Cold Exposure and Heat Reinforced Operant Behavior

Abstract

No variation in total amounts of those polycyclic hydrocarbons with ultraviolet absorption maxima at 385 mmicro was found in the smoke from cigarettes containing varying amounts of hexane solubles. Addition of C(l4)-labeled tobacco paraffins to cigarettes showed that tobacco paraffins are unimportant as precursors of polycyclic hydrocarbons in smoke.