The womb and the breasts are bound together by very strong sympathies: that which excites the one will stimulate the other. Dr. Charles Loudon mentions that four out of seven patients, by acting on this hint, became mothers. A similar idea occurred to the illustrious Marshall Hall, who advised the application of a strong infant to the breast. Fomentations of warm milk to the breasts and the corresponding portion of the spinal column, and the use of the breast-pump two or three times a day, just before the menstrual period, have also been recommended by good medical authorities. Horseback exercise, carried to fatigue, seems occasionally to have conduced to pregnancy. The greatest hope of success against sterility is to change the dominant state of the constitution. But this can only be effected under suitable medical advice. The treatment of sterility--thanks to the recent researches of Dr. Marion Sims--is much more certain than formerly; and the intelligent physician is now able to ascertain the cause, and point out the remedy, where before all was conjecture and experiment. The sterile wife should, herefore, be slow in abandoning all hope of ever becoming a mother. ON THE LIMITATION OF OFFSPRING. No part of our subject is more delicate than this. Very few people are willing to listen to a dispassionate discussion of the propriety or impropriety of limiting within certain bounds the number of children in a family. On the one side are many worthy physicians and pious clergymen, who, without listening to any arguments, condemn every effort to avoid large families; on the other, are numberless wives and husbands, who turn a deaf ear to the warnings of doctors and the thunders of divines, and, eager to escape a responsibility they have assumed, hesitate not to resort to the most dangerous and immoral means to accomplish this end. We ask both parties to lay aside prejudice and prepossession, and examine with us this most important social question in all its bearings. Let us first inquire whether there is such a thing as _over-production_--having _too many_ children. Unquestionably there is. Its disastrous effects on both mother and children are known to every intelligent physician. Two-thirds of all cases of womb disease, says Dr. Tilt, are traceable to child-bearing in feeble women. Hardly a day passes that a physician in large practice does not see instances of debility and disease resulting from over-much child-bearing. Even the lower animals illustrate this. Every farmer is aware of the necessity of limiting the offspring of his mares and cows. How much more severe are the injuries inflicted on the delicate organization of woman! A very great mortality, says Dr. Duncan of Edinburgh, attends upon confinements when they become too frequent.