Austrian papers state that a merchant of Vienna has lately presented to the Industrial Union of that capital tbe details of a series of experiments made by him to manufacture spiders' thread into woven tissues. The thread is wound on a reel, and two dozen spi ders produce in six iBinutes a beautiful and delicate thread, two thousand feet in length. The stuffs manulactured are spoken of as be ing far superior to those of silk in beauty and delicacy of fabric.