So far from being merely an artistic mind Leonardo da Vinci had typically the scientific and inquiring mind. Whenever a scientific problem came up to him, no matter how others had solved it before him and above all no matter how his contemporaries were solving it, he solved it for himself and almost inevitably in the true light of science. For instance while he was engineer, in charge, to use our modern term, of the canals of central Italy, the cuttings necessary for them brought to light a series of fossils. These were mainly shells resembling the seashells of his time, though not exactly like them. Before this a number of such finds had been made and man had found it very hard to explain them. They were usually [{23}] uncovered beneath a rather thick layer of earth. They looked like shells that belonged to creatures that had lived on a seashore. How could their presence be explained far from the sea and completely covered up? Occasionally, when found near the surface on the tops of rather high mountains a distance from the sea, the explanation had been offered and generally accepted that they had been deposited there by the Deluge. The buried shells and especially those deeply buried could not be thus explained. Scientists, and let us not forget that it was scientists in the true sense of the term who were especially concerned with such objects, men who knew their mathematics and principles of science very well and who had made valuable observations in other departments of science, evolved a learned theory of their presence. These were incomplete beings occurring in the earth because of a surplusage of creative power that had not quite finished its work. Their development had been arrested as it were before they actually became living creatures. When Leonardo da Vinci ran across the shells in the cuttings for his canals, he suggested another and a simpler explanation as it seemed to him. These were actually marine shellfish, which had been deposited where they now were at a time when this portion of land was submerged by the sea. They had become covered during the process of sedimentation and transformation of the land which had gradually pushed the sea far away. It always requires a genius to offer so simple an explanation as that, and as a rule it seems quite out of the question to most of his contemporaries, because of its very simplicity. They usually express their disdain for such simple-mindedness or wrong-headedness rather forcibly, though after a time they come to accept the explanation of it, but usually refuse to give the inventor any credit for his idea, because it now seems so obvious that they cannot think of it as so very new, after all.
We know that Leonardo had made a series of studies of the shells of the seashore, though ordinarily it was presumed that his studies had been directed rather to their artistic beauty than to scientific knowledge with regard to them. Apparently his very familiarity with them, however, led him to lay the foundation stone of the science of palaeontology. There are [{24}] sketches of a number of the spiral shells to be found in his notebooks. These are all charming in their pretty curves, and they caught his artistic eye. Nature never makes anything merely useful. This strong outwardly rude cover of shell for the amorphous ugly shellfish--that is, ugly according to most human standards--is very pretty in its forms and its color. The fine use that Leonardo made of his study in seashells was pointed out by someone who studied some of the spiral staircases for the corners of palaces in Northern Italy which Leonardo is said to have planned. These were only private stairways leading usually from the ladies' apartments to the gardens of the castles and were probably designed to be useful as fire escapes. They projected sometimes from the angles of the building. We know what hideous things fire escapes can be. These were very pretty and effectively decorative. They were planned in imitation of the spirals of some of the whorl seashells that Leonardo had been studying.
Everywhere we find that mixture of the devotion to the useful and the practical as well as the aesthetic, to the scientific as well as the artistic. He made a series of dissections. These dissections were made at a time when, if we would believe certain of our modern historians of science in its relation to religion, the Church had absolutely forbidden dissection. Such declarations are all the more incomprehensible because not only did all the anatomists and surgeons of this century do dissection quite freely, and the greatest dissections were done in Rome by the Papal Physicians in the Papal Medical School, but every artist of the time studied anatomy for art purposes through dissections. We have dissections from Raphael and from Michelangelo and from many others as well as from Leonardo da Vinci.
Leonardo proposed after making a large number of dissections to write a text-book of anatomy. Ordinarily it might seem that such a text-book from an artist's hands would be eminently superficial and not at all likely to further the science of anatomy, though it might be helpful for students of art, especially in their dissection work. During the past twenty years, however, a series of Leonardo's sketches made from his dissections have been republished from a number of [{25}] collections of the originals in important libraries in Europe. The collection at Windsor Castle in England is particularly valuable and the sketches are very complete. Anyone who looks over these republications will realize at once that had Leonardo written his text-book of anatomy and illustrated it with his own drawings, it would have been an epoch-making landmark in the history of anatomy and of medicine.
