Each nurse should have a filing box or drawer in which to keep these charts; they should be arranged in alphabetical order, and kept at the central office, where the superintendent may have ready access to them. These charts are the property of the association, and under no circumstances are to be removed from the central office. The nurse may make her entries upon them either at the end of the day’s work, or before she goes on duty the next morning. =Closing the Chart.= Patients are removed from the visiting list when they die, or when they are discharged. They are discharged only for one of three reasons—either they leave the city, or they move and their address is lost, or they prove not to be tuberculous. When a patient dies or is discharged, a suitable entry is made on his chart, which is then turned in to the superintendent of nurses, or to whomever is responsible for the records. If there is only one nurse, it is of course her duty to file these closed histories. These records should be rich mines of sociological information, and should contain valuable material for those who have access to them, such as municipal authorities, physicians, and social workers. Except for the access allowed to these, the files should be confidential. =The Card Index.= All offices should contain a card index, giving the name and address of each patient under supervision. Change of address should always be noted, since it is only by means of this card index that the particular chart desired can be referred to. For example: the card index contains the names of some 3000 cases, all under supervision, and each one having its own chart. The charts themselves, however, are distributed among the filing boxes of several nurses. If particulars are wanted concerning John Doe, it would be necessary to turn first to the card index, find his address and the district in which he lives, and then turn to the filing box of that district and take out the chart. If it were not for the card index, it would be necessary to search through all the filing boxes before finding the desired chart. [Illustration: Card, three by five inches, used in Card Index] As the discharged charts are handed in, the corresponding card in the index is withdrawn and filed away in a drawer containing either the dead or the discharged cases according to circumstances. This is a very simple way of keeping records, and of balancing from day to day the number of patients on the visiting list. This balance may be made every week or every month, as desired, for it is a simple method and reduces to a minimum the opportunities for mistakes in addition and subtraction. Needless to say, no one but the superintendent or her secretary should have access to, or touch these files in any way.