The great popularity of India-rubber induced Mr. E.M. Chaflee, of Boston, the foreman of a patent leather factory in that city, to attempt to apply the new substance to some of the uses to which patent leather was then put. His hope was that, by spreading the liquid gum upon cloth, he could produce an article which, while possessing the durability and flexibility of patent leather, would also be water-proof. His experiments extended over a period of several months, during which time he kept his plan a secret. He dissolved a pound of the gum in three quarts of spirits of turpentine, and added to the mixture enough lamp-black to produce a bright black color, and was so well satisfied with his compound, that he felt sure that the only thing necessary to his entire success was a machine for spreading it properly on the cloth. Like a true son of New England, he soon overcame this difficulty by inventing the desired machine. His compound was spread on the cloth, and dried in the sun, producing a hard, smooth surface, and one sufficiently flexible to be twisted into any shape without cracking. Mr. Chaffee was now sure that he had mastered the difficulty. Taking a few capitalists into his confidence, he succeeded so well in convincing them of the excellence of his invention, that in February, 1833, a company, called the "Roxbury India-rubber Company," was organized, with a capital of thirty thousand dollars. In three years this sum was increased to four hundred thousand dollars. The new company manufactured India-rubber cloth according to Mr. Chaffee's process, and from it made wagon-covers, piano-covers, caps, coats, and a few other articles, and, in a little while, added to their list of products shoes without fiber. They had no difficulty in disposing of their stock. Every body had taken the "India-rubber fever," as the excitement caused by Mr. Chaffee's discovery was called; and so high were the hopes of the public raised by it, that buyers were found in abundance whenever the bonds of the numerous India-rubber companies were offered for sale. The extraordinary success of the Roxbury Company led to the establishment of similar enterprises at Boston, Framingham, Salem, Lynn, Chelsea, Troy, and Staten Island. The Roxbury Company could not supply the demand for its articles, and the others appeared to have as much business as they could attend to. Apparently, they were all on the high road to wealth.