The book represents a rite hitherto entirely unknown but which can be no other than the ancient rite of Toledo, since in it the Annunciation is placed on the 18th December as is prescribed by the first canon of the tenth council of Toledo. It differs from the Mozarabic rite as to the number of Sundays in Advent, of which the latter reckons six, and also in the eight Masses for the Sundays after Epiphany and Pentecost; another peculiarity is that the Innocents’ Day is omitted on the 27th December, but an “Allisio Infantium” is kept instead in the 8th January. None of the Roman and Byzantine feasts of our Lady are mentioned, and only one feast of the Holy Cross on the 3rd May, omitting the other on the 14th September; all Masses for saints’ days have two epistles. The martyrology of Silos also is an important document on account of its original character, although it is some three centuries later than the lectionary. It is entitled, _Martyrum Legium_, and it is considerably richer in names of saints than the lectionary, and is quite independent of the _Hieronymianum_, though influenced in a slight degree by the Roman rite. The martyrs in the Moorish persecution, under, Abdurrhaman II., which lasted from 850 to 860, appear in large numbers. The historian of this persecution, the priest Eugenius of Toledo, who was put to death on 11th March 859, is entered, but placed on 1st June, the day of the translation of his relics; St Pelagius of Corduba, who suffered death on 26th June 925 under Abdurrhaman III. is also entered, and this date gives one limit in fixing the date of the work, the other limit being the year 1000. There are five additions by a later hand, _i.e._ on 12th March, _Gregorii Papæ_; on 1st May, _Transitus Philippi Apostoli_, without St James; on 28th April, _Prudentii et Sociorum ejus_; on 21st December, _S. Thomæ Apostoli_, and on 22nd December the _Translatio corporis S. Isidori_. Some personages are entered, who are not called saints, but only _Domnus_, four of whom belong to Toledo, two being bishops: Julian († 6th March 690) and Eugenius II. († 29th May 647); on 14th January, another Julian, and, on 13th March, _Depositio Leandri_. Half of the entire names belong to Spain, the other half to Rome and the East; of the Frankish martyrs, Denys of Paris, Afra of Augsburg, and Boniface of Mainz are commemorated. As regards the feasts of our Lady, besides the ancient Spanish feast on the 18th December, we have only the Assumption on 15th August. Litanies are appointed for 10th September, 7th November, and 15th December, besides a fast on 2nd January. The name of the Apostle St James is absent from the martyrology as well as from the lectionary. Bishop Torquatus and his companions are placed on 1st May, in both documents, but in the martyrology they are not described as disciples of the apostles, which is favourable to their historical existence. The Apostles Simon and Jude are on the 1st July instead of the 28th October,