These stories, like that of Perseus and Andromeda, and the Roman legend that Hercules substituted images of straw for the living men hurled into the Tiber from the Sublician bridge, belong to a period when the belief in the efficacy of human sacrifice for propitiating river-deities had been considerably shaken. The abolition of sacrifices of living men at the tombs of deceased Mikados is part of the same movement in the direction of a greater regard for human life. The decay of the cult of rivers is also to be inferred from a statement in the _Nihongi_ (A.D. 642) that prayers to the River-Gods for rain were condemned by the Government as yielding no good result. Reading Buddhist Sutras was equally ineffectual, but prayers by the Mikado to the four quarters of Heaven in Chinese fashion were more successful. There is a superstition at the present day that the mouths and pools of rivers are haunted by monsters called _kappa_, which destroy human beings and domestic animals. =Rain-Gods=.--Two special Rain-Gods are mentioned in the _Nihongi_, namely, Kura o Kami (valley-august-god) and Taka-o-Kami (height-august-god). Both are often called simply O Kami, and are conceived of as having dragon shape. But praying for rain was by no means confined to them. The _Yengishiki_ gives a list of eighty-five shrines to which messengers were despatched by the Court to pray for rain. These included many river and water deities, such as the Yamaguchi (mountain-mouth) and Mi-kumari (water-distributor) Gods; but the Wind-God, the Rice-God, the Thunder-God, and many others were added. Even deified men like Temmangū; might be prayed to for rain. The following is a modern method of causing rain. A procession is formed, a Shinto priest carrying _gohei_ at its head. Next to him follows a conch-blower, and then some men carrying a dragon made of straw, bamboo, &c. Two flags inscribed to the Dragon-kings come after. Next follows a drum, then the people in disorderly rout, shouting, "The black clouds of the honourable peak: from the west the rain comes pouring." The ceremony ends by the straw dragon being plunged into a waterfall. Water from the sacred lake of Haruna is supposed to produce rain. It is carried to the required place by relays of couriers, for if it stopped on the way the rain would fall there instead. =Well-Gods=.--Sacred wells are known in Japan. They are called _mi-wi_ (august well) or _mana-wi_ (true well). There is one at Kitsuki, in Idzumo, called the _ama no manawi_ (heaven-true-well), whence sacred water is drawn. Wells or well-gods are widely worshipped, usually in association with such household deities as Ashiba no Kami (the site deity) and Kamado no Kami (the furnace deity). We hear of an Iku-wi no Kami (live-well-god) and a Fuku-wi no Kami (luck-well-god). Special wells were sunk for the water used in the _ohonihe_ ceremony, and worship paid to them.