The earliest existing codification of the prayerbook is the Siddur (order) drawn up by Amram Gaon of Sura about 850.
In the Church of England, however, it was retained among the episcopal ornaments prescribed by the first Prayerbook of Edward VI., and, though omitted in the second Prayerbook, its use seemed once more to be enjoined under the Ornaments Rubric of Elizabeth's Prayer-book.
He also published a Jewish prayerbook (Israelitisches Gebetbuch) and a variety of minor monographs on historical and literary subjects connected with the fortunes of his people.
To these fragments may be added the prayerbook of a certain Waclaw, a sermon on marriage, and some Polish glosses.
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