1961 March 16 England 56 March 23–30 Florida 250 April 18 Eagle River, Wis. Pancakes 226 July New Mexico 57 July 23 Pacific Ocean 103 August Los Alamos, N.M. 177 Oct. 2 Salt Lake City, Utah 245 Oct. 17 Netherlands Antilles 57 1962 April 18 Eureka, Utah 189 Sep. 9 England Blue rain 234 Sep. 11 Sebree, Ky. 223 INDEX A Accra, Africa, 50 Adamski, G., 16, 203, 204, 278 Aerial Phenomena Group, U. S. Air Force, 2, 271, 272. _See also_ ATIC Aerial Phenomena Research Organization (APRO), 181, 219, 235–36, 275, 278 Aerospace Technical Intelligence Center (ATIC), 2, 271. _See also_ ATIC After-image, 242 Air Defense Command, 72, 94, 139, 160, 162, 166, 167 Air Force, U. S., 2, 272–75; APRO challenge to, 235–36; conspiracy charges against, 69–70, 277–78. _See also_ ATIC Air Force pilots, UFO sightings by, 70–72, 112, 113 Akron, Ohio, 53, 280 Alamogordo, N.M., 92 Alaska, 60, 152 Aldebaran, 253, 254 _Almirante Saldanha_, 207 ff Aluminum foil, 164, 224, 225 Alvarez, L. W., 139 _Amazing Stories_ magazine, 15, 16–21, 25 American Airlines flights, UFOs reported from, 52, 68 American Meteor Society, 88, 95, 111, 134, 135 American Meteorite Museum, 102, 176 Analyses of UFO “fragments,” 220, 231–34, 236 Angel hair, 220–26; alleged origins of, 194, 221; arachnid, 220–24; industrial, 224 “Angels” on radar, Pl. IVc; collision course of, 153–54; defined, 151; conditions producing, 157–60, 164, 170; moisture inversion and, 151, 158–60; possible causes of, 157–58; ring, 150, 165–66; temperature inversion and, 151–52, 158–60; UFO reports based on, 5–6, 71, 72, 151–52, 155–57, 161, 164–71, 182 Ann Arbor, Mich., 241 Antigravity, 195 Aquarid meteors, 111, 134 _Armillaria mellea_, 119 Arnold, K., articles by, 15; Maury Island investigation by, 22; UFO sighting by, 13, 26, 28, 29 Artificial gravitational field, 10, 193. _See also_ G-field Artificial satellites, 45, 116, 172–73, 277, 288 Asteroids, fragments of, 90 ATIC, UFO investigations by, 5, 38, 46, 54, 68, 70, 72, 76, 80, 106, 108, 113, 126, 131, 135, 136, 141, 163, 169, 176, 182, 185, 224, 236, 239, 241, 245, 247, 254, 281; resources of, 272–73; responsibility of, 271–75 Atlantis, 10, 17, 18 Aurora Borealis, radar echoes from, 164 B Ball lightning, 176–80, Pl. Vb; theory of, 178; USSR reports of, 178