One day he was shown an elegant cup of Italian manufacture, beautifully enamelled. The art of enamelling was then entirely unknown in France, and Palissy was at once seized with the idea, that if he could but discover the secret it would enable him to place his wife and family in greater comfort. "So, therefore," he writes, "regardless of the fact that I had no knowledge of clays, I began to seek for these enamels as a man gropes in the dark. I reflected that God had gifted me with some knowledge of drawing, and I took courage in my heart, and besought him to give me wisdom and skill." [Illustration: PALISSY THE POTTER. Page 242.] He lost no time in commencing his experiments. He bought a quantity of earthen pots, broke them into fragments, and covering them with various chemical compounds, baked them in a little furnace of his own construction, in the hope of discovering the white enamel, which he had been told was the key to all the rest. Again and again he varied the ingredients of the compositions, the proportions in which they were mixed, the quality of the clay on which they were spread, the heat of the furnace to which they were subjected; but the white enamel was still as great a mystery as ever. Instead of discouraging, each new defeat seemed to confirm his hope of ultimate success and to increase his perseverance. Painting and surveying he no longer practised, except when sheer necessity compelled him to resort to them to provide bread for his family. The discovery of the enamel had become the great mission of his life, and to that all other occupations must be sacrificed. "Thus having blundered several times at great expense and through much trouble, with sorrows and sighs, I was every day pounding and grinding new materials and constructing new furnaces, which cost much money, and consumed my wood and my time." Two years had passed now in fruitless effort. Food was becoming scarce in the little household, his wife worn and shrewish, the children thin and sickly. But then came the thought to cheer him,--when the enamel was found his fortune would be made, there would then be an end to all his privations, anxieties, and domestic unhappiness, Lisette would live at ease, and his children lack no comfort. No, the work must not be given up yet. His own furnace was clumsy and imperfect,--perhaps his compositions would turn out better in a regular kiln. So more pots were bought and broken into fragments, which, covered with chemical preparations, were fired at a pottery in the neighbourhood. Batch after batch was prepared and despatched to the kiln, but all proved disheartening failures. Still with "great cost, loss of time, confusion, and sorrow," he persevered, the wife growing more shrewish, the children more pinched and haggard. By good luck at this time came the royal commissioners to establish the gabelle or tax in the district of Saintonge, and Palissy was employed to survey the salt marshes.