=Districts.= A small town, of course, constitutes but one district in itself. A larger town may be divided into two or three districts; a city, into as many as may be necessary. The principles upon which the work is conducted are the same in each case. The nurse is responsible for every consumptive in her district, and her constant endeavour should be to bring under supervision every case of tuberculosis that exists. She must visit all patients referred to her—give them instruction, prophylactic supplies, and nursing care; unearth suspicious cases and send them to a physician for diagnosis; secure hospital or sanatorium treatment for those who are eligible, and arrange all details connected with their admission. To accomplish these duties, she must know the physicians of her district, the dispensaries and institutions where she may send her patients, the philanthropic or relief-giving agencies whose aid is so often needed, and all social workers whose co-operation is necessary for the furtherance of the work in hand. =Hours on Duty.= Eight hours should constitute the working day, from eight or nine in the morning, till four or five in the afternoon. With a large staff, the day will probably not begin till 9 A.M., while a single nurse, in a small community, may prefer to begin earlier and so finish earlier, especially in summer. It is a mistake to work overtime, no matter how interested and enthusiastic one may be. A peculiarity of tuberculosis work is its unending character—there is always more to do than can be crowded into the longest day, and even after working ten, twelve, fourteen hours, one would always feel that some important thing was being left undone. It is well to recognize this fact in the beginning, although the temptation to make “just one more” visit is often hard to resist. The nurse who habitually works overtime only wears herself out the faster, and in the end her patients will suffer through her loss of health and energy. =Number of Daily Visits.= This is a variable factor, and depends in great measure upon the size of the district, as well as the number of patients it contains. The character of the service rendered also determines the number of visits, as new patients and bed-ridden patients always demand considerable time. If a nurse calls on ten patients in a block, and finds none of them in, she naturally can make more visits than when compelled to spend a long time in each house. As in everything else, it is the quality that counts, rather than the quantity; the day which shows few visits may have been spent more profitably than that on which she scored a high total. There is no general rule as to a nurse’s capacity, yet it is always well to suspect the value of a large total of daily visits; if a nurse dashes in and out of a house, spending but a few moments with her patients, she has probably done her work so superficially that nothing has been accomplished.