Philip Schaff (ed.) · 13 of 672

Catalogue of his Works. · Part 1

§2. Catalogue of his Works.

There is no absolutely complete edition of Eusebius’ extant works. The only one which can lay claim even to relative completeness is that of Migne: Eusebii Pamphili, Cæsareæ Palestinæ Episcopi, Opera omnia quæ extant, curis variorum, nempe: Henrici Valesii, Francisci Vigeri, Bernardi Montfauconii, Card. Angelo Maii edita; collegit et denuo recognovit J. P. Migne. Par. 1857. 6 vols. (tom. XIX.–XXIV. of Migne’s Patrologia Græca). This edition omits the works which are extant only in Syriac versions, also the Topica, and some brief but important Greek fragments (among them the epistles to Alexander and Euphration). The edition, however, is invaluable and cannot be dispensed with. References to it (under the simple title Opera) will be given below in connection with those works which it contains. Many of Eusebius’ writings, especially the historical, have been published separately. Such editions will be mentioned in their proper place in the Catalogue.

More or less incomplete lists of our author’s writings are given by Jerome (De vir. ill. 87); by Nicephorus Callistus (H. E. VI. 37); by Ebedjesu (in Assemani’s Bibl. Orient. III. p. 18 sq.); by Photius (Bibl. 9–13, 27, 39, 127); and by Suidas (who simply copies the Greek version of Jerome). Among modern works all the lives of Eusebius referred to in the previous chapter give more or less extended catalogues of his writings. In addition to the works mentioned there, valuable lists are also found in Lardner’s Credibility, Part II chap. 72, and especially in Fabricius’ Bibl. Græca (ed. 1714), vol. VI. p. 30 sq.

The writings of Eusebius that are known to us, extant and non-extant, may be classified for convenience’ sake under the following heads: I. Historical. II. Apologetic. III. Polemic. IV. Dogmatic. V. Critical and Exegetical. VI. Biblical Dictionaries. VII. Orations. VIII. Epistles. IX. Spurious or doubtful works. The classification is necessarily somewhat artificial, and claims to be neither exhaustive nor exclusive.

I. Historical Works.

Life of Pamphilus (ἡ τοῦ Παμφίλου βίου ἀναγραφή; see H. E. VI. 32). Eusebius himself refers to this work in four passages (H. E. VI. 32, VII. 32, VIII. 13, and Mart. Pal. c. 11). In the last he informs us that it consisted of three books. The work is mentioned also more than once by Jerome (De vir. ill. 81; Ep. ad Marcellam, Migne’s ed. Ep. 34; Contra Ruf. I. 9), who speaks of it in terms of praise, and in the last passage gives a brief extract from the third book, which is, so far as known, the only extant fragment of the work. The date of its composition can be fixed within comparatively narrow limits. It must of course have been written before the shorter recension of the Martyrs of Palestine, which contains a reference to it (on its relation to the longer recension, which does not mention it, see below, p. 30), and also before the History, (i.e. as early as 313 a.d. (?), see below, p. 45). On the other hand, it was written after Pamphilus’ death (see H. E. VII. 32, 25), which occurred in 310.

Martyrs of Palestine (περὶ τῶν ἐν Παλαιστίνῃ μαρτυρησ€ντων). This work is extant in two recensions, a longer and a shorter. The longer has been preserved entire only in a Syriac version, which was published, with English translation and notes, by Cureton in 1861. A fragment of the original Greek of this work as preserved by Simon Metaphrastes had previously been published by Papebroch in the Acta Sanctorum (June, tom. I. p. 64; reprinted by Fabricius, Hippolytus, II. p. 217), but had been erroneously regarded as an extract from Eusebius’ Life of Pamphilus. Cureton’s publication of the Syriac version of the Martyrs of Palestine showed that it was a part of the original of that work. There are extant also, in Latin, the Acts of St. Procopius, which were published by Valesius (in his edition of Eusebius’ Hist. Eccles. in a note on the first chapter of the Mart. Pal.; reprinted by Cureton, Mart. Pal. p. 50 sq.). Moreover, according to Cureton, Assemani’s Acta SS. Martyrum Orient. et Occidentalium, part II. p. 169 sq. (Romæ, 1748) contains another Syriac version of considerable portions of this same work. The Syriac version published by Cureton was made within less than a century after the composition of the original work (the manuscript of it dates from 411 a.d.; see Cureton, ib., preface, p. i.), perhaps within a few years after it, and there is every reason to suppose that it represents that original with considerable exactness. That Eusebius himself was the author of the original cannot be doubted. In addition to this longer recension there is extant in Greek a shorter form of the same work which is found attached to the Ecclesiastical History in most mss. of the latter. In some of them it is placed between the eighth and ninth books, in others at the close of the tenth book, while one ms. inserts it in the middle of VIII. 13. In some of the most important mss. it is wanting entirely, as likewise in the translation of Rufinus, and, according to Lightfoot, in the Syriac version of the History. Most editions of Eusebius’ History print it at the close of the eighth book. Migne gives it separately in Opera, II. 1457 sq. In the present volume the translation of it is given as an appendix to the eighth book, on p. 342 sq.

