HIPPOLYTUS, THE CANONS OF. This book stands at the head of a series of Church Orders, which contain instructions in regard to the choice and ordination of Christian ministers, regulations as to widows and virgins, conditions of reception of converts from heathenism, preparation for and administration of baptism, rules for the celebration of the eucharist, for fasting, daily prayers, charity suppers, memorial meals, first-fruits, &c. We shall give (1) a description of the book as we have it at present; (2) a brief statement of its relation to allied documents; (3) some remarks on the evidence for its date and authorship. 1. We possess the _Canons of Hippolytus_ only in an Arabic version, itself made from a Coptic version of the original Greek. Attention was called to the book by Wansleben and Ludolf towards the end of the 17th century, but it was only in 1870 that it was edited by Haneberg, who added a Latin translation, and so made it generally accessible. In 1891 H. Achelis reproduced this translation in a revised form, embodying it in a synopsis of allied documents. He suspected much interpolation and derangement of order, and consequently rearranged its contents with a free hand. In 1900 a German translation was made by H. Riedel, based on fresh MSS. These showed that the book, as hitherto edited, had been thrown into disorder by the displacement of two pages near the end; they also removed other difficulties upon which the theory of interpolation had been based. Further discoveries, to be spoken of presently, have added to our materials for the study of the book.