_In what manner does this influence of the maternal mind act?_--Through the blood of the mother. Only a very delicate membrane separates the vital fluid of the mother from that of the infant in her womb. There is a constant interchange of the blood in its body with that in hers through this exceedingly thin membrane; and thus all nervous impressions which have produced an alteration of either a temporary or permanent character in the circulating fluid of the mother, are communicated to the child. Since the mother, as has been shown, can transmit through her blood certain characteristics of mind and body not her own,--for instance, a disease peculiar to a male from her father to her son, or the physical and mental traits of her first husband to the children by her second,--it does not seem at all strange that she should through this same medium, her blood, impart other peculiarities which have made a strong impression upon her mind. Anatomy and physiology therefore fully explain and account for this seemingly mysterious influence. The view here stated, and indorsed by modern science, is one which ought to have great weight with the mother, her relatives and friends. The _practical conclusion_ which it suggests is, that as during pregnancy there is unusual susceptibility to mental impressions, and as these impressions may operate on the fragile structure of the unborn being, this tendency should be well considered and constantly remembered, not only by the woman herself, but by all those who associate or are thrown in contact with her. Upon the care displayed in the management of the corporeal and mental health of the mother during the whole period of pregnancy, the ultimate constitution of the offspring greatly depends. All the surroundings and employments of the pregnant woman should be such as conduce to cheerfulness and equanimity. Above all, she should avoid the presence of disagreeable and unsightly objects. Vivid and unpleasant impressions should be removed as soon as possible by quiet diversion of the mind. All causes of excitement should be carefully guarded against. In leaving the subject of maternal impressions, we will call attention to the manifest difference in extent and degree between the influence of the father and that of the mother over the offspring. That of the father ceases with impregnation. That of the mother continues during the whole term of pregnancy, and, as we shall shortly see, even during that of nursing. EDUCATION OF THE CHILD IN THE WOMB.