Nature deities seldom confine themselves to their proper nature functions. Shinto exhibits an increasing tendency to recognize in them a providence that influences human affairs. Even in the older Shinto there are examples of the Gods exercising a providential care for mankind outside of their proper spheres of action. The Sun-Goddess not only bestows light on the world, but preserves the seeds of grain for her beloved human beings. She watches specially over the welfare of her descendants the Mikados. Susa no wo, the Rain-storm personified, is the provider of all kinds of useful trees. Practically, all the deities are prayed to for a good harvest, or for rain. Even man-Gods, like Temmangu, may be appealed to for this purpose. Any God may send an earthquake or a pestilence. In 853 there was a great epidemic of smallpox. An oracle from Tsukiyomi, the Moon-God, indicated the means of obtaining relief from this plague, and since then people of every class pray to him when it is prevalent