There can be no doubt that the shorter form is younger than the longer. The mention of the Life of Pamphilus which is contained in the shorter, but is not found in the corresponding passage of the longer form would seem to indicate that the former was a remodeling of the latter rather than the latter of the former (see below, p. 30). Moreover, as Cureton and Lightfoot both point out, the difference between the two works both in substance and in method is such as to make it clear that the shorter form is a revised abridgment of the longer. That Eusebius himself was the author of the shorter as well as of the longer form is shown by the fact that not only in the passages common to both recensions, but also in those peculiar to the shorter one, the author speaks in the same person and as an eye-witness of many of the events which he records. And still further, in Chap. 11 he speaks of having himself written the Life of Pamphilus in three books, a notice which is wanting in the longer form and therefore must emanate from the hand of the author of the shorter. It is interesting to inquire after Eusebius’ motive in publishing an abridged edition of this work. Cureton supposes that he condensed it simply for the purpose of inserting it in the second edition of his History. Lightfoot, on the other hand, suggests that it may have formed “part of a larger work, in which the sufferings of the martyrs were set off against the deaths of the persecutors,” and he is inclined to see in the brief appendix to the eighth book of the History (translated below on p. 340) “a fragment of the second part of the treatise of which the Martyrs of Palestine in the shorter recension formed the first.” The suggestion is, to say the least, very plausible. If it be true, the attachment of the shorter form of the Martyrs of Palestine to the Ecclesiastical History was probably the work, not of Eusebius himself, but of some copyist or copyists, and the disagreement among the various mss. as to its position in the History is more easily explained on this supposition than on Cureton’s theory that it was attached to a later edition of the latter work by Eusebius himself.

The date at which the Martyrs of Palestine was composed cannot be determined with certainty. It was at any rate not published until after the first nine books of the Ecclesiastical History (i.e. not before 313, see below, p. 45), for it is referred to as a projected work in H. E. VIII. 13. 7. On the other hand, the accounts contained in the longer recension bear many marks of having been composed on the spot, while the impressions left by the martyrdoms witnessed by the author were still fresh upon him. Moreover, it is noticeable that in connection with the account of Pamphilus’ martyrdom, given in the shorter recension, reference is made to the Life of Pamphilus as a book already published, while in the corresponding account in the longer recension no such book is referred to. This would seem to indicate that the Life of Pamphilus was written after the longer, but before the shorter recension of the Martyrs. But on the other hand the Life was written before the Ecclesiastical History (see above, p. 29), and consequently before the publication of either recension of the Martyrs. May it not be that the accounts of the various martyrdoms were written, at least some of them, during the persecution, but that they were not arranged, completed, and published until 313, or later? If this be admitted we may suppose that the account of Pamphilus’ martyrdom was written soon after his death and before the Life was begun. When it was later embodied with the other accounts in the one work On the Martyrs of Palestine it may have been left just as it was, and it may not have occurred to the author to insert a reference to the Life of Pamphilus which had meanwhile been published. But when he came to abridge and in part rewrite for a new edition the accounts of the various martyrdoms contained in the work On Martyrs he would quite naturally refer the reader to the Life for fuller particulars.

If we then suppose that the greater part of the longer recension of the Martyrs was already complete before the end of the persecution, it is natural to conclude that the whole work was published at an early date, probably as soon as possible after the first edition of the History. How much later the abridgment was made we cannot tell.

