swarms, meteorite, 50 swarms, meteor-particle, 111, 112, 114 Swindel, G. W., Jr., 179 “swords from heaven,” 150 Sylacauga stone, 71-2, 74, 179 T taenite, 124 tektite-obsidian test, 138-9 tektites, 134-146, 160 tests for true meteorites, 130-3 “thumb-prints,” 131, 132 trajectory, 90, 92, 173 tritium, 170 Tucson iron, 128 Tungus, _see_ Podkamennaya Tunguska twice-found meteorites, 76 Tycho, lunar ray-crater, 61 U University of California Radiation Laboratory, 58 University of Chicago, 168 University of New Mexico, 24, 30 _see also_ Institute of Meteoritics University of Nebraska, 30, 80 U. S. National Museum, 40, 158 Ussuri fall, 10, 11-34, 42, 50, 54, 65, 130 V vaporization, 102, 107, 116, 126, 128, 143, 145, 162, 172, 174 velocity, 107, 108, 109, 171, 179 Venus, 102, 162 Verbeek, R. D. M., 140 Vienna, National History Museum of, 41, 158 volcanic theories, 138, 155, 156, 164 W Wabar craters, 50, 65, 143, 162 Wasiutynski, J., 63-4, 179 water, meteorites under, 78 waves, air and water, 12, 54-5 weather, effect of meteoritic dust on, 117 weathering of meteorites, 38, 48, 52, 53, 54, 66, 133, 144 weights and weighing of meteorites, 35, 36, 128, 130 White, C. S., 179 Widmanstätten pattern, 120, 121, 122, 158 Whipple, F. L., 177, 179 Willamette iron, 36, 128, 129 Wold Cottage meteorite, 156 Wolf Creek crater, 52, 53, 65, 75, 133 Y Yale University, 41 young people and meteoritics, 23, 24, 28, 34, 39, 90, 98, 99, 116 _see also_ reports, eyewitness Z Zhovtnevy Hutor fall, 82 FOOTNOTES [1]Also called _aerolites_. [2]The meteorites from this crater-producing fall have been found in both Haviland and Brenham Townships, Kiowa County, Kansas. Either of these names may therefore appear in the literature. [3]The meteorites from this crater-producing fall have been found in both Haviland and Brenham Townships, Kiowa County, Kansas. Either of these names may therefore appear in the literature. [4]453.59 grams = 1 pound. [5]A questionnaire for making an adequate report is obtainable by request from the Institute of Meteoritics, The University of New Mexico, Albuquerque. [6]Readers who are advanced enough in astronomy to attempt plotting the meteor paths can get the proper star-maps and record sheets for this purpose by joining the American Meteor Society. Members must be at least 18 years old, but applicants between 14 and 18 can become probational members. For details write to Dr. C. P. Olivier, President, American Meteor Society, 521 North Wynnewood Avenue, Narberth, Pennsylvania.