THE STORY OF ARTIFICIAL SILK —— In one of his first experiments, he filtered caustic soda through six folds of strong bleached cotton. The result amazed him. He could hardly believe his eyes. I found that my filtering cloth had undergone an extraordinary change,” he said. “ It had become semi-transparent, contracted and thickened.” He showed it to his friends as a curiosity. He did not at first realize the immense value of his discovery. The filter-cloth, too, had become glossy. IT LOOKED ALMOST LIKE SILK. He tested its strength. It had become almost as strong as linen. It was more receptive to dyes. It was the most superior bit of cotton cloth that he, or anyone else, had ever seen. He found, by the aid of his microscope, that caustic soda actually improves the cotton fibre. It ripens it. It makes the filament round instead of flat, and consequently makes it glossier. In 1851, he had an exhibit at the Crystal Palace Exhibition. It attracted great atten-