Factors Influencing Supply of Major Ions to Inland Waters, with Special Reference to the Atmosphere

Equivalent proportions of alkalies and alkaline earths in the bedrock and major river waters of Finland . . . . . . . . . .798 Comparison of ionic composition in waters of arid and humid regions . . . . . .799 Supply of ions by atmospheric precipitation, and the discharge of ions by river waters, in two districts of Finland . . . . . . .803 Comparison of average ionic concentrations in 1 year's atmospheric precipitation with average or minimun1 concentrations observed in lake or river waters . . . . . .804 Range of ionic concentration in European air masses during December 1957 and June 1958 .