Anyone who practices obstetrics in these days appreciates how careful he must be, especially of the cleanliness of his hands. Energetic scrubbing with soap and water and the free use of antiseptics, as physicians now employ both these measures, appear ridiculous to some women who have witnessed deliveries under a less stringent regime. They may be bold enough to express their disapproval. They may remind us that many women have been successfully delivered without such care. And in this they are correct; we know that nine of every ten mothers passed through childbirth uneventfully before modern precautions were dreamed of. Such precautions as are now taken, however, are necessary to secure the safety of the tenth patient. And it is because they are anxious that all their patients shall enjoy the greatest possible security that physicians dare not omit any precaution. Disinfection of the physician's hands does not entirely exclude the danger of infection through vaginal examinations. Although he may have been most conscientious, there is some risk of carrying contaminating material into the birth-canal from the region about the opening of the vagina. Unless that region has been satisfactorily disinfected, sterilizing the dressings and cleansing the hands may become a waste of time. Sensible patients, therefore, will never object to the preparations which the nurse is instructed to make. THE STAGE OF DILATATION.--For reasons which are sufficiently clear, the womb must remain closed while fetal development is in progress; but under normal conditions, when this development is complete, the mouth of the womb dilates and the infant is expelled. The infant never takes an active part in its birth, although physicians once thought it did and attributed tedious labors to stubbornness on its part. The error has been corrected in medical teaching, but many persons unacquainted with the facts cling to the idea that the infant forces its own way out of the womb.