EXCEPTION 3.--We come now to the consideration of those cases--for such it will not be doubted there are--where a hired nurse is to be preferred to feeding by the hand. Before proceeding farther, however, it is important to say, that if a nurse could always be procured whose health, and temper, and habits were good, who had no infant of her own, and who would do as well for the infant, in every respect, as his own mother, it would be preferable to have no feeding by the hand at all. But such nurses are very scarce. Their temper, or habits, or general health, will often be such as no genuine parent would desire, and such as they ought to be sorry to see engrafted, in any degree, on the child. For even admitting what is claimed by some, that the temper of the nurse does _not_ affect the properties of the milk, and thus injure the child both physically and morally, still much injury may and inevitably will result from the influence of her constant presence and example. Others have infants of their own, in which case either their own child or the adopted one will suffer; and in a majority of cases, it can scarcely be doubted _which_ it will be. And I doubt the morality of requiring a nurse, in these cases, to give up her own child wholly. If _one_ must be fed, why not our own, as well as that of another? The only cases, then, which seem to me to justify the employment of a nurse, are where she possesses at least the qualifications above mentioned; and as these are rare, not many nurses, of course, would on this principle be employed. But when employed, it is highly desirable that the following rules should be observed: 1: The nurse should suckle the child at both breasts; otherwise he is liable to acquire a degree of crookedness in his form. There is another evil which sometimes results from the too common neglect of this rule, which is, that it endangers the deterioration of the quality of the milk. 2. The milk which is thus substituted for that of the mother, should be as nearly as possible of the same age as the child who is to receive it. It should be remembered, however, that the milk is not so good after the twelfth or thirteenth month, nor _quite_ so good under the third. 3. When the parent or some trusty and confidential friend can, without the aid of interested spies and emissaries, have an eye to the general treatment, and especially to the moral management, it should be done; for even the best nurses may so differ in their principles, manners and habits from the parent, that the latter would deem it preferable to withdraw the child, and resort at once to feeding. SEC. 7. _From Teething to Weaning._ This period will, of course, be longer or shorter according as the teeth begin to appear earlier or later, and according to the time when it is thought proper to wean.