No pains or expense have been spared in preparing the present work for the press. The cuts have been re-engraven with more attention to correctness in the drawing, than those which accompanied the two editions of the former English translation possessed (even though they had been fresh engraven for the impression of 1796); and the diagrams are now inserted in their proper places in the text, instead of being, as before, collected all together in two plates at the end. Besides this, a new Life of the Author has been also added by a Friend of the Translator, the materials for which have been furnished, not from vague reports, or uncertain conjectures, but from memoranda of the Author himself, not before used.
Fortunately for this undertaking, the manuscript collections of Leonardo da Vinci, which have lately passed from Italy into France, have, since their removal thither, been carefully inspected, and an abstract of their contents published in a quarto pamphlet, printed at Paris in 1797, and intitled, “Essai sur les Ouvrages physico-mathematiques de Leonard de Vinci;” by J. B. Venturi, Professor of Natural Philosophy at Modena; a Member of the Institute of Bologna, &c. From this pamphlet a great deal of original intelligence respecting the Author has been obtained, which, derived as it is from his own information, could not possibly be founded on better evidence.
To this Life we shall refer the reader for a further account of the origin and history of the present Treatise, conceiving we have already effected our purpose, by here giving him a sufficient idea of what he is to expect from the ensuing pages.
THE LIFE
OF
LEONARDO DA VINCI.
Leonardo da Vinci, the Author of the following Treatise, was the natural son of Pietro da Vinci, a notary of Vinci, in Tuscany[i1], a village situated in the valley of Arno, a little below Florence, and was born in the year 1452[i2].
Having discovered, when a child, a strong inclination and talent for painting, of which he had given proofs by several little drawings and sketches; his father one day accidentally took up some of them, and was induced to shew them to his friend Andrea Verocchio, a painter of some reputation in Florence, who was also a chaser, an architect, a sculptor, and goldsmith, for his advice, as to the propriety of bringing up his son to the profession of painting, and the probability of his becoming eminent in the art. The answer of Verocchio was such as to confirm him in that resolution; and Leonardo, to fit him for that purpose, was accordingly placed under the tuition of Verocchio[i3].
As Verocchio combined in himself a perfect knowledge of the arts of chasing and sculpture, and was a deep proficient in architecture, Leonardo had in this situation the means and opportunity of acquiring a variety of information, which though perhaps not immediately connected with the art to which his principal attention was to be directed, might, with the assistance of such a mind as Leonardo’s, be rendered subsidiary to his grand object, tend to promote his knowledge of the theory, and facilitate his practice of the profession for which he was intended. Accordingly we find that he had the good sense to avail himself of these advantages, and that under Verocchio he made great progress, and attracted his master’s friendship and confidence, by the talents he discovered, the sweetness of his manners, and the vivacity of his disposition[i4]. Of his proficiency in painting, the following instance is recorded; and the skill he afterwards manifested in other branches of science, on various occasions, evidently demonstrated how solicitous he had been for knowledge of all kinds, and how careful in his youth to lay a good foundation. Verocchio had undertaken for the religious of Vallombrosa, without Florence, a picture of our Saviour’s Baptism by St. John, and consigned to Leonardo the office of putting in from the original drawing, the figure of an angel holding up the drapery; but, unfortunately for Verocchio, Leonardo succeeded so well, that, despairing of ever equalling the work of his scholar, Verocchio in disgust abandoned his pencil for ever, confining himself in future solely to the practice of sculpture[i5].
On this success Leonardo became sensible that he no longer stood in need of an instructor; and therefore quitting Verocchio, he now began to work and study for himself. Many of his performances of this period are still, or were lately to be seen at Florence; and besides these, the following have been also mentioned: A cartoon of Adam and Eve in the Garden, which he did for the King of Portugal[i6]. This is highly commended for the exquisite gracefulness of the two principal figures, the beauty of the landscape, and the incredible exactitude of the shrubs and fruit. At the instance of his father, he made a painting for one of his old neighbours at Vinci[i7]; it consisted wholly of such animals as have naturally an hatred to each other, joined artfully together in a variety of attitudes. Some authors have said that this painting was a shield[i8], and have related the following particulars respecting it.
One of Pietro’s neighbours meeting him one day at Florence, told him he had been making a shield, and would be glad of his assistance to get it painted; Pietro undertook this office, and applied to his son to make good the promise. When the shield was brought to Leonardo, he found it so ill made, that he was obliged to get a turner to smooth it; and when that was done, he began to consider with what subject he should paint it. For this purpose he got together, in his apartment, a collection of live animals, such as lizards, crickets, serpents, silk-worms, locusts, bats, and other creatures of that kind, from the multitude of which, variously adapted to each other, he formed an horrible and terrific animal, emitting fire and poison from his jaws, flames from his eyes, and smoke from his nostrils; and with so great earnestness did Leonardo apply to this, that though in his apartment the stench of the animals that from time to time died there, was so strong as to be scarcely tolerable, he, through his love to the art, entirely disregarded it. The work being finished, Leonardo told his father he might now see it; and the father one morning coming to his apartment for that purpose, Leonardo, before he admitted him, placed the shield so as to receive from the window its full and proper light, and then opened the door. Not knowing what he was to expect, and little imagining that what he saw was not the creatures themselves, but a mere painted representation of them, the father, on entering and beholding the shield, was at first staggered and shocked; which the son perceiving, told him he might now send the shield to his friend, as, from the effect which the sight of it had then produced, he found he had attained the object at which he aimed. Pietro, however, had too much sagacity not to see that this was by much too great a curiosity for a mere countryman, who would never be sensible of its value; he therefore privately bought for his friend an ordinary shield, rudely painted with the device of an heart with an arrow through it, and sold this for an hundred ducats to some merchants at Florence, by whom it was again sold for three hundred to the Duke of Milan[i9].
He afterwards painted a picture of the Virgin Mary, and by her side a vessel of water, in which were flowers: in this he so contrived it, as that the light reflected from the flowers threw a pale redness on the water. This picture was at one time in the possession of Pope Clement the Seventh[i10].
For his friend Antonio Segni he also made a design, representing Neptune in his car, drawn by sea-horses, and attended by tritons and sea-gods; the heavens overspread with clouds, which were driven in all directions