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together fifty-three papers. The third series, also in octavo, appeared (1876-81), in quarterly numbers, each volume having twelve lithographic plates; the papers numbered altogether fifty-one. The fourth series, in octavo, appeared in yearly volumes (1882- 89), each volume having twelve lithographic plates; the six volumes contain altogether forty-three papers. The fifth series, in octavo, appeared annually (1889- 94), with zincotype plates and illustrations in the text; the last number was issued in 1894 by Giuseppe Gatti. The final volume of each series contained a full index which De Rossi prepared with the greatest care. (4) "Musaici delle chiese di Roma anteriori al secolo XV" (Rome, 1872), an imperial folio consist- ing of chromolithographic plates with a text in French and Italian. The work closed with the twenty-fifth number, issued after De Rossi's death. (5) "Codicum latinorum bibliothecEe Vaticanae", vol. X, Pt. I, Nos. 7245-8066, Pt. II, Nos. 8067-8471; vol. XI, Nos. 8472-9019; vol. XII, Nos. 9020-9445; vol. XIII, Nos. 9446-9849. The indexes to vols. XI, XII, XIII, "Codicum lat. Vat." are: Pt. I, index of authors; Pt. II, index of places, things, and persons. These manuscript indexes are used as reference books in the Vatican Library. (6) " Inscriptiones Urbis Romse latinse. Collegerunt Gulielmus Henzen et Johannes Baptista de Rossi. Ediderunt Eugenius Bormann et Gulielmus Henzen" (Berlin, 1876 — ). This consti- tutes the sixth volume of the "Corpus Inscriptionum Latinarum consilio et auctoritate academise litter- arum regije BorussicEe editura" (Berlin). The in- vitation to De Rossi to act as one of the leading edi- tors was given 22 January, 1854. (7) The five annual reports (1854-58), concerning the preparatory work for the above-mentioned "Corpus Inscriptionum", which appeared in the monthly bulletins of the Royal Academy of Science of Berlin. The other annual re- ports have not been published; this is also the case with De Rossi's synopses of the epigraphical manu- scripts in the libraries of Italy, France, Germany, Switzerland, and Austria. The last named summaries are of the greatest importance. (8) "(Euvres com- pletes de Bartolommeo Borghesi " (9 vols., Paris, 1862- 84). Napoleon III entrusted the task of collecting and editing the works and letters of the celebrated Borghesi to a committee of French, German, and Italian scholars, among whom De Rossi may be said to have been the most important and assiduous. (9) " Mar- tyrologium Hieronyinianum", prepared and edited in collaboration with Louis Duchesne in vol. I, Novem- ber, of the Acta SS. (Brussels, 1894). This edition is a masterpiece and most of the objections raised against it by German scholars are of little importance.

The works briefly described above give some con- ception of the learned labours De Rossi carried on dur- ing his life They are proofs of the genius with which he grasped a subject, of his extraordinary industry, his learned mastery of the most varied subjects, and the unwavering determination with which he imeart.hed obscure points; they also show the triumphs with which his toils were so richly crowned. The estima- tion in which his work was held is proved by the two international celebrations in 1882 and 1892 upon his sixtieth and seventieth birthdays.

De Rossi's father died in 1850, and his mother in 1861. In the latter year he married Costanza, daughter of Count Pietro Bruno di San Giorgio Torna- fort of Piedmont, by whom he had two tlaughters; Marianna, the elder, died in 1864. The second, Na- talia, born in 1866, married the Marchese Filippo Fer- raioli. De Rossi's brother Mifhcl<' Sicfano was his zealous assistant in the exploratimi of the catacombs; the geological questions cotiiH'ctid with the.se subter- ranean places of burial and all kindred subjects are treated by Micheh; in separate papers in " Roma Sot- terranea". He also prepared the very accurate plans of the catacombs. De Rossi was a portly man of fine