The differences between the two recensions lie chiefly in the greater fullness of detail on the part of the longer one. The arrangement and general mode of treatment is the same in both. They contain accounts of the Martyrs that suffered in Palestine during the years 303–310, most of whom Eusebius himself saw.

Collection of Ancient Martyrdoms (ἀρχαίων μαρτυρίων συναγωγή). This work is mentioned by Eusebius in his H. E. IV. 15, V. præf., 4, 21. These notices indicate that it was not an original composition, but simply a compilation; a collection of extant accounts of martyrdoms which had taken place before Eusebius’ day. The work is no longer extant, but the accounts of the martyrdom of Pamphilus and others at Smyrna, of the persecution in Lyons and Vienne, and of the defense of Apollonius in Rome, which Eusebius inserts in his Ecclesiastical History (IV. 15, V. 1, V. 21), are taken, as he informs us, from this collection. As to the time of compilation, we can say only that it antedates the composition of the earlier books of the History (on whose date, see below, p. 45).

Chronicle (χρονικοὶ κανόνες). Eusebius refers to this work in his Church History (I. 1), in his Præparatio Evang. X. 9, and at the beginning of his Eclogæ propheticæ. It is divided into two books, the first of which consists of an epitome of universal history drawn from various sources, the second of chronological tables, which “exhibit in parallel columns the succession of the rulers of different nations in such a way that the reader can see at a glance with whom any given monarch was contemporary.” The tables “are accompanied by notes, marking the years of some of the more remarkable historical events, these notes also constituting an epitome of history.” Eusebius was not the first Christian writer to compose a work on universal chronology. Julius Africanus had published a similar work early in the third century, and from that Eusebius drew his model and a large part of the material for his own work. At the same time his Chronicle is more than a simple revision of Africanus’ work, and contains the result of much independent investigation on his own part. The work of Africanus is no longer extant, and that of Eusebius was likewise lost for a great many centuries, being superseded by a revised Latin edition, issued by Jerome. Jerome’s edition, which comprises only the second book of Eusebius’ Chronicle, is a translation of the original work, enlarged by notices taken from various writers concerning human history, and containing a continuation of the chronology down to his own time. This, together with numerous Greek fragments preserved by various ancient writers, constituted our only source for a knowledge of the original work, until late in the last century an Armenian translation of the whole work was discovered and published in two volumes by J. B. Aucher: Venice, 1818. The Armenian translation contains a great many errors and not a few lacunæ, but it is our most valuable source for a knowledge of the original work.

The aim of the Chronicle was, above all, apologetic, the author wishing to prove by means of it that the Jewish religion, of which the Christian was the legitimate continuation, was older than the oldest of cults, and thus deprive pagan opponents of their taunt of novelty, so commonly hurled against Christianity. As early as the second century, the Christian apologists had emphasized the antiquity of Judaism; but Julius Africanus was the first to devote to the matter scientific study, and it was with the same idea that Eusebius followed in his footsteps. The Chronology, in spite of its errors, is invaluable for the light it throws on many otherwise dark periods of history, and for the numerous extracts it contains from works no longer extant.

There are good and sufficient reasons (as is pointed out by Salmon in his article in Smith and Wace’s Dictionary of Christian Biography) for supposing that two editions of the Chronicle were published by Eusebius. But two of these reasons need be stated here: first, the chronology of the Armenian version differs from that of Jerome’s edition in many important particulars, divergencies which can be satisfactorily accounted for only on the supposition of a difference in the sources from which they respectively drew; secondly, Jerome states directly that the work was brought down to the vicennalia of Constantine,—that is, to the year 325,—but the Chronicle is referred to as an already published work in the Eclogæ propheticæ (I. 1), and in the Præparatio Evang. (X. 9), both of which were written before 313. We may conclude, then, that a first edition of the work was published during, or more probably before, the great persecution, and that a second and revised edition was issued probably in 325, or soon thereafter.

For further particulars in regard to the Chronicle see especially the article of Salmon already referred to. The work has been issued separately a great many times. We may refer here to the edition of Scaliger, which was published in 1606 (2d ed. 1658), in which he attempted to restore the Greek text from the fragments of Syncellus and other ancient writers, and to the new edition of Mai, which was printed in 1833 in his Scriptorum veterum nova collectio, Tom. VIII., and reprinted by Migne, Eusebii Opera, I. 99–598. The best and most recent edition, however, and the one which supersedes all earlier editions, is that of Alfred Schoene, in two volumes: Berlin, 1875 and 1866.

