we should consider this practice, these women are rarely known to die in child-bearing.