It was not until a quarter of a century after the artist's death that Vesalius, but five years old when Leonardo died, published his great anatomical text-book. At the time Vesalius was only twenty-seven years of age, but his work revolutionized anatomy and he is rightly greeted as the father of modern anatomy. Had Vesalius had the opportunity to consult Leonardo's work, his own would have been greatly facilitated. It was not merely anatomy for art purposes but for all purposes, scientific as well as artistic, that Leonardo with characteristic thoroughness had studied.
There are studies of his in zoology, made evidently for the sake of his work in sculpture, that represent important additions to this scientific department. The same thing is true with regard to botany. Flowers caught his artistic eye, but they appealed quite as much to the scientific sense and so we find sketches of many varieties of them that are very interesting but also very startling from a scientific standpoint because they show a knowledge of the parts of the flowers in detail not usually supposed to exist at that time. One is not surprised to hear that he did distinguished work in mathematics. Somehow the exact scientific bent of his mind and its literalness in all matters pertaining to science would lead us to expect that. There probably never has been a mind so thoroughly rounded out as his. Aristotle had greater scientific precision and wider knowledge, but lacked something at least of Leonardo's power to execute his artistic ideas, or we would surely have some great art from him or traditions of it. It is even not startling, with this knowledge of the scientific side of Leonardo's mind, to find that he advanced a theory of evolution. That generalization far from being new, as is often imagined, has appealed to many great investigating minds down the centuries, according to the title of a modern [{26}] scientist's history of the theory all the way "From the Greeks to Darwin."
One of the most interesting anticipations of a set of ideas that are definitely considered quite modern, and indeed have developed so recently that we are not quite sure of all their significance as yet, is Leonardo da Vinci's occupation with muscular movements and the saving of time and labor by carefully regulating these movements. He suggested that each different kind of work done by human muscular labor should be carefully studied, with the idea of simplifying and reducing the number of movements necessary for its accomplishment in order to save both time and effort. In a word he anticipated practically the modern ideas of the efficiency engineer of the present time though, as I have said, we are rather prone to think these ideas quite new and recent.
The personality of this universal genius is one of the most interesting that mankind has to study. Every detail is of special import. Leonardo da Vinci was born of the noble Florentine house of Vinci in the Val d'Arno. He was a precocious child, attracting attention by his beauty of feature and by his winning ways. There are stories of his improvising music and songs even when he was very young. A little later we hear of him pitying the caged songbirds and buying them and setting them free. As a growing boy he liked colors; indeed, they may almost be said to have had a fascination for him, and the bright dresses of the Florentine girls and of the peasants from the vicinity caught his eye. Tradition also connects him with a fancy for spirited horses. As if these were not enough to show an artistic temperament, while still scarcely more than a boy he began to design and sketch and even mould objects that he was interested in. Vasari's stories of him show that even at this early date, when he was only a boy, his sketches and plastic work had for subjects smiling women.
His vocation seemed clear and his father took him for education to the workshop of Andrea del Verrocchio, then the greatest artist in Florence and one whose work has always maintained an influence over succeeding generations. Those of us who have seen his "Colleoni" in Venice are likely to think [{27}] of him as a great sculptor. Undoubtedly he was one of the great sculptors of the world, but he had the broad artistic spirit of the men of the Renaissance, and there was no form of art in which he was not interested and in which he did not accomplish things worthy of his great time to be the admiration of succeeding generations. Verrocchio was a great painter as well as a sculptor, but he was also a worker in metals and, as so many of these artists of the Renaissance, quite ready to design household objects for even ordinary use, provided only he was allowed to put beauty in them. Drinking vessels, instruments of music, gates, wooden doors and above all any objects that were meant for sacred uses he was glad to take commissions for.
It was just the place to train such a many-sided genius as Leonardo, though rather let us say it was just the place for such a many-sided genius to find and train himself. Certainly the young Leonardo must have owed very little except suggestion and some minor directions in technics to anyone else. He very soon came to surpass his master in painting at least, and the master recognized that fact apparently without any jealousy. According to the story as we have it, Verrocchio was employed by the Brethren of Vallombrosa to paint the "Baptism of Christ." Leonardo was given by the master permission to paint an angel in the left-hand corner. There was such a striking contrast between the fresh youthful work of the pupil and the labored work of the master that Verrocchio is said to have painted no more, or at least made no more ambitious attempts at great pictures. Sculpture was always the favorite of the old master, however, so that it was not so much of a tragedy.