"Many women believe, or affect to believe, that the weakness they labor under arises from some latent moral or physical cause; but this weakness is not attributed to lactation in the earlier months of suckling, because the mother then considers herself fulfilling a necessary duty, which her constitution, for so long, is well able to bear. So soon, however, as the period of lactation has passed over, as it is established by custom or fashion, she imagines she is exceeding the intentions of nature, and she forthwith concludes that the continuance of suckling is the cause of her uncomfortable sensations. This whim being entertained, the child is weaned, and too often becomes the victim of a most reprehensible delusion. "Since nature has furnished the mother with milk for a longer period than custom demands, it is evident that some good purpose for the mother and child was intended in this arrangement. Had it been otherwise, the secretion of milk would stop at a definite time, in like manner as the period of gestation is definite. That a child, in comparison with the young of the lower animals, is so long unable to provide for itself, strongly tends to corroborate the proofs already advanced--that nature originally had in view a more protracted period for lactation than is now allowed. "Some writers, following the laws of nature, as they interpreted them, fixed the period of weaning at fifteen months, when the infant has got its eight incisors and four canine teeth. There are well-authenticated instances of mothers having suckled their children for three, four, five, and even seven consecutive years; we ourselves have known cases of lactation being prolonged far three and for four years, with the happiest results." It appears to me better, therefore, that the child should be nursed, in all ordinary cases, from twelve to fifteen months; and when there are no special objections, about two years. As the change, whenever it is made, and however gradual it may be, is an important one, in its effects on the stomach and bowels, it is better to wean a little earlier or a little later, than to do so just at the close of summer or beginning of autumn, at which season bowel complaints are most common, most severe, and most dangerous. It is sufficiently unfortunate that teething should commence just at this period; but when we add another cause of irregular action, which we can control, to one which we _cannot_, we act very unwisely. I have already observed that we may begin to feed children when the teeth begin to appear. By this is not meant that we should do so while the system is under the irritation to which teething usually, or at least often, subjects it. But when this is over, and a few teeth have appeared, it is usually a proper time to commence our operations.