Bulk measurements of particulate NO3-,SO4--,Cl-, and NH4+ were made over continental and marine areas, at altitudes from 0.17 to 7 km, as a part of project Gametag. Above the boundary layer, little difference was noted between marine and continental values for all but NH4+. Average marine/continental values in the free troposphere were NO3-,0.10/0.13; SO4--,0.18/0.30; Cl-,0.13/0.20; and NH4+,0.02/0.07 ppbm, respectively. Within the boundary layer, however, NO3- and NH4+ were considerably higher in continental samples because of the anthropogenic and biological sources of NOx and NH3, while Cl- was, as expected, much higher in marine areas. The marine/continental boundary layer averages were NO3-,0.22/0.62; SO4--,0.86/1.11; Cl-,3.9/0.25; and NH4+,0.11/0.27. Significant positive correlations were found between most of the bulk particulate concentrations in the continental boundary layer. No significant correlations were found with latitude, however.