It is a well-known fact that, sometime between the 4th and 7th centuries, a recension of the NT, or at least of the Pauline and Catholic epistles, into thought-lines was made. This recension is attributed variously to Euthalius, to Evagrius, even to Pamphilius. In spite of the fact that its authorship is unclear, this recension into thought-lines, along with certain other matter which is normally found with it, is traditionally called “Euthalian matter” or “Euthalian apparatus.” There are two important problems concerning Euthalian matter which are at present unsolved: (1) the date of Euthalius (or of the author of the recension, whom I shall henceforth call Euthalius for convenience sake); (2) which parts of the Euthalian matter are to be ascribed to the original author?