In Japan all ranks are under laws more or less strict, and from such the imperial family does not escape. The succession to the throne, at all times an object in Eastern countries for daring ambition to aim at, and a fruitful source of revolution and misery to the people, is regulated and guarded in Japan on a basis wide enough to secure a succession, and preserved by such safeguards as to put it out of the power of collaterals to hope for success from intriguing ambition. One of these safeguards is supposed to be in the Emperor’s being allowed to take twelve concubines over and above his lawful wife, the Empress. These are generally daughters of men of high rank about the court, and the son of any one of them, if there is no son by the Empress, may succeed. If there be a daughter, she marries one of the members of these four families, and he becomes Emperor. Jinko, the father of the late Emperor, succeeded in this way. His father, Kokaku, was a member of the royal Kunnin family, and married the only daughter of the Emperor, and so became Emperor. He had a concubine, the daughter of Koongay Kwadjooji. The wife and the concubine had each one son. Satchay no mia was the son of the wife, and heir-apparent to the throne. But the concubine was a fierce, jealous woman, and determined that her son should succeed, and she poisoned Satchay. It was the duty of the Shiogoon’s envoy, Sakkye, to inquire into the reports that were circulating; and having done so, he discovered the truth, and put the concubine into confinement. But, though the Emperor was much distressed, he loved her too well and insisted on her being released. The government at Yedo heard of what had happened, and required the envoy to give his reasons for releasing her, when she had committed so heinous a crime. He committed suicide. Her son, Jinko, it is said, always paid the Empress the greatest respect, and would never see his own mother afterward. But even with this wide matrimonial basis allowed to the Emperor, there may be a failure of heirs direct. These four families are therefore established as a further safeguard to the succession. They take their names from collateral branches of the imperial house, being originally the families of younger sons of previous Emperors. At present there are only two families of Sinwo, two having become extinct by failure of heirs. They are, however, only dormant, as it is a part of the policy of the state that these families should be in existence, and it is in the power of the Emperor to put one of his sons into, as it were, the extinct family--that is, to call him by the name and give him the revenues belonging to the house, which revenues have been accruing until the family is re-established.