Santas), a member of a respected Andalusian family, was as learned in the Talmud, and excelled him in the extent of his secular knowledge. Ibn-Abitur wrote in verse. Among other things he composed synagogue poetry for the Day of Atonement, but his verse is harsh, awkward, and altogether devoid of poetic charm. He had not profited by the poetry of Dunash. Joseph Ibn-Abitur understood the Arabic language so well that he was able to translate the Mishna into that language. The Caliph Alhakem had expressed a wish to possess a translation of the work containing the sources of Jewish tradition, and Ibn-Abitur gratified that wish to his satisfaction. The refined Caliph probably only desired to increase his library (which was of such proportions that the catalogue took up twenty-four volumes) by the addition of the Mishna, which was so highly valued by the Jews. The men most distinguished in philology and Hebrew poetry during the period after Chasdaï were the pupils of Menachem and Dunash. They carried on a controversy in epigrams, in prose and verse. Of these, Isaac Ibn-G'ikatilia was a poet, and Jehuda Ibn-Daud a Hebrew grammarian. The latter, whose Arabic name was Ibn-Zachariah Yachya Chayuj, descended from a family which came from Fez, was the first to place Hebrew philology on a firm basis, and may be regarded as the first scientific grammarian. Chayuj, too, was the first to recognize that Biblical Hebrew roots consist of three letters, and that several consonants (the liquids, semi-vowels, and the sounds produced by the same organ) become assimilated and change into vowels. He thereby made it possible to know the different forms and their changes, and to apply this knowledge to poetry. Chayuj thus brought about a complete reform in the Hebrew language, and illumined the darkness wherein his predecessors, amongst them Saadiah, Menachem, and Dunash, and to a greater extent the Karaites, had been lost. Chayuj wrote his grammatical works in Arabic; on this account they remained unknown to the Jews out of Spain, who retained the imperfect systems of Menachem and Dunash in their philological studies. Although the rabbinate of Cordova was merely an honorary office, and Chanoch derived no income from it, nevertheless it gave rise to contention after Chasdaï's death. The followers of Joseph Ibn-Abitur, amongst whom were the numerous Ibn-Abitur family, and the brothers Ibn-Jau, silk manufacturers, who were employed at court, endeavored to put their favorite at the head of affairs. The greater portion of the Jews of Cordova clung to Chanoch. The quarrel became too serious to be peaceably settled, and each party appealed to the Caliph on behalf of its favorite. Seven hundred influential men, partisans of Chanoch, betook themselves, in festive apparel, several days in succession to Az-Zahra, Alhakem's residence, not far from Cordova, in order to obtain the Caliph's favor for their rabbi.