The histories of Japan, prepared under the sanction of the present Japanese government, date the commencement of the historic period from the first year of the reign of the first emperor, Jimmu-Tenno, who is said to have ruled for seventy-six years, viz., from B.C. 660 to 585. Some persons consider that this reign, and a few reigns that succeeded it, probably or possibly belong to the legendary period, because while, on the one hand, the Emperor Jimmu is described as the founder of the present empire and the ancestor of the present emperor, on the other, he is described as the fourth son of Ukay Fukiaezu no Mikoto, who was fifth in direct descent from the beautiful sun-goddess, Tensho-Daijin. But as no such thing as writing existed in Japan in those days, or for many centuries afterward, it would not be surprising if a real monarch should have a mythical origin assigned to him; and as I have quite lately heard the guns firing at Nagasaki an imperial salute in honor of his coronation, and have seen the flags waving over the capital city, Tokio, in honor of the birthday, the Emperor Jimmu is quite historical enough for my present purpose. The commencement of his reign shall fix for us, as it does for others, the Japanese year 1, which was 660 years prior to our year 1, so that any date of the Christian era can be converted into one of the Japanese era by the addition of 660 years, and _vice-versa._ Some of the emperors will be found to have lived very long lives, no doubt; but as I have said elsewhere, none of them lived nearly so long as our Adam, Methuselah, and others, in whose longevity so many of us profess to believe; and besides, it is impossible for me to attempt to correct a chronology which Japanese scholars, and Englishmen versed in the Japanese language, have thus far left without specific correction. Deferring for after consideration the incidents of the successive imperial reigns, except in so far as they bear directly upon the descent of the crown, let us, then, first glance at the succession of emperors and empresses who have ruled in the Morning Land.