Results of a theoretical determination of HNO2 and HNO3 productions by lightning are presented, and productions of OH, CO, and N2O which relate to questions of the validity of the model and chemistry used in the calculation are also discussed. It is finally concluded that the direct productions of HNO2 and HNO3 by lighting are too small to have been observed in measurements of the NO-3 content of rain water. This result appears to be in accord with experiment.