Ecclesiastical History (ἐκκλησιαστικὴ ἱστορία). For a discussion of this work see below, p. 45 sq.

Life of Constantine (εἰς τὸν βίον τοῦ μακαρίου Κωνσταντίνου τοῦ βασιλέως). For particulars in regard to this work, see the prolegomena of Dr. Richardson, on pp. 466–469 sq., of this volume.

II. Apologetic Works.

Against Hierocles (πρὸς τοὺς ὑπὲρ ᾽Απολλωνίου τοῦ τυανέως ῾Ιεροκλέους λόγους, as Photius calls it in his Bibl. 39). Hierocles was governor of Bithynia during the early years of the Diocletian persecution, and afterwards governor of Egypt. In both places he treated the Christians with great severity, carrying out the edicts of the emperors to the fullest extent, and even making use of the most terrible and loathsome forms of persecution (see Lactantius, De Mort. Pers. 16, and Eusebius, Mart. Pal. 5, Cureton’s ed. p. 18). He was at the same time a Neo-Platonic philosopher, exceedingly well versed in the Scriptures and doctrines of the Christians. In a work against the Christians entitled λόγος φιλαλήθης πρὸς τοὺς χριστιανούς, he brought forward many scriptural difficulties and alleged contradictions, and also instituted a comparison between Christ and Apollonius of Tyana, with the intention of disparaging the former. Eusebius feels called upon to answer the work, but confines himself entirely to that part of it which concerned Christ and Apollonius, leaving to some future time a refutation of the remainder of the work, which indeed, he says, as a mere reproduction of the arguments of Celsus, had been already virtually answered by Origen (see chap. 1). Eusebius admits that Apollonius was a good man, but refuses to concede that he was anything more, or that he can be compared with Christ. He endeavors to show that the account of Apollonius given by Philostratus is full of contradictions and does not rest upon trustworthy evidence. The tone of the book is mild, and the arguments in the main sound and well presented. It is impossible to fix the date of the work with any degree of certainty. Valesius assigns it to the later years of the persecution, when Eusebius visited Egypt; Stein says that it may have been written about 312 or 313, or even earlier; while Lightfoot simply remarks, “it was probably one of the earliest works of Eusebius.” There is no ground for putting it at one time rather than another except the intrinsic probability that it was written soon after the work to which it was intended to be a reply. In fact, had a number of years elapsed after the publication of Hierocles’ attack, Eusebius would doubtless, if writing against it at all, have given a fuller and more complete refutation of it, such as he suggests in the first chapter that he may yet give. The work of Hierocles, meanwhile, must have been written at any rate some time before the end of the persecution, for it is mentioned in Lactantius’ Div. Inst. V. 2.

Eusebius’ work has been published by Gaisford: Eusebii Pamph. contra Hieroclem et Marcellum libri, Oxon. 1852; and also in various editions of the works of Philostratus. Migne, Opera IV. 795 sq., reprints it from Olearius’ edition of Philostratus’ works (Lips. 1709).

Against Porphyry (κατὰ Πορφυρίον). Porphyry, the celebrated Neo-Platonic philosopher, regarded by the early Fathers as the bitterest and most dangerous enemy of the Church, wrote toward the end of the third century a work against Christianity in fifteen books, which was looked upon as the most powerful attack that had ever been made, and which called forth refutations from some of the greatest Fathers of the age: from Methodius of Tyre, Eusebius of Cæsarea, and Apollinaris of Laodicea; and even as late as the end of the fourth or beginning of the fifth century the historian Philostorgius thought it necessary to write another reply to it (see his H. E. X. 10). Porphyry’s work is no longer extant, but the fragments of it which remain show us that it was both learned and skillful. He made much of the alleged contradictions in the Gospel records, and suggested difficulties which are still favorite weapons in the hands of skeptics. Like the work of Porphyry, and all the other refutations of it, the Apology of Eusebius has entirely perished. It is mentioned by Jerome (de vir. ill. 81 and Ep. ad Magnum, §3, Migne’s ed. Ep. 70), by Socrates (H. E. III. 23), and by Philostorgius (H. E. VIII. 14). There is some dispute as to the number of books it contained. In his Ep. ad Magn. Jerome says that “Eusebius et Apollinaris viginti quinque, et triginta volumina condiderunt,” which implies that it was composed of twenty-five books; while in his de ver. ill. 81, he speaks of thirty books, of which he had seen only twenty. Vallarsi says, however, that all his mss. agree in reading “twenty-five” instead of “thirty” in the latter passage, so that it would seem that the vulgar text is incorrect.

