The health allowance is also a wise provision because the climate is such as often to necessitate calling in a physician, and doctors' bills are enormously high. If the missionary is not well he cannot work; but if he is left to pay for medical attendance himself out of a very meager salary, all of which is needed by his wife and children, he will frequently deny himself the services of a physician when they are really needed. The work of the missionary is most trying, and the demands on his health and strength are very exhausting. The petty worries and trials that constantly meet him, the rivalries and quarrels which his converts bring to him for settlement, the care of the churches, anxiety about his family, etc., are a constant strain on his vital force, in order to withstand which it is necessary that he should have regular periods of rest and recreation. Nature demands relaxation, and she must have it, or the health of the worker fails. It is customary in Japan for the missionaries to leave their fields of work during the summer season and spend six weeks or two months in {216} sanatoria among the mountains or by the seashore. Here their work, with its cares and anxieties, is all laid aside. The best-known sanatoria in Japan are Karuizawa, Arima, Hakone, Sapporo, and Mount Hiezan. In most of these places good accommodations are provided, and the hot weeks can be spent very pleasantly. Large numbers of missionaries gather there, and for a short time the tired, isolated worker can enjoy the society of his own kind; his wife can meet and chat with other housewives; and his children can enjoy the rare pleasure of playing with other children white like themselves. These resorts are cool, the air is pure and invigorating, and the missionary returns from them in September feeling fresh and strong, ready to take up with renewed vigor his arduous labors. It is objected to these vacations that they take the missionary away from his field of work, and that so long an absence on his part is very injurious to the cause. This is partially true; but a wise economy considers the health of the worker and his future efficiency more than the temporary needs of the work. The absence of the foreign worker for a short period is not as hurtful as one would at first glance suppose. A relatively larger part of the work is left in the hands of the native helpers in Japan than in most mission fields, and these evangelists stay at their posts {217} all through the summer, and care for its interests while the foreigner is away. The same need of a vacation does not exist in their case, because they are accustomed to the climate, and they work through their native tongue and among their own people.