(10) Is a MS. without any title; but judging from its contents, it seems to correspond with the ספר הצורות המיניות once quoted by the same Ibn Habib.
(11) מדבר קדמות, “The Desert of Kedemoth.” This is a commentary on the twenty-five propositions placed by Maimonides at the beginning of the tenth chapter of his מורה נבוכים.
(12) A Hebrew poem, having for its subject the thirteen articles as arranged by Maimonides.
The authorship of the following four compositions is also attributed to Yedaya:—
(1) A Divan, compiled by a member of the family of Bedaresi, that member being, according to Luzzatto, no other than our Yedaya.
(2) מעדני מלך, “The Pleasure of a King,” is a short treatise on the game of Chess, and has several times appeared in print.
(3) Wolf, in the Bibliotheca Rabbinica, I, p. 403, attributes to Yedaya the authorship of a commentary on another commentary, written by Abraham Ibn Ezra on the Book of Genesis, the former of which exists as a MS. in the Paris National Library.
(4) אגרת התשובה, “A Letter of Response,” This letter, which was published by Dr. Berliner in 1888, and copies of which are found in various MSS., is attributed to Yedaya by Bartolocci and de Rossi.
Enough has been said to show the industry, which was Yedaya's most striking characteristic. At a time when a man's mind is perturbed by external influences, involving not only his abilities but even his personal safety, it would seem that intellectual work would be impossible: it was, however, at such a time that the bulk of Yedaya's work was undertaken and executed.