There are few ancient texts in a condition so mutilated and unsatisfactory as that of Fronto. Not only was the Codex containing his letters used subsequently for recording the Latin translation of the Acts of the first Council of Chalcedon, and even in one case (Cod. Vat. 227) for two writings one over the other, but there are also indications that there was an earlier writing under the Fronto text, of which Studemund found traces in Cod.Ambr1. p. 107 and Hauler on p. 251 of the same. The latter detected the name Hadrian, and supposed that a work of that Emperor might have been transscribed there. However, the Ambrosian MS. has recently been thoroughly cleaned and laboriously examined by Dr. Hauler, whose authoritative edition of Fronto has long been expected. Meanwhile Naber's edition, faulty as it is, holds the field, and the references in the following notes will be to it. The numerals indicate page and line.