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The amount of the individual alkaloids present in the smoke compared with that in the leaf is reflected by the percent transfer data. With the UK Reference Cigarette, the high and low extremes for nicotine delivery were 24.2 and 9.8%, respectively. For nornicotine these respective extremes were 15.4 and 7.7%; for anabasine they were 38.2 and 10.2%, and for anatabine the high and low extremes were 8.4 and 2.7%. With the commercial cigarette, percentage of nicotine transferred ranged from 22.8% to 6.7%. The high and low extremes for nornicotine, anabasine, and anatabine were 9.6