No one but Murillo could ever have thus embodied his conception of a supernatural vision. On sitting down before this canvass, from which, as it extends across the whole chapel, no other object can draw off the attention, you speedily yield to the irresistible power of abstraction, and are lost in an ecstacy, nearly resembling that which the artist has sought to represent in the countenance and attitude of his Saint. The eye wanders in a sort of trance through the glorious assemblage of Heaven. The whole scene looks real: but it is only on taking time to study the details that you discover the prodigies of talent displayed in the drawing and finishing of this picture. An angel, suspended in front of the lower portion of the group, more especially attracts the attention. One leg is extended towards the spectator, the foreshortening of which is a marvel of execution. Over the San Antonio, as it does not reach to the ceiling, there is a smaller picture, representing the Baptism of Christ, also by Murillo. In a chapel at the south-west angle of the church, there are several fine paintings by Luis de Vargas, one of the founders of the school of Seville. In the choir, the collection of books for the chanting services is worth seeing. Of these immense folios, enclosed in massive covers, bound with a profusion of wrought metal mostly silver--may be counted upwards of a hundred. They are filled with paintings, infinite in minuteness and beauty. For the performances of the daily services and all duties, ordinary and extraordinary, within this edifice, more than eight hundred persons are employed. Five hundred masses are recited each day at the different altars: all of which taking place during the early part of the day, an idea may be formed of the business which goes on. Of the six or seven organs, I have heard three playing at the same time in different parts of the church; but so widely separated, as by no means to interfere with each other's harmony. One of them was one of the two great organs which face each other over the choir. These two play a duet once a year, on the day of the Corpus. The effect they produce is not so powerful as that produced at Toledo, but far more beautiful. At Toledo the two which correspond to these, are assisted on that occasion by a third, as powerful as both the others united, placed over the portal of the south transept, at an elevation of about seventy feet from the ground.