Corrections Free

p 746, paragraph 3: ". . . final concentration of antiserum, 1 to 2 g/100 ml" should read ". . . final concentration of antiserum, 1 to 2 ml/100 ml"; and legend to Figure 2 should be changed to read "(2 ml/100 ml)" rather than "(2 g/100 ml)."

p 747, legend to Figure 5: change "α₂-lipoprotein" to "α₁-lipoprotein."

p 748, line 4: change to read "agarose containing 1 ml. . ."

p 749, legend to Figure 8: change "α₃-antitrypsin" to α₁-antitrypsin."