This implies, however, a careful attention on the part of the mother to her own health; for that of her child is essentially dependent upon it. Healthy, nourishing, and digestible milk can be procured only from a healthy parent; and it is against common sense to expect that, if a mother impairs her health and digestion by improper diet, neglect of exercise, and impure air, she can, nevertheless, provide as wholesome and uncontaminated a fluid for her child, as if she were diligently attentive to these important points. Every instance of indisposition in the nurse is liable to affect the infant. And this leads me to observe, that it is a common mistake to suppose that, because a woman is nursing, she ought therefore to live very fully, and to add an allowance of wine, porter, or other fermented liquor, to her usual diet. The only result of this plan is, to cause an unnatural degree of fulness in the system, which places the nurse on the brink of disease, and which of itself frequently puts a stop to the secretion of the milk, instead of increasing it. The right plan of proceeding is plain enough; only let attention be paid to the ordinary laws of health, and the mother, if she have a sound constitution, will make a better nurse than by any foolish deviation founded on ignorance and caprice. The following case proves the correctness of this statement:-- A young married lady, confined with her first child, left the lying-in- room at the expiration of the third week, a good nurse, and in perfect health. She had had some slight trouble with her nipples, but this was soon overcome. The porter system was now commenced, and from a pint to a pint and a half of this beverage was taken in the four and twenty hours. This was resorted to, not because there was any deficiency in the supply of milk, for it was ample, and the infant thriving upon it; but because, having become a nurse, she was told that it was usual and necessary, and that without it her milk and strength would ere long fail. After this plan had been followed for a few days, the mother became drowsy and disposed to sleep in the daytime; and headach, thirst, a hot skin, in fact, fever supervened; the milk diminished in quantity, and, for the first time, the stomach and bowels of the infant became disordered. The porter was ordered to be left off; remedial measures were prescribed; and all symptoms, both in parent and child, were after a while removed, and health restored. Having been accustomed, prior to becoming a mother, to take a glass or two of wine, and occasionally a tumbler of table beer, she was advised to follow precisely her former dietetic plan, but with the addition of half a pint of barley-milk morning and night. Both parent and child continued in excellent health during the remaining period of suckling, and the latter did not taste artificial food until the ninth month, the parent's milk being all-sufficient for its wants.