It is possible for a child to inherit syphilis from the father--when the germs of syphilis are transmitted through the semen of the father at the time of conception--and yet the mother escape the disease. On the other hand, it is not uncommon for the child to become thus infected and infect its mother while in her womb; or the mother may receive syphilis from the husband after conception, and the child become infected in the womb. The chief social danger of syphilis comes from its introduction into marriage and its morbid radiations through family and social life. Probably one in every five cases of syphilis in women is communicated by the husband in the marriage relation. There are so many sources and modes of its contagion that it is spread from one person to another in the ordinary relations of family and social life--from husband to wife and child, from child to nurse, and to other members of the family, so that small epidemics of syphilis may be traced to its introduction into a family. Syphilis is the only disease which is transmitted in full virulence to the offspring, and its effect is simply murderous. As seen above, from sixty to eighty per cent of all children die before or soon after birth. One-third of those born alive die within the next six months, and those that finally survive are blighted in their development, both physical and mental, and affected with various organic defects and deformities which unfit them for the battle of life. Syphilis has come to be recognized as one of the most powerful factors in the depopulation and degeneration of the race. =INVOLUNTARY PASSAGE OF URINE--BED-WETTING IN CHILDREN.=--(_Incontinence of Urine_).--This refers to an escape of urine from the bladder uncontrolled by the will. It naturally occurs in infants under thirty months, or thereabouts, and in the very old, and in connection with various diseases. It may be due to disease of the brain, as in idiocy or insanity, apoplexy, or unconscious states. Injuries or disorders of the spinal cord, which controls the action of the bladder (subject to the brain), also cause incontinence. Local disorders of the urinary organs are more frequent causes of the trouble, as inflammation of any part of the urinary tract, diabetes, nephritis, stone in the bladder, tumors, and malformations. The involuntary passage of urine may arise from irritability of bladder--the most frequent cause--or from weakness of the muscles which restrain the escape of urine, or from obstruction to flow of urine from the bladder, with overflow when it becomes distended.