In the article by Dr. Stanley J. Seeger and Dr. Arthur A. Schaefer, entitled, "Blood Grouping," in the May issue (Am. J. Dis. Child.45:999, 1933), the following corrections should be made:
Page 1003, the heading of table 2 should read "Distribution of Patients."
Page 1006, in line 1, the names of Meixner and Wiener are misspelled; line 3 should read "agglutinogens (M and N) in normal human red cells."