The Boston Lying-In Hospital maintains a pregnancy clinic for the care of patients who are to be confined either in the hospital or in the outpatient department. At her first visit, every applicant is given a thorough physical and obstetrical examination, which is repeated as occasion demands. Each time that she comes to the clinic the urine is examined for albumin and the systolic blood pressure is determined by the mercury or aneroid sphygmomanometer and palpation of the radial pulse. She is instructed in the hygiene of pregnancy, and any necessary medical or other treatment is prescribed. Normal patients are directed to return every two weeks; those presenting complications at more frequent intervals. Every patient living in Boston or the adjacent cities of Cambridge, Somerville and Chelsea is seen in her home by a nurse between her visits to the clinic, and any abnormality found is reported to the physician