Marco Polo says that in the province of Carazan "the rivers yield great quantities of washed gold, and also that which is solid, and on the mountains they find gold in the vein, and they give one pound of gold for six of silver."

Workers in gold or silver usually employ one of two methods—casting or beating, combined with delicacy of finish, chasing, and polishing. The technical processes are interestingly described by the writers of the old treatises on divers arts. In the earliest of these, by the monk Theophilus, in the eleventh century, we have most graphic accounts of processes very similar to those now in use. The naïve monastic instructor, in his preface, exhorts his followers to honesty and zeal in their good works. "Skilful in the arts let no one glorify himself," say Theophilus, "as if received from himself, and not from elsewhere; but let him be thankful humbly in the Lord, from whom all things are received." He then advises the craftsman earnestly to study the book which follows, telling him of the riches of instruction therein to be found; "you will there find out whatever... Tuscany knows of mosaic work, or in variety of enamels, whatever Arabia shows forth in work of fusion, ductility or chasing, whatever Italy ornaments with gold... whatever France loves in a costly variety of windows; whatever industrious Germany approves in work of gold, silver or copper, and iron, of woods and of stones." No wonder the authorities are lost in conjecture as to the native place of the versatile Theophilus! After promising all these delightful things, the good old monk continues, "Act therefore, well intentioned man,... hasten to complete with all the study of thy mind, those things which are still wanting among the utensils of the House of the Lord," and he enumerates the various pieces of church plate in use in the Middle Ages.

Directions are given by Theophilus for the workroom, the benches at which the smiths are to sit, and also the most minute technical recipes for "instruments for sculping," for scraping, filing, and so forth, until the workshop should be fitted with all necessary tools. In those days, artists began at the very beginning. There were no "Windsor and Newtons," no nice makers of dividers and T-squares, to whom one could apply; all implements must be constructed by the man who contemplated using them.

We will see how Theophilus proceeds, after he has his tools in readiness, to construct a chalice. First, he puts the silver in a crucible, and when it has become fluid, he turns it into a mould in which there is wax (this is evidently the "cire perdu" process familiar to casters of every age), and then he says, "If by some negligence it should happen that the melted silver be not whole, cast it again until it is whole." This process of casting would apply equally to all metals.

Theophilus instructs his craftsman how to make the handles of the chalice as follows: "Take wax, form handles with it, and grave upon them dragons or animals or birds, or leaves—in whatever manner you may wish. But on the top of each handle place a little wax, round like a slender candle, half a finger in length,... this wax is called the funnel.... Then take some clay and cover carefully the handle, so that the hollows of the sculpture may be filled up.... Afterwards place these moulds near the coals, that when they have become warm you may pour out the wax. Which being turned out, melt the silver,... and cast into the same place whence you poured out the wax. And when they have become cold remove the clay." The solid silver handles are found inside, one hardly need say.

In casting in the "cire perdu" process, Benvenuto Cellini warns you to beware lest you break your crucible—"just as you've got your silver nicely molten," he says, "and are pouring it into the mould, crack goes your crucible, and all your work and time and pains are lost!" He advises wrapping it in stout cloths.

