Israel Friedlaender pointed out long ago that the work of Ibn Hazm,al-fisalfi 'l-nihal, was not a book but a collection of pamphlets ; not all these collections were identical. Asin Palacios published a Spanish translation of the printed text with many careful notes and Di Matteo discussed the criticisms of Jews and Christians by Ibn Hazm but neither knew the British Museum manuscript Or. 842 which differs from the print by omissions and additions. Some paragraphs on Muslim sects, absent from the print, were published in BSOAS, xn, 1, 1947, 1 ff. (This passage is in Or. 843 which is by the same hand as Or. 842.) Another addition (f. 2a) states that the Samaritan Pentateuch gives the years from the fall of Adam to the flood as 1307, the Hebrew which is accepted by both the Rabbanites and Karaites as 1650 (presumably the final 6 was lost by a scribal error), and the Greek as 2242. It adds that another sect of the Jews made the period 667 years and 8 months less 8 days. (A thousand has probably dropped out.)