Belief in the possibility that man may ultimately succeed in synthesizing the cellular and fibrillar structure characteristic of natural fibers, was expressed by Prof. E. R. Schwarz in an address given May 7 at the joint meeting of the American Association of Textile Technol ogists and alumni of the various textile schools and col leges, held at The Builder's Club in New York. He stated, however, that an exact duplication of nature's structure and physical behavior may not be necessary. Sufficient information as to the relationships between the physical and chemical structure and the various proper ties of the natural fibers may enable man to engineer fila ments that will function in the desired fashion. An abridgment of the address by Prof. Schwarz follows: