Harmenopulus, in the Prolegomena to his Hexabiblon (§ 20), mentions his obligations to the of Magister, who was evidently a judge as well as an interpreter of law, for Harmenopulus frequently cites his decisions and decrees: Harmenopulus also several times cites Patricius, and, wherever such a citation occurs, there is always a marginal reference in manuscripts to the which appears to be the same as the of Magister. In Harmenopulus (4. tit. 12.10), is a passage cited from Patricius, with a marginal reference to the and the same passage is attributed in a scholium on the (60. tit. 37, vol. vii. p. 678) to Romanus.

This work of Magister was divided into titles, and the titles Περὶ Γυναικῶν, Περὶ Κληρονομίας and Περὶ Διαθηκῶν, are cited in the (5. tit. 9. §§ 11, 12, 13). Mortreuil (Histoire du Droit Byzantin, ii. p. 503, Paris, 1844,) identifies the with the of Eustathius.

The Σημειώματα, or observations of Magister, are also mentioned in the Hexabiblon (3, tit. 3. 111).

Sometimes, when Magister is cited in Harmenopulus, there is a marginal reference to the Μικρον κατα Στοιχεῖον, and in Basil. vii. p. 22, mention is made of the Στοιχεῖον τοῦ Μαΐστορος; but the work which now exists in manuscript, and passes under the name of the Μικρὸν κατὰ Στοιχεῖον, or , has been usually attributed to Docinmus, or Docimius, and is of a later date than Eustathius. (Reiz. Index Nom. Prop. in Harmenop. s. vv. Masister; Patricius, Μικρὸν, in Meerman. Thes. Suppl. pp. 389-400; Zachariae, Hist. Jur. Gr. Rom. Delin. § 47.)

The names of Eustathius and Romanus occur several times in the Scholia on the Basilica, e. g. Basil. iv. p. 489, iii. p. 340. 56. 480, 7.678. 694. The Ὑπόμνημα of Eustathius is cited Basil. iii. p. 116. It is a tract of the date A. D. 1025,

Heimbach (Anecdota, i. p. lxvi.) mentions a manuscript in the Vatican at Rome (cod. 226, fol. 294-300) under the title (sic) τοῦ Ῥωμαίου. He supposes that the title ought to be read Ὑπόμνημα περὶ βίου Εὐσταθίου τοῦ Ῥωμαίου.

In the last-cited passage, the Scholium gives an extract from the and mentions Patricius as the author. Eustathius is here to be understood, and not, as Heimbach and Fabricius supposed, the earlier Patricius Heros. The Πεῖρα, or Practica, of Eustathins is cited in the Scholia, Basil. vii. p. 516. 676-7. The is a work written not by Eustathius himself, but by some judge or assessor of the judgment-seat. It conists of 75 titles, under which are contained extracts from proceedings in causes tried at Constantinople, and determined by various judges, espacially by Roimanus. Most of these causes were heard in the Hippodromus. a name of a court paralleled by our English Cockpit. Πεῖρα (which appears better to deserve publication than some of those remains of Graeco,-Roman Jurisprudence which have been lately given to the world by Heimbach and Zachariae) exists in manuscript in the Medicean Library at Florence (Cod. Laurent. lxxx. fol. 478, &c.), with the title . (Zachariae, Hist. Jur Gr. Rom. Delin. § 41.)

Another unpublished work of Eustathius is his treatise Περὶ Ὑποβόλου, which is in manuscript at Paris. The meaning of the word ὑποβόλου has been a subject of much dispute. (Du Cange Gloss. Med. et Inf. Graec. s. v.) It seems ordinarily to mean that to which the wife is entitled by agreement or particular custom upon the deatll of her husband, over and above the dowry she brought him.

2. To Eustathius Romanus has been falsely ascribed a work concerning prescription and the legal effect of periods of time from a moment to a hundred years.

Nessel (cited by Sammet. Diss. de Hypobolo in Meerm. Thus. Suppl. p. 382) attributes, not to Eustathius Romanus, but to the earlier professor Eustathius, a synopsis of juridical actions, entitled , which is found appended in manuscript to the

An Edict of the Eustathius who was Pr. Pr. Orientis under Anastasius in A. D. 506, is published by Zachariae (Anecdota, p. 270).