In the fourth year after the definition of the dogma of the Immaculate Conception, the blessed Virgin vouchsafed to appear on several occasions to a poor but pious and innocent child named Bernadette, in a rocky cavern overlooking the grotto of Massabielle on the banks of the Gave near the town of Lourdes in the diocese of Tarbes in France. She showed herself as a young and gracious figure, robed in white, with a white veil and blue girdle, and golden roses on her bare feet. At the first apparition on February 11, 1858, she taught the child to make the sign of the Cross correctly and devoutly, and, taking a chaplet from her own arm, encouraged her by example to say her rosary. This was repeated at subsequent apparitions. On the second day, Bernadette, who feared an illusion of the devil, in all simplicity cast holy water at the apparition, who smiled more graciously than before. At the third apparition Bernadette was invited to repeat her visits to the grotto for fifteen days, during which the blessed Virgin conversed with her, exhorted her to pray for sinners, kiss the ground and do penance, and finally commanded her to tell the priests that a chapel was to be built in the place and processions held. She was also bidden drink and wash in the water, and a spring, until then invisible, gushed out of the ground. On the feast of the Annunciation, the child earnestly begged the Lady who had so often visited her to reveal her name, and the blessed Virgin, joining her hands and raising her eyes to heaven, said: 'I am the Immaculate Conception.’
Rumours of favours received at the holy grotto spread rapidly, and the crowds of devout visitors increased daily, so that the Bishop of Tarbes, who had been impressed by the candour of Bernadette, found it advisable to hold a judicial enquiry into the facts. In the course of the fourth year he gave sentence, recognizing the supernatural character of the apparition, and permitting devotions to our Lady under the title of the Immaculate Conception to be held in the grotto. A chapel was soon built, and since then every year has witnessed innumerable pilgrimages from France, Belgium, Italy, Spain, and all parts of Europe and America. The name of Our Lady of Lourdes has become famous all over the world, and cures are obtained everywhere by use of the water. Lourdes has been enriched by a grateful world with splendidly decorated churches, where countless banners bear witness to the favours received and to the desire of peoples and cities to adorn the house of the blessed Virgin, who is honoured there as in her own palace. The days are filled with prayers, hymns and solemn ceremonies, and the nights are sanctified by the pious supplications of countless people who walk in procession carrying torches, and singing the praises of the blessed Virgin Mary.
All men know how, in spite of the coldness of the world, these pilgrimages have revived faith, restored the observance of the Christian religion, and increased devotion to the Immaculate Virgin. The Faithful are led by their priests in this marvellous development of faith and devotion. The Bishops make frequent visits to the holy spot, lead pilgrimages, and take part in the ceremonies, and the Cardinals of Holy Church are often seen in the humble quality of pilgrims. The Roman Pontiffs have shown their devotion to our Lady of Lourdes, and have bestowed remarkable favours on her sanctuary. Pius IX. enriched it with indulgences, gave it the privilege of an Archconfraternity and the title of minor basilica, and delegated the Apostolic Nuncio in France to crown in his name the statue of the Mother of God. Leo XIII. also granted many favours, including the jubilee of the twenty-fifth anniversary of the Apparition. He encouraged pilgrimages, and ordained that the consecration of the Rosary Church should be performed in his name. Moreover, he crowned all these favours by conceding, at the request of many bishops, the celebration of a solemn feast under the title of the Apparition of Our Lady Immaculate, with a proper Office and Mass. Finally, Pius X., out of devotion to the Mother of God, granted the petition of many prelates that this feast should be extended to the Universal Church.
O God, Who by the Immaculate Conception of the Virgin didst prepare a worthy dwelling for Thy Son: we humbly beseech Thee, that we, who celebrate the Apparition of this same Blessed Virgin, may obtain health of soul and body. Through our Lord.