It is impossible to form an accurate notion of the nature and quality of Eusebius’ refutation. Socrates speaks of it in terms of moderate praise (“which [i.e. the work of Porphyry] has been ably answered by Eusebius”), and Jerome does the same in his Ep. ad Magnum (“Alteri [i.e. Porphyry] Methodius, Eusebius, et Apollinaris fortissime responderunt”). At the same time the fact that Apollinaris and others still thought it necessary to write against Porphyry would seem to show that Eusebius’ refutation was not entirely satisfactory. In truth, Jerome (Ep. ad Pammachium et Oceanum, §2, Migne’s ed. Ep. 84) appears to rank the work of Apollinaris above that of Eusebius, and Philostorgius expressly states that the former far surpassed the latter (ἐπὶ πολὺ κρατεῖν ἠγωνισμένων ᾽Ευσεβί& 251· κατ᾽ αὐτοῦ). The date of Eusebius’ work cannot be determined. The fact that he never refers to it, although he mentions the work of Porphyry a number of times, has been urged by Valesius and others as proof that he did not write it until after 325 a.d.; but it is quite possible to explain his silence, as Lardner does, by supposing that his work was written in his earlier years, and that afterward he felt its inferiority and did not care to mention it. It seems, in fact, not unlikely that he wrote it as early, or even earlier than his work against Hierocles, at any rate before his attention was occupied with the Arian controversy and questions connected with it.

On the Numerous Progeny of the Ancients (περὶ τῆς τῶν παλαιῶν ἀνδρῶν πολυπαιδίας). This work is mentioned by Eusebius in his Præp. Evang. VII. 8. 20 (Migne, Opera, III. 525), but by no one else, unless it be the book to which Basil refers in his De Spir. Sancto, 29, as Difficulties respecting the Polygamy of the Ancients. The work is no longer extant, but we can gather from the connection in which it is mentioned in the Præparatio, that it aimed at accounting for the polygamy of the Patriarchs and it with the ascetic ideal of the Christian life which prevailed in the Church of Eusebius’ lifetime. It would therefore seem to have been written with an apologetic purpose.

Præparatio Evangelica (προπαρασκευὴ εὐαγγελική) and Demonstratio Evangelica (᾽Ευαγγελικὴ ἀπόδειξις). These two treatises together constitute Eusebius’ greatest apologetic work. The former is directed against heathen, and aims to show that the Christians are in accepting the sacred books of the Hebrews and in rejecting the religion and philosophy of the Greeks. The latter endeavors to prove from the sacred books of the Hebrews themselves that the Christians do right in going beyond the Jews, in accepting Jesus as their Messiah, and in adopting another mode of life. The former is therefore in a way a preparation for the latter, and the two together constitute a defense of Christianity against all the world, Jews as well as heathen. In grandeur of conception, in comprehensiveness of treatment, and in breadth of learning, this apology undoubtedly surpasses all other apologetic works of antiquity. Lightfoot justly says, “This great apologetic work exhibits the same merits and defects which we find elsewhere in Eusebius. There is the same greatness of conception marred by the same inadequacy of execution, the same profusion of learning combined with the same inability to control his materials, which we have seen in his History. The divisions are not kept distinct; the topics start up unexpectedly and out of season. But with all its faults this is probably the most important apologetic work of the early Church. It necessarily lacks the historical interest of the apologetic writings of the second century; it falls far short of the thoughtfulness and penetration which give a permanent value to Origen’s treatise against Celsus as a defense of the faith; it lags behind the Latin apologists in rhetorical vigor and expression. But the forcible and true conceptions which it exhibits from time to time, more especially bearing on the theme which may be briefly designated ‘God in history,’ arrest our attention now, and must have impressed his contemporaries still more strongly; while in learning and comprehensiveness it is without a rival.” The wide acquaintance with classical literature exhibited by Eusebius in the Præparatio is very remarkable. Many writers are referred to whose names are known to us from no other source, and many extracts are given which constitute our only fragments of works otherwise totally lost. The Præparatio thus does for classical much what the History does for Christian literature.

