Oct 12 1995 Guardian (London) By WENDY GROSSMAN Two British teams led the list of winners of the 1995 IG NOBEL prizes. The IG NOBEL prize for economics went to Nick Leeson and his superiors at Barings Bank, joint winners with Robert Citron of Orange County, California, 'for using the calculus of derivatives to demonstrate that every financial institution has its limits'. The IG NOBEL prize for physics was awarded to D Georget, R Parker and A Smith, of the Institute of Food Research in Norwich, for their report, 'A study of the effects of water content on the compaction behaviour of breakfast cereal flakes', which was published in the research journal Powder Technology in November, 1994. The IG NOBEL prizes have been awarded in a boisterous ceremony each year since 1991 for achievements which 'cannot or should not be reproduced'. One of the highlights this year was the ballet, the interpretive dance of the nucleotides, which was performed by 10 dancers including three NOBEL laureates: William Lipscomb (chemistry, 1976); Sheldon Glashow (physics, 1979); and Dudley Herschbach (chemistry, 1986). Other IG NOBEL prizewinners included Marcia E Buebel, David S Shannohoff-Khalsa, and Michael R Boyle (medicine) for their study, 'The effects of unilateral forced nostril breathing on cognition'. The prize for public health went to Martha Kold Bakkevig, at Norway's Sintef Unimed, and Ruth Nielson of the Technical University of Denmark for their paper, 'Impact of wet underwear on thermoregulatory responses and thermal comfort in the cold'. The dentistry prize was won by Minnesota's Robert H Beaumont for his study, 'Patient preference for waxed or unwaxed dental floss'.