Città del Vaticano, Biblioteca Apostolica Vaticana, Reg. lat. 281

1v-7r, Felix of Urgell (?) - Liber de variis quaestionibus adversus Iudaeos ac caeteros infideles seu quoslibet haereticos

Link to digitization: here.
Here a fragment (ch. 49) under the name of Isidore of Seville, at the beginning are erased three lines written in majúscules. This text piece was already known to Francisco Arévalo who published it in the Apéndices of his Opera omnia of Isidore of Seville: ARÉVALO 1803, Appendix XIV, p. 336–340; WILMART 1945, p. 89 sq. (“Saec. IX (ante med.) ... Pseudo-Isidori (ut videtur) de activa vita atque contemplativa”); MADOZ Y MOLERES 1949, p. 148 (“siglo IX/X”); VEGA Y RODRÍGUEZ 1949, p. 263 sq. (“siglo IX ... fol. 2r–7r”); MADOZ Y MOLERES 1950; STEGMÜLLER 1951, p. 474 sq. no 5172, here p. 475 (“IX/X”); DÍAZ Y DÍAZ 1957, p. 42 sq.; DÍAZ Y DÍAZ 1958–1959, p. 108 no 401 (the manuscript is not mentioned); DEKKERS 1961, p. 277 no 1229 (the manuscript is not mentioned); HILLGARTH 1961, p. 30–32; Les manuscrits de la reine de Suède 1964, p. 85 no 1489; PALACIOS Y MARTÍN 1971; POTTHAST e. a. 1976, p. 440; HILLGARTH 1983; CICCARELLI 1989, p. 341; MACHIELSEN 1994, p. 292 sq. no 1087, here p. 293 (“s. IX1”; with the wrong folio-numbers “89–90”); DEKKERS 1995, p. 413 no 1229a (the manuscript is not mentioned); BISCHOFF 2014, p. 426 no 6649 (“(Westliches) Frankreich (Schreiber: Agambaldus), IX. Ih., 2. Viertel”); BOSSEMAN 2019, p. 58 n. 81; BOSSEMAN 2023, p. 24 n. 53; DE MAEYER 2023, p. 163 sq. no 5 (the text is not mentioned). Digitization: https://digi.vatlib.it/view/MSS_Reg.lat.281.