One of the most recent reports of angel hair came from Sebree, Kentucky, on September 11, 1962, when state police and the local Civil Defense director were called in to investigate a strange substance that looked like spun glass, which had been floating down near the residence of Mr. Y in great quantities for more than an hour. The Air Force, when called for advice, suggested three possibilities: the material might be chemicals used in cloud seeding, might be refuse from a defective filter in a chemical or industrial plant, or might be gossamer formed by migrating spiders. The first two possibilities were quickly ruled out. The witnesses, when requestioned, remembered that they had indeed noticed spiders clinging to several bits of the material they had picked up. The troopers’ report concluded, “It is the belief of this unit the substance observed was gossamer formed by huge quantities of migrating spiders moving, which is normal for this season.” The yearly migration of spiders and sloughing of gossamer is an established fact. As an explanation of angel hair it is far less fantastic than a still-hypothetical cruising spaceship. _Other Varieties of Angel Hair_ Several types of angel hair not of arachnid origin have been reported in industrial areas, particularly in and near cities that have textile factories. When the filtering system of such a factory fails to work properly, lint and waste residues may be thrown into the air to be carried away by the wind and eventually deposited on the ground. Drifting fibers of nylon, rayon, and other fabrics can mystify an observer, especially if the residues break and disappear when touched. Some cities, such as Cincinnati, maintain an Air Pollution Center to deal with the problems resulting from air contamination by industrial wastes. Scientists at this and other centers often collaborate with ATIC in identifying unknown substances reported in connection with UFOs. Late in the afternoon of September 25, 1956, a housewife in Cincinnati noticed a strange substance floating down into her yard, a white, fibrous material that curled when she touched it. Wondering if she had found some angel hair, she described the incident to the editors of _Orbit_, a saucer publication; in addition, she collected some of the material in a jar and sent it to the Air Force for analysis[XI-8]. Working in collaboration with the Air Pollution Center at Cincinnati, ATIC investigators subjected the material to chemical and microscopic tests and identified it as waste products from fibers of cuprammonium (Bemberg) rayon, from a local industrial plant[XI-9].