I consider it to be of great importance that the infant of the wet-nurse should be, as nearly as possible, of the same age as your own, as the milk varies in quality according to the age of the child. For instance, during the commencement of suckling, the milk is thick and creamy, similar to the biestings of a cow, which, if given to a babe of a few months old, would cause derangement of the stomach and bowels. After the first few days, the appearance of the milk changes; it becomes of a bluish-white colour, and contains less nourishment. The milk gradually becomes more and more nourishing as the infant becomes older and requires more support. In selecting a wet-nurse for a very small and feeble babe, you must carefully ascertain that the nipples of the wet-nurse are good and soft, and yet not very large. If they be very large, the child's mouth being very small, he may not be able to hold them. You must note, too, whether the milk flows readily from the nipple into the child's mouth; if it does not, he may not have strength to draw it, and he would soon die of starvation. The only way of ascertaining whether the infant really draws the milk from the nipple, can be done by examining the mouth of the child _immediately_ after his taking the breast, and seeing for yourself whether there be actually milk, or not, in his mouth. Very feeble new-born babes sometimes cannot take the bosom, be the nipples and the breasts ever so good, and although Maw's nipple-shield and glass tube had been tried. In such a case, cow's milk-water-sugar-and-salt, as recommended at page 29, must be given in small quantities at a time--from two to four tea-spoonfuls--but frequently; if the child be awake, every hour, or every half hour, both night and day, until he be able to take the breast. If, then, a puny, feeble babe is only able to take but little at a time, and that little by tea-spoonfuls, he must have little and often, in order that "many a little might make a mickle." I have known many puny, delicate children who had not strength to hold the nipple in their mouths, but who could take milk and water (as above recommended) by tea-spoonfuls only at a time, with steady perseverance, and giving it every half hour or hour (according to the quantity swallowed), at length be able to take the breast, and eventually become strong and hearty children; but such cases require unwearied watching, perseverance, and care. Bear in mind, then, that the smaller the quantity of the milk and water given at a time, the oftener must it be administered, as, of course, the babe must have a certain quantity of food to sustain life. 38. _What ought to be the diet either of a wet-nurse, or of a mother, who is suckling_?