A patent has recently been taken out in England by F. Burot for a process of gilding silk thread, as follows:—The silk is first immersed in a solution of acetate of silver, to which is added some ammonia. After two hours' immersion in this liquid it is taken out and dried, then submitted to the action of a current of hydrogen gas, which reduces the silver in the thread to a metallic state, fit to conduct a current of electricity. The silk is then gilded by any of the processes employed in gilding metal plates or objects, namely, by placing it in a bath with a gold solution in connection with a galvanic battery.