But Murillo alone rose to the full height of this great theme, and he will always be considered as, _par excellence_, the _Pintor de las Concepciones_. He painted the Conception twenty-five times, and not twice in the same way. Two are at Paris, several in England, three at Madrid, and four in this museum, one of which is called the _Perla_――a pearl indeed. Innocence and purity, of course, are the predominant expressions of these Virgins, from the very nature of the subject. Mary is always represented clothed in flowing white robes, and draped with an azure mantle. She is radiant with youth and grace, and mysterious and pure as the heaven she floats in. Her small, delicate hands are crossed on her virginal breast or folded in adoration. Her lips are half open and tremulous. She is borne up in a flood of silvery light, calmly ecstatic, her whole soul in her eyes, which are bathed in a humid languor, and her beautiful hair, caressed by the wind, is floating around her like an aureola of gold. The whole is a vision as intoxicating as a cloud of Arabian incense. It is a poem of mystical love――the very ecstasy of devotion. Murillo’s best paintings were done for the Franciscans, the great defenders of the doctrine of the Immaculate Conception. From the Capuchins of Seville perhaps he derived his inspiration. They were his first patrons. He loved to paint the Franciscan saints, as well as their darling dogma. Such subjects were in harmony with his spiritual nature. He almost lived in the cloister. Piety reigned in his household. One of his sons took orders, and his daughter, Francisca, the model of some of his virgins, became a nun in the convent of the _Madre de Dios_. Among his paintings here is one of “St. Francis at the foot of the Cross,” trampling the world and its vanities under his feet. Our Saviour has detached one bleeding hand from the cross, and bends down to lay it on the shoulder of the saint, as if he would draw him closer to his wounded side. St. Francis is looking up with a whole world of adoring love in his eyes, of self-surrender and _abandon_ in his attitude. Though sombre in tone, this is one of the most expressive and devotional of pictures, and, once seen, can never be forgotten.