One of the first pictures painted for the Regent was a portrait of a favorite, the beautiful Cecilia Gallerani, a gifted woman, skilled in music and poetry. Leonardo painted for her a picture of the Virgin, for which she probably was the model. The infant Saviour is represented as blessing a new-blown Madonna rose, the emblem of St. Cecilia.
The next portrait—it is now in the Louvre—was that of another beauty, loved by the duke, Lucrezia Crivelli, formerly called La Belle Féronnière, who was a favorite of Francis I. "The face," says Mr. Sweetser, "is at once proud and melancholy, with a warm and brilliant coloring and soft pure lines, the head full of light, and even the shadows transparent." In honor of both these portraits Latin poems were written by the poets of the time.
Leonardo also painted two fine portraits of the lawful duke, Gian Galeazzo Sforza, and his wife, Isabella of Aragon, the latter picture "beyond all description beautiful and charming," now preserved in the Ambrosian Library. When these persons were married, Leonardo invented for the entertainment of the guests at the wedding feast a mechanical device called "The Paradise," a representation of the heavens and the revolving planets, which opened as the bride and bridegroom approached, while a person in imitation of the Deity recited complimentary verses.
Leonardo now began on the great equestrian statue of the warrior Francesco Sforza. He studied ancient works of art, especially the equestrian statue of Marcus Aurelius in Rome, made almost countless drawings of horses in repose or on the battle-field, many of which are still preserved at Windsor Castle, studied every movement of live horses and every muscle of dead ones, and did not complete his clay model for ten long years. A genius like Da Vinci spends ten years on the model of an equestrian statue, and yet some artists of the present day, men and women, paint and mould horses or human beings after a few weeks or months of study, and expect to win fame!
When the clay model was exhibited in public at the royal wedding of the sister of Gian Galeazzo to the Emperor Maximilian, the enthusiasm was very great. All Italy talked of it, and poets and critics extolled it as beyond the works of Greece or Rome. Unfortunately the ensuing wars depleted the treasury of Milan, and prevented the work from being cast in bronze. When the French entered Milan in 1499, it became a target for the archers. Two years later the Duke of Ferrara asked the use of the model that a bronze horse with a statue of himself might be made; but the King of France refused, and the model finally disappeared.
During these years Leonardo founded the Milan Academy. Probably many of the manuscript volumes which he left were notes of lectures delivered to the students. He must have spoken to them on botany, optics, mechanics, astronomy, hydrostatics, anatomy, perspective, proportion, and other matters. He wrote a book on the anatomy of the horse. "He also," says Vasari, "filled a book with drawings in red crayons, outlined with the pen, all copies made with the utmost care from bodies dissected by his own hand. In this book he set forth the entire structure, arrangement and disposition of the bones, to which he afterwards added all the nerves, in their due order, and next supplied the muscles, of which the first are affixed to the bones, the second give the power of cohesion or holding firmly, and the third impart the motion."
Leonardo said in his notes, "The painter who has obtained a perfect knowledge of the nature of the tendons and muscles, and of those parts which contain the most of them, will know to a certainty, in giving a particular motion to any part of the body, which and how many of the muscles give rise and contribute to it; which of them, by swelling, occasion their shortening, and which of the cartilages they surround. He will not imitate those who, in all the different attitudes they adopt or invent, make use of the same muscles in the arms, back, or chest, or any other parts.... It is necessary that a painter should be a good anatomist, that in his attitudes and gestures he may be able to design the naked parts of the human frame, according to the just rules of the anatomy of the nerves, bones, and muscles; and that, in his different positions, he may know what particular nerve or muscle is the cause of such a particular movement, in order that he may make that only marked and apparent, and not all the rest, as many artists are in the habit of doing; who, that they may appear great designers, make the naked limbs stiff and without grace, so that they have more the appearance of a bag of nuts than the human superficies, or, rather, more like a bundle of radishes than naked muscles."
Leonardo irrigated the dry plains of Lombardy by utilizing the waters of the Ticino River, visiting many cities and towns throughout Lombardy for this purpose, and carefully studying the canals of Egypt under the Ptolemies. He studied ancient architecture also. In his epitaph, composed in his lifetime, he calls himself, "The admirer of the ancients, and their grateful disciple. One thing is lacking to me, their science of proportion. I have done what I could; may posterity pardon me."
He designed a palace for Count Giovanni Melzi, at Vaprio, which became a favorite home for him, especially in the time of war—the residence of his beloved pupil, Francesco Melzi.
In 1492, after Leonardo had been eleven years at the Court of Milan, Lodovico, unscrupulous and immoral, married the gentle and saintly Beatrice d'Este. Leonardo conducted the grand wedding festivities, and designed and decorated the bride's apartments in the Castello della Rocca, making a beautiful bath-room in the garden, adorned with colored marbles and a statue of Diana. While the regent in no wise discontinued his profligate habits, he yet desired to please his wife, by gratifying her taste for religious things. As she had shown an especial fondness for the Dominican church and convent of Santa Maria delle Grazie, Lodovico ordered them reconstructed and embellished for her. In the refectory, the artist painted kneeling portraits of Beatrice, her husband, and their two little children, Maximilian and Francesco; but they have long since faded.