Note 125 — II. OUR DUTIES. (continued 3)

In the next period, that of the Geonim, we meet with the complete Siddur, “Arrangement” or “Order” of Service for ordinary days, for Sabbaths and Festivals, Benedictions for all occasions, and Piyyutim as optional additions. Such a Siddur was arranged by the Gaon Rabbenu Saadiah (892–942), and another by the Gaon Rabbenu Amram (about 880). Henceforth the principal prayers underwent only insignificant alterations. Of the next period the most important Siddurim are those included in the Mishneh-torah, at the end of the second book, and that contained in the Machzor Vitry.125