The process of repoussé work is also much the same to-day as it has always been. The metal is mounted on cement and the design partly beaten in from the outside; then the cement is melted out, and the design treated in more detail from the inside. Theophilus tells us how to prepare a silver vessel to be beaten with a design. After giving a recipe for a sort of pitch, he says, "Melt this composition and fill the vial to the top. And when it has become cold, portray... whatever you wish, and taking a slender ductile instrument, and a small hammer, design that which you have portrayed around it by striking lightly." This process is practically, on a larger scale, what Cellini describes as that of "minuterie." Cellini praises Caradosso beyond all others in this work, saying "it was just in this very getting of the gold so equal all over, that I never knew a man to beat Caradosso!" He tells how important this equality of surface is, for if, in the working, the gold became thicker in one place than in another, it was impossible to attain a perfect finish. Caradosso made first a wax model of the object which he was to make; this he cast in copper, and on that he laid his thin gold, beating and modelling it to the form, until the small hollow bas-relief was complete. The work was done with wooden and steel tools of small proportions, sometimes pressed from the back and sometimes from the front; "ever so much care is necessary," writes Cellini, "...to prevent the gold from splitting." After the model was brought to such a point of relief as was suitable for the design, great care had to be exercised in extending the gold further, to fit behind heads and arms in special relief. In those days the whole film of gold was then put in the furnace, and fired until the gold began to liquefy, at which exact moment it was necessary to remove it. Cellini himself made a medal for Girolamo Maretta, representing Hercules and the Lion; the figures were in such high relief that they only touched the ground at a few points. Cellini reports with pride that Michelangelo said to him: "If this work were made in great, whether in marble or in bronze, and fashioned with as exquisite a design as this, it would astonish the world; and even in its present size it seems to me so beautiful that I do not think even a goldsmith of the ancient world fashioned aught to come up to it!" Cellini says that these words "stiffened him up," and gave him much increased ambition. He describes also an Atlas which he constructed of wrought gold, to be placed upon a lapis lazuli background: this he made in extreme relief, using tiny tools, "working right into the arms and legs, and making all alike of equal thickness." A cope-button for Pope Clement was also quite a tour de force; as he said, "these pieces of work are often harder the smaller they are." The design showed the Almighty seated on a great diamond; around him there were "a number of jolly little angels," some in complete relief. He describes how he began with a flat sheet of gold, and worked constantly and conscientiously, gradually bossing it up, until, with one tool and then another, he finally mastered the material, "till one fine day God the Father stood forth in the round, most comely to behold." So skilful was Cellini in this art that he "bossed up in high relief with his punches some fifteen little angels, without even having to solder the tiniest rent!" The fastening of the clasp was decorated with "little snails and masks and other pleasing trifles," which suggest to us that Benvenuto was a true son of the Renaissance, and that his design did not equal his ability as a craftsman.

Cellini's method of forming a silver vase was on this wise. The original plate of silver had to be red hot, "not too red, for then it would crack,—but sufficient to burn certain little grains thrown on to it." It was then adjusted to the stake, and struck with the hammer, towards the centre, until by degrees it began to take convex form. Then, keeping the central point always in view by means of compasses, from that point he struck "a series of concentric circles about half a finger apart from each other," and with a hammer, beginning at the centre, struck so that the "movement of the hammer shall be in the form of a spiral, and follow the concentric circles." It was important to keep the form very even all round. Then the vase had to be hammered from within, "till it was equally bellied all round," and after that, the neck was formed by the same method. Then, to ornament the vase, it was filled with pitch, and the design traced on the outside. When it was necessary to beat up the ornament from within, the vase was cleared out, and inverted upon the point of a long "snarling-iron," fastened in an anvil stock, and beaten so that the point should indent from within. The vase would often have to be filled with pitch and emptied in this manner several times in the course of its construction.

Benvenuto Cellini was one of the greatest art personalities of all time. The quaintness of the æsthetic temperament is nowhere found better epitomized than in his life and writings. But as a producer of artistic things, he is a great disappointment. Too versatile to be a supreme specialist, he is far more interesting as a man and craftsman than as a designer. Technical skill he had in unique abundance. And another faculty, for which he does not always receive due credit, is his gift for imparting his knowledge. His Treatises, containing valuable information as to methods of work, are less familiar to most readers than his fascinating biography. These Treatises, or directions to craftsmen, are full of the spice and charm which characterize his other work. One cannot proceed from a consideration of the bolder metal work to a study of the dainty art of the goldsmith without a glance at Benvenuto Cellini.

The introduction to the Treatises has a naïve opening: "What first prompted me to write was the knowledge of how fond people are of hearing anything new." This, and other reasons, induced him to "write about those loveliest secrets and wondrous methods of the great art of goldsmithing."