A very satisfactory summary of the contents of the Præparatio is given at the beginning of the fifteenth book. In the first, second, and third books, the author exposes the absurdities of heathen mythology, and attacks the allegorical theology of the Neo-Platonists; in the fourth and fifth books he discusses the heathen oracles; in the sixth he refutes the doctrine of fate; in the seventh he passes over to the Hebrews, devoting the next seven books to an exposition of the excellence of their system, and to a demonstration of the proposition that Moses and the prophets lived before the greatest Greek writers, and that the latter drew their knowledge from the former; in the fourteenth and fifteenth books he exposes the contradictions among Greek philosophers and the vital errors in their systems, especially in that of the Peripatetics. The Præparatio is complete in fifteen books, all of which are still extant.

The Demonstratio consisted originally of twenty books (see Jerome’s de vir. ill. 81, and Photius’ Bibl. 10). Of these only ten are extant, and even in the time of Nicephores Callistus no more were known, for he gives the number of the books as ten (H. E. VI. 37). There exists also a fragment of the fifteenth book, which was discovered and printed by Mai (Script. vet. nova coll. I. 2, p. 173). In the first book, which is introductory, Eusebius shows why the Christians pursue a mode of life different from that of the Jews, drawing a distinction between Hebraism, the religion of all pious men from the beginning, and Judaism, the special system of the Jews, and pointing out that Christianity is a continuation of the former, but a rejection of the latter, which as temporary has passed away. In the second book he shows that the calling of the and the repudiation of the Jews are foretold in Scripture. In books three to nine he discusses the humanity, divinity, , and earthly life of the Saviour, showing that all were revealed in the prophets. In the remainder of the work we may assume that the same general plan was followed, and that Christ’s death, resurrection, and ascension, and the spread of his Church, were the subjects discussed in this as in nearly all works of the kind.

There is much dispute as to the date of these two works. Stroth and Cave place them after the Council of Nicæa, while Valesius, Lightfoot, and others, assign them to the ante-Nicene period. In two passages in the History Eusebius has been commonly supposed to refer to the Demonstratio (H. E. I. 2 and 6), but it is probable that the first, and quite likely the second also, refers to the Eclogæ Proph. We can, therefore, base no argument upon those passages. But in Præp. Evang. XII. 10 (Opera, III. 969) there is a reference to the persecution, which seems clearly to imply that it was still continuing; and in the Demonstratio (III. 5 and IV. 6; Opera, IV. 213 and 307), which was written after the Præparatio, are still more distinct indications of the continuance of the persecution. On the other hand, in V. 3 and VI. 20 (Opera, IV. 364 and 474) there are passages which imply that the persecution has come to an end. It seems necessary then to conclude, with Lightfoot, that the Demonstratio was begun during the persecution, but not completed until peace had been established. The Præparatio, which was completed before the Demonstratio was begun (see the proœmium to the latter), must have been finished during the persecution. It contains in X. 9 (Opera, III. 807) a reference to the Chronicle as an already published work (see above, p. 31).

The Præparatio and Demonstratio are found in Migne’s edition of the Opera, III. and IV. 9 sq. A more recent text is that of Dindorf in Teubner’s series, 1867. The Præparatio has been published separately by Heinichen, 2 vols., Lips. 1842, and by Gaisford, 4 vols., Oxon. 1843. The latter contains a full critical apparatus with Latin translation and notes, and is the most useful edition which we have. Seguier in 1846 published a French translation with notes. The latter are printed in Latin in Migne’s edition of the Opera, III. 1457 sq. The French translation I have not seen.

The Demonstratio was also published by Gaisford in 2 vols., Oxon. 1852, with critical apparatus and Latin translation. Hænell has made the two works the subject of a monograph entitled De Eusebio Cæsariensi religionis Christianæ Defensore (Gottingæ, 1843) which I know only from the mention of it by Stein and Lightfoot.

Præparatio Ecclesiastica (᾽Εκκλησιαστικὴ Προπαρασκευή), and Demonstratio Ecclesiastica (᾽Εκκλησιαστικὴ ᾽Απόδειξις). These two works are no longer extant. We know of the former only from Photius’ reference to it in Bibl. 11, of the latter from his mention of it in Bibl. 12.