Probably he felt capable of better things than drudging in an employment so precarious as glass-painting; and hence he was induced to turn his attention to the kindred art of painting and enamelling earthenware. Yet on this subject he was wholly ignorant; for he had never seen earth baked before he began his operations. He had therefore everything to learn by himself, without any helper. But he was full of hope, eager to learn, of unbounded perseverance and inexhaustible patience.
It was the sight of an elegant cup of Italian manufacture - most probably one of Luca della Robbia's make - which first set Palissy a-thinking about the new art. A circumstance so apparently insignificant would have produced no effect upon an ordinary mind, or even upon Palissy himself at an ordinary time; but occurring as it did when he was meditating a change of calling, he at once became inflamed with the desire of imitating it. The sight of this cup disturbed his whole existence; and the determination to discover the enamel with which it was glazed thenceforward possessed him like a passion. Had he been a single man he might have travelled into Italy in search of the secret; but he was bound to his wife and his children, and could not leave them; so he remained by their side groping in the dark in the hope of finding out the process of making and enamelling earthenware.
At first he could merely guess the materials of which the enamel was composed; and he proceeded to try all manner of experiments to ascertain what they really were. He pounded all the substances which he supposed were likely to produce it. Then he bought common earthen pots, broke them into pieces, and, spreading his compounds over them, subjected them to the heat of a furnace which he erected for the purpose of baking them. His experiments failed; and the results were broken pots and a waste of fuel, drugs, time, and labour. Women do not readily sympathise with experiments whose only tangible effect is to dissipate the means of buying clothes and food for their children; and Palissy's wife, however dutiful in other respects, could not be reconciled to the purchase of more earthen pots, which seemed to her to be bought only to be broken.
Yet she must needs submit; for Palissy had become thoroughly possessed by the determination to master the secret of the enamel, and would not leave it alone.
For many successive months and years Palissy pursued his experiments. The first furnace having proved a failure, he proceeded to erect another out of doors. There he burnt more wood, spoiled more drugs and pots, and lost more time, until poverty stared him and his family in the face. "Thus," said he, "I fooled away several years, with sorrow and sighs, because I could not at all arrive at my intention." In the intervals of his experiments he occasionally worked at his former callings, painting on glass, drawing portraits, and measuring land; but his earnings from these sources were very small. At length he was no longer able to carry on his experiments in his own furnace because of the heavy cost of fuel; but he bought more potsherds, broke them up as before into three or four hundred pieces, and, covering them with chemicals, carried them to a tile-work a league and a half distant from Saintes, there to be baked in an ordinary furnace. After the operation he went to see the pieces taken out; and, to his dismay, the whole of the experiments were failures. But though disappointed, he was not yet defeated; for he determined on the very spot to "begin afresh."His business as a land-measurer called him away for a brief season from the pursuit of his experiments. In conformity with an edict of the State, it became necessary to survey the salt-marshes in the neighbourhood of Saintes for the purpose of levying the land-tax.
Palissy was employed to make this survey, and prepare the requisite map. The work occupied him some time, and he was doubtless well paid for it; but no sooner was it completed than he proceeded, with redoubled zeal, to follow up his old investigations "in the track of the enamels." He began by breaking three dozen new earthen pots, the pieces of which he covered with different materials which he had compounded, and then took them to a neighbouring glass-furnace to be baked. The results gave him a glimmer of hope. The greater heat of the glass-furnace had melted some of the compounds;but though Palissy searched diligently for the white enamel he could find none.
For two more years he went on experimenting without any satisfactory result, until the proceeds of his survey of the salt-marshes having become nearly spent, he was reduced to poverty again. But he resolved to make a last great effort; and he began by breaking more pots than ever. More than three hundred pieces of pottery covered with his compounds were sent to the glass-furnace;and thither he himself went to watch the results of the baking.
Four hours passed, during which he watched; and then the furnace was opened. The material on ONE only of the three hundred pieces of potsherd had melted, and it was taken out to cool. As it hardened, it grew white-white and polished! The piece of potsherd was covered with white enamel, described by Palissy as "singularly beautiful!" And beautiful it must no doubt have been in his eyes after all his weary waiting. He ran home with it to his wife, feeling himself, as he expressed it, quite a new creature. But the prize was not yet won - far from it. The partial success of this intended last effort merely had the effect of luring him on to a succession of further experiments and failures.
