Daniel Vaucher has produced a major comment on the post below on the conspectus of the church orders. I will respond by way of blog-posts on each individual aspect of his comment, as and when time allows.
Here is just one small one.
Vaucher states: Peter of Alexandria could be the author of a didascalia Petrou. Aren’t didascalia / diataxis the common names of church orders? Harnack (Chronologie der altchr. Litteratur, Vol 2, 1904, 73) mentions an unedited Didascalia Petrou in Cod. Vat. Gr. 2081, fol. 94v and asks whether it is Peter from Alexandria. He mentions a study by Crum, “Texts Attributed to Peter of Alexandria” JTS 4 (1903), 387-397, but I can’t find a note of the didascalia.
I reply: It is not often that one gets one over on Harnack so I shall enjoy this moment! Vaucher reports Harnack accurately, but the Didascalia of Peter of Alexandria had indeed been published from the Vatican MS, by J. M. Heer, “Ein neues Fragment der Didaskalie des Martyrbischofs Peter von Alexandrien,” Oriens Christianus 2 (1902), 344-51. Although Vaucher is right, Didascalia is indeed a common name for church order material, this is not a church order but a homiletic fragment.
This comment will keep me going for months!