1. In eight patients being treated by chronic dialysis the relation of magnesium metabolism to the magnesium concentration of the dialysate was investigated. During four periods of 2-6 weeks the magnesium concentrations of the dialysis fluid were 0'44±0'15 mg/IOO ml, 0'70±0'24 mg/IOO ml, 1'83±0'18 mg/IOO ml and 1'97±0'21 mg/IOO ml. 2. During all periods the concentration of plasma magnesium and...