appearance, somewhat over the middle height. The full, well-proportioned face was surrounded by a grayish beard which left the chin free. The clear, calm eyes lost much of their strength, so that he could not always supervise properly the work of his painters and draughtsmen in the catacombs. This explains the numerous inaccurate illustrations in his works which Wilpert has corrected. The smoothly brushed hair gave greater prominence to the high domed forehead. In walking De Rossi bent slightly forward, which man- nerism gave to his gait an appearance of much delib- erateness. On the street he was generally busy with a book or pamphlet. De Ro.ssi heard Mass every day and went to Communion nearly every week. Gener- ous, unobtrusive charity was a second nature with him. Every evening he gathered all the members of his household about him for the recitation of the ros- ary. Although he very often received tempting offers to desert the cause of the Holy See and join the party of United Italy, he rejected all such proposals, even when they came from the highest authorities. On this point he was absolutely immovable. A few months after the international celebration of his sev- entieth birthday in 1892, De Rossi had an attack of apoplexy from which he never entirely recovered. Unable after this to use his right hand he continued to write with the left for the "Bullettino" and in making the corrections to the "Martyrologium". But his days were numbered. In the summer of 1894 Leo XIII offered him the use of an apartment in the papal palace at Castel Gandolfo, where he peacefully passed away, a true son of the Church. He was buried in the Agro Verano (general cemetery) at Rome.

Baumgarten, Giovanni Battista De Rossi, jubilee monograph (Cologne, 1892), enlarged Ital. trans, by Bon.wenia (Rome, 1892) ; Marucchi, Giovanni Battista De Rossi: Cenni bioprafici (Rome, 1903); Konversalionslex. (St. Louis, Missouri, 1903), II, 1163; Kraus, Essays (Stuttgart, 1896), I; Baumgarten, Nekrolog. in Kvlnische Volkszeitung (No. 639, 28 Oct., 1894); Capecelatho, Necrologia in the Atti della Pontificia Acca- demia Ronunui di Archeologia, printed in supplement to No. 273 of the Ossenatore Romano (29 Nov., 1894); Shahan, John Bapti'jt De Rossi in Am. Oath. Quart. Review (Philadelphia, 1S95): cf. Dissertazioni della Pont. Accad. Romana di Archeol. (Rome, 1895), Ser. II, Vol. VI. Fasc. iv, 1-25; Grossi-Gondi AND Angelini, a Giovanni Battista De Rossi, address at the dedication of the cenotaph in the parish church of Castel Gan- dolfo, 17 Oct., 1897. in La Settimana Retigiosa (Rome, 1897). Information concerning his writings and the festal celebrations of 1882 and 1892 are contained in: Albo dei sottoscrittori per la

?daglia d' rclazione della soh n i bre ;SS2 (Rome. 1^- del Comm. G. B. 1 1< net di SO e 35 Aprii giare il settantes '

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mendatore Gio. Bail. De Rossi e l>i,, ntarla in Laterano il 11 Decern- ( nttoscrittori pel busto marmoreo !:i,'ne dell' inangurazione fattane ,"u d eimitero di Callisto per festeq' del principe della sacra archeologia (Rome, 1892). The two last-named publications printed pri- vately give the best account of De Rossi's literary work, and of his important position in the international world of letters. Cozz.A-Luzl, La dedica del busto di Giovanni Battista De A'.i.ss? nella Pont. Accademia Rom. di Archeologia il If^ Nov., J.sYC, in Dissertazioni della Pont. Ace. (Rome, 1897), Ser. II, Vol. \'I. De Ro.ssi's library came, by inheritance, to the family of hi; brother which eventually offered it for .sale; the first cataloKu( of it was: Ricca biblioteca appartenuta al Comm. G. B. De Ross (Rome, 1899); Bar (a second-hand bookseller) of Frankfor bought it and issued a scientitically arranged catalogue. .\c counts of De Rossi are to be found in all general encydope^lias the writers of the obituaries which appeared after his deati were seldom versed in Christian archa'oiogy.

Paul Maria Baumgarten.

Derry (Deria), Diocese of (DERRiENSis),includ( nearly all the County Derry, part of Donegal, and a larg portion of Tyrone, Ireland'; it is a suffragan of Armagl The diocese owes its origin to the monastic establisl ment foimded there by St. Columba between 546 an: 562. But there does not seem to have been a bisho' resident at Derry before Gervase O'Cervallen (e. 1230, The entry in the "Annals" by which O'Brolchain ; represented tis Bishop of Derry is due to a mistransb' tion. lie was merely the superior of the Cohunbs' monastic hou.ses, .and w:is accorded the honour of ' se;it in the assembly of the bi.shops. The prcser Diocese of Derry was formed by a imion of the o Sees of Rathlure and .•Vrdstraw founded by St. B''