Hiyeda no Are's memory cannot be expected to compete in fullness and accuracy with the abundant documentary literature accessible to the writers of the Chronicles, and an examination of the two works shows that, in respect to the record of actual events, the Chronicles are far the more useful authority".* *Aston's Nihongi. It will readily be supposed, too, that the authors of both works confused the present with the past, and, in describing the manners and customs of by-gone eras, unconsciously limned their pictures with colours taken from the palette of their own times, "when the national thought and institutions had become deeply modified by Chinese influences." Valuable as the two books are, therefore, they cannot be accepted without large limitations. The Nihon Shoki occupied a high place in national esteem from the outset. In the year following its compilation, the Empress Gensho summoned eminent scholars to the Court and caused them to deliver lectures on the contents of the book, a custom which was followed regularly by subsequent sovereigns and still finds a place among the New Year ceremonials. This book proved to be the precursor of five others with which it is commonly associated by Japanese scholars. They are the Zoku Nihongi (Supplementary Chronicles of Japan), in forty volumes, which covers the period from 697 to 791 and was finished in 798; the Nihon Koki (Later Chronicles of Japan), in forty volumes--ten only survive--which covers the period from 792 to 833; the Zoku Nihon Koki (Supplementary Later Chronicles), in twenty volumes, which covers the single reign of the Emperor Nimmyo (834-850) and was compiled in 869; the Montoku Jitsu-roku (True Annals of Montoku), in ten volumes, covering the reign of Montoku (851-858), and compiled in 879, and the Sandai Jitsu-roku (True Annals of Three Reigns) in fifty volumes, covering the period from 859 to 887 and compiled in 901. These five compilations together with the Nihon Shoki are honoured as the Six National Histories. It is noticeable that the writers were men of the highest rank, from prime ministers downwards. In such honour was the historiographer's art held in Japan in the eighth and ninth centuries. CHRONOLOGY